3DREME16P-7X/200YG24K31A1V德國力士樂減壓閥
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減壓閥是通過調節，將進口壓力減至某一需要的出口壓力，并依靠介質本身的能量，使出口壓力自動保持穩定的閥門。從流體力學的觀點看，減壓閥是一個局部阻力可以變化的節流元件，即通過改變節流面積，使流速及流體的動能改變，造成不同的壓力損失，從而達到減壓的目的。然后依靠控制與調節系統的調節，使閥后壓力的波動與彈簧力相平衡，使閥后壓力在一定的誤差范圍內保持恒定。排除方法
故障現象：壓力波動不穩
ZJY46H組合式減壓閥外部結構圖
ZJY46H組合式減壓閥外部結構圖(3張)
定
故障分析：
1．油液中混入空氣2．阻尼孔有時堵塞
3．滑閥與閥體內孔圓度超過規定，使閥卡住
4．彈簧變形或在滑閥中卡住，使滑閥移動困難或彈簧太軟
5．鋼球不圓，鋼球與閥座配合不好或錐閥安裝不正確
排除方法：
1．排除油中空氣
2．清理阻尼孔
3．修研閥孔及滑閥
4．更換彈簧
5．更換鋼球或拆開錐閥調整
故障現象：二次壓力升不高
故障分析：
1．外泄漏
2．錐閥與閥座接觸不良
排除方法：
1．更換密封件、緊固螺釘，并保證力矩均力
2．修理或更換
故障現象：不起減壓力作用
故障分析：
1．泄油口不通；泄油管與回油管相連，并有回油壓力
2．主閥芯在全開位置時卡
排除方法：
1．泄油管必須與回油管道分開，單獨回入油箱
2．修理、更換零件。檢查油質
