液压阀符号大全()

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液压阀图标符号

液压泵单向定量液压单向旋转、单动、定双向定量液压单向变量液压单向旋转，单动，变双向变量液压液压马一般符单向定量液压单向流动，单向旋转双向定量液压单向变量液压双向变量液压摆动马双向摆动，定定量液-变量液-双向流动，双转，变排量，液压整体式传动装置单活塞单活塞（带弹简化符柱塞缸伸缩缸单活塞简化符双活塞直线运动的杆旋转运箭头可动的轴定位装锁定装弹跳机顶杆式可变行程控制弹簧控滚轮式两个方向操作单向滚人力控按钮式拉钮式拉手柄式单向踏双向踏加压或卸压控差动控内部压力控制外部压力控制溢流阀先导型溢流阀先导型电磁溢直动式比例溢先导比例溢流卸荷溢（平衡阀）双向溢减压阀先导型减压阀溢流减单向阀简化符液控单双液控单向阀或门型二位二通电磁二位三通电磁二位三通电磁二位四通电磁可调节不可调一般符节流阀单向节双单向节流阀截止阀滚轮控制节流阀（减速阀）调速阀管端在液面上管端在液面下带空气过滤器过滤器带污染指示器的过滤磁性过带旁通阀的过双筒过压力指示器）压力表（计）电接点压力表（压力压差控（压力开关）联轴器弹性联连接管控制管不带单向阀的快换接带单向阀的快换接头。

液压阀图标符

常用液压图标符号表1常用液压图形符号（摘自GB/T786.1-1993）（1）液压泵、液压马达和液压缸名称符号说明名称符号说明液压泵液压泵一般符号双作用缸不可调单向缓冲缸详细符号单向定量液压泵单向旋转、单向流动、定排量简化符号双向定量液压泵双向旋转，双向流动，定排量可调单向缓冲缸详细符号单向变量液压泵单向旋转，单向流动，变排量简化符号双向变量液压泵双向旋转，双向流动，变排量不可调双向缓冲缸详细符号液压马达液压马达一般符号简化符号单向定量液压马达单向流动，单向旋转可调双向缓冲详细符号双向定量液压马达双向流动，双向旋转，定排量缸简化符号单向变量液压马达单向流动，单向旋转，变排量伸缩缸双向变量液压马达双向流动，双向旋转，变排量压力转换器气-液转换器单程作用摆动马达双向摆动，定角度连续作用泵-马达定量液压泵-马达单向流动，单向旋转，定排量增压器单程作用变量液压泵-马达双向流动，双向旋转，变排量，外部泄油连续作用液压整体式传动装置单向旋转，变排量泵，定排量马达蓄能器蓄能器一般符号单作用缸单活塞杆缸详细符号气体隔离式简化符号重锤式单活塞杆缸（带弹簧复位）详细符号弹簧式简化符号辅助气瓶柱塞缸气罐伸缩缸能量源液压源一般符号双作用缸单活塞杆缸详细符号气压源一般符号简化符号电动机双活塞杆缸详细符号原动机电动机除外简化符号（2）机械控制装置和控制方法名称符号说明名称符号说明机械控制件直线运动的杆箭头可省略先导压力控制方法液压先导加压控制内部压力控制旋转运动的轴箭头可省略液压先导加压控制外部压力控制定位装置二级先导加压控制内部压力控制，内部泄油锁定装置*为开锁的控制方法气-液先导加压控制气压外部控制，液压内部控制，外部泄油弹跳机构电-液先导加压控制液压外部控制，内部泄油机械控制方法顶杆式液压先导卸压控制内部压力控制，内部泄油可变行程控制式外部压力控制（带遥控泄放口）弹簧控制式电-液先导控制电磁铁控制、外部压力控制，外部泄油滚轮式两个方向操作先导型压力控制阀带压力调节弹簧，外部泄油，带遥控泄放口单向滚轮式仅在一个方向上操作，箭头可省略先导型比例电磁式压力控制阀先导级由比例电磁铁控制，内部泄油人力控制方法人力控制一般符号电气控制方法单作用电磁铁电气引线可省略，斜线也可向右下方按钮式用电磁铁拉钮式单作用可调电磁操作（比例电磁铁，力马达等）按-拉式双作用可调电磁操作（力矩马达等）手柄式旋转运动电气控制装置单向踏板式反馈控制方法反馈控制一般符号双向踏板式电反馈由电位器、差动变压器等检测位置直接压力控制方法加压或卸压控制内部机械反馈如随动阀仿形控制回路等差动控制内部压力控制控制通路夺元件内部外部压力控制控制通路在元件外部（3）压力控制阀名称符号说明名称符号说明溢流阀溢流阀一般符号或直动型溢流阀减压阀先导型比例电磁式溢流减压阀先导型溢流阀定比减压阀减压比1/3先导型电磁溢流阀（常闭）定差减压阀直动式比例溢流阀顺序阀顺序阀一般符号或睦动型顺序阀先导比例溢流阀先导型顺序阀卸荷溢流阀p2＞p1时卸荷单向顺序阀（平衡阀）双向溢流阀直动式，外部泄油卸荷阀卸荷阀一般符号或直动型卸荷阀减压阀减压阀一般符号或直动型减压阀先导型电磁卸荷阀p1＞p2先导型减压阀制动阀双溢流制动阀溢流减压阀溢流油桥制动阀（4）方向控制阀名称符号说明名称符号说明单向阀单向阀详细符号换向阀二位五通液动阀简化符号（弹簧可省略）二位四通机动阀液压单向阀液控单向阀详细符号（控制压力关闭阀）三位四通电磁阀简化符号三位四通电液阀简化符号（内控外泄）详细符号（控制压力打开阀）三位六通手动阀简化符号（弹簧可省略）三位五通电磁阀双液控单向阀三位四通电液阀外控内泄（带手动应急控制装置）梭阀或门型详细符号三位四通比例阀节流型，中位正遮盖简化符号三位四通比例阀中位负遮盖换向阀二位二通电磁阀常断二位四通比例阀常通四通伺服二位三通电磁阀四通电液伺服阀二级二位三通电磁球阀带电反馈三级二位四通电磁阀（5）流量控制阀名称符号说明名称符号说明节流阀可调节流阀详细符号调速阀调速阀简化符号简化符号旁通型调速阀简化符号不可调节流阀一般符号温度补偿型调速阀简化符号单向节流阀单向调速阀简化符号双单向节流阀同步阀分流阀截止阀单向分流阀滚轮控制节流阀（减速阀）集流阀调速阀调速阀详细符号分流集流阀（6）油箱名称符号说明名称符号说明通大气式管端在液面上油箱管端在油箱底部管端在液面下带空气过滤器局部泄油或回油加压油箱或密闭油箱三条油路（7）流体调节器名称符号说明名称符号说明过滤器过滤器一般符号空气过滤器带污染指示器的过滤器温度调节器磁性过滤器冷却器冷却器一般符号带旁通阀的过滤器带冷却剂管路的冷却器双筒过滤器p1：进油p2：回油加热器一般符号（8）检测器、指示器名称符号说明名称符号说明压力检测器压力指示器流量检测器检流计（液流指示器）压力表（计）流量计电接点压力表（压力显控器）累计流量计压差控制表温度计液位计转速仪转矩仪（9）其它辅助元器件名称符号说明名称符号说明压力继电器（压力开关）详细符号压差开关一般符号传感器传感器一般符号行程开关详细符号压力传感器一般符号温度传感器联轴器联轴器一般符号放大器弹性联轴器（10）管路、管路接口和接头名称符号说明名称符号说明管路管路压力管路回油管路管路交叉管路两管路交叉不连接连接管路两管路相交连接柔性管路控制管路可表示泄油管路单向放气装置（测压接头）快换接头不带单向阀的快换接头旋转接头单通路旋转接头带单向阀的快换接头三通路旋转接头。

