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Cooling circuit for a gas turbine bucket and tip shroud

United States Patent

December 31, 2002
View the Complete Patent at the US Patent & Trademark Office
An open cooling circuit for a gas turbine bucket wherein the bucket has an airfoil portion, and a tip shroud, the cooling circuit including a plurality of radial cooling holes extending through the airfoil portion and communicating with an enlarged internal area within the tip shroud before exiting the tip shroud such that a cooling medium used to cool the airfoil portion is subsequently used to cool the tip shroud.
Willett; Fred Thomas (Burnt Hills, NY), Itzel; Gary Michael (Clifton Park, NY), Stathopoulos; Dimitrios (Glenmont, NY), Plemmons; Larry Wayne (late of Hamilton, OH), Plemmons; Helen M. (Hamilton, OH), Lewis; Doyle C. (Greer, SC)
09/ 852,673
May 11, 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.