| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas turbine combustor capable of achieving improvement of combustion performance of the gas turbine combustor and reduction of NOx emission while avoiding complication of operation control and increase of a manufacturing cost.SOLUTION: A gas turbine combustor includes: a burner plate in which a plurality of air holes are formed; and a burner in which a plurality of fuel nozzles are provided for injecting fuel towards the air holes of the burner plate and the fuel nozzles and the air holes are disposed coaxially so as to inject the fuel and air to a combustion chamber as a plurality of coaxial jet streams. In the gas turbine combustor, two systems of a burner central part fuel system and a burner outer peripheral part fuel system are disposed as a fuel supply system. The burner central part fuel system supplies the fuel to a burner central part that becomes a burner axial center side, and the burner outer peripheral part fuel system supplies the fuel to a burner outer peripheral part that becomes the outer peripheral side of the burner central part. In the burner outer peripheral part fuel system, a pressure regulation valve for regulating the pressure of the fuel and a flow control valve for controlling the flow of the fuel are installed. The burner central part fuel system is configured by being branched from the burner outer peripheral part fuel system in the upstream part of the pressure regulation valve and further installing a throttle part in the burner central part fuel system. |
