Patents by Inventor Miharu Matsuoka

Miharu Matsuoka 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).

  • Single-shaft combined plant
    Patent number: 6679046
    Abstract: A single-shaft combined plant having an emergency shut-off oil system is provided. The emergency shut-off oil system is constituted such that when a steam governing valve tripping electromagnetic valve is opened, only a steam turbine is stopped; a master tripping electromagnetic valve is connected to a fuel gas control valve emergency shut-off oil line, a fuel oil control valve emergency shut-off oil line, and a steam governing valve emergency shut-off oil line via check valves; and when the master tripping electromagnetic valve is opened, both the steam turbine and a gas turbine are stopped. Thus, only the steam turbine can be stopped. Even if a tripping valve provided on the fuel gas control valve emergency shut-off oil line or the fuel oil control valve emergency shut-off oil line does not open because of a breakdown, the gas turbine can be stopped reliably.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: January 20, 2004
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Satoshi Tanaka, Miharu Matsuoka
  • Single-shaft combined plant
    Publication number: 20030014962
    Abstract: A single-shaft combined plant having an emergency shut-off oil system is provided. The emergency shut-off oil system is constituted such that when a steam governing valve tripping electromagnetic valve is opened, only a steam turbine is stopped; a master tripping electromagnetic valve is connected to a fuel gas control valve emergency shut-off oil line, a fuel oil control valve emergency shut-off oil line, and a steam governing valve emergency shut-off oil line via check valves; and when the master tripping electromagnetic valve is opened, both the steam turbine and a gas turbine are stopped. Thus, only the steam turbine can be stopped. Even if a tripping valve provided on the fuel gas control valve emergency shut-off oil line or the fuel oil control valve emergency shut-off oil line does not open because of a breakdown, the gas turbine can be stopped reliably.
    Type: Application
    Filed: June 19, 2002
    Publication date: January 23, 2003
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Satoshi Tanaka, Miharu Matsuoka