基于流动模拟的多级离心泵叶轮应力变形分析  

Stress Deformation Analysis of Multistage Centrifugal Pump Impeller Based on Flow Simulation

作　　者：倪羽凤 覃磊[1] 杜侠明 王君[1] 

机构地区：[1]中国石油大学(华东)化学工程学院

出　　处：《化工机械》2014年第2期204-206,226,共4页Chemical Engineering & Machinery

基　　金：山东省自然科学基金资助项目(ZR2011EEQ020);青岛市科技发展计划项目(12-1-4-7-(4)-jch);中央高校基本科研业务费专项资金资助

摘　　要：提出一种基于FLUENT和ABAQUS的多级离心泵叶轮受力变形分析方法,在FLUENT中对离心泵内的流动情况进行模拟,得到叶轮内介质力的分布规律;并将介质力作为叶轮受力的边界条件,在ABAQUS中对叶轮在工作运行工况下进行有限元分析,得到了叶轮的应力分布和变形规律,找到了叶轮的最大应力点和最大变形位置。研究结果表明:工作工况下叶轮前盖板变形较后盖板明显,叶轮轴向变形比周向变形和径向变形大;叶轮空转工况下存在应力集中现象,离心力对叶轮的受力变形影响较大。Based on both FLUENT and ABAQUS,the method to analyze the stress deformation of multistage centrifugal pump was proposed. Simulating flow condition within the pump with FLUENT can obtain the medium's distribution rule in the impeller where the medium acting as the force transfer; through loading the pressure as boundary condition and analyzing the impeller in running condition with ABAQUS can get impeller's stress distribution and stress deformation rule as well as the impeller's largest stress point and maximum deformation position. The research results show that,in the working condition,the deformation of impeller's front shroud becomes more obvious than that of the back shroud,and its axial deformation looks severer than both circumferential and radial deformation; and the stress concentrates while the impeller is idling; and the centrifugal force influences impeller's stress deformation greatly.

关 键 词：多级离心泵 叶轮 流动模拟 应力分布 变形规律 

分 类 号：TQ051.21[化学工程]