液压系统常用符号

换向阀
二位二通电磁阀
常断
二位四通比例阀
常通
四通伺服
二位三通电磁阀
四通电液伺服阀
二级
二位三通电磁球阀
带电反馈三级
二位四通电磁阀
（5）流量控制阀
名称
符号
说明
名称
符号
说明
节流阀
可调节流阀
详细符号
调速阀
调速阀
简化符号
简化符号
旁通型调速阀
简化符号
不可调节流阀
一般符号
温度补偿型调速阀
简化符号
单向节流阀
单向调速阀
温度计
液位计
转速仪
转矩仪
（9）其它辅助元器件
名称
符号
说明
名称
符号
说明
压力继电器（压力开关）
详细符号
压差开关
一般符号
传感器
传感器
一般符号
行程开关
详细符号
压力传感器
一般符号
温度传感器
联轴器
联轴器
一般符号
放大器
弹性联轴器
（10）管路、管路接口和接头
名称
符号
说明
名称
符号
说明
管路
管路
压力管路回油管路
管路
交叉管路
双向溢流阀
直动式，外部泄油
卸荷阀
卸荷阀
一般符号或直动型卸荷阀
减压阀
减压阀
一般符号或直动型减压阀
先导型电磁卸荷阀
p1＞p2
先导型减压阀
制动阀
双溢流制动阀
溢流减压阀
溢流油桥制动阀
（4）方向控制阀
名称
符号
说明
名称
符号

液压阀图标符号13页word文档

液压阀符号大全

液压阀符号大全（附图）
时间：2011-04-07 14:53:57 编辑：amethyst来源：世界工厂泵阀网点击数：7418 液压阀符号是对与案件本身结构和介质最直观的反应，但是，在不少工程图上都出现了液压阀符号错误的情况。

下面，世界工厂泵阀网为大家汇总了不同种类的液压阀符号大全，以供大家参考。

双液控单向阀符号
二位二通电磁阀符号
二位三通电磁阀符号
二位三通电磁球阀
二位四通电磁阀
三位五通电磁阀
三位四通电液压阀符号
三位四通比例阀
先导型压力控制阀
先导型比例电磁式压力控制阀
单作用电磁铁
双作用电磁铁
单作用可调电磁操作(比例电磁铁，力马达等)
液压先导加压控制
液压二级先导加压控制
气-液先导加压控制
电-液先导加压控制
先导型比例电磁式溢流减压阀符号
定比减压阀符号
定差减压阀符号。

《液压阀图标符号》

常用液压图标符号表1常用液压图形符号（摘自GB/T786.1-1993）（1）液压泵、液压马达和液压缸名称符号说明名称符号说明液压泵液压泵一般符号双作用缸不可调单向缓冲缸详细符号单向定量液压泵单向旋转、单向流动、定排量简化符号双向定量液压泵双向旋转，双向流动，定排量可调单向缓冲缸详细符号单向变量液压泵单向旋转，单向流动，变排量简化符号双向变量液压泵双向旋转，双向流动，变排量不可调双向缓冲缸详细符号液压马达液压马达一般符号简化符号单向定量液压马达单向流动，单向旋转可调双向缓冲缸详细符号双向定量液压马达双向流动，双向旋转，定排量简化符号单向变量液压马达单向流动，单向旋转，变排量伸缩缸双向变量液压马达双向流动，双向旋转，变排量压力转换器气-液转换器单程作用摆动马达双向摆动，定角度连续作用泵-马达定量液压泵-马达单向流动，单向旋转，定排量增压器单程作用变量液压泵-马达双向流动，双向旋转，变排量，外部泄油连续作用液压整体式传动装置单向旋转，变排量泵，定排量马达蓄能器蓄能器一般符号单作用缸单活塞杆缸详细符号气体隔离式简化符号重锤式单活塞杆缸（带弹簧复位）详细符号弹簧式简化符号辅助气瓶柱塞缸气罐伸缩缸能量源液压源一般符号双作用缸单活塞杆缸详细符号气压源一般符号简化符号电动机双活塞杆缸详细符号原动机电动机除外简化符号（2）机械控制装置和控制方法名称符号说明名称符号说明机械控制件直线运动的杆箭头可省略先导压力控制方法液压先导加压控制内部压力控制旋转运动的轴箭头可省略液压先导加压控制外部压力控制定位装置液压二级先导加压控制内部压力控制，内部泄油锁定装置*为开锁的控制方法气-液先导加压控制气压外部控制，液压内部控制，外部泄油弹跳机构电-液先导加压控制液压外部控制，内部泄油机械控制方法顶杆式液压先导卸压控制内部压力控制，内部泄油可变行程控制式外部压力控制（带遥控泄放口）弹簧控制式电-液先导控制电磁铁控制、外部压力控制，外部泄油滚轮式两个方向操作先导型压力控制阀带压力调节弹簧，外部泄油，带遥控泄放口单向滚轮式仅在一个方向上操作，箭头可省略先导型比例电磁式压力控制阀先导级由比例电磁铁控制，内部泄油人力控制方法人力控制一般符号电气控制方法单作用电磁铁电气引线可省略，斜线也可向右下方按钮式双作用电磁铁拉钮式单作用可调电磁操作（比例电磁铁，力马达等）按-拉式双作用可调电磁操作（力矩马达等）手柄式旋转运动电气控制装置单向踏板式反馈控制方法反馈控制一般符号双向踏板式电反馈由电位器、差动变压器等检测位置直接压力控制方法加压或卸压控制内部机械反馈如随动阀仿形控制回路等差动控制内部压力控制控制通路夺元件内部外部压力控制控制通路在元件外部（3）压力控制阀名称符号说明名称符号说明溢流阀溢流阀一般符号或直动型溢流阀减压阀先导型比例电磁式溢流减压阀先导型溢流阀定比减压阀减压比1/3先导型电磁溢流阀（常闭）定差减压阀直动式比例溢流阀顺序阀顺序阀一般符号或睦动型顺序阀先导比例溢流阀先导型顺序阀卸荷溢流阀p2＞p1时卸荷单向顺序阀（平衡阀）双向溢流阀直动式，外部泄油卸荷阀卸荷阀一般符号或直动型卸荷阀减压阀减压阀一般符号或直动型减压阀先导型电磁卸荷阀p1＞p2先导型减压阀制动阀双溢流制动阀溢流减压阀溢流油桥制动阀（4）方向控制阀名称符号说明名称符号说明单向阀单向阀详细符号换向阀二位五通液动阀简化符号（弹簧可省略）二位四通机动阀液压单向阀液控单向阀详细符号（控制压力关闭阀）三位四通电磁阀简化符号三位四通电液阀简化符号（内控外泄）详细符号（控制压力打开阀）三位六通手动阀简化符号（弹簧可省略）三位五通电磁阀双液控单向阀三位四通电液阀外控内泄（带手动应急控制装置）梭阀或门型详细符号三位四通比例阀节流型，中位正遮盖简化符号三位四通比例阀中位负遮盖换向阀二位二通电磁阀常断二位四通比例阀常通四通伺服二位三通电磁阀四通电液伺服阀二级二位三通电磁球阀带电反馈三级二位四通电磁阀（5）流量控制阀名称符号说明名称符号说明节流阀可调节流阀详细符号调速阀调速阀简化符号简化符号旁通型调速阀简化符号不可调节流阀一般符号温度补偿型调速阀简化符号单向节流阀单向调速阀简化符号双单向节流阀同步阀分流阀截止阀单向分流阀滚轮控制节流阀（减速阀）集流阀调速阀调速阀详细符号分流集流阀（6）油箱名称符号说明名称符号说明通大气式管端在液面上油箱管端在油箱底部管端在液面下带空气过滤器局部泄油或回油加压油箱或密闭油箱三条油路（7）流体调节器名称符号说明名称符号说明过滤器过滤器一般符号空气过滤器带污染指示器的过滤器温度调节器磁性过滤器冷却器冷却器一般符号带旁通阀的过滤器带冷却剂管路的冷却器双筒过滤器p1：进油p2：回油加热器一般符号（8）检测器、指示器名称符号说明名称符号说明压力检测器压力指示器流量检测器检流计（液流指示器）压力表（计）流量计电接点压力表（压力显控器）累计流量计压差控制表温度计液位计转速仪转矩仪（9）其它辅助元器件名称符号说明名称符号说明压力继电器（压力开关）详细符号压差开关一般符号传感器传感器一般符号行程开关详细符号压力传感器一般符号温度传感器联轴器联轴器一般符号放大器弹性联轴器（10）管路、管路接口和接头名称符号说明名称符号说明管路管路压力管路回油管路管路交叉管路两管路交叉不连接连接管路两管路相交连接柔性管路控制管路可表示泄油管路单向放气装置（测压接头）快换接头不带单向阀的快换接头旋转接头单通路旋转接头带单向阀的快三通路旋转接头换接头（注：素材和资料部分来自网络，供参考。

