Patents by Inventor Hideaki Sugishita

Hideaki Sugishita 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: 10927713
    Abstract: An intake air cooling device includes a water supply line and a heat pump device. The water supply line is configured to send water to a waste heat recovery boiler which is configured to generate steam using heat of an exhaust gas from a gas turbine. The heat pump device is configured to transfer heat of air suctioned by the gas turbine to water flowing through the water supply line and thereby cool the air while heating the water.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: February 23, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hideyuki Uechi, Eisaku Ito, Hideaki Sugishita, Naoki Hisada
  • Patent number: 10844753
    Abstract: A boiler including one or more evaporators, an economizer, and a low-temperature heat exchanger. The economizer is located on a downstream side of the most downstream evaporator which is an evaporator at the most downstream side among the one or more evaporators. The low-temperature heat exchanger is located on the downstream side of the economizer, has an inlet for receiving water from the outside, and is configured to heat the water introduced from the inlet and sent to the economizer with the combustion gas.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: November 24, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Hideyuki Uechi, Hiroyuki Yagita, Kuniaki Aoyama, Hideaki Sugishita, Yukimasa Nakamoto, Yuichi Oka, Naoki Hisada, Tarou Ichihara
  • Publication number: 20200325799
    Abstract: A gas turbine includes: a compressor configured to compress air; a combustor configured to combust fuel in the air compressed by the compressor so as to generate combustion gas; and a turbine configured to be driven using the combustion gas. Air coolers are configured to bleed the air from a plurality of places having different pressures in the compressor and cool the air bled from the respective places so as to generate cooling air. A waste heat recovery device is configured to recover waste heat from at least two of the air coolers.
    Type: Application
    Filed: May 6, 2020
    Publication date: October 15, 2020
    Inventors: Hideyuki UECHI, Hideaki SUGISHITA, Yukimasa NAKAMOTO, Yuichi OKA
  • Patent number: 10794209
    Abstract: A tip shroud of a turbine rotor blade includes at least one first through hole. The first through hole includes a first opening and a second opening, the first opening penetrating the tip shroud in a radial direction so as to bring a first cavity and an inter-blade flow passage into communication. The first cavity is defined between a first seal fin and a second seal fin. The first seal fin extending in the radial direction on an outer side in a radial direction of the tip shroud, and the second seal fin extending in the radial direction at a position spaced part from the first seal fin in a direction of an axis of a rotor body. The first opening is formed at an intermediate position between the first seal fin and the second seal fin. The second opening is formed at a position facing the inter-blade flow passage.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: October 6, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazuyuki Matsumoto, Hideaki Sugishita
  • Patent number: 10731499
    Abstract: A seal device for a turbine is disposed around a rotor so as to separate a high-pressure space and a low-pressure space and includes: a plurality of thin plates arranged along an outer peripheral surface of the rotor. Each of the thin plates has a thin-plate tip surface facing the outer peripheral surface of the rotor; a first side plate disposed so as to face the high-pressure space and covering outer peripheral regions of first side surfaces; and a second side plate disposed so as to face the low-pressure space and covering outer peripheral regions of second side surfaces. The first side surface of each of the thin plates is covered with the first side plate in a region extending further to an inner side, in a radial direction of the rotor, than a region of the second side surface covered with the second side plate.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: August 4, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Azumi Yoshida, Hidekazu Uehara, Hiroharu Oyama, Kohei Ozaki, Katsuhisa Hamada, Hideaki Sugishita, Toyoharu Nishikawa, Yoshihiro Kuwamura, Kohei Hatano, Keisuke Matsuyama
  • Patent number: 10718434
    Abstract: There are provided a step seal, a seal structure, a turbo machine, and a method for manufacturing a step seal. The step seal suppresses leak of a fluid from a gap between a first structure and a second structure and is formed on the first structure so as to have a clearance between the step seal and a seal fin formed on the second structure. The first structure and the second structure face each other in a radius direction with the gap inbetween and rotate around an axis line relative to each other. The step seal includes: a step seal body having a step face facing an upstream side of a flow direction of the fluid and an opposed face facing the second structure; and a protrusion formed between the step face and the opposed face.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: July 21, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Toyoharu Nishikawa, Yoshihiro Kuwamura, Hiroharu Oyama, Katsuhisa Hamada, Hideaki Sugishita
  • Publication number: 20200173309
    Abstract: A steam turbine (ST) includes a rotor (11) which is rotatable around an axis (Ar), an inner casing (21) surrounding the rotor (11) from an outer peripheral side, an outer casino (30) surrounding the rotor (11) and the inner casing (21) and defining an exhaust chamber between the inner casing (21) and the outer casing (30), the steam being exhausted to the exhaust chamber (30s), and a flow guide (27) which has a tubular shape and is installed on one end portion of the inner casing 21 in an axial direction (Da) in the exhaust chamber (30s) to guide the steam discharged from the rotor (11). The flow guide (27) has a turning surface (RA) which is connected to an outer peripheral surface (27A) and turns a fluid flowing along the outer peripheral surface (27A) toward the other side in the axial direction (Da).
