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Internal cooling circuit for gas turbine bucket

United States Patent

October 25, 2005
View the Complete Patent at the US Patent & Trademark Office
In a gas turbine bucket having a shank portion and an airfoil portion having leading and trailing edges and pressure and suction sides, an internal cooling circuit, the internal cooling circuit having a serpentine configuration including plural radial outflow passages and plural radial inflow passages, and wherein a coolant inlet passage communicates with a first of the radial outflow passages along the trailing edge, the first radial outflow passage having a plurality of radially extending and radially spaced elongated rib segments extending between and connecting the pressure and suction sides in a middle region of the first passage to prevent ballooning of the pressure and suction sides at the first radial outflow passage.
Hyde; Susan Marie (Schenectady, NY), Davis; Richard Mallory (Scotia, NY)
General Electric Company (Schenectady, NY)
09/ 777,998
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.