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Cooling scheme for turbine hot parts

United States Patent

August 22, 2000
View the Complete Patent at the US Patent & Trademark Office
A closed-loop cooling scheme for cooling stationary combustion turbine components, such as vanes, ring segments and transitions, is provided. The cooling scheme comprises: (1) an annular coolant inlet chamber, situated between the cylinder and blade ring of a turbine, for housing coolant before being distributed to the turbine components; (2) an annular coolant exhaust chamber, situated between the cylinder and the blade ring and proximate the annular coolant inlet chamber, for collecting coolant exhaust from the turbine components; (3) a coolant inlet conduit for supplying the coolant to said coolant inlet chamber; (4) a coolant exhaust conduit for directing coolant from said coolant exhaust chamber; and (5) a piping arrangement for distributing the coolant to and directing coolant exhaust from the turbine components. In preferred embodiments of the invention, the cooling scheme further comprises static seals for sealing the blade ring to the cylinder and flexible joints for attaching the blade ring to the turbine components.
Hultgren; Kent Goran (Winter Park, FL), Owen; Brian Charles (Orlando, FL), Dowman; Steven Wayne (Orlando, FL), Nordlund; Raymond Scott (Orlando, FL), Smith; Ricky Lee (Oviedo, FL)
Siemens Westinghouse Power Corporation (Orlando, FL)
09/ 067,593
April 27, 1998
This invention was conceived under United States Department of Energy Contract DE-FC21-95MC32267. The United States Government has certain right hereunder.