Patents by Inventor Asako Inomata

Asako Inomata 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: 20200131923
    Abstract: A stator blade of an embodiment includes: a blade effective part having hollow portions; an outer shroud having an outer plate flange portion provided on a radial-direction outer side of the blade effective part, and a pair of outer mounting portions provided in a circumferential direction on a front edge side and a rear edge side; an inner shroud having an inner plate flange portion provided on a radial-direction inner side of the blade effective part; cooling medium introduction passages which introduce a cooling medium via opening portions formed in the outer plate flange portion and passing through the outer plate flange portion in a radial direction, to the hollow portions; and a cooling medium introduction passage formed in a direction along a surface of the outer plate flange portion in a wall thickness of the outer plate flange portion, which introduces a cooling medium to the hollow portion.
    Type: Application
    Filed: October 24, 2019
    Publication date: April 30, 2020
    Applicant: Toshiba Energy Systems & Solutions Corporation
    Inventors: Asako INOMATA, Shinji TANIGAWA, Iwataro SATO, Hideyuki MAEDA, Satoru SEKINE, Kazutaka TSURUTA
  • Patent number: 10550698
    Abstract: A turbine 10 includes: a turbine rotor having a rotor main body including a hollow part into which a cooling fluid flows, and a plurality of rotor wheels arranged in an axial direction of the rotor main body and protruding from the rotor main body. A cooling-fluid introducing passage extending from the hollow part in a direction intersecting with the axial direction of the rotor main body is formed in the rotor main body so as to allow the cooling fluid in the hollow part to flow through the cooling-fluid introducing passage and then to flow around the rotor wheel to be conducted to the working-fluid flow passage. A flow-rate control plug regulating a flow rate of the cooling fluid flowing through the cooling-fluid introducing passage is disposed in the cooling-fluid introducing passage.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: February 4, 2020
    Assignee: Toshiba Energy Systems & Solutions Corporation
    Inventors: Asako Inomata, Iwataro Sato, Hideyuki Maeda, Satoru Sekine, Kazutaka Tsuruta, Takeo Suga
  • Publication number: 20160376890
    Abstract: A turbine 10 includes: a turbine rotor having a rotor main body including a hollow part into which a cooling fluid flows, and a plurality of rotor wheels arranged in an axial direction of the rotor main body and protruding from the rotor main body. A cooling-fluid introducing passage extending from the hollow part in a direction intersecting with the axial direction of the rotor main body is formed in the rotor main body so as to allow the cooling fluid in the hollow part to flow through the cooling-fluid introducing passage and then to flow around the rotor wheel to be conducted to the working-fluid flow passage. A flow-rate control plug regulating a flow rate of the cooling fluid flowing through the cooling-fluid introducing passage is disposed in the cooling-fluid introducing passage.
    Type: Application
    Filed: September 8, 2016
    Publication date: December 29, 2016
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Asako INOMATA, Iwataro SATO, Hideyuki MAEDA, Satoru SEKINE, Kazutaka TSURUTA, Takeo SUGA
  • Publication number: 20160146188
    Abstract: A wind farm of an embodiment includes a wind turbine and an airflow generation device, the wind turbine being installed in plurality in a predetermined installation region. The wind turbines each have a blade attached to a rotor. The airflow generation device includes a first electrode and a second electrode which are provided on a substrate formed of an insulating material. Here, the plural wind turbines include: a first wind turbine located on an upstream side and a second wind turbine located on a more downstream side than the first wind turbine, in a wind direction with a higher yearly frequency than a predetermined value, out of wind directions of wind blowing in the installation region. The airflow generation device is installed on the blade provided in the first wind turbine out of the plural wind turbines.
