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Cooling supply system for stage 3 bucket of a gas turbine

United States Patent

June 4, 2002
View the Complete Patent at the US Patent & Trademark Office
In a land based gas turbine including a compressor, a combustor and turbine section including at least three stages, an improvement comprising an inlet into a third stage nozzle from the compressor for feeding cooling air from the compressor to the third stage nozzle; at least one passageway running substantially radially through each airfoil of the third stage nozzle and an associated diaphragm, into an annular space between the rotor and the diaphragm; and passageways communicating between the annular space and individual buckets of the third stage.
Eldrid; Sacheverel Quentin (Saratoga Springs, NY), Burns; James Lee (Schenectady, NY), Palmer; Gene David (Clifton Park, NY), Leone; Sal Albert (Scotia, NY), Drlik; Gary Joseph (Fairfield, OH), Gibler; Edward Eugene (Cincinnati, OH)
General Electric Company (Schenectady, NY)
09/ 773,369
February 1, 2001
This invention was made with Government support under Contract No. DE-FC21-95MC31176 awarded by the Department of Energy. The Government has certain rights in this invention.