Alfa Laval 燃油供油单元简介
Alfa Laval产品说明书
Product scopeEVAPORATORSIn evaporator duties, a brazed plate heat exchanger (BHE) can be optimized by vary-ing the channel plate characteristics and adding a distribution system. The distribution system provides a uniform distribution of the refrigerant throughout the heat exchanger. This ensures high performance and stable superheating under variable conditions.Though designed to operate with typical heat fluxes, Alfa Laval’s distribution systems can be adapted to higher and lower heat-flux conditions as well.CONDENSERSAlfa Laval offers a range of BHEs optimized as condensers. They feature specially-designed channel plates combining different corrugation angles, pressing depths and asymmetric channels. This makes them suit-able for a wide variety of heat-pump duties – from water heaters and micro-heat pumps to residential and commercial systems.ECONOMIZERSThe small footprint and versatile configurations of Alfa Laval’s BHEs make them easy to optimize for economizer duties.OIL COOLERSAlfa Laval’s BHE series of dedicated oil coolers, DOC range, offer unparalleled efficiency for hydraulic and lube oil cooling. The extra sturdy construction is fast and easy to install due to special connectionblocks that decrease stress on the standard connection by 80%.GAS COOLERSAlfa Laval is leading the development of new technologies for green cooling with natural refrigerants such as CO 2 and propane. Alfa Laval offers the widest range of high-pressure heat exchangers, which are not only more efficient, but also more reliable as well as safe for the environment and the people working around them.Alfa Laval Partner AcademyAs an Alfa Laval partner, you get access to a highly specialized learning centre backed by the resources of a global market leader. Our online or classroom training programs will boost your sales andservice proficiency up to its full potential.Three innovative solutions that break barriersDYNASTATIC DESIGN / FLEXIBILITYThis breakthrough production method gives you complete freedom to design the perfect refrigerant distribution system for your products. Whatever placement, size and number of distributors you want, we can produce it.Alfa Laval offers product specialists within applications such as• Air conditioning (chillers, absorption chillers and VRFs)• Heat pumps • Boilers• Solar heating• Domestic hot water • Process cooling • Fuel cells• Combined heating and power • Air dryers• Air compressors • Oil cooling• Transport refrigeration • Wind power• Vending machines • Engine cooling• Engine oil and fuel filtration • Heat recovery• Industrial refrigeration • Commercial refrigerationPartner with Alfa Laval to become best in classWith our unique wealth of experience, our dedication to finding innovative new heat transfer solutions with greater efficiency and lower energy consumption, and our global manufacturing and distribution network, Alfa Laval is your ideal partner.Growing our businesses together Becoming an authorized Alfa Laval distribution partner provides you with tools and support that aid in growing your business from new and existing customers.Support for competitive powerAlfa Laval Anytime is our eBusiness portal for partners. Find, calculate, customize and order your Alfa Laval products with just a few simple clicks, 24/7. The tool is always up to date and provides real-time stock count as well as track-and-trace functionality.The Alfa Laval Product guideThe online product guide helps you or your customers to quickly find the right heat exchanger at the right capacity within 5 clicks. All products are available for immediate shipping.Alfa Laval offer various levels of support depending on the scale of your business, how closely you wish to work withAlfa Laval and your ambitions for the future. Each level boosts your business by offering tools and tailored support for your day-to-day work. We offer a variety of training programs, sales-supporting web tools, marketing materials, and much more.We offer you product and application knowledge with a commercial approach, hands-on demonstration of technical features and analysis of specific sales points.A brazed plate heat exchanger (BHE) is very compact compared to other heat exchangers for similar applications, meaning less refrigerant is needed. AlfaNova is a range of fusion-bonded, all-stainless-steel heat exchangers. They are ideal in situations involving media that is corrosive or very sensitive to contamination of copper or nickel.All BHE units are pressure tested and labelled to comply with all major industry approvals (PED, UL, Chinese PV , KHK, KRA, and CRN). They are also leak tested with helium to ensure that every unit is gas tight.Alfa Laval also offers the widest range of AHRI certified heat exchangers which means that performance is guaranteed by an acclaimed third party global HVAC organization.Alfa Laval offers a complete range of brazed and fusion bonded heat exchangers.Please note that the table is a reference. Always check actual designs and dimensions before order.** AN-XX is a the AlfaNova range of fusion-bonded, all stainless steel heat exchangers.Alfa Laval can optimize the BHEaccording to specific applications and system requirements. Each optimized heat exchanger is unique to thecustomer, with a unique article number. Customers can be safe in the knowledge that Alfa Laval uses all its know-how to optimize their products.Continuous innovation and productdevelopment are ensured by Alfa Laval’s in-house laboratories available at all production sites. All developments and solutions are validated before being offered to customers.The Alfa Laval advantage。
阿法拉伐 Alfa Laval
分油箱的工作原理
依靠重力来实现沉 降的容器 通过增加一些板片可增加 沉降面积，改善了分离效果
倒 入 时 速 度 要 慢
, 如果要想得到很大的或很好的 分离效果,则可以把此容器的表 面积增大.
25
常见的分离设备 = 沉降罐(结构稍作变动)
• 带碟片的静态分离设备
进料
排污口
重相 轻相
Байду номын сангаас
26
进料
• 把这个沉降罐
52
53
54
55
56
57
Waiting to full speed, it may take few minutes
Starting
Full speed
58
1. Circulate the process liquid through a heater until the desired temperature is obtained.
35
Design & Function Overview
36
Mechanical & Power transmission
37
Process main parts
38
Purifier bowl
1. Gravity disc 2. Level ring
39
40
Right gravity disc
立起来后
轻相 重相
排渣口
27
从使用重力到离心力
进料 进料
带有碟片的离心分离器
1.
轻相
3. 2.
>5000 g
28
离心分离
使用了强制沉降手段
根据Stokes´ 定律，其沉降速度恒定
30万吨油船主要设备表