    Type: Application
    Filed: November 17, 2015
    Publication date: May 26, 2016
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hisashi MATSUDA, Motofumi Tanaka, Toshiki Osako, Kenichi Yamazaki, Masahiro Asayama, Naohiko Shimura, Asako Inomata
  • Patent number: 9045993
    Abstract: A steam turbine 10 of an embodiment has seal rings 60 between an inlet sleeve 40 for introducing steam and an inner casing 20 and an outer casing 21 into which the inlet sleeve 40 is inserted. The seal rings 60 have high-temperature side seal rings 70 which are disposed their inner circumferences contacted to the outer circumference of the inlet sleeve 40, and low-temperature side seal rings 80 which are formed to have inner and outer diameters larger than those of the high-temperature side seal rings 70 and disposed with their outer circumferences contacted to the inner casing 20 or the outer casing 21. A thermal barrier layer 90 is disposed between the inner circumferences of the high-temperature side seal rings 70 and the outer circumference of the inlet sleeve 40 and between the high-temperature side seal rings 70 and the low-temperature side seal rings 80.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: June 2, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Asako Inomata, Katsuya Yamashita, Kunihiko Wada, Kazuhiro Saito, Yusuke Suzuki, Takao Inukai, Shogo Iwai, Takeo Suga
  • Patent number: 8979480
    Abstract: A plurality of blades are studded in a rotor disc integrated with the rotor along the circumferential direction of the rotor, a plurality of vanes are attached to a casing covering the rotor along the circumferential direction of the rotor, and an internal diaphragm disposed on rotor-side surfaces of the vanes in such a way that the internal diaphragm faces the rotor disc. The vanes and the blades adjacent to each other in the axial direction of the rotor form a turbine stage. A rotor-side cooling path is formed through the rotor disc in the axial direction of the rotor, and a diaphragm-side cooling path is formed through the internal diaphragm in the axial direction of the rotor, and a cooling medium flowing through the rotor-side cooling path diverts into the diaphragm-side cooling path and a labyrinth flow path provided between the internal diaphragm and the rotor.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: March 17, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Asako Inomata, Katsuya Yamashita, Kazuhiro Saito, Takao Inukai, Kazutaka Ikeda
  • Publication number: 20150061428
    Abstract: An axial gap-type power generator in an embodiment includes a rotor provided with a magnet and a stator provided with a coil, the rotor and the stator being arranged via a gap in an axial direction of a rotation shaft. Further, a blade is installed at the rotor and the blade generates a cooling wind by rotation of the rotor. Here, the blade is installed at the rotor so that the cooling wind flows through the gap between the rotor and the stator from an inside to an outside in a radial direction of the rotation shaft.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomohiko JIMBO, Kei Matsuoka, Yasuo Kabata, Asako Inomata, Yoshihiro Taniyama
  • Patent number: 8840362
    Abstract: According to an embodiment, at least one first outer ring has an annular outer ring cavity to which external cooling steam is supplied. A radial direction cooling hole connecting with the outer ring cavity is formed in the stator blades connected to the first outer ring. An annular inner ring cavity connecting with the radial direction cooling hole is formed in a first inner ring constituting one diaphragm together with the first outer ring. Cooling steam blowing holes connecting an annular wheel space and the inner ring cavity are formed. The annular wheel space is formed between the first inner ring and a rotor wheel adjacent to the first inner ring.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: September 23, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shoko Ito, Iwataro Sato, Kazutaka Ikeda, Asako Inomata
  • Patent number: 8727705
    Abstract: A steam turbine 10 is provided with a double-structure comprising an inner casing 20 and an outer casing 21. A turbine rotor 22, in which plural stages of moving blades 24 are circumferentially implanted, is operatively disposed in inner casing 20. A diaphragm outer ring 25 and a diaphragm inner ring are disposed along the circumferential direction in inner casing 20. Stationary blades 27 are circumferentially provided between diaphragm outer ring 25 and the diaphragm inner ring, so that diaphragm outer ring 25, the diaphragm inner ring and stationary blades 27 form a stage of stationary blades. The stages of the stationary blades are arranged alternately with the stages of moving blades 24 in the axial direction of turbine rotor 22. A cooling medium passage 40 for passing a cooling medium CM which is supplied through a supply pipe 45 is formed between inner casing 20 and diaphragm outer ring 25.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: May 20, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Asako Inomata, Katsuya Yamashita, Kazuhiro Saito, Takao Inukai, Kunihiko Wada, Kazutaka Ikeda, Takeo Suga
  • Patent number: 8695345
