Turbine shroud assembly

Details Turbine shroud assembly Turbine shroud assembly

1979-05-25

1982-06-01

Casaregola, Louis J.

Rotary kinetic fluid motors or pumps

Including casing part selectively movable relative to fixed...

415172A, F04D 2908

Patent

active

043325238

ABSTRACT:
A turbine shroud assembly is provided for use in conjunction with a turbine engine having a turbine rotor consisting of a disc and plurality of blades attached to and extending radially outwardly from the disc wherein the outer tips of the blades are axially tapered at a predetermined angle. The shroud assembly comprises an annular shroud positioned around the turbine blades and tapered axially at the predetermined angle such that the shroud is evenly spaced radially outwardly from the turbine blades. A plurality of circumferentially spaced bell crank assemblies attach the shroud to a turbine support housing and, in response to thermal expansion of the shroud, axially shift the shroud in a direction to decrease the clearance between the shroud and the turbine blade tips.

REFERENCES:
patent: 3146992 (1964-09-01), Farrell
patent: 3185441 (1965-05-01), Reuter
patent: 3227418 (1966-01-01), West
patent: 3876330 (1975-05-01), Pearson
patent: 3970318 (1976-07-01), Tuley
patent: 3986720 (1976-10-01), Knuden et al.
patent: 4050843 (1977-09-01), Needham
patent: 4127357 (1978-11-01), Patterson

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