Patents by Inventor Kazuya Higashi
Kazuya Higashi 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: 10781026Abstract: To provide a container and a package configured to prevent a deformation of housed metal. According to one aspect of the present invention, there is provided the container. This container includes a cylindrical container body, a lid, and a flat plate-shaped inner plug. The cylindrical container body with a bottom has a sidewall and a bottom wall. The lid has a flat plate portion and a side portion. The flat plate portion covers an opening of the container body. The side portion covers at least a part of an outer peripheral surface of the container body. The flat plate-shaped inner plug is located inside the lid. The container body includes a thread ridge on the outer peripheral surface. The side portion of the lid has a screw groove with two or more threads on its inner peripheral surface. The lid is configured to be screwed with the container body by screwing the screw groove with the thread ridge. A plurality of lock portions are disposed on an outer periphery of the lid.Type: GrantFiled: July 5, 2017Date of Patent: September 22, 2020Assignee: SENJU METAL INDUSTRY CO., LTD.Inventors: Isamu Sato, Takafumi Sano, Naoyuki Motozawa, Kazuya Higashi, Tomofumi Kaneko
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Patent number: 10669941Abstract: A gas turbine cooling system includes: a cooling air line that guides compressed air; a cooler that cools the compressed air; a flow rate adjuster that adjusts the flow rate of the cooling air; and a control device. The control device includes: a load change determination unit that determines whether a load indicated by a load command of the gas turbine has changed; a first command generation section that generates a first command indicating such an operation amount of the flow rate adjuster as allows the flow rate of the cooling air to meet a target flow rate; and a second command generation section that, when it is determined that the load indicated by the load command has changed, generates a second command indicating such an operation amount of the flow rate adjuster as allows a change-adapted flow rate higher than the target flow rate to be met.Type: GrantFiled: December 6, 2016Date of Patent: June 2, 2020Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Satoko Fujii, Tetsuya Yabe, Kazuya Higashi
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Patent number: 10465608Abstract: A temperature control device includes a temperature difference calculation unit that calculates a temperature difference between an inlet and an outlet of a boost compressor on the basis of a pressure ratio of the inlet and the outlet of the boost compressor and an IGV opening degree of the boost compressor, the boost compressor outputting cooling air obtained by cooling compressed air from a compressor to a cooling target; a temperature information calculation unit that calculates temperature information for feedback control for at least one of the inlet and the outlet of the boost compressor on the basis of the temperature difference between the inlet and the outlet of the boost compressor; and a control unit that performs feedback control by using the temperature information for feedback control such that at least one of an inlet temperature and an outlet temperature of the boost compressor approaches a setting value.Type: GrantFiled: October 21, 2014Date of Patent: November 5, 2019Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Akihiko Saito, Takashi Sonoda, Tetsuya Yabe, Satoko Fujii, Kazuya Higashi
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Publication number: 20190300262Abstract: To provide a container and a package configured to prevent a deformation of housed metal. According to one aspect of the present invention, there is provided the container. This container includes a cylindrical container body, a lid, and a flat plate-shaped inner plug. The cylindrical container body with a bottom has a sidewall and a bottom wall. The lid has a flat plate portion and a side portion. The flat plate portion covers an opening of the container body. The side portion covers at least a part of an outer peripheral surface of the container body. The flat plate-shaped inner plug is located inside the lid. The container body includes a thread ridge on the outer peripheral surface. The side portion of the lid has a screw groove with two or more threads on its inner peripheral surface. The lid is configured to be screwed with the container body by screwing the screw groove with the thread ridge. A plurality of lock portions are disposed on an outer periphery of the lid.Type: ApplicationFiled: July 5, 2017Publication date: October 3, 2019Applicant: SENJU METAL INDUSTRY CO., LTD.Inventors: Isamu SATO, Takafumi SANO, Naoyuki MOTOZAWA, Kazuya HIGASHI, Tomofumi KANEKO
