Method and device for controlling combustors for gas-turbine

• Main Authors: IWAI, KAZUMI, INOUE, HIROSHI, TSUKAHARA, SATOSHI
• Format: Patent
• Language: English; French; German
• Published: 03.06.1992
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION APPARATUS; COMBUSTION ENGINES; COMBUSTION PROCESSES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; ENGINE PLANTS IN GENERAL; GAS-TURBINE PLANTS; GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; WEAPONS

A method for controlling a plurality of combustors supplying pressurized gas to a gas turbine, each of which combustors includes a first air supply for supplying combustion air into the combustors, and a second air supply for adjusting the amount of air supplied into the combustor to change a combustion condition in the combustor, which comprises the steps of: measuring the combustion condition of each of the combustors, measuring the difference between the measured combustion condition of each of the combustors and a desired combustion condition, and changing the rate of air supplied into the combustor by the second air supply in each of the combusors according to the measured differences of each of the combustors, to change the combustion condition of each of the combustors to the desired combustion condition.