Patents by Inventor Tsuyoshi Miyachi
Tsuyoshi Miyachi 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: 11364467Abstract: Provided is a desulfurization device that allows for the easy and accurate disposition of a spray pipe inside an absorption tower. Provided is a desulfurization device including: an absorption tower (10); and a spray pipe (20) disposed inside the absorption tower (10). The spray pipe (20) includes: a cylindrical pipe portion (21), the leading end of which is closed; and an attachment flange (24) attached to the pipe portion (21). The absorption tower (10) includes: an opening hole (14e) opening toward the side; and a flange (14a) disposed around the opening hole (14e). The attachment flange (24) and the flange (14a) are detachably attached.Type: GrantFiled: September 18, 2018Date of Patent: June 21, 2022Assignee: MITSUBISHI POWER, LTD.Inventors: Satoru Sugita, Tetsu Ushiku, Ryozo Sasaki, Naoyuki Yoshizumi, Tsuyoshi Miyachi, Seiji Kagawa
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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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Publication number: 20200384407Abstract: An object is to provide a spray pipe and a desulfurization apparatus provided with the spray pipe that facilitate determination of abrasion of the spray pipe and determination of necessity of repair and replacement of the spray pipe. The spray pipe according to the present disclosure includes: a tubular strength layer that is configured of :fiber-reinforced plastic; an outer abrasion resistant layer that covers an outer peripheral side of the strength layer; and an inner abrasion resistant layer that covers an inner peripheral side of the strength layer. The outer abrasion resistant layer is a laminated body of a plurality of first abrasion resistant layers, and colors of the plurality of first abrasion resistant layers are different from each other.Type: ApplicationFiled: November 16, 2018Publication date: December 10, 2020Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Ryuji Yoshiyama, Kairi Yamada, Naoyuki Kamiyama, Seiji Kagawa, Tsuyoshi Miyachi, Naoyuki Yoshizumi, Takuro Soeda, Tetsu Ushiku
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Publication number: 20200171425Abstract: 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: ApplicationFiled: July 12, 2018Publication date: June 4, 2020Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Satoru Sugita, Tetsu Ushiku, Ryozo Sasaki, Naoyuki Yoshizumi, Tsuyoshi Miyachi, Seiji Kagawa
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Publication number: 20200094186Abstract: A spray pipe is disclosed, which includes: a pipe portion, having a cylindrical shape, and configured to extend along an axis in the horizontal direction, a distal end portion of the pipe portion being closed; a plurality of nozzle portions configured to guide an absorbing liquid, flowing through the pipe portion in the horizontal direction, upward in a vertical direction, the plurality of nozzle portions being arranged at a plurality of positions on an upper end portion of the pipe portion in the vertical direction; and a leg portion disposed on a lower end portion of the pipe portion in the vertical direction, and having an installation surface along the horizontal direction, wherein the leg portion-is disposed in a state where the installation surface is made to oppositely face a support surface of a pipe support installed on the absorption tower, the support surface extending along the horizontal direction.Type: ApplicationFiled: June 22, 2017Publication date: March 26, 2020Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Satoru Sugita, Tetsu Ushiku, Ryozo Sasaki, Naoyuki Yoshizumi, Tsuyoshi Miyachi, Seiji Kagawa
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Publication number: 20200061533Abstract: Provided is a desulfurization device that allows for the easy and accurate disposition of a spray pipe inside an absorption tower. Provided is a desulfurization device including: an absorption tower (10); and a spray pipe (20) disposed inside the absorption tower (10). The spray pipe (20) includes: a cylindrical pipe portion (21), the leading end of which is closed; and an attachment flange (24) attached to the pipe portion (21). The absorption tower (10) includes: an opening hole (14e) opening toward the side; and a flange (14a) disposed around the opening hole (14e). The attachment flange (24) and the flange (14a) are detachably attached.Type: ApplicationFiled: September 18, 2018Publication date: February 27, 2020Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Satoru Sugita, Tetsu Ushiku, Ryozo Sasaki, Naoyuki Yoshizumi, Tsuyoshi Miyachi, Seiji Kagawa
