CAT-1偶极场装置悬浮超导磁体介绍与低温传热分析  

Introduction and Low Temperature Heat Transfer Analysis of CAT-1 Dipole Field Device Floating Superconducting Magnet

作　　者：骆国柯 唐伟伟 王雨锋 LUO Guoke;TANG Weiwei;WANG Yufeng(School of Nuclear Science and Engineering,East China University of Technology,Nanchang 330013,China)

机构地区：[1]东华理工大学核科学与工程学院,南昌330013

出　　处：《能源研究与管理》2022年第2期81-85,共5页Energy Research and Management

基　　金：江西省关键技术研发基金项目(20192ACB80006)。

摘　　要：针对我国目前处于设计研发阶段的天环一号(CAT-1)悬浮偶极场磁约束装置等离子体实验运行相关的Nb3Sn低温超导磁体悬浮时间问题进行分析与计算。完成了低温悬浮超导磁体的三维内部结构有限元建模;开展了在低温冷却系统连接切断情况下,悬浮超导磁体线圈温度分布随时间变化的模拟分析。结果表明:在切断低温供冷后悬浮超导磁体线圈在8.15 h内始终维持超导特性,部件区域最高温度低于超导材料失超限制值10 K,满足CAT-1装置实验运行要求,初步验证了本悬浮超导磁体内部结构参数设计的合理性与可靠性。One of all issues for Tianhuan-1(China Astro-Torus No.1,CAT-1)floating dipole field magnetic confinement device which is currently in the stage of design and development,analysis and calculation of Nb3Sn low-temperature superconducting magnet leviating time is a key challenge which ensuring successful plasma experiment operation.In this paper,by means of the three-dimensional finite element software,heat transfer of CAT-1 low-temperature floating superconducting magnet internal structure has been simulated under the condition of disconnecting of the low-temperature cooling system,and temperature distribution inside the floating superconducting magnet with time was given out.The result shows that after cutting off the low temperature coolant,floating superconducting magnet coil always may all the time keep superconductivity characteristics within 8.15 h while maximum temperature in the area of internal magnet is lower than the superconducting material loss limit value of 10 K which meets the CAT-1 experiment requirements.The rationality and reliability of the floating superconducting magnet internal structure parameter design have been preliminarily verified.

关 键 词：偶极场磁约束聚变 悬浮超导磁体 低温传热 悬浮时间 

分 类 号：TL631[核科学技术—核技术及应用]