Patents by Inventor Shunsuke Mizumi
Shunsuke Mizumi 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).
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Publication number: 20230288238Abstract: The sensor of a fluid sensor system includes an outer peripheral sensor unit including three or more sensor pairs to surround and sandwich the heating element. The computing device of the system includes a first identification unit identifies a sensor pair in which an output difference between an output value corresponding to a temperature detected by one temperature sensor of the sensor pair and an output value corresponding to a temperature detected by the other temperature sensor of the sensor pair is largest, a second identification unit identifies other sensor pairs adjacent to the identified sensor pair in the circumferential direction, and a flow direction estimation unit estimates the flow direction of the fluid on the basis of the output difference in the sensor pair having the largest output difference and output differences in the other sensor pairs adjacent to the sensor pair in the circumferential direction.Type: ApplicationFiled: February 28, 2023Publication date: September 14, 2023Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo University of Science FoundationInventors: Shunsuke MIZUMI, Naoto OMURA, Masahiro MOTOSUKE, Daiki SHIRAISHI, Koichi MURAKAMI
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Publication number: 20230167746Abstract: This stationary turbine blade comprises: a stationary blade main body extending in the radial direction intersecting the flow direction of steam; a hydrophilic region which is formed on the surface of the stationary blade main body and which has a higher hydrophilicity than the other parts and has the radial dimension gradually increasing toward the downstream side in the flow direction; and a collecting portion which is provided on the downstream side of the hydrophilic region and which collects a liquid film flowing along the hydrophilic region.Type: ApplicationFiled: January 12, 2023Publication date: June 1, 2023Inventors: Chongfei DUAN, Shunsuke MIZUMI, Soichiro TABATA, Koji ISHIBASHI
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Publication number: 20230111300Abstract: A turbine includes a rotor including a rotation shaft that rotates around an axis and a blade row formed on an outer surface of the rotation shaft; a casing, which covers the rotor, has a casing inner surface being expanded radially outward approaching a downstream side of the casing in a direction of the axis; and an inner member body formed to line the casing inner surface of the casing such that an extraction port is formed between an upstream side end of the inner member body and the casing inner surface. A discharge port is formed between a downstream side end of the inner peripheral member body and the casing inner peripheral surface. The extraction port and the discharge port are formed in an annular shape centered on the axis. A flow path cross-sectional area of the discharge port is smaller than that of the extraction port.Type: ApplicationFiled: January 26, 2021Publication date: April 13, 2023Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yoshihiro Kuwamura, Shigeo Ookura, Shunsuke Mizumi, Chongfei Duan, Hideaki Sugishita, Kazuyuki Matsumoto, Naoto Omura
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Publication number: 20230097598Abstract: In an assembly method for a turbine, measured shape data is acquired by measuring a shape for each of a plurality of casing components in a state in which the plurality of casing components are not fastened to each other. self-weighted state shape data, which is shape data when self-weight is applied, is created for each of the plurality of casing components. A reference shape model is corrected based on a difference between the measured shape data of a target measurement part and the self-weighted state shape data of the target measurement part. By using the corrected shape model, fastened state shape data, which is shape data in a state in which the plurality of casing components are fastened to each other, is estimated for each of the plurality of casing components.Type: ApplicationFiled: December 4, 2020Publication date: March 30, 2023Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Satoshi Kumagai, Shunsuke Mizumi, Koji Ishibashi, Juichi Kodera
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Publication number: 20230020601Abstract: This fin tip position measurement method comprises: a jig installation step for installing a jig having a flat measurement surface expanded in a circumferential direction and an axial direction to a tip of at least one among a plurality of seal fins that protrude in a radial direction with respect to an axial line, extend in the circumferential direction, and are arranged in a direction in which the axial line extends; a first measurement step for measuring a distance from the axial line to the measurement surface by scanning the measurement surface with a laser beam; and a first calculation step for calculating a distance from the axial line to the tip of the seal fin by adding a radial dimension of the jig to the distance to the measurement surface.Type: ApplicationFiled: September 2, 2022Publication date: January 19, 2023Inventors: Shunsuke MIZUMI, Jose Carlos KUROKI RAMIREZ, Koji ISHIBASHI, Juichi KODERA, Satoshi KUMAGAI, Masaru SEKIHARA
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Publication number: 20220381157Abstract: This turbine stator vane extends in the radial direction which intersects the flow direction of steam, and includes a pressure surface facing the upstream side in the flow direction, and a suction surface facing the downstream side in the flow direction. A plurality of grooves are formed in at least the pressure surface, the grooves extending outward in the radial direction toward the downstream side. At the periphery of the grooves in the pressure surface, formed is a hydrophilic uneven region having greater hydrophilic properties than the pressure surface. The downstream-side ends of the plurality of grooves are connected to slits for capturing a liquified component of the steam.Type: ApplicationFiled: December 11, 2020Publication date: December 1, 2022Inventors: Shunsuke MIZUMI, Soichiro TABATA, Chongfei DUAN, Koji ISHIBASHI
