失超工况下中子散射超导磁体热辐射屏的磁力耦合分析  

Analysis coupling of magnetic in the thermal shield of a neutron scattering superconducting magnet under quench

作　　者：尚荣强 郭永超 贾富杰 周华海 姚世康 赵航[3] 谭运飞 陈文革[3] Shang Rongqiang;Guo Yongchao;Jia Fujie;Zhou Huahai;Yao Shikang;Zhao Hang;Tan Yunfei;Chen Wenge(School of Mechanical Engineering,Hubei University of Automotive Technology,Shiyan 442000,China;Hubei Changping Automobile Equipment Co.,Ltd,Shiyan 442000,China;High Magnetic Field Laboratory,Chinese Academy of Sciences,Hefei 230031,China;National High Magnetic Field Center,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]湖北汽车工业学院机械工程学院,十堰442000 [2]湖北长平汽车装备有限公司,十堰442000 [3]中国科学院强磁场科学中心,合肥230031 [4]华中科技大学国家脉冲强磁场科学中心,武汉430074

出　　处：《低温与超导》2025年第2期14-19,共6页Cryogenics and Superconductivity

基　　金：国家重点研发计划(2016YFA0401504);湖北汽车工业学院博士科研启动基金(BK202202)资助。

摘　　要：中子散射超导磁体为样品中子散射实验提供了必要的强磁场极端条件,运行时不可避免会出现失超工况,可能会使热辐射屏上应力过大导致结构失效,造成超导磁体故障。本文针对失超工况下热辐射屏的电磁载荷问题,利用有限元法对其进行磁力耦合分析,得到了各部分涡流密度分布趋势,校核了电磁力大小等,验证了结构设计的合理性。Neutron scattering superconducting magnet provides the extreme conditions of high magnetic field for the sample neutron scattering experiment,and the quenching are inevitable during operation,which would lead to structural failure and su-perconducting magnet fault because of excessive stress on the thermal shield.This paper addressed the electromagnetic load issue of the thermal shield under quench.The magnetic coupling analysis was carried out by using the finite element method.In this way,the distribution trend of the eddy current density in each part were obtained and the electromagnetic force was checked.Ad-ditionally,the paper verified the reasonableness of the structural design.

关 键 词：失超 超导磁体 热辐射屏 耦合分析 

分 类 号：TM26[一般工业技术—材料科学与工程]