TYPESPECIFICATIONSQ’TY MANUFACTURERREMARKS 序号设备名称型号规格数量生产厂家备注Maine engine MCR: 29400KW ×76rpm CSR: 26460KW ×73.4rpmFuel consumption: 167 g/KW + 5%Boring × Stroke: 840mm ×3150mmTurbocharger ABB TPL80-B122Diesel Generators NMCR: 1313KW/900rpmBoring ×Stroke: 200mm ×280mmFuel consumption: 185kg/KW.h(85%load)Power: 1050 kva/450v/60HzEmergency Generator Power: 345Kw / 431KVA at 1800 rpm Fuel consumption: 90l/h at 100% loadAuxiliary Boiler Steam output: 45000Kg / h 辅锅炉Working pressure: 0.7/2.0MPaCapacity on diesel oil, min/max.:350/3276kg/hCapacity on fuel oil, min/max.:350/3439kg/hCapacity : 58.5 m 3 /hDelivery head : 262.7mRated output for motor : 62kW 3558rpmStatic pressure: 588mmWCAir flow at 45ºC : 54270m 3/h Motor : 125kW 1776rpm Delivery head: 2.5MPa Capacity at 4cSt: 9130 l/h Capacity at 380cSt: 10464 l/h Motor : 13.2kW 3516rpmDM74.052应急发电机4MISSION D-type2Aalborg /DanmarkBurnerKBSD 3350Feed Water Pump 3GASC 12-06E 1NORDHAVN /Denmark主机2W ärtsil ä1050W6L20Auxpac3W ärtsil ä QiyaoDiesel Co ./Shanghai 发电机17RTA84T-D1Doosan Engine Co., Ltd.MTC A 65/4B 3Combustion air fanHN1155(1250)-800/D 2Fuel oil pumpTYPESPECIFICATIONSQ’TY MANUFACTURERREMARKS 序号设备名称型号规格数量生产厂家备注Exhaust Gas Boiler Steam output: 2300Kg / h 废气锅炉working pressure: 0.7MPaCapacity : 3.1 m 3 /h Delivery head : 104mRated output for motor : 1.73kW 3501rpm Capacity : 20 m 3 /h Delivery head : 35mRated output for motor : 4.6kW 3440rpmF.O.SUPPLYUNIT M/E &A/EFuel oil capacity: 6.6 m 3/h主辅机燃油供油单元Capacity : 9.7 m 3/hElectric motor: 4.6KW, 3500r / min Capacity : 24.6 m 3 /hElectric motor: 12.6KW, 3500r / min Automatic filterBoll & Kirch 6.60.1M/E: 50 microns nom A/E: 10 microns nom Fresh water generator JWSP-26-C100Capacity: 30m 3 / 24h 造水机Salinity max: 2.0ppm Capacity: 62m 3 / h Head pressure: 4.2 bar Rated output :21.4 kw Capacity: 2.1m 3 / h Rated output :0.75 kw Sewage treatment unit Treating capacity: 3.01 m 3/day 污水处理装置Power consumption : 2.2kW8ST-41 南京绿洲71ALFA LAVALEjector pump CNL 80-80/200Freshwater pumpPVVF-2040Feeder pump IMO ACE 038N3Booster pump IMO ACG 052N76AMB-M-50-SS1AURAAalborg /DanmarkFeed Water PumpCR 3-152Economizer water circulation pump Dickow25MISSION XW 1TYPE SPECIFICATIONSQ’TY MANUFACTURERREMARKS 序号设备名称型号规格数量生产厂家备注Main air compressor Capacity: 430m 3/ h Working pressure: 30bar Speed: 1770 rpmPower requirement: 84KwTopping up air compressor Capacity: 200m 3/ hWorking pressure: 30bar Speed: 1770 rpmPower requirement: 38KwEmergency air compressor Capacity: 18m 3/ hWorking pressure: 30bar Speed:1750 rpmPower requirement: 4.1Kw Overhead Crane Lifting capacity: 10t Hook stroke: 27m Span: 8500mmCenter cooler Hot side Cold side Pressure drop: 68.8kPa 77.2 kPa Heat exchanged: 12300KwHeat transfer area: 410.3 m3M/E L.O. cooler Hot side Cold side Pressure drop: 64.7kPa 12.7 kPa Heat exchanged: 3030KwHeat transfer area: 593.5 m3Jacket water cooler Hot side Cold side Pressure drop: 47.5kPa 68.8 kPa Heat exchanged: 4325Kw Heat transfer area: 19.5 m3TS20-MFM1ALFA LAVALDANISH/Danmark13M30-FM2ALFA LAVALMX25-MFG1ALFA LAVAL12SWL 10T1机舱行车11WP15L1J.P. Sauer and Sohn /Germany10WP 2001J.P. Sauer and Sohn /Germany9WP 4002J.P. Sauer and Sohn /Germany补气空压机应急空压机中央冷却器主空压机主机滑油冷却器缸套水冷却器TYPE SPECIFICATIONSQ’TY MANUFACTURERREMARKS 序号设备名称型号规格数量生产厂家备注Sterm tube cooler Hot side Cold side Pressure drop: 11.1kPa 19.0 kPa Heat exchanged: 6KwHeat transfer area: 1.5 m3Incinerator Capacity: 730000 kcal / h (850KW)Power consumption: 27KWCorresponding to: 95 l/h IMO sludge oil Solid waste, continuous charging max. 135kg/h30 l/h sewage sludge Burner 燃烧器Oil pump J4-CCC-1002柴油泵Flue gas fan 风机Sludge tank Volume : 1700 litres 油渣柜Test pressure 0.8 barSludge circulating pump Capacity: 6 m 3/ h at 2.0 bar污泥柜循环泵Motor : Y902-2-2-H 2.2/2.53kW 2840/3470rpm,Sludge dosing pump Motor : 0.37Kw 污油计量泵11500rpm Diesel oil preheater TH200Rating: 2kWM/E LO. Auto filterFlow rate: 460m 3/ hMax.filter inlet pressure:12 bar Min.filter outlet pressure:1.4 bar Normal filter outlet pressure: 3-5 bar15Protector XL-280-D-80/8-A08114GS500C1南京绿洲F-50-45-T Capacity: 16-43 l / hWorking pressure : 16bar Max 21 barDN400 One stage centrifugal fanM6-FG1ALFA LAVALCapacity: 12000 m 3/ hr at 300ºC40WYXH-6-20Mono CB 14frequency controlled ALFA LAVAL焚烧炉主机滑油自清滤器艉管冷却器TYPESPECIFICATIONSQ’TY MANUFACTURERREMARKS 序号设备名称型号规格数量生产厂家备注16Capacity: 460m 3/ h ×0.65MPa Speed: 1800rpm 主滑油泵Motor: 150kWF.O. transform pump Capacity: 30m 3 / h ×0.4MPa 燃油输送泵Speed: 1200rpm Motor: 11kWL.O. transform pump Capacity: 10m 3 / h ×0.4MPa 滑油输送泵Speed: 1200rpm Motor: 3.45kWM/E crosshead L.O pumpCapacity: 70m 3/ h ×0.84MPa主机十字头滑油泵Speed: 1800rpm Motor: 34.5kWSludge pump Capacity: 16m 3/ h ×0.4MPa 渣油泵Speed: 1200rpm Motor: 7.5kWBilge pump Capacity: 5m 3 / h ×0.4MPa 舱底泵Speed: 1800rpm Motor: 2.2kWS/T L.O. Circ pump Capacity: 0.5m 3 / h ×0.3MPa 艉管滑油循环泵Speed: 1200rpm Motor: 0.37kWBilge Separator pump Capacity: 5m 3 / h ×0.3MPa 舱底泵Speed: 1200rpm Motor: 1.5kWMain cooling S.W.pump Capacity: 650/750m 3/ h ×0.20/0.15MPa主海水泵Speed: 1800rpmEMD-300C2TAIKO/JapanHNP-4011TAIKO/JapanTAIKO/JapanNHG-0.52TAIKO/JapanTAIKO/JapanHNP-6011TAIKO/JapanNHG-101TAIKO/JapanMain L.O. pump C2T-300L2TAIKO/JapanNHG-302MSTS-80HT2HPK-5A1TAIKO/Japan TYPE SPECIFICATIONSQ’TY MANUFACTURERREMARKS 序号设备名称型号规格数量生产厂家备注17Motor: 55kWCapacity: 650/750m 3 / h ×0.20/0.15MPa Speed: 1800rpm Motor: 55kWL.T.F.W. cooling pumpCapacity: 550m 3/ h ×0.25MPaSpeed: 1800rpm Motor: 55kWH.T.F.W. cooling pumpCapacity: 224m 3/ h ×0.30MPaSpeed: 1800rpm Motor: 37kWScrubber cool S.W.pump Capacity: 300m 3/ h ×0.45MPa Speed: 1800rpm Motor: 63kWDeck water seal pump Capacity: 10m 3 / h ×0.4MPa Speed: 3600rpm Motor: 3.7kWDrink w. pump Capacity: 2m 3 / h ×0.55MPa Speed: 3600rpm Motor: 3.45kWFire , Bilge & Ballast pumpCapacity: 295/300m 3/ h ×1.1/0.45MPaSpeed: 1800rpm Motor:150kWFire & G.S pump Capacity: 295/300m 3/ h ×1.1/0.45MPa Speed: 1800rpm Motor:150kWEMSE-200MD 1TAIKO/JapanEMSE-200MD 1TAIKO/JapanTMC-32MT2TAIKO/JapanTMC-40A 2TAIKO/Japan1TAIKO/JapanEMC-250MDEMDE-300C1TAIKO/JapanEMC-250MCT2TAIKO/JapanEMC-260MCT3TAIKO/Japan高温淡水冷却泵低温淡水冷却泵洗涤塔冷却海水泵甲板水封泵饮用水泵消防舱底,压载泵消防总用泵TYPESPECIFICATIONSQ’TY MANUFACTURERREMARKS 序号设备名称型号规格数量生产厂家备注Emrg .Fire pump Capacity: 270m 3/ h ×0.8MPa Speed: 3600rpm Motor:110kWF.W. pump Capacity: 10m 3 / h ×0.55MPa Speed: 3600rpm Motor: 5.5KWVac. Condenser circ.w. pumpCapacity: 1450m 3/ h ×0. 15MPaSpeed: 1200rpm Motor: 90kWCapacity: 95m 3 / h ×0.3MPa Speed: 1800rpm Motor: 15kWCapacity: 3m 3 / h ×0.05MPa Speed: 1800rpm 热水循环泵Motor: 0.43kWF.W. cooling boost pump Capacity: 25m 3 / h ×0.25MPa 淡水增压泵Speed: 1800rpm Motor: 3.45kWH.F.O. separator Flow rate: 7300 l/h (380cSt/50°C)燃油（柴油）分油机Motor: 26.5kWCapacity: 8000l / h(380cSt/50°C)Speed: 1700rpm Motor: 2.6kWCapacity: 7200l / h(380cSt/50°C)Steam consumption:300kg/hACP 045N Steam heaterShell and tube V16-2P-L=100018SPS 8712ALFA LAVALSeparate oil feed pump TMC-65MCT2TAIKO/JapanHot w. circ.pump TMC-32MT2TAIKO/JapanCondensate pumpCVC-125MT2TAIKO/JapanEMD-400C1TAIKO/JapanTMC-32MT2TAIKO/JapanEMDN-250MC1TAIKO/Japan应急消防泵淡水泵真空冷凝器循环水泵 TYPE SPECIFICATIONS Q’TY MANUFACTURERREMARKS序号设备名称型号规格数量生产厂家备注L.O. purifier for M/E Flow rate: 4650 l/h(SAE30)主机滑油分油机Motor: 8.6kWCapacity: 5800l / h(SAE30)Speed: 1700rpmMotor: 2.6KWCapacity: 5000l / h(SAE30)Steam consumption:208kg/hL.O. purifier for A/E Flow rate: 820 l/h(SAE40)辅机滑油分油机Motor: 6.4KWCapacity: 1120l / h(SAE40)Speed: 1700rpmMotor: 0.5KWCapacity: 900l / h(SAE40)Steam consumption:40l/hFan for engine room Capacity: 108000m3 / h×580Pa机舱风机Speed: 1160rpm Motor: 42.6KWExhaust fan forpurifier room Capacity: 16000m3 / h×580Pa分油机抽风机Speed: 1160rpm Motor: 12.7KWExhaust fan forWorkshop Capacity: 3000m3 / h×680Pa机修间风机Speed: 1750rpm Motor: 1.73KWFoam liquid pump capacity: 4.9 m3 / hPressure: 9.5 bar机舱高膨胀灭火系统Foam liquid tank size: 3500l Unitor22High expansion foamfire fighting system1 JCL-521 JCL-29121JCZ-140A4上海亨远Separate oil feed pump ACP 025NSteam heater Shell and tube V11-2P-L=80020SA 8111ALFA LAVAL Separate oil feed pump ACP 045KSteam heater Shell and tube V16-2P-L=80019SA 8362ALFA LAVALTYPE SPECIFICATIONSQ’TY MANUFACTURERREMARKS 序号设备名称型号规格数量生产厂家备注Local protection system for E/R 机舱局部水雾灭火系统Capacity: 9.09m 3 / h-125m Motor: 5.5KW M/E HTFW Buffer UnitCapacity: 1200L1200L 高温膨胀水箱Working pressure: 0.5MPa F.W. hydrophore unitCapacity: 1.5m3淡水压力柜单元Working pressure: 0.55MPa Drink. W. hydrophore unitCapacity: 0.5m3饮水压力柜单元Working pressure: 0.55MPa Carolifier unit Capacity: 0.5m3热水压力柜单元Working pressure: 0.5MPa UV-Sterilizer Capacity: 0-1.3m 3 / h(T50=60%≥0.9m3/h~ T50=90%≥1.3m3/h)Working pressure max: 10bar UV-dosage:36000µWs/cm2125JOWA