    Type: Application
    Filed: August 15, 2018
    Publication date: June 4, 2020
    Applicant: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Hideaki Sugishita, Soichiro Tabata, Toyoharu Nishikawa, Tadashi Takahashi, Kazuyuki Matsumoto, Yoshihiro Kuwamura
  • Patent number: 10662796
    Abstract: A seal device for a turbine includes: a plurality of thin plates arranged along an outer peripheral surface of the rotor, each of the thin plates including a root portion disposed on an outer side in a radial direction of the rotor and supported on a stationary part of the turbine and a tip portion disposed on an inner side in the radial direction of the rotor and having a tip surface facing the outer peripheral surface of the rotor. Each of the thin plates is configured such that a width direction of the thin plate is parallel to an axial direction of the rotor at a side of the root portion, and the tip portion of each of the thin plates is configured such that an end on a side of the high-pressure space is positioned downstream of another end on a side of the low-pressure side.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: May 26, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Azumi Yoshida, Hidekazu Uehara, Hiroharu Oyama, Kohei Ozaki, Katsuhisa Hamada, Hideaki Sugishita, Toyoharu Nishikawa, Yoshihiro Kuwamura, Kohei Hatano, Keisuke Matsuyama
  • Publication number: 20200056500
    Abstract: A steam turbine (1) includes an inner casing (3) which has an inner casing body (15) in which a first main flow path (11) to which steam is supplied from an inner introduction port (16) is formed, an outer casing (5) which has an outer casing body (20) which forms a second main flow path (120) between the inner casing body (15) and the outer casing body (20) and an upper discharge port (23) and a lower discharge port (24) which are provided in the outer casing body (20) and through which exhaust steam (S2) is discharged, an upper valve (7) and a lower valve (8) which adjust a flow rate of the discharged exhaust steam (S2), and a control unit (9) which can independently control the upper valve (7) and the lower valve (8).
    Type: Application
    Filed: October 20, 2017
    Publication date: February 20, 2020
    Inventors: Hideyuki UECHI, Hideaki SUGISHITA, Takumi MATSUMURA, Ryo EGAMI
  • Publication number: 20190376403
    Abstract: In an axial turbomachinery related to the invention, a structural body has a casing fin, a blade is provided with an upstream inclined surface that is inclined from an upstream side toward a downstream side, the structural body is provided with an upstream inclined inner wall surface that is inclined from the upstream side the downstream side, an inclination angle of the upstream inclined surface with respect to a central axis of relative rotation between the blade and the structural body is larger than an inclination angle of the upstream inclined inner wall surface with respect to the central axis, and an end position of the upstream inclined surface on a radially inner side is located radially outside an end position of the upstream inclined inner wall surface on the radially inner side.
    Type: Application
    Filed: February 23, 2018
    Publication date: December 12, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Eiji Konishi, Yoshihiro Kuwamura, Kazuyuki Matsumoto, Shinji Fukao, Hideaki Sugishita
  • Publication number: 20190360350
    Abstract: A steam turbine includes a rotating shaft (1); a rotor blade (4) having a platform (43) and a rotor blade main body (40); a casing (2); a stationary blade (7) having a stationary blade main body (70) and a stator shroud (71); and a projecting portion (45A) that projects from the platform (43) toward a upstream side in a central axis direction (Da). The projecting portion (45A) has, on a side thereof facing a radially inner side, a guide surface (45f) that gradually inclines or curves radially inward from a base end portion (45s) on the platform (43) side to a tip end portion (45t) on an upstream side in the central axis direction (Da).
