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- W2368164310 abstract "A bump type gas foil bearing was designed to meet the requirements of reliability and stability of high speed turbomachinery employed in engineering and an experimental investigation into the bump type gas foil bearing was carried out on a gas bearing high speed turbo-expander rotor test rig.The bump type gas foil bearing mainly consists of compliant top plate foil and bottom bump foil layers.In the experiment,the turbo-expander rotor was driven by compressed air with the pressure of 0.1-1.15MPa and a volume flow rate of up to 600m3/h(under standard conditions)from a 75kW Atlas scroll compressor.Two bump type gas foil bearings having the foil 0.05mm and 0.07mm in thickness were applied in an industrial 150m3/h(under standard conditions)oxygen high speed turbo-expander in which the diameter of the rotor is 25mm.The vibration characteristics and the stability were examined.The results show that stiffness was one of the most important factors in bearing performance.The good stiffness characteristic of the 0.05mm foil promoted effectively the vibration performance of the bearing,and the maximum rotational speed reached 93 366r/min.In comparison,the larger stiffness of 0.07mm foil caused the instable rotation of the rotor at 93 161r/min.When the maximum rotating speed of the turboexpander rotor was 93 000r/min,the present bump type gas foil bearing had good stiffness and damping performance.In addition,the maximum vibration amplitudes were smaller than 20μm,thus effectively inhibiting the rotor whir in the high speed turbo-expander." @default.
- W2368164310 created "2016-06-24" @default.
- W2368164310 creator A5052907238 @default.
- W2368164310 date "2014-01-01" @default.
- W2368164310 modified "2023-09-28" @default.
- W2368164310 title "Experimental Study on Gas Lubricated Hydrodynamic Bump Type Foil Bearing" @default.
- W2368164310 hasPublicationYear "2014" @default.
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