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AssigneeHitachi, Ltd.
InventorsNaohiko Iwata, Yasuhiko Otawara, Akira Shimura, Nobuyuki Iizuka, Isao Sato, Fumiyuki Hirose, Minoru Takaba, Yasutaka Komatsu, Hiraku Ikeda, Takeshi Iwamiya, Takeshi Ishida
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A gas turbine apparatus has a gas turbine and a plurality of burners for providing combustion gas to drive the turbine. A flow control means of each burner for fuel or combustion air is adjusted by control means to control each said burner individually in dependence on a predetermined combustion characteristic of the respective burner. Sensed quantities relating to the combustion performance of the burners are input to the control means which adjusts the flow control means of each burner in dependence on the sensed quantities and the predetermined combustion characteristic of the respective burner.
A gas turbine apparatus having a gas turbine, a plurality of burners for providing combustion gas to drive said turbine, flow control means of each said burner for at least one of fuel and combustion air, and control means for adjusting said flow control means of each said burner individually in dependence on a predetermined combustion characteristic of each respective burner relating at least one of the fuel and combustion air to the burner to change in desired turbine load, wherein said flow control means controls the flow of at least combustion air and comprises a movable member for regulating air flow rate, an electric servo motor mounted on a burner casing and electrically connected to said control means, a transmission mechanism mechanically connected to said servo motor and said movable member for converting rotation of said servo motor into linear motion and transmitting the linear motion to said movable member, and means for detecting the position of said movable member and feeding the detected position back to said control means.
A gas turbine apparatus having a gas turbine, a plurality of burners for providing combustion gas to drive said turbine, flow control means of each said burner for at least one of fuel and combustion air, sensing means for sensing at least two quantities relating to the combustion performance of said burners, and control means for adjusting said flow control means of each said burner individually in dependence on said at least two of said sensed quantities, wherein said flow control means controls the flow of at least combustion air and comprises a movable member for regulating air flow rate, an electric servo motor mounted on a burner casing and electrically connected to said control means, a transmission mechanism mechanically connected to said servo motor and said movable member for converting rotation of said servo motor into linear motion and transmitting the linear motion to said movable member, and means for detecting the position of said movable member and feeding the detected position back to said control means.
A gas turbine apparatus having a gas turbine and a plurality of burners for providing combustion gas to drive said turbine, flow control means of each said burner for at least one of fuel and combustion air, each said burner having a plurality of combustion stages comprising a first combustion stage and a second combustion stage, and said apparatus further having sensing means for sensing at least one quantity relating to the combustion performance of said burners and control means for controlling said flow control means for combustion air in said first combustion stage and said second combustion stage separately in dependence on sensed values of said at least one quantity.
A method of controlling a gas turbine apparatus having a gas turbine and a plurality of burners supplying combustion gases thereto, wherein each said burner has at least a first combustion stage and a second combustion stage, said method comprising during operation sensing at least one quantity related to combustion performance of said burners and adjusting combustion air flow rates in said first and second combustion stages of said burners separately on the basis of said sensed quantity.
Dependencies are inferred from the claim text.