Arrangement for maintaining clearances between a turbine rotor a

Details Arrangement for maintaining clearances between a turbine rotor a Arrangement for maintaining clearances between a turbine rotor a

1982-06-30

1984-04-03

Hart, Douglas

Power plants

Combustion products used as motive fluid

Combined with regulation of power output feature

60 3936, 415117, 415136, 415139, F02C 718, F01D 1108, F01D 2512

Patent

active

044399820

ABSTRACT:
An annular sleeve surrounds a turbine rotor and is fixed to a stationary part, the sleeve being elastically deformable in a radial direction. A wear ring is carried by the sleeve, the wear ring being composed of segments arranged end-to-end circumferentially. The adjacent ends of the segments are spaced apart at all operating conditions of the turbine. The thermal expansions of the turbine rotor and of the sleeve and ring are so related that under operating conditions of the turbine, when the engine of which it forms a part is running, the sleeve thermally expands radially. The rate of thermal expansion of the stationary part is directly related to the rate of thermal expansion of the turbine rotor. Air leaving the compressor is directed against the sleeve and the stationary part carrying the sleeve. The wear ring and portion carrying the sleeve may be insulated. The sleeve may be mounted on a combustion chamber surrounding the turbine.

REFERENCES:
patent: 2625013 (1953-01-01), Howard
patent: 2859934 (1958-11-01), Halford
patent: 3115011 (1963-12-01), Deinhardt
patent: 3391904 (1968-07-01), Albert
patent: 3583824 (1971-06-01), Smuland
patent: 3892497 (1975-07-01), Gunderlock
patent: 4013376 (1977-03-01), Bisson
patent: 4053254 (1977-10-01), Chaplin
patent: 4171614 (1979-10-01), Weiler
patent: 4195476 (1980-04-01), Wood
patent: 4251185 (1981-02-01), Karstensen

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