    Type: Application
    Filed: February 16, 2018
    Publication date: November 28, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masataka Mori, Shinji Fukao, Hideaki Sugishita, Kazuyuki Matsumoto, Yoshihiro Kuwamura
  • Patent number: 10480411
    Abstract: A waste heat recovery device includes: a low-boiling-point medium Rankine cycle in which a low-boiling-point medium circulates while the low-boiling-point medium is repeatedly condensed and evaporated; a heated water line that guides liquid water, which is heated here, to the low-boiling-point medium Rankine cycle from a waste heat recovery boiler; and a water recovery line that returns the water, which has passed through the low-boiling-point medium Rankine cycle, to the waste heat recovery boiler. The low-boiling-point medium Rankine cycle includes a heater that heats the low-boiling-point medium by exchanging heat between the low-boiling-point medium, which is a liquid, and liquid water, which has passed through the heated water line.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: November 19, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Hideyuki Uechi, Hideaki Sugishita, Yukimasa Nakamoto, Yuichi Oka
  • Publication number: 20190301297
    Abstract: A tip shroud of a turbine rotor blade includes at least one first through hole. The first through hole includes a first opening and a second opening, the first opening penetrating the tip shroud in a radial direction so as to bring a first cavity and an inter-blade flow passage into communication. The first cavity is defined between a first seal fin and a second seal fin. The first seal fin extending in the radial direction on an outer side in a radial direction of the tip shroud, and the second seal fin extending in the radial direction at a position spaced part from the first seal fin in a direction of an axis of a rotor body. The first opening is formed at an intermediate position between the first seal fin and the second seal fin. The second opening is formed at a position facing the inter-blade flow passage.
    Type: Application
    Filed: February 21, 2019
    Publication date: October 3, 2019
    Inventors: Kazuyuki MATSUMOTO, Hideaki SUGISHITA
  • Publication number: 20190277163
    Abstract: A steam turbine exhaust chamber defining therein an exhaust passage through which steam having passed through a last-stage blade of a steam turbine is introduced to a condenser includes: a casing including an outer peripheral wall portion formed on an outer peripheral side of the exhaust passage; a bearing cone disposed on a radially inner side of the outer peripheral wall portion; and at least one bypass passage carrying a part of steam flowing through the exhaust passage from a high-pressure portion of the exhaust passage to a low-pressure portion of the exhaust passage or to the condenser, The at least one bypass passage includes a high-pressure-side opening formed in the bearing cone and a low-pressure-side opening facing steam having a lower pressure than steam facing the high-pressure-side opening.
    Type: Application
    Filed: February 12, 2019
    Publication date: September 12, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Toyoharu Nishikawa, Hideaki Sugishita, Kazuyuki Matsumoto, Yoshihiro Kuwamura, Kei Nakanishi
  • Publication number: 20190277139
    Abstract: A steam turbine apparatus includes: an exhaust chamber which defines an exhaust flow passage; an outside casing including a radially outer wall portion formed on a radially outer side of the exhaust flow passage; an inside casing including a radially inner wall portion disposed on an inner side of the radially outer wall portion; a flow guide disposed on an end portion at a downstream side of the radially inner wall portion, the flow guide having a tubular shape whose distance from an axial center of the steam turbine increases along the flow direction; and at least one bypass flow passage connecting a first inner space upstream of the last stage rotor blade and a second inner space positioned at an outer side of the flow guide. The at least one bypass flow passage extends along an outer peripheral surface of the flow guide.
