FUEL NOZZLE, END FUEL NOZZLE UNIT, AND GAS TURBINE Russian patent published in 2017 - IPC F23R3/14 F23R3/28 

FIELD: power industry.

SUBSTANCE: fuel nozzle for the combustion chamber comprises a combustion tube and a central annular element disposed concentrically in mentioned combustion tube. Mentioned annular element extends along the central longitudinal axis of the fuel nozzle and at least partially defines a flow passage for cooling air passing through the annular central element. The end diffusing unit, disposed at the downstream end of an annular central element, comprises a reflecting plate and a cover; mentioned reflecting plate and the cover at least partially define a cooling cavity therebetween. The cooling holes for providing fluid communication between the passage for the cooling air and the cooling cavity go through reflecting plate. Also diffusing terminal assembly for a fuel nozzle and a gas turbine is presented.

EFFECT: invention allows to improve the device of the central annular element, and also allows to improve the method of cooling the end portion of the central element.

20 cl, 10 dwg