Patents Assigned to MITSUBISHI HITACHI POWER SYSTEMS, LTD.
  • Patent number: 10808191
    Abstract: A gasification apparatus for gasifying a carbonaceous feedstock to produce raw syngas includes a gasifier in which the raw syngas flows, a heat exchanger provided inside the gasifier downstream to exchange heat with the raw syngas, a hanger pipe through which a part of water supplied from a water supply passage flows to support a load of the heat exchanger, a heat exchanger inflow passage configured to cause the water flowing out from the hanger pipe to flow to an inflow side of the heat exchanger, a bypass passage branching from the water supply passage to cause a remaining of the water supplied to the hanger pipe, a bypass valve provided in the bypass passage, and a control device configured to control, depending on a gasifier load, an opening degree of the bypass valve to adjust the water supplied to the hanger pipe and the bypass passage.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: October 20, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Kenta Haari, Yasunari Shibata, Yasuhiro Takei, Masashi Kitada, Fumihiro Chuman, Shigetaka Takeda
  • Patent number: 10804549
    Abstract: Provided are: a power generation system that can generate electric power efficiently with a fuel cell; and a method for operating said power generation system. This power generation system comprises: a fuel cell including a plurality of unit fuel cell modules; a gas turbine; various lines for circulating fuel gas, air, discharged fuel gas, and discharged air between the fuel cell and the gas turbine; and a control device. The control device determines the number of said unit fuel cell modules to be operated on the basis of the required power generation amount, and operates the determined number of said unit fuel cell modules.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: October 13, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yukimasa Nakamoto, Kazunori Fujita
  • Patent number: 10794296
    Abstract: The gas turbine combustor and the operation method thereof are designed to minimize visualization of exhaust gas from the gas turbine upon switching of the gas turbine fuel from the oil fuel to the gas fuel. Upon switching of the combustion by the pilot burner from the oil burning to the gas burning, the gas fuel is supplied to the main burners so as to start the gas burning. Then the gas fuel is supplied to the pilot burner to start the gas burning.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: October 6, 2020
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Yasuhiro Akiyama, Mitsuhiro Karishuku, Keita Naito, Kanetsugu Nakamura, Satoshi Dodo, Tomohiro Asai, Yoshitaka Hirata, Akinori Hayashi
  • Patent number: 10794196
    Abstract: A stationary blade includes a main unit having a hollow blade structure formed from a metal plate by plastic forming. The stationary blade includes a blade tail section. In a blade tail upper portion, the metal plate has a concave-shaped recess and a rib formed on an inner surface side thereof and the metal plate further has slits formed by slitting on a blade pressure side thereof, so that droplets affixed on a blade surface can be guided into an inside of the hollow blade when the blade tail section is joined to the hollow blade main unit. The recess in the metal plate is covered so as to be lidded by a suction-side protrusion of a suction-side metal plate from a blade suction side to thereby form a hollow blade tail section. The metal plates are welded together to the main unit.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: October 6, 2020
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Susumu Nakano, Koji Ishibashi, Shunsuke Mizumi, Masaki Matsuda, Takeshi Kudo
  • Publication number: 20200306674
    Abstract: To provide a metal filter having a small number of production steps and having high filtration performance, and a production method therefor. A mesh filter portion having a filtration function and a support portion that includes plural beam members supporting the mesh filter portion are seamlessly continuous to each other.
    Type: Application
    Filed: December 18, 2019
    Publication date: October 1, 2020
    Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Atsuo OTA, Shinya IMANO
  • Patent number: 10787934
    Abstract: A steam turbine plant includes a high-medium pressure turbine having a high-pressure turbine section provided at one end portion in an axial direction and a medium-pressure turbine section provided at the other end portion; a low-pressure turbine disposed coaxially with the high-medium pressure turbine; a condenser configured to cool steam used in the low-pressure turbine to condense the steam into condensate; and a feed-water heater configured to heat the condensate with steam discharged from the high-pressure turbine section. The plant also includes a low-pressure moisture separating and heating device configured to remove moisture of steam discharged from the medium-pressure turbine section, and to heat the steam with a part of steam to be sent to an inlet portion of the high-pressure turbine section and a part of steam to be sent to an inlet portion of the medium-pressure turbine section from an outlet portion of the high-pressure turbine section.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: September 29, 2020
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Ryota Takahashi, Issaku Fujita, Kentaro Tanaka
