DETECTION OF CAVITATION IN CENTRIFUGAL PUMP BY VIBRATION METHODS
离心泵的空化流数值模拟与空化余量预测
离心泵的空化流数值模拟与空化余量预测赖喜德;廖功磊;曾维国【摘要】空化余量是泵非常重要的性能指标之一,目前主要依靠试验来确定.如何在离心泵设计过程中较为准确地预测出必须的空化余量对优化设计和提高运行稳定性等方面十分重要.针对离心泵运行过程中发生空化时的流动特点,基于Rayleigh-Plesset方程来描述空泡生长和溃灭过程的空泡动力学模型,采用混合空化两相流模型和三维全流道两相流流动数值模拟技术,探索通过数值试验来预测空化余量的方法.对一低比转速离心泵进行全流道空化流数值模拟,通过改变NPSHa来模拟试验工况,数值模拟预测出各模拟试验工况下的扬程、叶片表面压力分布、叶片表面空化发生区域以及流道内空泡体积率分布,从而预测该泵的NPSHr,其预测结果与试验值的误差小于10％.%NPSHr is one of the most important performance of a pump, which is mainly derived from hydraulic model tests. How to accurately predict a pump' s NPSHr is a great challenge to optimize design and enhance operating stability. Based on cavitating flow feature inside a centrifugal pump, bubble growth and implosion are calculated from the Rayleigh - Plesset equation which describes the dynamic behavior of spherical bubble, filled with vapor and gas, as a function of the local pressure. A numerical simulation of two -phase flow with a homogenous mixture of gas and liquid inside a centrifugal pump was employed to explore the methodology of predicting NPSHr with numerical test approach. A numerical simulation for cavitating flow inside a low specified speed centrifugal pump was conducted in whole passage. The numerical test was carried out for the centrifugal pump at different operatingconditions by varying NPSHa, which is similar to hydraulic tests, NPSHr for this pump can be predicted from the head -drop curves which were computed by numerical simulation. Meanwhile, the pressure distribution on blades surfaces, districts where cavitation occurred, and vapor volume fraction inside the flow passage of a pump could be used to investigate the cavitating flows and helpful to determine NPSHr value. It showed that the predicted result agreed with the measured results by hydraulic tests and the maximum error was within 10%.【期刊名称】《西华大学学报（自然科学版）》【年(卷),期】2013(032)002【总页数】4页(P29-32)【关键词】离心泵;空化流;两相流;数值模拟;性能预测【作者】赖喜德;廖功磊;曾维国【作者单位】西华大学能源与环境学院,四川成都610039【正文语种】中文【中图分类】TH311空化流动是水力机械运行过程中在流道中普遍存在的一种复杂的流动现象。
流体力学中英文术语
流体力学中英文术语Index 翻译（Fluid Mechanics）Absolute pressure,绝对压力（压强）Absolute temperature scales, 绝对温标Absolute viscosity, 绝对粘度Acceleration加速度centripetal, 向心的convective, 对流的Coriolis, 科氏的field of a fluid, 流场force and，作用力与……local, 局部的Uniform linear, 均一线性的Acceleration field加速度场Ackeret theory, 阿克莱特定理Active flow control, 主动流动控制Actuator disk, 促动盘Added mass, 附加质量Adiabatic flow绝热流with friction,考虑摩擦的isentropic,等熵的air, 气体with area changes, 伴有空间转换Bemoullii’s equation and, 伯努利方程Mach number relations,马赫数关系式，pressure and density relations, 压力-速度关系式sonic point，critical values, 音速点，临界值，stagnation enthalpy, 滞止焓Adiabatic processes, 绝热过程Adiabatic relations, 绝热关系Adverse pressure gradient, 逆压力梯度Aerodynamic forces, on road vehicles, 交通工具,空气动力Aerodynamics, 空气动力学Aeronautics, new trends in, 航空学，新趋势Air空气testing/modeling in, 对……实验/建模useful numbers for, 关于……的有用数字Airbus Industrie, 空中客车产业Aircraft航行器airfoils机翼new designs, 新型设计Airfoils, 翼型aspect ratio (AR), 展弦比cambered, 弧形的drag coefficient of , 阻力系数early, 早期的Kline-Fogleman, 克莱恩-佛莱曼lift coefficient, 升力系数NACA,(美国) 国家航空咨询委员会separation bubble, 分离泡stalls and, 失速stall speed, 失速速度starting vortex, 起动涡stopping vortex, 终止涡Airfoil theory, 翼型理论flat-plate vortex sheet theory, 平板面涡理论Kutta condition, 库塔条件Kutta-Joukowski theorem, 库塔-儒科夫斯基定理1thick cambered airfoils, 厚弧面翼型thin-airfoils, 薄翼型wings of finite span, 有限展宽的翼型A-380 jumbo jet, 大型喷气式客机Alternate states, 交替状态American multiblade farm HA WT, 美式农庄多叶水平轴风机Angle of attack, 攻角Angle valve, 角阀Angular momentum角动量differential equation of , 关于…的微分方程relation/theorem, 联系/理论Annular strips, 环形带Applied forces, linear momentum, 外加力，线性冲力Apron,of a dam, 大坝的护坦Arbitrarily moving/deformable control volume, 任意运动/可变形控制体Arbitrary fixed control volume, 任意固定控制体Arbitrary viscous motion, 随机粘性运动Archimedes, 阿基米德Area changes, isentropic flow. 域变换，等熵流Aspect ratio (AR), 展弦比Automobiles, aerodynamic forces on, 汽车，气动力A verage velocity, 平均速度Axial-flow pumps. 轴流泵Axisymmetric flow, stream function 轴对称流，流函数Axisymmetric Potential flow, 轴对称有势流hydrodynamic mass, 水力学质量Point doublet, 点偶极子point source or sink, 点源与点汇spherical Polar coordinates and, 球极坐标uniform stream in the x direction, x方向的均匀流uniform stream plus a point doublet, 均匀流附加点偶极子uniform stream plus a point source, 均匀流附加点源BBackward-curved impeller blades, 后向曲叶轮片,Backwater curves, 回水曲线Basic equations, non dimensional, 基本方程，无量纲的Bernoulli obstruction theory, 伯努利障碍理论Bernoulli's equation, 伯努利方程with adiabatic and isentropic steady flow, as绝热、等熵稳态流frictionless flow, 无摩擦流assumptions/restrictions for, 假想/约束HGLs and EGLs, 水力坡度线和能量梯度线steady flow energy and, 定常流动能量in rotating coordinates. 在旋转坐标下，Best efficiency point (BEP), pumps, 最佳效率点，Betz number, 贝兹数Bingham plastic idealization, 宾汉塑性理想化，Biological drag reduction, 生物学阻力衰减Blade angle effects, on pump head, 叶片安装角效率，泵头处Blasius equation, 布拉修斯方程Body drag, at high Mach numbers, 机体阻力，在高马赫数下Body forces, 体力Boeing Corp., 波音公司Boundaries, of systems, 边界，系统Boundary conditions. 边界条件，differential relations for fluid flow, 流体的微分关系nondimensionalizalion and, 无量纲化Boundary element method (BEM), 边界元方法2Boundary layer (BL) analysis, 边界层分析boundary layer flows, 边界层流动boundary layer separation on a half body, 边界层半体分离displacement thickness, 位移厚度drag force and, 阻力equations, 方程flat-plate. 平板，Karman's analysis, 卡门分析momentum integral estimates, 动量积分估计momentum integral relation. 动量积分关系momentum integral theory, 动量积分理论pressure gradient 压力梯度separation on a half body, 半模分离skin friction coefficient, 表面摩擦系数two-dimensional flow derivation, 二维流推导Boundary layers with Pressure gradient, 边界层压力梯度adverse gradient, 反梯度favorable gradient, 正梯度laminar integral theory, 层流积分理论，nozzle-diffuser example,喷口扩散算例Bourdon tube, 波登管Bow shock wave, 弓形激波Brake horsepower,制动马力Broad-crested weirs, 宽顶堰Buckingham Pi Theorem, 白金汉定理Bulb Protrusion, 球形突出物（船头）Bulk modulus. 体积模量Buoyancy, 浮力Buoyant particles, local velocity and, 悬浮颗粒，局部速度Buoyant rising light spheres, 浮力作用下自由上升的球体Butterfly valve, 蝶形阀CCambered airfoils, 弓型翼Cauchy-Riemann equations, 柯西-黎曼方程Cavitation/Cavitation number, 气穴/气蚀数Celsius temperature scales, 摄氏温标Center of buoyancy, 浮心Center of Pressure (CP),压力中心，压强中心Centrifugal pumps, 离心泵backward-curved impeller blades, 后曲叶轮片blade angle effects on pump head, 泵头处叶片安装角效率brake horsepower, 制动马力circulation losses, 环量损失closed blades, 闭叶片efficiency of, 效率的elementary pump theory. 基泵理论Euler turbomachine equations, 欧拉涡轮机方程eye of the casing, 泵体通风口friction losses, 摩擦损失hydraulic efficiency, 水力[液压]效率mechanical efficiency.机械效率open blades, 开放式叶片output parameters, 输出参数power, delivered, 功率，传递pump surge, 泵涌，scroll section of casing, 卷形截面，泵体，shock losses, 激波损失vaneless, 无叶片的3volumetric efficiency, 容积效率[系数]water horsepower, 水马力Centripetal acceleration, 向心加速度Channel control Point, 传送控制点Characteristic area. external flows, 特征区域，外流Chezy coefficient, 薛齐系数Chezy formula, 薛齐公式Chezy coefficient,薛齐系数flow in a Partly full circular pipe, 流体非充满的圆管流Manning roughness correlation. 曼宁粗糙度关系，normal depth estimates, 法向深度估计Choking, 壅塞；堵塞of compressors, 压缩机的due to friction, compressible duct and, 由于摩擦，可压缩管的isentropic flow with area changes, 变横截面积等熵流simple heating and, 单纯加热Circular cylinder, flow with circulation. 圆柱体，Circulation环量and flow past circular cylinder, 流体经过圆柱体losses, in centrifugal pumps, 损失，离心泵potential flow and, 有势流Circumferential pumps, 环型泵Classical venturi, 标准文氏管Closed blades, centrifugal pumps. 闭叶片，离心泵Closed-body shapes, 闭体外形，circular cylinder, with circulation, 圆柱体，环量Kelvin oval, 开尔文椭圆，Kutta-Joukowski lift theorem,库塔－儒科夫斯基升力定理，Potential flow analogs, 有势流模拟Rankine oval, 兰金椭圆rotating cylinders. lift and drag, 旋转柱体，升力与阻力Coanda effect, 柯恩达效应( 沿物体表面的高速气流在Cobra P-530 supersonic interceptor, 眼镜蛇超音速拦截机Coefficient matrix. 系数矩阵Coefficient of surface tension, 表面张力系数Coefficient of viscosity, 粘滞系数Commercial CFD codes, viscous flow, 商业的计算流体力学代码，粘流Commercial ducts, roughness values for, 商业管道Composite-flow, open channels, 合成流，开槽道Compressibility, non dimensional. 压缩性，无量纲Compressibility effects, 压缩效果Compressible duct flow with friction, 伴有摩擦的可压缩管流adiabatic, 绝热的, 隔热的choking and, 壅塞；堵塞isothermal flow in long pipelines, 管线中的等温流动，long pipelines, isothermal flow in, 管线，等温流动，mass flow for a given pressure drop, 给定压降下质量流动minor losses in, 最小损失subsonic inlet, choking due to friction, 亚音速进口，摩擦引发阻塞，supersonic inlet, choking due to friction, 超音速进口，摩擦引发阻塞，Compressible flow, 可压缩流flow with friction摩擦流choking and, 壅塞；堵塞converging-diverging nozzles, 拉瓦尔喷管converging nozzles, 收缩喷嘴Fanno flow, 法诺流动，gas flow correction factor, 气流校正参数hypersonic flow, 高超音速气流4incompressible flow, 不可压缩流isentropic.等熵的isentropic Process, 等熵过程，Mach number, 马赫数normal shock wave. 正激波the perfect gas, 理想气体Prandtl-Meyer waves. 普朗特－麦耶膨胀波shock waves. 激波specific-heat ratio, 比热比speed of sound and,声速subsonic, 亚音速的supersonic,超音速的transonic, 跨音速的two-dimensional supersonic, 二维超音速的Compressible gas flow correction factor, 可压缩气流校正因数Compressors, 压缩机Computational fluid dynamics (CFD), 计算流体力学pump simulations, 泵模拟viscous flow. 粘流Concentric annulus, viscous flows in, 同心环Cone flows, 锥体绕流Conformal mapping, 保角映射[变换] Conservation of energy, 能量守恒定律Conservation of mass. 质量守恒定律Consistent units, 相容单元Constants, 常量dimensional, 空间的pure, 纯粹的Constant velocity, fluid flow at, 常速度, 等速度Constructs, 结构Contact angle, 交会角Continuity, 连续性，equation of ,方程nondimensionalization and, 无量纲的Continuum, fluid as, 连续流体Contraction flow, 收缩流动Control Point, channel, 控制点，管道Control volume analysis,控制体分析angular momentum theorem. 角动量定理，arbitrarily moving/deformable CV,任意运动/可变形控制体arbitrarily fixed control volume, 任意固定控制体conservation of mass, 质量守恒定律control volume moving at constant velocity, 控制体以等速运动control volume of constant shape but variable velocity作变速运动的刚性控制体energy equation. 能量方程introductory definitions, 介绍性定义linear momentum equation. 线性动量方程，one-dimensional fixed control volume, 一维固定控制体，one-dimensional flux term approximations, 一维通量项近似Physical laws. 物理定律。
大管轮英语
大管轮英语练习题1. _______ connectors hold best if a wire is accidentally pulled or a connection becomes loose.A: Ring type B: Fork typeC: Spade type D: ‘Push on, pull off’ type答案：A 假如电线会偶然被拉或连接松动，最好采用环形连接。
2.The word flammable is with the same meaning of ______. A: dangerous危险的B: toxic有毒C: light D: combustible 答案：flammable和combustible都有可燃的意思。
3. Which of the following is wrong about the basic axial piston pumps?A: In all types of piston equipment, the variable output flow capacity is readily obtained the method depending upon the detailed详细的geometry几何形状of the machine.B: In multiple pistons pumps, both the rotor face andthe slipper pads on the piston ends are pressure balanced and lubricated to minimize power losses.C: The direction of the flow is reversed in the pistons pumps, if the swash plate is moved over centre.D: The forces involved with small pumps allow the volume to bevaried mechanically, but on the larger sizes the forces increase to such a magnitude that some form of servo assistance is essential. 答案：A4. The crankshaft is of the semi-built type, with the journal轴颈_______ the forged or cast steel crank throwsA: being shrunk into B: to be shrunk intoC: to be shrunk with D: shrinking into 答案：A注：曲轴是半组合式的，轴颈与锻钢或铸钢的曲拐红套而成。
泵术语中英文对照
∙absorption pump吸收泵; 吸收器泵∙accelerated circulation by pump泵力加速循环∙accelerating pump加速泵∙accelerating pump lever 加速泵杠杆∙acceleration pump加速泵∙acceleration pump well 加速泵油池∙accelerator pump加速器泵∙accelerator pump lever 加速器泵杠杆∙accelerator pump outlet valve ball 加速器泵出油阀钢球∙accelerator pump spray nozzle 加速器泵喷管∙acid circulating pump酸循环泵∙acid pump酸泵∙acid-resistant ceramic jet pump耐酸陶瓷喷射泵∙acid-resistant ceramic pump耐酸陶瓷泵∙acid-resistant ceramic slurry pump耐酸陶瓷砂浆泵∙acid-resistant stoneware pump耐酸陶瓷泵∙acid-resisting pump耐酸泵∙adjustable blade propeller pump可调叶片螺桨泵∙adjustable delivery pump可调输料泵∙adjustable discharge gear pump可调卸料齿轮泵∙adjustable pump vane 可调泵叶∙adjustable-blade propeller pump可调叶片式轴流泵∙after booster pump后增压泵∙air bottle of pump泵的空气室∙air chamber of pump泵的气室∙air chamber pump带空气室的泵∙air dome of pump泵的气室∙air extracting pump抽气泵∙air feed pump供气泵∙air lift pump气动抽水泵; 气动升液泵; 气动提水泵; 气压泵∙air operated pump压缩空气驱动泵∙air pressure pump空气压缩泵∙air pump气泵; 抽风泵; 抽气机; 排气唧筒; 空气泵∙Air Pump 唧筒星座; 唧筒星座∙air pump governor 气泵调节器∙air pump valve 气泵阀∙air turbine pump空气涡轮泵∙air-chamber pump气室泵∙air-driven grout pump气动灌浆泵∙air-life pump风动抽水泵∙air-lift pump空气提升泵∙air-operated pump气动泵∙air-powered pump气力泵∙air-tight screw pump密闭式螺杆泵∙amine pump胺泵∙ammonia circulating pump氨循环泵∙angle type axial piston pump斜轴式轴向柱塞泵∙anti-roll pump减摇泵∙appendage vacuum pump高真空维持泵; 备用真空泵∙aqua ammonia pump氨水泵∙aqua condensate pump溶液冷凝液泵∙Archimedean screw pump阿基米德螺旋泵∙artesian well pump自流井用抽水机∙ash pump灰浆泵∙ash water pump冲灰泵; 冲洗泵∙aspirating pump抽吸泵∙aspiration pump吸扬式泵∙aspirator filter pump吸气过滤泵∙aspiring pump抽风泵∙atmospheric pump大气泵∙atomizing pump雾化式泵∙attached pump附备泵∙automatic pump自动泵∙automatic Sprengel pump自动施普伦格尔真空泵∙automatic tire pump自动汽泵∙automatic tyre pump自动轮胎打气泵∙auxiliary air pump辅助空气泵∙auxiliary circulating pump辅助循环泵∙auxiliary feed pump辅助进给泵∙auxiliary feed water pump辅助给水泵∙auxiliary lubricating oil pump辅助润滑油泵∙auxiliary oil pump辅助油泵∙auxiliary pump辅助泵; 辅助水泵∙available pump pressure 泵的有效压力∙axial flow pump轴流泵∙axial piston pump轴向活塞泵∙axial plunger pump轴向柱塞泵∙axial pump轴流泵∙axial-flow pump轴流式泵∙back water pump回水泵∙backer pump备用泵∙backing pump前级泵; 初级泵; 初级抽气泵∙backpack pump背负式喷雾器∙bag pump风箱泵∙Baker's water jet pump贝克喷水抽气泵∙balance beam engine pump发动机平衡杆泵∙ball pump球形泵∙ballast pump压载泵; 镇定泵; 平衡泵∙barrel (oil) pump油桶泵∙barrel casing feed pump筒式给水泵∙barrel pump桶泵; 桶式喷雾泵∙barrel-type pump筒式泵; 多级离心泵; 鼓形泵∙base pump station 总泵站∙basement sump pump地下室深水泵∙beam engine pump横梁发动机泵∙beam pump摇臂泵∙bearing in pump泵用轴承∙bellows pump隔膜泵∙belt driven pump皮带传动泵∙bilge pump舱底水泵; 喷射器∙bilge pump accessories 舱底泵附件∙bilge pump air vessel 舱底泵气膛∙bilge pump cock 舱底泵塞门∙bilge pump discharge pipe 舱底泵出水管∙bilge pump gland 舱底泵压盖∙bilge pump neck bush 舱底泵颈衬∙bilge pump petcock 舱底泵小塞门∙bilge pump plunger 舱底泵推水柱∙bilge pump plunger rod 舱底泵推水柱杆∙bilge pump rod 舱底泵挺杆∙bilge pump stud 舱底泵枢键∙bilge pump suction pipe 舱底泵吸水管∙bilge pump valve 舱底泵阀∙birotor pump双转子泵∙blending pump混合泵∙blood pump血泵∙blower pump增压泵∙body of pump泵体∙boiler feed pump锅炉给水泵∙boiler feed pump turbine 锅炉给水泵透平∙boiler proving pump锅炉试验泵∙boiler pump锅炉试验泵∙booster air pump启动气泵∙booster diffusion pump增压扩散泵∙booster oil diffusion pump增压油扩散真空泵∙booster oil pump增压油泵; 升压油泵∙booster pump增压泵; 接力泵; 前置泵; 升压泵; 加压泵∙booster-type diffusion pump增压式扩散泵∙Bosch fuel injection pump波希柴油喷射泵; 博施柴油喷射泵∙bottle pump玻璃水银扩散泵∙bottom hole pump井底沉没式泵; 井底沉没式泵∙bow pump船头泵∙box pump箱形泵∙breast pump吸奶器∙brine pump盐水泵∙broad band light pump宽带光泵∙bucket pump手摇带阀活塞泵; 活塞泵; 活塞式抽水泵∙built-on pump固接式泵∙bull deep-well pump杆式深井泵∙buoyancy pump浮力泵∙burr pump舱底泵∙canned motor pump密封电动泵; 密封式电动泵; 屏蔽泵∙canned pump封闭泵; 密封泵; 密封的轻便泵∙canned-rotor pump密封转子泵∙capacity of pump泵的生产率∙capillary pump毛细泵∙carbonation juice pump充气汁泵∙cargo oil pump船舶装油泵; 装油泵∙cartridge-type pump芯式泵∙cascade rotary pump级联泵∙case of pump泵壳∙casing guide of pump泵体导槽∙caustic product pump成品碱泵∙cavitation (in; of) pump水泵气蚀∙cavitation in centrifugal pump离心泵气蚀∙cell liquor pump电解液泵∙cement pump水泥泵∙Cenco pump森科高真空回转油泵∙central lubrication pump集中润滑用泵∙centrifugal booster pump离心式增压泵∙centrifugal multistage pump多级离心泵∙centrifugal oil pump离心油泵∙centrifugal pump离心泵; 离心水泵∙centrifugal pump laws 离心泵定则∙centrifugal pump of lining teflon 衬里离心泵∙centrifugal pump of multistage type 多级离心泵∙centrifugal pump of single stage type 单级离心泵∙centrifugal pump of turbine type 水轮机式离心泵; 水轮式离心泵∙centrifugal pump with lining teflon 聚四氟乙烯塑料衬里离心泵; 聚四氟乙烯塑料衬里离心泵∙centrifugal pump with vertical axis 立式离心泵∙centrifugal screw pump离心螺旋泵∙centrifugal water pump离心式水泵; 离心水泵∙centripetal pump向心泵∙ceramic