Patents by Inventor Kyoichi Ikeno

Kyoichi Ikeno 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).

  • Publication number: 20200011205
    Abstract: A lifting jig can lift a rotor and a diaphragm of a steam turbine including a casing that covers the rotor that can be divided with a division surface and the diaphragm that can be divided into an upper half diaphragm and a lower half diaphragm with a division surface. A lifting jig has a diaphragm fixing unit that can be fixed to the upper half diaphragm, a first rotor supporting unit that is integrally formed with a diaphragm fixing unit and can support one end portion of the rotor in an axial direction, and a second rotor supporting unit that is integrally formed with the diaphragm fixing unit and can support the other end portion of the rotor in the axial direction.
    Type: Application
    Filed: July 3, 2019
    Publication date: January 9, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Yuichi Sasaki, Kyoichi Ikeno
  • Publication number: 20190249555
    Abstract: There is provided a turbine rotor blade assembly in which values A, CF, T, and L are set to satisfy the following expression in two-dimensional coordinates illustrated in FIG. 5, 1.2×105?(A×CF)/(T×L)?17×105, where (A×CF)/(T×L) is an expression (1), A is an arm length [mm] of each of turbine rotor blades, CF is centrifugal force [kgf] occurring on each of the turbine rotor blades, T is a thickness [mm] of each of shrouds, and L is a lap amount [mm] of the shrouds adjacent to each other.
    Type: Application
    Filed: December 22, 2016
    Publication date: August 15, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Nobuyori Yagi, Shin Yanagisawa, Yuki Nakamura, Kyoichi Ikeno
  • Publication number: 20190195680
    Abstract: An abnormality detection device includes a vibration measurement value acquisition unit configured to acquire a measurement value of vibration of a rotation shaft, which is measured by each of shaft vibration sensors provided to be spaced apart in a diameter direction of the rotation shaft with respect to an outer circumferential surface of the rotation shaft at positions spaced apart in a shaft direction of the rotation shaft, for each rotation angle of the rotation shaft, a vibration vector calculation unit configured to calculate a vibration vector indicating a rotation angle at which a vibration of the rotation shaft is a maximum and a magnitude of the vibration on the basis of the measurement value of the vibration, and an estimation unit configured to estimate an abnormality occurrence position in the shaft direction of the rotation shaft on the basis of a time change in the vibration vector.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 27, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Satoshi Saburi, Kyoichi Ikeno
  • Publication number: 20160186767
    Abstract: A method for producing a member for fluid machines, which includes: a coating step of applying a glass-based material to the surface of a base; a smoothing step of removing some of the glass-based material while heating and melting the glass-based material after the coating step; and a solidification step of solidifying the heated and melted glass-based material after the smoothing step.
    Type: Application
    Filed: July 23, 2014
    Publication date: June 30, 2016
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORP.
    Inventors: Toyoaki YASUI, Kyoichi IKENO
  • Patent number: 9322457
    Abstract: A turning device includes: a pinion gear having spur teeth that mesh with a wheel gear provided on a rotary shaft; an arm member that rotatably supports the pinion gear; an ON/OFF mechanism that operates the arm member such that the pinion is brought close to the wheel gear, in a meshed position, with respect to the wheel gear and such that the pinion is separated radially outward from the wheel gear, in a retracted position; and a supporting device that supports the pinion in an axial direction of the pinion.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: April 26, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Yuichi Sasaki, Kyoichi Ikeno, Ken Nishitani
  • Publication number: 20150053029
    Abstract: A turning device includes: a pinion gear having spur teeth that mesh with a wheel gear provided on a rotary shaft; an arm member that rotatably supports the pinion gear; an ON/OFF mechanism that operates the arm member such that the pinion is brought close to the wheel gear, in a meshed position, with respect to the wheel gear and such that the pinion is separated radially outward from the wheel gear, in a retracted position; and a supporting device that supports the pinion in an axial direction of the pinion.
