摘要
采用流固耦合速度场及传热场结合的方法,对560kW矿用永磁偶合器应用于露天矿离心负载调速过程最大发热点的温度场进行了研究,可知最大发热点工况下热损耗与转差率呈3次方关系,流固耦合速度场求得散热系数139.9W/(m^(2)·k),最高温度在热源铜盘处为107.53℃,最低温度为永磁体盘处69.3℃,虽满足行业标准要求,但高温升造成了磁场传动性能衰减。基于此种工况提出了于钢盘内圈开通风孔方式提高散热性能,最终实现铜盘最高温度降低10℃,其余温度降低4~6℃,温度分布更均匀。
Fluid-solid coupling velocity field and heat transfer field method are used to study the temperature field of the maximum heating point of the 560 kW mine permanent magnetic coupler during the open-pit mine centrifugal load speed regulation process,and the heat loss under the maximum heating point working condition is to the 3 rd power relationship with the slip.According to the fluid-structure coupling velocity field,the heat dissipation coefficient is 139.9 W/(m^(2)·k),the highest temperature is 107.53℃ at the heat source copper plate,and the lowest temperature is 69.3℃ at the permanent magnet plate.Though it meets the requirements of industry standards,but the high temperature rise causes decline of the magnetic field transmission performance.Based on this working condition,a method of opening vent holes in the inner ring of the steel plate is proposed to improve the heat dissipation performance,with which the maximum temperature of the copper plate drops 10℃,other temperatures drop 4 ~ 6℃,and the temperature distributes more uniformly.
作者
朱玉芹
王雷
刘昊
ZHU Yu-qin;WANG Lei;LIU Hao(China Coal Technology Engineering Group Shenyang Research Institute,Fushun 113122,China;School of Mechanical Engineering,Dalian University of Technology,Dalian 116023,China)
出处
《煤炭工程》
北大核心
2021年第1期106-109,共4页
Coal Engineering
基金
辽宁省自然科学基金资助项目(2019-MS-233)
中煤科工集团科技创新基金资助项目(2020-QN003)
中煤科工集团沈阳研究院科技创新基金资助项目(SYZD-20-009,SYZD-20-010)。
关键词
永磁偶合器
流固耦合
温度仿真
最大发热点
散热系数
permanent magnetic coupler
fluid-structure coupling
temperature simulation
maximum heating point
heat dissipation coefficient
