冷冻靶制备用低温氦气循环系统  

Cycling helium system for cryogenic target handling system

作　　者：丁先庚[1,2] 丁怀况[1] 施锦[2] 

机构地区：[1]中国电子科技集团公司第十六研究所,合肥230043 [2]安徽万瑞冷电科技有限公司,合肥230088

出　　处：《低温与超导》2012年第1期22-26,39,共6页Cryogenics and Superconductivity

摘　　要：常温高压渗透充气、低温冷却的冷冻靶球,需要20K以下的低温循环氦气,用于冷却高压渗透室和低温恒温腔。本套系统采用GM制冷机为冷源,采用专用氦压缩机为循环泵,设计高效率的回热式换热器,实现末端的20K以下低温氦气,通过低温氦气冷却终端部件,实现了20K的低温恒温环境和渗透室的冷却。The cryogenic target which is treated by high - pressure permeation charge at room temperature and after cryogenic cooling, needs cryogenic cycling helium with temperature below 20K to cool the high - pressure permeation cell and cryostat. Adopting GM cryocooler as the cold source and dedicated helium compressor as the cycling pump, with the design of high - effi- ciency regenerative heat interchanger, the system can obtain cryogenic helium with temperature below 20K through which the end fittings are cooled down, and thereby to achieve Cryogenic and homothermal environment and cooling of permeation cell

关 键 词：冷冻靶 低温循环 氦压缩机 GM制冷机 高压渗透 

分 类 号：TB651[一般工业技术—制冷工程]