Patents Assigned to MITSUBISHI POWER, LTD.
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Patent number: 10969305Abstract: A planning device according to the present invention includes a remaining life specifying unit that specifies a remaining life of a component for a turbine. On the basis of the specified remaining life, a usage plan generating unit generates a usage plan that indicates the timing at which the component is to be incorporated into the turbine, such that the remaining life of the component becomes equal to or less than an allowable error value at a predetermined timing.Type: GrantFiled: October 25, 2016Date of Patent: April 6, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Toru Tanaka, Akihisa Endo, Yusuke Hazui, Masumi Nomura
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Patent number: 10967327Abstract: A spray drying system for drying wastewater to be dried includes: an exhaust as introduction line for introducing the exhaust gas discharged from an exhaust gas generation source, the exhaust gas introduction line being connected to a plurality of exhaust gas ducts for allowing the exhaust gas to flow through; and at least one spray drying device connected to the exhaust gas introduction line and configured to bring the exhaust gas introduced from the exhaust gas introduction line into contact with the wastewater. The number of spray drying device is smaller than the number of the plurality of exhaust gas ducts.Type: GrantFiled: October 11, 2017Date of Patent: April 6, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Toshihiro Fukuda, Satoru Sugita, Tetsu Ushiku, Seiji Kagawa
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Patent number: 10962344Abstract: A measuring jig includes: a base portion; a sensor holding portion disposed so as to protrude from the base portion and configured to hold a sensor; and a first protruding portion protruding from the base portion toward the same side as the sensor holding portion, at a first position different from a sensor position which is a position of a sensor installation surface on which the sensor extends, with respect to a direction orthogonal to the sensor installation surface.Type: GrantFiled: May 9, 2017Date of Patent: March 30, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Yasunori Nishioka, Takuro Kameda, Masahito Kataoka, Hitoshi Morimoto, Tetsu Konishi
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Patent number: 10962051Abstract: A support part supports a bearing pad from an outer circumferential side so as to be swingable at a pivot position. A radius of curvature of a rotary shaft is Rj, a radius of curvature of a pad surface is Rp, and a radius of curvature of a reference circle centered at an axial line and having a radius equal to a distance between a center and the pivot position on the pad surface is Rb, and a relationship of Rj<Rp<Rb is established.Type: GrantFiled: September 6, 2017Date of Patent: March 30, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Shimpei Yokoyama, Tadasuke Nishioka, Chihiro Yoshimine, Yuichiro Waki, Yuki Sumi
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Patent number: 10962223Abstract: In a soot blower, a heat transfer tube of a heat exchanger is arranged inside a pressure vessel, and gas for cleaning is injected toward the heat transfer tube from an injection pipe movable into and out of the pressure vessel. The soot blower includes a cylindrical casing provided to surround an insertion hole on the pressure vessel side into which the injection pipe is inserted, to extend outside the pressure vessel, the injection pipe being inserted into an inside of the casing; a support part provided inside the casing to guide movement of the injection pipe and to ensure airtightness between the casing and the injection pipe; and a gas supplying device provided immediately close to the support part to generate a jet stream of gas in a portion of the injection pipe that projects to the pressure vessel side.Type: GrantFiled: March 28, 2017Date of Patent: March 30, 2021Assignees: MITSUBISHI POWER, LTD., MHI PLANT CORPORATIONInventors: Gen Sakashita, Yoshinori Koyama, Takashi Yamamoto, Kenta Haari, Yasunari Shibata, Masashi Kitada, Yasushi Okuda, Masami Tsuda, Satoru Murai
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Patent number: 10961859Abstract: A seal member assembly structure and assembly method, a seal member, and a gas turbine, wherein, in a state where first flange parts provided on a combustor transition piece are fitted into first fitting parts provided in seal members, protruding parts provided on the first flange parts are inserted into recessed parts provided in the first fitting parts.Type: GrantFiled: September 1, 2016Date of Patent: March 30, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Hiroaki Kishida, Norihiko Nagai
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Patent number: 10961910Abstract: In a combustion cylinder, an outer-side region of a cooling part on an outer side with regard to a reference line orthogonal to a radial direction and an axial direction of a gas turbine and passing through a center of a combustor basket, and an inner-side region of the cooling part on an inner side with regard to the reference line are set. A connection angle at an intersection between an extension line of an outer surface of the combustor basket along the axial direction and an inner surface of a combustor transition piece is set. First regions are set at positions near the reference line, and second regions, with a larger connection angle than the first regions, are set at positions farther from the reference line than the first regions. The second regions are set to have a higher flow rate of a cooling medium than the first regions.Type: GrantFiled: October 28, 2016Date of Patent: March 30, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Kenji Sato, Kentaro Tokuyama
