METHOD FOR DIAGNOSING THE EXTINCTION OF A LOW-EMISSION COMBUSTION CHAMBER OF A GAS TURBINE ENGINE AT STARTUP Russian patent published in 2022 - IPC F02C9/46 

FIELD: gas turbine engines.

SUBSTANCE: invention relates to the field of control of gas turbine engines used as power units in the gas and energy industries. The method comprises measuring the gas temperature downstream of the high-pressure turbine Tc with thermocouples, measuring the high-pressure rotor speed Nhp. Additionally, the air temperature after the compressor Tc is measured, which is compared with the temperature Tm of each thermocouple behind the high-pressure turbine, and if the maximum temperature deviation Tmax deviates by a predetermined value for any of the thermocouples, a logical signal is generated within 0.4-0.7 seconds to extinguish low-emission combustion chamber, provided that Nhp < 9000 rpm. In addition, the temperature deviation Tm of each thermocouple downstream of the high-pressure turbine is measured within 0.4-0.7 seconds, 75-85°C is used as a predetermined limit temperature deviation Tmax.

EFFECT: invention makes it possible to increase the reliability of the algorithm for controlling the extinction of a low-emission combustion chamber in terms of the rotor speed and temperature behind the turbine and, in general, to increase the reliability of a gas turbine engine.

3 cl, 1 dwg