초록 ▼

A gas-turbine combustor (1) provided with a plurality of premix burners (2-a, 2-b) and a diffusion burner (8) and capable of varying the number of the operating premix burners according to the variation of load thereon comprises fuel pipes (3-a, 3-b, 9) connected to the burners, flow control valves

A gas-turbine combustor (1) provided with a plurality of premix burners (2-a, 2-b) and a diffusion burner (8) and capable of varying the number of the operating premix burners according to the variation of load thereon comprises fuel pipes (3-a, 3-b, 9) connected to the burners, flow control valves (4-a, 4-b, 10) placed respectively in the fuel pipes, a pressure control valves (6, 12) placed in fuel pipes (5, 11), a fuel distribution setting device (14) for controlling the respective openings of the flow control valves according to load, and a pressure ratio setting device (15) for controlling the respective openings of the pressure control valves when the condition of the flow control valves is changed.

대표청구항 ▼

[ What is claimed is:] [1.] A gas-turbine combustor provided with a plurality of premix burners and one diffusion burner, and capable of varying the number of the operating premix burners according to the variation of load thereon, said combustor comprising:fuel pipes connected to the burners;fuel f

[ What is claimed is:] [1.] A gas-turbine combustor provided with a plurality of premix burners and one diffusion burner, and capable of varying the number of the operating premix burners according to the variation of load thereon, said combustor comprising:fuel pipes connected to the burners;fuel flow control valves placed respectively in the fuel pipes;pressure control valves placed in a main fuel pipe connected to the fuel pipes for the premix burners and the fuel pipe for the diffusion burner, respectively, to control pressures in the fuel pipes; anda fuel distribution ratio setting device for controlling the respective openings of the flow control valves according to load; anda pressure ratio setting device containing means for controlling the respective openings of the pressure control valves when the number of the operating premix burners is changed.