R900423025DR 6 DP2-5X/25YV

R900423007DR 6 DP7-5X/210Y

R900422809DR 6 DP2-5X/75YMV

R900422038DR 6 DP1-5X/150YM SO101

R900421242DR 6 DP1-5X/210YM W5

R900413243DR 6 DP2-5X/210Y

R900413242DR 6 DP2-5X/150Y

R900413241DR 6 DP2-5X/75Y

R900413204DR 6 DP1-5X/75Y

R900410874ZDR 6 DP7-4X/75YM

R900410873ZDR 6 DP1-4X/75YM W13

R900410865ZDR 6 DP3-4X/75YM

R900410858ZDR 6 DP2-4X/210YM SO43

R900410806ZDR 6 DP1-4X/150YM

R900409967ZDR 6 DP1-4X/75YM

R900409965ZDR 6 DP1-4X/25YM

R900406666ZDR 6 DP2-4X/75YMJ

R900405822DR 6 DP1-5X/75YMV W5

R900404754ZDR 6 DP2-4X/150YM/12

R900404346ZDR 6 DP2-4X/25YM/12

R900403851ZDR 6 DP2-4X/150YM SO43

R900403687ZDR 6 DP2-4X/25YM W99

R900403170ZDR 6 DP2-4X/75YM W5

R900402518DR 6 DP2-5X/75YJ

R900401216ZDR 6 DP2-4X/75YM/12

R900401215ZDR 6 DP1-4X/25YM/12

R900401214DR 6 DP1-5X/210Y/12

R900400872DR 6 DP1-5X/50Y SO94

R900400663ZDR 6 DP2-4X/210YMV

R900396846DR 6 DP3-5X/150YM W5

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(tǒng)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(jié)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(jié)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(jié)流口向蓄能器供液。當蓄能器壓力達到上限時，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(tǒng)供液，充液過程結束。

圖2.14WRAE10E30-22/G24N9K31/A1V

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