Patents Assigned to Mitsubishi Heavy Industries, Ltd.
  • Publication number: 20200217242
    Abstract: An object is to provide a supercharging system capable of actively and easily controlling a rotational speed of a turbine generator. A supercharging system includes a compressor driven by an electric motor to pump fluid to an engine, a turbine generator rotated by exhaust from the engine, and a drive device that drives the electric motor by electricity generated by the turbine generator, wherein the drive device includes a rectifying unit that rectifies the electricity generated by the turbine generator, a converter unit that steps up or down a voltage value of a DC voltage rectified by the rectifying unit and outputs the DC voltage, an inverter unit that drives the electric motor using the DC voltage output from the converter unit, and a control unit that controls a change amount of the DC voltage in the converter unit.
    Type: Application
    Filed: May 23, 2019
    Publication date: July 9, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yukio YAMASHITA, Takuya KOYANAGI, Vissuta JIWARIYAVEJ, Ayumi NAITO
  • Patent number: 10704559
    Abstract: A vertical pump includes: a rotary shaft; multi-stage impellers; a casing accommodating the multi-stage impellers; a mechanical seal provided in a penetration part of the casing for the rotary shaft; a balance sleeve, the balance sleeve being positioned between a final stage impeller of the multi-stage impellers and the mechanical seal in the penetration part for the rotary shaft; an intermediate chamber provided between the rotary shaft and the casing and provided on an opposite side of the multi-stage impellers across the balance sleeve in an axial direction of the rotary shaft, the intermediate chamber communicating with an intermediate stage impeller among the multi-stage impellers; a low pressure chamber provided between the rotary shaft and the casing, the low pressure chamber communicating with a low pressure side compared to the intermediate chamber; and a partition wall part dividing the intermediate chamber and the low pressure chamber.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: July 7, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiroshi Funakoshi, Yasushi Ueda, Akio Maeda, Yasuhiro Koyama, Hidetoshi Fukuta, Masahide Ikunami
  • Patent number: 10704835
    Abstract: A method of spray drying and washing using a spray drying apparatus, includes: spraying dehydrated filtrate from a spray nozzle hung down from a top side of the spray drying apparatus; introducing a part of flue gas into the spray drying apparatus to dry the dehydrated filtrate; wherein a compressed air is introduced into the spray nozzle to facilitate the spraying and into the wash nozzle to perform air purging during the spray drying, and jetting washing liquid from a wash nozzle provided on a side wall of the spray drying apparatus to wash the spray nozzle and an inside of the spray drying apparatus body, wherein the feeding of the dehydrated filtrate to the spray nozzle is stopped during the washing.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: July 7, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Toshihiro Fukuda, Seiji Kagawa, Jun Satou
  • Patent number: 10707790
    Abstract: The present electric power generation control device includes: an event detection unit which detects an event attributable to a deterioration in the balance between a torque input to a generator and an effective power output by the generator, the deterioration being caused by a reduction in a set value of the effective power received from the generator by an electric power converter when the electric power converter has detected a failure necessitating interruption of electric power transmission from the generator by a direct-current (DC) power transmission unit, the DC power transmission unit transmitting DC power, the electric power converter connecting a generator to the DC power transmission unit; and a torque command reduction unit which causes a reduction in a torque command to a motor when the event detection unit has detected the event attributable to the deterioration in the balance, the motor outputting the torque input to the generator.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: July 7, 2020
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masayuki Hashimoto, Tsuyoshi Wakasa, Yoshiyuki Kono, Shuhei Fujiwara
  • Patent number: 10704533
    Abstract: A method of operating a wind turbine power generating apparatus including a wind turbine rotor having a wind turbine blade includes: a step of obtaining a load applied to the wind turbine blade; and a step of selecting an operation mode of the wind turbine power generating apparatus on the basis of the load, from among a plurality of operation modes including a normal operation mode and at least one load-suppressing operation mode in which the load applied to the wind turbine blade is smaller than in the normal operation mode.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: July 7, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Mitsuya Baba, Yoshiyuki Hayashi, Wakako Ariki
  • Patent number: 10704556
    Abstract: An turbocharger with an electric motor (30) includes a housing (33), stator (32), and motor rotor. The housing (33) has first stator fixing section (131) and a second stator fixing section (132) formed in an inner peripheral surface of the housing (33) that fixes the stator (32) in the housing. The stator (32) has a first fixed section (121) formed in an outer peripheral surface of the stator (32) fitted to the first stator fixing section (131) and a second fixed section (122) that has a smaller outer diameter than the first fixed section (121) fitted to the second stator fixing section (132) in an outer peripheral surface of the stator (32). A large clearance section having a space is formed between the inner peripheral surface of the housing and the outer peripheral surface of the stator. The instant invention allows precise positioning of the stator and improved heat conduction.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: July 7, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hidetaka Nishimura, Takeshi Tsujii
  • Patent number: 10697897
    Abstract: An inspection system for inspecting a composite material member formed of a composite material has a main body part; an ultrasonic probe connected with the main body part and configured to contact the main surface; an optical sensor part connected to the main body part to be movable in a first direction; and a processor. The ultrasonic probe is configured to input ultrasonic wave to the main surface of the composite material member and to receive reflection wave generated from the ultrasonic wave reflected by the composite material member. The optical sensor part is configured to emit sensor light in a second direction orthogonal to the first direction, and to receive reflection light generated from the sensor light reflected on the intersection surface. The processor is configured to output a measurement result based on the reflection wave and the reflection light.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: June 30, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hirofumi Ienaga, Keisuke Maruko
