离心式涡轮冷压缩机叶轮的研究

Study on the impeller of centrifugal turbo cold compressor

对于大型氦低温系统,采用多级离心式涡轮冷压缩机在低温低压下对饱和液氦槽减压操作,获得过冷氦,是目前国际上一种比较通用的方法。文章介绍了离心式涡轮冷压缩机的国外应用情况。根据中科院等离子体物理研究所EAST超导托卡马克氦低温系统当中过冷槽的设计制冷量,进行冷压机叶轮设计,并对模型进行CFD数值模拟计算。

Large helium cryogenic system using a multistage compressor set to pump gaseous helium form saturated liquid he- lium tank at low temperature and pressure for producing subcooler helium is a more uniform approach in the foreign countries. This paper described the application of centrifugal turbo cold compressor in the world. According the capacity of the helium re- frigerator for the EAST superconducting Tokamak, centrifugal impeller of cold compressor for the EAST cryogenic system subcoo- let tank was designed and CFD numerical simulation calculation was conducted.