6 kA 高温超导电流引线研制

摘要

6 kA电流引线的运行电流为6 kA，最大电流为8 kA，其换热器段采用液氮冷却设计，运行温区为77 K—室温，高温超导段为传导冷却，运行温区为5—77 K。介绍6 kA电流引线的结构设计、性能分析，以及相关低温实验。实验结果表明，6 kA电流引线的零电流下液氮需求低于0．46 g／s，5 K冷端漏热小于2．5 W，过流能力8 kA。%The 6kA current leads are required with a nominal current of 6 kA and a maximum current of 8 kA, the heat exchanger section ( 77 K—room temperature ) is cooled by liquid nitrogen , and the HTS module (5—78 K) is conduction-cooled.In this paper the design , analysis, and test of the 6kA current leads are introduced .The results show:liquid nitrogen consumption is less than 0.46 g/s, heat leak is less than 2.5 W at the 5 K cold end, and current capacity is 8 kA.