Unit two-cyclone premixed combustion nozzle for dry-type low-pollution combustion chamber of gas turbine

The invention relates to gas turbine combustion nozzles, in particular to a unit two-cyclone premixed combustion nozzle for a dry-type low-pollution combustion chamber of a gas turbine. In order to solve the problems that an existing gas turbine premixed combustion chamber is unstable in combustion, prone to backfire and flare-up, high in pollutant discharge and the like, the unit two-cyclone premixed combustion nozzle comprises a fueling injection assembly, a hydrocyclone assembly, an end divergent nozzle, a center blowing part, an outer cover, a first pipe, a second pipe and a third pipe. The first pipe, the second pipe and the third pipe are arranged on the left side of the fueling injection assembly and are all connected with the fueling injection assembly. The hydrocyclone assembly is arranged on the right side of the fueling injection assembly. The end divergent nozzle, the center blowing part and the outer cover are arranged on the right side of the hydrocyclone assembly. The probability of backfire and flare-up of the unit two-cyclone premixed combustion nozzle is lowered, low-load combustion is stable, and pollutant discharge of the combustion chamber is reduced. The structure is simple, and fault probability is low. The premixed combustion nozzle is suitable for the gas turbine combustion chambers.