15 kV爆炸开关触头开断过程研究  

Research on breaking process of 15 kV pyrobreaker

作　　者：叶记飞 李华 李振瀚 宋执权[1] 傅鹏[1] Ye Jifei;Li Hua;Li Zhenhan;Song Zhiquan;Fu Peng(Institute of Plasma Physics,Hefei Institute of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;Science Island Branch,University of Science and Technology of China,Hefei 230026,China;School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]中国科学院合肥物质科学研究院等离子体研究所,合肥230031 [2]中国科学技术大学科学岛分院,合肥230026 [3]合肥工业大学电气与自动化工程学院,合肥230009

出　　处：《强激光与粒子束》2024年第11期136-143,共8页High Power Laser and Particle Beams

基　　金：国家重大科技基础设施建设“十三五”规划项目(2018-000052-73-01-001228)。

摘　　要：超导托卡马克装置通过极高的磁场来约束高温等离子体,以实现可控核聚变反应。为了保证超导磁体的安全运行,失超保护系统中需要爆炸开关实现至关重要的后备保护。对15 kV爆炸开关中最关键的电流触头进行了建模,针对爆炸及触头开断过程进行了数值分析,计算了触头分断所需要的爆轰压力,以及爆炸产生的压力分布规律。通过试验验证了数值模拟的准确性,这为爆炸开关的理论设计提供了基础。The superconducting tokamak device constrains high-temperature plasma through an extremely high magnetic field to achieve a controllable nuclear fusion reaction.To ensure the safe operation of the superconducting magnets,the quench protection system relies on pyrobreaker for critical backup protection.In this paper,the numerical model of current contacts in the 15 kV pyrobreaker has been established and the analysis is carried out for the contact breaking process.The detonation pressure required for contact separation and the pressure distribution law generated by the explosion are calculated.Furthermore,the accuracy of the numerical simulations is verified through experimental validation,providing a theoretical foundation for the design of pyrobreaker.

关 键 词：托卡马克 超导磁体 失超 爆炸开关 数值分析 

分 类 号：TM561[电气工程—电器]