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Publication number: 20210087482Abstract: In order to allow for thermal elongation of a liner, a pipe member, in the interior of which flows a fluid containing solids, is provided with: a tubular outer pipe; a single tubular liner provided inside the outer pipe with a gap therebetween in the radial direction, or a plurality thereof arranged serially in the direction of the pipe axis C; a refractory material filled in between the outer pipe and the liner; a first liner holding member that is provided on an end portion side of the outer pipe, and that holds the liner arranged on the end portion side in a restrained state in the pipe axis C direction and the circumferential direction around the pipe axis C; and a second liner holding member that is provided on an end portion side of the outer pipe, and that holds the liner arranged on the end portion side.Type: ApplicationFiled: May 16, 2018Publication date: March 25, 2021Applicant: Mitsubishi Power, Ltd.Inventors: Masashi Kitada, Fumihiro Chuman
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Publication number: 20210088216Abstract: A combustor according to the present invention includes: a casing 20 having an air chamber 121 filled with air; at least one mixing passage forming member 131 forming at least one mixing passage 134 which is connected at an inlet side to the air chamber 121 and at an outlet side to a combustion chamber 124 and having an inlet 142 formed at the inlet side of the at least one mixing passage 134 so as to communicate with the air chamber 121; and at least one fuel nozzle 132 disposed inside the air chamber 121 and having a fuel injection hole 133, positioned upstream of the inlet 142 of the mixing passage forming member 131, for injecting fuel downstream.Type: ApplicationFiled: January 24, 2019Publication date: March 25, 2021Applicant: Mitsubishi Power, Ltd.Inventors: Katsuyoshi TADA, Keijiro SAITO, Satoshi TANIMURA
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Patent number: 10958073Abstract: The invention provides reactive power control equipment that controls the reactive power adjusted by a synchronous condenser coupled to an electric power grid and the reactive power of the electric power supplied to the electric power grid, to optimally control the reactive power in each load terminal point (power consumption area), considering instability of the electric power supplied from renewable energy power generation equipment.Type: GrantFiled: August 16, 2019Date of Patent: March 23, 2021Assignee: Mitsubishi Power, Ltd.Inventors: Yuuki Aida, Yasuto Tahara, Kenichi Sudo
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Patent number: 10954791Abstract: A blade removal device for removing a blade in a circumferential direction of a blade ring along a groove, the blade being engaged with the groove extending in the circumferential direction on an inner peripheral side of the blade ring, is provided with a towing part for towing the blade, a string member connecting the towing part and the blade, and a first turning part attached to the blade ring so as to be in contact with a portion of the string member between the towing part and the blade to change a direction of a towing force transmitted via the string member.Type: GrantFiled: January 10, 2017Date of Patent: March 23, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Ryota Chaki, Tadakazu Sakaguchi
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Patent number: 10953363Abstract: A method for installing a spray pipe, including an insertion step of inserting a spray pipe from an opening portion, a positioning step of positioning the spray pipe such that an installation surface of a leg portion faces a supporting surface of a supporting portion, a provisional tightening step of provisionally tightening a first fastening portion to couple an attachment flange with the opening portion, an adjusting step of adjusting the height of the installation surface relative to the supporting surface such that an axis along which a pipe portion extends coincides with the horizontal plane, in the provisionally tightened state resulting from the provisional tightening step, a coupling step of coupling the leg portion to the supporting portion by means of a second fastening portion, after the adjusting step, and a final tightening step of performing a final tightening of the first fastening portion after the coupling step.Type: GrantFiled: July 12, 2018Date of Patent: March 23, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Satoru Sugita, Tetsu Ushiku, Ryozo Sasaki, Naoyuki Yoshizumi, Tsuyoshi Miyachi, Seiji Kagawa
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Patent number: 10954853Abstract: The purpose of the present invention is to provide a furnace wall in which a throat section with a smaller channel diameter than other regions can be formed using all peripheral wall tubes. Provided is a furnace wall comprising: a plurality of peripheral wall tubes (142), which are disposed so as to form a cylindrical shape when aligned in one direction and through the interior of which cooling water flows; and fins (140) that connect neighboring peripheral wall tubes (142) in an airtight manner. In a throat section in which the diameter of a horizontal cross-section of the cylindrical shape is reduced in comparison to other regions, the peripheral wall tubes (142) are disposed so as to be in mutual contact and the fins (140) are disposed on the inner circumferential sides of the cylindrical shapes.Type: GrantFiled: October 11, 2017Date of Patent: March 23, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Fumihiro Chuman, Masashi Kitada, Makoto Toyomaru