UV11JOWA241711研究所711研究所1711研究所123XFlow1Novenco A/S ,DenmarkDedicated sprinkler pump unit 消毒器TYPE SPECIFICATIONSQ’TY MANUFACTURERREMARKS 序号设备名称型号规格数量生产厂家备注S/T Seal (Aft)艉管后密封S/T Seal (Fwd)艉管前密封Aft Seal Tank 艉管后密封油柜Sterb Tube Bearing (Aft)艉管后轴承Sterb Tube Bearing (Fwd)艉管前轴承Intermediate Shaft Bearing中间轴承Desiccant Air DryerAir flow rate (20°C,1.0 bar) : 100 m 3 / h 吸附式空气干燥器Operating pressure max: 8 bar Refrigeration Air DryerAir flow rate (35°C,7.0 bar) : 100 m 3 / h 冷藏式空气干燥器Operating pressure max: 8 bar Marine Growth preventing system防海生物装置Impressed current catho Electrical Panel:Protection system Size: 630x400x1200mm Input: 3x440Vx60Hz AC Output: Max 24VDC3021SD 01751Ultrafilter AG/GermanyCorrosion28MSD 0100电解铜铝29江苏南极127Oil collar TypeKOBELCO/Japan1111Journal Diameter Φ780126DX900CX900Capacity: 35L 船底外加电流阴极保护 TYPE SPECIFICATIONS Q’TY MANUFACTURERREMARKS序号设备名称型号规格数量生产厂家备注Shafting Earthingdevice轴系接地装置Gas WeldingEquipment乙炔瓶1 氧气瓶 2气焊设备Bilge Separator Capacity: 5m3/h舱底水分离器Working pressure: max 0.3MPaMain Reservoir Volume: 5m3主空气瓶Working pressure: 3.0MPaAux. Reservoir Volume: 0.1m3辅空气瓶Working pressure: 3.0MPaDeck Service airReservoir Volume: 1.5m3甲板日用空气瓶Working pressure: 0.8MPaAir Reservoir for Horn Volume: 0.15m3汽笛空气瓶Working pressure: 0.8MPaSteam side F.W, sidePressure drop: 0.7MPa 0.3MPaHeat quantity: 2500Kw大气冷凝器Heat-Exchanging area: 20m3Steam side F.W, sidePressure drop: 0.7MPa 0.2MPaHeat quantity: 160Kw主机缸套水加热器Heat-Exchanging area: 3m3Lathe车床Drill press DRLLING35钻床Max. Bore dia. :Φ35mm136TURNER510X1500Max. turning length:1500mm1 M/E Jacket F.W. Pre-HeaterCSMAE-3-35AtmosphereCondenserCSMAC-20-134A14.0-3.01九江海天A0.1-3.0A1.5-0.8A0.15-0.8321Unitor33USH-501TAIKO/Japan31Shaft Diameter: 844mm1。
(完整版)ALFA-LAVAL分油机原理及结构演化
ALFA-LAVAL分油机原理及机构演化（海事大学）摘要：为便于学员对分油机工作原理的理解，分析了ALFA-LAVAL分油机工作的物理原理，并比较了ALFA-LAVAL FOPX型和S型分油机主要结构和工作原理，有利于学员对ALFA-LAVAL分油机工作原理的掌握，指导轮机员对ALFA-LAVAL分油机进行的操作及维护。
关键词：分油机；原理；机构演化The principle and mechanism evolution of ALFA-LAVAL oil separator( Maritime University)Abstract:For easy understanding of the working principle of oil separator，analyzed the physical principle of ALFA-LAVAL oil separator, compared the primary construction and working principle of FOPX type and S type ALFA-LAVAL oil separator which made good for the students to know well about the working principle of oil separator and also gave guidance to marine engineer operation and maintenance.Key words: oil separator; principle; mechanism evolution船舶中低速柴油机普遍使用劣质燃油，分油机是燃油净化的核心设备，在船舶动力装置辅助机械中有着重要地位。
分油机的正常工作，对动力装置的正常运行起着保障作用，ALFA-LAVAL公司生产的分油机性能优越，故障率低，在船舶配套设备中普遍采用。
19100DWT轮机部分设备清单
1
Alfa Laval
175
31
燃油分油机(带加热器及供油泵)
F.O. Separator with Preheater and Supply Pump
型号Type: SA826
排量Capacity: 2.2m3/h
2
Alfa Laval
?
(+119)
32
柴油分油机(带加热器及供油泵)
19100DWT多用途船
19100DWT MULTI-PURPOSE VESSEL
轮机部分设备清单
(Mechanical Part)
标记
数量
修改单号
签字
日期
设计
描图
标记
数量
重量(kg)
比例
绘图
描校
校对
审定
共14页
第1页
标检
中国
长江航运集团
青山船厂
审核
日期
序号
NO
名称及型号
Name and Type
说明
Heating medium: ME jacket fresh water
1
Alfa Laval
855
27
制淡装置海水泵
SW Pump for FW Generator
型号Type: CNL80-80/200
1
Alfa Laval
166
28
制淡装置注入水处理装置
Feed Water Treatment for FW Generator
Steam heating
1
MAN B&W
15
增压空气冷却器清洗装置
阿尔法拉卢尔LKHI中心式泵简介说明书
up to 240 m3/h and provide differential pressures up to 8 barat 50 Hz.Benefits•Energy efficient: superior efficiency resulting in reduced energy consumption and CO2 footprint.•Hygienic: designed according to the most stringenthygienic design standards and with verified effective CIP cleanability.•Wide performance envelope: reduce need for parallel and serial pump installations and ensure pump operating with high efficiency.•High inlet pressure: designed for inlet pressures up to 16 bar and can therefore be used in systems with higherpressure rating.Standard designAll media contacting steel components like pump casing, impeller, impeller nut and backplate are in W. 1.4404 (AISI 316L). A stainless steel shroud protects the motor and four adjustable stainless steel legs support the complete unit.A compression coupling securely attaches the stub shaft to the motor shaft with precision alignment, and the semi-open impeller with a special vane design ensures efficient and gentle handling of the product as it moves through the pump. As standard, the LKHI pump is equipped with an internal single mechanical shaft seal but is also available with a flushed shaft seal. The secondary seal of the flushed seal is a long-lasting lip seal. The front-loading shaft seal makes maintenance fast, easy and inexpensive. It takes just a few minutes to replace the shaft seal. In addition, the balanced design minimizes the risk of seal opening during unforeseen pressure shock.TECHNICAL DATAOther steel parts:Stainless steel Inside surface finish:Standard blasted Product wetted elastomers:EPDM Rotary seal face:CarbonStationary seal face:Silicon Carbide60Hz:1.2 - 34 kWOPERATING DATAFlush media:Max 70°CWater consumption:0.25 - 0.5 l/minDimensions (mm)Pump specific measuresB 876688106119126126118102C 234327322328283562D 247247253303303329329329329E5187636954646477106Moter specific measuresF(max) 1262282285304332352372G 157185198196262286399H 288325359383485533670I4345164975977918429801Possible to reduce dimension F by min. 59 mm for all pump models. For smaller models it will be possible to reduce dimension F even further.Motor range (IEC)IEC112IEC132IEC90-IEC132IEC160IEC160IEC180IEC160IEC180IEC200Note! Dimensional data are based on 2 pole, ABB motors.ConnectionsM22121211221Union ISO(IDF)M12121212121M22121212121Union DIN/ISO M12530303030M22230252730Union SMS M12435242435M22024242435Union (BS)RJT M12732272732M22727272232Union DS M12424242424 M22024242124J1* 63.5 / 2.5"101.6 / 4"76.1 / 3"76.1 / 3"101.6 / 4"J2*51 / 2"76.1 / 3"63.5 / 2.5"63.5 / 2.5"101.6 / 4"*Note! Other dimensions available on request.ESE00268/9Flow chart3002-0053H (m)807060504030201020A = LKHI - 40 B = LKHI - 35C = LKHI - 60D = LKHI - 25E = LKHI - 50F = LKHI - 45G = LKHI - 20 H = LKHI - 10I = LKHI - 15406080100120140160180200220240260Q (m 3/h)ABECDGFIHOptions •Impeller with reduced diameter.•Flushed shaft seal.•Rotating seal face of Silicon Carbide.•Product wetted elastomers NBR or FPM.•Product wetted surface finish mechanically polished to Ra ≤ 0.8 μm.•Surface finish measurement with certificate (Ra ≤ 0.8 μm).•Adjustable pads.•Motor for other voltage and/or frequency.OrderingPlease state the following when ordering:•Pump size.•Pressure.•Connections.•Impeller diameter.•Motor size.•Single or flushed shaft seal.•Optional extras.Note! The curves for LKHI are the same as those for LKH.- For further details, see also Instruction Manual,ESE00700.This document and its contents are subject to copyrights and other intellectual property rights owned by Alfa Laval Corporate AB. No part of this document may be copied, re-produced or transmitted in any form or by any means, or for any purpose, without Alfa Laval Corporate AB’s prior express written permission. Information and services provided in this document are made as a benefit and service to the user, and no representations or warranties are made about the accuracy or suitability of this information and these services for any purpose. All rights are reserved.200006090-1-EN-GB© Alfa Laval Corporate AB How to contact Alfa LavalUp-to-date Alfa Laval contact details for all countries are always availableon our website at 。
Alfa laval 阿法拉伐分油机说明工作原理详解S-type Chapter4, bowl function
• If back pressure increased?