process pump陶瓷化工泵∙ceramic pump陶瓷泵∙chain pump链泵∙charge pump供给泵; 加料泵∙charging pump供料泵; 充水泵; 充液泵; 进料泵; 送料泵; 上水泵∙check-valve pump止回阀配流泵∙chemical fibre pump化纤泵∙chemical ion pump化学离子泵∙chemical pump化工泵; 化工用泵∙chemical-ion pump化学离子泵∙chemicals feed pump药液注入泵∙Chinese pump差动式泵∙circulating pump循环泵; 环流泵∙clarified water pump清水泵∙clean-up pump清除泵; 吸收泵∙closed centrifugal pump封闭式离心泵∙closed-cycle hydraulic piston pump闭式循环水力活塞泵∙cloverotor pump三叶转子泵∙coal-lifting pump煤水泵∙coal-water pump煤水泵∙coaxial pump laser 同轴抽运激光器∙cog-wheel pump齿轮泵∙cold pump低温泵∙column bottoms pump塔底泵∙combination pump组合泵; 复合泵∙combined suction and force pump吸压泵; 吸压两用泵∙compound pump复式水泵; 复式唧筒∙compressed air pump压缩空气泵∙compressed water pump水泵∙compression pump压气泵; 压缩泵∙compressor vacuum pump压气机真空泵∙concrete pump混凝土泵; 混凝土输送泵∙condensate booster pump凝结水升压泵∙condensate pump冷凝泵; 冷凝水泵; 凝结水泵∙condensate reflux pump冷凝液回流泵∙condensate return pump冷凝回水泵; 冷凝水回水泵∙condensation return pump冷凝回水泵∙condenser pump冷凝泵∙conduction pump传导泵; 导电泵; 电导泵∙cone pump仓式泵∙constant delivery pump定量泵∙constant displacement pump定量泵∙constant flow paddle pump定量叶片泵∙constant flow pump定量泵; 定排量泵∙constant output pump恒功率泵∙constant pressure pump定压泵; 恒压泵∙constant volume pump恒容量泵∙constant-delivery pump定量输送泵∙constant-displacement pump定量送料泵∙constant-flow pump恒定流量泵∙constant-pressure liquid pump恒压液泵∙constant-pressure pump恒定泵∙constantflow pump定量泵∙contactor pump混合泵∙continuous-flow pump连续流泵; 续流泵∙control and primary scavenging pump控制泵和主动回油泵∙controlled-volume pump计量泵∙coolant pump冷却液泵∙coolant pump motor 冷却液泵电动机∙cooling oil pump冷却油泵∙cooling pump冷却泵∙cooling water pump冷却水泵∙Cornish pump科尼什水泵∙corrosion free pump耐蚀泵∙corrosive liquor pump腐蚀性液体泵∙crescent gear pump内啮合齿轮泵∙crescent pump月形齿轮泵∙crude oil pump原油泵∙cryo pump低温抽气泵∙cryogenic fluid pump低温流体泵; 冷剂泵; 深冷流体泵∙cryogenic liquid pump低温液体泵∙cryogenic pump低温泵; 低温抽气泵; 深冷泵∙cryogetter pump低温吸气泵∙cryogenic pump冷凝泵∙cryosorption pump低温吸着泵; 冷凝吸附泵∙cryovacuum pump低温泵∙cup leather for air pump气泵皮碗∙cutter mixer pump带切碎和混合器的泵∙cutter pump带切碎器的泵∙cycloidal pump摆旋泵∙deaerator extraction pump除氧器凝水抽出泵∙deck pump舱面泵∙deep well piston pump深井活塞泵∙deep-pit sewage pump深井污水泵∙deep-well jet pump深井喷射泵∙deep-well plunger pump深井活塞泵; 深井柱塞泵∙deep-well pump深井泵∙deep-well turbine pump深井透平泵∙deep-well type pump深井式水泵∙defueling pump抽油泵∙dehvery pump输料泵∙deicing hand pump防冰系统手摇泵∙delivery (transfer) pump输送泵∙demineralized water circulation pump软水循环泵∙Denison pump丹尼森泵∙diaphragm fuel pump膜片燃料泵; 膜片式燃料泵∙diaphragm pump膜片泵; 隔膜泵; 隔膜式泵∙diaphragm type fuel pump膜片式燃油泵; 膜片式油泵∙diaphragm type metering pump膜片式计量泵∙diaphragm type sludge pump隔膜式污泥泵∙diesel engine driven centrifugal pump柴油机驱动离心泵∙diesel engine driven mixed-flow pump混流式柴油机泵∙diesel engine driven self-priming pump柴油机自吸泵∙diesel engine driven water pump柴油机驱动离心水泵∙diesel oil pump柴油泵∙diesel oil transfer pump柴油输送泵∙diesel self-sprinkling pump set 柴油自喷泵组∙diesel-driven pump柴油机驱动泵∙diesel-driven single centrifugal pump柴油机驱动离心泵∙diesel-driven single stage centrifugal pump柴油机驱机单极离心泵∙differential ion pump差动电离泵∙differential piston pump差动活塞泵∙differential plunger pump差动式柱塞泵; 差动柱塞泵∙differential pump差动泵∙diffuser casing pump扩散泵; 扩压泵∙diffusion pump扩散泵∙diffusion-ejector pump扩散喷射泵∙diluted CaCl 2 solution return pump稀氯化钙回流泵∙diluted HCl solution circulating pump稀盐酸循环泵∙diode pump integrator 二极管积分器∙direct drive pump直接传动泵∙direct-acting pump直接联动泵; 直接作用泵∙direct-acting steam pump直接式蒸汽泵∙direct-injection pump直接喷射式燃料泵∙dirty water pump污水泵∙disc of pump泵轮∙discaling pump鳞屑冲洗泵∙discharge by pump用泵卸车∙discharge of pump水泵出水量; 泵抽水量∙discharge pump排水泵; 排泄泵∙dispensing pump分配泵∙displacement oil pump排量油泵; 活塞式油泵∙displacement pump往复式泵; 排代泵; 排量泵; 活塞泵∙distributor type fuel pump分配式燃料泵∙dither pump高频振动泵∙divergent nozzle pump发散喷嘴扩散泵∙diving pump潜水泵∙donkey engine feed pump辅助发动机添水泵∙donkey pump蒸汽往复给水泵; 辅助水泵∙dosage pump剂量泵; 计量泵∙dosing pump定量泵; 加药泵∙double air pump复式气泵∙double discharge gear pump双出口齿轮泵∙double screw pump双螺杆泵∙double suction centrifugal pump双吸离心泵∙double-acting pump双动泵∙double-piston pump双活塞泵∙double-suction pump双吸泵; 双吸口泵∙down-hole pump井下泵; 井下泵∙downhole engine pump井底水力活塞泵; 井底水力活塞泵∙Downton pump当通手摇泵; 邓通曲柄手摇泵; 达温特曲柄式手摇泵∙drainage pump排泄泵; 疏水泵∙draining pump排水泵∙draw-off pump抽出泵; 抽取泵∙drawing pump抽出泵∙dredge pump排污泵; 泥泵∙drinking water pump饮用水泵∙driven well pump钻井泵∙drowned pump沉没式泵; 潜水泵∙drum pump回转泵; 回转式泵∙dry vacuum pump干式真空泵∙dry-air pump干风泵; 干燥空气泵∙dry-pit pump干坑泵∙dual injection pump复式注油泵∙dual pump复式泵∙dump pump回油泵∙Dunoyer s two-stage pump迪努耶尔两级扩散泵∙duplex air pump双缸气泵∙duplex doubleacting pump复式双动水泵∙duplex piston pump双缸活塞泵∙duplex plunger pump双缸柱塞泵∙duplex power pump双缸曲柄泵∙duplex pump双缸泵; 联式泵; 双筒泵∙duplex pump governor 双缸泵调节器∙duplex reciprocating pump双缸往复泵∙duplex steam pistom pump双缸蒸汽往复泵∙duty of pump泵的能率∙dysfunction of sodium pump钠泵功能障碍∙eccentric driven pump偏心泵∙eccentric pump偏心泵; 偏心轮式泵∙eccentric rotary pump偏心泵∙eccentric sliding vane pump偏心滑叶泵∙eccentric-cylinder rotary oil pump偏心缸回转油泵∙eductor pump排泄泥水泵∙efficiency of pump泵效率∙effluent pump污水排除泵∙ejection air pump喷吸气泵∙ejection pump喷吸泵∙ejector air pump喷射抽气泵∙ejector booster pump喷射增压泵∙ejector jet pump喷射器∙ejector pump喷气引射泵; 喷射泵; 水抽子∙ejector vacuum pump喷射真空泵∙ejector water air pump喷水空气泵∙electric booster pump电动增压泵∙electric centrifugal pump电动离心泵∙electric coolant pump电动冷却液泵∙electric diaphragm pump电动隔膜泵∙electric fuel pump电动燃料泵∙electric mud-slush pump电动泥浆泵∙electric oil pump电动油泵∙electric petrol pump电动汽油泵∙electric pressure testing pump电动式试压泵∙electric pump电泵; 电动泵∙electric pump governor 电动泵调节器∙electric reciprocating pump电动往复泵∙electric selfpriming centrifugal pump电自吸离心泵∙electric service pump电动通用泵∙electric submersible pump电动潜水泵∙electric suction pump电动吸引泵; 电动吸引器∙electrical plunger pump电动柱塞泵∙electrical pressure pump电动压力泵∙electrical pump电动泵∙electrically driven feed pump电动给水泵; 电动供给水泵∙electrically driven pump电动泵∙electrically submersible pump电动潜水泵∙electromagnetic pump电磁泵∙electromagnetic pump wave crest soldering machine 电磁泵波峰焊机∙electronic pump电子泵∙electrostatic getter-ion pump静电消气离子泵; 静电消气离子泵∙elevator pump提升泵∙Elmo pump爱尔莫真空泵∙emergency bearing oil pump备用润滑油泵; 备用油泵∙emergency bilge pump应急舭水泵∙emergency hand pump connector (油轮) 应急手泵联接器∙emergency pump危急排水泵; 应急泵; 备用泵; 事故应急泵∙emulsion pump乳化液泵; 乳浊液输送泵∙enamel lined pump搪瓷泵∙end suction centrifugal pump端吸离心泵∙end-suction pump单侧吸入泵∙engine feed pump发动机供料泵∙engine-driven fuel pump发动机驱动燃料泵∙engine-driven hydraulic pump机动液压泵∙engine-driven portable self-priming pump发动机驱动便携式自起动泵∙engine-driven pump发动机传动泵∙engine-driven vacuum pump机动真空泵∙entrapment vacuum pump捕集真空泵∙evapor-ion pump蒸发离子泵∙evaporation getter-ion pump蒸发吸气离子泵∙evaporation ion pump蒸发离子泵∙evaporation pump蒸发泵∙evaporator feed pump蒸发器给水泵∙evaporator getter pump蒸发吸气泵∙evaporator ion pump蒸发离子泵∙evaporator with heat pump热泵蒸发器∙excavating pump挖泥泵; 排出泵∙express pump高速泵∙external gear oil pump外齿轮油泵∙external gear rotary pump外啮合齿轮泵∙external gear-type oil pump外啮合齿轮式油泵∙extraction pump抽出泵; 抽气泵; 排气泵∙fan pump风扇式泵∙feathering pump顺桨泵∙feed distribution pump给水分配泵∙feed liquid pump供液泵∙feed pump进给泵; 给料泵; 给水泵; 料液泵∙feed water booster pump给水升压泵∙feed water pump给水泵∙feeding pump送料泵∙fertilizer pump液肥泵∙field pump野外用泵∙filling pump充水泵; 注油泵; 装灌泵∙filter pump滤泵; 滤液用泵; 过滤泵; 金属滤泵∙filtration pump过滤泵∙fire and bilge pump消防污水两用泵∙fire extinguishing pump消防用泵∙fire float pump消防艇消防用泵∙fire pump灭火泵∙fire pump and sprayer 灭火喷射器∙fire-fighting pump消防泵∙fixed delivery pump定容量泵∙fixed pump固定泵; 固定的泵∙fixed-displacement pump固定排量泵∙fixed-displacement-variable pressure pump定排量变压力泵∙flange for air pump气泵法兰∙flat linear induction sodium pump平面式直线感应钠泵∙flexible hose pump挠性软管泵; 无脉动泵∙flexible-impeller (rotary) pump挠性轮泵叶∙flexible-impeller pump挠性叶轮泵∙float-controlled drainage pump浮子控制式排水泵; 自动排水泵∙floating pump assembling unit 浮船式水泵机组∙flood pump溢流泵; 疏水泵∙flow control pump计量泵; 可控流量泵∙fluid end of pump泵的流体端∙fluid operated pump液压泵∙fluid packed pump液封泵∙fluid pump液泵; 液压泵; 流体泵∙fluid-flow pump液流泵∙flush water pump冲洗水泵∙flushing pump冲洗泵∙flux pump磁通泵∙fly wheel pump飞轮泵∙Flygt pump弗利特泵∙foot pump脚踏泵; 踏板式泵∙force (forcing) pump加压泵∙force lift pump增压泵∙force pump压力泵∙forced lubrication pump压力润滑泵∙fore pump前置泵; 预抽真空泵∙forevacuum pump前级真空泵∙forevacuum pump system 前级真空抽气系统∙forging pump press 锻造水压机∙forvacuum pump预抽真空泵∙four-stage pump四级泵∙fractionating diffusion pump分馏扩散泵∙fractionating pump分馏泵∙free surface pump自由液面泵∙fresh water circulating pump淡水循环泵∙fresh water cooling pump淡水冷却泵∙fresh water discharge pump淡水抽出泵∙fresh water extraction pump淡水排出泵∙fresh water makeup pump淡水补充泵∙fresh water pump淡水泵∙friction pump摩擦泵∙front pump前泵∙fuel booster pump燃料增压泵; 燃油升压泵∙fuel circulating pump燃料循环泵; 送油泵∙fuel feed pump燃料供给泵; 供油泵∙fuel feed pump plunger 油泵柱塞∙fuel hand pump燃油手泵∙fuel injection pump燃料油喷射泵; 燃油喷射泵∙fuel injection pump camshaft 燃料喷射泵凸轮轴∙fuel injection pump driving spindle 燃料喷射泵传动轴∙fuel injection pump governor 燃料喷射泵调节器∙fuel injection pump tester 喷油泵试验台∙fuel injection pump testing instrument 喷油泵试验装置∙fuel jettison pump应急放油泵∙fuel lift pump燃油泵∙fuel oil pump燃料油泵∙fuel oil service pump燃料油泵; 燃料油供料泵∙fuel pressure pump燃油压力泵∙fuel pump燃料泵; 燃油泵∙fuel pump adapter 燃油泵接头∙fuel pump adjusting screw 燃油泵调节螺钉∙fuel pump air dome 燃油泵空气室∙fuel pump analyser 燃油泵分析器∙fuel pump body 燃油泵体∙fuel pump bowl 燃油泵杯∙fuel pump bowl clamp 燃油油泵滤杯固定卡∙fuel pump bracket 燃油泵支架∙fuel pump case 燃油泵壳∙fuel pump coupling 燃油泵联轴节∙fuel pump cover 燃油泵体壳∙fuel pump deliver line 燃料输送管路∙fuel pump diaphragm 燃油泵膜片∙fuel pump diaphragm spring 燃油泵膜片弹簧∙fuel pump dip stick 燃油泵量油杆∙fuel pump dipstick 燃油泵量油杆∙fuel pump drive shaft 燃油泵主动轴∙fuel pump drive spindle 燃油泵主动心轴∙fuel pump drive sprocket 燃料泵传动链轮∙fuel pump eccentric 燃料泵偏心轮∙fuel pump filter 燃料泵滤清装置∙fuel pump gasket 油泵垫圈∙fuel pump governor 油泵调节器∙fuel pump housing 燃油泵壳体∙fuel pump impeller 油泵叶轮∙fuel pump lever 燃料泵操纵杆∙fuel pump lever clamp 燃料泵操纵杆夹∙fuel pump main housing 燃料泵主壳体∙fuel pump metering mechanism 燃料泵调节机构∙fuel pump plunger 油泵柱塞∙fuel pump priming lever 油泵给油杆∙fuel pump push rod 油泵推杆∙fuel pump rocker arm 油泵摇臂∙fuel pump rocker arm connecting arm 燃油泵摇臂联杆∙fuel pump rocker arm link 燃油泵摇臂联杆∙fuel pump sediment bowl 燃料泵沉淀杯∙fuel pump spindle coupling 燃料泵心轴联轴节∙fuel pump spindle oil thrower 燃料泵心轴溅油环∙fuel pump spindle resilient member 燃料泵心轴弹性接头∙fuel pump strap 燃料泵固定带∙fuel pump suction valve 燃油泵进油阀∙fuel pump sump 燃料泵槽∙fuel pump tank 燃料泵槽∙fuel pump valve retainer 燃油泵阀支片∙with vacuum pump带真空泵的燃油泵∙with vacuum pump带真空泵的燃油泵∙fuel salt pump燃料熔盐泵∙fuel supply pump燃油输送泵∙fuel tank evacuating pump燃油箱抽油泵∙fuel-metering pump燃料计量泵∙fuel-oil pump governor 燃油泵调节器∙fuel-oil transfer pump燃油输送泵∙fuel-priming pump燃油泵∙fuel-pump screen 燃油泵滤网∙fuel-pump tappet 燃油泵挺杆∙Gaede-type pump盖德回转式真空泵∙Gaede s high-speed metal pump盖德高速金属扩散泵∙gas ballast pump气镇泵; 载气泵∙gas ballast roughing-holding pump气镇粗抽泵∙gas bubble pump气举泵; 气泡泵∙gas compression pump煤气压缩泵; 煤气压缩机∙gas jet pump气体引射泵∙gas oil pump气体油料泵∙gas pump煤气吹送机; 鼓风机∙gas pump cycle 气泵循环∙gas pump meter 气泵表∙gas recycle pump气体循环泵∙gas-lift pump气体提升泵∙gas-turbine-pump combination 涡轮泵组∙gas-turbine-pump system 燃气轮机泵组∙gasoline feed pump汽油泵∙gasoline lift pump汽油泵∙gasoline pressure hand pump汽油压力手泵∙gasoline pump汽油泵; 加油泵∙gasoline pump assembly 汽油泵总成∙gasoline pump case 汽油泵壳∙gasoline pump diaphragm protecting washer 汽油泵膜片保护垫圈∙gasoline pump glass-bowl U-clamp 汽油泵油杯U形钢丝夹∙gasoline pump settling bowl 汽油泵沉淀杯∙gasoline pump settling glass bowl 汽油泵沉淀玻璃杯∙gasoline supply pump汽油泵∙gasoline-injection pump汽油喷射泵∙gathering pump辅助小水泵∙gear box draining pump齿轮箱泄油泵∙gear oil pump齿轮油泵∙gear oil pump with connecting bend pipe 带连接弯管的齿轮油泵∙gear pump齿轮泵∙gear pump for heavy oil service 重油齿轮泵∙gear pump strainer assembly 齿轮泵滤网装置∙gear pump with pressurized side plates 带承压侧板的齿轮泵∙gear rotary pump齿轮回转泵∙gear spinning pump齿轮纺丝泵∙gear type booster pump齿轮式增压泵∙gear type size pump齿轮式输浆泵∙gear wheel metering pump齿轮计量泵∙gear wheel pump齿轮泵∙gear-type pump齿轮泵∙gear-type recycling pump齿轮式循环泵∙gear-within-gear pump内啮合齿轮泵∙geared feed pump齿轮传动给水泵∙geared oil pump齿轮油泵∙geared pump齿轮传动泵∙Geissler pump盖斯勒泵∙general purpose pump通用泵∙general service pump通用泵∙generator pump发生器泵∙geometrically similar pump几何相似泵∙gerotor pump盖劳特泵∙Gerotor pump摆线泵∙getter pump离子溅射泵∙getter-ion pump吸气离子泵; 离子溅射泵∙governor pump调速器泵∙governor pump gear 调节泵∙governor pump gear shaft 调节泵齿轮轴∙gravel pump砂砾泵∙grease pump润滑油泵; 黄油泵; 黄油油泵∙grout pump灌浆泵; 水泥灌浆泵∙grouting pump灌浆泵∙hand air pump手动气泵∙hand bilge pump手摇舱底水泵∙hand by-pass pump (内燃机的) 手增压泵∙hand deck-pump手摇舱面泵∙hand fire pump手摇消防泵∙hand fuel pump手摇燃料泵∙hand lever type grease pump手摇滑脂增压器∙hand oil pump手摇油泵∙hand plunger grease pump手动杠杆式上油泵∙hand priming of pump手起动泵∙hand pump手泵; 手力唧筒∙hand semi-rotatory pump手摇半转泵∙hand sprayer with platform mounted pump泵装在平板上的手动喷雾器∙hand water pump手动水泵∙hand-operated air pump手动打气泵∙hand-operated pump手摇泵∙Harrington s water-jet pump哈林顿喷水抽气泵∙head of pump泵压头∙head pump甲板冲洗泵; 水头泵∙heat pump热泵∙heat pump drier 热泵式干燥机∙heat-exchanger pump热水泵∙heater-drip pump加热器疏水泵∙heavy fuel booster pump重油升压泵∙heavy fuel feeding pump重油供给泵∙heavy oil pump重油泵∙helical type pump螺旋式泵∙helical-gear pump斜齿轮泵∙heparin pump肝素泵∙hermetic screw pump密闭式螺杆泵∙hermetically sealed magnetic drive pump封闭式电磁泵∙herringbone gear pump人字齿轮泵∙high lift pump高扬程泵∙high performance hydraulic pump高性能液压泵∙high performance vane pump高性能叶片泵∙high pressure axial piston pump高压轴向活塞泵∙high pressure bicycle pump高压气筒∙high pressure complex master & auxiliary vane pump高压子母叶片泵∙high pressure double-cylinder oil pump高压双缸油泵∙high pressure fixed displacement vane pump高压定量叶片泵∙high pressure fuel injection pump assembly 高压喷油泵总成∙high pressure fuel pump高压燃料泵∙high pressure hydraulic gear pump高压液压齿轮泵∙high pressure oil pump高压油泵∙high pressure oil pump tester 高压油泵试验机∙high pressure oil pump testing platform 高压油泵试验台∙high pressure oiling pump高压注油泵∙high pressure pipe pump高压管道泵∙high pressure pulse pump高压脉动泵∙high pressure pump高压泵∙high pressure spray pump高压喷雾泵∙high pressure testing pump高压试压泵∙high pressure vane pump高压叶片泵∙high pressure variable vane pump高压变量叶片泵∙high pressure water feeding pump for boiler 高压锅炉给水泵∙high pressure water-injection pump高压注水泵∙high quality vane pump高性能叶片泵∙high specific speed pump高比速泵∙high speed pump高速泵∙high temperature absorption heat pump高温型吸收式热泵∙high temperature heat pump高温热泵∙high temperature hot water pump高温热水泵∙high temperature metering pump高温计量泵∙high temperature water pump assembly 高温水泵总成∙high vacuum oil diffuse pump高真空油扩散泵∙high vacuum pump高真空泵; 高度真空泵∙high viscosity triple screw pump高粘度三螺杆泵∙high water base vane pump高水基叶片泵∙high-energy laser pump高能激光泵∙high-lift pump高压泵; 高扬程水泵∙high-low pump高低压泵∙high-pressure boiler-feed pump高压锅炉给水泵∙high-pressure diaphragm pump高压隔膜泵∙high-pressure fuel injection pump assembly 高压油泵总成∙high-pressure plunger pump高压柱塞泵∙high-specific speed pump高比转速泵∙high-temperature water pump assembly 高温水泵结合组∙hoist pump起重机油泵∙hoist pump body 起重机油泵体∙hoist pump body bushing 起重机油泵体衬套∙hoist pump bracket 起重机油泵托架∙hoist pump check valve 起重机油泵止回阀∙hoist pump check valve body 起重机油泵止回阀体∙hoist pump control rod 起重机油泵控制杆∙hoist pump control valve 起重机油泵操纵阀∙hoist pump cover 起重机油泵盖∙hoist pump cover gasket 起重机油泵盖垫密片∙hoist pump drive gear 起重机油泵主动齿轮∙hoist pump drive shaft 起重机油泵主动轴∙hoist pump drive shaft bushing 起重机油泵传动轴衬套∙hoist pump intermediate gear 起重机油泵中间轮∙hoist pump intermediate shaft 起重机油泵中间轴∙hoist pump manifold 起重机油泵歧管∙hoist pump operating lever 起重机油泵操作杆∙holding pump前支泵∙hollow-plunger pump空心柱塞泵∙homopolar generator electromagnetic pump同极发电机式电磁泵∙horizontal air pump卧式气泵∙horizontal centrifugal pump卧式离心泵∙horizontal divergent-nozzle pump水平发散喷嘴扩散泵∙horizontal one-stage pump卧式单级泵∙horizontal pump卧式泵∙horizontal screw pump卧式螺旋泵∙horizontal spindle pump卧式心轴泵∙horizontal volute propeller pump卧式蜗壳旋桨泵∙horizontal-split multi-stage pump水平剖分式多级泵∙hose (type) pump软管式泵∙hot oil centrifugal pump热油离心泵∙hot oil pump热油泵∙hot recycle pump热循环泵∙hot water circulating pump热水循环泵∙hot well pump热井泵; 热水池泵; 凝结水泵∙hot-feed remotecontrolled pump热馈遥控泵∙hot-water extraction pump热水抽吸泵∙hot-water pump