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Patent number: 10955201Abstract: The present invention provides an economizer 70 including a plurality of cylindrical heat transfer tubes 71a-71d extending along a crossing direction crossing a flowing direction of combustion gas and disposed at a predetermined disposition interval P along the flowing direction, the combustion gas and fluid flowing in the plurality of heat transfer tubes performing heat exchange, and a swirl preventing section 75 disposed in contact with a downstream side outer circumferential surface 71Aa-71Ad in the flowing direction of each of the plurality of heat transfer tubes 71a-71d and configured to prevent a swirl of the combustion gas from occurring near the downstream side outer circumferential surface 71Aa-71Ad.Type: GrantFiled: January 24, 2019Date of Patent: March 23, 2021Assignee: MITSUBISHI POWER, LTD.Inventor: Yoshinori Yamasaki
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Patent number: 10954808Abstract: A sealing device for suppressing a leakage flow of a fluid via an annular gap between a stationary member and a rotary member of a rotary machine includes: a fixed fin having an annular shape and disposed in the annular gap; and a movable fin having an annular shape and being disposed adjacent to the fixed fin in an axial direction inside the annular gap. The movable fin has a greater thermal expansion coefficient than the fixed fin and is fixed to the fixed fin in a fixing region on a root-end side of the movable fin.Type: GrantFiled: May 23, 2016Date of Patent: March 23, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Yoshihiro Kuwamura, Hiroharu Oyama, Yoshinori Tanaka, Hideaki Sugishita
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Publication number: 20210073701Abstract: Provided is an operation support system for a desulfurization apparatus evaluates soundness of the desulfurization apparatus by comparing an analytic performance calculated based on operation data of the desulfurization apparatus and a measured performance and creates support information including an operation condition candidate set based on the evaluation result and a balance forecast.Type: ApplicationFiled: February 28, 2019Publication date: March 11, 2021Applicant: Mitsubishi Power, Ltd.Inventors: Naoyuki Kamiyama, Seiji Kagawa, Tetsu Ushiku, Shogo Mori
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Patent number: 10941865Abstract: A valve includes a valve stem, a first valve body disposed on a distal end side of the valve stem and configured to be driven via the valve stem, a first valve seat on which the first valve body is seatable, an auxiliary seat surface extending along a direction transverse to an axial direction of the valve stem, an auxiliary seat portion disposed on a proximal end side of the valve stem with respect to the first valve body and configured to abut on the auxiliary seat surface when the first valve body is closed, and a biasing member capable of generating a biasing force along the axial direction of the valve stem.Type: GrantFiled: May 19, 2017Date of Patent: March 9, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Masaki Hata, Shoichi Okawara, Kazuhito Kawamura
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Patent number: 10941677Abstract: A power plant comprises a boiler, a turbine, a condenser, a feed water heater, a deaerator, a deaerator water level control valve, an extraction system which introduces the steam extracted from the turbine into the feed water heater, an extraction valve, an auxiliary steam introduction system which introduces auxiliary steam into the feed water heater, an auxiliary steam control valve and a control device. When a rapid load increase request is made, the control device controls, to orient the extraction valve in a closing direction, to maintain an opening of the deaerator water level control valve, and to orient the auxiliary steam control valve in an opening direction.Type: GrantFiled: December 2, 2019Date of Patent: March 9, 2021Assignee: Mitsubishi Power, Ltd.Inventor: Tomoya Tomiyama
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Patent number: 10941670Abstract: A seal structure is for sealing leakage fluid flowing through a gap between a rotation member rotating about a rotation axis and a stationary member facing the rotation member. The seal structure includes seal fins projecting from a base that is one of the rotation and stationary members toward the other one, the seal fins being spaced apart from each other at a certain interval in an axial direction of the rotation axis; and a step section provided to the other one, the step section including step surfaces facing the seal fins and a riser surface between the adjacent step surfaces, the step surfaces and the riser surface defining a step portion. The seal fins are inclined upstream in a flow direction of the leakage fluid relative to a radial direction perpendicular to the rotation axis. Each seal fin and the base define a corner portion having a curved surface.Type: GrantFiled: November 24, 2016Date of Patent: March 9, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Yoshihiro Kuwamura, Eiji Konishi, Toyoharu Nishikawa, Shin Nishimoto, Hidekazu Uehara
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Patent number: 10934847Abstract: A steam turbine rotor blade includes a protrusion portion (7) which is provided on a tip end portion of a blade body (61), on which a leading edge portion (61a) is formed, in a blade height direction and protrudes from a suction-side surface (612) toward the leading edge portion (61a) side, and a transition-region seal member which is provided so as to cover at least a portion of a base end-side surface of the protrusion portion (7) and a leading edge-side transition region, which faces the leading edge portion (61a) side, of a connection portion between the protrusion portion (7) and the suction-side surface (612), the transition-region seal member being formed of a material having a hardness higher than that of the blade body (61).Type: GrantFiled: April 14, 2017Date of Patent: March 2, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Shohei Danno, Takashi Maruyama, Keiichiro Miyajima