一,、調(diào)節(jié)可以是連續(xù),、無(wú)級(jí)的，也可以在液壓系統(tǒng)工作過程中---車地進(jìn)行,。
二,、通過改變排量實(shí)現(xiàn)調(diào)速成為容積調(diào)速，這種方法和另一種所謂的節(jié)-速相比,，功率損失小,，避免了系統(tǒng)-，很適合大功率系統(tǒng),。
三,、容積式泵剛性的壓力-流量特性對(duì)液壓傳動(dòng)雖然是很-的，但是往往和流量調(diào)節(jié)的要求有矛盾,，因而有---將容積式泵的原始?jí)毫?流量特性加以改造,。這就是變量調(diào)節(jié)機(jī)構(gòu)的任務(wù)。
四,、威格士葉片泵中推動(dòng)變量機(jī)構(gòu)動(dòng)作的動(dòng)力源及控制方式是多種多樣的,，但大體上可以分層兩類：
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1、一類是由外力或外部信號(hào)對(duì)變量機(jī)構(gòu)進(jìn)行直接調(diào)節(jié)或控制；
2,、另一類是用泵本身的流量,、壓力、功率等工作參數(shù)作為信號(hào),，通過改變和控制泵的排量,，實(shí)現(xiàn)對(duì)其流量、壓力,、功率的反饋控制,，進(jìn)行自動(dòng)調(diào)節(jié)。
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威格士葉片泵管道格局設(shè)計(jì)不合理引起漏油的六大解決方案方法
1,、盡量減少管接頭的數(shù)量,，便減少了威格士葉片泵漏油處。
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2,、在盡量縮短威格士葉片泵管路長(zhǎng)度的同時(shí)可減少管路壓力損失和振動(dòng)等,，要采取避免因溫升產(chǎn)生的管路熱伸長(zhǎng)而拉斷、拉裂管路,，并注意接頭部位的,。
3、和軟管一樣,，在靠近接頭的部位需要有一段直線部分,。
4、彎曲長(zhǎng)度要適量,，不能斜交,。
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5、 防止威格士葉片泵系統(tǒng)液壓沖擊帶來(lái)的泄漏,。產(chǎn)生液壓沖擊時(shí),，會(huì)導(dǎo)致接頭螺母松動(dòng)而產(chǎn)生漏油。
6,、此時(shí),，一方面應(yīng)重新擰緊接頭螺母,，另一方面要找出產(chǎn)生液壓沖擊的原因并設(shè)法予以防止,。例如設(shè)置蓄能器等吸振，采用緩沖閥等緩沖組件消振等,。
7,、威格士葉片泵負(fù)壓產(chǎn)生的泄漏。對(duì)瞬時(shí)流速大于10m/s的管路,，均可能產(chǎn)生瞬間負(fù)壓(真空)現(xiàn)象,，如果接頭沒有采用防止負(fù)壓產(chǎn)生的密封結(jié)構(gòu)形式，
負(fù)壓產(chǎn)生時(shí)會(huì)吸走威格士葉片泵內(nèi)的o形密封圈，壓力上來(lái)時(shí)因無(wú)o形密封圈而產(chǎn)生泄漏,。
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