    Type: Application
    Filed: February 22, 2012
    Publication date: February 26, 2015
    Inventors: Yuichi Sasaki, Kyoichi Ikeno, Ken Nishitani
  • Patent number: 8794924
    Abstract: A rotating body includes a rotor disk 10 that has a moving blade fitting groove 11 that is annularly provided along the outer circumference and a moving blade lead-in hole 12 that is provided in the outer circumference and is in communication with the moving blade fitting groove 11; a plurality of moving blades 20 that are consecutively provided in the outer circumference and that each have a blade root 21 that is fitted in the moving blade fitting groove 11 and a wing body 23 that projects to the outer side of the rotor disk 10; two special moving blades 20A and 20B that each have a blade root 21 of which a portion is fitted in the moving blade fitting groove 11 and a wing body 23 that projects to the outer side of the rotor disk 10, and that by mutually adjoining block the moving blade lead-in hole 12; and a tensioning key 13 that is inserted between the moving blades 20, in which the tensioning key 13 is provided with an insertion portion whose thickness dimension in the circumferential direction gradually
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: August 5, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yoichiro Tsumura, Kyoichi Ikeno
  • Patent number: 8512864
    Abstract: A component for a rotary machine which is configured such that a hard film composed of ceramics and an anti-fouling film composed of a fluorine-containing diamond-like carbon film are laminated on the surface of a base material, and which has superior drain erosion resistance and fouling resistance in an environment where a gas comes in direct contact therewith.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: August 20, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yuya Konno, Toyoaki Yasui, Kyoichi Ikeno
  • Patent number: 8292507
    Abstract: The bearing device has a bearing housing which is supported by a bearing base mounted on a body of a rotary machine equipped with a rotating shaft and through which the rotating shaft penetrates at the center and a plurality of pads which are arranged inside the bearing housing so as to circumferentially surround the rotating shaft and rotatably support the rotating shaft. A contact surface between an outer circumference of the bearing housing and an inner circumference of the bearing base extends along the axial direction of the rotating shaft and forms a convex curved surface protruding outward, and the bearing housing is slidably supported by the bearing base via the contact surface of the convex curved surface.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: October 23, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Takamasa Hirai, Sadamu Takahashi, Kyoichi Ikeno, Naoyuki Nagai
  • Patent number: 8043730
    Abstract: In a part for a rotary machine, a ceramic hard film is formed on a surface of a base material, the density of droplets which exist in a surface of the ceramic hard film is set to be within 1000 pieces/mm2, and the density of droplets whose mean particle diameter is 1 ?m or less is set to be within 550 pieces/mm2. A method for manufacturing the part of a rotary machine is a method for forming the ceramic hard film by at least an ion plating method or a sputtering method.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: October 25, 2011
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masaki Kawano, Toyoaki Yasui, Yuya Konno, Kyoichi Ikeno
  • Patent number: 7998581
    Abstract: A solid particle erosion resistant surface treated coating has a solid particle erosion resistance that is largely enhanced and a rotating member having the coating gains oxidation resistance without deteriorating a fatigue strength. Also, a rotating machine can have this coating applied thereto. The solid particle erosion resistant surface treated coating has a nitrided hard layer formed on a surface of a base material and a PVD (physical vapor deposition) hard layer of at least one layer formed on the nitrided hard layer by a PVD method. Deformation of the base material by collisions by solid particles is prevented and cracking of the coating is prevented. Thereby, the solid particle erosion resistance is secured, life of the solid particle erosion resistant surface treated coating can be increased and oxidation resistance and fatigue strength are enhanced.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: August 16, 2011
    Assignee: Mitsubishi Heavy Industires, Ltd.
    Inventors: Toyoaki Yasui, Yoshikazu Yamada, Shugo Iwasaki, Katsuyasu Hananaka, Kyoichi Ikeno
  • Publication number: 20110135946
    Abstract: A component for a rotary machine which is configured such that a hard film composed of ceramics and an anti-fouling film composed of a fluorine-containing diamond-like carbon film are laminated on the surface of a base material, and which has superior drain erosion resistance and fouling resistance in an environment where a gas comes in direct contact therewith.
    Type: Application
    Filed: January 20, 2009
    Publication date: June 9, 2011
    Inventors: Yuya Konno, Toyoaki Yasui, Kyoichi Ikeno
  • Publication number: 20110019950
    Abstract: The bearing device has a bearing housing which is supported by a bearing base mounted on a body of a rotary machine equipped with a rotating shaft and through which the rotating shaft penetrates at the center and a plurality of pads which are arranged inside the bearing housing so as to circumferentially surround the rotating shaft and rotatably support the rotating shaft. A contact surface between an outer circumference of the bearing housing and an inner circumference of the bearing base extends along the axial direction of the rotating shaft and forms a convex curved surface protruding outward, and the bearing housing is slidably supported by the bearing base via the contact surface of the convex curved surface.