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Patent number: 10471382Abstract: An air pollution control system includes a denitration device that removes nitrogen oxide in flue gas from a boiler; a heat transfer tube for recovering part of heat of the flue gas after denitration; a precipitator that removes soot and dust in the flue gas after heat recovery; a desulfurization device that removes sulfur oxide in the flue gas discharged from the precipitator; a heat transfer tube for heating the flue gas discharged from the desulfurization device; a circulation pump that circulates a heat medium between the heat transfer tubes; a heat medium heater provided to the circulation pipe to heat the heat medium; and a control device that controls the heat medium heater based on an ammonia concentration at an outlet of the denitration device. The control device causes the heat medium heater to heat the heat medium when the ammonia concentration is higher than a certain value.Type: GrantFiled: February 21, 2017Date of Patent: November 12, 2019Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Tsuyoshi Miyachi, Seiji Kagawa, Naoyuki Kamiyama, Tetsu Ushiku
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Patent number: 10436096Abstract: A heat exchanger includes a heat recovery unit that causes a heat medium to recover heat from flue gas through first heat exchange by bringing the flue gas into contact with a fin tube; a reheater including a preheating unit configured to preheat flue gas through second heat exchange by bringing the flue gas into contact with a tube, and heating units that heat the flue gas through third heat exchange by bringing the flue gas into contact with the heat medium; and a control unit that calculates a recovered heat quantity to be recovered by the heat recovery unit from the flue gas through the first heat exchange, and that controls temperature of the heat medium after the first heat exchange within a predetermined range.Type: GrantFiled: November 4, 2015Date of Patent: October 8, 2019Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Tsuyoshi Miyachi, Seiji Kagawa, Naoyuki Kamiyama, Tetsu Ushiku
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Publication number: 20190099714Abstract: An air pollution control system includes adenitration device that removes nitrogen oxide in flue gas from a boiler; a heat transfer tube for recovering part of heat of the flue gas after denitration; a precipitator that removes soot and dust in the flue gas after heat recovery; a desulfurization device that removes sulfur oxide in the flue gas discharged from the precipitator; a heat transfer tube for heating the flue gas discharged from the desulfurization device; a circulation pump that circulates a heat medium between the heat transfer tubes; a heat medium heater provided to the circulation pipe to heat the heat medium; and a control device that controls the heat medium heater based on an ammonia concentration at an outlet of the denitration device. The control device causes the heat medium heater to heat the heat medium when the ammonia concentration is higher than a certain value.Type: ApplicationFiled: February 21, 2017Publication date: April 4, 2019Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Tsuyoshi Miyachi, Seiji Kagawa, Naoyuki Kamiyama, Tetsu Ushiku
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Patent number: 10139033Abstract: A resin coating layer according to the present invention is formed by curing a thermo-setting resin composition on an inner wall of a heat transfer tube. Forming the resin coating layer allows the heat transfer tube to be easily repaired without involving a cutting process of the heat transfer tube.Type: GrantFiled: February 7, 2013Date of Patent: November 27, 2018Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hideaki Sakurai, Tsuyoshi Miyachi, Seiji Kagawa, Takuya Okamoto
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Patent number: 10024609Abstract: A steel covering layer according to the present invention includes a surface layer formed of a low surface energy material and formed on the surface of a heat transfer tube.Type: GrantFiled: February 7, 2013Date of Patent: July 17, 2018Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hideaki Sakurai, Seiji Kagawa, Tsuyoshi Miyachi, Takuya Okamoto
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Publication number: 20180010504Abstract: A heat exchanger includes a heat recovery unit that causes a heat medium to recover heat from flue gas through first heat exchange by bringing the flue gas into contact with a fin tube; a reheater including a preheating unit configured to preheat flue gas through second heat exchange by bringing the flue gas into contact with a tube, and heating units that heat the flue gas through third heat exchange by bringing the flue gas into contact with the heat medium; and a control unit that calculates a recovered heat quantity to be recovered by the heat recovery unit from the flue gas through the first heat exchange, and that controls temperature of the heat medium after the first heat exchange within a predetermined range.Type: ApplicationFiled: November 4, 2015Publication date: January 11, 2018Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Tsuyoshi Miyachi, Seiji Kagawa, Naoyuki Kamiyama, Tetsu Ushiku
