Patents by Inventor Osamu Wakazono

Osamu Wakazono 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).

  • Steam cooled type combined cycle power generation plant and operation method thereof
    Publication number: 20010042369
    Abstract: A combined cycle power generation plant comprises a waste heat recovery boiler (20) having a stabilizing burner (25) at an upstream position thereof. The stabilizing burner is ignited during the time of start-up and speed increase of a gas turbine (11) so that steam generation at the waste heat recovery boiler is accelerated. The steam is used effectively for cooling the gas turbine, driving a steam turbine, and for gland steam. In addition, exhaust steam from the steam turbine is also used to cool the gas turbine. Consequently, the time for the plant to reach a full load can be shortened.
    Type: Application
    Filed: July 25, 2001
    Publication date: November 22, 2001
    Inventors: Osamu Wakazono, Yasushi Fukuizumi
  • Combined cycle power plant with steam-cooled gas turbine
    Patent number: 6301874
    Abstract: A combined cycle power plant is disclosed, whose target high-temperature portion in the gas turbine can be reliably and sufficiently cooled, and in which the heat generated via the cooling can be reliably recovered, thereby improving the efficiency. Here, the exhaust gas from the high-pressure turbine is introduced as cool steam to the steam cooling system for cooling the target high-temperature portion in the gas turbine. This cooling process is efficiently and suitably performed by using the characteristic of the above high-pressure exhaust gas relating to quantity, pressure, or temperature.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: October 16, 2001
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Osamu Wakazono, Hideo Kimura, Yasushi Fukuizumi
  • Steam cooled type combined cycle power generation plant and operation method thereof
    Patent number: 6286297
    Abstract: A combined cycle power generation plant comprises a waste heat recovery boiler (20) having a stabilizing burner (25) at an upstream position thereof The stabilizing burner is ignited during the time of start-up and speed increase of a gas turbine (11) so that steam generation at the waste heat recovery boiler is accelerated. The steam is used effectively for cooling the gas turbine, driving a steam turbine, and for gland steam. In addition, exhaust steam from the steam turbine is also used to cool the gas turbine. Consequently, the time for the plant to reach a full load can be shortened.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: September 11, 2001
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Osamu Wakazono, Yasushi Fukuizumi