CONTINUOUS-ACTION COMBUSTION CHAMBER Russian patent published in 2012 - IPC F23R3/36 

FIELD: power industry.

SUBSTANCE: continuous-action combustion chamber includes cylindrical housing with conical diffuser at the inlet, fuel-air mixture ignition device installed on the chamber wall and burner mating coaxially with diffuser at the inlet. Burner includes liquid and gaseous fuel supply systems each of which consists of auxiliary and main circuits equipped with fuel supply headers at the inlet and atomisers at the outlet. Along the burner axis there arranged is header with liquid fuel channel and central tube with gaseous fuel channel of auxiliary fuel supply circuits to combustion chamber through atomisers along the axis and on free tube face. Annular liquid and gaseous fuel mixing chamber of the main circuits and air is located coaxially to central tube and restricted on the outer side with the wall connected to combustion chamber diffuser inlet, and at the inlet -with front cover with radial air supply channel to mixing chamber inlet and at the outlet - with fuel-air mixture supply channel to the inlet of combustion chamber diffuser. Combustion chamber diffuser is formed with cone-shaped flame stabiliser with end wall along bigger base on free end of central tube and inlet part of combustion chamber diffuser. Mixing chamber outlet is equipped with device acting on fuel-air mixture, which is installed on central tube. Liquid fuel supply header of the main circuit is annular and located outside on end face of front cover of mixing chamber and interconnected with mixing chamber through annular channel with atomisers in central tube. Atomisers are located in mixing chamber on the pipe in circumferential direction. Gaseous fuel supply header of the main circuit is annular and located outside on periphery of the front cover of mixing chamber and interconnected through fuel channels with atomisers in mixing tubes located in a circumferential direction coaxially to burner axis between front cover and external wall of mixing chamber at mixing chamber inlet. Axes of atomisers in mixing tubes are located at straight angle to longitudinal axis of mixing chamber. Gaseous fuel supply header of auxiliary circuit is annular and arranged outside on the edge of liquid fuel supply header of the main circuit and interconnected by means of annular channel in central tube with atomisers located in circumferential direction on the periphery of flame stabiliser edge. Device acting on fuel-air mixture at mixing chamber outlet is made in the form of mixer with longitudinal triangular corrugated waves of U-profile in cross section uniformly located in circumferential direction of flame stabiliser and each of which is fixed with one side of triangle on external cone-shaped surface of flame stabiliser. End faces of U-shaped folds are arranged radially in plane of end face of cone-shaped flame stabiliser.

EFFECT: invention allows decreasing the smoking level and emission of hazardous substances in fuel combustion products of ground gas-turbine plants and jet turbine engines.

7 cl, 3 dwg