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Combustor dome assembly of a gas turbine engine having a free floating swirler

A technology of gas turbines and gas turbines, which is applied in the direction of burners, combustion chambers, combustion methods, etc., and can solve the problems of reducing emissions and thinning

Active Publication Date: 2005-03-23
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although, typical burner constructions have enough room between the swirler shrouds to install parts to enhance the double-annulus structure (e.g., add ribs, cooling holes, etc.), the current burner design still has some geometry limits, these burner configurations operate lean burn to reduce emissions

Method used

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  • Combustor dome assembly of a gas turbine engine having a free floating swirler
  • Combustor dome assembly of a gas turbine engine having a free floating swirler
  • Combustor dome assembly of a gas turbine engine having a free floating swirler

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Embodiment Construction

[0023] Referring now in detail to the drawings, wherein like parts are designated by like numerals throughout. FIG. 1 shows a combustor 10 of an exemplary gas turbine with a longitudinal center axis 12 passing through it. The combustor 10 includes a combustion chamber 14 formed by an outer liner 16, an inner liner 18 and a dome plate 20 at the upstream end. Within the dome plate 20 , a plurality of fuel / air mixers 22 are circumferentially spaced from each other for feeding a mixture of fuel and air into the combustion chamber 14 . The mixture is ignited by an igniter (not shown) in the combustion chamber and forms combustion gases for driving one or more turbines downstream. More specifically, each air / fuel mixer 22 includes a fuel nozzle 24 , a swirler 26 and a deflector plate 28 .

[0024] More specifically, dome plate 20 is circular and includes an inner portion 30, an outer portion 32, a forward facing surface 34 and a plurality of circumferentially spaced holes 36 (see ...

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Abstract

A combustor dome assembly for a gas turbine engine having a longitudinal centerline axis extending therethrough, including: an annular dome plate having an inner portion, an outer portion, a forward surface and a plurality of circumferentially spaced openings formed therein, wherein a radial section is defined between adjacent openings; an annular outer cowl connected to the outer portion of the dome plate; an annular inner cowl connected to the inner portion of the dome plate; and, a swirler located between the forward surface of the dome plate and the inner and outer cowls in substantial alignment with each of the openings in the dome plate. Each swirler further includes a forward portion and an aft portion and is retained by at least one tab member located upstream thereof so as to be movable in a radial and axial direction.

Description

technical field [0001] The present invention relates generally to a combustor dome assembly for a gas turbine, and more particularly to a combustor dome assembly having a plurality of free-floating swirlers. The swirlers are held in position between the dome plate and the inner and outer shrouds such that each swirler receives a fuel nozzle and is movable radially and axially with the nozzle. Background technique [0002] As is well known in gas turbine combustor technology, the dome section, in combination with inner and outer liners, serves to form the boundaries of the combustion chamber. The mixture of fuel and air is ignited and combusted in such a combustor, causing its products to act against the blades of the turbine and generate work through one or more shafts. An annular combustor dome allows mixers to be positioned around the circumference to allow the fuel / air mixture to enter the combustion chamber. [0003] Gas turbine combustors generally require a floating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/14F23R3/42F23R3/60
CPCF23D2211/00F23R3/10F23R3/14F23R3/60
Inventor M·A·麦克马斯特斯J·E·汤普森G·A·茨马鲁斯蒂J·N·库珀G·E·维赫
Owner GENERAL ELECTRIC CO
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