DR10DP3-4X/150YM力士樂減壓閥

DR10DP3-4X/150YM德國力士樂減壓閥

減壓閥是通過調(diào)節(jié)，將進(jìn)口壓力減至某一需要的出口壓力，并依靠介質(zhì)本身的能量，使出口壓力自動(dòng)保持穩(wěn)定的閥門。從流體力學(xué)的觀點(diǎn)看，減壓閥是一個(gè)局部阻力可以變化的節(jié)流元件，即通過改變節(jié)流面積，使流速及流體的動(dòng)能改變，造成不同的壓力損失，從而達(dá)到減壓的目的。然后依靠控制與調(diào)節(jié)系統(tǒng)的調(diào)節(jié)，使閥后壓力的波動(dòng)與彈簧力相平衡，使閥后壓力在一定的誤差范圍內(nèi)保持恒定。排除方法

故障現(xiàn)象：壓力波動(dòng)不穩(wěn)
ZJY46H組合式減壓閥外部結(jié)構(gòu)圖
ZJY46H組合式減壓閥外部結(jié)構(gòu)圖(3張)
定
故障分析：
1．油液中混入空氣2．阻尼孔有時(shí)堵塞
3．滑閥與閥體內(nèi)孔圓度超過規(guī)定，使閥卡住
4．彈簧變形或在滑閥中卡住，使滑閥移動(dòng)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(diào)整
故障現(xiàn)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(xiàn)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(shí)卡
排除方法：
1．泄油管必須與回油管道分開，單獨(dú)回入油箱
2．修理、更換零件。檢查油質(zhì)

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