液压阀符号

创作编号：BG7531400019813488897SX
创作者：别如克*
一、单向阀
1 位—用方格表示，几位即几个方格
2 通—↑不通—┴、┬
箭头首尾和堵截符号与一个方格有几个交点即
为几通.
3 p.A.B.T有固定方位，p—进油口，T—回油口
A.B—与执行元件连接的工作油口
4 弹簧—W、M，画在方格两侧。

二位阀，靠弹簧的一格。

5 常态位置< (原理图中，油路应该连接在常态位置)
三位阀，中间一格。

二、机动换向阀:
三、液动换向阀：
四、电液换向阀;
五、直动式液压阀：
六、先导式减压阀：
七、插装阀：
八、插装方向阀：
压力控制插装阀：
比例溢流阀：
比例换向阀：
比例调速阀：
加热冷却器：
创作编号：BG7531400019813488897SX 创作者：别如克*
创作编号：BG7531400019813488897SX 创作者：别如克*。

液压阀符号大全

液压阀符号大全
1.溢流阀图型符号 2.减压阀图型符号
溢流阀
一般符号或直动型溢流阀
减压阀
一般符号或直动型减压阀
先导型溢流阀
先导型减压阀
先导型电磁溢流阀
（常闭）
溢流减压阀
直动式比例溢流阀
先导型比例
电磁式溢流减压阀
先导比例溢流阀
定比减压阀
减压比1/3
卸荷溢流阀
p2>p1时卸荷
定差减压阀
双向溢流阀
直动式，外部泄油
3.顺序阀图形符号4.卸荷阀图形符号
顺序阀
一般符号或直动型顺序阀
卸荷阀
一般符号或直动型卸荷阀
先导型顺序阀
先导型电磁卸荷阀
p1>p2
单向顺序阀
（平衡阀）
1.单项阀图型符号 2.பைடு நூலகம்控单向阀图型符号
单向阀
详细符号
减压阀
一般符号或直动型减压阀
单向阀
简化符号（弹簧可省略）
先导型减压阀
先导型电磁溢流阀
（常闭）
溢流减压阀
先导型比例
电磁式溢流减压阀
先导比例溢流阀
定比减压阀
减压比1/3
卸荷溢流阀
p2>p1时卸荷
定差减压阀
双向溢流阀
直动式，外部泄油
直动式比例溢流阀
先导型比例
电磁式溢流减压阀
先导比例溢流阀
定比减压阀
减压比1/3
卸荷溢流阀
p2>p1时卸荷
定差减压阀
双向溢流阀
直动式，外部泄油
1.单项阀图型符号 2.液控单向阀图型符号
单向阀
详细符号
减压阀
一般符号或直动型减压阀
单向阀

液压阀符号大全

1.溢流阀图型符号2.减压阀图型符号溢流阀一般符号或直动型溢流阀减压阀一般符号或直动型减压阀先导型溢流阀先导型减压阀先导型电磁溢流阀（常闭）溢流减压阀直动式比例溢流阀先导型比例电磁式溢流减压阀先导比例溢流阀定比减压阀减压比1/3卸荷溢流阀p2>p1时卸荷定差减压阀双向溢流阀直动式，外部泄油3.顺序阀图形符号4.卸荷阀图形符号顺序阀一般符号或直动型顺序阀卸荷阀一般符号或直动型卸荷阀先导型顺序阀先导型电磁卸荷阀p1>p2单向顺序阀（平衡阀）1.单项阀图型符号2.液控单向阀图型符号单向阀详细符号减压阀一般符号或直动型减压阀单向阀简化符号（弹簧可省略）先导型减压阀先导型电磁溢流阀（常闭）溢流减压阀直动式比例溢流阀先导型比例电磁式溢流减压阀先导比例溢流阀定比减压阀减压比1/3卸荷溢流阀p2>p1时卸荷定差减压阀双向溢流阀直动式，外部泄油1.单项阀图型符号2.液控单向阀图型符号单向阀详细符号减压阀一般符号或直动型减压阀单向阀简化符号（弹簧可省略）先导型减压阀先导型电磁溢流阀（常闭）溢流减压阀直动式比例溢流阀先导型比例电磁式溢流减压阀先导比例溢流阀定比减压阀减压比1/3卸荷溢流阀p2>p1时卸荷定差减压阀双向溢流阀直动式，外部泄油（注：文档可能无法思考全面，请浏览后下载，供参考。

