IGNITER OF GASEOUS FUEL OF COMBUSTION CHAMBER OF GAS TURBINE ENGINE Russian patent published in 2023 - IPC F02C7/264 

FIELD: gas turbine engines.

SUBSTANCE: fuel igniters for combustion chambers of gas turbine engines (GTE) operating on gaseous fuel. The igniter of the gaseous fuel of the combustion chamber of a gas turbine engine contains a housing in which the ignition chamber is located, ending at the outlet with a flame transfer pipe, the sleeve of which fits into a hole made in the wall of the flame tube of the combustion chamber; a spark plug, a nozzle for atomizing fuel, and the combustion chamber is equipped with air channels for the passage of air, characterized in that the length and angle of installation of the sleeve of the flame transfer pipe varies depending on the location of the torch supply, the air channels in the ignition chamber in terms of the flow area are halved, the air channels of the ignition chamber are made in a round shape, a nozzle is installed into the nozzle fitting, the flame transfer pipe is connected to the body using flanges tightened with screws, through the housing flange and the flange of the flame transfer pipe there are through mounting holes, in the flange of the flame transfer pipe there is a groove with an O-ring installed in it, the ignition chamber inside the housing is secured with a screw connection, the other partly installed in the annular groove of the flame transfer pipe, the flame transfer pipe sleeve is installed in a floating bushing, limited by a holder and located in an enlarged hole in the wall of the flame tube, the flame transfer pipe contains a step, the height of which is set depending on the thickness of the combustion chamber body, in the lower part of the flame transfer pipe contains air supply holes.

EFFECT: ensuring the possibility of non-coaxial positioning of the body and the bushing of the flame transfer pipe, ensuring the installation of the igniter at any angle to the wall of the flame tube, ensuring the reliability of the installation design of the bushing of the flame transfer pipe in the opening of the flame pipe, ensuring the tightness of the joints between the elements of the igniter, ensuring operation on gaseous fuel, ensuring the fastening of the igniter on the combustion chamber body using a bolted connection, ensuring that the flow path between the combustion chamber body and the flame tube is not obstructed by the igniter elements, the igniter’s maintainability.

1 cl, 2 dwg