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Publication number: 20190003394Abstract: A gas turbine cooling system includes: a cooling air line that guides compressed air compressed by an air compressor to a hot part; a cooler that cools the compressed air in the cooling air line; a return line that returns cooling air in the cooling air line to an upstream side in the cooling air line; a return valve that adjusts the flow rate of the cooling air flowing through the return line; and a control device that controls the degree of opening of the return valve. The control device has a second valve command generation section that, when a reception unit receives a load rejection command, generates as a second valve command a valve command ordering the degree of opening of the return valve to be forcedly increased to a predetermined load rejection-adapted degree of opening.Type: ApplicationFiled: January 11, 2017Publication date: January 3, 2019Inventors: Satoko FUJII, Tetsuya YABE, Kazuya HIGASHI
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Publication number: 20180372000Abstract: A gas turbine cooling system includes: a cooling air line that guides compressed air; a cooler that cools the compressed air; a flow rate adjuster that adjusts the flow rate of the cooling air; and a control device. The control device includes: a load change determination unit that determines whether a load indicated by a load command of the gas turbine has changed; a first command generation section that generates a first command indicating such an operation amount of the flow rate adjuster as allows the flow rate of the cooling air to meet a target flow rate; and a second command generation section that, when it is determined that the load indicated by the load command has changed, generates a second command indicating such an operation amount of the flow rate adjuster as allows a change-adapted flow rate higher than the target flow rate to be met.Type: ApplicationFiled: December 6, 2016Publication date: December 27, 2018Inventors: Satoko FUJII, Tetsuya YABE, Kazuya HIGASHI
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Patent number: 10161317Abstract: A gas turbine drives a power generator by rotating a turbine using combustion gas generated in a combustor as a result of supplying the combustor with fuel and compressed air from a compressor, which is provided with an inlet guide vane at a front stage. An operation control device of the gas turbine enables an IGV priority open flag when the inlet guide vane is not fully open and when the system frequency is lower than or equal to a predetermined threshold value ? or there is a request for increasing the output of the gas turbine. When the IGV priority open flag is enabled, the operation control device sets the degree of opening of the inlet guide vane to be larger than before. Accordingly, the output can be increased without having to increase the turbine inlet temperature, regardless of the operational state of the gas turbine.Type: GrantFiled: February 4, 2015Date of Patent: December 25, 2018Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Takashi Sonoda, Kazuya Higashi, Akihiko Saito
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Patent number: 9976478Abstract: A solar heat turbine system includes: a compressor which compresses a working fluid, and generates a high-pressure working fluid; a solar heat receiver which heats the high-pressure working fluid with solar heat, and which generates a high-temperature working fluid; a turbine which is rotationally driven by the high-temperature working fluid; a restriction mechanism which restricts a flow of at least one of the high-pressure working fluid and the high-temperature working fluid; a rotation interlocking mechanism which rotationally drives the compressor so as to interlock with the turbine; a bleed mechanism which causes the high-pressure working fluid which is in a process of being generated in the compressor to be bled as a bled working fluid; and a system control unit which causes the bleed mechanism to execute bleeding after the restriction mechanism is caused to restrict.Type: GrantFiled: October 10, 2013Date of Patent: May 22, 2018Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Shoichi Harada, Kazuya Higashi, Takashi Sonoda, Keisuke Yamamoto, Yoshifumi Iwasaki, Tatsuya Iwasaki
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Patent number: 9644540Abstract: A collector 3 that collects particles P contained in a fluid includes: a bent pipe 31 that guides the fluid flowing from a first direction X in a second direction Z; a branch pipe 32 that causes the fluid guided in the second direction Z to branch into the second direction Z and a third direction Y; a collection pipe 34 in which the particles P in the fluid guided in the second direction Z by the branch pipe 32 are collected; and a reduction-expansion pipe 33 which is arranged between the bent pipe 31 and the branch pipe 32 and of which the flow path is narrowed while being biased to an inlet side of the bent pipe 31.Type: GrantFiled: May 23, 2013Date of Patent: May 9, 2017Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Akinori Yamaguchi, Kazuya Higashi, Kiyonori Kushioka
