21-25 July 2019
Connecticut Convention Center, Level 6
US/Eastern timezone

C3Or2C-02: Cryogenic Performance Test Platform for the Gas Bearings of Helium Turbine Expanders

24 Jul 2019, 14:15
15m
Level 6, Room 22-23

Level 6, Room 22-23

Speaker

Ms Shanshan Li (Institute of Plasma Physics Chinese Academy of Sciences)

Description

Turbo- expander is the heart of the helium refrigerator, and the gas bearing as the critical component influences the stability of the turbine. There is 300K operating temperature difference between the expansion wheel and the gas bearing in the helium turbine. Therefore, it is necessary to consider the thermodynamics of the bearing-rotor when studying bearing dynamic stability. In this paper, a cryogenic test platform for gas bearings is designed to analyze the performance of gas bearings with cryogenic gas supply and study the impact on turbine stability.

Primary author

Ms Shanshan Li (Institute of Plasma Physics Chinese Academy of Sciences)

Co-authors

Dr Bao Fu (Institute of Plasma Physics, China Academy of Sciences) Prof. Qiyong Zhang (Institute of Plasma Physics, Chinese Academy of Sciences)

Presentation Materials