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Publication number: 20220235667Abstract: A steam turbine includes a rotary shaft, a blade provided on an outer peripheral surface of the rotary shaft, a casing covering the rotary shaft and the blade from an outer peripheral side, a vane provided on an inner peripheral surface of the casing, and a seal device including a seal ring provided between the outer peripheral surface and the vane and a position adjusting portion configured to adjust a position of the seal ring in a radial direction. A seal clearance adjusting method includes a measurement step of measuring a length of the seal ring in the radial direction from a predetermined reference position as a reference length, a preparation step of preparing an unused seal ring, and an adjustment step of adjusting a length of the unused seal ring from the reference position to be the reference length by the position adjusting portion.Type: ApplicationFiled: May 28, 2020Publication date: July 28, 2022Inventors: Shunsuke MIZUMI, Ketsu KO, Juichi KODERA, Masayuki KAYAHARA
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Patent number: 11352908Abstract: A turbine stator blade (21) includes a pressure side (21P) extending in a radial direction intersecting a flowing direction of steam and facing upstream in the flowing direction. A slit (5) capturing droplets generated by liquefaction of the steam is formed on a downstream side of the pressure side (21P). A fine uneven region (6), which guides the droplets attached to the pressure side (21P) in the radial direction such that the droplets are moved toward the slit (5) and from upstream toward downstream, is formed in a further upstream position than the slit (5). The fine uneven region (6) has a flow resistance to the droplets gradually increasing from inward to outward in the radial direction.Type: GrantFiled: February 26, 2020Date of Patent: June 7, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Shunsuke Mizumi, Chongfei Duan, Yasuhiro Sasao, Soichiro Tabata
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Publication number: 20220154586Abstract: A turbine stator blade (21) includes a pressure side (21P) extending in a radial direction intersecting a flow direction of steam, and facing upstream in the flow direction. A slit (5) extending in the radial direction and capturing a liquefied component of the steam is formed on a downstream side of the pressure side (21P). A hydrophilic uneven region (6) having a liquid film capacity greater than that of the pressure side (21P) by being recessed in a depth direction intersecting the pressure side (21P) is formed in a further upstream position than the slit (5). The hydrophilic uneven region (6) has a depth in the depth direction increasing and a flow resistance decreasing toward downstream and toward the slit (5).Type: ApplicationFiled: February 14, 2020Publication date: May 19, 2022Inventors: Shunsuke MIZUMI, Chongfei DUAN, Yasuhiro SASAO, Soichiro TABATA
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Publication number: 20220154585Abstract: A turbine stator blade (21) includes a pressure side (21P) extending in a radial direction intersecting a flowing direction of steam and facing upstream in the flowing direction. A slit (5) capturing droplets generated by liquefaction of the steam is formed on a downstream side of the pressure side (21P). A fine uneven region (6), which guides the droplets attached to the pressure side (21P) in the radial direction such that the droplets are moved toward the slit (5) and from upstream toward downstream, is formed in a further upstream position than the slit (5). The fine uneven region (6) has a flow resistance to the droplets gradually increasing from inward to outward in the radial direction.Type: ApplicationFiled: February 26, 2020Publication date: May 19, 2022Inventors: Shunsuke MIZUMI, Chongfei DUAN, Yasuhiro SASAO, Soichiro TABATA
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Publication number: 20220057186Abstract: A method and system for measuring a turbine shape is provided in which an appropriate measurement accuracy can be achieved that is sufficient to prevent a failure to recognize features of shape of a measurement object, with extension of a measurement time suppressed. In a turbine including casings, recesses and protrusions on flange surfaces of the casings are measured at measurement intervals M set on the basis of the entire length L of flange portions in an axial direction, the number of bolts N joining the flange portions, and intervals between the bolts in the axial direction of the flange portions.Type: ApplicationFiled: November 8, 2021Publication date: February 24, 2022Inventors: Koji Ishibashi, Shunsuke Mizumi, Kenji Yashirodai, Jie Huang
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Patent number: 11215437Abstract: A method and system for measuring a turbine shape is provided in which an appropriate measurement accuracy can be achieved that is sufficient to prevent a failure to recognize features of shape of a measurement object, with extension of a measurement time suppressed. In a turbine including casings, recesses and protrusions on flange surfaces of the casings are measured at measurement intervals M set on the basis of the entire length L of flange portions in an axial direction, the number of bolts N joining the flange portions, and intervals between the bolts in the axial direction of the flange portions.Type: GrantFiled: March 27, 2020Date of Patent: January 4, 2022Assignee: Mitsubishi Power, Ltd.Inventors: Koji Ishibashi, Shunsuke Mizumi, Kenji Yashirodai, Jie Huang