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Publication number: 20170002748Abstract: A gas turbine drives a power generator by rotating a turbine using combustion gas generated in a combustor as a result of supplying the combustor with fuel and compressed air from a compressor, which is provided with an inlet guide vane at a front stage. An operation control device of the gas turbine enables an IGV priority open flag when the inlet guide vane is not fully open and when the system frequency is lower than or equal to a predetermined threshold value a or there is a request for increasing the output of the gas turbine. When the IGV priority open flag is enabled, the operation control device sets the degree of opening of the inlet guide vane to be larger than before. Accordingly, the output can be increased without having to increase the turbine inlet temperature, regardless of the operational state of the gas turbine.Type: ApplicationFiled: February 4, 2015Publication date: January 5, 2017Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Takashi SONODA, Kazuya HIGASHI, Akihiko SAITO
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Patent number: 9482210Abstract: A solar thermal power generation facility is provided with turbine bypass piping (74) which makes some of compressed air from a compressor (10) bypass a turbine (20), a turbine bypass valve (75) which adjusts the flow rate of the compressed air flowing through the turbine bypass piping (74), and a control device (80) which controls the rotational torque of a turbine rotor (21) by opening the turbine bypass valve (75) before a rotor rotational speed reaches a rated rotational speed in a speeding-up process of the rotor rotational speed by a start-up device (60) and adjusting the flow rate of the compressed air that is made to bypass, by the turbine bypass valve (75). The control device (80) instantaneously fully closes the turbine bypass valve (75) at the time of incorporation in which a power generator (50) is connected to an electric power system (S).Type: GrantFiled: March 18, 2013Date of Patent: November 1, 2016Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Shoichi Harada, Kazuya Higashi, Takashi Sonoda, Keisuke Yamamoto, Yoshifumi Iwasaki, Tatsuya Iwasaki, Sumio Toyofuku, Kazuma Nishizawa
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Publication number: 20160237910Abstract: A temperature control device includes a temperature difference calculation unit that calculates a temperature difference between an inlet and an outlet of a boost compressor on the basis of a pressure ratio of the inlet and the outlet of the boost compressor and an IGV opening degree of the boost compressor, the boost compressor outputting cooling air obtained by cooling compressed air from a compressor to a cooling target; a temperature information calculation unit that calculates temperature information for feedback control for at least one of the inlet and the outlet of the boost compressor on the basis of the temperature difference between the inlet and the outlet of the boost compressor; and a control unit that performs feedback control by using the temperature information for feedback control such that at least one of an inlet temperature and an outlet temperature of the boost compressor approaches a setting value.Type: ApplicationFiled: October 21, 2014Publication date: August 18, 2016Inventors: Akihiko Saito, Takashi Sonoda, Tetsuya Yabe, Satoko Fujii, Kazuya Higashi
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Publication number: 20160222882Abstract: A solar heat turbine system includes: a compressor which compresses a working fluid, and generates a high-pressure working fluid; a solar heat receiver which heats the high-pressure working fluid with solar heat, and which generates a high-temperature working fluid; a turbine which is rotationally driven by the high-temperature working fluid; a restriction mechanism which restricts a flow of at least one of the high-pressure working fluid and the high-temperature working fluid; a rotation interlocking mechanism which rotationally drives the compressor so as to interlock with the turbine; a bleed mechanism which causes the high-pressure working fluid which is in a process of being generated in the compressor to be bled as a bled working fluid; and a system control unit which causes the bleed mechanism to execute bleeding after the restriction mechanism is caused to restrict.Type: ApplicationFiled: October 10, 2013Publication date: August 4, 2016Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Shoichi Harada, Kazuya Higashi, Takashi Sonoda, Keisuke Yamamoto, Yoshifumi Iwasaki, Tatsuya Iwasaki
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Patent number: 9347377Abstract: The invention provides a gas-turbine fuel nozzle that includes a plurality of fuel supply channels to which fuel is supplied, a plurality of fuel/sweep-fluid supply channels to which fuel or a sweep fluid for sweeping the fuel is supplied, and a plurality of injection holes that are provided at downstream ends of the fuel supply channels or the fuel/sweep-fluid supply channels and that inject the fuel guided from the fuel supply channels or the fuel/sweep-fluid supply channels; a sweep-fluid supply channel that is connected to the fuel/sweep-fluid supply channels to guide the sweeping; and sweep-fluid cooling means for cooling the sweep-fluid to a temperature lower than a self-ignition temperature of the fuel.Type: GrantFiled: October 27, 2011Date of Patent: May 24, 2016Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Masayuki Murakami, Kazuya Higashi, Yukimasa Nakamoto, Satoko Fujii, Takeyuki Shimizu, Keigo Matsumoto
