基于流固耦合传热分析的液压电机泵温度场特征  

Temperature Field Characteristics of Hydraulic Motor Pump Based on Fluid-structure Coupling Heat Transfer Analysis

作　　者：冀宏[1] 邢晖晖 孙飞 彭彦博 李晨[1] JI Hong;XING Hui-hui;SUN Fei;PENG Yan-bo;LI Chen(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou,Gansu 730050)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050

出　　处：《液压与气动》2023年第3期1-8,共8页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(52075233)。

摘　　要：为获得液压电机泵全域温度场分布特征,分析计算不同负载下电机电磁损耗和液压泵功率损失值,将电机主要部件、液压泵泵芯作为固定体热源,建立了电机泵流固耦合传热仿真模型。结果表明:随着负载的增加,电机泵的整体温度逐渐升高,高温区主要集中在电机定子、转子和泵芯上,其中泵芯的温度相对较低;负载低于6 MPa时,电机泵的最高温位置始终位于定子绕组,负载增加后,逐渐转移至转子导条。采用热电偶测量电机泵样机壳体表面特征点的温度,与仿真结果的最大偏差为9.6%,验证了电机泵流固耦合传热模型及计算方法的有效性。In order to obtain the global temperature field distribution characteristics of the hydraulic motor pump,the motor electromagnetic loss and the power loss of the hydraulic pump were analyzed and calculated under different loads.The main parts of the motor and the pump core of the hydraulic pump were taken as the fixed body heat source,and the fluid-structure coupling heat transfer simulation model of the motor pump was established.The results show that:with the increase of load,the overall temperature of the motor pump increases gradually,and the high temperature area is mainly concentrated in the motor stator,rotor and pump core,where the pump core temperature is relatively low;when the load is lower than 6 MPa,the highest temperature position of the motor pump is always located in the stator winding,and when the load increases,it gradually shifts to the rotor guide bar.Finally,a thermocouple was used to measure the temperature of the characteristic points on the shell surface of motor pump prototype,and the maximum deviation was 9.6%from the simulation results,which verified the effectiveness of the fluid-structure coupling heat transfer model and calculation method.

关 键 词：液压电机泵 电机热源 泵热源 流固耦合传热 温度场特征 

分 类 号：TH137[机械工程—机械制造及自动化]