  • Patent number: 10780473
    Abstract: A cement solidification device for waste includes a slurrying vessel 14 that dissolves and slurries waste 11 containing harmful substances and deliquescent compounds in solvent water 12 to obtain slurried material 13; an iron-based additive supply unit 16 that adds an iron-based additive 15 to the slurrying vessel 14; a cement kneading vessel 20 that adds a cement solidifying agent 17 from a cement-solidifying agent supply unit 18 to the slurried material 13 in which the iron-based additive 15 is mixed to obtain a cement kneaded product 19; and a cement solidification unit 22 that cures the cement kneaded product 19 to form a cement solidified product 21.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: September 22, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Naoyuki Kamiyama, Seiji Kagawa, Tetsu Ushiku, Satoru Sugita, Toshihiro Fukuda
  • Patent number: 10782025
    Abstract: A combustor pipe is linked to a vane shroud in which a vane is provided, and includes an inlet, an outlet, an inner pipe of which an inner space is a flow path for passing a combustion gas, a first cooling flow path through which a cooling medium passes being formed inside a wall that forms the flow path; and an outer pipe on an outer circumference of the inner pipe and secured to the inner pipe. A second cooling flow path through which a cooling medium passes and which is connected to the first cooling flow path near the outlet of the combustor pipe is formed between an outer circumferential surface of the inner pipe and an inner circumferential surface of the outer pipe, and a cooling promoting structure is formed on the outer pipe, inside the second cooling flow path near the first cooling flow path.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: September 22, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Shin Kato, Taiki Kinoshita, Shingo Sato
  • Patent number: 10775779
    Abstract: An operation information analyzer includes: an information collection unit 11 configured to collect event information on events that have occurred during operation of an apparatus 20 including a plurality of devices 21; an information analysis unit 12 configured to organize the collected event information to generate and store index values used to evaluate operation conditions of the apparatus 20; and an information presentation unit 13 configured to present the index values stored in the information analysis unit 12 to a user. The information analysis unit 12 generates the index values for each period sectioned based on a change in an operation state of the apparatus.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: September 15, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Hiromi Aota, Junya Iwasaki, Pradeepa Wevita, Takashi Sonoda
  • Patent number: 10775042
    Abstract: A combustion burner includes a fuel nozzle configured to blow in fuel gas of solid fuel and air, a combustion air nozzle configured to blow in air from the outside of the fuel nozzle, and at least one flame stabilizer arranged on the axial center side at a distal end of the fuel nozzle. The flame stabilizer is arranged at the distal end, and has a flame stabilizing member whose width increases in a direction toward the distal end, and a straightening vane having a plate shape and being arranged on an extension of the flame stabilizing member on the upstream side in a flow direction of the fuel gas. An abrasion-resistant member is arranged on a wide width surface of the flame stabilizer, and an abrasion-resistant member is arranged on at least a part of the straightening vane.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: September 15, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Ryuhei Takashima, Akimasa Takayama, Keigo Matsumoto, Noboru Kawamoto, Ryuichiro Tanaka
  • Patent number: 10775079
    Abstract: The time for steam generated in a low temperature heating device to reach a saturated steam temperature is reduced a low temperature heating device configured to heat supplied water by using heat of sunlight to generate steam; a steam separation device configured to separate two-phase water-steam fluid generated in the low temperature heating device into water and steam; and a high temperature heating device configured to heat the steam separated in the steam separation device by using heat of sunlight reflected by a plurality of heliostats to generate superheated steam.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: September 15, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Kohei Shinozaki, Takahiro Marumoto, Kazuhito Koyama
  • Publication number: 20200277985
    Abstract: A tilting pad bearing including pads disposed around a rotating shaft so as to face an outer peripheral surface of the rotating shaft, liners each supporting an outside of the pad in a radial direction with an axis of the rotating shaft as a center, and pivots each supporting an outside of the liner in the radial direction with the axis as a center at a central position of the liner in an axial direction of the rotating shaft so as to allow the pad to be swingable, wherein a recessed portion recessed in a direction away from the pad is formed on a surface of the liner facing the pad or a surface of the pad facing the liner at least at the central position thereof in the axial direction of the rotating shaft.
