1) anti-plugging check valve
防堵单流阀
1.
Development of anti-plugging check valve on ESP;
电动潜油离心泵防堵单流阀的研制
2) valve to guard against block
防堵阀门
1.
The design of sand pump valve to guard against block;
砂泵防堵阀门的设计探讨
3) clog-proof sampling valve
防堵取样阀
1.
In order to solve this problem, this paper introduces a clog- proof sampling valve, which is suitable to the sampling of various fluid bodies.
生产中取样阀易堵塞是阻碍顺利取样和及时化验分析的主要因素,为解决这一问题,介绍了一种防堵取样阀,它适合于对各种流体的取样。
4) To seal off(gases)by a trap.
用防气阀堵住
5) converter backflow check valve
变矩器防倒流单向阀
6) ball-and-seat
单流阀
1.
To solve the problem of setting of hydraulic packers in horizontal holes,a ball-and-seat and a setting ball plug is designed for two setting technologies respectively.
针对水平井液压封隔器不能实现坐封 ,采用盲孔球座不但不能洗井 ,还会在打压过程于油管内形成气塞 ,影响坐封效果 ;采用盲孔球座和分流开关组合方式又存在水击和不能洗井的问题 ,提出了单流阀坐封球座和坐封球塞 2种水平井液压封隔器坐封工艺 ,并研究设计了单流阀球座和坐封球塞。
补充资料：防堵
1.防备阻遏。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条