LOW-EMISSION COMBUSTION CHAMBER AND METHOD OF FEEDING FUEL THEREIN Russian patent published in 2019 - IPC F23R3/28 F02C9/26 

FIELD: machine building.

SUBSTANCE: low-emission combustion chamber of gas turbine engine includes at least two fuel collectors: main and pilot, fuel redistribution valve, at least two burner devices, each of which is equipped with curved channel formed by two profiled shells. Inner surface of curvilinear channel is conjugated with central body of burner device, on which axial swirler and tubes of fuel supply to flow part of burner device from main fuel collector are installed. On external surface of curvilinear channel there arranged is levelling header for fuel supply through corresponding tubes from pilot collector to flow part of burner device, which is connected to the flame tube, having air supply holes, inside which a coaxial to it screen is located, consisting of a transverse annular part and a longitudinal cylindrical part. Screen and fire tube form air flow cavity. At the inlet of the flame tube coaxially to the burner device there is a silencer consisting of interconnected first and second annular volumes and an annular slot, one end of which extends into the inner volume of the flame tube, and the other end is connected to the first annular volume.

EFFECT: invention is aimed at improvement of reliability of combustion chamber and increase in its service life at maintaining low level of nitrogen oxides emissions at modes close to maximum engine load, by means of reduction of pressure pulsations in combustion chamber and prevention of carbonization on output parts of burner devices.

2 cl, 1 dwg