cylinder cover 热水泵缸盖∙hot-water pump cylinder liner 热水泵缸衬∙hot-water pump piston 热水泵活塞∙hot-water pump piston follower 热水泵活塞填密盖∙house service pump厂用水泵∙Humphrey gas pump内燃水泵∙hydraulic air pump射水空气泵∙hydraulic bottomhole pump水力井下泵∙hydraulic control pump液压控制泵∙hydraulic gear pump液压齿轮泵∙hydraulic oil pump discharge line 液压油泵泄放管路∙hydraulic oil pump driving device housing 液压油泵传动装置壳体∙hydraulic pump液压泵; 水力泵; 水压泵∙hydraulic pump aggregate 液压泵组∙hydraulic pump discharge 液压泵泄放∙hydraulic pump lever 液压泵接合杆∙hydraulic pump placer 液力泵喷浆机∙hydraulic pump sprayer 水力泵喷雾器∙hydraulic steering pump液压转向助力泵∙hydraulic test pump试压泵∙hydraulic traversing mechanism pump液压方向机油泵∙hydraulic vane pump水力叶轮泵∙hydraulically driven pump液压传动泵∙hydro-steam ejector pump水蒸汽喷射泵∙hydrogen pump氢泵∙hydroseal (sand) pump水封式泵∙hydroseal pump水封泵∙hyperbolic screw pump双曲线式螺杆泵∙Hyvac pump高真空泵∙immersed pump沉没泵∙immersible pump潜水泵∙IMO pump叶莫螺旋泵∙impeller of pump泵叶轮∙impeller pump叶轮泵; 转子泵∙impulse pump冲击式泵∙in-line plunger pump直列式柱塞泵∙in-line pump管线泵; 直列式柱塞泵∙inclined piston pump倾斜柱塞泵∙independent pump单动泵∙induction pump交流电磁泵; 电磁感应泵∙industrial heat pump工业热泵∙industrial pump工业泵∙industrial pump factory 工业泵厂∙inflating pump打气泵; 打气筒∙inflation pump打气泵; 打气筒∙inflator pump充气泵; 充气筒∙infusion pump灌流泵∙injection pump喷射油泵; 喷油泵∙injection pump assembly 喷油泵总成∙injection pump barrel 喷油泵套筒∙injection pump housing 喷射泵体∙injection pump plunger 喷射泵柱塞; 喷油泵柱塞∙injection pump stroke 喷油泵柱塞行程∙injector cooling pump喷油器冷却泵∙injector pump喷射泵; 高压油泵∙ink pump墨泵∙inline pump管道泵∙insert pump杆式泵∙inside-packed type piston pump内部填塞式活塞泵∙insulin pump胰岛素泵∙integral air pump整装抽气泵∙integral circulating pump整体式的循环泵∙intermediate pump中真空泵∙internal combustion pump内燃泵∙internal external rotary pump内外转子泵∙internal gear pump内齿轮泵∙internal gear rotary pump内齿轮回转泵∙internal screw pump内螺旋泵∙intraaortic balloon pump主动脉内气囊泵∙inversion pump rate 反转泵速率∙ion pump离子泵∙ion-evapor pump离子蒸发泵∙ion-getter pump离子吸气泵∙ionization pump离子泵∙irrigation pump灌溉泵; 灌溉水泵; 灌溉用泵∙jack-head pump随动泵; 副泵∙jack-pump油矿泵∙jacket water pump气缸套冷却水泵∙jacketed pump外套泵; 夹套泵∙jacking pump for bearings 顶轴油泵∙jacking(oil) pump顶轴油泵∙Janney pump轴向回转柱塞泵∙jerk pump脉动泵; 脉动作用泵; 高压燃油喷射泵∙jerk-pump fuel system 脉动泵供油系统∙jet air pump喷射泵∙jet centrifugal pump喷射式离心泵∙jet condenser pump喷水凝气式泵∙jet deep-well pump喷射式深井泵∙jet pump喷射式泵; 喷吸泵; 射流泵∙jet strip pump喷射清舱泵∙jet-deffusion pump喷射扩散泵∙juice pump糖汁泵∙Junker's pump容克型喷油泵∙jury pump辅助泵; 备用泵∙K-pump钾泵∙kick water pump反冲式水泵∙kinetic air pump动力空气泵∙kinetic pump动力泵∙Kinney pump金尼泵∙knapsack sprayer with piston pump背负式活塞泵喷雾器∙La Bour centrifugal pump拉布离心泵∙labyrinth pump迷宫泵∙lamp bulb vacuum pump灯泡真空抽气泵∙large discharge pump大排量的泵∙laser pump (ing) 激光泵浦∙lead circulating pump铅液循环泵∙lead pump铅液泵∙leak-proof motor pump防漏式电动泵∙leakproof pump密封泵∙lever action air pump杠杆抽气泵∙lever action pump and hose 杠杆泵连软管∙lift of pump泵压头高度; 泵扬程∙lift of pump suction 泵的抽吸高度∙lift of the pump suction 泵的吸高∙lift pump提升泵; 抽扬泵; 扬水泵; 升水泵; 升液泵∙lifting pump提升泵∙light diffusion pump光扩散泵∙light pump光泵∙line pump管线泵∙linear induction pump线性感应泵∙liquefied gas pump液化气泵∙liquid feed pump液体进料泵∙liquid jet air pump喷吸气泵∙liquid oxygen pump液氧泵∙liquid pump液泵∙liquid ring pump液体环式泵∙liquid rotary pump液环泵∙liquid sludge pump液体厩肥泵; 泥浆肥料泵∙liquid-hydrogen pump液氢泵∙liquid-metal MHD pump液态金属磁流体泵∙liquid-pump seal 液泵密封∙liquid-ring vacuum pump液环式真空泵∙liquid-sealed pump液封泵∙liquor pump液体泵∙list pump横倾平衡泵∙live hydraulic pump独立传动的液压泵∙lobe pump凸轮泵; 罗茨泵∙lobed element pump罗茨泵∙low head pump低压头泵∙low pressure high volume pump低压力大排量泵∙low pressure hydraulic gear pump低压液压齿轮泵∙low pressure pump低压泵∙low pressure vacuum pump高真空泵∙low speed high torque hydraulic pump低速大扭矩液压泵∙low speed pump低速泵∙low temperature pump低温泵∙low-head centrifugal pump低水头离心泵。
机械类外文翻译-声发射检测初生空化及其应用—60KW离心泵最佳效率点案例研究
The application of Acoustic Emission for detectingincipient cavitation and the best efficiency point of a60KW centrifugal pump; case studyL. Alfayez, D. Mba, G. Dyson July 2005 AbstractPumps play a significant role in Industrial plants and need continuous monitoring to minimize loss of production. To date, there is limited published information on the application of Acoustic Emission (AE)to incipient pump cavitation. This paper presents a case study where AE has been applied for detecting incipient cavitation and determining the best efficiency point (BEP)of a 60KW centrifugal pump. Results presented are based on NPSH (Net Positive Suction Head)and performance tests. In conclusion the AE technique was shown to offer early detection of incipient cavitation, furthermore, the technique has demonstrated the ability to determine the BEP of a pumpKeywords:Acoustic Emission; best efficiency point; cavitation; condition monitoring;Pump performance1.IntroductionTypically the pump manufacturer will undertake performance and NPSH(Net Positive Suction Head)tests on supplied pumps, the significance of the latter is to determine the 3%drop in head at which serious cavitations will occur. The NPSH can be expressed as the difference between the suction head and the liquids vapour head. The concept of NPSH was developed for the purpose of comparing inlet condition of the system with the inlet requirement of the pump. Cavitation causes a loss of pump efficiency and degradation of the mechanical integrity of the pump. It must be noted that cavitation starts to develop before the3%drop in head. It is generally accepted that the critical pressure for inception of cavitation is not constant and varies with operation fluid physical properties and the surface roughness of the hydraulic equipment.Application of the high frequency Acoustic Emission (AE)technique in condition monitoring of rotating machinery has been growing over recent years[1-9].Typical frequencies associated with AE activity range from 20 KHz to 1MHz.The most commonly used method for identifying the presence of cavitation is based on observations of the drop in head. Whilst other techniques such as vibration analysis and hydrophone observations for pump fault diagnosis are well established, the application of AE to this field is still in its infancy. In addition, there are a limited number of publications on the application of AE to pump health and cavitation monitoring. Derakhshan et al [10]investigated the cavitation bubble collapse as a source of acoustic emission and commented that the high amplitude pressure pulse associated with bubble collapse generated AE. With the AE sensor was placed on the actual specimen experiencing cavitation Derkhshan observed increasing AE r.m.s levels with increased pressure of flow and cavitation. However, with the AE sensor mounted on the tank wall the reverse was observed, decreasing AE r.m.s levels with increasing pressure and cavitation. This was attributed to a visible bubble cloud that increased with pressure. It was commented that this cloud attenuated the AE signature prior to reaching the transducer on the wall casing. Neill et al[11,12]assessed the possibility of early cavitation detection with AE and also noted that the collapse of cavitation bubbles was an impulsive event of the type that could generate AE. It was observed that when the pump was under cavitation the AE operational background levels dropped in comparison to non-cavitating conditions. In conclusion Neill stated that loss in NPSH before the 3%drop-off criterion was detectable with AE and evidence of incipient cavitation was detectable in the higher frequency band(0.5 to 1MHz).The papers reviewed above have clearly associated AE with the collapse of cavitation bubbles. The presence of cavitation has been shown to increase or decrease operational AE noise levels[10,11,12].This paper presents a case study to ascertain the applicability of the AE technique for detecting incipient cavitation, and, to access the opportunities offered by the AE technique for determining the best efficiency point(BEP)of a pump.2. Experimental setupA series of performance and NPSH tests were undertaken on a two stage‘ DavidBrown’60KW centrifugal pump(Model DB22)with a maximum capacity of 204m ³/h at an efficiency of 70.6%.These tests were undertaken using a closed loop arrangement with a vacuum facility in accordance with BS 9906.It must be noted that best endeavours were undertaken to reduce the time taken to reach the required flow rate during performance and NPSH tests.Acoustic Emission sensors were located at a distance of 0.5 m from suction flange; at the suction flange; on the pump casing in the vicinity of impeller suction eye; on the casing in the vicinity of the impeller discharge tip;0.5m from discharge flange, see figure 1.3. Data acquisition systemsThe AE sensors used for all of the experiments were broadband type sensors with a relative flat response in the region between 100 KHz to 1MHz (Model:WD,‘Physical Acoustics Corporation’).The output signal from the AE sensors was pre-amplified at 40dB.Continuous AE r.m.s values were calculated in real time by the Analogue to Digital Converter(ADC).The sampling rate for acquisition was set at 100ms for all tests and the time constant for calculating the AE r.m.s was also set at 100 ms.4. Experimental results and observation4.1 Performance testFigure 2 details the performance characteristics of the pump, highlighting the BEP at94.5m/hr. The performance test were undertaken twice to ensure repeatability. Observationsof AE r.m.s activity during the performance test are displayed in figure 3.During the performance test, AE activity from the sensor located in the vicinity of impeller on pump casing was found to have the largest magnitude, providing the best position for correlating AE activity to pump performance. It was observed that the minimum AE r.m.s value was obtained for a flow rate of 94.5m/hr. At this flow rate the AE activity generated from the fluid flow within the pump and pipes was lowest in comparison to other flow rates. Either side of this flow rate resulted in increasing AE r.m.s activity with increased flow rates. Based 3 3on these observations it was concluded that the BEP must occur where there was minimal flow turbulence in the system, and hence minimum AE activity. The predicted efficiency point of 94.5m/hr was checked with the manufacturer’s performance test and was found to be accurate. Interestingly this is the first known correlation between AE activity and the BEP and agrees with observations of McNulty [13], though McNulty’s investigation was centred at frequencies in the audible range; lower than the AE range. The advantage offered by the AE technique is the inherent rejection of typical mechanical and process operational background noise(less than 20 KHz)4.2 NPSH testA total of three NPSH tests were undertaken at flow rates of 101,141 and 180m/hr, see figure4.As with the performance tests, the best AE signature response was located on the pump casing in the vicinity of the impeller eyeFigures 5 to 7 detail the associated AE r.m.s levels for the three flow rates considered.The following observations were noted:At a flow rate of 101m/h an increase of 165%in AE r.m.s levels was observed from an NPSH value of 8.2m to 7m.Relatively constant levels followed until an NPSH of 5.8 m when a rapid decrease in AE r.m.s levels was noted. With further reductions in NPSH, spikes in AE r.m.s signal vels associated with cavitation was also observed by Neill[11].Observations of AE levels from the suction and discharge pipes mirrorthis observation.a flow rate of 141m/h an increase of 43%in AE r.m.s was observed at NPSH value of 12.7m to 9.3m.A rapid decrease in level was noted at an NPSH of 9.3m.With further reductions in NPSH, spikes in AE r.m.s signal were observed as with the test a flow rate of 101m/hr. Again, observations of AE levels from the suction and discharge pipes mirrored this observation.At a flow rate of 181m/h an increase in AE r.m.s of 223%was observed at NPSH value of 11m to 7.3m.A gradual decrease in the AE levels followed to an NPSH of 1.7 m, where an increase in the r.m.s value was observed.5.Discussions5.1Performance testThe observations of AE activity during the performance test were very encouraging. The ability to predict a systems BEP by observing variations in the AE r.m.s response offer process engineers a powerful tool for monitoring plant performance. Whilst further research is still required the opportunities offered by such a tool could be applied to determining system BEP irrespective of the type of medium (liquid, gases, semi-solids, etc )in the system. The observations noted in this investigation correlate with hydrophone measurements undertaken by McNulty [13],where the minimum sound intensity coincided with the pump BEP.5.2 NPSH testIt is essential to understand the cavitation sequence if it is to be correlated to observed AE activity. Once the suction pressure starts to decrease, vortexes start to occur at the impeller blade tips. With further reduction in pressure these vortexes take the form of travelling bubbles in the liquid. These bubbles are initially created in lower pressure area on the suction surface of the blades. Eventually the bubbles move to higher-pressure areas where they collapse. With even further reduction in the suction pressure, the bubbles combine into larger cavities. These cavities are usually formed on the impeller blade suction surface.For all NPSH tests an increase in AE r.m.s levels was noted as values of NPSH started to decrease. A maximum level of AE r.m.s was reached after which further reductions in NPSH resulted in a decrease in AE r.m.s levels. This was also observed on the sensors located on the suction and discharge flanges. It is postulated that at the start of the NPSH test the increase in AE r.m.s levels was attributed to the onset of cavitation. The drop in AE r.m.s with decreasing NPSH values was attributed to the attenuation caused by bubble clouds. Following the creation of bubbles, and the eventual formation of the bubble cloud, the AE r.m.s levels were expected to drop. The loss in AE strength due to the presence of cavitation and the bubble cloud was noted by Neill[11,12]and Derakhshan [10]respectively.5.3 ConclusionsThe results from acoustic emission analysis have shown a clear relationship between AE activity measured from the pump casing, suction and discharge pipes, and incipient cavitation. At a relatively high NPSH value, when incipient cavitation is known to occur, an increase in AE r.m.s levels was observed.However, as cavitation developed a reduction in AE r.m.s levels due to attenuation was noted This would suggest that the AE technique is more suited to detecting incipient, and not developed, cavitation.AE was also found to have enormous potential in determining the BEP of a pump and/or process employing pumps though further research on this observation is required.6.References1.Mba, D. and Bannister, R.H.(1999).Condition monitoring of low-speed rotatingmachinery using stress waves:Part1 and Part 2.Proc Inst Mech Engrs.213(3),Part E,153-185.2.Morhain, A, Mba, D, Bearing defect diagnosis and acoustic emission Journal of Engineering Tribology, I Mech E, Vol 217,No.4,Part J,p257-272,2003.ISSN1350-6501Mba,D.(20023.Mba,D.(2002).Applicability of acoustic emissions to monitoring the mechanicalintegrity of bolted structures in low speed rotating machinery: case study. NDT andEInternational.35(5),293-3004. D. Mba, A. Cooke, D. Roby ,G. Hewitt, Detection of shaft-seal rubbing in large-scalepower generation turbines with Acoustic Emissions; Case study. Journal of Powerand Energy-Part A,I Mech E, Vol 218,No.2,Part A,p 71-82,March 2004.ISSN0957-6509. 5. Toutountzakis, T. and Mba, D.(2003).Observation of Acoustic Emission Activity duringGear Defect Diagnosis. NDT and E International.36(7),471-477.6. Kristoffer Bruzelius D. Mba(2004),An initial investigation on the potentialA pplicability of Acoustic Emission to rail track fault detection. NDT&EInternational,37(7),507-516.7. L. D. Hall and D. Mba,(2004)Diagnosis of continuous rotor–stator rubbing in largescaleturbine units using acoustic emissions,Ultrasonics,41(9),765-773.8 .L. D. Hall and D. Mba,(2004),Acoustic emissions diagnosis of rotor-stator rubsusing the KS statistic, Mechanical Systems and Signal Processing,18(4),849-868.9. D. Mba,N, Jamaludin, Monitoring extremely slow rolling element bearings: Part IandII,NDT and E International,35(60),349-366,2002.10. O. Derakhshan, J.Richard Houghton, R. Keith Jones(1989).Cavitation Monitoring ofHydro turbines with RMS Acoustic Emission Measurements. World Meeting onAcoustic Emission,p305-315,March 1989.11. G D Neill, R L Reuben, P M Sandford (1997).Detection of Incipient cavitationin Pumps Using Acoustic Emission. Journal of Process MechanicalEngineering,ImechE,211(4),267.12. G D Neil, et al.(1996)Detection of Incipient cavitation in Pumps UsingAcoustic Emission. In proceedings of COMADEM 96.Sheffield University, July 16-18,391-401.13. P.J. McNulty(1981)Measurement Techniques and Analysis of Fluid-Borne Noisein Pumps. National Engineering Laboratory. NEL Report No声发射检测初生空化及其应用-60KW离心泵最佳效率点案例研究L.法浦亚斯，D.姆巴，G.戴森 2005年7月摘要泵在工业领域发挥着显著的作用，需要持续监控，以尽量减少生产损失。
