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Conference Article: Preliminary Scheme Design and Analysis of Catcher Bearing for HTR-10GT

Abstract

The electromagnetic bearing was chosen to support the rotor in the helium turbine and generator system of 10MW high temperature gas-cooled reactor (HTR-10GT), and the catcher bearing was applied in the HTR-10GT as the backup protector. When the electromagnetic bearing doesn’t work suddenly for the power broken, the catcher bearing is used to support the falling rotor with high rotating speed. The rotor system of the turbine and generator will be protected by the catcher bearing. The design of catcher bearing is the ultimate safeguard for the HTR-10GT. This rotor is vertically mounted to hold the turbine machine, compressors and the power generator together. The rotor’s length is about 7 m, its weight is about 1500 kg and the rotating speed is 15000 r/min. The design of the catcher bearing is one of the challenging problems in the whole system. It is very important for HTR-10GT to make success. The research status of the catcher bearing was summarized in the paper. A sort of preliminary scheme of catcher bearing structure was proposed. The falling course was analyzed. The stress of the generator rotor and catcher bearing was computed by the finite element method and MSC.Dytran. The scheme of catcher bearing and the analytical results offer the important theoretical base for the protector design of the HTR-10GT.

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Reference:

Proceedings of the Conference on High Temperature Reactors, Beijing, China, September, 22-24, 2004

International Atomic Energy Agency, Vienna (Austria)

HTR-2004, pp:1-8