Combustor and gas turbine
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsKenjiro KOMATSU, Hiromi KOIZUMI, Yoshitaka HIRATA, Keisuke MIURA, Yoshinori MATSUBARA
Life of this patent
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Abstract
A combustor includes a central burner and an outer burner. The outer burner includes: an inner burner surrounding an outer axis located on the radial outer-side of a demarcated combustor axis; and an outer burner surrounding the demarcated inner burner. The amount of fuel supplied to demarcated fuel nozzles can be independently adjusted for the demarcated inner burner and the demarcated outer burner. A hole-free region where demarcated air holes of the outer burner are not formed is provided between the inner burner and the demarcated central burner on the downstream end face.
Claims8
A combustor comprising:
- an air hole plate that has a plurality of air holes extending in a direction of a combustor axis line and opening to a downstream end surface;
- and
- a plurality of fuel nozzles that are provided to correspond to the respective air holes and each supply fuel to the corresponding air hole from an upstream side,
- wherein a central burner is configured of the plurality of air holes and the plurality of fuel nozzles that are collectively disposed to surround the combustor axis line,
- an outer-side burner is configured of the plurality of air holes and the plurality of fuel nozzles that are collectively disposed on a radial outer side of the central burner,
- the outer-side burner includes
- an inner burner that is provided to surround an outer-side axis line located on a radial outer side of the combustor axis line, and
- an outer burner that is provided to surround the inner burner,
- a fuel supply amount to the fuel nozzle is independently adjustable for the inner burner and the outer burner, and
- a hole non-forming region in which the air holes of the outer burner are not formed is provided between the inner burner and the central burner on the downstream end surface.
Dependencies are inferred from the claim text.