    Type: Application
    Filed: October 24, 2018
    Publication date: September 3, 2020
    Applicant: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Chihiro Yoshimine, Tanehiro Shinohara, Takuzo Shigihara, Shuichi Isayama, Yuichiro Waki
  • Patent number: 10760449
    Abstract: A fixing device fixes a relative position in a rotational direction of an outer member and an inner member of a stationary body of the rotary machine, and includes: a radial pin that is inserted into a through hole passing through the outer member in a radial direction of a rotary machine and having a stepped portion formed therein to have a larger diameter at a portion on an outer side in the radial direction of the rotary machine than at a portion on an inner side in the radial direction, that has a part on the inner side in the radial direction of the rotary machine to be inserted into a concave portion of the inner member, and that has a flange portion on the outer side in the radial direction of the rotary machine.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: September 1, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Akihiko Shirota, Takeki Nakayama, Mitsuhiro Adachi, Hiroshi Inagaki
  • Patent number: 10758917
    Abstract: A control device for the coal pulverizing apparatus includes a first command value generation part for generating a command value of a first parameter including at least one of rotational speed of the table, pressing force of the roller to the table, or air supply amount in the air supply part, and a second command value generation part for generating a command value of a second parameter including a rotational speed of the rotary classifier. The first command value generation part is configured to determine the command value of the first parameter, based on a first preceding signal determined in accordance with at least load information of a combustion device which burns the pulverized coal from the coal pulverizing apparatus. The second command value generation part determines the command value of the second parameter, based on a second preceding signal determined in accordance with at least the load information.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: September 1, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventor: Rikio Inoue
  • Patent number: 10760452
    Abstract: A condenser includes heat transfer pipe groups, a main body and an intermediate body. The intermediate body has an inlet that opens in a horizontal direction, and an outlet that opens downward. The main body has an inlet that opens upward and is connected to the intermediate body outlet. The heat transfer pipe groups are arranged in the horizontal direction and disposed in the main body. A near-side outlet edge is an edge of the intermediate body outlet on a side near the intermediate body inlet in the horizontal direction and a far-side outlet edge is an edge of the intermediate body outlet on a side far from the intermediate body inlet. At least one part of the main body is located below an imaginary line that connects the near-side and far-side outlet edges and at least one part of the main body is located above the imaginary line.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: September 1, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Katsuhiro Hotta, Taichi Nakamura
  • Publication number: 20200269176
    Abstract: A filter backwashing unit is disposed in a path in which process gas flows to remove at least a part of trapped dust included in a process gas by backwashing an element of a filter device that traps the dust when a process gas passes. The filter backwashing unit includes a gas injection device disposed downstream of the element in a flow direction of a process gas to inject backwashing gas toward the element from downstream; a parameter detection device configured to detect a parameter used for determination of a state of dust adhering to the element; and a control device configured to estimate a thickness of dust deposited on a surface of the element upstream of a process gas based on a result of the detection, and determine an interval at which the element is backwashed based on the estimated thickness of the dust.
    Type: Application
    Filed: December 12, 2016
    Publication date: August 27, 2020
    Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Haruto Shinoda, Yoshinori Koyama
  • Publication number: 20200270536
    Abstract: A gasification unit includes a gasifier configured to gasify a carbon-containing solid fuel; a pressure vessel housing the gasification furnace; a pressure holding section that is to be filled with a pressurizing gas and is provided between the gasifier and the pressure vessel; a pressurizing gas supply device configured to supply a pressurizing gas to the pressure holding section; pressure equalizing pipes by which the inside of the gasifier is communicated with the pressure holding section; a pressure difference detection and estimation device configured to detect or estimate a pressure difference between a first pressure on the gasifier side and a second pressure on the pressure holding section side; and a control device configured to control the pressurizing gas supply device such that the second pressure is higher than the first pressure based on a detection or estimation result of the pressure difference detection and estimation device.
    Type: Application
    Filed: October 12, 2016
    Publication date: August 27, 2020
    Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Kengo Shibata, Yasunari Shibata, Yoshinori Koyama
  • Publication number: 20200263101
    Abstract: A char discharge unit is for discharging char discharged from a filtration unit into a char storage unit in which a pressure is at least temporarily higher pressure than that in the filtration unit. The char discharge unit includes a char discharge line connected to a lower side of the filtration unit in a vertical direction and connected to the char storage unit; a lock hopper installed at an intermediary point of the char discharge line to temporarily store the char; an admission valve installed in the char discharge line between the lock hopper and the filtration unit; a control valve installed in the char discharge line between the lock hopper and the char storage unit; and a control device configured to close the control valve when the admission valve is open, and to close the admission valve when the control valve is open.
    Type: Application
    Filed: December 12, 2016
    Publication date: August 20, 2020
    Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Haruto Shinoda, Koji Nishimura, Naoto Nakayama, Yasunari Shibata
  • Patent number: 10745632
    Abstract: This slag discharge system (1) includes: a slag hopper (5) of a coal gasifier (2); a slag discharge line (7) that discharges a mixture of slag and slag water (W); a slag separation device (10) that separates the slag from the mixture of slag and slag water (W); a circulation pump (24) that forms a water flow from the slag hopper (5) to the slag separation device (10) in the slag discharge line (7); a lock hopper (14) that stores slag which has been separated at the slag separation device (10) and discharges the same out of the coal gasifier (2) system; a slag discharge valve (15) that is provided on a lower outlet of the lock hopper (14); and a slag water return flow line (20) for returning the slag water (W) which has been separated at the slag separation device (10) to the slag hopper.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: August 18, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yoshinori Koyama, Masato Murayama
  • Patent number: 10746105
    Abstract: A control device for a power generation system whereby power is generated by a first power source that operates by burning a fuel. The control device identifies, on the basis of a pressure difference in a prior-stage mechanism that supplies the fuel to the first power source, a fuel capacity that compensates for the pressure difference in the prior-stage mechanism. The pressure difference is the difference between a pressure set for the fuel before a load change in the prior-stage mechanism and a pressure set for the fuel after the load change in the prior-stage mechanism. The control device calculates a fuel supply command value, which is a command value for adjusting the amount of fuel supplied to a fuel supply device that supplies the fuel to the first power source, and is output to the fuel supply device using a fuel supply acceleration command value.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: August 18, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Masato Murayama, Takanori Tsutsumi, Yoshinori Koyama, Ken Tamura, Takashi Fujii