Patents by Inventor Katsuya Yamashita

Katsuya Yamashita 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).

  • Patent number: 10520386
    Abstract: This vibration measurement device is configured to measure the balancing vibration of the cartridge, a kind of rotating machines, who has a rotor and a cartridge body to support the rotor rotatably for variable operating speed, and is provided with a rigidly fixed support structure, acceleration sensors which detect the vibration of the cartridge, and a flat spring which elastically supports the cartridge with respect to the support structure and has a variable spring constant of elastic support.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: December 31, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Tomoaki Inoue, Katsuya Yamashita, Rimpei Kawashita, Hiroshi Nakagawa, Nariaki Seike, Noriyuki Hayashi, Hideo Mori
  • Publication number: 20190301359
    Abstract: An unbalance detection device for detecting unbalance of a rotor of a turbo-cartridge which includes the rotor including a turbine wheel and a compressor wheel coupled via a rotational shaft and a bearing housing accommodating a bearing which supports the rotor rotatably, includes: a turbine-side housing member accommodating the turbine wheel; a compressor-side housing member accommodating the compressor wheel; a support mechanism configured to nip and support the turbo-cartridge from both sides by pressing at least one of the turbine-side housing member or the compressor-side housing member toward the turbo-cartridge; a vibration insulator interposed in each of a gap between the turbine-side housing member and the turbo-cartridge and a gap between the compressor-side housing member and the turbo-cartridge; and a vibration sensor installed so as to be contactable with the bearing housing, the vibration sensor being capable of detecting vibration upon rotation of the rotor.
    Type: Application
    Filed: May 26, 2016
    Publication date: October 3, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Katsuya YAMASHITA, Shuichi MIURA, Yosuke DAMMOTO, Takaya FUTAE, Shota YOSHIKAWA
  • Publication number: 20190162622
    Abstract: There is provided a vibration insulator mounted between a cartridge and a wheel-side housing, in which the cartridge includes a rotor having a wheel and a rotational shaft and a bearing housing accommodating a bearing rotatably supporting the rotor, and the wheel-side housing is to be pressed to the bearing housing in an axial direction. The vibration insulator includes an annular outer ring portion having a wheel-side contact surface configured to come into contact with the wheel-side housing, an annular inner ring portion disposed inside the outer ring portion with a clearance from the outer ring portion and having a bearing-side contact surface configured to come into contact with the bearing housing, and a flexible support portion interposed between the outer ring portion and the inner ring portion and connecting the outer ring portion and the inner ring portion, the flexible support portion being elastically deformable.
    Type: Application
    Filed: November 30, 2017
    Publication date: May 30, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Shuichi MIURA, Katsuya YAMASHITA, Naoyuki NAGAI, Yosuke DAMMOTO, Shota YOSHIKAWA
  • Patent number: 9664055
    Abstract: An impeller and a rotary machine include an inner diameter portion, a disk portion, a blade portion, and a cover portion. The disk portion includes a main body portion adjacent to the blade portion, and a fixing portion disposed at a radially inward side of the main body portion and fitted at a radially outward side of an outer peripheral surface of the inner diameter portion. The fixing portion is formed so as to protrude from the main body portion toward another side in an axial direction.
    Type: Grant
    Filed: December 25, 2012
    Date of Patent: May 30, 2017
    Assignees: MITSUBISHI INDUSTRIES, LTD., MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Nobuyori Yagi, Katsuya Yamashita, Akihiro Nakaniwa, Atsushi Higashio
  • Publication number: 20170138811
    Abstract: This vibration measurement device is configured to measure the balancing vibration of the cartridge, a kind of rotating machines, who has a rotor and a cartridge body to support the rotor rotatably for variable operating speed, and is provided with a rigidly fixed support structure, acceleration sensors which detect the vibration of the cartridge, and a flat spring which elastically supports the cartridge with respect to the support structure and has a variable spring constant of elastic support.
    Type: Application
    Filed: June 27, 2014
    Publication date: May 18, 2017
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Tomoaki INOUE, Katsuya YAMASHITA, Rimpei KAWASHITA, Hiroshi NAKAGAWA, Nariaki SEIKE, Noriyuki HAYASHI, Hideo MORI
  • Publication number: 20170122623
    Abstract: In one embodiment, a solar heat collecting system includes a heat collector configured to heat a heat medium by a sunray. The system further includes a heater configured to heat a heating target fluid by the heat medium. The system further includes a heat medium pipe configured to circulate the heat medium between the heat collector and the heater. The system further includes a temperature sensor configured to measure a temperature of the heat medium flowing from the heat collector toward the heater, at a position located upstream of an initial bent portion of the heat medium pipe in a region where the heat medium pipe extends from the heat collector toward the heater. The system further includes a controller configured to control heating of the heat medium in accordance with the temperature of the heat medium measured by the temperature sensor.