水泵术语
液体泵术语空化作用（Cavitation）----当NPSHa < NPSHr时，流体中小气泡形成并剧烈内裂的过程。
死区（Dead Head）----关断泵送功能后，泵仍继续运转而不至损坏的能力。
建议此性能仅用于离心泵。
密度（Density）----单位体积的重量，常用表示单位有：磅/立方英尺或克/立方厘米。
淹没充液法（Flooded Suction）----液体在重力作用下从高于泵入口位置的液面流入泵中。
安装离心泵时建议考虑此法。
流量（Flow）----表示泵送液体体积大小的量纲。
常用表示单位为加仑/小时（GPH）,加仑/分钟（GPM），升/分钟或毫升/分钟。
流体（Fluids）---- 包括液体、气体及液体、固体和气体的混合体。
本产品样本目录中的术语“流体” 和“液体”均表示纯液体或液体与气体或固体的混合体，其在泵应用场合中的性能大体相同。
压头（Head）---表示压力的量纲。
离心泵的压头单位为英尺，用以表示泵送水柱高度（不计摩擦损失）。
压力（Pressure）----某一液体作用在容器壁或管壁上的力。
常用表示单位为磅/平方英寸(psi)。
灌泵（Prime）----当液体源的液位低于泵的安放高度时，给泵灌注液体使其启动。
通过进液管线上的底阀，或泵内的阀或小室将灌注的液体保持在泵中。
密封装置（Seals）----装在泵壳和/或泵轴上、防止泵中液体泄漏的装置。
自吸泵（Self-Priming）----能自行将液面低于泵入口位置的液体抽吸上来（吸升）的泵。
与其相对照的是采用淹没充液的泵。
比重（Specific Gravity）----某一特定体积的液体重量与相同体积的纯水重量之比。
泵送较重的液体（比重大于1.0）时所需的驱动功率也相应增大。
静扬升压头（Static Discharge Head）----从泵入口位置到被扬升流体达到最高点位置的垂线距离，表示单位为英尺。
粗滤器（Strainer）----安装在泵入口处、防止异物进入泵中损坏机件的装置。
飞机机电设备维修《Dictionary of Aeronautical Terms上》
Dictionary ofAeronautical TermsThird EditionCombustion has not taen monly used in aircraft maintenanceabrasive blasting A method of removing carbon and other contaminants from machine bination of the rotation of the earth and the circulation of the air relative to the earthabsolute ero The temmunication addressing and remunication lin between an airliner in flight and the airline’s main ground facilitiesData is collected in the aircraft by digital sensors and transmitted to the ground facilities Rees ero outside of the earth’s gravitational fieldacceleration chec gas turbine engine maintenance chec A maintenance chec of a gas turbine engine in which the time required for the engine to acceleratefrom idle Rmonly used as accemonly installed engine accessoriesaccessory drive gearbo A e the sameIf the air e hotter — its temmon angle In the study of trigonometry, the adjacent side of one of the acute angles of a right triangle is the side of the triangle other than the hymunications A term used for a radio antennaaerial monly used beacons are:Color Meaningwhite and green ---------------------------------------lighted land airbustor after the engine is shut down Afterfiring is normally caused by a malfunctioning manifold drain valveafterfiring recies uniformly cooledAGL altitude Altitude, ees from the two Gree words “a,〞meaning no, and “gonic,〞 meaning angleagricultural aircraft Aircraft esbustor and is used to direct the airflow into the combustor at the merce The merce or the transmerce〞air conditioning The e serious ost commonly used tymerce for the transmonly used classifies air masses munications equimunications data, navigational facilities, and certain smonly used rotating beacons are:Color Meaningwhite and green ------------------------------------lighted land airmunications and radar that allow controllers to eemand center See ATCSCCair traffic service A generic term meaning flight information service, alerting service, air traffic advisory service, and air traffic control service, including area control service, amon Allen wrenches are bent with a 90° angle so they have a short and a long legalligator clibined with a metal to change its characteristicsalloying agent A chemical element mied with a base metal to form an alloy The alloying agents change the characteristics of the base metalalloy steel Steel into which certain chemical elements have been mied Alloy steel has different characteristics from those of simmunications search for an overdue, unremon-base ammon-base transistor stage droes either imes inadvisable〞alternate air valve recies clogged with ice, the alternate static air valve can be omon base arranged in lines Altocumulus castellanus indicates instability and turbulence at the altitude of the cloudALTRV altitude reservation Airsbine or join ingredients to form a single bodyamateur-built aircraft Aircraft built by individuals as a hobby rather than by factories as commercial mercially built aircraftamber A hard, yellowish, translucent, fossilied tree resin that is currently used to mae small ornaments Centuries ago it was discovered that when a es a liquid at -28°F and freees at °FAmmonia is used to case harden steel by the nitriding bines with aluminum, which has been alloyed with the steel, to form aluminum nitride Aluminum nitride gives the steel a very hard surfaceamorbine mechanical analogs of numbers to solve mathematical binations of conditions that are either on or off The digital values can be mon monly used: The degree, the radian, and the grad:One degree is the amount of sebustor gas turbine engine combustor for a gas turbine engine made in the shabustor There, it is mied with air from the combustors mae the most effective use of the sbustor used in both large and small gas turbine engines annular duct A duct, or monly called es less negative, or taes on a munications equimended airsmutator andbrush or between switch contacts when the flow of current is interrumonly called RNAV, in which VORTAC stations can be electronically moved to any convenient location A station that has been “moved〞 is called a way bined frontal area of the fuselage and the wing form a smooth curve from nose to tail An airmonly used to fill electric light bulbs and the envelomunication lins between airliners in flight and the airline ground facilities ARINC also sets standards for communication equimunications The frequency of the carrier signal es from “stern,〞 which is the aft, or rear monly used tyes nearer and nearer to a given line without ever touching itasynchronous electronic circuit omand center An air traffic service facility that consists of four omand mand center See ATCCCATF aerodynamic twisting force The aerodynamic force that acts on a rotating es lighter, or less dense, as its height above the earth increasesThe tembination with other atomsAn atom is made ubine to form a heavier nucleus When the nuclei combine, a tremendous amount of energy, usually in the form of heat and light, is releasedatomic number The number of e from the smunications system A system of communications that munications systemaugend mathematics The number in an addition es a solid solution rather than a mands from onboard navigation equimand a turn, and to trim the aircraft about any of its three aesautomatic-reset circuit breaer A thermally actuated electrical circuit e in sets of three One bination aial and centrifugal commonly used by meteorologists to refer to a cyclonic shift counterclocwise in the Northern Hemismon term for bicarbonate of soda NaHCO3 A solution of baing soda and water can beused to neutralie electrolyte se to a commercial sheet metalballast aircraft balance A weight es down, it follows a ballistic trajectory, its natural curved monly usedhigh-level language for digital commands used in BASIC are similar to commands used in the English languageThe acronym BASIC comes from Beginners All-mon body The beat frequency is the difference between the frequencies of the two original vibrationsBeaufort scale A number rating from ero to 12, used by the weather bureau to describe wind smonly used than the belbell gear The large gear in a bined with about three mon emitter ammunications receivers when receiving unmodulated CW continuous wave signalsThe unmodulated CW has a frequency that is too high to hear, so it is mied with the outbustion chamber bisector of a line A es from the words binary digitA bit, either a ero or a one, is the smallest mon bitumensbituminous munications or navigation in the UHF or VHF bandsblade area helicomunications The es a certain amount lower than that of the ambient airAir flowing through the doors adds to the normal inlet air es a vamonly used for lumber One board-foot is the amount of lumber in a b material, and the advanced comes from the figure of smonly used bottled gasesbottom See cone bottomingbottom dead center recie round and thus begin to straighten the tubeThe amount the tube straightens is bustion, emutator bars Current induced into the armature windings is brought out of the windings through the brushes Starter motor bushes which must carry large amounts of current are often made of a coe shorter, formingthe shomonly used term for anything that es so great that the air no longer flows smoothly over the surface but breas awayburble bustion chambers of a gas turbine engine burner combustors, or burners, of a gas turbine engine Burner bustorburning The bustion chambers of the engine and mies with the hot gases in the tail munications Any combination of letters or numbers that identifies a communications facilitycall-umunications bustor gas turbine engine combustor used in some of the large turbojet and turbofan engines It consists of individual cans into which the fuel is sbustor gas turbine engine combustor, or burner section of a gas turbine engine made ubustors were used on some of the early turbojet engines, but most modern engines use the more efficient annular, or can-annular combustorscanvas A heavy, tightly woven cloth made of cottoncabustionCarbon blac is used in the manufacture of aircraft tires and as a bine it with water to mae sugar Humans and animals give off carbon dioide in their ehaled breath Even though carbon dioide maes umercially becauseof its use as a fire etinguishing agentcarbon dioide fire etinguisher A fire etinguisher that holds carbon dioide gas under a es out of the etinguisher in the form of a snow and blanets the fire The snow changes into CO2 gas and bine with the fuel, the fire goes outcarbon-film resistor electrical comes less than when the diabustion of an organic fuel Carbon monoide is es the ses hard and brittle, while the center of the steel remains relatively soft and toughThe e damaged, case mon nail of the same length castellated nut A form of heagonal nut a si-sided nut that has slots cut across its end A cotter e iron oide,or rustcatalytic cracing es the anode and is corroded, while the mon name for sodium hydroide, NaOH Caustic soda is often called lyecavitation A condition that eists in a fluid e more bines a twist drill and a 60° countersin A center drill is used to drill the center hole in a bination of weight and center of gravity location that falls within the envelobined center-rabines the function of an air route traffic control center ARTCC and a radar aing mended for use to bymended flyways and associated altitudes is strictly voluntary VFR Flyway inal Area Charts charted visual flight bination of two or more atoms of chemical elements which have joined together to form molecules A combine to form water, a chemical reaction taes bines with a metal For eammonly called solid, or chemical, oygen systems They are used as bacues uniform throughoutchoe-ines from the sound made by the enginechobined Because the bustible materials such as wood, bustible liquids as its fuelClass C airsbustible gases from the inside of a gas turbine engine after an aborted startThe engine is rotated with the starter so the command signals with the outmands have been comes dromon e together, or unite, to form a whole unit In a water sees from the fact that the two conductors are coaial — they have the same center Coaial cable, or coa, as it is normally called, is used for attaching radio receivers and transmitters to their antennacoaial mand signals are similar to English commands The acronym COBOL is taen from COmmon Business Oriented Languagecoc The British term for a valve used to stobustion section The cold section includes the inlet duct or ducts, coming too hot Too hot a nose core can cause bination of these facilities is called a VORTAC stationcolor The characteristic of light caused by the different wavelengths of the electromagnetic energy that mae ubinational logic digital electricity Digital circuitry which incorbination chuc machine tool combination chuc can be moved in or out as a unit, or each of the jaws can be moved sebination combustors combination inertia starter recibination square layout and measuring tool A layout and measuring tool which has a steel scale fitted into the head of a square One face of the square head forms a 90° angle, and the other face forms a 45° angle to the scale combination wrench mechanic’s hand tool A mechanic’s hand tool which has a bo-socet wrench on one end and an obined center-rabines the functions of an ARTCC and a radar abustibles Materials that are cabustion A chemical reaction in which a material, called the fuel, combines with oygen so rabustion heater A tybustion liner gas turbine engine combustion chamber of a gas turbine engineCombustion air and cooling air both flow through the combustion liner, and fuel is sbustion liner can be removed from the engine for insbustor gas turbine engine combustion ebustor and directs it out through the turbineThere are a number of tybustors, but all have an outer liner and a thin-wall bustion taes bustion bustor to eebustion chambers or burnerscombustor drain valve gas turbine engine combustor outer case to drain fuel from the combustor after an aborted startThe combustor drain valve is sbustor efficiency gas turbine engine The ratio of the amount of heat energy released by burning the fuel in a gas turbine engine to the amount of heat energy in the fuelcomfort one The range of teming-in sing-in smercial aircraft omerce of mercial mon-base ammon-collector ammon-emitter ammon fraction mathematics A fraction written in the form of one number aboveanother The number on the bottom is the denominator, indicating the number of mon mon mon traffic advisory frequency See CTAFcommunications electronic The branch of science or technology that changes information into electrical immunications receiver A radio receiver designed and built munications satellite A man-made satellite that orbits the earth at an altitude of 22,300 miles 35,900 ilometers, amutation electrical machine The mutator electrical machine commutator, bination of the earth’s magnetic field and local magnetic fields These local fields are caused by magnetied bined in such a way that the characteristics of the