Patents Assigned to Mitsubishi Heavy Industries Compressor Corporation
  • Patent number: 11181113
    Abstract: A rotary machine includes a first flange in which a first hole portion is formed, a second flange disposed to face the first flange via an abutting surface and having a second hole portion formed therein, and a stud bolt inserted into a first hole portion and a second hole portion and fastened to a female screw of the second hole portion, wherein the thickness of the second flange is larger than the thickness of the first flange.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: November 23, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Toshio Mizunoue, Takanori Matsueda, Daisuke Hirata
  • Patent number: 11174869
    Abstract: A rotary machine includes a rotating shaft which is rotatably provided around an axis, a casing which covers the rotating shaft from an outside in a radial direction and in which a gas flow path extending in a circumferential direction is formed, a drain pipe which is connected to a lower portion in a vertical direction of the casing and communicates with the gas flow path, an adjusting valve which is provided in the drain pipe and adjusts a flow state of a fluid in the drain pipe, and a gas flow pipe which is connected to the drain pipe at a position closer to a connection portion between the casing and the drain pipe than the adjusting valve and through which the seal gas flows.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: November 16, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Takuya Kinoshita, Yu Sayama
  • Patent number: 11162363
    Abstract: A steam turbine system 1 includes a steam turbine 10 including a plurality of rotor blades 16; a first mixed steam supply pipe 21 that supplies the steam, which is supplied from a steam supply source 40 capable of supplying the steam with fluctuating pressure, to an upstream stage Sa within the casing 11; a second mixed steam supply pipe 22 that supplies the steam to the second stepped part Sb; an adjusting unit 25 that adjusts a flow rate of the steam supplied to the first stepped part Sa and the second stepped part Sb; and a control unit 30 that controls the adjusting unit 25 on the basis of a differential pressure between a pressure P0 of the steam supplied from the steam supply source 40 and a pressure in the first stepped part Sa.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: November 2, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Takuro Koda, Kazuaki Sugimoto, Akito Kunimoto, Tomoaki Nogami
  • Publication number: 20210332826
    Abstract: A rotary machine includes a rotating shaft which is rotatably provided around an axis, a casing which covers the rotating shaft from an outside in a radial direction and in which a gas flow path extending in a circumferential direction is formed, a drain pipe which is connected to a lower portion in a vertical direction of the casing and communicates with the gas flow path, an adjusting valve which is provided in the drain pipe and adjusts a flow state of a fluid in the drain pipe, and a gas flow pipe which is connected to the drain pipe at a position closer to a connection portion between the casing and the drain pipe than the adjusting valve and through which the seal gas flows.
    Type: Application
    Filed: February 17, 2017
    Publication date: October 28, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Takuya Kinoshita, Yu Sayama
  • Publication number: 20210332722
    Abstract: A steam turbine includes a rotor, a casing, a partition plate, and a center guide pin. The center guide pin has a positioning portion. In a state of being attached to a pin attachment portion formed in one of the casing and the partition plate, the positioning portion is disposed in a groove portion formed in the other of the casing and the partition plate. The positioning portion includes a plurality of abutment portions capable of abutting on an inner side surface of the groove portion, around a pin axis. The plurality of abutment portions is formed to have different horizontal distances from the pin axis.
    Type: Application
    Filed: February 24, 2017
    Publication date: October 28, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Katsumi Terada, Hiroaki Irikawa, Yuichi Sasaki
  • Patent number: 11156089
    Abstract: Provided is a steam turbine in which, among a plurality of stages thereof, a stage that is disposed furthest upstream is a speed-adjusting stage, at least one stage that is disposed downstream of the speed-adjusting stage is a medium-pressure stage, and at least one stage that is disposed downstream of the medium-pressure stage is a low-pressure stage. The speed-adjusting stage is an impulse stage. The medium-pressure stage is a medium reaction degree impulse stage in which the degree of reaction is a medium degree of reaction of 10-40%. The low-pressure stage is a reaction stage having a higher degree of reaction than the medium-pressure stage.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: October 26, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventor: Takuro Koda
  • Publication number: 20210325177
    Abstract: The measuring jig for the rotary machine is a measuring jig for a rotary machine including a casing that extending about an axis, a rotor that is disposed in the casing and extends in an axial direction about the axis, and a plurality of bearings that are disposed at intervals in the axial direction and supports the rotor in the casing. The measuring jig includes a plurality of casing fixing portions that are respectively attachable to and detachable from bearing holding portions to which the bearings are attached in the casing; a main member that extends in the axial direction so as to connect the plurality of casing fixing portions to each other; an arm that extends from the main member in an orthogonal direction orthogonal to the axial direction; and a reference surface that is disposed at a distance from a measurement target part of the casing.