– Oil level inwards – Interface outwards – Water level inwards – Paring tube inwards
• If back pressure decreased?
Oil/water back pressure, tube position, Appendix 4
• Water paring chamber
– Low oil back pressure
– gives a large diameter water ring
Chapter 4. bowl function
– Displacement volume based on calibration of water flow at first start-up.
Chapter 4. bowl function
Inside the bowl at discharge -4
• Displacement continues • Paring tube moves in
Chapter 4. bowl function
question
• Which other separator for
Marine and Diesel use has the oil paring disc inside the top of the disc stack?
MSPX
Chapter 4. bowl function
Inside the bowl at discharge -6
宝辰岭轮设备明细表(轮机.)
2011
29 燃油供给泵 ACE 032N3 NTBP
产品编号 11156206-1 产品 编号1156206-2 系列号 1156207 系列号 1156208 系列号 1156209
2011.7
30 燃油循环泵 ACE 038N3 NTBP
工作压力0.6MPA，排量 2台 7.73m3/h,4.6kw,3500rpm 工作压力0.6MPA，排量1.8m3/h, 1.0kw, 3500rpm
2011.11
6L16/24
缸径 160mm 额定功率 660KW
冲程
240mm
编号 编号 编号
12013 12014 12015 镇江中船设备有限公司 2011.12
转速 1200rpm
1
发电原动机
3台
最大爆发压力17MPa
发火顺序 1-2-4-6-5-3 第 4 页，共 30 页
宝辰岭轮设备明细表
2011.11
31 应急柴油泵 ACE 025N3 NVBP
1台
2011.11
32
供油单元加 SH22 1280 热器
（管侧/壳侧）介质（蒸汽/油） 压力（16bar/16bar） 2台 温度（240℃/0-24℃） 容量（14L/25L）
编号1107317 编号1107318
Alfa Laval S.P.A
产品编号 B2-946
威斯达冷却技术（苏 州）有限公司
2011
南通东方船用设备有限 公司
2012.4
19
主机缸套水 HJ40-2M 预加热泵
管腔 0.33MPa 换热面积 3.0㎡ 进出口温度 36/71℃ 排量 9m³ 扬程 30M 转速 1台 3550rpm 压力0.85MPA 功率2.2kw 2台 1台 换热面积162.5㎡ 工作压力6.0MPa 工作温度max/min 95/0℃
Alfa Laval 工业用线垫片框式换热器 M15, TL10, T15, TL15, T20,
Lit. Code200000418-6-ZH-CN使用说明书中文由...出版阿法拉伐 Lund AB箱74参观：Rudeboksvägen 1226 55 Lund, 瑞典+46 46 36 65 00+46 46 30 50 90******************The original instructions are in English© Alfa Laval Corporate AB 2021-04本文件及其内容受阿法拉伐集团公司拥有的著作权及其他知识产权权利的保护。
未经阿法拉伐集团公司的事先明确书面许可，任何人不得以任何形式或通过任何方式，或出于任何目的，复制、重新制作或传输本文件的任何内容。
本文件所提供的信息和服务仅为用户提供便利和服务，对该信息和服务的准确性和适用性不做出于任何目的的陈述或保证。
保留所有权利。
EnglishDownload local language versions of this instruction manual from /gphe-manuals or use the QR codeбългарскиИзтеглете версиите на това ръководство заупотреба на местния език от / gphe-manuals или използвайте QR кода.ČeskýStáhněte si místní jazykovou verzi tohoto návodu k obsluze z /gphe-manuals nebo použijte QR kód.DanskHent lokale sprogversioner af denne brugervejledning på /gphe-manuals eller brug QR-koden.DeutschSie können die landessprachlichen Versionen dieses Handbuch von der Website /gphe-manuals oder über den QR-Code herunterladen.ελληνικάΠραγματοποιήστε λήψη εκδόσεων του παρόντοςεγχειριδίου οδηγιών σε τοπική γλώσσα από το/gphe-manuals ή χρησιμοποιήστετον κωδικό QR.EspañolDescárguese la versión de este Manual de instrucciones en su idioma local desde/gphe-manualso utilice el código QR.EestiSelle kasutusjuhendi kohaliku keele versiooni saate alla laadida lingilt /gphe-manuals või kasutades QR-koodi.SuomalainenLaitaa tämän käyttöohjeen suomenkielinen versio osoitteesta /gphe-manuals tai QR-koodilla.FrançaisTéléchargez des versions de ce manuel d’instructions en différentes langues sur /gphe-manuals ou utilisez le code QR.HrvatskiPreuzmite lokalne verzije jezika ovog korisničkog priručnika na poveznici /gphe-manuals ili upotrijebite QR kod.MagyarAz Ön nyelvére lefordított használati útmutatótletöltheti a /gphe-manuals weboldalról, vagy használja a QR-kódot.ItalianoScarica la versione in lingua locale del manuale di istruzioni da /gphe-manuals oppure utilizza il codice QR.日本の/gphe-manuals からご自分の言語の取扱説明書をダウンロードするか、QRコードをお使いください。
ALFALAVALS系列净油机工作原理简述及典型故障分析（五篇范文）
ALFALAVALS系列净油机工作原理简述及典型故障分析（五篇范文）第一篇：ALFA LAVAL S系列净油机工作原理简述及典型故障分析ALFA LAVAL S系列净油机工作原理简述及典型故障分析作者：耿、李1.S系列净油机的产生背景：具有120多年历史的ALFA LAVAL公司在自己的业务领域内一直占据着全球领先的市场地位，其关键的三大核心技术之一——离心分离技术更是一直走在行业的前列，其产品广泛应用于海运、电力等行业的燃油、润滑油处理。
随着燃油加工技术的提高和经济性的要求，船舶实际补给的燃油质量越来越差，其比重接近甚至达到了传统净油机的处理极限值：991 kg/m³@15℃。
我们知道，对于比重不同的燃油，传统净油机必须选用正确尺寸的比重环来获得合适的油水界面位置才能达到良好的分离效果，而随着燃油比重的增加，仅靠改变比重环尺寸调节界面位置就愈加困难，因为影响界面位置的因素除了密度外，还有燃油黏度、流量和温度等。
当燃油比重超过960 kg/m³时，界面位置对上述参数的敏感度就大大增加（如图：1）。
上述任何因素的扰动都可能使界面偏离正常位置，实际上净油机这时已经难以保证有效净化了。
因此传统净油机在处理这部分燃油时显得力不从心，从而使高密度燃油的使用受到了限制。
在这种情况下，基于ALCAP技术（ALCAP的说明见附注）开发的，拥有多项专利技术和最新设计理念的ALFA LAVAL S系列净油机应运而生，该机型是ALFA LAVAL 公司新开发的可用于燃油和润滑油净化的全自动单级碟片式离心分离系统，是主要处理高密度燃油的新一代产品。
而专门处理润滑油和柴油等低密度油料的是在S净油机技术平台上开发的P系列净油机。
S 净油机是进入分离程序后，气动三通阀动作，油料经进口管引入分油机，（如图3）在分离筒内燃油中不同比重的成分由于高速旋转产生的离心力在水平方向产生分离。
油泥、颗粒等重质成分积累在分离筒的最边缘，其次是分离出的水，然后是净化后的燃油。
Alfa Laval 全系列衛生用泵说明书
Alfa Laval is one of the world’s largest pump suppliers, offering a fl exible portfolio of centrifugal pumps, liquid ring pumps and positive pumps.Our portfolio is the result of a combination of compre h ensive pumpknowledge and the highest standards of hygiene, trouble-free operation and a truly low cost of ownership.2Performancein good handsWorking with hygienic applications is a question of care, attentionto detail and dedication to outstanding performance. Alfa Laval hasa proven track record in delivering innovative solutions for hygienicapplications based on our core technologies of separation, heattransfer and fluid handling.Superior safety, gentle efficiency and uncompromising cleanlinessare the hallmarks of our hygienic pumps, heat exchangers, valvesand automation, tubes and fittings, and separation, filtration andtank equipment. Which is why so many customers in the food,biopharm and other demanding industries put process perfor m anceand hygiene in the capable hands of our experts, sales companiesand partners worldwide.Here you will find an overview of Alfa Laval pumps for hygienicapplications. For complete technical details and productspecification , contact your local Alfa Laval supplier or visit us at3Gentle product treatment Our centrifugal pumps are renowned for their ability to move products gently and efficiently. The integrity of your product is assured, regardless whether you choose a premium or standard-duty model. Advanced hygienic designWith emphasis on featuressuch as optimized internalgeometry and profiled o-rings,our centrifugal pumps aresuitable for CIP (cleaning-in-place) and offer exceptionallevels of hygiene. All have beentested in accordance withEHEDG requirements and areauthorized to carry the 3-Asymbol.Advanced seal designMany of our pumps share thesame mechanical shaft seal,which simplifies maintenanceand spare parts inventory.Combined with the quick andeasy front-loading design, thisreduces maintenance costs,increases uptime and reducesthe cost of ownership.Easy seal conversionThe external design of ourcentrifugal pumps, as wellas the seal’s construction,is designed to make sealconversion as fast and assimple as possible. Ourpremium LKH pumps can beconverted from single toflushed or double-mechani c alseals, while our standard-dutySolidC pumps can beconverted from single toflushed shaft seals.4Centrifugal pumps Alfa Laval’s centrifugal pumps are built to perform inall areas – from process quality to overall energyefficiency. In addition to gentle product handling anda wide range of hygienic features, they provide a longand trouble-free service life that ensures low cost ofownership.Our centrifugal pump series can be divided into twocategories, premium and standard-duty.Computer-designed impellersOur centrifugal pump impellers are computer-designed and hydraulically balanced for optimum performance . Both the impellers and their retaining screws (optional) are smooth, which keeps them from accumulating product and makes cleaning more effective. Efficient performanceOur centrifugal pumps havethe optimal design for thegreatest efficiency, lowestNPSH requirement and lownoise levels. This reducesenergy cost, lowers the risk ofcavitation and provides a safeworking environment, whichenables efficient capitaliza t ionof the process.The first category comprises our various cost-effective LKH pumps, which handle spe c ializedneeds such as evaporation, high-pressure,self-priming and