    Type: Application
    Filed: February 4, 2009
    Publication date: January 27, 2011
    Inventors: Takamasa Hirai, Sadamu Takahashi, Kyoichi Ikeno, Naoyuki Nagai
  • Publication number: 20110008171
    Abstract: A rotating body includes a rotor disk 10 that has a moving blade fitting groove 11 that is annularly provided along the outer circumference and a moving blade lead-in hole 12 that is provided in the outer circumference and is in communication with the moving blade fitting groove 11; a plurality of moving blades 20 that are consecutively provided in the outer circumference and that each have a blade root 21 that is fitted in the moving blade fitting groove 11 and a wing body 23 that projects to the outer side of the rotor disk 10; two special moving blades 20A and 20B that each have a blade root 21 of which a portion is fitted in the moving blade fitting groove 11 and a wing body 23 that projects to the outer side of the rotor disk 10, and that by mutually adjoining block the moving blade lead-in hole 12; and a tensioning key 13 that is inserted between the moving blades 20, in which the tensioning key 13 is provided with an insertion portion whose thickness dimension in the circumferential direction gradually
    Type: Application
    Filed: July 8, 2010
    Publication date: January 13, 2011
    Inventors: Yoichiro TSUMURA, Kyoichi Ikeno
  • Publication number: 20100034660
    Abstract: In a part for a rotary machine, a ceramic hard film is formed on a surface of a base material, the density of droplets which exist in a surface of the ceramic hard film is set to be within 1000 pieces/mm2, and the density of droplets whose mean particle diameter is 1 ?m or less is set to be within 550 pieces/mm2. A method for manufacturing the part of a rotary machine is a method for forming the ceramic hard film by at least an ion plating method or a sputtering method.
    Type: Application
    Filed: January 27, 2009
    Publication date: February 11, 2010
    Inventors: Masaki Kawano, Toyoaki Yasui, Yuya Konno, Kyoichi Ikeno
  • Publication number: 20090123737
    Abstract: A solid particle erosion resistant surface treated coat is provided by which a solid, particle erosion resistance is largely enhanced and a rotating member is given with an oxidation resistance without deteriorating a fatigue strength. Also, a rotating machine, such as a steam turbine, axial compressor or the like, applied with this coat is provided. The solid particle erosion resistant surface treated coat comprises a nitrided hard layer formed on a surface of base material and a PVD (physical vapor deposition) hard layer of at least one layer formed on the nitrided hard layer by a PVD method. The nitrided hard layer has a thickness of at least 30 ?m. The PVD hard layer has a total thickness of at least 10 ?m. Deformation of the base material by collisions by solid particles is prevented and crack of the coat comprising the nitrided hard layer formed on the base material and the PVD hard layer formed on the nitrided hard layer is prevented.
    Type: Application
    Filed: January 18, 2006
    Publication date: May 14, 2009
    Inventors: Toyoaki Yasui, Yoshikazu Yamada, Shugo Iwasaki, Katsuyasu Hananaka, Kyoichi Ikeno
  • Publication number: 20030012655
    Abstract: A turbine rotor blades assembly is provided which can be assembled easily and which can also maintain a securely fixed circumferential relationship between top portions of adjacent turbine rotor blades during operation. The present invention provides a turbine rotor blades assembly having a plurality of turbine rotor blades fixed to the outer circumference of a turbine rotor comprising: the turbine rotor blades fixedly inserted into the turbine rotor and each including a profile member extending radially outwardly from a central axis and a top plate formed integrally with the profile member at the outer end thereof, wherein said top plate provides an abutment interconnection relationship between adjacent turbine rotor blades, wherein said abutment engaging surfaces between adjacent turbine rotor blades are slantingly angled relative to a mean straight line extending from the center of the rotor to the center of the profile member.
    Type: Application
    Filed: August 29, 2002
    Publication date: January 16, 2003
    Inventors: Tomoyoshi Sasaki, Kyoichi Ikeno