US 2019/0346142 A1 · FLAMESHEET DIFFUSION CARTRIDGE

Abstract

A diffusion cartridge assembly for a gas turbine engine, and methods of using the same. The diffusion cartridge assembly includes a tip plate with an array of fuel supply openings and a mounting hole radially inward of the array of fuel supply openings, an end cover, and an outer sleeve extending from the tip plate to the end cover and defining an open inner chamber. A fuel supply line is coupled to the end cover and extends within the open inner chamber toward the tip plate. A manifold is coupled to an end of the fuel supply line proximate to the tip plate, and includes an array of fuel injector tips. Each of the fuel injector tips extends through a respective one of the array of fuel supply openings in the tip plate. The manifold also includes a thermally free mounting pin extending into the mounting hole.

Claims20

Dependent claims

A diffusion cartridge assembly for a gas turbine engine combustion system, the diffusion cartridge assembly comprising:

a tip plate including an array of fuel supply openings and a mounting hole radially inward of the array of fuel supply openings;
an end cover;
an outer sleeve extending from the tip plate to the end cover and defining an open inner chamber;
a fuel supply line coupled to the end cover and extending within the open inner chamber toward tip plate;
and
a manifold coupled to an end of the fuel supply line proximate to the tip plate, the manifold including an array of fuel injector tips, each extending through a respective one of the array of fuel supply openings in the tip plate, the manifold further comprising a thermally free pin extending into the mounting hole.

3 more elements

A combustion system for a gas turbine comprising:

a cylindrical combustion liner having an inlet, an outlet, and a center axis and defining a combustion chamber;
a main mixer located radially outward of the cylindrical combustion liner relative to the center axis, wherein the main mixer is configured to premix fuel and compressed air upstream of the combustion chamber forming a premixed fuel and air mixture, and wherein the main mixer is configured to direct the premixed fuel and air mixture towards one or more main flames within the combustion chamber, the one or more main flames being located circumferentially about the periphery of the combustion chamber;
and
a diffusion cartridge assembly extending about the center axis of the cylindrical combustion liner and located radially inward of the one or more main flames, the diffusion cartridge assembly configured to inject a gaseous fuel directly into the combustion chamber proximate the inlet of the cylindrical combustion liner.

1 more element

A method for operating a combustion system of a gas turbine engine, the method comprising:

providing a cylindrical combustion liner defining a combustion chamber, the cylindrical combustion liner having an inlet, an outlet, and a center axis;
providing a main mixer located radially outward of the cylindrical combustion liner relative to the center axis;
directing into the combustion chamber a main premixed fuel and air mixture, the main premixed fuel and air mixture being formed by premixing fuel and compressed air upstream of the combustion chamber at the main mixer, wherein the main premixed fuel and air mixture is directed into the combustion chamber such that it supports one or more main combustion flames within the combustion chamber, the one or more main combustion flames being located circumferentially about the periphery of the combustion chamber;
providing a diffusion cartridge assembly radially inward of the one or more main combustion flames, the diffusion cartridge assembly extending about the center axis of the cylindrical combustion liner and extending into the combustion chamber;
and
injecting gaseous fuel directly into the combustion chamber using the diffusion cartridge assembly, wherein the gaseous fuel is injected into the combustion chamber proximate the inlet of the cylindrical combustion liner and at an oblique angle with respect to the center axis.

3 more elements

Dependencies are inferred from the claim text.

Flamesheet diffusion cartridge

Life of this patent

Flamesheet diffusion cartridge

Life of this patent

Abstract

Claims20