）。

液压的阀门符号大全

1.溢流阀图型符号2.减压阀图型符号名称符号说明名称符号说明溢流阀一般符号或直动型溢流阀减压阀一般符号或直动型减压阀先导型溢流阀先导型减压阀先导型电磁溢流阀（常闭）溢流减压阀直动式比例溢流阀先导型比例电磁式溢流减压阀先导比例溢流阀定比减压阀减压比1/3一压力控制二方向控制卸荷溢流阀p 2>p 1时卸荷定差减压阀双向溢流阀直动式，外部泄油3.顺序阀图形符号4.卸荷阀图形符号名称符号说明名称符号说明顺序阀一般符号或直动型顺序阀卸荷阀一般符号或直动型卸荷阀先导型顺序阀先导型电磁卸荷阀p 1>p 2单向顺序阀（平衡阀）1.单项阀图型符号2.液控单向阀图型符号名称符号说明名称符号说明单向阀详细符号减压阀一般符号或直动型减压阀单向阀简化符号（弹簧可省略）先导型减压阀先导型电磁溢流阀（常闭）溢流减压阀直动式比例溢流阀先导型比例电磁式溢流减压阀先导比例溢流阀定比减压阀减压比1/3一压力控制卸荷溢流阀p 2>p 1时卸荷定差减压阀双向溢流阀直动式，外部泄油1.溢流阀图型符号2.减压阀图型符号名称符号说明名称符号说明溢流阀一般符号或直动型溢流阀减压阀一般符号或直动型减压阀先导型溢流阀先导型减压阀先导型电磁溢流阀（常闭）溢流减压阀直动式比例溢流阀先导型比例一压力控制电磁式溢流减压阀先导比例溢流阀定比减压阀减压比1/3卸荷溢流阀p 2>p 1时卸荷定差减压阀双向溢流阀直动式，外部泄油1.溢流阀图型符号2.减压阀图型符号名称符号说明名称符号说明溢流阀一般符号或直动型溢流阀减压阀一般符号或直动型减压阀先导型溢流阀先导型减压阀先导型电磁溢流阀（常闭）溢流减压阀直动式比例溢流阀先导型比例电磁式溢流减压阀先导比例溢流阀定比减压阀减压比1/3卸荷溢流阀p2>p1时卸荷定差减压阀双向溢流阀直动式，外部泄油一压力控制名称符号说明名称符号说明溢流阀一般符号或直动型溢流阀减压阀一般符号或直动型减压阀先导型溢流阀先导型减压阀先导型电磁溢流阀（常闭）溢流减压阀直动式比例溢流阀先导型比例电磁式溢流减压阀先导比例溢流阀定比减压阀减压比1/3卸荷溢流阀p2>p1时卸荷定差减压阀一压力控制双向溢流阀直动式，外部泄油1.溢流阀图型符号2.减压阀图型符号名称符号说明名称符号说明溢流阀一般符号或直动型溢流阀减压阀一般符号或直动型减压阀先导型溢流阀先导型减压阀先导型电磁溢流阀（常闭）溢流减压阀直动式比例溢流阀先导型比例电磁式溢流减一压力控制压阀先导比例溢流阀定比减压阀减压比1/3卸荷溢流阀p 2>p 1时卸荷定差减压阀双向溢流阀直动式，外部泄油1.溢流阀图型符号2.减压阀图型符号名称符号说明名称符号说明溢流阀一般符号或直动型溢流阀减压阀一般符号或直动型减压阀先导型溢流阀先导型减压阀先导型电磁溢流阀（常闭）溢流减压阀直动式比例溢流阀先导型比例电磁式溢流减压阀先导比例溢流阀定比减压阀减压比1/3卸荷溢流阀p2>p1时卸荷定差减压阀双向溢流阀直动式，外部泄油一压力控制。

液压阀符号大全

1。

溢流阀图型符号 2.减压阀图型符号名称符号说明名称符号说明溢流阀一般符号或直动型溢流阀减压阀一般符号或直动型减压阀先导型溢流阀先导型减压阀先导型电磁溢流阀（常闭）溢流减压阀直动式比例溢流阀先导型比例电磁式溢流减压阀先导比例溢流阀定比减压阀减压比1/3卸荷溢流阀p2〉p1时卸荷定差减压阀3．顺序阀图形符号4。

卸荷阀图形符号名称符号说明名称符号说明顺序阀一般符号或直动型顺序阀卸荷阀一般符号或直动型卸荷阀先导型顺序阀先导型电磁卸荷阀p1〉p2单向顺序阀（平衡阀)１.单项阀图型符号 2。

液控单向阀图型符号名称符号说明名称符号说明单向阀详细符号减压阀一般符号或直动型减压阀单向阀简化符号（弹簧可省略）先导型减压阀先导型电磁溢流阀（常闭)溢流减压阀双向溢流阀直动式，外部泄油直动式比例溢流阀先导型比例电磁式溢流减压阀先导比例溢流阀定比减压阀减压比1/3卸荷溢流阀ｐ2〉p1时卸荷定差减压阀双向溢流阀直动式,外部泄油1.单项阀图型符号2。

液控单向阀图型符号名称符号说明名称符号说明单向阀详细符号减压阀一般符号或直动型减压阀单向阀简化符号(弹簧可省略)先导型减压阀先导型电磁溢流阀(常闭)溢流减压阀直动式比例溢流阀先导型比例电磁式溢流减压阀先导比例溢流阀定比减压阀减压比１/3卸荷溢流阀p2〉p1时卸荷定差减压阀双向溢流阀直动式,外部泄油。

液压阀符号大全

液压阀符号大全
1.溢流阀图型符号 2.减压阀图型符号
溢流阀
一般符号或直动型溢流阀
减压阀
一般符号或直动型减压阀
先导型溢流阀
先导型减压阀
先导型电磁溢流阀
（常闭）
溢流减压阀
直动式比例溢流阀
先导型比例
电磁式溢流减压阀
先导比例溢流阀
定比减压阀
减压比1/3
卸荷溢流阀
p2>p1时卸荷
定差减压阀
双向溢流阀
直动式，外部泄油
先导型比例
电磁式溢流减压阀
先导比例溢流阀
定比减压阀
减压比1/3
卸荷溢流阀
p2>p1时卸荷
定差减压阀
双向溢流阀
直动式，外部泄油
直动式比例溢流阀
先导型比例
电磁式溢流减压阀
先导比例溢流阀
定比减压阀
减压比1/3
卸荷溢流阀
p2>p1时卸荷
定差减压阀
双向溢流阀
直动式，外部泄油
1.单项阀图型符号 2.液控单向阀图型符号
单向阀
详细符号
减压阀
一般符号或直动型减压阀
单向阀
简化符号（弹簧可省略）
先导型减压阀
先导型电磁溢流阀
（常闭）
溢流减压阀
直动式比例溢流阀
3.顺序阀图形符号4.卸荷阀图形符号
顺序阀
一般符号或直动型顺序阀
卸荷阀
一般符号或直动型卸荷阀
先导型顺序阀
先导型电磁卸荷阀
p1>p2
单向顺序阀
（平衡阀）
1.单项阀图型符号 2.液控单向阀图型符号
单向阀
详细符号
减符号（弹簧可省略）
先导型减压阀
先导型电磁溢流阀

