作者:程琦，路义萍，孙海锋，艾丽昆，韩家德，谢增林
Authors:CHENG Qi,LU Yi-ping,SUN Hai-feng,AI Li-kun,HAN Jia-de,XIE Zeng-lin摘要:摘要:屏蔽电机重要部件的峰值温度是影响屏蔽电机安全稳定运行的关键因素。对内置螺旋管的屏蔽电机而言，螺旋管的布置方式影响着屏蔽电机的温度场。本文对某内置螺旋管冷却的屏蔽电机，分别将螺旋管布置成叉排及顺排，并采用基于计算流体力学原理（CFD）的有限体积法对两种不同布置方式下屏蔽电机的温度场进行数值模拟和对比分析。计算结果表明，电机机壳和一、二次水的温度分布呈现上部温度低，下部温度高的特点；双层螺旋管叉排布置方式时，冷却水的换热量大于其顺排布置方式下冷却水的换热量，且屏蔽电机的整体平均温度高；为屏蔽电机的内置换热器布置方式的选择提供参考。
Abstract:Abstract:The maximum temperature of main components of a canned motor is the key factor affecting the safe and stable operation of the canned motor.Especially for a canned motor with built-in spiral tube, the arrangement of spiral tube will have a great influence on the temperature field of the canned motor.In this paper, the physical model of cooling canned motor with built-in spiral tube was established and its internal spiral tube was arranged into two ways of staggered and parallel.Then, the temperature fields of the canned motor under two different arrangements were numerically simulated and contrastively analyzed by the finite volume method based on the CFD principle.The temperature distribution of the motor casing and the primary and secondary water shows the characteristics of low temperature in the upper part and high temperature in the lower part.The heat transfer of cooling water in the arrangement of staggered of double-layer spiral tubes is greather than that in the arrangement of parallel, and the overall average temperature of the canned motor is higher. It provides a reference for the selection of the layout of the built-in heat exchanger arrangement of the canned motor.

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