초록 ▼

A gas turbine combustor has a premixing burner for jetting out a premixed gas of fuel and air. A stabilizer forms a circulation of combustion gas generated by combustion of the premixed gas at the downstream side of the stabilizer to stabilize flame formed by the combustion of the premixed gas. Befo

A gas turbine combustor has a premixing burner for jetting out a premixed gas of fuel and air. A stabilizer forms a circulation of combustion gas generated by combustion of the premixed gas at the downstream side of the stabilizer to stabilize flame formed by the combustion of the premixed gas. Before the operation of the combustor, a relationship between a temperature of the stabilizer and combustion conditions of the premixed gas is checked. Thereafter during operation of the combustor, the temperature of the stabilizer is measured during combustion and the combustion conditions are checked according to only the measured temperature of the stabilizer and the aforesaid relationship. The stabilizer has a heat receiving surface at the most downstream side thereof. The temperature of a portion of the stabilizer around the heat receiving surfaces measured to allow an accurate assessment of the combustion conditions.

대표청구항 ▼

[ What is claimed is:] [1.] A gas turbine combuster comprising:a plurality of premixing burners, each for jetting out a premixed gas of fuel and air;a plurality of premixing fuel lines connected to said Plurality of premixing burners, respectively, each said premixing fuel line having a fuel flow ad

[ What is claimed is:] [1.] A gas turbine combuster comprising:a plurality of premixing burners, each for jetting out a premixed gas of fuel and air;a plurality of premixing fuel lines connected to said Plurality of premixing burners, respectively, each said premixing fuel line having a fuel flow adjusting device;a stabilizer for forming a circulation of combustion gas generated through combustion of said premixed gas, said stabilizer having an annular shape and a heating surface at a most downstream portion of said stabilizer, said stabilizer being disposed so that at a downstream side of said stabilizer the premixed gas jetted from each said premixing burner flows downstream of said stabilizer through inner and outer sides of said stabilizer;means for setting, before a practical operation of said combustor, a relationship between a temperature of said stabilizer and combustion conditions of a premixed gas;a plurality of thermometers arranged in said stabilizer close to said heating surface to be circumferentially distant from each other;means for adjusting a fuel flow rate to each said premixing burner according to said relationship and a detected temperature of said stabilizer at a position corresponding to each said premixing burner; andmeans for stopping fuel supply to all of said plurality of premixing burners when a temperature of said stabilizer detected by any one of said plurality of thermometers is a preset value or larger.