    Type: Application
    Filed: October 28, 2015
    Publication date: May 4, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Koichi GOTO, Masahiko TAKAHASHI, Katsuya YAMASHITA, Nobuo OKITA
  • Patent number: 9470212
    Abstract: A flasher separates a geothermal fluid into steam and hot water. A steam turbine is driven by being supplied with the separated steam as a working medium. An evaporator is supplied with the steam from the steam turbine as a first heating medium, which is thereafter supplied to a first preheater via the evaporator. A superheater is supplied with the hot water separated by the flasher as a second heating medium, which is thereafter supplied to a second preheater via the superheater. A medium turbine is driven by being supplied, as a working medium, with a low-boiling-point medium having been heat-exchanged sequentially in the first preheater, the second preheater, the evaporator, and the superheater. In the evaporator and the first preheater, the low-boiling-point medium and the first heating medium are heat-exchanged. In the superheater and the second preheater, the low-boiling-point medium and the second heating medium are heat-exchanged.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: October 18, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mohammad Ashari Hadianto, Akihiro Taniguchi, Mikhail Rodionov, Nobuo Okita, Shoko Ito, Katsuya Yamashita, Osamu Furuya, Mikio Takayanagi
  • Patent number: 9410535
    Abstract: A binary power generation system includes: a first pressure reducing steam-liquid separator which reduces the pressure of geothermal heat source water to separate the geothermal heat source water into water steam and hot liquid water; a steam turbine which is driven by geothermal water steam; a medium turbine which is driven by medium vapor obtained by evaporating a medium liquid with the geothermal heat source water as a heat source; a condenser/evaporator which is configured to transfer the heat of the water steam discharged from the steam turbine to the medium liquid so that the water steam is condensed and the medium liquid is evaporated; and a gas cooler which leads a working medium discharged from the medium turbine to thereby cool condensed water obtained by the condenser/evaporator and separate and discharge noncondensable gas contained in the condensed water.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: August 9, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuya Yamashita, Osamu Furuya, Mohammand Ashari Hadianto, Mikio Takayanagi
  • Patent number: 9382815
    Abstract: A power generating system includes a flow dividing structure, a first detector, a flow dividing adjusting valve, a heat accumulator, a heat exchanger and a turbine. The flow dividing structure divides a first heat medium into a first flow path and a second flow path. The first detector detects a flow rate of the first heat medium. The flow dividing adjusting valve opens the second flow path when the flow rate of the first heat medium exceeds a predetermined value. The heat accumulator accumulates the first heat medium via the second flow path and delivers the first heat medium at a temporally leveled flow rate. The heat exchanger transfers heat from the first heat medium to a second heat medium having a lower boiling point than the first heat medium. The turbine rotationally moves by the second heat medium with heat having been transferred by the heat exchanging unit.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: July 5, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mohammad Ashari Hadianto, Mikhail Rodionov, Nobuo Okita, Akihiro Taniguchi, Katsuya Yamashita, Osamu Furuya, Kazuo Takahata, Mikio Takayanagi
  • 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: 8985451
    Abstract: A communication apparatus performing communication in a noncontact manner is provided. The communication apparatus includes a transmission control unit configured to transmit a command; a timeout period checking unit configured to check whether a timeout period during which a response to the command is waited for has elapsed; a retransmission control unit configured to retransmit the command only after the timeout period has elapsed; an error checking unit configured to check whether data received within the timeout period has an error; and a processing unit configured to regard the data received within the timeout period as a correct response to the command if the data does not have an error and perform a process in accordance with the response. If the data received within the timeout period has an error, the retransmission control unit does not retransmit the command and the timeout period checking unit continues to check whether the timeout period has elapsed.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: March 24, 2015
    Assignee: Sony Corporation
    Inventors: Katsuya Yamashita, Kazuyuki Sakamoto
  • Patent number: 8985945
    Abstract: Provided is a uni-axial multi-stage radial gas expander which has a high degree of reliability and which can sufficiently cope with the conditions of a high pressure and a high pressure ratio. Two or more radial gas expander sections (11A, 11B) formed of two-or-more-stage impeller vanes (14a to 14h) arranged between bearings (21a, 21b) on a rotor shaft (13) consisting of a single shaft are housed in a signal casing (10).