    Type: Application
    Filed: April 12, 2021
    Publication date: October 21, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Yasuhiko Kawamura, Kyoichi Ikeno, Yuzo Tsurusaki, Yuichi Sasaki
  • Publication number: 20210324877
    Abstract: A suspending tool includes a suspending tool main body that extends to be parallel with an axial direction above a rotor main body, a pair of bearing supporting portions that are disposed at an interval in the axial direction and are detachable from the bearing portions, a pair of seal supporting portions that are disposed inside the pair of bearing supporting portions in the axial direction at an interval in the axial direction and are detachable from the seal portions, and a plurality of diaphragm supporting portions that are disposed inside the pair of seal supporting portions in the axial direction such that the diaphragm supporting portions are disposed at intervals in the axial direction and are detachable from the diaphragms.
    Type: Application
    Filed: March 16, 2021
    Publication date: October 21, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventor: Hideki Yamada
  • Patent number: 11150127
    Abstract: A vibrometer assembly including a vibrometer configured to measure vibration of a rotating shaft, includes: a probe of the vibrometer that is to be secured to a bearing device that supports the rotating shaft; a guide cylinder that is to be provided to a case so as to penetrate the case and protrude into the case, the case being located outside the bearing device; an attachment that is to be connected to the probe and inserted into the guide cylinder, and at least partially has a movable portion to allow the probe to be axially aligned with an inside securing portion in the bearing device; and an outside securing portion that secures the attachment to the guide cylinder or the case outside the case.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: October 19, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventor: Takashi Oda
  • Patent number: 11149549
    Abstract: A blade of a steam turbine includes a plurality of turbine blade rows which are fixed to a radially outer side of a rotor shaft rotating about an axis, and are arranged in an axial direction in which the axis extends, and a turbine vane row which is disposed to be adjacent to an upstream side of the turbine blade row in the axial direction for each of the plurality of turbine blade rows, the blade of a steam turbine including a blade body which is disposed in a steam main flow path which is formed around a rotary shaft such that main steam flows through the steam main flow path, the blade body having an airfoil cross section in which a concave positive-pressure surface and a convex negative-pressure surface are continuous to each other via a leading edge and a trailing edge.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: October 19, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventor: Takuro Koda
  • Patent number: 11149750
    Abstract: A silencing device includes: a flow path forming plate having a flow path forming surface for forming a wall surface of a flow path through which fluid flows; and a cavity defining portion for defining a cavity on the reverse surface side of the flow path forming plate, the reverse surface being located on the reverse side of the flow path forming surface. The flow path forming plate has formed therein a plurality of fine through-holes which are configured to provide communication between the flow path forming surface and the reverse surface and which has a diameter from 0.01 mm to 0.5 mm.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: October 19, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Yoshiko Takei, Toshifumi Kudo, Hirofumi Higuchi
  • Patent number: 11143206
    Abstract: A rotary machine includes: a pair of radial bearings for rotatably supporting a rotating shaft around a center axis; impellers fixed to the rotating shaft at positions separated from the radial bearings in a center axis direction; and additional masses fixed to the rotating shaft at positions separated from both the radial bearings and the impellers in the center axis direction, and applying a load to an entire circumference of the rotating shaft so as to move positions of amplitude increase regions where an amplitude in a radial direction of the rotating shaft starts to increase.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: October 12, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventor: Yuji Masuda
  • Patent number: 11143198
    Abstract: An impeller 1 according to the present invention includes a disc portion 30 fixed to a rotary shaft 101 that rotates around an axis line O, a cover portion 50 disposed to face the disc portion 30, and a plurality of blade portions 40 provided between the disc portion 30 and the cover portion 50. The impeller 1 includes a first segment SG1 configured of a first disc portion 31 that is a portion of the disc portion 30 on one side of the axis line O, a second segment SG2 in which a second disc portion 35 that is a portion of the disc portion 30 on another side of the axis line O, the cover portion 50, and the blade portions 40 are integrally configured, and a joining layer CL configured to join, by friction welding, the first segment SG1 and the second segment SG2.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: October 12, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventor: Yuya Konno
  • Patent number: 11143205
    Abstract: A compressor 1 includes a base 10 that is fixed on a foundation F and supports a compressor main body 20 from below in a vertical direction Dv, and a connecting part that detachably connects the compressor main body 20 and the base 10 to each other. The compressor main body 20 includes a suction-side protruding pipe 28A and a discharge-side protruding pipe 28B that communicate between an inside and an outside of a casing 21 and protrude outward from an outer peripheral surface of the casing 21. The base 10 includes a support base 11 having a support surface 11f for supporting a lower part of the casing 21, and a suction port 12 that extends downward from the support base 11 in the vertical direction Dv and has a through-hole into which the suction-side protruding pipe 28A is inserted.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: October 12, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Takashi Oda, Daisuke Hirata
  • Publication number: 20210299812
    Abstract: A manufacturing method of an impeller, the manufacturing method includes: a step of forming an impeller shaped body in which a disc component part constituting a part of the disc, a blade component part constituting a part of the blade, and a cover component part constituting a part of the cover are integrated by laminating a metal layer to extend toward an outer side in a radial direction with respect to the axis by an additive manufacturing method using a metal powder; and a step of grinding the impeller shaped body, in which the steps are repeated a plurality of times, and the step of grinding the impeller shaped body includes a step of polishing an inner surface of the impeller shaped body constituting a part of the flow path.
