4WRZE10E50-7X/6EG24N9K31/F1V力士樂比例閥

4WRZE10E50-7X/6EG24N9K31/F1V

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4WRZE10E50-7X/6EG24N9K31/F1V

B：節(jié)流閥閥口開度增大，動態(tài)壓差ΔP變小（即閥口對液流的節(jié)流作用將有所減弱），流動阻力的減小被負載敏感閥的滑閥所感受到，滑閥左端壓力P減小，滑閥會向左移動一段距離，此時主控制活塞缸的無桿腔的油液被接通至油箱，泵的斜盤傾角變大，輸出流量變大，直到動態(tài)壓差ΔP=P彈時，滑閥受力平衡，泵的斜盤傾角不再變化，此時泵輸出的流量與節(jié)流口進口的流量相匹配。（此過程與部分“5、電機啟動，節(jié)流閥閥口開度繼續(xù)增大的狀態(tài)”重復）


負載敏感泵是外部節(jié)流且穩(wěn)定壓差ΔP為定常值（直接由負載敏感閥的彈簧預緊力決定）。通過外部節(jié)流閥閥口開度進行泵的斜盤傾角的控制，節(jié)流閥口開度變小，泵的輸出流量變小；節(jié)流閥口開度變大，泵的輸出流量變大。
2、負載大小發(fā)生了變化（負載運動速度無變化需求時），觀察負載敏感泵的自動調節(jié)過程
A：負載壓力PL因某種原因降低，則動態(tài)壓差△P會瞬時增大，那么通過節(jié)流閥的流量也會瞬時增加（小孔流量公式），則負載敏感閥芯向右移動，斜盤傾角減小，泵出油流量減小，直至動態(tài)壓差△P再次等于P彈為止。

圖10 力士樂比例閥 武漢現(xiàn)貨
B：負載壓力PL因某種原因升高，則動態(tài)壓差△P會瞬時減小，那么通過節(jié)流閥的流量也會瞬時減小（小孔流量公式），則負載敏感閥芯向左移動，斜盤傾角增大，泵出油流量增大，直至動態(tài)壓差△P再次等于P彈為止。
4WRZE10E50-7X/6EG24N9K31/F1V