ANNULAR COMBUSTION CHAMBER OF GAS TURBINE ENGINE Russian patent published in 2024 - IPC F23R3/50 

FIELD: gas turbine engine building.

SUBSTANCE: invention relates to designs of combustion chambers of gas turbine engines, ground gas turbine engines used as a drive of a supercharger of a gas compressor unit or an electric generator. Annular combustion chamber consists of external and internal housing, diffuser, common fuel manifold, flame tube, including outer and inner rings with holes for air supply, spacer plates, corrugated tapes, outer and inner casings, inner and outer pockets, upper and lower sealing rings, retainers for suspension of flame tube, fuel injectors, annular head of flame tube containing front plate with external and internal fuel manifolds, gas supply nozzle to the internal cavity of the external collector, uniformly arranged in two rows shaped air supply openings, with central holes and posts for attachment of nozzles to annular head by means of castellated nut. In the front plate there are four channels connecting the inner fuel manifold cavity with the outer one, a cone-cylindrical nozzle with the nozzle wall thickness is installed in the nozzle, twice the thickness of the conical part, a sprayer with radial holes is installed in the nozzle body, on the outer and inner rings of the flame tube of the air supply holes, flanges are made with a length in relation to the diameter of the hole, which is equal to D/L=1.6, at the inlet to the combustion chamber there is a tear-off diffuser, on the annular head visors the heat-protective coating is applied, the sealing rings have platforms for contact with the damping rings.

EFFECT: invention allows reducing content of nitrogen oxides and carbon monoxide in combustion products and improving combustion chamber reliability.

1 cl, 3 dwg