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Axial thermal medium delivery tubes and retention plates for a gas turbine rotor

United States Patent

September 17, 2002
View the Complete Patent at the US Patent & Trademark Office
In a multi-stage turbine rotor, tubes are disposed in openings adjacent the rotor rim for flowing a thermal medium to rotor buckets and returning spent thermal medium. The tubes have axially spaced lands of predetermined wall thickness with thin-walled tube sections between the lands and of increasing thickness from the forward to the aft ends of the tubes. A pair of retention plates are carried on the aft end face of the aft wheel and straddle the tube and engage against a shoulder on the tube to preclude displacement of the tube in an aft direction.
Mashey; Thomas Charles (Coxsackie, NY)
General Electric Company (Schenectady, NY)
09/ 778,042
February 7, 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.