TEA063EW09B2NLWJ21 該閥的結(jié)構(gòu)主要包括帶壓力設(shè)定的先導(dǎo)控 制閥l、壓力補(bǔ)償器2和單向閥3。蓄能器充液閥的作用是*保*液壓系統(tǒng)中蓄能器的袖壓維持在所要求的范圍內(nèi)。 (1)泵由蓄能器充液狀態(tài)變?yōu)榱銐貉h(huán)狀態(tài)如圖2所示。在充液過程中,泵出油液P經(jīng)單向閥進(jìn)人蓄能器回路S ,同時(shí)壓力油通過先導(dǎo)閥的先導(dǎo)管作用在壓力補(bǔ)D3W081CNJW
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償器的背面該補(bǔ)償器節(jié)制泵的流量。隨著油液的不斷充人,直到蓄能器中的壓力克服先導(dǎo)閥的彈簧設(shè)定壓力, 先導(dǎo)閥閥芯切換+壓力補(bǔ)償器背面的控制壓力與回油口T相通,此時(shí)壓力補(bǔ)償器的閥芯切換,使P與N連通,單向閥關(guān)閉。G122-828A-017
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這時(shí),充液過程結(jié)束而泵的油液以*小的壓降通過充液閥。
(2)泵由零壓循環(huán)狀態(tài)轉(zhuǎn)為蓄能器充液狀態(tài) 當(dāng)蓄能器壓力降至下限時(shí),先導(dǎo)控制閥在彈簧力作用下切換,P經(jīng)先導(dǎo)閥與壓力補(bǔ)償器的負(fù)載信號(hào)腔連通,由于彈簧的共同作用,壓力補(bǔ)償器換向,切斷P與N回路+泵的油液再次經(jīng)單向閥進(jìn)人蓄能器回路S ,蓄能器充油,直至上一工作循環(huán) 。
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