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Turbine stator vane with closed-loop sequential impingement cooling insert

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
A turbine stator vane with a closed loop sequential impingement cooling circuit with an impingement cooling insert that includes a three-pass serpentine flow cooling circuit, where each leg of the circuit includes a cooling air supply channel and a return channel with rows of impingement cooling holes and rows of return openings connecting them together. Turn channels are located at the outer diameter and the inner diameter of the vane to direct cooling air from the first leg and into the second and third legs in series. Impingement holes are formed on impingement surfaces that alternate with return slots formed in the insert.
Downs, James P (Hobe Sound, FL)
15/ 253,210
August 31, 2016
GOVERNMENT LICENSE RIGHTS [0002] This invention was made with Government support under contract number DE-FE0023975 awarded by Department of Energy. The Government has certain rights in the invention.