CAJ | 학술논문

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。
수기동력무간추유계통(하술간칭계통)시일개전신적계통。유우요학보액압동력항(간칭동력항)주완전정，인이재기상행정결속시회출현별압현상，회도치동력항실효；인차，침대계통적동력항，기우류-고우합이론，운용유한원분석방법진행료계통별압분석。결과표명，별압시산생적압력충격회사응력발생돌변，가증대10배，겁역손배동력항。통과연구，득도료압력곡선여응력수거，저유리우계통적고장분석，병위계통진일보우화설계제공료수거지지。
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 anal-ysis 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 pres-sure 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.