GAS TURBINE ENGINE COMBUSTION CHAMBER BURNER Russian patent published in 2021 - IPC F23D14/02 

FIELD: gas turbine engines.

SUBSTANCE: invention relates to burners for combustion chambers of gas turbine engines operating primarily on gaseous fuel. The burner device of the combustion chamber consists of a housing (1), a fuel injector (2), fixed with flanges (3) to the shell of the combustion chamber, the outlet section of the nozzle (2) is installed in the opening of the housing (1), a sealing unit is installed between the outlet section of the nozzle and the housing ( four). The body (1) is installed in an annular head (7) and has a mixing chamber (8) with tangential grooves (5) and rows of holes (6). The outlet nozzle (9) is converging-expanding or cylindrical. In the housing (1) in the outlet part of the nozzle (9) there are two concentrically located cooling annular channels (10) and (15), at the inlet communicated with the air supply channel. At the outlet of the annular channel (15) there are holes (14) evenly spaced around the circumference, through which the cooling air enters the space of the flame tube (7). At the outlet of the annular channels (10) and (15) in the cavity of the flame tube, there are protective shielding surfaces (11). The outlet section of the nozzle (2) has axial (12) and radial (13) holes.

EFFECT: invention makes it possible to provide a low level of concentration ΝΟx by increasing the uniformity of temperatures in the combustion zone and excluding local overheating of the annular head, as well as to increase the reliability of starting and the stability of combustion of the combustion chamber.

1 cl, 3 dwg