EAST-NBI偏转磁体线圈水冷能力分析与测试研究  

Analyses and tests of cooling capability of EAST-NBI deflection magnet coils

作　　者：赵祥学[1,2] 王艳[1] 梁立振[1] 胡纯栋[1] 韦江龙[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031 [2]中国科学技术大学,合肥230026

出　　处：《核技术》2014年第12期11-15,共5页Nuclear Techniques

基　　金：国际磁约束核聚变能发展研究专项基金(No.2013GB101000)资助

摘　　要：偏转磁体是中性束注入器的关键部件之一,它安装在中性束注入器真空室内部。为适应核聚变研究装置对中性束注入器高能量、长脉冲、稳态运行的要求,对其偏转磁体原先励磁线圈的水冷系统进行了分析,提出增加水冷抽头的方法完成了改进设计,并对改进前后线圈的冷却能力进行了实验测试。测试结果显示,当中性束注入器长脉冲稳态运行时,改进后的水冷结构能及时带走偏转磁体励磁线圈产生的热量;冷却水的进出口水温差约21 oC;偏转磁体线圈导体表面的温度约45 oC;改进设计水冷系统性能得到优化,满足了EAST-NBI高参数、稳态运行的要求。Background： The deflection magnet is one of the key components of the neutral beam injector, it is installed in the neutral beam injector vacuum chamber. While the neutral beam injector works, the heat generated by current running through exciting coils of deflection magnet must be taken away by the cooling water simultaneously. Purpose： In order to meet the requirements of the developing nuclear fusion researches, the neutral beam injector must work steadily, providing neutral beam of high energy, high power continuously. The cooling abilities of the deflection magnets must be enhanced. Methods： The water cooling structure of excitation coils of the original deflection magnet was optimized by adding a pair of water taps in each primary coil, and the tests were made to check the cooling capbilities of the improved exciting coils. Results： When the neutral beam injector runs at the state of long pulse, improved water cooling structures take away the heat generated by the exciting coils timely. The improvement of the cooling abilities of the coils was successful. Conclusion： The temperature difference between the inlet and outlet of the cooling water pipe is about 21 ℃, and the surface temperature of deflection magnet coil is about 45 ℃.

关 键 词：中性束 偏转磁体 励磁线圈 结构设计 实验测试 

分 类 号：O532.26[理学—等离子体物理]