Method and apparatus for decreasing combustor acoustics
AssigneeGeneral Electric Company
InventorsJun Xu, Timothy Held
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Abstract
A method for decreasing combustor acoustics in gas turbine engines is provided. The method includes fabricating a plurality of premixers, chamfering a trailing edge of a main swirler shroud of each premixer, coupling a respective one of the chamfered premixers to each of a plurality of combustor domes, and coupling the plurality of combustor domes to an inlet of a combustor in a circumferential arrangement such that, during operation, the chamfered edge facilitates reducing combustor acoustics.
Claims18
A method for assembling a combustor in gas turbine engines comprising:
- fabricating a plurality of premixers;
- chamfering a trailing edge of a main swirler shroud of each premixer;
- coupling a respective one of the chamfered premixers to each of a plurality of combustor domes;
- and
- coupling the plurality of combustor domes to an inlet of a combustor in a circumferential arrangement such that, during operation, the chamfered edge facilitates reducing combustor acoustics.
A fuel delivery apparatus for a dry low emission (DLE) combustor for a gas turbine engine comprising:
- a plurality of combustor domes circumferentially arranged and coupled to the combustor inlet;
- and
- a premixer coupled to a respective one of each of said plurality of domes, each said premixer comprising a chamfered trailing edge configured to suppress coupling of a vortex shedding with acoustic vibrations in the combustor.
A gas turbine engine comprising:
- a combustor;
- and
- a fuel delivery system coupled to said combustor, said fuel delivery system comprising:
- a plurality of combustor domes circumferentially arranged and coupled to an inlet of said combustor;
- and
- a premixer coupled to a respective one of each of said plurality of domes, each said premixer comprising a chamfered trailing edge configured to suppress coupling of a vortex shedding with acoustic vibrations in the combustor.
Dependencies are inferred from the claim text.