Patents by Inventor Takafumi Uda

Takafumi Uda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Valve control device, gas turbine, and valve control method
    Patent number: 9732676
    Abstract: A valve control device is provided in a gas turbine having a combustor for generating combustion gas, a turbine driven by the combustion gas generated by the combustor, a flow rate regulating valve for regulating the flow rate of the fuel to be supplied to the combustor, and a pressure regulating valve disposed upstream of the flow rate regulating valve, for regulating the fuel pressure. The valve control device controls the opening degree of the valve. The valve control device includes a load decrease detection part which detects a load decrease of the gas turbine, and a pressure control part which controls the opening degree of the valve in accordance with the output of the gas turbine. The valve control device suppresses instability of the gas turbine output even when the load rapidly decreases.
    Type: Grant
    Filed: November 22, 2012
    Date of Patent: August 15, 2017
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Akihiko Saito, Takashi Sonoda, Takafumi Uda, Fuminori Fujii
  • VALVE CONTROL DEVICE, GAS TURBINE, AND VALVE CONTROL METHOD
    Publication number: 20140230449
    Abstract: A valve control device is provided in a gas turbine having a combustor for generating combustion gas, a turbine driven by the combustion gas generated by the combustor, a flow rate regulating valve for regulating the flow rate of the fuel to be supplied to the combustor, and a pressure regulating valve disposed upstream of the flow rate regulating valve, for regulating the fuel pressure. The valve control device controls the opening degree of the valve. The valve control device includes a load decrease detection part which detects a load decrease of the gas turbine, and a pressure control part which controls the opening degree of the valve in accordance with the output of the gas turbine. The valve control device suppresses instability of the gas turbine output even when the load rapidly decreases.
    Type: Application
    Filed: November 22, 2012
    Publication date: August 21, 2014
    Applicant: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Akihiko Saito, Takashi Sonoda, Takafumi Uda, Fuminori Fujii