BEPCII氦制冷机冷箱故障分析和维护  

Failure analysis and maintenance of cold box in helium refrigerator

作　　者：桑民敬[1] 葛锐[1] 徐妙富[1] 张卓[1] 张祥镇 李梅[1] 叶瑞[1] 李少鹏[1] 

机构地区：[1]中国科学院高能物理研究所中国科学院粒子加速物理与技术重点实验室,北京100049

出　　处：《低温工程》2017年第1期54-58,共5页Cryogenics

基　　金：中国科学院重大科技基础设施维修改造项目

摘　　要：BEPCII低温系统制冷机运行时间已达12年,制冷机冷箱出现了多种问题,例如:冷箱内存在压缩机油,活性炭粉末等,导致制冷机的制冷能力严重下降。为了提高制冷机的制冷能力,提高工作效率,消除隐患,针对问题开展对制冷机Plant A冷箱进行了彻底的维护。维护后制冷机运行稳定,制冷能力达到验收时的指标。The cryogenic refrigerator of BEPCII have been running for twelve years. Various problems appear in the refrigerator cold box, for example：compressor oil and the activated carbon powder are found in the cold box, which resulting in a serious decline in the cooling capacity of refrigerator. In order to improve the refrigeration capacity as well as the work efficiency and eliminate hidden dangers, the cold box of the re- frigerator PlantA has been maintained thoroughly this year.

关 键 词：BEPCII 氦制冷机 低温系统 换热器 

分 类 号：TB651[一般工业技术—制冷工程]