Optimization design of turbo-expander gas bearing for a 500W helium refrigerator

[摘要] Turbo-expander is the core machinery of the helium refrigerator. Bearing as the supporting element is the core technology to impact the design of turbo-expander. The perfect design and performance study for the gas bearing are essential to ensure the stability of turbo-expander. In this paper, numerical simulation is used to analyze the performance of gas bearing for a 500W helium refrigerator turbine, and the optimization design of the gas bearing has been completed. And the results of the gas bearing optimization have a guiding role in the processing technology. Finally, the turbine experiments verify that the gas bearing has good performance, and ensure the stable operation of the turbine.

[发布机构] Institute of Plasma Physics Chinese Academy of Sciences, Shushanhu Road 350, Hefei, Anhui; 230031, China^1

[效力级别] 物理学 [学科分类] 材料科学（综合）

[关键词] Core technology;Helium refrigerators;Optimization design;Performance study;Processing technologies;Stable operation