Patents Assigned to Hitachi Life Corporation
  • Turbine-unit disassembling method and turbine unit
    Patent number: 6837673
    Abstract: Supports are provided on the upper outer casing of each turbine of a turbine unit, and the upper inner casing of the turbine is temporarily placed on the supports of the upper outer casing, which is temporarily placed on the operating floor. By placing the casings temporarily in that way, a large space can be secured for the inspection of the turbine unit, and the inspection can be carried out quickly, which increases the operation ratio of the whole plant including the turbine unit. This invention is useful mainly for turbine units and their overhaul.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: January 4, 2005
    Assignees: Hitachi, Ltd., Hitachi Life Corporation, Hitachi Engineering Co., Ltd.
    Inventors: Tatsuya Ootoshi, Takanori Aramaki, Sakae Ebata, Norihide Tooyama
  • Method of disassembling turbine equipment and the turbine equipment
    Patent number: 6609878
    Abstract: Supports are provided on the upper outer casing of each turbine of a turbine unit, and the upper inner casing of the turbine is temporarily placed on the supports of the upper outer casing, which is temporarily placed on the operating floor. By placing the casings temporarily in that way, a large space can be secured for the inspection of the turbine unit, and the inspection can be carried out quickly, which increases the operating ratio of the whole plant including the turbine unit. This invention is useful mainly for turbine units and their overhaul.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: August 26, 2003
    Assignees: Hitachi, Ltd., Hitachi Life Corporation, Hitachi Engineering Co., Ltd.
    Inventors: Tatsuya Ootoshi, Takanori Aramaki, Sakae Ebata, Norihide Tooyama