Patents by Inventor Juichi KODERA
Juichi KODERA 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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Patent number: 12235246Abstract: Provided is a measuring device for measuring the hardness of a rotor blade groove. This measuring device comprises: a hardness meter for measuring hardness; an actuator that presses the hardness meter to an object to be measured; a camera for capturing an image of a measurement range in the object to be measured by the hardness meter; a movement mechanism for moving the hardness meter and the camera to a desired position within the measurement range; and a fixing member for fixing the movement mechanism to the object to be measured.Type: GrantFiled: September 14, 2022Date of Patent: February 25, 2025Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yasutaka Fuke, Hirone Komatsu, Yuichi Sekine, Hideo Yoda, Juichi Kodera, Eiji Saito, Shinichi Kobayashi
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Patent number: 12071859Abstract: 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: GrantFiled: December 4, 2020Date of Patent: August 27, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Satoshi Kumagai, Shunsuke Mizumi, Koji Ishibashi, Juichi Kodera
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Patent number: 12044629Abstract: 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: GrantFiled: September 2, 2022Date of Patent: July 23, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Shunsuke Mizumi, Jose Carlos Kuroki Ramirez, Koji Ishibashi, Juichi Kodera, Satoshi Kumagai, Masaru Sekihara
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Patent number: 11828185Abstract: 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: GrantFiled: May 28, 2020Date of Patent: November 28, 2023Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Shunsuke Mizumi, Ketsu Ko, Juichi Kodera, Masayuki Kayahara
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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: 20230003627Abstract: Provided is a measuring device for measuring the hardness of a rotor blade groove. This measuring device comprises: a hardness meter for measuring hardness; an actuator that presses the hardness meter to an object to be measured; a camera for capturing an image of a measurement range in the object to be measured by the hardness meter; a movement mechanism for moving the hardness meter and the camera to a desired position within the measurement range; and a fixing member for fixing the movement mechanism to the object to be measured.Type: ApplicationFiled: September 14, 2022Publication date: January 5, 2023Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yasutaka Fuke, Hirone Komatsu, Yuichi Sekine, Hideo Yoda, Juichi Kodera, Eiji Saito, Shinichi Kobayashi
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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: 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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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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Publication number: 20190107007Abstract: 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: ApplicationFiled: October 3, 2018Publication date: April 11, 2019Inventors: Kenji YASHIRODAI, Shunsuke MIZUMI, Koji ISHIBASHI, Jie HUANG, Juichi KODERA
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Publication number: 20180307205Abstract: 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: ApplicationFiled: April 19, 2018Publication date: October 25, 2018Inventors: Kenji YASHIRODAI, Juichi KODERA, Shunsuke MIZUMI, Koji ISHIBASHI
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Publication number: 20180142571Abstract: 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: ApplicationFiled: November 21, 2017Publication date: May 24, 2018Inventors: Shunsuke MIZUMI, Juichi KODERA, Koji ISHIBASHI