FUEL SUPPLY SYSTEM TO MULTI-COLLECTOR COMBUSTION CHAMBER Russian patent published in 2021 - IPC F02C7/236 

FIELD: fuel supply systems.

SUBSTANCE: invention relates to fuel supply systems in multi-collector combustion chambers of gas turbine engines. The fuel supply system contains a low-pressure pump with an adjustable electric drive, a controller and parallel-mounted high-pressure pumps with adjustable electric drives. The output of the low-pressure pump is connected to the input of each high-pressure pump, and the output of each high-pressure pump through a pipeline line is connected to the input of the corresponding collector of the combustion chamber. A shut-off valve with an electric inlet is installed in the outlet line of each of the high-pressure pumps. The controller is connected to the electrical inputs of all electric drives and shut-off valves. Each electric drive contains a hydraulic cooling input and output, and the output of the low-pressure pump is connected to the hydraulic cooling input of the electric drive of the low-pressure pump, the hydraulic cooling output of which is connected to the hydraulic cooling input of each electric drive of the high-pressure pump, and the input of each high-pressure pump is connected to the hydraulic cooling output of its electric drive. The outlet lines of each of the high-pressure pumps in front of the shut-off valve additionally include a non-return valve and are connected to each other by at least one jumper on which a valve with an electric inlet connected to the controller is installed.

EFFECT: increase in the reliability and maintenance of the efficiency of the fuel supply system to the multi-collector combustion chamber of the gas turbine engine in case of failure of any of the electric drive pumps.

2 cl, 1 dwg