    Type: Application
    Filed: March 1, 2019
    Publication date: September 12, 2019
    Inventors: Kazuyuki MATSUMOTO, Yoshihiro KUWAMURA, Hideaki SUGISHITA, Toyoharu NISHIKAWA, Kei NAKANISHI, Makoto KONDO
  • Patent number: 10316675
    Abstract: A seal device of a turbine includes: at least one step surface disposed on a radially outer surface of a rotor blade facing a first radial-directional gap or on an outer peripheral surface of a rotor facing a second radial-directional gap, the at least one step surface facing upstream in a flow direction of a fluid and dividing the radially outer surface of the rotor blade or the outer peripheral surface of the rotor into at least two sections in an axial direction of the rotor; at least two seal fins protruding toward the at least two sections, respectively, from a surrounding member or the stationary vane, and facing the at least two sections via a seal gap, respectively, the at least two seal fins forming a cavity which extends over the at least one step surface in the axial direction of the rotor between each other.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: June 11, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yoshihiro Kuwamura, Hiroharu Oyama, Yoshinori Tanaka, Hideaki Sugishita
  • Patent number: 10316680
    Abstract: A turbine is provided with a seal device. The seal device includes: at least one step surface disposed in a region of an outer peripheral surface of a rotor facing a shroud of a stationary vane in the radial direction of the rotor, the at least one step surface facing upstream in a flow direction of the fluid and dividing the region of the outer peripheral surface into at least two sections in an axial direction of the rotor: at least two seal fins protruding toward the at least two sections from the stationary vane and facing the at least two sections via a seal gap; and a swirling-component application portion disposed on an end side of the shroud of the stationary vane with respect to the axial direction of the rotor and configured to be capable of applying a swirling component to the fluid flowing toward the seal gap.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: June 11, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yoshihiro Kuwamura, Hiroharu Oyama, Yoshinori Tanaka, Hideaki Sugishita
  • Patent number: 10287922
    Abstract: A boiler includes one or more evaporators configured to heat water which has flowed therein to a specific heat maximum temperature at constant pressure or more in which a specific heat at constant pressure is maximized using a heated fluid and one or more reheaters configured to heat the steam which has come from the boiler using the heated fluid. All the reheaters configured to supply steam to a low-pressure steam turbine are disposed only at a downstream side of the high-pressure evaporator. All the reheaters heat reheating steam (FRHS) containing steam which has passed through a high-pressure steam turbine configured to receive steam supplied from the high-pressure evaporator and having a temperature lower than a specific heat maximum temperature at constant pressure in the high-pressure evaporator to less than the specific heat maximum temperature at constant pressure.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: May 14, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hideyuki Uechi, Hideaki Sugishita, Yuichi Oka
  • Publication number: 20180372158
    Abstract: There are provided a seal fin, a seal structure, and a turbo machine that can achieve a high leak-suppressing effect and can reduce leak loss of the turbo machine. The disclosure suppresses leak of a fluid from a gap between a first structure being in a static state and a second structure rotating around an axis line and is formed on the first structure so as to extend toward the second structure while keeping a clearance between a tip face thereof on an extending direction and the second structure. The first structure and the second structure face each other in a radius direction with the gap inbetween. A plurality of hollows opening at a tip on the extending direction are arranged along a circumference direction in parallel with each other on a front face facing an upstream side of a flow direction of the fluid.
    Type: Application
    Filed: November 28, 2016
    Publication date: December 27, 2018
    Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Toyoharu Nishikawa, Yoshihiro Kuwamura, Hiroharu Oyama, Katsuhisa Hamada, Hideaki Sugishita
  • Publication number: 20180355743
    Abstract: There are provided a seal fin, a seal structure, a turbo machine, and a method for manufacturing a seal fin. The seal fin suppresses leak of a fluid from a gap between a first and a second structures facing each other in a radius direction, and is formed on the first structure while keeping a clearance with respect to the second structure. The seal fin includes: a fin main body extending in the radius direction; and a protrusion being formed between a front face of the fin main body and a tip face and protruding toward an upstream side. A length of the protrusion is 1.5 times a length of the fin main body or less; an angle of the protrusion is 75 degrees or less; and a tilt angle of the fin main body is set in a range of ?60 degrees or more and 60 degrees or less.
    Type: Application
    Filed: November 29, 2016
    Publication date: December 13, 2018
    Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Toyoharu Nishikawa, Yoshihiro Kuwamura, Hiroharu Oyama, Katsuhisa Hamada, Hideaki Sugishita