high-purity applica t ions. Thesecond focuses on initial cost, which includesour optimized SolidC pump series.56Premium pumpsQuiet but rugged, Alfa Laval’s LKH series of centrifugal pumps are the ultimate solution for gentle and efficient product handling. Through a combination of enlarged inlets and advanced impeller design, they offer an unobstructed product flow, very low NPSH requirements and superior hydraulic efficiency.Designed for CIP (cleaning-in-place), LKH pumps are available in capacities of up to 2200 gallons per minute (GPM) and pressures of up to 525 feet of water (227 PSI), with different versions available for specific applications.LKH performance: LKH pumps are available for capacities up to 2,200 GPM and pressures up to 525 feet of waterH (ft)T D 200-464010020030040050020040060080010001200140016001800200022002400LKH-45LKH-60LKH-70LKH-90LKH-75LKH-15LKH-5LKH-20LKH-10LKH-25LKH-35LKH-40LKH-50LKH-457LKH UltraPureLKH UltraPure pumps are high-purity pumps that meet specifications for water-for-injection (WFI) and other demanding applications. Authorized to carry the 3-A symbol, they are suitable for both CIP (cleaning-in-place), SIP (sterilization-in-place) and manual cleaning. LKH UltraPure pumps are also available with either a 20 Ra or 15 Ra finish, flushed seal kit and a comprehensive Q-doc documentation package to smooth the qualification and validation process.LKHThe LKH is a highly efficient and economical centrifugal pump range, which meets the requirements of sanitary processes for gentle product treatment, hygiene and chemical resistance. Its front-loaded design makes quick, effective maintenance possible, thereby contributing to more production time and low cost of ownership. Available in 13 sizes, the LKH features efficient drives which make it possible to optimize performance for the selected duty as well as comply with 3-A, CE and EHEDG requirements.LKH-75Designed for high flow rates with very gentle product treatment, the LKH-75 is ideally suited for high volume milk receiving required by the largest dairies. Like the entire LKH series, the LKH-75 features enlarged inlets combined with an advanced impeller design, resulting in unobstructed product flow and very low NPSH requirements. The pump has a capacity of up to 800 GPM and pressures of 180 feet of water and operates at a gentle 1800 RPM, and features low power consumption and noise emission levels. This translates to high flow rates withextremely gentle product treatment which are critical to maintain the taste and value drivers of high volume milk production.8LKH MultistageDesigned to 3-A standards and available in two, three or four-stage models, LKH Multistage pumps save space and energy by replacing up to three booster pumps in a line. Used primarily in high-pressure applications with low capacity, they deliver boost pressures up to 900 feet (390 PSI). This makes them suitable for, but not limited to, many types of filtration applications.LKH-PF High PressurePumps in the LKH-PF High Pressure series feature a reinforced pump casing and backplate, as well as high pressure internal seals and multiple heavy-duty studs. This enables them to handle inlet pressures as high as 600 PSI, making them ideal for the most demanding filtration applications. Their seals can be removed in a matter of seconds, without removal of the back plate.LKH-90The LKH-90 extends the LKH range flow rate to 2,200 GPM, making it an ideal solution for today’s high volume applications. Specifically, the LKH-90 has proven to be the pump of choice for filtration system builders. It utilizes the same front-loading seal as the LKH-75 and is available in a variety of connection types.Only one size of shaft seal is required for all LKH standard models (LKH 5–60) and SolidC (SolidC 1–4), which makes keeping the right parts in inventory simple and inexpensive. Plus, a single mechanical seal can easily be changed to SolidC 1SolidC 2SolidC 3SolidC 460504540352520155–10Frequency: 60 Hz H (ft)400Positive pumpsDesigned for low, medium and high-viscosity media, Alfa Laval positive pumps offer gentle pumping action and reliable performance which results from more than 50 years of continuous development at advanced production and R&D facilities.Our positive pump portfolio includes four ranges: SX, SRU, OptiLobe and SCPP. With its robust construction, each pump is developed for a different type of demand and meets high standards of quality and reliability. Collectively, they provide operating economy and high flexibility of use.Gentle, hygienic design With their high-precision rotors and low-shear operation, our positive pumps ensure the gentle movement of delicate products. Designed for maximum cleanability, our pumps comply with the world’s leading hygienic standards.Modular pump designModular design increasesfl exibility and component inter-changeability, reducing main-tenance time and spare partsinventory. The wide range ofsizes available enables selec-tion of the most cost-effectivesolution for your processrequirements.Universal mountingTo provide high flexi b ility whenfitting the pump into a produc-tion line, all of our positivepumps can be mounted ineither a vertical or horizontalport position.Improved drainabilityAll of our positive pumpscan be drained easily whenmounted in vertical portp osition. In the case of ourOptiLobe and SX pumps,cusps are retained in verticalconfigurations for greatere fficiency.12Easy seal retrofitThe seals of our positive pumps are designed for quick and simple upgrading. Our broad range of seals includes many seal types and configu-rations, which can be tailored to your need and application. Heavy-duty gearboxconstructionThese pumps have a cast irongearbox with heavy-duty taperroller bearings and torquel ocking assemblies for easymaintenance and highr eliability.CIP and SIPOur positive pumps are idealfor both CIP (cleaning-in-place) and SIP (sterilization-in-place) applications.Standards and approvalsAll of our positive pumps arecompliant with CE directivesand the EHEDG, 3-A andFDA hygienic standards. Inaddition, our SX and SRUpumps can meet ATEXrequirements for use inexplosive environments.1314SXThe SX is Alfa Laval’s premium positive pump and is designed for use in sensitive and ultra-clean applications. With optimized pump head geometry and multi-lobe rotors, SX pumps ensure low-shear operation with minimum pulsation. This makes them the best choice for maintaining the integrity of delicate products.SX pumps feature front-loading mechanical seals, and low-profi le rotor nut for the highest level of hygienic sealing and enhancing cleanability. Options available for mechanical and/or electro-polishing to achieve higher surface fi nishes up to 0.5 Ra as well as 3.1 material traceability.OptiLobeThe OptiLobe is Alfa Laval’s standard duty positive pump intended for general applications. Available in an optimized range with fewer options, OptiLobe pumps combine cost-effective simplicity with Alfa Laval quality and reliability. OptiLobe pumps feature a paint-free design with front-loading seals and tri-lobe rotors. They are the latest example of Alfa Laval’s leadership in innovative design and advanced manufacturing processes.SRUThe SRU is Alfa Laval’s core positive pump with extensive options, materials and ability to handle a wide range of temperatures and pressures. This makes it the ideal solution for the most demanding of applications.Among the many options are saddles and jackets for heating and cooling of the pump head, rectangular inlet for pumping high viscosity fl uids and a wide selection of standard seals, including proprietary seals to suit most applications. In addition, you can choose from tri-lobe or bi-lobe rotors depending on the