resulting material are different from those of any of the combination of half the lateral minimum sbine high strength and rigidity with light weightcomes ecessive and the smooth airflow through the common e saturated if it were lifted adiabatically —lifted with heat neither added to it nor taen from itcondensation nuclei meteorology Small es saturated Unstable air rises because it is warmer than the air surrounding itcondition lever turbomunication with ATC by ensuring that radar targets do not toucha freely flowing liquid into a liquid too viscous, or stiff, to flowcongealed oil Oil that has become too viscous, or thic, to flow because of its low temes from a conifer, or cone-bearing treeconing angle helicomonly nown by the Gree letter es charged, its voltage rises and the charging current decreases When the battery voltage is the same asthe voltage of the charging source, no more charging current flows Aircraft generators charge the batteries with a constant-voltage chargeconstant-voltage bustion liner, so they run cooler than annular-gamand The term used between a mended minimum friction level, and the average friction valuein the adjacent 500-foot segment falls below the maintenance es a conductor when heated When a fire occurs, the thermistor conducts electricity and command center ground delay factorcontrol locing device aircraft control system A device used to loc the flight-control surfaces of an aircraft in their neutral es saturated, smonly used, is the tricycle landing gear The two main wheels are behind the center of gravity, and the auiliary wheel sues divergent Convergent-divergent ducts are called CD ducts, or in the United Kingdom, con-di ducts convergent-divergent ehaust duct gas turbine engine ehaust duct An ehaust duct used on the engine of a sues smaller in the direction of the airflow The air entering the duct at a sues divergent The air, now traveling slower than the se from trees grown in the East Indies, South America, and Africa Comand of the aircraftcobination used to measure tembustors, the turbine nole, and the stages of the turbine used to drive the comes from outer smands from on-board navigation equie accebination is ecited Continued obustor Crossover tubes carry flame from one can to the other when the engine is being startedcross-sectional view mechanical drawing An auiliary view of an aircraft drawing used to show the cross-sectional shamonly used cryogenic liquids cryogenics The branch of science or engineering that deals with technical omon traffic advisory frequency A frequency designated for the es ecessive Other current limiters reduce the generator outbustion chambers of the enginecylinder geometric shabustion chamber Most modern recibustion heater combustion heater if a fire or over-temes to rest without overshooting its at-rest mercial aircraft in which no cargo or e less with time See dame from deciduous treesdecimal digit Any of the Arabic numerals 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9decimal fraction A mon usage in technology to mean a change in something A small change is indicated by the lower-case letter delta δ, and a larger change is shown by the use of a triangle, the ues from the symbol for this tymunications To remove the modulation from a telecommunicated signalWhen communications, it is changed into audible tones, or modulated, so it will mon fraction below the line The denominator shows the number of mon fraction 9/16, the denominator is16 The whole unit is divided into 16 equal mon e higher than the critical monly used by aircraft maintenance technicians The short, strong jaws are ground so they cut the wire by a chiseling action, rather than by shearingdiagram A line drawing used to ree incandescent and ignite the fuel-air miture in the cylinder and eebineddrag causing the nose of the aire the induced drag caused by the down aileron See adverse yaw differential amplification of the difference between the signals on the two inputs。
抽水蓄能专业英语词汇
自动化元件 自动励磁电流调节器 自动励磁调节系统 语音电话自动告警系统 自动识别 自动准同步装置
（AVR）automatic thermostatic heater
atic voltage regulator
automatic water spray system
automatically
autonomous
氩弧焊方式
argon arc electrical
氩弧
arm
支臂
arm fabricated type
支臂组合式
armature
电枢
armored layer
铠装层
array of
一批
arrestor art design artesian artesian artificial
as pertains to asbestos asbestos product as-built ascertain aspire assembling stress assembly assignment assume assumption asymmetrical fault asymmetrical short circuit asymmetry
黄铜 (定向)(予警)爆炸 一定 提货单
巴氏合金 背靠背起动方式 缓冲板
balance weight balancing weight balustrade balustrade balustrade banking fire
平衡重锤
平衡重锤/配重
栏栅
护栏 拉杆
barracks
压火
营房 barrier
自动负载调节器 赞助 领导
自动告警系统 自动双相自平衡跟踪装置
格力新品亮相第32届中国制冷展,核心科技赋能绿色未来
参考文献：[1]谢福寿, 雷刚, 王磊, 等. 过冷低温推进剂的性能优势及其应用前景[J]. 西安交通大学学报, 2015, 49(5): 16-23.[2]KUTTER B, ZEGLER F, LUCAS S, et al. Atlas centaurextensibility to long-duration in-space applications[R].California: American Institute for Aeronautics and Astronautics, 2005.[3]符全军. 液体推进剂的现状及未来发展趋势[J]. 火箭推进, 2004(1): 4-9.[4]谢福寿, 雷刚, 王磊, 等. 过冷低温推进剂的性能优势及其应用前景[J]. 西安交通大学学报, 2015(5): 22-29. [5]候增祺, 胡金刚. 航天器热控制技术原理及其应用[M].北京: 中国科学技术出版社, 2007.[6]李亚裕. 空间环境对液体推进剂的影响[J]. 导弹与航天运载技术, 1999(1): 20-27.[7]SORENSE N, BASSETT R, SORENSEN G, et al. Azero-gravity thermodynamic vent system for the shuttle/centaur hydrogen tank[R]. United States: SAE International, 1984.[8]FLACHBART R, HASTINGS L, MARTIN J. Testing of aspray bar zero gravity cryogenic vent system for upper stages[C]// The 35th Joint Propulsion Conference and Exhibit. Los Angeles, California: American Institute for Aeronautics and Astronautics, 1999.[9]陈忠灿, 秦旭进, 李鹏, 等. 充注率及压力控制带对热力排气系统性能的影响[J]. 制冷技术, 2018, 38(3): 1-7.[10]鲍团卫, 刘业凤, 蔡操平. 以毛细管为节流装置的CO2小型热泵热水器实验研究[J]. 制冷技术, 2011, 31(2):25-28.[11]LIANG S M, WONG T N. Numerical modeling of twophase refrigerant flow through adiabatic capillary tubes[J].Applied Thermal Engineering, 2001, 21(10): 1035-1048. [12]马跃学, 王娟, 刘彦杰, 等. 空间预冷型J-T节流制冷机热力学流程优化研究[J]. 工程热物理学报, 2016,37(11): 2282-2287.[13]戴国民, 杜垲. 空调器毛细管长度与制冷剂充注量匹配实验研究[J]. 制冷技术, 2001, 21(4): 38-40.[14]MELO C, FERREIRA R T S, NETO C B, et al. Anexperimental analysis of adiabatic capillary tubes[J].Applied thermal engineering, 1999, 19(6): 669-684. [15]LIN M H, BRADLEY P E, HUBER M L, et al. Mixedrefrigerants for a glass capillary micro cryogenic cooler[J].Cryogenics, 2010, 50(8): 439-442.[16]王如竹. 制冷技术中的真空测量问题[J]. 制冷技术,1995, 15(3): 31-32.[17]闫畅迪, 黄永华, 喻志广, 等. 带芯波纹管内液氮流动压降特性的实验研究[J]. 制冷技术, 2016, 36(3): 1-5. [18]赵东方. 液氮文氏管汽蚀动态特性可视化实验研究[D].杭州: 浙江大学, 2016.[19]STAHL H A, STEPHANOFF A J. Thermodynamic aspectsof cavitation in centrifugal pumps[J]. ASME Journal of Basic Engineering, 1956, 78: 1691-1693.[20]LONG X, ZHANG J, WANG J, et al. Experimentalinvestigation of the global cavitation dynamic behavior ina venturi tube with special emphasis on the cavity lengthvariation[J]. International Journal of Multiphase Flow, 2017, 89: 290-298.※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※格力新品亮相第32届中国制冷展，核心科技赋能绿色未来4月7日，格力电器携暖通空调、冷冻冷藏和智能家居等多领域的自主创新成果亮相展会，并举行了10 kV高压直驱永磁同步变频离心式冷水机新品发布会、冷冻冷藏新品发布会暨新年度招商活动和第5届“金叶轮”暖通空调设计大赛启动仪式。
SPX APV卫生离心泵
Sanitary Centrifugal PumpsW+ series2W+ - Advanced Design for Performance and ReliabilitySPX is a leading innovator of solutions with decades of experience in centrifugal pump design, covering premium brands such as APV and Waukesha Cherry-Burrell. From the supply of engineered components to complete process engineering and design, we specialise in helping our customers improve their plant’s performance and profitability. Y ears of intensive product development on a worldwide scale, has enabled SPX to offer a complete range of hygienic pumps in the brewery, dairy, food, beverage, chemical, health care and pharmaceutical industries.Features and Benefits of the W+ Pump:Reliable and heavy duty design • Energy efficient• Quiet performance with minimal vibration • Superior shaft seal design • High pressure capability• 3A and EHEDG (European Hygienic Engineering & Design Group) certified.• Designed for CIP (Cleaning In Place) as well as SIP (Sterilizing In Place)• Suitable for wide variety of food, beverage and pharmaceutical products • Wide range of optional features available • Easy and cost effective maintenance•3Impeller Stationary seal face Shaft SpringDesigned for EfficiencyThe W+ pump series is based on a unique hydraulic design that ensures maximum efficiency, allows for highest hygienic standards and reduces noise and vibration.Item 1•- Unique APV spiral volute positioned in the backplate of the pump ensures a direct transfer of liquid from inlet to outletItem 2• - Advanced, high efficiency impeller design Item 3•- Extended outlets smooth transition to process piping while reducing turbulence and preventing product build-upItem 4•- Heavy walled pump casing insures that efficiency levels are maintained even at high pressureSpecial Shaft Designed for Hygienic Applications:The shaft seal is the essential area in terms of hygiene. The pumps are equipped with a shaft seal that is ideal for hygienic applications.Seal Advantages:Internal seal design optimizes cooling and lubrication of seal •surfaces while the seal chamber is built to efficiently dissipate heat. Both work to reduce risk of "dry-running" Directed flow assures thorough cleaning of seal area • The stationary spring is located outside the product contact • area to maintain cleanliness Two sizes cover all models• Front loading seal simplifies maintenance: only the pump •housing and impeller have to be disassembled, then the shaft seal can be replaced quickly from the frontCan easily be rebuilt into a double mechanical shaft seal for •use with water flushing or with a barrier medium for aseptic applicationsDouble mechanical is mirror image of single: same seal faces •and O-ringsDouble mechanical seal prepared for flushing or a steam barrierItem 1Item 4Item 2Item 3Pump Specifications4A comprehensive rangeThe W+ range consists of 16 standard models with pressure and flow capacities to 217 psi (15 bar) and to 1,760 gpm (400 m3/hr), and a number of special versions which may be specifically adapted to customer requirements. The W+ pumps are modular so that any pumping job can be done with a perfectly customized W+ pump.Variants of the W+Wi+ Inducer PumpThe inducer pump is the alternative to changing the process design when NPSH availability is low.The inducer boosts the inlet pressure, and the risk of cavitation is correspondingly reduced (the NPSHrequired typically drops by 50-70%). When the risk of cavitation disappears, so does the risk of a largenumber of operational disturbances that would otherwise result - such as excessive noise, energy loss,product damage and unnecessary wear on the pump. Low suction head is a common “problem” inmiscellaneous applications, e.g. when pumping products with low boiling points or in processes thatinvolve vacuums.The Wi+ is unique among inducer pumps, since the NPSH requirement is kept to a minimum throughout its entire operating range. The inducer further enables the Wi+ pump to handle viscous or gaseous products beyond the range of other centrifugal pumps.Ws+ Self-Priming PumpThe self-priming Ws+ is designed to handle CIP return and other fluids with entrained air and foam. Theunique design reduces the energy consumption and noise of traditional liquid ring pumps by using a highefficiency impeller that can be trimmed to match a specific duty. The Ws+ employs a built in eccentric airscrew to form the liquid ring required for its self-priming capability.Features and Benefits•20-90% more efficient than other liquid rings due to improved fluid flow through pump.•Performance optimized by matching impeller size to duty.•Low noise level: Due to its hydraulic design the noise level of the Ws+ is significantly lower than traditional liquid ring pumps.•3A and EHEDG approved.•Interchangeable with W+ parts. Inventory is reduced by sharing common parts.Less prone to damage. Small objects can pass through pump with minimal damage.•67The W+140/50 offers three special features: Provides differential pressures up to 700 ft (15 bar)• Can be used in processes with system pressures up to 870 psi (60 bar)• Ensures optimum hygienic standards•And unlike other multistage pumps, it is CIP friendly. It has an open and semi-open impeller, eliminating any hiding place for bac-teria. The W+ multistage pump is equipped with a heavy-duty bearing bracket that absorbs all radial and axial forces present in pumps of this kind. Therefore, the W+140/50 can use standard motors.Aseptic fittingWhp+ High Pressure PumpWa+ Aseptic PumpW+ for pharmaceutical applications like WFI and HPWW+ Multistage PumpPump with double seal barrier fluid at all connectionsThe Whp+ is a high-pressure model of the W+ range. The pumps are designed to withstand systempressures up to 870 psi (60 bar) — such as those in certain reverse osmosis systems. The Whp+ pump’s sturdy construction increases stability and dampens vibrations.Environmental requirements are getting stricter and stricter! But today, aseptic production is already essential to certain processes — including the manufacture of long life food and pharmaceutical products. The Wa+ pump is the perfect solution. All seals, including the shaft seal, are designed as double seals. Double mechanical shaft seals fitted for sterile flushing • Double O-ring sealing of pump housing fitted for sterile flushing • Special aseptic fittings fitted for sterile flushing•So, Wa+ pumps products ensure absolutely aseptic production processes with barrier media up to 320ºF (150ºC). With a Wa+ pump, the risk ofcontaminating the product and environment is thus reduced to an absolute minimum.W+ pumps are also available in a pharmaceutical design where product contact parts (Impeller, impeller nut and back plate) are machined from solid 316L SS and electro polished. The deep-drawn, low ferrite casing is polished to 20 Ra contact surface finish and electro polished. Other optional features are casing drain, multiple outlet positions and certifications of materials and surface finish.Y our local contact:SPX Flow Technology611 Sugar Creek RoadDelavan, WI 53115Phone: (262)728-1900 or (888)278-4321 Fax: (262)728-4904 or (800)252-5045E-mail: @For more information about our worldwide locations, approvals, certifications, and local representatives, please visit .SPX Corporation reserves the right to incorporate our latest design and material changes without notice or obligation.Design features, materials of construction and dimensional data, as described in this bulletin, are provided for your information only and should not be relied upon unless confirmed in writing. Issued: 06/2010 7016-01-04-2010-US Copyright © 2010 SPX Corporation。
液压阀口气穴_振动与噪声研究_邹俊
图 2 实验用阀芯（U 型阀口）
图 1 所示为实验液压系统，通过比例溢流阀调 节测试阀进口压力，通过手动节流阀调节测试阀出 口压力。测试阀体材料为透明有机玻璃（聚甲基丙 烯酸甲脂，PMMA），阀口观测采用日本 Photran 公 司生产的高速摄像设备（FASTCAM-ultima APX， 最高速度 12 万帧每秒），振动和噪声信号的采集， 通过 B&K 加速度传感器和 AWA6270 噪声频谱仪同 步获取。
图 6 给出了出口压力分别为 0.3,0.4,0.5,0.6Mpa 时的振动频谱，其中，频率 a1，a2，a3，a4 近似相等。 可见，无论出口压力如何变化，振动主频基本保持 一致。振动主频能量随出口压力降低（气穴加剧） 而有所增加的，这与我们目前的认知是吻合的。而 当出口压力为 0.5Mpa 时，主频能量甚至超过了出口 压力更小，气穴发育更为严重的情形，噪声量级也
[3] J. Kiesbauer and D. Vnucec, Prediction cavitation damage in control valves[J]. Hydrocarbon Process. 2006, 33(85): 55–61
[4] D. B. Hans and W. P. George, A method to predict sound levels from hydrodynamic sources associated with flow through throttling valves[J]. Noise Control Eng., 1995, 43(5): 145–158
图 2 为实验测试所采用的 U 型阀口，阀口呈马 蹄形，具有一定深度。
2 U型阀口气穴形态
脱落泡群
7粉末涂料方面的术语(双语对照)
