Methods and apparatus for operating gas turbine engines
AssigneeGeneral Electric Company
InventorsBlaine Charles Bosley, Sean Robert Keith, Jeffrey Allen Kress, Richard W. Albrecht, Jr.
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Abstract
A method of operating a gas turbine engine is provided. The method includes channeling cooling air towards a shroud hanger assembly such that the cooling air flows through a cavity defined in the shroud hanger assembly, directing the cooling air through a plurality of cooling passages extending from the cavity, and discharging the air from the plurality of cooling passages towards an impingement baffle to facilitate cooling a shroud hanging from the shroud hanger.
Claims17
A method of operating a gas turbine engine, said method comprising:
- channeling cooling air towards a shroud hanger assembly such that the cooling air flows through a screen coupled to a cavity defined in an upstream face of the shroud hanger assembly;
- directing air into the cavity through the screen;
- directing the cooling air through a plurality of cooling passages extending from the upstream face of the shroud hanger assembly;
- and
- discharging the air from the plurality of cooling passages towards an impingement baffle to facilitate cooling a shroud hanging from the shroud hanger.
A shroud hanger assembly comprising:
- a shroud hanger;
- and
- an impingement baffle that is coupled to said shroud hanger, said shroud hanger comprises a cavity, a plurality of cooling passages defined therein and a screen coupled to an upstream face of said shroud hanger, each said cooling passage extends from the upstream face of said shroud hanger through said shroud hanger for channeling cooling air towards said impingement baffle, at least two of said cooling passages are coupled together in flow communication via said cavity.
A gas turbine engine comprising:
- a compressor;
- and
- a turbine assembly coupled downstream said compressor, said turbine assembly comprising a shroud hanger assembly at least partially circumscribing the engine, said shroud hanger assembly comprising:
- a shroud hanger;
- and
- an impingement baffle that is coupled to said shroud hanger, said shroud hanger comprises a cavity, a plurality of cooling passages defined therein and a screen coupled to an upstream face of said shroud hanger, each said cooling passage extends from the upstream face of said shroud hanger through said shroud hanger for channeling cooling air towards said impingement baffle, at least two of said cooling passages are coupled together in flow communication via said cavity.
Dependencies are inferred from the claim text.