液压阀符号汇总

不可调节流阀
单向节流节流阀
阀
双单向节流阀
截止阀
滚轮控制节流阀（减速
阀）
调速阀调速阀
名称
管端在液面上
通大气式管端在液面下
符号
说明
名称
详细符号
调速阀
符号
简化符号
旁通型调速阀
调速阀
一般符号
温度补偿型调速阀
单向调速阀
分流阀
单向分流阀
同步阀集流阀
详细符号
分流集流阀
（6）油箱
说明
名称
置
如随动阀仿形控制回路等
控制通路夺元件内
部
控制通路在元件外
部
（3）压力控制阀
说明
名称
先导型比
一般符号
例电磁式
或直动型
溢流减压
溢流阀减压阀
阀
定比减压阀
符号
说明减压比 1/3
先导型电磁溢流阀
（常闭）
定差减压阀
直动式比例溢流阀
顺序阀
一般符号或睦动型顺序阀
先导比例溢流阀
卸荷溢流阀
双向溢流阀
单向旋转，向流动，
变排量
可调单向缓冲缸
双向旋转，
双作用
双向流动，
缸
变排量
不可调双
向缓冲缸
一般符号
单向定量液压马达
双向定量液压马达
液压马达
单向变量液压马达
双向变量液压马达
单向流动，单向旋转
双向流动，双向旋转，
定排量
可调双向缓冲缸
单向流动，单向旋转，
变排量
伸缩缸
双向流动，压力转