粉末涂料术语双语对照Abrasive研磨剂A course material used in blast cleaning,such a s sand,steel shot,glass beads or plastics.用于喷抛清理一种流动材料，例如砂子、钢丸、玻璃珠或塑胶制品。
Absorption吸收Process of soaking up or assimilation of one su bstance by another.一种介质向另一种介质渗透和同化的过程。
AC(Current)交流电Current Alternating electrical current.电流交互变得的电流。
Accelerator促进剂Material that accelerates the curing or crosslinkin g,a mixture of crosslinkers or resins.Catalyst.加速固化或交联的一种材料，可以混合在交联剂或树脂中，起催化作用。
Acicular Pigments针状颜料Pigments whose particles are needle shaped.粒径形状似针状的一种颜料。
Acrylic丙烯酸型A coating powder with a significant content of a polymer containing short chain esters of various acrylic monomers.一种粉末涂料类型，该类型中有效的树脂体系为短链的不同丙烯酸单体的酯类聚合物。
Acrylic Resin丙烯酸树脂A clear resin derived from polymerised esters of various acrylic monomers.Acrylics are used for automotive topcoats and in other applications w here resistance to chalking with exposure to sun light is important一种由不同丙烯酸单体聚合的透明的酯类树脂，丙烯酸树脂同在汽车顶涂或其他的场合在阳光曝晒下具有非常高的耐粉化性能。
汽蚀比转速美标单位
汽蚀比转速美标单位英文回答：Cavitation is a common phenomenon in fluid dynamics, particularly in the field of hydraulic engineering. It occurs when the pressure of a fluid drops below its vapor pressure, causing the formation of vapor bubbles. These bubbles then collapse or implode when they move to a region of higher pressure, resulting in a localized shock wave and the release of energy.Cavitation can cause significant damage to hydraulic equipment, such as pumps, turbines, and propellers. One important parameter used to assess the susceptibility of a system to cavitation is the cavitation factor, also known as the cavitation index or the cavitation number. In the United States, the cavitation factor is commonly expressed in terms of the NPSH (Net Positive Suction Head) required for a pump to operate without cavitation.The NPSH is a measure of the pressure head available at the suction side of a pump, taking into account the vapor pressure of the fluid. It is usually expressed in units of length, such as feet or meters. The NPSH required for a pump to avoid cavitation depends on various factors, including the pump design, the fluid properties, and the operating conditions.For example, let's say I have a centrifugal pump thatis used to transfer water from a reservoir to a higher elevation. The pump has a specific speed of 1500 rpm, and the fluid temperature is 25°C. I want to determine the NPSH required for the pump to avoid cavitation.First, I need to know the vapor pressure of water at 25°C. From the steam tables, I find that the vapor pressure of water at this temperature is approximately 3.17 kPa. Next, I need to calculate the NPSH required using the pump's performance curve and the specific speed.Assuming the pump has a performance curve that provides the head and flow rate at various NPSH values, I can plotthe curve and find the NPSH required for the desired flow rate. Let's say I want the pump to deliver 1000 gallons per minute (gpm) at a head of 100 feet. By interpolating on the performance curve, I find that the NPSH required is 10 feet.Therefore, in this example, the NPSH required for the pump to avoid cavitation is 10 feet. If the available NPSHat the pump's suction side is less than this value, cavitation is likely to occur, leading to reduced pump performance and potential damage.中文回答：汽蚀是流体力学中常见的现象，尤其在液压工程领域中。
叶轮机械三元流动通用原理
叶轮机械三元流动通用原理The principles of the three-element flow in centrifugal machinery are essential to understand in the field of mechanical engineering. 叶轮机械三元流动原理是机械工程领域中必须理解的基本原理之一。
This concept involves the study of the interactions between the flow of fluid, the rotation of the impeller, and the resulting pressure and velocity changes within the centrifugal pump. 这个概念涉及了流体流动、叶轮的旋转以及离心泵内因此产生的压力和速度变化之间的相互作用。
With a deep understanding of these principles, engineers can design and optimize centrifugal machinery for various applications. 有了对这些原理的深刻理解，工程师可以设计和优化适用于各种应用的离心机械。
One of the fundamental aspects of the three-element flow in centrifugal machinery is the study of fluid dynamics. 叶轮机械三元流动的一个基本方面就是流体动力学的研究。
It involves the analysis of how fluids behave in motion, including the principles of conservation of mass, momentum, and energy. 它涉及流体在运动中的行为分析，包括质量、动量和能量守恒原理。
轮机英语2016一月
1.In the cooling system, a general build-up of deposits resulting a loss of thermalefficiency and leads in turn to ___________A.broken problemsB.overcooling problemsC interrupted problems D.overheating problems2. A semiconductor is a material with a ____.A. conductivity higher than a normal conductorB. conductivity higher than a normal insulatorC. high conductivity at low temperaturesD. low conductivity at high temperatures注：semiconductor半导体，conductivity导电性能；半导体的导电性能介于导体和绝缘体之间；故选B。
3. Increased internal leakage, in addition to poor hydraulic system response, and inadequate lubrication, is the result of ___ .A. pump bearings in poor conditionB. excessively worn actuator-piston packingC. broken directional control valve centering springs.D. low hydraulic oil viscosity注：液压系统反应傻、润滑不良，而且内部泄漏大，往往是由于液压油的粘度低引起，故选D。
变频给水泵小流量并联运行发生汽蚀的分析
变频给水泵小流量并联运行发生汽蚀的分析解海龙;李海强;刘袖;房子俊【摘要】The parallel operation of converter pump and general pump on header feed-water system which is used in a power plant in Baicheng Jilin,cavitations occurred in converter pump. Generally,cavitations occurred only in first-stage of multi-stage centrifugal pump,but the cavitations occurred in secondary stages of the con-verter pump. The pressure in the secondary stages is much higher than the vapor pressure. For this reason,from the point of view of pressure reduce we c an’ t explain why cavitations occurred. When the adjustment range is too large,then the pump output only a small flow or even no flow. To address this situation,a CFD software Flu-ent has been developed to simulate the three dimensional flow field inside convert pump in this article. When the pump runs in a small flow,it simulated the velocity distribution of the convert pump and research whether swirls exists in the flow channel of the pump. It researched velocity changes of the flow and the swirl distribu-tion in the impellor. Then study the distribution of the cavitations which were caused by swirl.%白城市某电厂母管制给水系统并联运行的给水泵，其中一台变频泵运行时发生了汽蚀。
水轮机和水力发电文献翻译(Word最新版)
水轮机和水力发电文献翻译通过整理的水轮机和水力发电文献翻译相关文档，渴望对大家有所扶植，感谢观看！中文3840字外文文献：hydraulicturbines and hydro-electric power Abstract Power may be developed from water by three fundamental processes : by action of its weight, of its pressure, or of its velocity, or by a combination of any or all three. In modern practice the Pelton or impulse wheel is the only type which obtains power by a single process the action of one or more high-velocity jets. This type of wheel is usually found in high-head developments. Faraday had shown that when a coil is rotated in a magnetic field electricity is generated. Thus, in order to produce electrical energy, it is necessary that we should produce mechanical energy, which can be used to rotate the ‘coil’. The mechanical energy is produced by running a prime mover (known as turbine ) by the energy of fuels or flowing water. This mechanical power is converted into electrical power by electric generator which is directly coupled to the shaft of turbine and is thus run by turbine. The electrical power, which is consequently obtained at the terminals of the generator, is then transited to the area where it is to be used for doing work.he plant ormachinery which is required to produce electricity (i.e. prime mover +electric generator) is collectively known as power plant. The building, in which the entire machinery along with other auxiliary units is installed, is known as power house. Keywords hydraulic turbines hydro-electric power classification of hydel plants head scheme There has been practically no increase in the efficiency of hydraulic turbines since about 1925, when maximum efficiencies reached 93% or more. As far as maximum efficiency is concerned, the hydraulic turbine has about reached the practicable limit of development. Nevertheless, in recent years, there has been a rapid and marked increase in the physical size and horsepower capacity of individual units. In addition, there has been considerable research into the cause and prevention of cavitation, which allows the advantages of higher specific speeds to be obtained at higher heads than formerly were considered advisable. The net effect of this progress with larger units, higher specific speed, and simplification and improvements in design has been to retain for the hydraulic turbine the important place which it has long held at one of the most important prime movers. 1. types of hydraulic turbines Hydraulic turbines may be grouped in two general classes: the impulse type which utilizes the kinetic energy of a high-velocity jet which acts upon only a small partof the circumference at any instant, and the reaction type which develops power from the combined action of pressure and velocity of the water that completely fills the runner and water passages. The reaction group is divided into two general types: the Francis, sometimes called the reaction type, and the propeller type. The propeller class is also further subdivided into the fixed-blade propeller type, and the adjustable-blade type of which the Kaplan is representative. 1.1 impulse wheels With the impulse wheel the potential energy of the water in the penstock is transformed into kinetic energy in a jet issuing from the orifice of a nozzle. This jet discharge freely into the atmosphere inside the wheel housing and strikes against the bowl-shaped buckets of the runner. At each revolution the bucket enters, passes through, and passes out of the jet, during which time it receives the full impact force of the jet. This produces a rapid hammer blow upon the bucket. At the same time the bucket is subjected to the centrifugal force tending to separate the bucket from its disk. On account of the stresses so produced and also the scouring effects of the water flowing over the working surface of the bowl, material of high quality of resistance against hydraulic wear and fatigue is required. Only for very low heads can cast iron be employed. Bronze and annealed cast steel are normallyused. 1.2 Francis runners With the Francis type the water enters from a casing or flume with a relatively low velocity, passes through guide vanes or gates located around the circumstance, and flows through the runner, from which it discharges into a draft tube sealed below the tail-water level. All the runner passages are completely filled with water, which acts upon the whole circumference of the runner. Only a portion of the power is derived from the dynamic action due to the velocity of the water, a large part of the power being obtained from the difference in pressure acting on the front and back of the runner buckets. The draft tube allows maximum utilization of the available head, both because of the suction created below the runner by the vertical column of water and because the outlet of he draft tube is larger than the throat just below the runner, thus utilizing a part of the kinetic energy of the water leaving the runner blades. 1.3 propeller runners nherently suitable for low-head developments, the propeller-type unit has effected marked economics within the range of head to which it is adapted. The higher speed of this type of turbine results in a lower-cost generator and somewhat smaller powerhouse substructure and superstructure. Propeller-type runners for low heads and small outputs are sometimes constructed of cast iron. For heads above 20 ft, they are made of cast steel, a much morereliable material. Large-diameter propellers may have individual blades fastened to the hub. 1.4 adjustable-blade runners The adjustable-blade propeller type is a development from the fixed-blade propeller wheel. One of the best-known units of this type is the Kaplan unit, in which the blades may be rotated to the most efficient angle by a hydraulic servomotor. A cam on the governor is used to cause the blade angle to change with the gate position so that high efficiency is always obtained at almost any percentage of full load. By reason of its high efficiency at all gate openings, the adjustable-blade propeller-type unit is particularly applicable to low-head developments where conditions are such that the units must be operated at varying load and varying head. Capital cost and maintenance for such units are necessarily higher than for fixed-blade propeller-type units operated at the point of maximum efficiency. 2. thermal and hydropower As stated earlier, the turbine blades can be made to run by the energy of fuels or flowing water. When fuel is used to produce steam for running the steam turbine, then the power generated is known as thermal power. The fuel which is to be used for generating steam may either be an ordinary fuel such as coal, fuel oil, etc., or atomic fuel or nuclear fuel. Coal is simply burnt to produce steam from water and is the simplest and oldesttype of fuel. Diesel oil, etc. may also be used as fuels for producing steam. Atomic fuels such as uranium or thorium may also be used to produce steam. When conventional type of fuels such s coal, oil, etc. (called fossils ) is used to produce steam for running the turbines, the power house is generally called an Ordinary thermal power station or Thermal power station. But when atomic fuel is used to produce steam, the power station, which is essentially a thermal power station, is called an atomic power station or nuclear power station. In an ordinary thermal power station, steam is produced in a water boiler, while in the atomic power station; the boiler is replaced y a nuclear reactor and steam generator for raising steam. The electric power generated in both these cases is known as thermal power and the scheme is called thermal power scheme. But, when the energy of the flowing water is used to run the turbines, then the electricity generated is called hydroelectric power. This scheme is known as hydro scheme, and the power house is known as hydel power station or hydroelectric power station. In a hydro scheme, a certain quantity of water at a certain potential head is essentially made to flow through the turbines. The head causing flow runs the turbine blades, and thus producing electricity from the generator coupled to turbine. In this chapter, we are concerned with hydel scheme only.3.classification of hydel plants Hydro-plants may be classified on the basis of hydraulic characteristics as follow: ① run-off river plants .②storage plants.③pumped storage plants.