turbine stator vane segments having leading edge impingement coo

Details turbine stator vane segments having leading edge impingement coo turbine stator vane segments having leading edge impingement coo

1997-04-04

1998-06-09

Kwon, John T.

Rotary kinetic fluid motors or pumps

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

F01D 904

Patent

active

057624712

ABSTRACT:
Each nozzle vane of a turbine includes a leading edge cavity having an insert spaced from interior wall surfaces of the vane. The insert includes impingement holes for flowing cooling medium from within the insert through the holes for impingement cooling of the vane walls. The insert has a divider dividing the insert into first and second chambers. Cooling medium is supplied directly from a source to the first chamber for impingement cooling of the adjacent vane wall surfaces. Cooling medium at a substantially reduced pressure resulting from impingement cooling of the outer wall of the nozzle segment is supplied to the second chamber. The pressure of the cooling medium supplied the second chamber establishes the pressure difference between the interior and the exterior of the insert thereby affording increased cooling intensity of the impingement cooling flow.

REFERENCES:
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patent: 5591002 (1997-01-01), Cunha et al.
patent: 5611662 (1997-03-01), Cunha
patent: 5634766 (1997-06-01), Cunha et al.

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