METHOD FOR TESTING TWO-STAGE LOW-EMISSION COMBUSTION CHAMBER OF GAS TURBINE PLANT Russian patent published in 2024 - IPC G01M15/14 F23R3/34 

FIELD: power engineering.

SUBSTANCE: invention relates to power engineering and aircraft engine building and can be used in development and adjustment of low-emission combustion chambers. Method consists in supply of fuel and air into combustion chamber, ignition of fuel-air mixture, increase of fuel and air flow rate to steady-state combustion process, successive supply of fuel to at least one additional burner of combustion chamber, increase of its flow rate till achievement of nominal mode of operation and determination of level of gas pressure pulsations in flame tube of combustion chamber, from which the beginning of vibration burning mode is determined and fuel flow rate in burners is regulated. At that, a series of tests is carried out, during the test, when the rated operating mode of the combustion chamber in the additional burners is achieved, gas analysis of combustion products is carried out, determining volumetric concentrations of carbon monoxide and unburned hydrocarbons, total air flow rate through the combustion chamber and total fuel flow rate through the burners and by calculation indices of carbon oxide emission of unburned methane and fuel combustion completeness coefficient are determined by the corresponding formulas. When the obtained values are achieved for each fuel combustion completeness value, the nitrogen oxide emission value is determined and the obtained values are compared with the standardized limit values.

EFFECT: development of a method for testing a two-stage low-emission combustion chamber of a gas turbine plant, which provides higher accuracy of determining emission characteristics and ensuring stability of combustion of the combustion chamber of a gas turbine plant.

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