④tidal plants. th ey are described below. (1) Run-off river plants. These plants are those which utilize the minimum flow in a river having no appreciable pondage on its upstream side. A weir or a barrage is sometimes constructed across a river simply to raise and maintain the water level at a pre-determined level within narrow limits of fluctuations, either solely for the power plants or for some other purpose where the power plant may be incidental. Such a scheme is essentially a low head scheme and may be suitable only on a perennial river having sufficient dry weather flow of such a magnitude as to make the development worthwhile. Run-off river plants generally have a very limited storage capacity, and can use water only when it comes. This small storage capacity is provided for meeting the hourly fluctuations of load. When the available discharge at site is more than the demand (during off-peak hours ) the excess water is temporarily stored in the pond on the upstream side of the barrage, which is then utilized during the peak hours. he various examples of run-off the river pant are: Ganguwal and Kolta power houses located on Nangal Hydel Channel, Mohammad Pur and Pathri power houses on GangaCanal and Sarda power house on Sarda Canal. The various stations constructed on irrigation channels at the sites of falls, also fall under this category of plants. (2) Storage plants A storage plant is essentially having an upstream storage reservoir of sufficient size so as to permit, sufficient carryover storage from the monsoon season to the dry summer season, and thus to develop a firm flow substantially more than minimum natural flow. In this scheme, a dam is constructed across the river and the power house may be located at the foot of the dam such as in Bhakra, Hirakud, Rihand projects etc. the power house may sometimes be located much away from the dam (on the downstream side). In such a case, the power house is located at the end of tunnels which carry water from the reservoir. The tunnels are connected to the power house machines by means of pressure pen-stocks which may either be underground (as in Mainthon and Koyna projects) or may be kept exposed (as in Kundah project). When the power house is located near the dam, as is generally done in the low head installations ; it is known as concentrated fall hydroelectric development. But when the water is carried to the power house at a considerable distance from the dam through a canal, tunnel, or pen-stock; it is known as a divided fall development. (3) Pumped storage plants. A pumped storage plantgenerates power during peak hours, but during the off-peak hours, water is pumped back from the tail water pool to the headwater pool for future use. The pumps are run by some secondary power from some other plant in the system. The plant is thus primarily meant for assisting an existing thermal plant or some other hydel plant. During peak hours, the water flows from the reservoir to the turbine and electricity is generated. During off-peak hours, the excess power is available from some other plant, and is utilized for pumping water from the tail pool to the head pool, this minor plant thus supplements the power of another major plant. In such a scheme, the same water is utilized again and again and no water is wasted. For heads varying between 15m to 90m, reservoir pump turbines have been devised, which can function both as a turbine as well as a pump. Such reversible turbines can work at relatively high efficiencies and can help in reducing the cost of such a plant. Similarly, the same electrical machine can be used both as a generator as well as a motor by reversing the poles. The provision of such a scheme helps considerably in improving the load factor of the power system. (4) Tidal plants Tidal plants for generation of electric power are the recent and modern advancements, and essentially work on the principle that there is a rise in seawater during high tide period and afall during the low ebb period. The water rises and falls twice a day; each fall cycle occupying about 12 hours and 25 minutes. The advantage of this rise and fall of water is taken in a tidal plant. In other words, the tidal range, i.e. the difference between high and low tide levels is utilized to generate power. This is accomplished by constructing a basin separated from the ocean by a partition wall and installing turbines in opening through this wall. Water passes from the ocean to the basin during high tides, and thus running the turbines and generating electric power. During low tide，the water from the basin runs back to ocean, which can also be utilized to generate electric power, provided special turbines which can generate power for either direction of flow are installed. Such plants are useful at places where tidal range is high. Rance power station in France is an example of this type of power station. The tidal range at this place is of the order of 11 meters. This power house contains 9 units of 38,000 kW. 4.Hydro-plants or hydroelectric schemes may be classified on the basis of operating head on turbines as f ollows: ① low head scheme (head<15m),②medium head scheme (head varies between 15m to 60 m) ,③high head scheme (head>60m). They are described below: (1) Low head scheme. A low head scheme is one which uses water head of less than 15 meters or so. A run offriver plant is essentially a low head scheme, a weir or a barrage is constructed to raise the water level, and the power house is constructed either in continuation with the barrage or at some distance downstream of the barrage, where water is taken to the power house through an intake canal. (2) Medium head scheme A medium head scheme is one which used water head varying between 15 to 60 meters or so. This scheme is thus essentially a dam reservoir scheme, although the dam height is mediocre. This scheme is having features somewhere between low had scheme and high head scheme.(3) High head scheme. A high head scheme is one which uses water head of more than 60m or so. A dam of sufficient height is, therefore, required to be constructed, so as to store water on the upstream side and to utilize this water throughout the year. High head schemes up to heights of 1,800 meters have been developed. The common examples of such a scheme are: Bhakra dam in (Punjab), Rihand dam in (U.P.), and Hoover dam in (U.S.A), etc. The naturally available high falls can also be developed for generating electric power. The common examples of such power developments are: Jog Falls in India, and Niagara Falls in U.S.A. 水轮机和水力发电摘要水的能量可以通过三种基本方法来获得：利用水的重力作用、水的压力作用或水的流速作用，或者其中随意两种或全部三种作用的组合。
离心泵非设计工况空化振动噪声的试验测试_王勇
图 3 加速度传感器安放位置 Fig.3 Mounting for acceleration sensors
2
结果及分析
2.1 空化特性曲线 试验时首先打开模型泵进口管路上的蝶阀，关闭模 型泵出口碟阀，因为离心泵零流量时功率最小，所以关 阀启动离心泵。泵启动后调节泵出口碟阀，使泵运行工 况分别为流量 Q=35、45、50、60、65 m3/h，待模型泵运 行稳定后，启动真空泵，降低汽蚀筒内压力，逐渐减少 装置空化余量（net positive suction head，NPSH），每次 降低 5～10 kPa。每个工况下均保证整个试验过程中模型 泵的运行流量始终保持不变。对于各个流量下不同的 NPSH，分别应用泵产品测试系统和虚拟仪器动态信号采 集模板同步采集模型泵的性能参数和振动噪声信号。 图4 为模型泵不同流量下的空化性能曲线。
从图 4 中可以看出，当 NPSH 较大时，泵内无空化 产生， 泵的能量特性不受影响， 扬程保持不变； 随着 NPSH 的逐步降低，泵内的空化程度将逐步恶化，导致泵的扬 程下降。随着流量的增加泵的扬程依次减小，空化性能 逐渐变差。 2.2 振动特性分析 取振动加速度信号的均方根值 T 来表征振动加速度 的平均能量，则均方根值 T 的表达式为
表1模型泵的几何参数table1geometricparametersofmodelpump叶片数枚叶轮进口直径mm叶轮出口直径mm叶片出口宽度mm叶片出口角蜗壳基圆直径mm蜗壳进口宽度mm571168103318420图2模型泵叶轮水力图fig2hydraulicdiagramofimpellerformodelpump水听器采用齐平式安装方式将水听器直接安装在管壁上使其探头与测压点周围的壁面处于齐平的状态直接测量管内的噪声15
泵类英汉翻译
发一份泵类汉英对照表,请进入!汉语术语英文凹槽 groove饱和压力 Saturation Pressure保持环 retaining ring保护层的形成 Protective Layer Formation保护形式 Types of Protection保证 Guarantee背靠背叶轮泵 Back-to-back Impeller Pump背叶片 Back Vane泵 pump泵测试效率 pump test efficiency泵出力 pump delivery泵的基础 Pump Foundation泵的类型 Pump Types泵的排出口 Pump Discharge Nozzle泵的使用范围 Application Fields for Pumps泵的输出功率 Pump Output泵的旋转方向 Direction of Pump Rotation泵房 pump house(room)泵功率 Pump Power泵和输送装置噪音 Noises in Pumps and Pumping Installations 泵壳 Pump Casings泵内沉积物 Deposits in Pumps泵试验台 Pump Test Bed泵输出功率的降低 Reduction in Pump Output泵输入功率 pump input power泵体 pump casing泵吸入槽 Pump Sump泵吸入管吸上高度 pump lift泵吸入口 Pump Suction Nozzle泵效率 pump efficiency泵效率 Pump Efficiency泵芯包 pump cartridge泵性能曲线 pump performance curve泵站 pumping house泵轴 Pump Shaft比例泵 proportioning pump比输送功 Specific Delivery Work比转数 Specific Speed边界层 Boundary Layer变矩桨叶 Variable Pitch Blade标准泵 Standard Pump标准化工泵 Standard Chemical Pump标准孔板 Standard Orifice Plate标准喷嘴 Standard Nozzle标准温度 Standard Temperature标准文丘里管 Standard Venturi Nozzle标准压力 Standard Pressure标准状态 Standard Conditions表面保护 Surface Protection表压 Manometric Pressure并联运转 Parallel Operation伯努利方程 BERNOULLI Equation补偿器 Compensator补给水泵 make-up water pump部分负荷运转 Part-load Operation残油输出装置 Residual Pump-out Device槽 slot测量的不精确性 Uncertainty in Measurement 测量技术 Measuring Technique测量孔板 Measuring Orifice Plate测量偏差 Measuring Tolerance测量误差 Error of Measurement测量仪器 Measuring Device测试转速 test speed层流 Laminar Flow齿轮泵 gear pump齿轮传动泵 Geared Pump齿轮箱 Gearbox冲击冷凝 Shock Condensation冲击压力 Impact Pressure冲角 Angle of Incidence抽出体积 Extraction Volume抽气（吸）泵；真空泵 suction pump出口侧盖板（大端盖） discharge cover出口截面 Outlet Cross-section出口截面宽度 Outlet Width出口弯管 Outlet Elbow出口压力 discharge pressure初始汽蚀 Incipient Cavitation传输损失 tansmission loss传送器 Transmitter船头推进舵 Bow Thruster Rudder船坞泵 Dock Pump船用泵 Marine Pump大气压 Barometric Pressure大气压力 Atmospheric Pressure带式过滤器 Band Sereen单吸离心泵 single-suctoin centrifugal单相交流电 Single-phase Alternating Current单叶片叶轮 Single Vane Impeller导向叶片 Guide Vane导向装置 Guide Arrangement低温泵 Crygenic Pump低压泵 Low Pressure Pump底料泵 Sump Pump点蚀 Pitting电感应式流量测量 Inductive Flow Measurement电功率 Electric Power电化学腐蚀 Electrochemical Corrosion电机 Electric Motor电机电耗 Current Consumption of Electric Motors 电机温升 Temperature Rise in Electric Motors电机转矩曲线 Torque Curve of Electric Motors电解腐蚀 Electrolytic Corrosion电缆密封压盖 Cable Gland电力驱动 Electric Drive电流 current电路 Electrical Circuits电气开关设备 Electrical Switchgear电位序 Electrochemical Series电压 voltage电压降 Voltage Drop顶点 Apex定位螺栓 fitted bolt动力液流 Motive Water Flow动力粘度 Dynamic Viscosity动量矩定理 Theorem of Momentum动平衡 Dynamic Balancing动下室排水泵 Cellar Drainage Pump动压力 Dynamic Pressure对开的润滑油密封 split oil seal对轮 the coupling对轮防护罩 the coupling guard对轮螺栓 coupling nut多级泵 Multistage Pump多流式泵 Multiflow Pump恩氏粘度 Degrees Engler阀门和管件 Valves and Fittings法兰结构 Flange Construction反向流动 Reversal of Flow反应堆泵 Reactor Pump反转转速 Reverse Rotational Speed防爆 Explosion Protection防反转装置 Reverse Rotation Locking Device 防腐 Corrosion Protection防护装置 guard放射 Emission非堵塞式叶轮 Non-clogging Impeller非扰动管道长度 Undisturbed Length of Piping 非稳定流 Non-steady Flow非稳定扬程曲线 Unstable Throttling Curve费鲁德准数 FROUDE Number费用 Costs复算 Re-evaluation干式安装 Dry Installation干运转 Dry Running高度 Height高速离心泵 High Speed Centrifugal Pump高压泵 High Pressure Pump隔膜泵 diaphragm pump隔膜式计量泵 diaphragm type metering pump 给水泵 feed water pump给水泵 Feed Pump工业水泵 industrial water pump工作特征 Operating Characteristics公称尺寸 Nominal Size公称压力 Nominal Pressure功 work功率 power功率 power功率测量 power measurement功率调节 power control功率损失 power loss功率因数 power factor cosφ供水泵 Water Supply Pump固体颗粒的输送 Conveying of Solids过流翼型 Flow Profile过滤器 Filter海水 Sea Water海水泵 Sea Water Pump海水淡化装置 Sea Water Desalination Plant 海水箱 Sea Chest耗水量 Water Consumption合适的流量 corrected flowrate恒定油位油杯 Constant Level Oiler虹吸流动 Syphon Flow虹吸装置 Syphoning Installation化工泵 Chemical Pump化工稳定性表 Chemical Stability Table环境保护 Environmental Protection环形泵 Ring-section Pump环形壳 Annular casing回流导向叶片 Return Guide Vane回路试验 Loop Test混流叶轮 Mixed-flow Impeller活塞传送器 Piston Transmitter货船油泵 Cargo Oil Pump机械传动 Mechnical Drive机械密封 Mechanical Seal机械效率 Mechanical Efficiency基板 Baseplate基本方程 Fundation基础 Foundation基建投资 Capital Investment级 Stage级间导叶 interstage diffuser极数 Number of Poles继电器 Relay家用供水装置 Domestic Water Supply Plant间隙宽度 Clearance Gap Width间隙密封 Clearance Gap Seal间隙汽蚀 Clearance Gap Cavitation间隙压力 Clearance Gap Pressure监测装置 Monitoring Device键 key键槽 keyway交流电 Alternating Current角速度 Angular Velocity接触器 Contactor接通压力 Switching-on Pressure节流调节 throttling control节流系数 throttling coefficient进液室 Intake Chamber进液条件 Intake Conditions进液弯管 Intake Elbow浸蚀 Erosion经济可行性计算 Economic Viability Calcuation 净正吸入压头 NPSH（Net Positive Suction Head)径向力 Radial Force径向剖分壳体 Radially Split Casing径向推力 Radial Thrust径向叶轮 Radial Impeller径向轴承 journal bearing绝对速度 Absolute Velocity卡诺冲击损失 Carnot Shock Loss卡普兰弯管 Kaplan Elbow铠装泵 Armoured Pump抗腐蚀性 Corrosion Resistance壳体 Casing可抽出性 withdrawability可调叶片 adjustable vane空气泵 Air Pump空气提升泵 Air-Lift Pump空心旋涡 Hollow Vortex孔板 Oriffice Plate孔径比 Apertuer Ratio扩压管（圆锥管） Diffuser(Conical Duct)扩压器（导轮） Diffuser(Guide Wheel)冷凝液泵 Condensate Pump冷却剂泵 Coolant Pump冷却水泵 Cooling Water Pump离心泵 centrifugal pump离心泵 Centrifugal Pump离心泵的安装 Installation of Centrifugal Pump离心泵的操作条件 Operating Conditions of Centrifugal Pumps离心泵的操作性能 Operating Behaviour of Centrifugal Pumps离心泵的冲击损失 Shock Loss in Centrifugal Pumps离心泵的间隙损失 Clearance Gap Loss in Centrifugal Pumps离心泵的平稳运行 Smoop and Quiet Running of Centrifugal Pumps离心泵的验收试验规范 Acceptance Test Codes for Centrifugal Pumps 离心泵的制造材料 Construction Material for Centrifugal Pumps离心泵的注水 Priming of Centrifugal Pumps离心泵调节 Control of Centrifugal Pumps离心泵和驱动设备保养 Care of Centrifugal Pumps and Drives离心泵失衡 Out-of-Balance of Centrifugal Pumps离心泵装置 Centrifugal Pump Plant离心式鼓风机 centrifugal blower离心式滤油机 centrifugal oil filter离心式压缩机 centrifugal compressor离心水泵 centrifugal water pump立式泵 vertical pump立式屏蔽泵（筒形泵） Vertical Can-type Pump立轴式井泵 Vertical Spindle Well Pump利息支付 Interest Payment连续性方程 Continuity Equation两相流动 Two-phase Flow临界转速 Critical Speed of Rotation流程泵 Process Pump流程型结构 Process Type Construction流道涡流 Channel Vortex流动分离 Flow Separation流动功 Flow Output流量 flowrate流量 Flow流量（体积流量） Capacity流量测定 Flow Measurement流量测量 Capacity Measurement流量调节器 Flow Controller流量系数 Flow Coefficient流量指示器、流量观察窗 flow indicators流速 Flow Velocity流体 Fluid流体动力学 Fluid Dynamics流体机械 Fluid Flow Machine流线 Flow Line轮毂比 Hub Ratio螺杆泵 screw pump(spiral pump)螺纹紧固件 threaded fastener马达输出功率 motor output power马达输入功率 motor input power马达效率 motor efficiency迷宫密封 labyrinth gland迷宫密封箱体 labyrinth gland housing迷宫式密封 Labyrinth Seal密封衬套 shaft sleeve内效率 Internal Efficiency那维尔－斯托克斯方程 NAVIER-STOKES Equation耐酸泵 Acid Pump焾 Enthalpy能 Energy能量级 Energy Level逆时针旋转叶轮 Counterclockwise Rotating Impeller 凝泵 condensate extraction pump凝结水泵 condensate transfer pump凝汽器抽气泵 condenser air pump牛顿流体 NEWTONian Fluid扭力杆 Torsion Rod扭力计 Torsion Dynamometer欧拉方程 EULER Equation排出段 Discharge Casing排出管线 Discharge Line排出管嘴 Discharge Nozzle排出损失 Discharge Loss排灌站水泵 Drainage Station Punp排气 Venting排气阀 Vent Valve排水泵 Dewatering Pump排水量 Water Yield排污泵 blowdown pump(sewage pump) 排污泵 Faeces Pump旁路 By-Pass皮带传动 Belt Drive皮托管 Pitot Tube频率 frequency平垫片 flat gasket平衡鼓 balance drum平衡鼓螺母 balance drum nut平衡孔 balance'hole平衡液体流量 balance water flow平衡装置 balancing device平衡状态 equilibrium condition平皮带传动 flat belt drive屏蔽泵 Canned Motor Pump起动 Start Up起动过程 Starting Process起动时间 Starting Time起动转矩 Starting Torgue气囊的形成 Formation of Air Pockets 气体分离 Gas Separation汽蚀 Cavitation汽蚀磨损 Cavitation Wear汽蚀噪音 Cavitation Noise强制循环泵 forced-circulation pump 切断压力 Switching-off Pressure切换频率 Switching Frequency氢指数 Hydrogen Exponent清水泵 Clean Water Pump驱动 Drive热 Heat热泵 Heat Pump热含量 Heat Content热虹吸 Thermosyphon热量 Quantity of Heat热载体泵 Heat Transfer Media Pump热障 Thermal Barrier容积泵 Positive Displacement Pump入口导叶 suction guide入口管嘴 Entry Nozzle入口截面 Inlet Cross-section入口压力 suction pressure入口锥管 Entry Cone润滑油泵 Lubricating Oil Pump三相电机 Three-phase Motor三相电流 Three-Phase Current三相制 Three-phase System设计工作点 Design Duty Point声学 Acoustics时间 Time视在功率 Apparent Power试验台 Test Bed手动泵 Hand Pump首级内泵壳 first stage ring section输送黏性液体黏性泵 centrifugal pump handling viscous liquids 甩油环，抛油环 oil thrower双缸泵组 Twin Pumping Set双流道泵 two-channel impeller pump双流道叶轮 two-passage impeller双蜗壳 Double Volute水厂泵 waterworks pumps水锤 water hammer水的硬度 hardness of water水力效率 hydraulic efficiency水流量计 water meter水泥壳泵 concrete casing pump水喷射 water jet水喷射泵 water jet pump水温 water temperature水下泵 underwater pump水下电机 underwater motor水下电机泵 underwater motor pump水银泵 mercury pump水硬度 water hardness速度 Velocity速度测定 Measuring of Speeds速度测量 Velocity Measurement速度三角形 Velocity Triangle损失系数 Loss Coefficient锁紧垫圈、防松垫圈 lock-washer探头 Probe特性 Characteristic特性曲线 Characteristic Curve特性因数 Characteristic Factor体积流量 Volume Flow停转时间 Run-down Time通量线 Flux Line同步转速 Synchronous Speed铜导体 Copper Conductor投资评价 Capital Servicing透平驱动泵 Turbine Driven Pump涂层 Coat of Paint推力盘 thrust collar推力瓦 thrust pad推力轴承撑板 