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Patent number: 11203941Abstract: 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: GrantFiled: September 10, 2020Date of Patent: December 21, 2021Assignee: Mitsubishi Power, Ltd.Inventors: Susumu Nakano, Koji Ishibashi, Shunsuke Mizumi, Masaki Matsuda, Takeshi Kudo
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Patent number: 11149589Abstract: In assembling a turbine including: a casing consisting of an upper half part and a lower half part fastened together by bolts; a stationary body accommodated in the casing and supported by the lower half part; and a rotary body supported by a plurality of bearings so as to be situated on the inner side of the stationary body, there are executed: a procedure of reading a finite element model of the three-dimensional configuration of the turbine; a reading procedure of reading actual measurement information on the three-dimensional configuration of the upper half part and the lower half part of the casing in the open state; a model correction procedure of reflecting actual measurement information of an evaluated portion that is a specific part of the casing in the finite element model and generating a correction model obtained through correction of the finite element model; a deformation amount estimation procedure of estimating the movement amount of the evaluated portion generated when the upper half part andType: GrantFiled: October 3, 2018Date of Patent: October 19, 2021Assignee: Mitsubishi Power, Ltd.Inventors: Kenji Yashirodai, Shunsuke Mizumi, Koji Ishibashi, Jie Huang, Juichi Kodera
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Publication number: 20200408098Abstract: 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: ApplicationFiled: September 10, 2020Publication date: December 31, 2020Inventors: Susumu NAKANO, Koji ISHIBASHI, Shunsuke MIZUMI, Masaki MATSUDA, Takeshi KUDO
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Publication number: 20200326172Abstract: A method and system for measuring a turbine shape is provided in which an appropriate measurement accuracy can be achieved that is sufficient to prevent a failure to recognize features of shape of a measurement object, with extension of a measurement time suppressed. In a turbine including casings, recesses and protrusions on flange surfaces of the casings are measured at measurement intervals M set on the basis of the entire length L of flange portions in an axial direction, the number of bolts N joining the flange portions, and intervals between the bolts in the axial direction of the flange portions.Type: ApplicationFiled: March 27, 2020Publication date: October 15, 2020Inventors: Koji ISHIBASHI, Shunsuke MIZUMI, Kenji YASHIRODAI, Jie HUANG
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Patent number: 10794196Abstract: 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: GrantFiled: November 8, 2018Date of Patent: October 6, 2020Assignee: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Susumu Nakano, Koji Ishibashi, Shunsuke Mizumi, Masaki Matsuda, Takeshi Kudo
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Patent number: 10635086Abstract: The invention is directed to maintaining the accuracy in the positional adjustment of a stationary part while shortening a turbine assembly period through the omission of the temporary assembly of a casing.Type: GrantFiled: April 19, 2018Date of Patent: April 28, 2020Assignee: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Kenji Yashirodai, Juichi Kodera, Shunsuke Mizumi, Koji Ishibashi
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Patent number: 10502098Abstract: A turbine assembly method includes a positional information measurement process in which positional information on a plurality of specific portions set on an outer surface of a casing is measured in a state before releasing of bolt fastening of the casing at a time of disassembly of the turbine and in a predetermined disassembly state after the releasing of the bolt fastening, and an alignment process in which positional adjustment of a stationary component with respect to the casing is made based on the measurement results of the positional information on the specific portions in the positional information measurement process.Type: GrantFiled: November 21, 2017Date of Patent: December 10, 2019Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Shunsuke Mizumi, Juichi Kodera, Koji Ishibashi
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Patent number: 10378388Abstract: An exhaust hood for a steam turbine includes a bearing cone; an annular flow guide; and an external casing surrounding the bearing cone and the flow guide. Meridional shapes of the flow guide at respective circumferential positions are shapes obtained by rotating one representative shape around an upstream end of the representative shape in a meridional plane and by reducing or maintaining a radial length of the representative shape. A circumferential distribution of inclination angles of an upstream end of the flow guide with respect to a center axis of a turbine rotor of the steam turbine has representative inclination angles at respective representative positions in the circumferential direction. The circumferential distribution between the representative positions is defined by a linear interpolation. Each representative position is a position where the inclination angles change from increasing or decreasing to decreasing or increasing, or from constant to increasing or decreasing.Type: GrantFiled: January 11, 2017Date of Patent: August 13, 2019Assignee: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Hideki Ono, Shunsuke Mizumi, Takeshi Kudo, Tatsuhito Hattori