Turbine stator vane segments having combined air and steam cooli

Details Turbine stator vane segments having combined air and steam cooli Turbine stator vane segments having combined air and steam cooli

1996-07-02

1998-04-28

Verdier, Christopher

Rotary kinetic fluid motors or pumps

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

415191, 4152092, 4152093, F01D 904, F01D 906

Patent

active

057437084

ABSTRACT:
Turbine stator vane segments have inner and outer walls with vanes extending therebetween. The inner and outer walls are compartmentalized and have impingement plates. Steam flowing into the outer wall passes through the impingement plate for impingement cooling of the outer wall surface. The spent impingement steam flows into cavities of the vane having inserts for impingement cooling the walls of the vane. The steam passes into the inner wall and through the impingement plate for impingement cooling of the inner wall surface and for return through return cavities having inserts for impingement cooling of the vane surfaces. The trailing edge is air-cooled.

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"Advanced Cooled First Stage Vane Design"; Levari et al.; ASME 84-GT-219.
"Flow in Corners of Passages with Noncircular Cross Sections"; Eckert et al.; ASME Paper, Aug. 22, 1955.

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