    Abstract: In one embodiment, a calculation method of moisture loss in a steam turbine calculates first a wetness fraction at the inlet and outlet of each of stationary blade cascades and rotor blade cascades. Subsequently, the moisture loss is classified into (1) supersaturation loss, (2) condensation loss, (3) acceleration loss, (4) braking loss, (5) capture loss and (6) pumping loss, and a loss for calculation of the moisture loss is selected from the above losses (1) to (6) according to the wetness fraction of steam at the inlet and outlet of each blade cascade. An amount of each selected loss is calculated, and an amount of moisture loss at each blade cascade is calculated.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: April 15, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroyuki Kawagishi, Akihiro Onoda, Tomohiro Tejima, Tomohiko Tsukuda, Asako Inomata, Naoki Shibukawa
  • Patent number: 8439627
    Abstract: A steam turbine includes a casing, a rotor arranged inside the casing so as to extend in an axial direction of the casing, a rotor disk integrally formed with the rotor, a rotor-side implanting portion formed in the rotor disk, a plurality of moving blades arranged on the rotor disk in a circumferential direction of the rotor, and a moving blade-side implanting portion formed in the moving blade, in which the moving blade-side implanting portions of the moving blades are engaged with the rotor-side implanting portions, respectively. A cooling medium flows through a gap formed at least on a blade portion side of the moving blade among gaps formed between the moving blade-side implanting portions and the rotor-side implanting portions.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: May 14, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Asako Inomata, Katsuya Yamashita, Kazuhiro Saito, Takao Inukai, Kazutaka Ikeda
  • Patent number: 8393861
    Abstract: In one embodiment, a steam device includes a high-temperature member and a low-temperature member. One surface of the high-temperature member is exposed to high-temperature steam, and the other surface is cooled by cooling steam having a temperature lower than the high-temperature steam. The low-temperature member is disposed to face the high-temperature member with a passage for the cooling steam therebetween and is formed of a material having a heat resistance lower than that of the high-temperature member.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: March 12, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kunihiko Wada, Katsuya Yamashita, Yutaka Ishiwata, Yuujiro Nakatani, Takeo Suga, Asako Inomata, Kazuhiro Saito, Takao Inukai, Yusuke Suzuki, Shogo Iwai
  • Patent number: 8356974
    Abstract: A steam turbine 20 is provided with a casing 109, a turbine rotor 25 disposed through the casing 109, and labyrinth portions 50, 55 which are disposed at the boundary between the casing 109 and the turbine rotor 25. The steam turbine 20 is further provided with a sealing steam pipe 65 for supplying sealing steam to the labyrinth portions 50, 55 and a gas supply pipe 60 for supplying the labyrinth portions 50, 55 with a cooling gas for cooling the turbine rotor 25 or a heating gas for heating the turbine rotor 25.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: January 22, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Asako Inomata, Katsuya Yamashita, Koji Yamaguchi
  • Patent number: 8347627
    Abstract: A carbon-dioxide-capture-type steam power generation system 1 according to the present invention comprises a boiler 6 producing an exhaust gas 5 by combusting a fuel 2 and having a flue 8; an absorbing unit 40 being configured to absorb the carbon-dioxide contained in the exhaust gas 5 into an absorbing solution; and a regenerating unit 44 being configured to release the carbon dioxide gas from the absorbing solution absorbing the carbon dioxide and discharge the released carbon dioxide gas. Further, in this system, a reboiler 49 is provided for receiving a heating-medium as heat source, producing a steam 43 and supplying the produced steam 43 to the regenerating unit 44. Additionally, in the flue 8 of the boiler 6, a boiler-side heat exchanger 61 is provided for heating the heating-medium by the exhaust gas 5 passing therethrough.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: January 8, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuya Yamashita, Asako Inomata, Yukio Oohashi, Takashi Ogawa, Kazutaka Ikeda, Takeo Suga
  • Publication number: 20120243978
    Abstract: A steam turbine 10 of an embodiment has seal rings 60 between an inlet sleeve 40 for introducing steam and an inner casing 20 and an outer casing 21 into which the inlet sleeve 40 is inserted. The seal rings 60 have high-temperature side seal rings 70 which are disposed their inner circumferences contacted to the outer circumference of the inlet sleeve 40, and low-temperature side seal rings 80 which are formed to have inner and outer diameters larger than those of the high-temperature side seal rings 70 and disposed with their outer circumferences contacted to the inner casing 20 or the outer casing 21. A thermal barrier layer 90 is disposed between the inner circumferences of the high-temperature side seal rings 70 and the outer circumference of the inlet sleeve 40 and between the high-temperature side seal rings 70 and the low-temperature side seal rings 80.
