Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Erodable or permanently deformable
Patent
1976-11-22
1978-05-02
Croyle, Carlton R.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Erodable or permanently deformable
415197, F01D 1108
Patent
active
040871991
ABSTRACT:
A high temperature turbine shroud assembly for an aircraft gas turbine engine comprising a plurality of arcuate ceramic blocks arranged in a ring. The blocks are supported by a pair of annular support members which retain the blocks in the assembly. Spring-like fingers associated with the support members apply a preloaded force against a pair of slanted dovetail surfaces on the blocks to force the blocks against rigid stops formed upon the annular support members, thereby establishing their proper radial position within the assembly. The preload applied by the fingers accommodates the thermal expansion differences between the ceramic blocks and the metallic support members. In an alternative embodiment, the blocks are retained between cooperating rigid legs extending from the annular support members and wedged radially inwardly into position by a preloaded spring contacting the back side of the blocks. Heat transfer between the blocks and metallic support members is minimized by providing point or line contact between components, thus reducing the contact area available for heat conduction.
REFERENCES:
patent: 3398931 (1968-08-01), Miller
patent: 3601414 (1971-08-01), Rao
patent: 3864056 (1975-02-01), Gabriel et al.
Corsmeier Robert J.
Hauser Ambrose A.
Hemsworth Martin C.
Croyle Carlton R.
General Electric Company
Holland Donald S.
Lampe, Jr. Robert C.
Lawrence Derek P.
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