北京航空航天大学学报 ›› 2017, Vol. 43 ›› Issue (8): 1647-1653.doi: 10.13700/j.bh.1001-5965.2016.0605

• 论文 • 上一篇    下一篇

基于Fluent的电液泵流场与温度场有限元分析

付永领, 阳加远, 朱德明   

  1. 北京航空航天大学机械工程及自动化学院, 北京 100083
  • 收稿日期:2016-07-19 修回日期:2016-08-26 出版日期:2017-08-20 发布日期:2017-08-29
  • 通讯作者: 付永领 E-mail:13901397185@126.com
  • 作者简介:付永领,男,博士,教授,博士生导师。主要研究方向:新型液压伺服系统理论与试验研究、集成机电液控伺服系统、飞机机电系统的综合控制、特种机器人等;阳加远,男,硕士研究生。主要研究方向:集成一体化电液泵。

Finite element analysis of flow field and temperature field of electro-hydraulic pump by Fluent

FU Yongling, YANG Jiayuan, ZHU Deming   

  1. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2016-07-19 Revised:2016-08-26 Online:2017-08-20 Published:2017-08-29

摘要: 介绍三相异步电机-轴向柱塞式电液泵(EHP)的集成结构与工作原理,计算电液泵机械损耗,在Ansoft软件中建立电液泵电机模型,仿真分析电液泵的电磁损耗,并在此基础上建立有限元耦合模型,借助Fluent软件仿真分析液压油在壳体内腔的流动与温度分布状态,以及关键零部件的温度分布。有限元分析结果表明,液压油可以在流道内充分流动,并且额定工作状态下,当进口液压油温度为35℃时,电机定子最高温度不超过58℃,转子最高温度不超过40℃,散热效果好于传统电动机-泵组。针对定子内部温度较高的现象,研究了定子四周打4个直径10 mm的通孔后的温度分布情况,并与打孔前进行了对比,结果表明,打孔后电机定子最高温度降低了0.6℃,局部区域温度降低超过3℃,散热效果改善明显。

关键词: 电液泵(EHP), 流场, 温度场, 有限元, 损耗

Abstract: The integrated structure and working principle of three phase induction motor-axial piston electro-hydraulic pump (EHP) were introduced. The mechanical losses were calculated. A model of EHP was established in Ansoft software, and then the electromagnetic losses were analyzed. Finite element coupling model was established. The flow and temperature distribution of hydraulic oil as well as the temperature field distribution of the key parts were analyzed by Fluent software. The analysis results depict that hydraulic oil can fully flow in internal flow road. The maximum temperature of stator is not more than 58℃, and the maximum temperature of rotor is not more than 40℃ under rated condition when the inlet oil temperature is 35℃. Cooling effect is better than motor-pump sets. The results also show that stator oil hole can obviously improve cooling effect. The maximum temperature of stator is reduced by 0.6℃, and local region temperature is reduced by more than 3℃ when four oil holes with a diameter of 10 mm are made.

Key words: electro-hydraulic pump (EHP), flow field, temperature field, finite element, loss

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