基于有限元方法的水基动力无杆抽油系统憋压现象分析  

Pump Pressure-out Phenomena Analysis of Water Power based on Rod-less Oil Pumping System by FEM

作　　者：陕梅辰[1] 朱春梅[1] 马超[1] 谭笑[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：《新技术新工艺》2014年第5期90-92,共3页New Technology & New Process

基　　金：北京市自然科学基金资助项目(4122029);北京市教委资助项目(KM201311232001);北京市教委资助项目(SQKM201311232021);人才强教深化计划--学术创新团队资助项目(HRE201106132);北京市教委重点资助项目(KZ201211232039

摘　　要：水基动力无杆抽油系统(下述简称系统)是一个全新的系统。由于要确保液压动力缸(简称动力缸)走完全程,因而在其上行程结束时会出现憋压现象,会导致动力缸失效;因此,针对系统的动力缸,基于流-固耦合理论,运用有限元分析方法进行了系统憋压分析。结果表明,憋压时产生的压力冲击会使应力发生突变,可增大10倍,极易损坏动力缸。通过研究,得到了压力曲线与应力数据,这有利于系统的故障分析,并为系统进一步优化设计提供了数据支持。The new water power based rod-less pumping system is a brand new system.To make the power cylinder travel the entire stroke,it is inevitable that at the end of upstroke phenomenon would occur.The pressure-out could lead power cylinder failure.For this purpose,it took the power cylinder of pumping system as example.Based on the fluid-structure interaction theory,the current research was carried out by using FEM.During the process,the pressure-out analysis of this system was continued.The results showed that the pressure impact would make the maximum stresses increase 10 times in a short time when in pressure-out,and it can easily damage the power cylinder.This research obtained the pressure curves and maximum stresses data,and the results are useful for the system failure diagnosis;it can also provide the data fundamentals to further optimal design of the system.

关 键 词：水基动力无杆抽油机 流-固耦合 有限元方法 憋压分析 

分 类 号：TH6[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]