DOUBLE-CIRCUIT BURNER OF LOW-EMISSION COMBUSTION CHAMBER OF GAS TURBINE ENGINE Russian patent published in 2022 - IPC F23R3/14 

FIELD: engine building.

SUBSTANCE: invention relates to the field of gas turbine engine building; it is intended for the use in the structure of combustion chambers of gas turbine installations, both mobile and stationary, operating on gaseous fuel, namely: relates to devices for burning fuel with a low content of harmful substances in exhaust gases of gas turbine installations based on the implementation of a principle of burning a poor homogeneous fuel-air mixture with a flame temperature not higher than 1750°K in diffusion flame of a duty combustion zone. A two-circuit burner of a low-emission combustion chamber of a gas turbine engine contains a case and a rod with channels of fuel supply to main and duty combustion zones, a nozzle, a turbulator ledge located in front of a swirler, an air swirler with hollow blades and holes in them for supplying fuel to the main zone, a central body, in the inner cavity of which a fuel nozzle of the duty zone is located. In the inner cavity of the central body, there is a tie bolt fixing the fuel nozzle of the duty zone in the central body, an adjustment element is located between the tie bolt and the fuel nozzle of the duty zone, a threaded end of which is fixed in the tie bolt, and a free end is made either in the form of a needle and enters a narrowing fuel channel of the fuel nozzle of the duty zone, or in the form of a screw with a countersunk head, which is located at an output from the inner cavity of the tie bolt.

EFFECT: invention makes it possible to reduce the level of atmospheric pollutants in exhaust gases at all operating modes of the gas turbine installation, and also allows for a high-efficiency fuel combustion process.

1 cl, 3 dwg