Combustor and cap assemblies for combustors in a gas turbine
AssigneeGeneral Electric Company
InventorsJere Johnson, Mark Bailey, Robert Berry, Stewart Beitz, James Monaghan
Life of this patent
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Abstract
The cap assembly of a turbine combustor includes a plurality of burner tubes sealed against fuel nozzles extending in the tubes. These piston seals are coated with a high velocity oxygen fuel coating to extend their service life. The outer cap body assembly includes concentric seal rings each with cantilevered convex fingers circumferentially offset from one another to seal between the cap assembly casing and the inner liner. The cap assembly casing is provided with a plurality of holes at predetermined locations about the casing to minimize or eliminate response to combustion dynamics.
Claims8
A cap assembly for a turbine combustor comprising:
- a plurality of burner tubes;
- a fuel nozzle in each burner tube;
- and
- seals between the burner tubes and the fuel nozzles, each seal including a ring having a high velocity oxygen fuel coating on a surface thereof.
A combustor comprising:
- a combustor liner;
- a cap assembly in part received within an end of the liner;
- and
- a seal between the cap assembly and said liner including pair of generally annular rings, each said ring having a plurality of spring fingers at circumferentially spaced locations thereabout, said rings being concentrically disposed relative to one another with the spring fingers of one ring circumferentially offset from the spring fingers of another ring enabling the spring fingers of each ring to register with gaps between the spring fingers of said another ring.
A cap assembly for a turbine combustor comprising:
- a plurality of burner tubes;
- a fuel nozzle in each burner tube;
- an outer body sleeve surrounding said plurality of burner tubes and having a plurality of openings sized and located to protect against onset of a mode of combustion dynamics.
Dependencies are inferred from the claim text.