Turbine nozzle having purge air circuit

Details Turbine nozzle having purge air circuit Turbine nozzle having purge air circuit

1998-07-22

2000-05-23

Look, Edward K.

Rotary kinetic fluid motors or pumps

With passage in blade, vane, shaft or rotary distributor...

416 96R, 416 97R, F01D 518

Patent

active

060659289

ABSTRACT:
A turbine nozzle includes radially outer and inner bands between which extend a plurality of vanes. The vanes include impingement baffles having impingement holes for impinging cooling air inside the vane for cooling thereof. An air circuit is disposed in the inner band and includes a plurality of outlet holes. A transfer tube is disposed in flow communication between respective ones of the baffles and the air circuit for channeling thereto a portion of the cooling air from inside the baffles as pre-impingement air for discharge through the outlet holes.

REFERENCES:
patent: 5207556 (1993-05-01), Frederick et al.
patent: 5217348 (1993-06-01), Rup, Jr. et al.
patent: 5358374 (1994-10-01), Correia et al.
patent: 5645397 (1997-07-01), Soechting et al.
patent: 5772398 (1998-06-01), Noiret et al.

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