application.15Pumps can be supplied as bareshaft for mounting locally in the process line or within a skid. Alternatively, Alfa Laval offers the units fully motorized using robust, reliable and effi cient geared drives, which can be designed for direct drive or for speed control.The rigid base plate ensures accurate alignment of the pump and drive and is available in stainless steel for hygienic environments.Other options include ball feet for raising the unit above the fl oor level to provide access for cleaning.MotorizationSCPPThe SCPP is a circumferential piston pump designed for transporting very low viscosity products in applica t ions that require medium to high discharge pressures. The piston design offers low shear with low pulsation and minimizes damage to product and bruising of solids.Two SCPP ranges are available: the SCPP1 specifi cally designed for quick and easy strip-clean type processes and the SCPP2 where CIP (cleaning-in-place) may be utilized.This complete portfolio of positive pumps enables Alfa Laval to offer the most effective solution, whatever the application.All you need to know ...The Alfa Laval pump handbook. Computer-Aided Selection (CAS) software.In st ru ct io ua lQ-doc.n M anManual de instrucciones l de instruccionesky 優質幫浦000000Comprehensive documentation in multiple languages.18With this foundation, we work closely with our channel partners to help companies extract the most value from raw materials, minimize waste and emissions, and deliver safe and hygienic products. Ultimately, our ambition is to help companies supply quality products to consumers at competitive prices.Alfa Laval has served as the standard bearer for the production ofh ygienic products since Gustaf de Laval invented the centrifugals eparator to separate cream from milk more than a century ago. That same ingenuity is applied to all our hygienic components and solutions that safeguard the flavour, texture and appearance of food, dairyp roducts, beer and other beverages.For the pharmaceutical, biopharm and personal care industries, ourc ontributions not only entail hygienic design and superior performance but comprehensive documentation and solutions that are easy tov alidate. Which in turn raise the quality, clean l iness and uniformityof the final products.Safeguarding hygienic applications requires entrusting your processes to the safe, competent care of a reliable partner.With Alfa Laval you are in good hands.Handling your hygienic processing needsOptimizing the performance of hygienic processes is a challenge best met with expertise. Alfa Laval expertise is the result of years of accumulated knowledge and a comprehensive research and development program.Working locally ona global scaleAlfa Laval brings you the advantages of a worldwide organization supported by a strongnetwork of 1,500 partners around the globe. This gives you a one-stop shop for everything,including quality parts and unmatched service expertise.Trustworthy serviceGuaranteed performance, reliability and hygiene come standard withevery Alfa Laval pump. Each pump is backed by the service and supportfrom our global organization and local network of distributors, systembuilders and contractors. This gives you easy access to advancedresources and specialist knowledge about hygienic components andprocesses.Investing in quality partsThere are no short cuts to quality, especially when the integrity ofhygienic processes is at stake. That is why investing in Alfa Lavalhygienic components and solu t ions ultimately pays off.Alfa Laval parts are precision-made to ensure optimal performance.Rigorous testing in our materials laboratory under actual operatingconditions ensures that each part will uphold safety, efficiency andhygiene of your processes for the long term.Unsurpassed reliabilityIt goes without saying that an investment in quality is an investment inreliability. Alfa Laval hygienic components and solutions are designedand sized right from the start. When reinforced by maintenanceprograms and Alfa Laval parts, you are able to achieve a strongtotal cost of ownership and true peace of mind.19。
“育鲲”轮主机供油单元自清滤器介绍及故障分析
摘要随着劣质燃油在船上的广泛使用，燃油的净化设备已经成为船上必须配备的设备，除了众所周知的分油机之外，燃油系统中的各个滤器也是必不可少的辅助部分。
在一个完整的船用柴油机燃油系统中有三个基本单元，分别是：燃油的加装、储存、驳运单元，燃油的净化处理单元，燃油供给单元。
这三个单元中都有滤器，依次对燃油进行过滤净化，以逐步达到主机用油的要求。
本文主要介绍了“育鲲”轮主机燃油系统中供给单元的自清滤器，它是燃油进机前的最后一道过滤，因此甚为关键。
如果过滤不当，不符合要求的燃油会损坏主机燃油喷射系统的各偶件，进而严重影响主机的性能。
首先介绍了“育鲲”轮主机燃油系统中供给单元的构成、工作过程和操作管理，再重点分析了其中自清滤器的构成和工作原理，并结合工作原理分析了其具体工作过程和维护管理。
最后针对“育鲲”轮主机燃油供给单元自清滤器出现的故障现象，依据工作原理分析了故障原因，排除故障并提出了管理中的相关建议。
关键词：主机燃油供给单元自清滤器工作原理故障建议AbstractWith the extensive use of the inferior quality fuel on board ships,fuel purification equipment must be equipped on board, in addition to well-known oil separator, each filter in the fuel system is also essential auxiliary part.There are three basic units in a complete marine diesel engine fuel system, n amely: the fuel’s loading, storage, transportation unit, fuel purification unit, fuel supply unit.These three units all have filters, which filtrate and purify the fuel in turn to gradually achieve the requirements of diesel engine.This thesis describes the automatic back-flushing filter in the “YU KUN” ship’s M/E F.O. supply unit, which is the last filtration before the fuel enters the diesel engine, so it is very critical. If the filtration is inappropriate, the fuel that does not meet the requirements will damage the coupled parts in the M/E fuel injection system, which would seriously affect the performance of the diesel engine. Firstly, introduce the constitution, working processes and operational management of the “YU KUN” ship’s M/E F.O. supply unit, then focus on the analysis of the constitution and working principle of the automatic back-flushing filter in this unit, and combined with working principle, we can analyse its specific work processes and maintenance management. Finally, in connection with fault phenomena of the automatic back-flushing filter in the “YU KUN” ship’s M/E F.O. supply unit,based on the principle we describes, we find the cause of the malfunction and give some advices for management.Keywords: M/E F.O. supply unit automatic back-flushing filter working principle malfunction recommendation目录1 前言 (1)2“育鲲”轮主机供油单元 (1)2.1 供油单元的构成和作用 (2)2.2 供油单元的工作过程 (5)2.3 供油单元的操作管理 (5)3 主机供油单元自清滤器 (6)3.1 自清滤器的构成和作用 (7)3.2 自清滤器与普通滤器的区别 (7)3.3 自清滤器的工作原理 (7)3.4 自清滤器的日常管理 (10)4 自清滤器的故障现象和处理办法 (10)4.1 故障现象 (10)4.2 故障分析 (10)4.3 故障排除 (11)4.4 管理中的建议 (12)5 总结 (12)【参考文献】 (13)致谢 (13)附录1 “育鲲”轮主机供油单元管路原理图 (14)“育鲲”轮主机供油单元自清滤器介绍及故障分析1前言燃油系统是柴油机重要的动力系统之一，它为柴油机的运行提供符合要求的燃油，可以说是柴油机的动力之源。
alfa laval 605分油机说明书7
– accept/store a new parameter value.
The ‘+’ or the ‘–’ buttons are used to change the value flashing in the display window.
Process parameters
Any comments regarding possible errors and omissions or suggestions for improvement of this publication would be gratefully appreciated.
Copies of this publication can be ordered from your local Alfa Laval company.
Use the pressure gauge situated in the air valve block to check that the air supply is correct. See the Installation System Reference booklet.
1 OPERATING
PA Purifier System
Operating Instructions
Printed Book No.
Jun 2008 1810896-02 V 6
Alfa Laval reserves the right to make changes at any time without prior notice.
Sludge Discharges (Valid for P 625/635 only) ............17 1.8.1 Background ..........................................17 1.8.2 Recommended intervals between sludge discharges................................17 1.8.3 Fuel oil cleaning ...................................18 1.8.4 Lubricating oil cleaning ........................18 1.8.5 Bowl inspection ....................................20
Alfa_laval_S型船用分油机常见故障的分析
0
引
言
