水基动力无杆抽油系统流—固耦合有限元分析  

Fluid-structure Interaction Analysis of Water-Based Power Rodless Oil Pumping System by Finite Element Method

作　　者：陕梅辰[1] 谭笑[1] 朱春梅[1] 马超[1] 智玉杰 

机构地区：[1]北京信息科技大学机电工程学院,北京100192 [2]中国石油集团工程设计有限责任公司北京分公司,北京100085

出　　处：《机械工程师》2014年第2期78-80,共3页Mechanical Engineer

基　　金：北京市自然科学基金资助项目(4122029);北京市教委面上项目(SQKM201211232021);人才强教深化计划--学术创新团队项目(HR201106132);北京市教委重点项目(KZ201211232039)

摘　　要：水基动力无杆抽油系统是一个全新的抽油系统,系统受力变形是失效的主要因素之一,因此对此新型系统进行受力分析非常有意义,有助于找到系统的薄弱环节。因此针对系统的动力缸,基于流体动力学理论与流固耦合理论,运用有限元分析方法进行了系统不同压力和流速下的结构应力分析。结果表明:系统最大应力处与流体最大液压冲击处不重合,改变压力和流速都会对最大应力产生影响,且应力变化具有非线性性。研究得到了动力缸最大应力变化规律,这有利于进一步开展系统故障分析,并对系统优化设计有理论意义和实际价值。The new water power based rod-less pumping system is a newly system. The deformation under the stress is a main failure of this system. II is very meaningful to take foree analysis of this new system which can help to find the weak link of systm. For this purpose, it took the power cylinder of pumping system as example. Based on the fluid dynamics theory and the fluid-structure interaction fundamentals, the current research about t＇oree attalvsis of power cylinder is carried out using the finite element method. During the process, the stress analysis under different ~alues of pressure and velocity areconlinued. The rest, Its show thai the maximum stress an（] the maximum hydraulic impaet don＇t appear at same place, also the pressure and the velocity affect nonlinear maximum stresses. This research obtains the maximum stress curves, and the result is useful for the system failure diagnosis. It can also give the thecreical significanee and the practical value to system＇s nptimal design.

关 键 词：水基动力无杆抽油机 流-固耦合 应力分析 

分 类 号：TE933[石油与天然气工程—石油机械设备]