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Insert metering plates for gas turbine nozzles

United States Patent

May 11, 2004
View the Complete Patent at the US Patent & Trademark Office
The invention comprises a metering plate which is assembled to an impingement insert for use in the nozzle of a gas turbine. The metering plate can have one or more metering holes and is used to balance the cooling flow within the nozzle. A metering plate with multiple holes reduces static pressure variations which result from the cooling airflow through the metering plate. The metering plate can be assembled to the insert before or after the insert is inserted into the nozzle.
Burdgick; Steven S. (Schenectady, NY), Itzel; Gary (Greenville, SC), Chopra; Sanjay (Schenectady, NY), Abuaf; Nesim (Schenectady, NY), Correia; Victor H. (Milton Mills, NH)
General Electric Company (Schenectady, NY)
10/ 092,572
March 8, 2002
This invention was made with Government support under Contract No. DE-FC21-95ZMC31176 awarded by the Department of Energy. The Government has certain rights in this invention.