液氮传导冷却型高温超导电流引线研制  

Development on liquid nitrogen conduction-cooled HTS current Leads

作　　者：刘承连[1] 丁开忠[1] 周挺志[1] 冯汉升[1] 陆坤[1] 宋云涛[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031

出　　处：《低温工程》2016年第1期59-63,共5页Cryogenics

基　　金：科研合作项目-80A/200A高温超导电流引线研制(KD 201508X)

摘　　要：80 A和200 A液氮传导冷却型高温超导（HTS）电流引线由铜引线段、中间过渡段和高温超导段组成,HTS热端采用液氮传导冷却,HTS冷端采用液氦传导冷却。铜引线段工作在室温到中间温度（~80 K）,高温超导段工作温区6—80 K。介绍该传导冷却型电流引线的结构设计和低温性能测试。实验结果表明,中间过渡段温度~78 K,高温超导热端温度77 K;80 A、200 A电流引线液氦下稳态测试电流分别为100 A和250 A。The liquid nitrogen conduction-cooled 80 A 200 A HTS current leads are composed of copper wire section,transition section and HTS section. The copper wire section（ 80 K to room temperature） is conduction-cooled by liquid nitrogen,and the HTS section（ 6 K to 80 K） is conduction-cooled by liquid helium at cold end. The design and test of the conduction-cooled current leads were introduced. The test results show that the temperature of transition section is about 78 K,and the HTS warm end temperature is 77 K; the 100 A and 250 A steady-state tests have been performed in liquid helium for the 80 A and 200 A current leads.

关 键 词：BI-2223 高温超导电流引线 液氮冷却 漏热 

分 类 号：TB69[一般工业技术—制冷工程] TM26[一般工业技术—材料科学与工程]