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對性能的影響比較小。只有正確設(shè)計閥門,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。閥門需要能磨料,以便大固體通過。活塞泵由于其體積大和驅(qū)動泵的曲軸重量大而很重。活塞泵表面上類似于汽車發(fā)動機(jī),簡單的單缸布
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置。然而,這樣一個簡單的泵,每轉(zhuǎn)輸送一個液體脈沖,會向系統(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氣缸和活塞來平滑流體輸送,并且在設(shè)計多氣缸泵時比較的,這種泵比較緊湊。液壓活塞泵采油是利用地面設(shè)備提供高壓動力流體,通過地下管道注入,操縱活塞泵往復(fù)運(yùn)動來增加原油的方法。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