Alfa- laval- S 型分油机采用 了功能强大的智 能 EPC- 50 控制系统代替了传统的 FOPX 型的 EPC - 400 控制 系统, 并 在结构上 采取了一 系列的改 进, 使得分油机在使用中更加安全简便 , 所以越来 越受到船员的欢迎。最近几年建造的船舶, 特别是 远洋船舶使用 S 型分油机的比例很高。笔者这几年 在管理 S 型分油机过程中 , 遇到了一些在传统分油 机上未曾见到的故障 , 写出来与同行探讨。
收稿日期 : 2011- 06- 12
作者简介 : 徐惠华 ( 1974- ) , 男 , 浙江衢州人 , 甲类大管轮 , E- mail: 771367016@ qq com 。
第 3期
徐惠华 : Alfa- laval- S 型船用分油机常见故障的分析
45
此时的密封水在高速转动的分油机内产生离心力 , 并通过分离筒内的导水孔分成两路进入水腔。一路 进入由固定环和操作滑环组成的密封水腔 1, 在离 心力的作用下, 密封水产生向上的水动力压头 F1, 在力 F1 的作用下操作滑环被顶起, 操作滑环上的 三个塑料堵头正好把分离筒底部 的三个泄放孔封 住, 这样分离筒底部与滑动底盘就形成了密封水腔 2; 密封水的另一路通过导 水孔进入水腔 2, 同样 在离心力的作用下, 密封水形成向上的水动力压头 F2, 在力 F2 的作用下 , 活 动底盘变形向 上运动 , 并与分离筒上盖形 成密封 , 组 成了分 离油腔。在 EPC- 50 的控 制下, SV10 打开进水 封水, 然后打 开进油阀进行分油[ 3] 。 ( 2) 分油过程 分油机在分油过程中 , 水腔 1 和水腔 2 中的密 封水会有所消耗 , 如不定时补充, 操作滑环就会失 去力 F1 的支撑而往下掉 , 从而造成活动底盘打开 排渣口, 即出现跑油现象。为了避免这种情况的发 生, EPC- 50 控制系统会控制补偿水阀 SV16 每隔 几分钟打开一秒 , 以达到对密封水的补偿作用。如 果补偿的水有过量, 多余的水将通过操作滑环上的 喷嘴在离心力的作用下排出分离筒。 ( 3) 排渣过程 分油机在一个设定的分油时间结束后需进行排 渣。在 EPC- 50 控制下 , 先关进油阀, 然后打开 SV10 进置换水赶油, 再控制开启水电磁阀 SV15 打 开五秒, 此时开启水进入由分离筒底部与操作滑环 组成的水腔 3。由于开启水流量远远大于喷嘴的泄 放量, 所以开启水很快就充满水腔 3, 在离心力的 作用下形成向下的力 F3, 且力 F3 要大于力 F1, 这 样操作滑环就向下运动 , 带动三个塑料堵头下行 , 打开了分离筒本体的三个泄放孔, 使得水腔 2 中的 密封水通过三个泄放孔排出 , 活动底盘失去力 F2 的支撑 , 在自 身弹力的作用下打 开排渣口进行排 渣。
阿尔法拉瓦尔（Alfa Laval）产品说明书
Tri-Clamp - The industry standard.Alfa Laval’s program of bends,tees and reducers are available indiameters from 1" to 6" in size.Bends, Tees & ReducersAlfa Laval constantly focuses on producing fittings with long durability, problem-free welding and assembly, and highestpossible strength. Key criteria in the manufacturing process include tight tolerances, a variety of finishes and uniform wall Alfa Laval is aware of the constantly increasing demands placed upon the quality of welding. In accordance with these demands, all our reducers meet the highest of standards. The reducers have cylindrical welding ends and are available The Right Partfor Your ApplicationAlfa Laval offers installation material in different standards so you can always find the right part, with the process quality you need, for your specific application.Sanitarywhere applicable• Sizes are available from stock are 1/2 inch to 6 inch Whatever your sanitary application,Alfa Laval is able to supply the right tube.Bio-Pharmaceutical FittingsAlfa Laval is proud to present their line of fittings designed for use in the pharmaceutical and bio-technologies industries. This line consists of parts with either Tri-Weld ends suitable for use with orbital welding equipment or self-aligning Tri-Clamp end connections. Alfa Laval offers a full line of bio-pharm fittings that are manufactured in compliance with the ASME This allows for the most accurate and consistent orbital weld result. All fittings are put through 100% visual inspection and ovality and squareness tolerances are inspected with calibrated equipment. Surface finish is inspected with a calibrated profilometer to ensure the Roughness average (Ra) maximum is not exceeded.The industry standard for quality.。
Alfa Laval 说明书
Alfa Laval reserves the right to make changes at any time without prior notice. Any comments regarding possible errors and omissions or suggestions for improvement of this publication would be gratefully appreciated. Copies of this publication can be ordered from your local Alfa Laval company. Published by: Alfa Laval Tumba AB Marine & Diesel Equipment SE - 147 80 Tumba Sweden © Copyright Alfa Laval Tumba AB 2005.阿法拉伐公司有权在任何时间变更，恕不另行通知。
任何有关可能出现的错误和遗漏或有关该刊物的改进建议意见将感激赞赏。
本刊物的副本可从网上订购当地的瑞典阿法拉伐公司。
出版日期：阿法拉伐通巴AB的东南海洋与柴油设备- 147 80通巴瑞典阿法拉伐通巴©版权所有AB的2005年。
Contents 1810572-02 1 Parameter Setting2...............................2 Installation Parameters 5..................3 Process Parameters 8..........................4 Factory Set Parameters11...............5 Sequence Diagram 24..........................5.1Separation Sequence26....................内容1810572-021参数设定 (2)2安装参数 (5)3工艺参数 (8)四厂设置参数 (11)5的序列图 (24)5.1分离序列 (26)1Parameter SettingThe parameters are set in the operator panel for the different separator systems, and for different conditions within the systems.There are three parameter types: Installation, Process, and Factory Set parameters.The parameters are initially set at installation. The process parameters can also be set as required during operation.Parameters not in use are not displayed.The parameter list in this booklet is valid for Separation Units (SU) and SA systems.General principleThe ‘ENTER’ button is used to:–enter into a parameter list–enter into a parameter–accept/store a new parameter value.The ‘+’or the ‘–’ buttons are used to change the value flashing in the display window.1参数设置参数设置在操作面板的不同的分隔系统，系统内的不同条件。
阿尔法拉瓦尔FCM LPG 燃油条件调节模块技术文档说明书
Press releaseApril 2019The Alfa Laval FCM LPG booster system excels with the new LPG-fuelled engine from MAN Energy SolutionsAs the marine industry embraces a growing range of alternative fuels, including LPG and ammonia, Alfa Laval is committed to providing the advanced fuel systems needed for engine protection and efficiency. In partnership with MAN Energy Solutions, the Alfa Laval Fuel Conditioning Module (FCM) LPG has undergone successful tests with the first two-stroke, high-pressure marine engine to use LPG as fuel – and has been evaluated for use with ammonia.The competitiveness of LPG as a fuel is increasing. Not only does LPG virtually eliminate sulphur emissions, it has a lower cost than many other fuels and is easily available worldwide. For these reasons and others, MAN Energy Solutions has developed the new LPG-fuelled MAN B&W ME-LGIP marine engine. Alfa Laval, having successfully provided fuel boosters for the first methanol-fuelled chemical tankers, was selected as the ideal partner to develop, supply and test the engine’s low-flashpoint fuel supply system (LFSS).“Given our previous work with MAN Energy Solutions in the area of low-flashpoint fuels, we were well acquainted with the specific challenges involved,” says Roberto Comelli, Global Sales Manager Fuel Conditioning Systems at Alfa Laval. “Naturally, we were eager to continue our partnership and to build on the positive experience with methanol.”A high-performance booster with cutting-edge automationThe resulting booster system, the Alfa Laval Fuel Conditioning Module (FCM) LPG, is the first proven solution to provide LPG to a high-pressure combustion engine for marine applications. Compared to methanol, LPG must be pumped at a higher supply pressure in order to avoid phase changes and to deal with a wide composition spectrum. Alfa Laval designed the system not only for robustness, but also to function optimally under the full range of process conditions.To deliver LPG at the 53 barg pressure the engine requires, the FCM LPG incorporates new pumping technology and effective high-pressure heat exchange, which are built into low-pressure and high-pressure skids. The latter of these has a filtration stage comprising two independent chambers, which allows it to be serviced with the system in continuous operation – a setup derived directly from the booster experience with methanol. Equally critical is the new automation and control system, which matches the LPG flow to fluctuating engine load without unnecessary heat input from the pumping and flashing of light fractions in the LPG.“On board, the FCM LPG will be run from the engine control room by the same people who usually deal with traditional fuels and equipment,” says Comelli. “The FCM LPG automation safeguards engine performance offers the same ease of use found in other Alfa Laval products. That built-intelligence is key to reliability, efficiency and safety.”LPG recovery for economy and moreAn additional key feature of the FCM LPG is its LPG recovery function, which provides full liquid LPG recovery and partial LPG gas recovery when the engine or fuel valve train is purged. Recovering LPG rather than fully venting it to atmosphere is more than just economical.