COMBUSTION CHAMBER OF A GAS TURBINE, A GAS TURBINE AND A METHOD OF CONTROLLING A COMBUSTION CHAMBER OF A GAS TURBINE

摘要

FIELD: turbines.;SUBSTANCE: combustion chamber of gas turbine includes diffusion burner, diffusion gas regulating valve, pre-mixing burner, gas-regulating pre-mixing valve, combustion chamber flame tube, control device. Control device controls diffusion gas regulating valve and gas control valve of preliminary mixing and is configured to control the premix fuel ratio to reduce the degree of opening of the gas mixing regulating valve and increase the opening degree of the diffusion gas regulating valve so that the sum of the fuel flows fed into the diffusion burner and the premix burner remains unchanged, in case when determined value of thermometer or rate of increase of determined value exceeds corresponding preset value.;EFFECT: invention is aimed at flame damping occurring in premixing chamber, prevention of gas turbine output power reduction related to flame extinguishing.;11 cl, 16 dwg