  • Patent number: 10697429
    Abstract: A controller of a wind turbine for causing the wind turbine to perform rotor turning includes: an input part for receiving a target azimuth angle at which a rotor of the wind turbine is to be stopped; and a pitch control part configured to cause the wind turbine to perform a pitch control to stop the rotor at the target azimuth angle. The pitch control part is configured to: control a pitch angle of a wind turbine blade of the wind turbine so that the rotor rotates at a predetermined rotation speed which is constant, in a first period until the rotor reaches a control-switch azimuth angle immediately before the target azimuth angle; and control the pitch angle so that a rotation speed of the rotor decreases from the predetermined rotation speed in a second period after the rotor reaches the control-switch azimuth angle and before the rotor reaches the target azimuth angle.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: June 30, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Mitsuya Baba
  • Patent number: 10699815
    Abstract: A nozzle seal structure hermetically seals an instrumentation nozzle provided in a manner penetrating a reactor vessel from inside to outside and has a support post inserted therethrough. The instrumentation nozzle includes a flange portion projecting outward in a radial direction orthogonal to a nozzle axis direction at an end portion on an outer side of the reactor vessel.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: June 30, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Tadaaki Nishimura, Masaya Yamaguchi
  • Patent number: 10697440
    Abstract: A method of detecting a damage of a wind turbine blade of a wind turbine rotor includes: a light input step of inputting light into a fiber-optic sensor mounted to the wind turbine blade; a light detection step of detecting reflection light from the grating portion; an obtaining step of obtaining a wavelength fluctuation index representing a fluctuation amount of a wavelength of the reflection light detected in the light detection step; and a detection step. The detection step includes detecting the presence or the absence of the damage of the wind turbine blade based on the wavelength fluctuation index taking account of a correlation between the wavelength fluctuation index of the wind turbine blade and a load index related to a load applied to the wind turbine blade, or a correlation between the wavelength fluctuation index and a temperature index related to a temperature of the wind turbine blade.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: June 30, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshikatsu Ikawa, Katsuhiko Takita, Takao Kuroiwa, Mitsuya Baba, Kazunari Ide, Takuya Koyanagi
  • Patent number: 10697427
    Abstract: A vortex generator for a wind turbine blade includes at least one fin including a suction surface and a pressure surface. Each of the at least one fin is configured such that, in at least a part of a height range of the fin, a maximum camber ratio cmax/C being a ratio of a maximum camber cmax to a fin chord length C decreases with distance from a root of the fin toward a tip portion of the fin.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: June 30, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Motoshi Harada
  • Patent number: 10697311
    Abstract: A turbine rotor blade includes an airfoil portion having an airfoil defined by a pressure surface and a suction surface; and a squealer rib on a tip surface of the turbine rotor blade, the squealer rib extending from a leading-edge side (toward a trailing-edge side. The squealer rib has a ridge extending in an extending direction of the squealer rib. The turbine rotor blade is configured to provide a clearance between the tip surface of the turbine rotor blade and an inner wall surface of a casing of a turbine such that the inner wall surface of the casing of the turbine faces the tip surface of the turbine rotor blade and the clearance has a local minimum value on the ridge. The clearance is greater than the local minimum value at both sides of the ridge in a width direction of the squealer rib.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: June 30, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazuya Nishimura, Daigo Fujimura, Eisaku Ito, Koichi Ishizaka
  • Patent number: 10697481
    Abstract: A wind turbine includes a plurality of wind turbine blades; a plurality of hydraulic actuators for controlling respective pitch angles of the wind turbine blades; a first tank storing control oil for the hydraulic actuators; a first hydraulic pump disposed between the plurality of hydraulic actuators and the first tank, for pumping the control oil; a plurality of valves each of which is provided for corresponding one of the hydraulic actuators, for controlling a supply state of the control oil to the hydraulic actuator; and a control part for controlling each of the valves. The control part is configured to, in warm-up of a pitch hydraulic system of the plurality of wind turbine blades, perform an oil transfer operation of changing the pitch angle of the wind turbine blade from a feather side toward a fine side and then returning the pitch angle to the feather side.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: June 30, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Mitsuya Baba
  • Patent number: 10697397
    Abstract: A combustor of a jet engine includes a fuel injector, an igniter for igniting a gas mixture of air and fuel, and a flame holder. The igniter is disposed in the flame holder. After an activation of the igniter, the igniter disappears, and a space after the disappearance functions as a flame-holding space.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: June 30, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshihiko Ueno, Oto Yamamoto, Tasuku Suzuki, Shojiro Furuya
  • Publication number: 20200198131
    Abstract: A clamp installation apparatus includes a robot arm pedestal having a rotary table; a robot arm installed on the rotary table of the robot arm pedestal and having a plurality of arms and a plurality of joints; a robot hand installed to a forefront arm of the plurality of arms; and a control device. The robot hand includes: a clamp holding section configured to hold the clamp; a fastening section configured to fasten an engaging section of the clamp to give a clamp force to a work; and a measuring section configured to collect position data of a predetermined member of the clamp. The clamp can be automatically installed and removed. Also, the heat curing can be carried out in the condition to have installed the clamp.
