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Cooling air recycling for gas turbine transition duct end frame and related method

United States Patent

July 2, 2002
View the Complete Patent at the US Patent & Trademark Office
A method of cooling a transition duct end frame in a gas turbine includes the steps of a) directing cooling air into the end frame from a region external of the transition duct and the impingement cooling sleeve; and b) redirecting the cooling air from the end frame into the annulus between the transition duct and the impingement cooling sleeve.
Cromer; Robert Harold (Johnstown, NY), Bechtel; William Theodore (Scotia, NY), Sutcu; Maz (Niskayuna, NY)
General Electric Company (Schenectady, NY)
09/ 544,102
April 6, 2000
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.