Insert metering plates for gas turbine nozzles
AssigneeGeneral Electric Company
InventorsSteven S. Burdgick, Gary Itzel, Sanjay Chopra, Nesim Abuaf, Victor H. Correia
Life of this patent
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Abstract
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.
Claims11
A nozzle assembly for directing cooling airflow in a gas turbine nozzle, said nozzle assembly comprising:
- an impingement insert for cooling the nozzle airfoil walls;
- and
- a metering plate, having at least one metering hole, for balancing cooling airflow within different circuits of the nozzle.
A method for directing cooling airflow within a multi cavity gas turbine nozzle, said method comprising:
- inserting at least one impingement insert into at least one of the nozzle cavities;
- and
- attaching at least one metering plate to said at least one impingement insert.
A method for directing cooling airflow within a multi cavity gas turbine nozzle, said method comprising:
- forming at least one assembly of an impingement insert and a metering plate;
- and
- inserting said at least one assembly into one of the cavities of the gas turbine nozzle.
Dependencies are inferred from the claim text.