Patents by Inventor Atsuo Kawahara

Atsuo Kawahara 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).

  • Heat exchanger tube panel module, and method of constructing exhaust heat recovery boiler using the same
    Patent number: 7357100
    Abstract: A necessary size and number of modules each obtained by housing a member including heat exchanger tube panels each comprising a heat exchanger tube bundle and headers for the heat exchanger tube bundle, an upper casing of an exhaust heat recovery boiler (HRSG), provided above the heat exchanger tube panels, heat insulators, and heat exchanger tube panel support beams provided on the upper surface of the upper casing into a transportation frame, are prepared according to design specifications of the HRSG, and side casings and a bottom casing except for the ceiling part casing are constructed in advance at a construction site of the HRSG, and the modules are suspended from above between adjacent support beams of the ceiling part to dispose the heat exchanger tube panel support beams of the modules at the set heights of the ceiling part support beams, and the support beams and the ceiling part support beams are connected and fixed via connecting steel plates, whereby the respective modules are transported to the
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: April 15, 2008
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Isao Waseda, Atsuo Kawahara, Mitsugi Musashi, Toshinori Shigenaka
  • Heat exchanger tube panel module, and method of constructing exhaust heat recovery boiler using the same
    Publication number: 20070119388
    Abstract: A necessary size and number of modules each obtained by housing a member including heat exchanger tube panels each comprising a heat exchanger tube bundle and headers for the heat exchanger tube bundle, an upper casing of an exhaust heat recovery boiler (HRSG), provided above the heat exchanger tube panels, heat insulators, and heat exchanger tube panel support beams provided on the upper surface of the upper casing into a transportation frame, are prepared according to design specifications of the HRSG, and side casings and a bottom casing except for the ceiling part casing are constructed in advance at a construction site of the HRSG, and the modules are suspended from above between adjacent support beams of the ceiling part to dispose the heat exchanger tube panel support beams of the modules at the set heights of the ceiling part support beams, and the support beams and the ceiling part support beams are connected and fixed via connecting steel plates, whereby the respective modules are transported to the
    Type: Application
    Filed: July 30, 2003
    Publication date: May 31, 2007
    Applicant: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Isao Waseda, Atsuo Kawahara, Mitsugi Musashi, Toshinori Shigenaka