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Rotor self-lubricating axial stopA plurality of lubricating plugs are disposed in the stationary backup face adjacent to the axial stop face of a rotating impeller mounted in a turbopump for pumping liquid oxygen or liquid hydrogen. The stop face and the backup face are those surfaces which engage when the axial load on the impeller exceeds the load balancing capability. The plugs have a truncated conical configuration so as to be trapped in the backup face, and are disposed at varying radii on the face to provide complete surface lubrication. The plugs may be formed from Teflon, Kel-F or bronze filled Teflon.
Document ID
20080012349
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Blount, Dale H.
Date Acquired
August 24, 2013
Publication Date
May 2, 1989
Subject Category
Mechanical Engineering
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,826,396
Patent Application
US-PATENT-APPL-SN-149830

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