BURNER MODULE WITH A DOUBLE-WALLED ATOMIZER OF A LOW-EMISSION MULTI-MODULE COMBUSTION CHAMBER Russian patent published in 2023 - IPC F23R3/00 

FIELD: gas turbine engines.

SUBSTANCE: present invention relates to ground-based gas turbine engines and can be used for combustion of pre-mixed gaseous air-fuel mixtures in the combustion chambers of gas turbine engines and gas turbine plants. The burner module with a double-walled atomizer of a low-emission multi-module combustion chamber contains a radial swirler with blades located at the inlet to the mixing channel and set at an angle α, while the ratio of the outer diameter dl of the inner wall of the mixing channel to the inner diameter D of its outer wall is within 0.55…0.65. It additionally contains a double-walled pilot fuel atomizer located flush with the end face of the outer wall of the burner module, consisting of an atomizer with a fuel hole and a perforated wall, in which the holes are arranged collinear with the axis of the burner module, and the holes in the perforated wall have a two-row arrangement at relative heights 0, 9 and 0.6 and in a quantitative ratio between the rows are distributed in a ratio of 2 to 1, respectively, while the ratio of the total area of the holes in the perforated wall to the area of the hole in the atomizer is in the range of 0.75…0.9. A thermal barrier coating is applied to the outer wall of the atomizer.

EFFECT: invention makes it possible to ensure reliable ignition and stable operation of the combustion chamber at low modes, as well as efficient cooling of the burner module atomizer.

2 cl, 5 dwg