    Type: Application
    Filed: March 18, 2021
    Publication date: September 30, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventor: Yasunori Sakai
  • Publication number: 20210301831
    Abstract: The impeller includes a disc having a main surface extending outward in a radial direction toward one side in an axial direction, a plurality of blades defining a flow path extending to an outlet on one side from an inlet on the other side in the axial direction, and a cover disposed to cover the plurality of blades. At least one of an inlet side region and an outlet side region which are a connection portion between the blade and the main surface and a connection portion between the blade and the cover has a small fillet portion curved in an arc shape and having a small radius of curvature. An intermediate region formed between the inlet side region and the outlet side region has a large fillet portion having a large radius of curvature.
    Type: Application
    Filed: March 2, 2021
    Publication date: September 30, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Shuichi Yamashita, Miku Kuroda, Hiroaki Oka
  • Publication number: 20210301971
    Abstract: A supporting platform which supports a rotating machine on a base, includes: a pair of supporting bodies which is provided on the base to be separated from each other in a horizontal direction; a supporting column which is provided on the supporting body, extends upward in a vertical direction, and supports a supporting target portion provided in the rotating machine; an outer adjustment member which supports the supporting body on the base and adjusts a height of the supporting body with respect to the base; and an inner adjustment member which is disposed inside the outer adjustment member in a separation direction of the pair of supporting bodies, supports the supporting body on the base, and adjusts the height of the supporting body with respect to the base.
    Type: Application
    Filed: September 14, 2016
    Publication date: September 30, 2021
    Applicants: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION, MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventor: Norio Aratani
  • Patent number: 11131319
    Abstract: A centrifugal compressor is provided with a plurality of diaphragms including a first diaphragm and a second diaphragm which are adjacent to each other in an axial direction, a casing disposed on a radially outer side of the plurality of diaphragms and accommodating an internal component including the plurality of diaphragms, at least one axial spacer disposed between the first diaphragm and the second diaphragm, and a scroll flow passage formed by a scroll inner peripheral wall and a scroll outer peripheral wall. The scroll inner peripheral wall is formed by a surface of the first diaphragm positioned on a radially inner side of an outer peripheral surface of the first diaphragm. At least a part of the scroll outer peripheral wall is formed by an inner peripheral surface of the casing.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: September 28, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Akihiro Nakaniwa, Akinori Tasaki, Daisuke Hirata
  • Publication number: 20210293611
    Abstract: A vibrometer assembly including a vibrometer configured to measure vibration of a rotating shaft, includes: a probe of the vibrometer that is to be secured to a bearing device that supports the rotating shaft; a guide cylinder that is to be provided to a case so as to penetrate the case and protrude into the case, the case being located outside the bearing device; an attachment that is to be connected to the probe and inserted into the guide cylinder, and at least partially has a movable portion to allow the probe to be axially aligned with an inside securing portion in the bearing device; and an outside securing portion that secures the attachment to the guide cylinder or the case outside the case.
    Type: Application
    Filed: December 6, 2016
    Publication date: September 23, 2021
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventor: Takashi Oda
  • Patent number: 11125236
    Abstract: A casing surrounds a rotary shaft and impellers (4), and includes a return flow path through which a fluid discharged from the impeller (4) on a front stage side between the impellers (4) adjacent to each other is guided inward in a radial direction so as to be introduced to the impeller (4) on a rear stage side, and a plurality of return vanes (50) disposed at an interval in a circumferential direction inside the return flow path. An exit angle of the return vane (50) is inclined forward in a rotation direction of the impeller (4), according to the radial direction, and the exit angle of the return vane (50) decreases toward the return vane (50) on the rear stage side.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: September 21, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventor: Shuichi Yamashita