“Legally there is nothing that now prohibits occasional venting of LPG into the atmosphere,” says Comelli. “However, the relevant regulations and international guidelines make clear that venting of hydrocarbons should be avoided whenever possible. LPG is also heavier than air and does not disperse like LNG does, so it’s important to minimize the effects of unexpected venting event.”Confirmed performance and ammonia-ready designIn tests performed in Denmark at the MAN Energy Solutions Research Centre Copenhagen, the FCM LPG prototype has been shown to meet – and even exceed – the fuel supply requirements of the MAN B&W ME-LGIP engine. Tests with the fuel valve train and a simulated engine load began in Q2 2018, followed by online tests using the facility’s 4T50ME-X prototype engine in Q1 2019.“Both sets of test results verify the booster’s ramping functions and its ability to match the output pressure to our engine’s changing load,” says René Sejer Laursen, Promotion Managerat MAN Energy Solutions. “In fact, almost no influence from the engine load can be seen, which demonstrates the effectiveness of Alfa Laval’s automation and control.”“This was a testing phase not only for the FCM LPG, but also for the ME-LGIP engine design,” says Comelli. “For Alfa Laval, it was a privilege to test the very first LPG booster system on the first two-stroke marine engine to use LPG as fuel. As we move from the prototype FCM LPG towards a final marine design, we are proud to continue our longstanding cooperation with MAN Energy Solutions in meeting the fuel needs of a changing marine industry.”Ahead, the companies even see possibilities for the FCM LPG as a booster for ammonia. “We at MAN Energy Solutions see a strong potential in the use of ammonia as fuel,” saysSejer Laursen. “The FCM LPG has already been evaluated for the purpose, and we’ve seen that it can be made compatible with ammonia for only a small investment.”A full technical paper about the Alfa Laval FCM LPG and the results achieved at the MAN test facility will be presented at the CIMAC Conference 2019, taking place in Vancouver, Canada, 10–14 June. To learn more about Alfa Laval’s approach to fuel conditioning and alternative fuels, visit /fcm_lffFor further information, please contact:Roberto ComelliGlobal Sales Manager Fuel Conditioning SystemsAlfa Laval Marine DivisionPhone: +39 039 2704 355E-mail:*****************************Camilla WallinMarketing Communication Manager, BU Marine Separation & Heat Transfer EquipmentAlfa Laval Marine DivisionPhone: +46 8 53 06 53 58E-mail:****************************/marineEditor’s notesAbout Alfa LavalAlfa Laval is a leading global provider of specialized products and engineering solutions based on its key technologies of heat transfer, separation and fluid handling.The company’s equipment, systems and services are dedicated to assisting customers in optimizing the performance of their processes. The solutions help them to heat, cool, separate and transport products in industries that produce food and beverages, chemicals and petrochemicals, pharmaceuticals, starch, sugar and ethanol.Alfa Laval’s products are also used in power plants, aboard ships, oil and gas exploration, in the mechanical engineering industry, in the mining industry and for wastewater treatment, as well as for comfort climate and refrigeration applications.Alfa Laval’s worldwide organization works closely with customers in nearly 100 countries to help them stay ahead in the global arena. Alfa Laval is listed on Nasdaq OMX, and, in 2018, posted annual sales of about SEK 40.7 billion (approx. 4.0 billion Euros). The company has about 17 200 employees.。
第二章船舶机舱辅助控制系统
三，中央冷却水温度控制系统
海水泵在自动控制方式下，在选择泵组投人运行时，如果 两台泵的容量相等，则控制装置将比较两台泵的运行时间 ，运行时间较短的泵将优先起动。ENCARD控制器自动实 现T1 、V1与冷却海水流量之间的参数匹配：避免海水泵的 频繁起停和淡水温度的大幅度振荡。如果低温淡水调节阀 控制旁通口开度V1的变化范围在0～5％之内，或者淡水温 度偏离设定值不超过0.5℃，则不需要对海水泵的流量进行 调节。增大海水流量时，系统将自动启动“冲洗”功能， 每隔2分钟顺序启动海水泵一次，冲洗沉淀在海水管路内的 污垢。“冲洗”功能可通过参数P12进行设置，P12＝0，取 消该功能。
一、电动冷却水温度控制系统的组成及基及基本工作原理 这个偏差值经比例微分作用输出一个连续变化的控 制信号送到脉冲宽度调制器，脉冲宽度调制器把PD 输出的连续变化的控制信号调制成脉冲信号。若冷 却水温度高于给定值，脉冲信号使“减少输出接触器 7”断续通电，组合开关 SW1 断续闭合。若冷却水温 度低于给定值，其脉冲信号使“增加输出接触器8”断 续通电，组合开关SW2断续闭合。 执行机构是一个三相交流伺服电机 M ，在它的轴上 经减速传动装置带动两个互成 90°的平板阀。一个 阀控制旁通淡水量；另一个阀控制淡水经过冷却器 的流量。当 SW1 断续闭合时，伺服电机 M 将断续地 正向（从操作手轮侧向电机方向看为逆时针）转动， 关小旁通阀，开大经冷却器的淡水阀，使冷却水温 度降低。
三，中央冷却水温度控制系统
2、ENCARD控制器 ENGARD控制器是一种具有比例积分控制规律的全 自动温度控制器，它由印刷电路板、固态继电器、 电源滤波器、变压器和接线端子排等组成，印刷电 路板上有8位微处理器、存储器（PROM、 EEPROM、RAM等）及输入输出接口。控制器对冷 却水温度进行比例积分（PI）定值控制，既可以自 动控制，必要时经转换也可以手动控制。控制面板 上有操作按钮、模式开关、数码显示器、电机工况 和系统报警LED。
船舶辅机理论知识考试题库及答案
船舶辅机理论知识考试题库及答案一、单选题1 .在燃油供油单元FCM的自动控制系统中,在使用重油期间,下列说法正确的是A、.温度是变化的，黏度是不变的B、.温度是不变的，黏度是变化的、C、.温度和黏度都是不变的D、.温度和黏度都是变化的答案：D2.在ALFALAVAL公司生产的燃油共有单元FCM中,AFB是什么。
A、.黏度温度测量模块B、流量计模块C、自动滤器模块D、供油泵模块答案：C3.压缩制冷装置中制冷剂由低压变为高压是以元件为分界点。
A、电磁阀B、压缩机C、膨胀阀D、蒸发压力调节阀4.锅炉转杯式喷油器可换用不同的油杯,从而A、,改变火焰形状，适应不同形状火炉B、.改善雾化质量C、.适应不同油料D、.改善喷油量答案：A5.在燃油供油单元FCM的自动控制系统的控制器EPC~50B采用EVT~20C黏度传感器,处了黏度检测外,还有使用作为来补偿黏度测量的误差。
A、.PT1O∕温度检测B、PT1OO/温度检测C、PT1OO/零点校正D、热敏电阻/零点校正答案：B6.在燃油供油单元FCM的自动控系统中，当EPC-50B控制器操作面板上选择油泵工作模式为EPC时,其内部参数Pr=2表示.A、.1号泵运行,2号泵备用B、2号泵运行,1号泵备用C、.1号泵运行,2号泵停止D、2号泵运行,1号泵停止7.在大型油船辅锅炉的控制系统中,采用双冲水位调节器的目的是.A、.实现水位的定值控制B、实现给水压差的定值控制C、.克服蒸汽压力变化对水位的影响D、克服蒸汽流量变化对水位的影响答案：D8.E VT20黏度传感器电路板进行自检时,如果数码显示管显示8表明。
A、. 5V电源故障,电源下降到4. 65V以下B、.外部输入/输出电路测试失败C、J5V电源故障，电源下降到13VD、,软件故障答案：A9.在ALFALAVAL公司生产的燃油供油单元FCM中，控制器EPC-50B操作面板右面有四个按钮和对应的状态指示灯,上面第二个是 OA、.启动/停止按钮B、,柴油/重油转换按钮C、.过程信息按钮D、.报警复位按钮答案：B10.烟管锅炉的蒸发受热面不包括 oB、针形管C、烟管D、烟箱答案：D11.在ALFALAVAL公司生产的燃油共有单元FCM中，FTB是什么。
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Alfa Laval 燃油供油单元简介
燃油供油单元采用的是瑞典Alfa Laval Tumba AB公司生产的FCM 1000/2000 Fuel Conditioning System、该装置是由EPC50B 控制屏(EPC50B Operators Panel)、双联供给油泵(Supply pumps)安全、阀(Pressure control valve) 、除气筒(Mixing tube with deaeration function) 、双联循环油泵(Circulation pumps) 、加热器(Heaters) 、自清滤器(Automatic/Manual filters) 、粘度控制单元(Viscorator) 、以及压力传感器(Pressure transmitter)和温度传感器(Temperayure sensor)等组成。
燃料油(或柴油)由燃油日用柜(或柴油日用柜)经三通转换阀进入双联滤器至供给泵,由供给泵供至除气筒,双联供给泵进出口管上安装一压力控制阀即安全阀,该阀在主机慢车或停车时起作用,确保供给油泵出口压力在安全范围内; 除气筒上部安装有一由液位控制的自动除气阀,当除气筒内气体达到一定量时液位浮子动作,自动除气电磁阀打开,除气筒内气体经由除气阀排至燃油日用柜,且当自动除气阀动作超过120秒时将发出警报。
燃油经除气筒至循环泵后进入由粘度控制的雾化加热器,加热温度由使用的燃油品质决定,通常#180燃料油粘度设定为11cSt,加热温度在130℃左右;#380燃料油粘度设定为14-15cSt,加热温度在145℃左右。
经过雾化加热后的燃油进入燃油自清滤器,该自清滤器为双联自清滤器,通过手动三通阀转换来选择使用A组或B组,同时在控制屏上将自清滤器选择开关置A组或B组(自清滤器转动马达选择开关),这时自清滤器开始投入使用;该装置安装有一压差报警器,当滤器进出口压差达到设定值（0.08Mpa）时自清滤器将会自动排放一次,同时发出警报,该自动泄放装置还可以遥控手动泄放;通常自清滤器设定为每小时自动泄放一次,另外自清滤器自动泄放阀还装有一旁通手动泄放阀,当自动泄放阀故障时可通过该旁通阀实现人工泄放.使用过程中每天应对自清滤器进行检查,遥控手动操纵自动泄放阀检查其泄放动作的可靠
性,同时检查自清滤器压差指示器是否正常,以决定是否转用另一组自清滤器及是否对该滤器进行拆清。
经过自清滤器后的燃油分二路:一路经过主机流量计去主机,另一路则经过电机流量计进入电机;在主机进回燃油管上和电动进回燃油管上均安装有一安全阀以确保进机燃油管压力在安全范围内,安全阀开启压力可根据实际情况手动设定:根据主机燃油正常使用时压力值(0.7-0.8Mpa)开启压力设定为0.88Mpa;根据电机燃油正常使用时压力值(0.5-0.7Mpa)开启压力设定为0.83Mpa;在燃油回油管路中,流经主机和电机后的燃油经过各自的回油流量计汇合在一起,一路经阀FCV25回除气筒,另一路经阀FCV24回HFO日用柜,在通常情况下阀FCV24处在常关状况下,这样就确保在供油单元使用DO时不至于DO回油回至HFO日用柜,保证使用DO时的正常消耗。
燃油转换:
一)D.O转H.F.O
1)预热H.F.O日用柜燃油温度至85-90℃;
2)降低主机负荷,主机慢车运行;
1)在控制板上按“HFO/DO”按钮,显示器显示“Change oil mode？”;
2)在控制板上按“+”表示“YES”;
3)人工将D.O/H.F.O转换阀手柄由“DO”位转至“HFO”位;
4)同时按“+”和“-”表示退出,燃油供油单元即转入粘度控制模式;
3)控制面板上显示使用HFO,检查系统各参数是否正常;
二)H.F.O转D.O
5)在时间允许条件下循环分离DO日用柜燃油,预热油温至50℃左右;
6)降低主机负荷,主机慢车运行;
7)在控制板上按“HFO/DO”按钮,显示器显示“Change oil mode？”;
8)在控制板上按“+”表示“YES”;
9)人工将D.O/H.F.O转换阀手柄由“HFO”位转至“DO”位;
10)在控制板上同时按“+”和“-”表示退出,系统即转入粘度控制模式;
11)控制面板上显示使用DO,检查系统各参数是否正常;
从以上的转换过程来看,无论是DO转换至HFO还是HFO转换至DO均要求降低主机负荷,要求主机慢车运行;如此操作的目的主要是为了降低流经供油单元的燃油流量,减少进入供油单元转用燃油的燃油量,从而达到降低系统温度变化率的目的,确保系统在较长时间内使用混合油,使主机和电机高压油泵有较长时间适应转油后的温度变化,不至于高压油泵因转油后温度变化太大咬死,导致意外事故发生,因此该项操作过程在燃油转换过程中不可缺少,应引起重视。
20/4在给您的邮件“嘉安山燃油供油单元简介”一文中“当滤器进出口压差达到设定值（0.8Mpa）时自清滤器将会自动排放一次,同时发出警报”中的“设定值(0.8Mpa)”应更改为“设定值(0.08Mpa)”.。