PURPOSE: To contrive stabilized combustion as well as the reduction of generation of NOx in a burner by a method wherein the fuel-air ratio in a plurality of burners provided in a combustion mechanism is controlled with respect to every burners while considering external factors (heating value of fuel, atmospheric temperature and the like), affecting to the fuel-air ratio.
CONSTITUTION: A plurality of burners 3, provided in a gas turbine 2, are provided respectively with an internal flow rate controller(IFC) 42 and an IFC driver 17. An IFC opening degree setter 29, which has received a fuel commanding signal, determines a reference flow rate of air by the referance function of flow rate of fuel, which is necessitated for the load of the gas turbine, and sets the opening degree of a reference movable piece while a corrector 31 and an adder 32 correct the opening degree of reference movable piece by external factors 30, then, output the corrected opening degree of the reference movable piece to the IFC driver 17. The IFC driver 17 moves a movable piece 28 based on the corrected opening degree of referance movable piece whereby the optimum flow rate of air flows into a premixture gas forming chamber.
IWATA NAOHIKO
IKEDA HIROSHI
KOMATSU YASUTAKA
IIZUKA NOBUYUKI
SHIMURA AKIRA
SHIROMARU ISAO
SHIROKURA SHIGEO
KONDO HIROSHI
TORIIE CHIKAMASA
HORIUCHI KAZUYUKI
CHUGOKU ELECTRIC POWER