52NN-K116-M4-C2A-TT

武穴黎翔機電設備有限公司，詢價：何女士

詢價：，    

詢價

詢價: 736567721,704552157

圖2.1為單回路充液閥的結構，主要由控制充液壓力上下限的先導閥和充液主閥構成，圖中的P、O、A、T分別為油泵壓力油進油口、通往下游液壓系統的出口、通往蓄能器出口及回油口。
充液閥的充液過程為:當蓄能器的壓力低于充液閥設定的下限壓力時，作用在上限單向閥閥芯3上的液壓力低于先導閥4左端彈簧8的作用力，使下限單向閥6關閉，上限單向閥3打開，蓄能器內的壓力油經先導閥芯4、節流通道Ⅱ進入主閥右腔，推動主閥芯9克服左腔壓力向左移動，逐漸降低主閥開度，P與O口間的節流作用造成P口壓力增高。隨后P口與A口間的單向閥打開，經節流口向蓄能器供液。當蓄能器壓力達到上*，作用在先導閥右端單向閥閥芯3的液壓力大于左端彈簧壓力，下限單向閥6打開，上限單向閥3關閉，主閥右腔經先導閥于T口相通泄壓，在左端壓力作用下克服右端彈簧壓力右移，P口與A口間的單向閥關閉，恢復全流量向下游系統供液，充液過程結束。

圖2.1

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