초록 ▼

A gas turbine combustor having a fuel injection nozzle for diffusion combustion disposed in a central portion of the combustor and an annular premixed nozzle disposed in an outer peripheral portion of the fuel injection nozzle for injecting a mixed gas of fuel and air. The annular premixed nozzle in

A gas turbine combustor having a fuel injection nozzle for diffusion combustion disposed in a central portion of the combustor and an annular premixed nozzle disposed in an outer peripheral portion of the fuel injection nozzle for injecting a mixed gas of fuel and air. The annular premixed nozzle includes an annular premixing chamber and a plurality of premixed fuel nozzles for injecting fuel into the annular premixing chamber. The annular premix nozzle is divided by a partition (108) to form a plurality of premixing chambers each adjacent to the fuel injection nozzle for diffusion combustion. Each of the premixing chambers includes at least one of the premixed fuel nozzles. A mechanism is provided for supplying fuel to a predetermined number of the premixing chambers in a low load operation of the gas turbine and for supplying fuel to all of the premixing chambers in a high load operation.

대표청구항 ▼

[ What is claimed is:] [1.] A gas turbine combustor having a fuel injection nozzle for diffusion combustion disposed in a central portion of the combustor, and an annular premixed nozzle disposed adjacent an outer peripheral portion of the fuel injection nozzle for injecting mixed gas of fuel and ai

[ What is claimed is:] [1.] A gas turbine combustor having a fuel injection nozzle for diffusion combustion disposed in a central portion of the combustor, and an annular premixed nozzle disposed adjacent an outer peripheral portion of the fuel injection nozzle for injecting mixed gas of fuel and air without any other nozzle intervening between said fuel injection nozzle and said annular premixed nozzle, whereinsaid annular premixed nozzle comprises an annular premixing chamber and a plurality of premixed fuel nozzles for injecting fuel into said annular premixing chamber, and is divided in a circumferential direction by partition means to form a plurality of premixing chambers each adjacent to said fuel injection nozzle for diffusion combustion so that premixed gas from said premixing chamber directly contacts a flame from said fuel injection nozzle, each of said premixing chambers including at least one of said premixed fuel nozzles; anda mechanism is provided for supplying fuel to a predetermined number of said premixing chambers in a low load operation of the gas turbine, and for supplying fuel to all of said premixing chambers in a high load operation.