高速屏蔽电机气隙流体泰勒涡仿真分析  

Taylor Vortex Simulation Analysis of Air Gap Fluid in High Speed Shielded Motors

作　　者：曹力 胡岩[1] 卓亮 吴文坤 施道龙 CAO Li;HU Yan;ZHUO Liang;WU Wenkun;SHI Daolong(Shenyang University of Technology,Shenyang 110000,China;Guizhou Aerospace Linquan Motor Co.,Ltd.,Guiyang 550008,China;National Precision Micro and Special Electric Motor Engineering Technology Research Center,Guiyang 550008,China)

机构地区：[1]沈阳工业大学,沈阳110000 [2]贵州航天林泉电机有限公司,贵阳550008 [3]国家精密微特电机工程技术研究中心,贵阳550081

出　　处：《微电机》2023年第5期19-24,30,共7页Micromotors

摘　　要：一体化高速屏蔽电机本体气隙处通常充满着动力推进介质,在转子高速运转时转子表面线速度会搅动气隙流体高速旋转,使得流体在小而窄的气隙中产生湍流效应,对电机本体内置轴承润滑和转子冷却产生影响。本文以额定转速为40000 r/min的高速屏蔽电机本体环形气隙内的流体运动为背景,针对气隙内泰勒库特流的流体流态开展了数值模拟研究,通过数值仿真分析得出,随着转子转速增加,气隙进、出口压力差变大,随着气隙宽度增加,气隙进、出口压力差减小。本文计算所得数据为维持内置轴承润滑和转子冷却所需进液流体参数提供了理论参考依据。The air gap of the integrated high-speed electric pump body is usually filled with power propulsion medium.When the rotor is running at high speed,the linear velocity on the rotor surface will stir the air gap fluid to rotate at high speed,causing turbulence in the small and narrow air gap,which affects the lubrication of the built-in bearings and rotor cooling of the motor body.This article took the fluid movement in the annular air gap of the high-speed electric pump motor with a rated speed of 40000 r/min as the background,and conducted numerical simulation research on the fluid flow pattern of Taylor Coulter flow in the air gap.Through numerical simulation analysis,it is found that as the rotor speed increases,the pressure difference between the inlet and outlet of the air gap increases,and as the air gap width increases,the pressure difference between the inlet and outlet of the air gap decreases.The data calculated in this article provides a theoretical reference for maintaining the inlet fluid parameters required for internal bearing lubrication and rotor cooling.

关 键 词：高速屏蔽电机 气隙 泰勒涡 仿真分析 

分 类 号：TM302[电气工程—电机] TM355