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

1995-03-31

1997-06-03

Look, Edward K.

Rotary kinetic fluid motors or pumps

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

415191, 4152092, 4152093, F01D 904, F01D 906

Patent

active

056347669

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.

REFERENCES:
patent: 3628880 (1971-12-01), Smuland et al.
patent: 3807892 (1974-04-01), Frei et al.
patent: 4257734 (1981-03-01), Guy et al.
patent: 4355952 (1982-10-01), Brown et al.
patent: 4666368 (1987-05-01), Hook, Jr et al.
patent: 5232343 (1993-08-01), Butts
patent: 5253976 (1993-10-01), Cunha
patent: 5259730 (1993-11-01), Damlis et al.
patent: 5320485 (1994-06-01), Bourguignon et al.
"Advanced Cooled First Stage Vane Design," Levari et al.; ASME 84-GT-219.
"Flow in Corners of Passages with Non-Circular Cross-Sections", Eckert et al.; ASME Paper, Aug. 22, 1955.

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