Combustor cap mounting structure for a turbine engine

Inactive Publication Date: 2013-10-24
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a combustor cap assembly for a turbine engine that includes a cylindrical combustor cap that receives fuel nozzles, a cylindrical combustor cap barrel flange, and support struts that mount the combustor cap to the combustor cap barrel flange. The support struts extend between the outer circumference of the combustor cap and an inner circumference of the combustor cap barrel flange. The invention also includes a support strut that mounts a combustor cap to a combustor cap barrel flange using a cylindrical body with an inner end that attaches to the outer circumference of the combustor cap and an outer end that attaches to an inner circumference of the combustor cap barrel flange. The support strut has an interior passageway that extends between an entrance aperture and an exit aperture. The technical effect of this invention is to provide a more efficient and reliable mounting mechanism for the combustor cap in the turbine engine, which improves the overall performance and reliability of the engine.

Problems solved by technology

Other obstacles in the compressed air flow path, such as cross fire tubes, can also cause fuel to migrate upstream.
All of which is undesirable.

Method used

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  • Combustor cap mounting structure for a turbine engine
  • Combustor cap mounting structure for a turbine engine
  • Combustor cap mounting structure for a turbine engine

Examples

Experimental program
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Embodiment Construction

[0015]FIGS. 3 and 4 illustrate a support strut 160 which can be used to mount a combustor cap to a combustor cap barrel flange. The support strut 160 replaces the A-frame spacers 116 used for this purpose in the background art combustor cap assembly illustrated in FIGS. 1 and 2. The support strut 160 has an airfoil shape, with a rounded leading edge 161 and a tapered trailing edge 163. In addition, an interior passageway extends through the interior of the support strut 160 between an entrance aperture 162 and an exit aperture 164.

[0016]FIG. 4, which is a cross-sectional view of a support strut 160 attached to a combustor cap barrel flange 150, illustrates that the inner end 166 and outer end 168 of the support strut 160 are substantially parallel to one another. In alternate embodiment, however, the inner and outer ends could be angled relative to one another. In some embodiments, the leading edge 161 and trailing edge 163 of each support strut 160 may be angled with respect to the...

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PUM

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Abstract

A mounting structure for mounting a combustor cap in a combustor of a turbine engine includes support struts that are connected between the combustor cap and a concentric combustor cap barrel flange. The support struts may have an airfoil shape to minimize wakes created in a flow of compressed air that is passing over the support struts. Also, the support struts may have an interior passageway that allows a portion of the compressed air to flow though the support strut. The flow of air passing through the support struts may also pass through corresponding vent apertures in the combustor cap barrel flange so that the flow of air passing through the support struts is delivered into a space between the exterior of the combustor cap barrel flange and a forward casing of the combustor.

Description

BACKGROUND OF THE INVENTION[0001]A combustor for a turbine engine used in the power generation industry can include a combustor cap that is mounted adjacent a forward end of the combustor. A plurality of fuel nozzles are typically mounted to an end cover and pass through the combustor cap. Compressed air flows around the exterior periphery of the combustor cap, makes a 180° turn, and then flows through the fuel nozzles, where the air is mixed with fuel. The air-fuel mixture is then ignited downstream from the combustor cap.[0002]FIGS. 1 and 2 illustrate a typical background art combustor cap assembly mounted in a combustor. As illustrated in these Figures, a combustor cap 110 having openings 112 to receive a plurality of fuel nozzles is mounted to a combustor cap barrel flange 118 by a plurality of A-frame spacers 116. The A-frame spacers 116 are typically formed from flat metal strips. Center portions of the A-frame spacers are mounted to the inner circumference of the combustor ca...

Claims

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Application Information

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IPC IPC(8): F23R3/00
CPCF23R3/002F23R3/283
InventorKENNER, CHRISTOPHER PAULSTEWART, JASON
OwnerGENERAL ELECTRIC CO