Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Between blade edge and static part
Patent
1995-06-06
1997-01-14
Lopez, F. Daniel
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Between blade edge and static part
415115, F01D 1118
Patent
active
055932770
ABSTRACT:
A turbine shroud includes an annular outer casing having first and second radial flanges between which are suspended an adjoining annular shroud support and an annular shroud hanger. A plurality of shroud panels are joined to the shroud hanger and are positionable radially above turbine rotor blades to define a tip clearance therebetween. The four flanges are disposed in abutting contact with each other, and respective pluralities of circumferentially spaced apart first, second, and third recesses are disposed respectively between the casing first flange and the shroud flange, between the shroud flange and the hanger flange, and between the hanger flange and the casing second flange for providing radial flowpaths therebetween. The support flange and the hanger flange have respective pluralities of circumferentially spaced apart first and second metering holes extending axially therethrough for providing flow communication between the first, second, and third recesses for channeling compressor bleed air therethrough for controlling the tip clearance.
REFERENCES:
patent: 4101242 (1978-07-01), Coplin et al.
patent: 4303371 (1981-12-01), Eckert
patent: 4573866 (1986-03-01), Sandy, Jr. et al.
patent: 5080557 (1992-01-01), Berger
patent: 5169287 (1992-12-01), Proctor et al.
patent: 5174714 (1992-12-01), Plemmons et al.
patent: 5273396 (1993-12-01), Albrecht et al.
patent: 5330321 (1994-07-01), Roberts et al.
General Electric Company, CF34-3A1 gas turbine engine in production more than 1 year; 3 figures showing high pressure turbine shrouds and unpublished proposed temporary fix.
Brassfield Steven R.
Di Salle David A.
Linger David R.
Plemmons Larry W.
Proctor Robert
General Electric Company
Hess Andrew C.
Lee Michael S.
Lopez F. Daniel
Traynham Wayne O.
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