液压阀符号汇总

液压阀符号汇总常用液压图形符号表1常用液压图形符号(摘自GB/T786.1-1993)(1)液压泵、液压马达和液压缸名称符号说明名称符号说明液压泵一般符号详细符号不可调单向缓冲缸单向旋转、单向定量单向流动、简化符号液压泵定排量双向旋转，双向定量液压泵双向流动，详细符号液压泵定排量可调单向缓冲缸单向旋转，单向变量单向流动，简化符号液压泵变排量双向旋转，双向变量双作用双向流动，详细符号液压泵缸变排量不可调双向缓冲缸液压马达一般符号简化符号单向定量单向流动，详细符号液压马达单向旋转可调双向缓冲缸双向流动，双向定量液压马达双向旋转，简化符号液压马达定排量单向流动，单向变量单向旋转，伸缩缸液压马达变排量双向流动，双向变量压力转气-液转双向旋转，单程作用液压马达换器换器变排量international, Unicom international market, adapted future people on city of development needs, based Yu industry support, and traffic advantage, and Yangtze River culture, and ecological civilization, advantage, established city development target: radiation absorb Yangtze River upstream chuan Yunnan Guizhou of regional center, andinternational ecological landscape culture city. 2.3.2 economic development in Yibin city, goal 2020 GDP reached 300 billion yuan, the per capita GDP reached 58000 2030 regional GDP reached 800 billion yuan, the per capita GDP reached 138000. 2020 industrial structure adjustmentin Yibin city as 9:56:35; 2030 industrial structure adjustment for the 6:47:47. Industrial output by 2020 of 510 billion yuan in 2030 and reach 1.2 trillion yuan. 2.4 of the urban population and land size 2.4.1 Yibin city, population size according to the different forecasting methods and the size of population environmental capacity check, the downtown main future population projections for the year are as follows: downtown main future population projections for the year (unit: million) forecast methods, 2020, 2030, balancing method for 130-150 table 2.4-1 170-190 ultra high speed development of relationship between economic and labour law development of 150 210 140 180 General develop 130 1.7 million people, resources and environment capacity check land population carrying capacity--280 water resources and population capacity-does not constitute a binding comprehensive prediction of ecological resources coupled--310 results of 140-180 in 2020, the actual resident population of about 1.4 million people; 2030 the actual resident population of about 1.8 million people. 2.4.2 the use of scale, Yibin city 2030 per capita index of urban construction land in the center of 100 square meters per person. Yibin city construction land standards and scale of table table 2.4-2 year population size (mass) land size (km2) land per capita ((km2/people) 2012 82.5 76.19 92.4 2020 140 140 100 2030 2030 Yibin 180 180 100 figure 2.4-1 figure 2.5 land-use planning layout of urban space in central双向摆动，摆动马达连续作用定角度单向流动，定量液压单向旋转，单程作用泵-马达定排量增压器双向流动，变量液压双向旋转，连续作用泵-马达泵-马达变排量，外部泄油单向旋转，液压整体变排量泵，式传动装蓄能器一般符号定排量马置达气体隔离详细符号式单活塞杆蓄能器缸简化符号重锤式详细符号弹簧式单活塞杆单作用缸缸(带弹簧复位)简化符号辅助气瓶柱塞缸气罐伸缩缸液压源一般符号详细符号能量源气压源一般符号单活塞杆双作用缸缸简化符号电动机international, Unicom international market, adapted future people on city of development needs, based Yu industry support, and traffic advantage, and Yangtze River culture, and ecological civilization, advantage, established city development target: radiation absorb Yangtze River upstream chuan Yunnan Guizhou of regional center, andinternational ecological landscape culture city. 2.3.2 economic development in Yibin city, goal 2020 GDP reached 300 billion yuan, the per capita GDP reached 58000 2030 regional GDP reached 800 billion yuan, the per capita GDP reached 138000. 2020 industrial structure adjustment in Yibin city as 9:56:35; 2030 industrial structure adjustment for the6:47:47. Industrial output by 2020 of 510 billion yuan in 2030 and reach 1.2 trillion yuan. 2.4 of the urban population and land size 2.4.1 Yibin city, population size according to the different forecasting methods and the size of population environmental capacity check, the downtown main future population projections for the year are as follows: downtown main future population projections for the year (unit: million) forecast methods, 2020, 2030, balancing method for 130-150 table 2.4-1 170-190 ultra high speed development of relationship between economic and labour law development of 150 210 140 180 General develop 130 1.7 million people, resources and environment capacity check land population carrying capacity--280 water resources and population capacity-does not constitute a binding comprehensive prediction of ecological resources coupled--310 results of 140-180 in 2020, the actual resident population of about 1.4 million people; 2030 the actual resident population of about 1.8 million people. 2.4.2 the use of scale, Yibin city 2030 per capita index of urban construction land in the center of 100 square meters per person. Yibin city construction land standards and scale of table table 2.4-2 year population size (mass) land size (km2) land per capita ((km2/people) 2012 82.5 76.19 92.4 2020 140 140 100 2030 2030 Yibin 180 180 100 figure 2.4-1 figure 2.5 land-use planning layout of urban space in central详细符号原动机电动机除外双活塞杆缸简化符号(2)机械控制装置和控制方法名称符号说明名称符号说明直线运动箭头可省液压先导内部压力控制的杆略加压控制旋转运动箭头可省液压先导外部压力控制的轴略加压控制液压二级内部压力控制，定位装置先导加压机械控制内部泄油控制件气-液先气压外部控制，*为开锁的锁定装置导加压控液压内部控制，控制方法制外部泄油电-液先液压外部控制，弹跳机构导加压控内部泄油制先导压内部压力控制，力控制顶杆式内部泄油方法液压先导外部压力控制卸压控制可变行程(带遥控泄放控制式口)电磁铁控制、外弹簧控制电-液先部压力控制，外机械控制式导控制部泄油方法带压力调节弹两个方向先导型压滚轮式簧，外部泄油，操作力控制阀带遥控泄放口仅在一个先导型比先导级由比例电单向滚轮方向上操例电磁式磁铁控制，内部式作，箭头可压力控制泄油省略阀international, Unicom international market, adapted future people on city of development needs, based Yu industry support, and traffic advantage, and Yangtze River culture, and ecological civilization, advantage, established city development target: radiation absorb Yangtze River upstream chuan Yunnan Guizhou of regional center, andinternational ecological landscape culture city. 2.3.2 economic development in Yibin city, goal 2020 GDP reached 300 billion yuan, the per capita GDP reached 58000 2030 regional GDP reached 800 billion yuan, the per capita GDP reached 138000. 2020 industrial structure adjustment in Yibin city as 9:56:35; 2030 industrial structure adjustment for the 6:47:47. Industrial output by 2020 of 510 billion yuan in 2030 and reach 1.2 trillion yuan. 2.4 of the urban population and land size 2.4.1 Yibin city, population size according to the different forecasting methods andthe size of population environmental capacity check, the downtown main future population projections for the year are as follows: downtown main future population projections for the year (unit: million) forecast methods, 2020, 2030, balancing method for 130-150 table 2.4-1 170-190 ultra high speed development of relationship between economic and labour law development of 150 210 140 180 General develop 130 1.7 million people, resources and environment capacity check land population carrying capacity--280 water resources and population capacity-does not constitute a binding comprehensive prediction of ecological resources coupled--310 results of 140-180 in 2020, the actual resident population of about 1.4 million people; 2030 the actual resident population of about 1.8 million people. 2.4.2 the use of scale, Yibin city 2030 per capita index of urban construction land in the center of 100 square meters per person. Yibin city construction land standards and scale of table table 2.4-2 year population size (mass) land size (km2) land per capita ((km2/people) 2012 82.5 76.19 92.4 2020 140 140 100 2030 2030 Yibin 180 180 100 figure 2.4-1 figure 2.5 land-use planning layout of urban space in central电气引线可省单作用电人力控制一般符号略，斜线也可向磁铁右下方双作用电按钮式磁铁单作用可调电磁操作(比例拉钮式电气控电磁铁，制方法力马达等)人力控制双作用可方法调电磁操按-拉式作(力矩马达等)旋转运动手柄式电气控制装置单向踏板反馈控制一般符号式由电位器、差动双向踏板电反馈变压器等检测位反馈控式置制方法加压或卸内部机械如随动阀仿形控压控制反馈制回路等差动控制直接压力控制通路控制方法内部压力夺元件内控制部控制通路外部压力在元件外控制部(3)压力控制阀名称符号说明名称符号说明international, Unicom international market, adapted future people on city of development needs, based Yu industry support, and traffic advantage, and Yangtze River culture, and ecological civilization, advantage, established city development target: radiation absorb Yangtze River upstream chuan Yunnan Guizhou of regional center, andinternational ecological landscape culture city. 2.3.2 economic development in Yibin city, goal 2020 GDP reached 300 billion yuan, the per capita GDP reached 58000 2030 regional GDP reached 800 billion yuan, the per capita GDP reached 138000. 2020 industrial structure adjustment in Yibin city as 9:56:35; 2030 industrial structure adjustment for the 6:47:47. Industrial output by 2020 of 510 billion yuan in 2030 and reach 1.2 trillion yuan. 2.4 of the urban population and land size 2.4.1 Yibin city, population size according to the different forecasting methods and the size of population environmental capacity check, the downtown main future population projections for the year are as follows: downtown mainfuture population projections for the year (unit: million) forecast methods, 2020, 2030, balancing method for 130-150 table 2.4-1 170-190 ultra high speed development of relationship between economic and labour law development of 150 210 140 180 General develop 130 1.7 million people, resources and environment capacity check land population carrying capacity--280 water resources and population capacity-does not constitute a binding comprehensive prediction of ecological resources coupled--310 results of 140-180 in 2020, the actual resident population of about 1.4 million people; 2030 the actual resident population of about 1.8 million people. 2.4.2 the use of scale, Yibin city 2030 per capita index of urban construction land in the center of 100 square meters per person. Yibin city construction land standards and scale of table table 2.4-2 year population size (mass) land size (km2) land per capita ((km2/people) 2012 82.5 76.19 92.4 2020 140 140 100 2030 2030 Yibin 180 180 100 figure 2.4-1 figure 2.5 land-use planning layout of urban space in central先导型比一般符号例电磁式溢流阀或直动型溢流减压溢流阀阀先导型溢定比减压减压比1/3 减压阀流阀阀先导型电定差减压(常闭) 磁溢流阀阀直动式比一般符号或睦动顺序阀溢流阀例溢流阀型顺序阀先导比例先导型顺顺序阀溢流阀序阀单向顺序卸荷溢流p,p时卸21阀(平衡阀荷阀) 双向溢流直动式，外一般符号或直动卸荷阀阀部泄油型卸荷阀卸荷阀一般符号先导型电减压阀或直动型p,p 12磁卸荷阀减压阀先导型减双溢流制减压阀压阀动阀制动阀溢流减压溢流油桥阀制动阀(4)方向控制阀名称符号说明名称符号说明international, Unicom international market, adapted future people on city of development needs, based Yu industry support, and traffic advantage, and Yangtze River culture, and ecological civilization, advantage, established city development target: radiation absorb Yangtze River upstream chuan Yunnan Guizhou of regional center, andinternational ecological landscape culture city. 2.3.2 economic development in Yibin city, goal 2020 GDP reached 300 billion yuan, the per capita GDP reached 58000 2030 regional GDP reached 800 billion yuan, the per capita GDP reached 138000. 2020 industrial structure adjustment in Yibin city as 9:56:35; 2030 industrial structure adjustment for the 6:47:47. Industrial output by 2020 of 510 billion yuan in 2030 and reach 1.2 trillion yuan. 2.4 of the urban population and land size 2.4.1 Yibin city, population size according to the different forecasting methods and the size of population environmental capacity check, the downtown main future population projections for the year are as follows: downtown main future population projections for the year (unit: million) forecast methods, 2020, 2030, balancing method for 130-150 table 2.4-1 170-190 ultra high speed development of relationship between economic and labour law development of 150 210 140 180 General develop 130 1.7 million people, resources and environment capacity check land population carrying capacity--280 water resources and population capacity-does not constitute a binding comprehensive prediction of ecological resources coupled--310 results of 140-180 in 2020, the actual resident population of about 1.4 million people; 2030 the actual resident population ofabout 1.8 million people. 