Extended life fuel nozzle
AssigneeSiemens Power Generation, Inc.
InventorsSamer P. Wasif, Robert J. Bland
Life of this patent
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Abstract
A gas sleeve (120) for a combustor (408) of gas turbine engine (400) attaches to a support housing (100) of the combustor (408) to convey a fuel gas and to fit within a fuel rocket (110). The gas sleeve (120) comprises a plurality of apertures (128) formed to provide impingement cooling. The apertures (128) comprise a tilt angle directed toward a structure in need of impingement cooling, for instance a weld joint (114) that attaches the fuel rocket (110) to the support housing (100). The apertures (128) additionally may comprise a rotational angle effective to create a rotationally swirling flow of the portion of fuel gas that passes through the apertures (128). A method of operation using this structure also is provided.
Claims20
A fuel rocket assembly for a gas turbine engine combustor, comprising:
- a fuel rocket having a base end adapted to attach to a combustor support housing and a distal end adapted for attachment to a swirler assembly;
- and
- a gas sleeve attached to the support housing to convey a fuel gas and fitting within the fuel rocket, comprising a plurality of apertures formed to provide impingement cooling.
A gas sleeve for a gas turbine engine combustor, adapted to attach to a support housing to convey a fuel gas and to fit within a fuel rocket, comprising a plurality of apertures formed to provide impingement cooling.
A method for cooling a desired area of a fuel rocket assembly of a gas turbine engine combustor comprising:
- directing a portion of fuel gas to be consumed in the combustor through a plurality of apertures to impinge the area to be cooled by said portion prior to said portion being consumed, wherein the plurality of apertures are formed through a gas sleeve at angles to direct said portion to the area, the gas sleeve attached to the support housing to convey a fuel gas and fitting within the fuel rocket.
Dependencies are inferred from the claim text.