Rotary kinetic fluid motors or pumps – With passage in blade – vane – shaft or rotary distributor...
Patent
1994-03-09
1995-04-18
Kwon, John T.
Rotary kinetic fluid motors or pumps
With passage in blade, vane, shaft or rotary distributor...
415116, F01D 518
Patent
active
054073197
ABSTRACT:
A cooling and sealing arrangement in a gas turbine engine comprises a seal assembly (42,30) extending between nozzle guide vanes (20) and combustion chamber discharge nozzles (22). The nozzle guide vanes (20) have platforms (34,36) having extensions (34A,36A) which in one embodiment overlap the downstream ends of the discharge nozzles (22). Cooling air is supplied to the upstream edge portions of the platforms through holes (26,28C) in flanges (24,28) on the discharge nozzles (22). The seal assembly (42,30) defines a chamber (58,70) adjacent the platform extensions which is supplied with cooling air through metering holes (56,68) in the seal assembly. Cooling air exits the chamber (58,70) through holes (34B,36B) in the platform extensions to film cool them.
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Griffin Arthur B.
Harrogate Ian W. R.
Taylor David H.
Tuson David W.
Kwon John T.
Rolls-Royce plc
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