    Type: Application
    Filed: November 2, 2017
    Publication date: June 25, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Motoo TACHI, Yukiharu YAMASAKI
  • Patent number: 10688736
    Abstract: A method of molding composite materials including shaping a laminate having fiber sheets laminated over one another, by bending the laminate in an X-direction and a Y-direction, in a three-dimensional orthogonal coordinate system. The method further includes mounting the laminate that has been shaped, onto a mold material deformed in a Z-direction, impregnating a resin material into the laminate while adjusting an amount of the resin material filled in, and molding the composite materials that have cured such that the composite materials are shaped to have a first inclined surface inclined at a first inclination angle with respect to a reference plane in the Z-direction. The mold material has a first inclination molding surface that molds the first inclined surface, and a second inclination molding surface that molds a surface of the composite materials into a second inclined surface having a second inclination angle smaller than the first inclination angle.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: June 23, 2020
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., TORAY INDUSTRIES, INC.
    Inventors: Kodai Shimono, Hiroshi Tokutomi, Kensuke Kokumai, Yusuke Yamagishi
  • Patent number: 10690044
    Abstract: A engine system is provided with: a plurality of cylinder groups which burn a gas mixture and discharge an exhaust gas; a plurality of high-pressure stage superchargers each having high-pressure stage turbines driven by the exhaust gas from the corresponding cylinder group and high-pressure stage compressors rotated by driving of the high-pressure stage turbines and configured to compress a gas supplied to the corresponding cylinder group; and a plurality of low-pressure stage superchargers having a low-pressure stage turbine driven by an exhaust gas discharged from the high-pressure stage turbine of the high-pressure supercharger which is any one of the plurality of high-pressure stage superchargers, and a low-pressure stage compressor rotated by driving of the low-pressure stage turbine and configured to compress a gas supplied to the high-pressure stage compressor of the high-pressure stage supercharger other than the one high-pressure stage supercharger.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: June 23, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazuro Hotta, Yuta Furukawa, Kazuo Ogura
  • Publication number: 20200189715
    Abstract: A fuel tank dam comprises a first section, a second section, a third section, and a flange section. The first section can be fixed to a first structural component, and the second section can be fixed to a second structural component. The third section has a bellows comprising a plurality of folded sections and is disposed between the first section and the second section. The flange section extends along an outer plate at least from an edge section of the third section and can be fixed to the outer plate.
    Type: Application
    Filed: June 28, 2018
    Publication date: June 18, 2020
    Applicant: Mitsubishi Heavy Industries, Ltd.
    Inventors: Eizaburo YAMAGUCHI, Tadasuke KURITA, Hajime TADA, Yoko TAGUCHI, Kana SAKON, Akihisa OKUDA, Ryoji OKABE
  • Patent number: 10683824
    Abstract: Each of a plurality of control devices (10, 11, 12) of an engine control system (1) is provided with a drive control unit (100, 110, 120) which controls the drive of an engine unit to be controlled according to memory information stored in a memory of the control device, a memory information output unit which outputs the memory information stored in the memory of the control device to other control devices, and a memory information update unit which writes memory information received from the memory information output units of other control devices into the memory of the control device.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: June 16, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kanta Inoue, Yukio Yamashita, Mitsufumi Goto, Musashi Sakamoto
  • Patent number: 10683822
    Abstract: In certain embodiments, a method and an apparatus which can be implemented with a simplified and inexpensive configuration without causing a misfire in a combustion state. In a fuel-Cetane-number estimation method according to embodiments, a map which specifies a relationship between the Cetane number and a control parameter at which NOx concentration of exhaust gas reaches a predetermined value is prepared in advance. Then, the control parameter is controlled variably to detect transition of the NOx concentration of the exhaust gas of the internal combustion engine, and thereby the control parameter of the internal combustion engine at which the NOx concentration has reached the predetermined value is obtained, and the Cetane number which corresponds to the obtained control parameter is estimated on the basis of the map.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: June 16, 2020
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Takayuki Yamamoto