Turbine nozzle backflow inhibitor

Details Turbine nozzle backflow inhibitor Turbine nozzle backflow inhibitor

1993-07-21

1994-10-25

Look, Edward K.

Rotary kinetic fluid motors or pumps

With control means responsive to non-cyclic condition...

Temperature or fluid force responsive member

415115, 415116, F01D 906, F01D 1100

Patent

active

053583744

ABSTRACT:
A turbine nozzle includes a vane integrally joined between outer and inner bands, with the inner band having a purge hole for discharging a portion of cooling air channeled through the vane. A checkvalve is provided in the purge hole for preventing backflow therethrough into the vane. In an exemplary embodiment, the checkvalve allows a reduction in cooling air through the vane at low power operation for increasing efficiency while preventing backflow of combustion gases into the purge hole.

REFERENCES:
patent: 2470471 (1949-05-01), Carleton
patent: 3975901 (1976-08-01), Hallinger et al.
patent: 4728260 (1988-03-01), Ishii
patent: 4805398 (1989-02-01), Jourdain et al.
patent: 5022817 (1991-06-01), O'Halloran
patent: 5064343 (1991-11-01), Mills
patent: 5082245 (1992-01-01), Kast

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