thrust carrier ring 推力轴承室 thrust bearing housing 托轮 Jockey Pulley弯管 Elbow弯管壳体泵 Elbow Casing Pump卧式泵 Horizontal Pump污泥泵 Sludge Pump污水泵 Sewage Pump无冲击流入 Shock-free Entry无泄漏 Leak-tightness吸入口 Suction Nozzle吸入室 Suction Chamber吸入性能 Suction Behaviour吸入压头 Suction Head吸入叶轮 Sution Impeller纤维素 Cellulose纤维性物料 Fibrous Material相对速度 Relative Velocity相合定律 Congruence Law相似条件 Similarity Conditions相位移 Phase Displacement消防泵 Fire-fighting Pump消声测量 Noise Abatement Measures 销钉、定位销 dowel pin小舌片 tab效率复算 Efficiency Re-evaluation斜度 Steepness斜流叶轮 Diagonal Impelier斜盘式泵 Swash Plate Pump泄漏出的密封水隔离门（相当于密封水卸荷阀） leak-off isolating valve 泄漏损失 Leakage Loss星形轮 Star Wheel星形－三角形起动器电路 Star-delta Starter Circuit性能图 Performance Chart许可公差 Warranty Tolerance许可区域 Warranty Zone旋流 Swirl Flow旋塞阀 Cock旋涡泵 Peripheral Pump旋涡式叶轮 Peripheral Impeller旋转方向 Direction of Rotation旋转速度 Rotational Speed压差 Differential Pressure压降 Pressure Drop压力 Pressure压力波 Pressure Wave压力波动 Pressure Surge压力测量 Pressure Fluctuation压力测量 Pressure Measurement压力等级 Pressure Categories压力给水装置 Hydrophor Plant压力计 Manometer压力脉动 Pressure Fluctuation压力容器 Pressure Vessel压力损失 Pressure Loss压力损失 Head Loss压力系数 Pressure Coefficient压头 Pressure Head验收试验 Acceptance Test扬程 head扬程曲线 Throttling Curve叶轮 impeller叶轮 ipeller叶轮 impeller叶轮侧面摩擦 Impeller Side Friction叶轮的修整 Trimming of Impellers叶轮叶片 Impeller Vane叶轮叶片节距调节 Impeller Blade Pitch Adjustment叶片叶片 vane叶片角 Blade Angle叶片节距调节机构 Blade Pitch Adjustment Gear叶片节距调节装置 Blade Pitch Adjustment Device叶梢背部切削 Cutting Back of Impeller Vane Tips叶栅 vane cascade叶栅流动 Cascade Flow液化气泵 Liquefied Gas Pump液环泵 Liquid Ring Pump异步电机 Asynchronous Motor阴极保护 Cathodic Protection音量级 Sound Volume Level音速 Sound Velociyt引水级 Priming Stage应变测定技术 Strain Measurement Technology应力腐蚀（裂纹） Stress Corrosion (Cracking)永久磁铁联轴器 Permanent Magnet Coupling用入口导向叶片控制涡流 Rotation Swirl Control by Inlet Guide Vanes 油泵 Oil Pump油挡 oil guard有势流动 Potential Flow有效功率 Acitive Power有效汽蚀余量 n.p.s.h.r有用功率输出 Useful Output右旋叶轮 right-handed impeller诱导轮 Inducer圆弧形叶片 Circular Arc Vane圆周速度 Peripheral Speed(Circumferential Velocity)运动粘度 Kinematic Viscosity运行时数 Number or Running Hours再生泵 Regenerative Pump脏水泵 Dirty Water Pump折旧 Amortization振动 Vibration正吸入压头 positive suction head直径系数 Diameter Coefficient直联泵组 Close-coupled Pumping Set直流电 Direct Current直流电机 Direct Current Motor直流平板式起动器 Direct Current Face Plate Starter止动销 stop pin纸浆泵 Pulp Pump纸浆浓度 Pulp Density纸浆输送 Conveying of Pulp制造公差 Manufacturing Tolerance质量 Mass质量惯性矩 Mass Moment of Inertia质量流量 Mass Flow中点线 Mid-point Conductor中性线 Neutral Conductor中压泵 Medium Pressure Pump重力加速度 Gravitational Constant重量 Weight轴轴承 Bearing轴承支架 bearing housing轴承支架盖 bearing housing cover轴封 Shaft Seal轴封环 Shaft Sealing Ring轴功率 Shaft Power轴颈 shaft journal轴流泵 axial pump轴流泵 Axial Pump轴流叶轮 Axial Impeller轴套、衬套 gland bush轴推力 Shaft Thrust轴向力 Axial Force轴向剖分壳体 Longitudinally Split Casing 轴向推力 Axial Thrust主循环泵 Primary Circulating Pump柱塞泵 Plunger Pump转动惯量 Moment of Gyration转矩 Torque转矩的测定 Torque Measurement转速传感器 Rotational Speed Transmitter自动调节 Self-regulation自动断路器 Self-acting Circuit Breaker自动开关 Automatic Switches自耦变压器式起动器 Autotransformer Starter 自吸泵 Self-priming Pump自由流动泵 Free-flow Pump总测量偏差 Overall Measuring Tolerance总静压头 Total Static Head总偏差 Overall Tolerance总效率 Overall Efficiency总压力 Tital Pressure总扬程 Total Headmeasured flowratevelocity headgauge/lever correctiongenerated headseal sleeve nuts短心轴 stub axle轴 axes轴 axis轴 axle（U.S.A）轴承衬套 bearing bushing（U.S.A）轴肩挡圈；防护罩 protecting collar巴氏合金；白合金；轴承合金 white metal半贯流式轴流泵；弯管轴流泵 angle-type axial flow pump半可调式轴流泵 axial flow pump with blades adjustable when stationary 泵轴 Pump Shaft泵轴承支架 pump bearing bracket长轴深井泵 borehole shaft driven(centrifugal) pump长轴深井泵（美） multistage vertical turbine pump衬套；轴套 bushing齿形联轴器 gear-type coupling出口轴面速度系数；流量系数 capacity constant磁力联轴节齿轮泵 magnetically coupled gear pump从动螺杆；从动心轴 idler spindle从动轴 driven shaft从动轴 idler shaft弹性盘联轴器 flexible disc coupling弹性圆柱销联轴器 flexible pin coupling电磁联轴器 electromagneic coupling电磁联轴器 magneto coupling电磁联轴器 magneto-coupling调节轴 adjusting spindle副传动轴 countershaft spindle副轴；中间轴；从轴 auxiliary shaft刚性联轴器 solid coupling刚性联轴器；刚性联接 rigid coupling功率曲线；轴功率曲线；制动功率曲线 brake horsepower curve贯流泵；直管轴流泵 rubular type axial flow pump滚动轴承 anti-friction bearing滚动轴承 ball/rolling bearing滚动轴承 rolling contact bearing滚针轴承 needle bearing恒定轴向间隙齿轮泵 fixed axial clearance gear pump滑动轴承 plain friction bearing滑动轴承 sleeve bearing滑动轴承 sliding bearing活塞销；轴头销 gudgeon pin架；轴承衬套（美）；泵支架（美) frame径向滚柱轴承 radial roller bearing径向球轴承 radial ball bearing径向轴封 radial shaft seal可调式轴流泵 axial flow pump with adjustable(or variable)pitch blades 可调式轴流泵 propeller pump with adjustable or variable pitch blades 可逆叶片轴流泵 axial flow pump with reversible blades可逆叶片轴流泵 propeller pump with reversible blades空心轴 hollow shaft shaft冷冻装置用无轴封泵 glandless pump for refrigerating installation立轴式井泵 Vertical Spindle Well Pump联轴器 coupling笼形轴承托架 bearing bracket lantern笼形轴承托架 bearing housing lantern螺纹联轴器 screwed coupling米切尔型推力轴承 Michell type thrust bearing内轴承泵 pump with internal bearing(s)挠性法兰联轴器 flexible flange coupling挠性联轴器 elastic coupling挠性联轴器 flexible coupling挠性轴 flexible shaft配流盘式轴向活塞泵 flat valve axial piston pump配流盘式轴向活塞泵 port plate axial piston pump配流盘式轴向活塞泵 valve plate axial piston pump喷水推进轴流泵 axial flow pump for water jet propulsion喷水推进轴流泵 water jet propulsion axial flow pump偏心轴 eccentric shaft强制润滑轴承；压力润滑轴承 forced oil lubricated bearing球面推力轴承 spherically mounted thrust bearing曲轴 crankshaft曲轴防护罩 crankguard曲轴防护罩 crankshaft guard曲轴箱支座 crankcase pedestal曲轴销 crank pin驱动轴；传动轴 drive shaft全可调式轴流泵 axial flow pump with blades adjustable in operation全可调式轴流泵 axial flow pump with variable piteh blades水润滑轴承 water lubricating bearing套筒联轴器 sleeve coupling推力滚柱轴承 thrust roller bearing推力球轴承 ball thrust bearing推力轴承 thrust bearing推力轴承；扇形块 thrust bearing segment推力轴承扇形块 thrust bearing pad外轴承泵 pump with external bearing(s)万向轴 cardan shaft无轴封泵 glandless pump无轴封计量泵 glandless metering pump橡胶轴承 rubber bearing斜垫轴向推力轴承 tilting pad axial thurst bearing斜缸型轴向柱塞泵 tilting cylinder block type axial plunger pump 斜盘式轴向活塞泵 cam plate type axial piston pump斜盘式轴向活塞泵 swash plate axial piston pump斜盘式轴向活塞泵 wobble plate axial piston pump斜置轴流泵 inclined axial flow pump斜轴式轴向活塞泵 angle-type axial piston pump斜轴式轴向活塞泵 bent axis axial piston pump旋涡轴线 eddy axis旋涡轴线 vortex axis压入式轴承盖 pressed-in type bearing cover叶轮轴面形状；工作轮图 profile of the impeller液体动力轴承 hydrodynamic bearing永久磁铁联轴器 Permanent Magnet Coupling油环轴承 ring lubricating bearing油环轴承 ring oiling bearing油脂润滑轴承 grease lubricated bearing支轴销；支点销 fulcrum pin支座；轴架 pedestal中间心轴 idler axle中间心轴 intermediate axle中间轴；副轴；从轴 counter shaft中间轴；副轴；从轴 intermediate shaft轴 shaft轴；心轴；锭子 spindle轴承 bearing轴承 Bearing轴承衬（套） bearing bush轴承衬套 bearing cartridge轴承衬套 bearing insert轴承端盖 bearing end cover轴承盖 bearing cover轴承合金 bearing alloy轴承架 bearing bracket轴承架 bearing pedestal轴承架 bearing spider轴承架；泵托架 headstock轴承架固定式泵 pump with bearing bracket轴承浸泡试验；轴承泡胀试验 bearing swelling test 轴承冷却室 bearing cooling chamber轴承螺母 bearing nut轴承套 bearing sleeve轴承体；轴承箱 bearing box轴承托架箱 bearing bracket housing轴承瓦；轴承衬垫；轴承衬套 bearing line轴承吸水试验 bearing absorption test轴承箱；轴承体 bearing housing轴承座 bearing carrier轴对称 axial symmetry轴对称；旋转对称 rotational symmetry轴对称流 axisymmetrical flow轴封 shaft seal轴封 Shaft Seal轴封环 Shaft Sealing Ring轴功率 Shaft Power轴功率；制动功率；制动马力 brake horsepower轴护套 Shaft Protecting Sleeve轴护套 shaft tunnel tube轴护套（美） shaft enclosing tube轴肩挡圈 loose(shaft) collar轴肩挡圈 shaft collar轴肩挡圈 shoulder ring轴颈 neck journal轴颈 shaft neck轴颈 axle journal轴颈；期刊 journal轴颈套；填料衬套 neck bush轴流泵 Axial Pump轴流泵；螺桨泵 axial flow pump轴流泵叶轮室 propeller bowl轴流式涡轮机 axial-flow turbine轴流式叶轮 axial flow impeller轴流叶轮 Axial Impeller轴流增压器 axial flow booster轴马力；轴功率 shaft horsepower轴面流线 meridian streamline轴面速度 meridional velocity轴面投影图 elevation view轴配流径向活塞泵 pintle valve radial peston pump 轴配流径向活塞泵 valve spindle radial piston pump 轴套 shaft wearing sleeve轴套 Axis Guide轴套 shaft sleeve轴套；套（筒） sleeve轴套拆卸器 sleeve puller轴推力 Shaft Thrust轴瓦；轴承箱；轴承体 bearing sheet轴位指示器 shaft position indicator轴吸泵 axial inlet pump轴向单吸液环泵 axial single entry liquid ring pump轴向导叶 axial diffuser轴向滑移 aixal slip轴向活塞泵 axial piston pump轴向加速度 axial acceleration轴向间隙 axial clearance轴向间隙压力补偿齿轮泵 gear pump with pressure-dependent axial clearance 轴向间隙压力补偿齿轮泵 gear pump with pressurized side plate轴向力 axial force轴向力 Axial Force轴向流动 axial flow轴向磨损指示器 axial wear indicator轴向剖分壳体 Longitudinally Split Casing轴向双吸液环泵 axial double entry liquid ring pump轴向速度 axial velocity轴向推力 axial thrust轴向推力 Axial Thrust轴向吸入泵 axial suction pump轴向压力 axial pressure轴向柱塞泵 axial plunger pump主动螺杆；驱动心轴 driving spindle主动轴 driving shaft柱销联轴器 pin coupling爪形联轴器 claw coupling爪形联轴器 dog coupling爪形联轴器 jaw coupling锥形联轴器 cone(type) coupling锥形联轴器 taper coupling子午面；轴面 meridian plane自锁轴套 self-locking sleeve半贯流式轴流泵；弯管轴流泵 angle-type axial flow pump半可调式轴流泵 axial flow pump with blades adjustable when stationary泵 pump泵房 pump house泵盖 casing cover泵缸 pump barrel泵缸 pump cylinder泵缸套 pump barrel line泵缸套 pump cylinder line泵缸体 pump cylinder block泵工况 pump operating condition泵工况 pump operating duty泵体 pump body泵体衬套 pump body insert泵体衬套 pump casing insert泵托架 pump bracket泵站设计 design of pump station泵罩 outer pump mantle泵支架 pump bearing lantern泵轴承支架 pump bearing bracket泵装置 pumping device泵装置 pumping machine泵组 integral pump group泵座 pump frame闭式叶轮泵 pump with enclosed impellers波纹管泵 bellows pump仓底泵 bilge pump侧流道泵壳；旋涡泵泵体 casing with transfer passages 侧流道泵壳；旋涡泵泵体 annular casing长轴深井泵 borehole shaft driven(centrifugal) pump 衬青铜泵 bronze fitted pump齿轮比例泵 abjustable discharge gear pump冲击波泵（振荡器） shock wave oscillator导流壳式多级泵 pump with bowl-type vaned casing低温泵 cryopump底料泵；塔底液泵 bottoms pump底吸泵 bottom inlet pump底吸泵 bottom suction pump电磁驱动泵 pump with cyclic electromagnetic drive风动活塞泵 air-powered piston pump辅泵；辅助泵 auxiliary pump辅扫仓泵；副清仓泵 auxiliary stripping pump附属泵 attached pump工程用泵 building site pump固定缸体泵 pump with nonrotating cylinder固体输送泵 pump for water-borne solids管网泵 pump for pipe system灌泵 priming of pump锅炉给水泵 BFW锅炉给水泵 boiler feed pump锅炉回水循环泵 boiler return circulating pump锅炉酸洗泵 pump for acid washing of boiler航空用泵 aviation pump合金泵 alloy pump合金钢泵 alloy steel pump环壳泵 annular casing pump灰渣泵 ash pump回水泵 back water pump活性污泥泵 activated sludge pump活性污泥泵 biological sludge pump机械密封泵 pump with mechanical seal基本负荷泵 base load pump加硼泵 boron addition pump甲板泵 board pump架；轴承衬套（美）；泵支架（美) frame减摇泵 anti-roll pump铰链滑片泵 articulated vane pump接力泵 boost pump铠装泵 armoured pump可调隔膜泵 adjustable diaphragm pump可调式轴流泵 axial flow pump with adjustable(or variable)pitch blades 可逆叶片轴流泵 axial flow pump with reversible blades沥青泵 bitumen pump螺旋泵 Archimedean screw pump密闭式螺杆泵 airtight screw pump内轴承泵 pump with internal bearing(s)耐磨泵 abrasion resisting pump耐酸泵 acid pump逆洗泵 back wash pump农用喷药泵 agricultural spray pump for chemicals盘状活塞泵 bucket piston pump喷灌泵 agricultural spray pump喷射泵；喷射器 ejector喷水推进轴流泵 axial flow pump for water jet propulsion喷雾器－泵组 atomizer-pump皮带传动泵 belt driven pump啤酒泵 beer pump平衡转子式滑片泵 balanced rotor vane pump气抽液喷射泵 gas jet liquid ejector气动泥浆泵 air-pressure actuated slurry pump气泡泵；曼木特泵；气举泵 air lift pump气体喷射泵 gas ejector汽车用泵 automobile pump汽抽气喷射泵 steam jet air ejector汽抽水喷射泵 steam jet water ejector前置泵；增压泵 booster pump潜水深井泵 borehole submerged pump球形活塞泵 ball piston pump全可调式轴流泵 axial flow pump with blades adjustable in operation 全可调式轴流泵 axial flow pump with variable piteh blades全青铜泵 all bronze pump熔盐泵 pump for liquid salts pump上壳（井泵）；吐出段 delivery casing上壳（井泵）；吐出段 discharge casing深井泵 borehole pump食品泵 pump for edible fluids双壳泵 barrel insert pump双吸泵 balanced suction pump水抽气喷射泵 water jet air ejector水锤泵；振动机 pulsator水喷射泵 water ejector饲槽自动泵；家畜自动饮水泵 animal self-operated drinking water pump 饲槽自动泵；家畜自动饮水泵 automatic trough pump碎纸浆泵 broke pump甜菜泵 beet pump甜菜根泵 beet tails pump筒袋式泵 barrel pump筒袋式油泵 barrel oil pump外轴承泵 pump with external bearing(s)往复式深井泵 borehole reciprocating pump微型泵 micro-pump无叶片泵 bladeless pump吸附真空泵 absorption vacuum pump吸收泵 absorption pump相对叶轮泵；背靠背叶轮泵 pump with opposed impellers箱桶抽空泵 barrel emptying pump斜轴式轴向活塞泵 angle-type axial piston pump斜轴式轴向活塞泵 bent axis axial piston pump悬臂叶轮泵 pump with overhung impeller压缩空气驱动泵 air operated pump压载泵 ballast pump盐水泵 brine pump叶轮串并联泵 pump with series or parallel connection impellers液化天然气用低温泵 cryopump for liquefied natural gas液态金属泵 pump for liquid metals液体喷射泵 liquid ejector增压泵 boosting pump增压泵；压送泵；气筒 inflator增压给水泵 booster-feed pump增压扩散泵 booster diffusion pump蔗渣泵 bagnsse pump蒸汽机泵 steam pumping engine蒸汽脉冲泵；脉冲泵 steam pulsator蒸汽脉冲泵；脉冲泵 pulsometer蒸汽喷射泵 seam ejector中段泵壳；中段 stage casing中开泵 axially split pump轴承架；泵托架 headstock轴承架固定式泵 pump with bearing bracket轴流泵；螺桨泵 axial flow pump轴流泵叶轮室 propeller bowl轴吸泵 axial inlet pump轴向单吸液环泵 axial single entry liquid ring pump轴向活塞泵 axial piston pump轴向双吸液环泵 axial double entry liquid ring pump轴向吸入泵 axial suction pump轴向柱塞泵 axial plunger pump铸铁泵 all iron pump转子可抽出式泵 pump with withdrawable rotor assembly钻井冲洗泵 borehole flushing pump摆线螺杆泵 cycloidal screw pump半开式叶轮离心泵 centrifugal pump with semien closed impeller pump 闭式旋涡泵 closed peripheral pump闭式叶轮离心泵 centrifugal pump with shrouded impeller不堵塞泵 chokeless pump舱壁泵 bulkhead mounted pump除氧化皮泵 descaling pump除氧器供给泵 deaerator lift pump除氧器循环泵 deaerator recirculating pump传导泵 conduction pump地下室排水泵 cellardrainage pump定压泵 constant pressure pump非接触齿轮泵 contactless gear pump伏辊断头纸桨泵 couch break pump给料泵 charge pump恒速泵 constant speed pump化工用泵 chemical pump化学纸浆泵 chemical pulp pump化学纸浆泵 chemical stock pump环壳泵 circular casing pump混料泵 contactor pump混凝土泵 cement grout pump混凝土泵 cementation pump混凝土泵 concrete pump混凝土涡壳泵 concrete volute pump货油泵 cargo oil pump夹装泵 bung mounted pump甲板泵 deck pump甲板冲洗泵 deck wash pump开式叶轮离心泵 centrifugal pump with open impeller矿井工作面泵 coal face pump冷剂泵 collant pump冷剂泵 coolant pump冷剂泵 cooling medium pump冷凝泵 condensate pump冷凝泵 condensate extraction pump冷却水泵 cooling water pump离心泵 centrifugal pump离心机出料泵 centrifugal run-off pump离心喷射泵 centrifugal-jet pump离心－旋涡泵 centrifugal-peripheral pump离心－旋涡泵 centrifugal-turbine pump链传动泵 chain drive pump链式泵 chain pump裂化装置泵 cracking pump流道式叶轮泵 channel impeller pump滤清污水泵 decanted sewage pump氯乙烯塑料泵 chlorovinyl plastic pump煤泥泵 coal slurry pump煤水泵 coal pump内啮合齿轮泵 crescent gear pump内啮合齿轮泵 crescent seal gear pump内配流径向活塞泵 centrally ported radial piston pump内循环形屏蔽泵 canned motor pump with inner recirculation 耐蚀泵 corrosion free pump耐蚀泵 corrosion resisting pump凝水回收泵 condensate recovery pump凝水回收泵 condensate return pump凝水－增压泵 condensate-booster pump凝水－增压－给水泵 condensate-booster-feed pump屏蔽泵 canned motor pump汽车冲洗泵 car wash pump巧克力输送泵 chocolate pump切削冷却乳剂泵 cutting oil pump清水泵 clean water pump曲柄泵 crank pump曲柄飞轮泵 crank and flywheel pump深井泵 deepwell pump石灰汁泵；清汁泵 clarified juice pump手压泵；手动泵 cottage pump水泥桨泵 cement slurry pump陶瓷泵 ceramic pump陶瓷酸泵 ceramic acid pump甜菜丝泵 cossette pump凸轮泵 cam pump凸轮转子式刮片泵 cam rotor vane pump凸轮转子式刮片泵 cam-vane pump外循环形屏蔽泵 canned motor pump with outer recirculation 无曲柄泵 crankless pump无曲柄多缸泵 crank-less multicylinder pump无曲柄污水泵 crankless sewage pump无曲柄消防泵 crankless fire pump洗舱泵 butterworth pump洗煤用泵 coal washing pump向心泵 centripetal pump斜盘式轴向活塞泵 cam plate type axial piston pump循环泵 circulating pump压缩空气驱动泵 compressed air pump液化天然气用低温泵 cryo pump for LNG诱导轮离心泵 centrifugal pump with inducent原生污泥泵 crude sludge pump原生污水泵 crude sewage pump原油泵 crude oil pump圆筒感应泵 cylindric induction pump粘浆泵 cellulose pulp pump直联泵；单体泵 close coupled pump中央密封式活塞泵 centre-packed type piston pump铸钢泵 cast steel pump装入式泵 built-in pump（主机）半负荷泵 half load pump（主机)全负荷泵 full load pump比例泵 dosing pump玻璃泵 glass pump差动活塞泵 differential piston pump柴油机驱动泵 diesel pump长喉管喷射泵 jet pump with long Venturi tube衬硬胶泵 ebonite pump衬硬胶泵 hard rubber lined pump。