    Type: Application
    Filed: March 15, 2012
    Publication date: September 27, 2012
    Inventors: Asako INOMATA, Katsuya YAMASHITA, Kunihiko WADA, Kazuhiro SAITO, Yusuke SUZUKI, Takao INUKAI, Shogo IWAI, Takeo SUGA
  • Patent number: 8240148
    Abstract: The present invention provides a turbine system which can start a turbine, while controlling thermal stress generated in a turbine rotor and an expansion difference, due to thermal expansion, between a casing and the turbine rotor, to be lower than defined values, respectively. The turbine system (1) according to the present invention includes the turbine (4) having a casing (2) and the turbine rotor (3) rotatably attached to the casing (2), and a main steam pipe (5) connected to an upstream portion of the casing (2). A control valve (6) adapted for controlling a flow rate of steam discharging into the casing (2) is provided with the main steam pipe (5), and a power generator (7) is coupled with the turbine rotor (3). Additionally, a starting control system (10) is adapted for controlling the control valve (6), while obtaining an operational amount of the control valve (6).
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: August 14, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shigeru Matsumoto, Koji Yakushi, Asako Inomata, Eiji Nakagawa
  • Patent number: 8195433
    Abstract: This invention provides an optimum value search apparatus, method, recording medium, and computer program product used in designing, analyzing, or testing a device having a plurality of factors that have effects on a characteristic. In this method, an orthogonal array is generated by setting level values obtained from the initial values of the factors to the coordinates of a two-dimensional table including a matrix of the characteristics and the factors. From the characteristics on the orthogonal array, characteristic values obtained on the basis of combinations of the level values of the factors of a single characteristic are grasped. A combination having a most excellent characteristic value is selected. The level values of the factors in the characteristic corresponding to the selected combination are reset in the orthogonal array. After resetting, processes are repeatedly executed to search for an optimum value as a most excellent one of the characteristic values.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: June 5, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroyuki Kawagishi, Hisashi Matsuda, Fumio Ootomo, Asako Inomata
  • Publication number: 20120067045
    Abstract: In one embodiment, a calculation method of moisture loss in a steam turbine calculates first a wetness fraction at the inlet and outlet of each of stationary blade cascades and rotor blade cascades. Subsequently, the moisture loss is classified into (1) supersaturation loss, (2) condensation loss, (3) acceleration loss, (4) braking loss, (5) capture loss and (6) pumping loss, and a loss for calculation of the moisture loss is selected from the above losses (1) to (6) according to the wetness fraction of steam at the inlet and outlet of each blade cascade. An amount of each selected loss is calculated, and an amount of moisture loss at each blade cascade is calculated.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 22, 2012
    Inventors: Hiroyuki KAWAGISHI, Akihiro Onoda, Tomohiro Tejima, Tomohiko Tsukuda, Asako Inomata, Naoki Shibukawa
  • Patent number: 8105038
    Abstract: A row of moving blades for a steam turbine has moving blades elongated radially which are arranged peripherally around and secured to a turbine rotor. The row also has an intermediate support structure for holding the blades to each other at a radially intermediate position. The support structure has a shape of a streamline cross section. The support structure may include a tie wire secured to the blades, or lugs protruding from the blades and combined to each other. The support structure may include lugs protruding from the blades to each other, and a sleeve combining the lugs. The shape of a streamline cross section may have an obtuse-angle or acute-angle upstream part.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: January 31, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Fumio Ootomo, Hisashi Matsuda, Asako Inomata, Hiroyuki Kawagishi, Yoshiki Niizeki, Naoki Shibukawa, Hiroshi Kawakami
  • Publication number: 20110280717
    Abstract: In one embodiment, a steam device includes a high-temperature member and a low-temperature member. One surface of the high-temperature member is exposed to high-temperature steam, and the other surface is cooled by cooling steam having a temperature lower than the high-temperature steam. The low-temperature member is disposed to face the high-temperature member with a passage for the cooling steam therebetween and is formed of a material having a heat resistance lower than that of the high-temperature member.
    Type: Application
    Filed: May 26, 2011
    Publication date: November 17, 2011
    Inventors: Kunihiko WADA, Katsuya Yamashita, Yutaka Ishiwata, Yuujiro Nakatani, Takeo Suga, Asako Inomata, Kazuhiro Saito, Takao Inukai, Yusuke Suzuki, Shogo Iwai