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1. 发明申请

US20140227028A1 Centrifugal Pump Connection Device for Electrical Submersible Pump Unit 审中-公开
标题翻译：电动潜水泵单元离心泵连接装置
公开(公告)号：US20140227028A1
公开(公告)日：2014-08-14
申请号：US14232854
申请日：2012-06-15
申请人： Pin Wu , Hai Zhou , Yuliang Shen , Houwei Xing , Heng Zhang , Shaohua Liu
发明人： Pin Wu , Hai Zhou , Yuliang Shen , Houwei Xing , Heng Zhang , Shaohua Liu
IPC分类号： F16D1/04
CPC分类号： F16D1/04 , F04D13/10 , F04D29/628 , F04D29/648 , F16B2200/506
摘要： The invention relates to a centrifugal pump connection device for electrical submersible pump unit; two or more centrifugal pumps are fixedly connected successively from top to bottom, the lower end of a centrifugal pump body being a connecting flange and a rabbet at the lower end of the connecting flange inserting in the upper inner bore of an adjacent centrifugal pump body, the contact surface between the connecting flange and the centrifugal pump body is a spherical surface, and the used washer of a bolt is a disc washer; the spherical surface of the connecting flange is a convex spherical surface, and the spherical surface of the upper end of the centrifugal pump body is a concave spherical surface. The device has the following benefits: it has reasonable structure, being able to improve the overall flexibility of the electrical submersible pump unit, and to increase success rate of the electrical submersible pump unit descending into horizontal well and highly-deviated well and durability of the electrical submersible pump, and to largely decrease production cost. The present invention overcomes deficiencies of plastic deformation and breakage of the unit housing and breakage of connection bolts during the process of the electrical submersible pump unit descending into the horizontal well and highly-deviated well, in which flat flange, common spring cushion and bolt are used between conventional centrifugal pumps.
摘要翻译：本发明涉及一种用于电潜泵单元的离心泵连接装置; 两个或更多个离心泵从上到下连续地固定连接，离心泵体的下端是连接法兰，在连接凸缘的下端插入相邻离心泵体的上内孔中的拉头，连接法兰与离心泵体之间的接触表面为球面，螺栓用过的垫圈为圆盘垫圈; 连接法兰的球面为凸球面，离心泵体上端的球面为凹面球面。该装置具有以下优点：具有合理的结构，能够提高电潜泵单元的整体灵活性，并提高潜水泵单元下降到水平井的成功率，并且具有高度偏差的井和耐久性电潜泵，并大大降低生产成本。本发明克服了在潜水泵单元下降到水平井和高偏差井的过程中，单元壳体的塑性变形和断裂的缺陷以及连接螺栓的断裂，其中平的凸缘，普通弹簧垫和螺栓是在常规离心泵之间使用。

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