電液換向閥 上海SHLIXIN立新先導(dǎo)式減壓閥
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活塞泵是否具有連續(xù)的排量?其壓力的變化和流量的增加是否會(huì)對(duì)性能的影響比較小。只有正確設(shè)計(jì)閥門(mén),活塞泵才能操縱粘性流體、高氣量和固體。與離心泵和滾柱泵相比,活塞泵的單位運(yùn)行成本比較高。機(jī)械零件易磨損,維修成本高。閥門(mén)需要能磨料,以便大固體通過(guò)?;钊糜捎谄潴w積大和驅(qū)動(dòng)泵的曲軸重量大而很重。活塞泵表面上類(lèi)似于汽車(chē)發(fā)動(dòng)機(jī),簡(jiǎn)單的單缸布
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置。然而,這樣一個(gè)簡(jiǎn)單的泵,每轉(zhuǎn)輸送一個(gè)液體脈沖,會(huì)向系統(tǒng)產(chǎn)生不可接受的大壓力脈沖。因此,好用的活塞泵采用多個(gè)氣缸和活塞來(lái)平滑流體輸送,并且在設(shè)計(jì)多氣缸泵時(shí)比較的,這種泵比較緊湊。液壓活塞泵采油是利用地面設(shè)備提供高壓動(dòng)力流體,通過(guò)地下管道注入,操縱活塞泵往復(fù)運(yùn)動(dòng)來(lái)增加原油的方法。工作原理液壓柱塞泵采油系統(tǒng)采用兩條平行管路,一條為
電液換向閥 上海SHLIXIN立新先導(dǎo)式減壓閥