... dashpot plunger 缓冲活塞 deep-well plunger pump 深井活塞泵; 深井柱塞泵 diameter of plunger 柱塞直径 ...
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In accordance with this circumstance, a new type of oil well pump has been designed and developed - auto - compensation soft plunger pump.
针对这种情况，设计研制了一种新型井下抽油泵——自补偿式软柱塞泵。
The utility model can efficiently prevent air locking phenomena and the eccentric wear of the plunger, increase the production quantity of raw oil and extend the service life of the oil well pump.
本实用新型可有效地防止“气锁”和 柱塞偏磨，提高原油产量和抽油泵的使用寿命。
The shortcoming of top valve housing for standard type oil well pump plunger is wear and rupture of oil flow pore wall.
标准型抽油泵柱塞上阀罩的工作缺陷是出油孔壁磨损断裂。
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