a 2、启机前检查各阀门:泵进口阀门是否全部打开,平衡管阀门、平衡管压力阀门是否打开,将泵轴承、盘根盒的冷却水阀门打开,并控制好流量,检查泵出口阀门是否关闭,泵回流阀门是否关闭,打开泵出口放空阀门,将泵内空气放净,随后立即关闭。[translate]
盘根盒 1. Aiming at the problems of short working life ofsealing deviceon pumping wells,a new and practical packing device,was developed,which has feature of maintaining clamping force in a relative long period and self-contacting the rod. ...
套管头填料盒 6) dresser coupling 一种为联接平头管子用的带盘根套筒 补充资料:M132a1式车载喷火器 m132a1式车载喷火器 产品名称: m132a1_式车载喷火器 m132a1 self-propelled flamethrower 生产单位: 美国埃基伍德兵工厂 edgewood arsenal, us 现状: 装备 ...
盘根盒式套管头 2) packing 盘根 1. Thepackingsealing performance of the well head is closely related with the contact pressure,size and distribution in the sucker rod system,so it is important to study the rules of the contact pressure in the sealed face. ...