铜水热管在地铁车辆应用中的失效分析与可靠性研究  

Failure analysis and reliability research of copper-water heat pipe in metro vehicle application

作　　者：梁锦发 刘雄 吴智勇 范伟 LIANG Jinfa;LIU Xiong;WU Zhiyong;FAN Wei(Shenzhen Metro Construction Group Co.,Ltd.,Shenzhen,Guangdong 518000,China;Zhuzhou CRRC Times Electric Co.,Ltd.,Zhuzhou,Hunan 412001,China;CRRC Zhuzhou Institute Co.,Ltd.,Zhuzhou,Hunan 412001,China)

机构地区：[1]深圳地铁建设集团有限公司,广东深圳518000 [2]株洲中车时代电气股份有限公司,湖南株洲412001 [3]中车株洲电力机车研究所有限公司,湖南株洲412001

出　　处：《机车电传动》2024年第6期127-132,共6页Electric Drive for Locomotives

基　　金：湖南省高新技术产业科技创新引领计划(2020GK2073)。

摘　　要：铜水热管作为一种常见且简单经济的散热设备,广泛应用于各行各业,研究其可靠性,针对设备的热管理,特别是针对热敏度高的电力电子器件的冷却,具有十分重要的意义。文章以轨道交通用运行于不同地区的某几条线路不少于10年的热管散热器为研究对象,对其开展等温性、耐温性、功率传输、真空度、工质化验等试验。试验结果分析表明,铜水热管管壳工质稳定,使用寿命大于10年,在生产使用过程中小概率会发生由于管壁破坏或在封管工艺过程中进气导致的失效故障,建议热管厂商改进封管工艺,提高热管的性能与可靠性。As simple and economical heat dissipation devices,copper-water heat pipes are widely used in all walks of life.Studying their reliability is greatly significant to the thermal management of equipment,especially the cooling of power electronic devices with high thermal sensitivity.This study focused on heat pipe radiators used in several rail transit lines that have been operated for at least 10 years in different regions.A series of experiments were conducted for evaluation in multiple aspects including isothermal performance,temperature resistance,power transfer,and vacuum degree,along with laboratory tests of the working fluid.The analysis of results show that,thanks to the stable working fluid,the copper-water heat pipes generally have a service life of more than 10 years.Furthermore,a low probability of failure was identified,primarily associated with wall damage and air ingress during the pipe sealing process.Therefore,recommendations are offered for heat pipe manufacturer to improve the performance and reliability of heat pipes by refining the pipe sealing process.

关 键 词：铜水热管 可靠性 真空度 不凝气体 等温性 地铁车辆 

分 类 号：U231[交通运输工程—道路与铁道工程]