PURPOSE: To provide a gas turbine combustion device of small size that has excellent flame stability and the characteristics of low NOx generation.
CONSTITUTION: A cylindrical combustion device 5 centers a pilot burner 6 constituted by a fuel injection nozzle 6a and an air injection nozzle 10, wherein a premixing device 1 is disposed so as to encircle the pilot burner 6. The premixing device 1 consists of a plurality of circumferentially divided premixing chambers and each of the premixing chambers includes a fuel injection nozzle 2 on the inlet side thereof, and a mixing acceleration structure 7 is provided around the nozzle 2. Combustion air 3 is fed into the premixing device 1 from the inlet thereof and fuel 4 is injected from the nozzle 2. The injected fuel 4 runs against the structure 7 to form a jet flow, which flow is mixed with the combustion air 3 to form a premixed gas.
OTSUKA MASAYA
INAGE SHINICHI
