传导冷却超导磁体系统电动式热开关性能分析  

Performance analysis of electric thermal switch in conduction-cooled superconducting magnet system

作　　者：梁庆 薛晓健 王磊[2] 曲洪一 孙晋璐 申欣 闫龙龙 Liang Qing;Xue Xiaojian;Wang Lei;Qu Hongyi;Sun Jinlu;Shen Xin;Yan Longlong(School of Intelligent Manufacturing Engineering,Shanxi Institute of Science and Technology,Jincheng 048011,China;Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]山西科技学院智能制造工程学院,晋城048011 [2]中国科学院电工研究所,北京100190

出　　处：《低温与超导》2024年第9期37-43,共7页Cryogenics and Superconductivity

基　　金：国家自然科学基金(52207033,52277032);山西省高等学校科技创新项目(2024L451);山西科技学院科研启动经费项目(2024022)资助。

摘　　要：设计了一种应用于传导冷却超导磁体系统的电动式热开关,通过建立传导冷却超导磁体系统冷却模型分析了其工作性能。电动式热开关由电机、推杆、导冷板和导冷带四部分组成,其中导冷带为金属铜构成的柔性编织带。结果表明,当导冷带截面积为500 mm^(2),铜的剩余电阻率为100时,设置电动式热开关后超导磁体从室温冷却至工作温度的时间减少了41.8%。随着导冷带截面积的增大,超导磁体的冷却时间逐渐减小,且减小的幅度逐渐变缓,而提高铜的剩余电阻率并不能显著降低其冷却时间。An electric thermal switch was designed for the conduction-cooled superconducting magnet system,and a model was built to analyze cooldown performance of the superconducting magnet system.The electric thermal switch consists of motor,push rod,conduction plate,and conduction belt with a flexible copper braid.The results show that when the cross-sectional area of the conduction belt is 500 mm^(2) and the residual resistivity ratio of copper is 100,the time for a superconducting magnet to cooldown from room temperature to operating temperature is reduced by 41.8%after installing the electric thermal switch in the superconducting magnet system.The cooldown time of the superconducting magnet decreases with increasing the cross-sectional area of the conduction belt,and the magnitude of the decrease gradually slows down.In addition,the cooldown time is not reduced significantly by increasing the residual resistivity ratio of copper.

关 键 词：超导磁体 传导 冷却 热开关 

分 类 号：TM265[一般工业技术—材料科学与工程]