摘要
】超导电气系统中采用高温超导引线与铜引线相结合的二元复合电流引线，能有效地降低进入系统低温环境的漏热。在ＧＭ制冷机直接冷却系统中，实现电流引线与ＧＭ制冷机冷头间电绝缘高导热的联接是制冷机直接冷却超导电气系统走向应用的关键技术之一。文中提出了二元复合电流引线直接冷却的基本结构，分析研究了高温超导引线、铜引线与ＧＭ制冷机冷头的连接方式，以及电流引线中的传热。
The key of the design for a cryocooler-cooled superconducting electric system lies in how heat invasion of the current leads into the second stage can be reduced within the refrigeration capacity. The hybrid current lead composed of high Tc superconducting sleads and copper leads can effectively reduce heat loads into cryostat. The main heat load into the second stage of the cryocooler is Joule teating due to the contact resistance between the copper leads and high Tc superconducting leads. It is very important to investigate contact resistance by means of microstructure conductive heat and microcryogenics.
出处
《低温与超导》
CAS
CSCD
北大核心
1999年第1期62-66,共5页
Cryogenics and Superconductivity
关键词
高TC
电流引线
直接冷却
界面热阻
超导系统
High Tc superconducting current lead
Cryocooler-cooling
Microstructure conductive heat
Microcryogenics