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Patent number: 9714882Abstract: When a liquid level is changed even though an inflow of a heat medium into a specific heat transfer tube bundle is stopped, it is determined that there is no abnormality in the heat transfer tube bundle in which the inflow of the heat medium is stopped and then another heat transfer tube bundle is inspected. Next, when the inflow of the heat medium into the specific heat transfer tube bundle is stopped not to cause the change in the liquid level, it is determined that there is an abnormality in the heat transfer tube bundle to which the inflow of the heat medium is stopped. Thus, it is possible to determine that there is an abnormality in the heat transfer tube bundle in which the inflow of the heat medium is stopped.Type: GrantFiled: November 10, 2011Date of Patent: July 25, 2017Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Naoyuki Kamiyama, Tsuyoshi Miyachi, Takuya Okamoto, Yuichiro Sato
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Publication number: 20150027671Abstract: A steel covering layer according to the present invention includes a surface layer formed of a low surface energy material and formed on the surface of a heat transfer tube.Type: ApplicationFiled: February 7, 2013Publication date: January 29, 2015Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hideaki Sakurai, Seiji Kagawa, Tsuyoshi Miyachi, Takuya Okamoto
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Publication number: 20150024140Abstract: A resin coating layer according to the present invention is formed by curing a thermo-setting resin composition on an inner wall of a heat transfer tube. Forming the resin coating layer allows the heat transfer tube to be easily repaired without involving a cutting process of the heat transfer tube.Type: ApplicationFiled: February 7, 2013Publication date: January 22, 2015Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hideaki Sakurai, Tsuyoshi Miyachi, Seiji Kagawa, Takuya Okamoto
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Publication number: 20130340976Abstract: Dummy tubes are each provided near a gas inlet side and a gas outlet side of a heat recovery unit and near a gas discharge side of a re-heater via an intubation, and a heat medium is circulated in the dummy tube by a branched path which branches from a medium circulation path. The dummy tube is periodically extracted to check the quantity of thickness reduction of the surface thereof. Thus, it is possible to check the quantity of thickness reduction of the surface of the dummy tube, and determine the state of damage or the like of a heat transfer tube.Type: ApplicationFiled: February 13, 2012Publication date: December 26, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Naoyuki Kamiyama, Tsuyoshi Miyachi, Takuya Okamoto, Yuichiro Sato
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Publication number: 20130327128Abstract: When a liquid level is changed even though an inflow of a heat medium into a specific heat transfer tube bundle is stopped, it is determined that there is no abnormality in the heat transfer tube bundle in which the inflow of the heat medium is stopped and then another heat transfer tube bundle is inspected. Next, when the inflow of the heat medium into the specific heat transfer tube bundle is stopped not to cause the change in the liquid level, it is determined that there is an abnormality in the heat transfer tube bundle to which the inflow of the heat medium is stopped. Thus, it is possible to determine that there is an abnormality in the heat transfer tube bundle in which the inflow of the heat medium is stopped.Type: ApplicationFiled: November 10, 2011Publication date: December 12, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Naoyuki Kamiyama, Tsuyoshi Miyachi, Takuya Okamoto, Yuichiro Sato
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Publication number: 20130327510Abstract: A heat exchanger is provided with a heat transfer tube bundle housing duct for housing heat transfer tube bundles, openings provided on a sidewall of the heat transfer tube bundle housing duct, for freely inserting and removing the heat transfer tube bundles, and rails provided in a direction perpendicular to an inflowing direction of a flue gas G within the heat transfer tube bundle housing duct, for freely moving the heat transfer tube bundles. Since the heat exchanger can draw out only a specific heat transfer tube bundle, it is possible to reduce a maintenance period, thereby minimizing a regular inspection period.Type: ApplicationFiled: November 10, 2011Publication date: December 12, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Naoyuki Kamiyama, Tsuyoshi Miyachi, Takuya Okamoto, Yuichiro Sato