2.4.2 the use of scale, Yibin city 2030 per capita index of urban construction land in the center of 100 square meters per person. Yibin city construction land standards and scale of table table 2.4-2 year population size (mass) land size (km2) land per capita ((km2/people) 2012 82.5 76.19 92.4 2020 140 140 100 2030 2030 Yibin 180 180 100 figure 2.4-1 figure 2.5 land-use planning layout of urban space in central二位五通详细符号液动阀单向阀单向阀简化符号二位四通(弹簧可机动阀省略)详细符号三位四通(控制压电磁阀力关闭阀)三位四通简化符号(内控简化符号电液阀外泄) 液控单向阀详细符号液压单向三位六通(控制压阀手动阀力打开阀)简化符号三位五通换向阀 (弹簧可电磁阀省略)外控内泄(带手双液控单三位四通动应急控制装向阀电液阀置)三位四通节流型，中位正详细符号比例阀遮盖梭阀或门型三位四通简化符号中位负遮盖比例阀二位四通常断比例阀二位二通换向阀电磁阀常通四通伺服international, Unicom international market, adapted future people on city of development needs, based Yu industry support, and traffic advantage, and Yangtze River culture, and ecological civilization, advantage, established city development target: radiation absorb Yangtze River upstream chuan Yunnan Guizhou of regional center, andinternational ecological landscape culture city. 2.3.2 economic development in Yibin city, goal 2020 GDP reached 300 billion yuan, theper capita GDP reached 58000 2030 regional GDP reached 800 billion yuan, the per capita GDP reached 138000. 2020 industrial structure adjustment in Yibin city as 9:56:35; 2030 industrial structure adjustment for the 6:47:47. Industrial output by 2020 of 510 billion yuan in 2030 and reach 1.2 trillion yuan. 2.4 of the urban population and land size 2.4.1 Yibin city, population size according to the different forecasting methods and the size of population environmental capacity check, the downtown main future population projections for the year are as follows: downtown main future population projections for the year (unit: million) forecast methods, 2020, 2030, balancing method for 130-150 table 2.4-1 170-190 ultra high speed development of relationship between economic and labour law development of 150 210 140 180 General develop 130 1.7 million people, resources and environment capacity check land population carrying capacity--280 water resources and population capacity-does not constitute a binding comprehensive prediction of ecological resources coupled--310 results of 140-180 in 2020, the actual resident population of about 1.4 million people; 2030 the actual resident population of about 1.8 million people. 2.4.2 the use of scale, Yibin city 2030 per capita index of urban construction land in the center of 100 square meters per person. Yibin city construction land standards and scale of table table 2.4-2 year population size (mass) land size (km2) land per capita ((km2/people) 2012 82.5 76.19 92.4 2020 140 140 100 2030 2030 Yibin 180 180 100 figure 2.4-1 figure 2.5 land-use planning layout of urban space in central二位三通二级电磁阀四通电液伺服阀二位三通带电反馈三级电磁球阀二位四通电磁阀(5)流量控制阀名称符号说明名称符号说明详细符号调速阀简化符号可调节流阀旁通型调简化符号简化符号速阀调速阀不可调节温度补偿一般符号简化符号流阀型调速阀单向节流单向调速节流阀简化符号阀阀双单向节分流阀流阀单向分流截止阀阀同步阀滚轮控制节流阀集流阀 (减速阀)分流集流调速阀调速阀详细符号阀 international, Unicominternational market, adapted future people on city of development needs, based Yu industry support, and traffic advantage, and Yangtze River culture, and ecological civilization, advantage, established city development target: radiation absorb Yangtze River upstream chuan YunnanGuizhou of regional center, and international ecological landscape culture city. 2.3.2 economic development in Yibin city, goal 2020 GDP reached 300 billion yuan, the per capita GDP reached 58000 2030 regional GDP reached 800 billion yuan, the per capita GDP reached 138000. 2020 industrial structure adjustment in Yibin city as 9:56:35; 2030industrial structure adjustment for the 6:47:47. Industrial output by 2020 of 510 billion yuan in 2030 and reach 1.2 trillion yuan. 2.4 of the urban population and land size 2.4.1 Yibin city, population size according to the different forecasting methods and the size of population environmental capacity check, the downtown main future population projections for the year are as follows: downtown main future population projections for the year (unit: million) forecast methods, 2020, 2030, balancing method for 130-150 table 2.4-1 170-190 ultra high speed development of relationship between economic and labour law development of 150 210 140 180 General develop 130 1.7 million people, resources and environment capacity check land population carrying capacity--280 water resources and population capacity-does notconstitute a binding comprehensive prediction of ecological resources coupled--310 results of 140-180 in 2020, the actual resident population of about 1.4 million people; 2030 the actual resident population of about 1.8 million people. 2.4.2 the use of scale, Yibin city 2030 per capita index of urban construction land in the center of 100 square meters per person. Yibin city construction land standards and scale of table table 2.4-2 year population size (mass) land size (km2) land percapita ((km2/people) 2012 82.5 76.19 92.4 2020 140 140 100 2030 2030 Yibin 180 180 100 figure 2.4-1 figure 2.5 land-use planning layout of urban space in central(6)油箱名称符号说明名称符号说明管端在液管端在油面上箱底部通大气式油箱管端在液带空气过局部泄油面下滤器或回油加压油箱或密闭油三条油路箱(7)流体调节器名称符号说明名称符号说明过滤器一般符号空气过滤器带污染指示器的过温度调节器滤器磁性过滤冷却器一般符号器过滤器冷却器带冷却剂带旁通阀管路的冷的过滤器却器双筒过滤p:进油 1加热器一般符号器 p:回油 2(8)检测器、指示器名称符号说明名称符号说明检流计压力指示(液流指器示器) 压力检测流量检器测器压力表流量计 (计)international, Unicom international market, adapted future people on city of development needs, based Yu industry support, and traffic advantage, and Yangtze River culture, and ecological civilization, advantage, established city development target: radiation absorb Yangtze River upstream chuan Yunnan Guizhou of regional center, andinternational ecological landscape culture city. 2.3.2 economic development in Yibin city, goal 2020 GDP reached 300 billion yuan, the per capita GDP reached 58000 2030 regional GDP reached 800 billion yuan,the per capita GDP reached 138000. 2020 industrial structure adjustment in Yibin city as 9:56:35; 2030 industrial structure adjustment for the 6:47:47. Industrial output by 2020 of 510 billion yuan in 2030 and reach 1.2 trillion yuan. 2.4 of the urban population and land size 2.4.1 Yibin city, population size according to the different forecasting methods and the size of population environmental capacity check, the downtown main future population projections for the year are as follows: downtown main future population projections for the year (unit: million) forecast methods, 2020, 2030, balancing method for 130-150 table 2.4-1 170-190 ultra high speed development of relationship between economic and labour law development of 150 210 140 180 General develop 130 1.7 million people, resources and environment capacity check land population carrying capacity--280 water resources and population capacity-does not constitute a binding comprehensive prediction of ecological resources coupled--310 results of 140-180 in 2020, the actual resident population of about 1.4 million people; 2030 the actual resident population of about 1.8 million people. 2.4.2 the use of scale, Yibin city 2030 per capita index of urban construction land in the center of 100 square meters per person. Yibin city construction land standards and scale of table table 2.4-2 year population size (mass) land size (km2) land per capita ((km2/people) 2012 82.5 76.19 92.4 2020 140 140 100 2030 2030 Yibin 180 180 100 figure 2.4-1 figure 2.5 land-use planning layout of urban space in central电接点压力表(压累计流量力显控计器)压差控制温度计表液位计转速仪转矩仪(9)其它辅助元器件名称符号说明名称符号说明详细符号压差开关压力继电器(压力开关)一般符号传感器一般符号传感器压力传感详细符号器行程开关温度传感一般符号器联轴器一般符号联轴器放大器弹性联轴器(10)管路、管路接口和接头名称符号说明名称符号说明压力管路两管路交叉不连管路交叉管路回油管路接管路管路两管路相连接管路柔性管路交连接international, Unicom international market, adapted future people on city of development needs, based Yu industry support, and traffic advantage, and Yangtze River culture, and ecological civilization, advantage, established city development target: radiation absorb Yangtze River upstream chuan Yunnan Guizhou of regional center, andinternational ecological landscape culture city. 2.3.2 economic development in Yibin city, goal 2020 GDP reached 300 billion yuan, the per capita GDP reached 58000 2030 regional GDP reached 800 billion yuan,the per capita GDP reached 138000. 2020 industrial structure adjustment in Yibin city as 9:56:35; 2030 industrial structure adjustment for the 6:47:47. Industrial output by 2020 of 510 billion yuan in 2030 and reach 1.2 trillion yuan. 2.4 of the urban population and land size 2.4.1 Yibin city, population size according to the different forecasting methods and the size of population environmental capacity check, the downtown main future population projections for the year are as follows: downtown main future population projections for the year (unit: million) forecast methods, 2020, 2030, balancing method for 130-150 table 2.4-1 170-190 ultra high speed development of relationship between economic and labour law development of 150 210 140 180 General develop 130 1.7 million people, resources and environment capacity check land population carrying capacity--280 water resources and population capacity-does not constitute a binding comprehensive prediction of ecological resources coupled--310 results of 140-180 in 2020, the actual resident population of about 1.4 million people; 2030 the actual resident population of about 1.8 million people. 2.4.2 the use of scale, Yibin city 2030 per capita index of urban construction land in the center of 100 square meters per person. Yibin city construction land standards and scale of table table 2.4-2 year population size (mass) land size (km2) land per capita ((km2/people) 2012 82.5 76.19 92.4 2020 140 140 100 2030 2030 Yibin 180 180 100 figure 2.4-1 figure 2.5 land-use planning layout of urban space in central单向放气可表示泄控制管路装置(测油管路压接头)不带单向单通路旋阀的快换转接头接头旋转接快换接头带单向阀头三通路旋的快换接转接头头international, Unicom international market, adapted future people on city of development needs, based Yu industry support, and traffic advantage, and Yangtze River culture, and ecological civilization, advantage, established city development target: radiation absorb Yangtze River upstream chuan Yunnan Guizhou of regional center, andinternational ecological landscape culture city. 2.3.2 economic development in Yibin city, goal 2020 GDP reached 300 billion yuan, the per capita GDP reached 58000 2030 regional GDP reached 800 billion yuan, the per capita GDP reached 138000. 2020 industrial structure adjustment in Yibin city as 9:56:35; 2030 industrial structure adjustment for the 6:47:47. Industrial output by 2020 of 510 billion yuan in 2030 and reach 1.2 trillion yuan. 2.4 of the urban population and land size 2.4.1 Yibin city, population size according to the different forecasting methods and the size of population environmental capacity check, the downtown main future population projections for the year are as follows: downtown main future population projections for the year (unit: million) forecast methods, 2020, 2030, balancing method for 130-150 table 2.4-1 170-190 ultra high speed development of relationship between economic and labourlaw development of 150 210 140 180 General develop 130 1.7 million people, resources and environment capacity check land population carrying capacity--280 water resources and population capacity-does not constitute a binding comprehensive prediction of ecological resources coupled--310 results of 140-180 in 2020, the actual resident population of about 1.4 million people; 2030 the actual resident population of about 1.8 million people. 2.4.2 the use of scale, Yibin city 2030 per capita index of urban construction land in the center of 100 square meters per person. Yibin city construction land standards and scale of table table 2.4-2 year population size (mass) land size (km2) land per capita ((km2/people) 2012 82.5 76.19 92.4 2020 140 140 100 2030 2030 Yibin 180 180 100 figure 2.4-1 figure 2.5 land-use planning layout of urban space in central。

