螺杆泵漏失机理研究  

Research on slippage mechanism of progressing cavity pump

作　　者：操建平[1] 孟庆昆[1] 高圣平[2] 王向东[1] 胡贵[1] 

机构地区：[1]中国石油勘探开发研究院工程技术研究所,北京100083 [2]石油工业标准化研究所,北京100083

出　　处：《机械设计与制造》2012年第4期153-155,共3页Machinery Design & Manufacture

基　　金：中国石油天然气股份有限公司重点项目"采油采气新技术新装备的研究与应用"(06-01B-03-01)

摘　　要：讨论了腔室内压力、压差和液压作用对螺杆泵橡胶衬套的影响,提出一种新的解释螺杆泵漏失的机理。结果表明:腔室内压力会使橡胶衬套产生压缩变形,导致漏失;压差会使橡胶从高压区向低压区挤动,在一定范围内,反而增强了密封性能;腔室液压力对转子产生的力和力矩会导致转子产生一定的偏移,这也会间接产生橡胶衬套的变形,从而导致漏失。螺杆泵是在上述三者的共同作用下产生漏失的。同时提出一种改进方法,还比较了等壁厚螺杆泵和常规螺杆泵的密封性能。Inner pressure,differential pressure and the influence of hydraulic pressure at the rotor which will affect the rubber are discussed,a new mechanism for the slippage of PCP is presented.The result shows that inner pressure will cause deformation of rubber,it lead to slippage;differential pressure will cause movement of rubber from the higher pressure region to the lower pressure region,it lead to improvement of the sealing performance;the hydraulic pressure that will cause force and moment of force on the rotor will indirectly result in slippage.The slippage is caused by affect of the three factors above.An improved method is proposed,and there is the comparison between the conventional PCP and the uniform-thickness PCP.

关 键 词：螺杆泵 漏失 密封 等壁厚螺杆泵 橡胶衬套 

分 类 号：TH16[机械工程—机械制造及自动化] TE933[石油与天然气工程—石油机械设备]