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: March 24, 2015
    Assignee: Mitsubishi Heavy Industries Compressor Corporation
    Inventors: Hideki Nagao, Yasushi Mori, Masahiro Kobayashi, Katsuya Yamashita, Hirotaka Higashimori, Katsuki Yagi
  • 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
  • Patent number: 8858158
    Abstract: A steam turbine 10 is comprised of a double-structured casing configured of an outer casing 21 and an inner casing 20, a turbine rotor 23 disposed through the inner casing and having a plurality of stages of moving blades 22 implanted, and a plurality of stages of stationary blades 25 disposed alternately with the moving blades 22 in the axial direction of the turbine rotor 23 in the inner casing 20. The steam turbine 10 is further provided with a discharge passage 30 which externally guides steam, which has flown in the inner casing and passed the final stage moving blades while performing expansion work, directly from the inner casing interior.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: October 14, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazutaka Ikeda, Katsuya Yamashita, Takao Inukai, Kazuhiro Saito, Kouichi Kitaguchi, Shogo Iwai, Shigekazu Miyashita
  • Publication number: 20140290244
    Abstract: A binary power generation system includes: a first pressure reducing steam-liquid separator which reduces the pressure of geothermal heat source water to separate the geothermal heat source water into water steam and hot liquid water; a steam turbine which is driven by geothermal water steam; a medium turbine which is driven by medium vapor obtained by evaporating a medium liquid with the geothermal heat source water as a heat source; a condenser/evaporator which is configured to transfer the heat of the water steam discharged from the steam turbine to the medium liquid so that the water steam is condensed and the medium liquid is evaporated; and a gas cooler which leads a working medium discharged from the medium turbine to thereby cool condensed water obtained by the condenser/evaporator and separate and discharge noncondensable gas contained in the condensed water.
    Type: Application
    Filed: October 3, 2012
    Publication date: October 2, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Katsuya Yamashita, Osamu Furuya, Mohammand Ashari Hadianto, Mikio Takayanagi
  • Patent number: 8820076
    Abstract: According to one embodiment, a solar heat collecting apparatus comprises a first heat exchanging unit and a second heat exchanging unit. The first heat exchanging unit includes a first pipe through which a heat medium flows and a first heat receiving face which receives heat of sunlight reflected by a plurality of reflecting units. The first heat exchanging unit heats the heat medium flowing through the first pipe by using heat of the first heat receiving face. A second heat exchanging unit includes a second pipe through which the heat medium heated by the first heat exchanging unit flows, a second heat receiving face which receives heat of the sunlight reflected by a plurality of reflecting units, and a nozzle provided to the second pipe to discharge the heat medium flowing through the second pipe toward a back face of the second heat receiving face.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: September 2, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiro Taniyama, Katsuya Yamashita, Masahiko Takahashi, Tatsuro Uchida
  • 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
  • Publication number: 20140116046
    Abstract: A flasher separates a geothermal fluid into steam and hot water. A steam turbine is driven by being supplied with the separated steam as a working medium. An evaporator is supplied with the steam from the steam turbine as a first heating medium, which is thereafter supplied to a first preheater via the evaporator. A superheater is supplied with the hot water separated by the flasher as a second heating medium, which is thereafter supplied to a second preheater via the superheater. A medium turbine is driven by being supplied, as a working medium, with a low-boiling-point medium having been heat-exchanged sequentially in the first preheater, the second preheater, the evaporator, and the superheater. In the evaporator and the first preheater, the low-boiling-point medium and the first heating medium are heat-exchanged. In the superheater and the second preheater, the low-boiling-point medium and the second heating medium are heat-exchanged.
    Type: Application
    Filed: October 21, 2013
    Publication date: May 1, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Mohammad Asahri HADIANTO, Akihiro TANIGUCHI, Mikhail RODIONOV, Nobuo OKITA, Shoko ITO, Katsuya YAMASHITA, Osamu FURUYA, Mikio TAKAYANAGI
  • Publication number: 20140064975
    Abstract: The present invention is related to an impeller and a rotary machine including an inner diameter portion, a disk portion, a blade portion, and a cover portion. The disk portion includes a main body portion provided the blade portion, and a fixing portion disposed at an inner side in a radial direction of the rotor than the main body portion and fitted at the outside of an outer peripheral surface of the inner diameter portion. The fixing portion is formed so as to protrude toward the other side in the axial direction from the main body portion.
    Type: Application
    Filed: December 25, 2012
    Publication date: March 6, 2014
    Applicants: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION, MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Nobuyori Yagi, Katsuya Yamashita, Akihiro Nakaniwa, Atsushi Higashio
  • Publication number: 20140020387
    Abstract: In one embodiment, a power generating system includes; a flow dividing unit configured to divide a first heat medium supplied thereto to a first flow path and a second flow path; and a heat accumulating unit configured to accumulate the first heat medium sent thereto via the second flow path and deliver the first heat medium at a temporally leveled flow rate. The system further includes: a heat exchanging unit configured to transfer heat from the first heat medium sent thereto via the first flow path and the first heat medium delivered thereto from the heat accumulating unit, to a second heat medium that is lower in boiling point than the first heat medium; and a turbine configured to rotationally move with the second heat medium to which heat has been transferred by the heat exchanging unit.
    Type: Application
    Filed: July 17, 2013
    Publication date: January 23, 2014
    Inventors: Mohammad Ashari HADIANTO, Mikhail RODIONOV, Nobuo OKITA, Akihiro TANIGUCHI, Katsuya YAMASHITA, Osamu FURUYA, Kazuo TAKAHATA, Mikio TAKAYAMAGI