液压阀图标符号

液压阀符号

外部压力控制
内部压力控制，内部泄油气压外部控制，液压内部控制，外部泄油液压外部控制，内部泄油内部压力控制，内部泄油外部压力控制（带遥控泄放口）
锁定装置
弹跳机构
弹簧控制机械控制方法两个方向操作仅在一个单向滚轮式方向上操作，箭头可省略式
电-液先导控制
电磁铁控制、外部压力控制，外部泄油带压力调节弹簧，外部泄油，带遥控泄放口先导级由比例电磁铁控制，内部泄油
转接头
三通路旋转接头
10
1
详细符号
缓冲缸简化符号
液压马达
双向定量液压马达
单向变量液压马达
伸缩缸
双向变量液压马达
压力转气-液转换换器器
单程作用
摆动马达
双向摆动，定角度单向流动，单向旋转，定排量双向流动，增压器
连续作用
定量液压泵-马达
单程作用
变量液压泵-马达泵-马达
双向旋转，变排量，外部泄油
温度传感器
联轴器联轴器弹性联轴器
一般符号放大器
（10）管路、管路接口和接头名称管路符号说明压力管路回油管路两管路相交连接可表示泄油管路管路名称交叉管路符号说明两管路交叉不连接
管路
连接管路
柔性管路单向放气装置（测压接头）单通路旋
控制管路
不带单向阀的快换快换接头接头带单向阀的快换接头旋转接头
或直动型减压阀
先导型电磁卸荷阀
p1＞p2
减压阀先导型减压阀双溢流制动阀
制动阀
5
溢流减压阀
溢流油桥制动阀