METHOD OF CONTROLLING FUEL SUPPLY TO COMBUSTION CHAMBER OF GAS TURBINE ENGINE Russian patent published in 2025 - IPC F02C9/26 

FIELD: engines.

SUBSTANCE: invention relates to gas turbine engine control means, in particular to control of fuel supply, and can be used in development of devices for control of fuel supply to combustion chamber of gas turbine engine, including for gas transfer stations. Disclosed is a method for controlling the supply of fuel to the combustion chamber of a gas turbine engine, in accordance with which the fuel consumption is changed depending on the power of the engine, for this purpose, fuel is dosed to the manifold to the pilot burners and to the manifolds to the main burners, in which fuel is pre-mixed with air, wherein from the starting mode to mode of 0.5 nominal fuel is supplied to the manifold to the pilot burners, then, fuel is fed into the manifolds to the main burners and to nominal mode, fuel supply to the main burners is increased and to the pilot burners is reduced. At the same time, besides fuel supply through the summing batcher to the main and to the pilot burners, fuel is supplied to the manifold to the pilot burners through the bypass, bypassing the summing batcher. Moreover, fuel flow through the main bypass pipeline is controlled by a valve, and fuel supply is maintained on the auxiliary bypass pipeline through a supply washer. Thus, based on analysis of fuel composition and its calorific value, fuel flow rate through the bypass is determined, and in case of abrupt drift to low gas, fuel supply is maintained through a throttle supply washer installed on the auxiliary bypass pipeline.

EFFECT: minimization of level of harmful emissions of nitrogen oxides, provision of stable combustion and high completeness of fuel combustion, especially at start-up and variable modes at any composition of gas, as well as exclusion of combustion chamber extinction in case of abrupt departure to low gas.

4 cl, 1 dwg