COMBUSTION CHAMBER Russian patent published in 1997 - IPC

FIELD: power, transport and chemical engineering. SUBSTANCE: combustion chamber contains register burner 1 with bladed air swirler 2 and frame tube 3 on which air control branch pipes are fitted. Flame tube and burner are located in housing 5 of combustion chamber. Air from compressor enters housing 5 where it is partially swirled by means of swirler 2: twisted jets enter fire zone to which propellant is simultaneously fed through propellant dispensing device of burner 1. At a distance from burner less than Xo, propellant-and-air mixture is close to stoichiometric by its composition which makes flame stable. At a distance Xo, air is fed to near-axis high-temperature zone through branch pipe 4; as a result, temperature in zone reduces to level at which rate of formation of nitrogen oxides reduces at intensive combustion and high completeness of combustion. Reduction of emission of nitrogen oxides at optimal oxides at optimal characteristics of combustion is achieved due to angle of setting, diameter and number of air supply branch pipes 4 which are determined according to the formulae given in the Description. Upon completion of combustion, combustion products are diluted by air through holes in mixer of flame tube to preset turbine inlet temperature. EFFECT: keeping toxicity of gas turbine exhaust within preset limits. 1 dwg