| 详细介绍：
3DREM16P-7X/200YG24K4V德国力士乐减压阀
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R900972992 DREM 20-5X/315YG24NK4M
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R900972230 DREE 20-5X/315YG24K31M
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减压阀是通过调节，将进口压力减至某一需要的出口压力，并依靠介质本身的能量，使出口压力自动保持稳定的阀门。从流体力学的观点看，减压阀是一个局部阻力可以变化的节流元件，即通过改变节流面积，使流速及流体的动能改变，造成不同的压力损失，从而达到减压的目的。然后依靠控制与调节系统的调节，使阀后压力的波动与弹簧力相平衡，使阀后压力在一定的误差范围内保持恒定。排除方法
故障现象：压力波动不稳
ZJY46H组合式减压阀外部结构图
ZJY46H组合式减压阀外部结构图(3张)
定
故障分析：
1．油液中混入空气2．阻尼孔有时堵塞
3．滑阀与阀体内孔圆度超过规定，使阀卡住
4．弹簧变形或在滑阀中卡住，使滑阀移动困难或弹簧太软
5．钢球不圆，钢球与阀座配合不好或锥阀安装不正确
排除方法：
1．排除油中空气
2．清理阻尼孔
3．修研阀孔及滑阀
4．更换弹簧
5．更换钢球或拆开锥阀调整
故障现象：二次压力升不高
故障分析：
1．外泄漏
2．锥阀与阀座接触不良
排除方法：
1．更换密封件、紧固螺钉，并保证力矩均力
2．修理或更换
故障现象：不起减压力作用
故障分析：
1．泄油口不通；泄油管与回油管相连，并有回油压力
2．主阀芯在全开位置时卡
排除方法：
1．泄油管必须与回油管道分开，单独回入油箱
2．修理、更换零件。检查油质
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