Air directed fuel injection
AssigneeSiemens Aktiengesellschaft
InventorTimothy Dolmansley
Life of this patent
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Abstract
A combustion chamber for a gas turbine is provided. The combustion chamber has a pilot burner device, a fuel injector, an ignitor unit and an air blast injector. The pilot burner device has a pilot body with a pilot surface facing an inner volume of the combustion chamber. The fuel injector has a fuel outlet for injecting a fuel into the inner volume, wherein the fuel outlet is arranged at the pilot surface. The ignitor unit is arranged at the pilot surface such that fuel which passes the ignitor unit is ignitable. The air blast injector is adapted for injecting an air blast into the inner volume, wherein the air blast injector includes an air blast outlet arranged at the pilot surface such that the air blast is injectable in the direction to the fuel outlet and the ignitor unit for directing the fuel to the ignitor unit.
Claims8
A combustion chamber for a gas turbine, the combustion chamber comprising a pilot burner device comprising a pilot body with a pilot surface which is facing an inner volume of the combustion chamber, wherein the pilot body is mounted to a hole in an end face of the combustion chamber such that the pilot surface is perpendicular to a flow of combustion gases in the inner volume, a fuel injector comprising a fuel outlet for injecting a fuel into the inner volume, wherein the fuel outlet is arranged at the pilot surface, an ignitor unit for igniting the fuel inside the inner volume, wherein the ignitor unit is arranged at the pilot surface such that the fuel which passes the ignitor unit is ignitable, and an air blast injector for injecting an air blast into the inner volume, wherein the air blast injector comprises an air blast outlet, wherein the air blast outlet comprises at least one aperture formed in the pilot surface and wherein the fuel outlet, the at least one aperture and the ignitor unit are spaced from each other in a circumferential direction such that air from the air blast injector is configured to direct the air blast in the circumferential direction toward the fuel outlet and then the ignitor unit, which is effective to direct the fuel to the ignitor unit.
A method for operating a combustion chamber, the method comprising inecting a fuel into an inner volume of the combustion chamber by a fuel injector, wherein the combustion chamber comprises a pilot burner device comprising a pilot body with a pilot surface which is facing the inner volume of the combustion chamber, wherein the pilot body is mounted to a hole in an end face of the combustion chamber such that the pilot surface is perpendicular to a flow of combustion gases in the inner volume, wherein the fuel injector comprises a fuel outlet which is arranged at the pilot surface, igniting the fuel inside the inner volume by an ignitor unit, wherein the ignitor unit is arranged at the pilot surface such that the fuel which passes the ignitor unit is ignitable, and injecting an air blast into the inner volume by an air blast injector which is arranged at the pilot surface, wherein the air blast injector comprises an air blast outlet, wherein the air blast outlet comprises at least one aperture formed in the pilot surface, and wherein the fuel outlet, the at least one aperture and the ignitor unit are spaced from each other in a circumferential direction such that air from the air blast injector is configured to direct the air blast in the circumferential direction toward the fuel outlet and then the ignitor unit, which is effective to direct the fuel to the ignitor unit.
Dependencies are inferred from the claim text.