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Publication number: 20150211417Abstract: A collector 3 that collects particles P contained in a fluid includes: a bent pipe 31 that guides the fluid flowing from a first direction X in a second direction Z; a branch pipe 32 that causes the fluid guided in the second direction Z to branch into the second direction Z and a third direction Y; a collection pipe 34 in which the particles P in the fluid guided in the second direction Z by the branch pipe 32 are collected; and a reduction-expansion pipe 33 which is arranged between the bent pipe 31 and the branch pipe 32 and of which the flow path is narrowed while being biased to an inlet side of the bent pipe 31.Type: ApplicationFiled: May 23, 2013Publication date: July 30, 2015Inventors: Akinori Yamaguchi, Kazuya Higashi, Kiyonori Kushioka
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Publication number: 20140360188Abstract: A solar thermal power generation facility is provided with turbine bypass piping (74) which makes some of compressed air from a compressor (10) bypass a turbine (20), a turbine bypass valve (75) which adjusts the flow rate of the compressed air flowing through the turbine bypass piping (74), and a control device (80) which controls the rotational torque of a turbine rotor (21) by opening the turbine bypass valve (75) before a rotor rotational speed reaches a rated rotational speed in a speeding-up process of the rotor rotational speed by a start-up device (60) and adjusting the flow rate of the compressed air that is made to bypass, by the turbine bypass valve (75). The control device (80) instantaneously fully closes the turbine bypass valve (75) at the time of incorporation in which a power generator (50) is connected to an electric power system (S).Type: ApplicationFiled: March 18, 2013Publication date: December 11, 2014Inventors: Shoichi Harada, Kazuya Higashi, Takashi Sonoda, Keisuke Yamamoto, Yoshifumi Iwasaki, Tatsuya Iwasaki, Sumio Toyofuku, Kazuma Nishizawa
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Publication number: 20130091824Abstract: The invention provides a gas-turbine fuel nozzle (1) that includes a plurality of fuel supply channels (3a) to which fuel is supplied, a plurality of fuel/scavenging-fluid supply channels (3b) to which fuel or a scavenging fluid for scavenging the fuel is supplied, and a plurality of injection holes (7a, 7b) that are provided at downstream ends of the fuel supply channels (3a) or the fuel/scavenging-fluid supply channels (3b) and that inject the fuel guided from the fuel supply channels (3a) or the fuel/scavenging-fluid supply channels (3b); a scavenging-fluid supply channel (21) that is connected to the fuel/scavenging-fluid supply channels (3b) to guide the scavenging fluid; and scavenging-fluid cooling means (23) for cooling the scavenging fluid to a temperature lower than a self-ignition temperature of the fuel.Type: ApplicationFiled: October 27, 2011Publication date: April 18, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Masayuki Murakami, Kazuya Higashi, Yukimasa Nakamoto, Satoko Fujii, Takeyuki Shimizu, Keigo Matsumoto
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Patent number: 6698182Abstract: In the gas turbine combined plant, water fed to an entrance of a high-pressure economizer is guided into an air cooler as a cooling medium of high-temperature air that passes through the air cooler. High-temperature water obtained by heat exchanging with high-temperature air is branched to a passage that joins water drawn from an exit of the high-pressure economizer and a passage that joins a condenser. These passages are provided with regulating valves that regulate the flow rate of the water that passes through these passages, respectively.Type: GrantFiled: April 8, 2002Date of Patent: March 2, 2004Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Takashi Sonoda, Kazuya Higashi, Tomoka Tanaka, Kunifumi Yamasaki
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Patent number: 6588197Abstract: The temperature and flow rate of steam introduced to a gas turbine and a combustor is controlled properly through mixing intermediate-pressure steam and high-pressure steam. Thus, two different requirements, i.e., adjustment of steam temperature and securing of a sufficient steam flow rate, can be satisfied simultaneously. As a result, it becomes possible to simultaneously achieve control of the clearance of the blade ring of the gas turbine by means of steam and cooling of the combustor by means of steam.Type: GrantFiled: April 17, 2001Date of Patent: July 8, 2003Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Tomoka Tanaka, Shouichi Nagata, Kazuya Higashi, Koji Hiramoto
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Publication number: 20020144505Abstract: In the gas turbine combined plant, water fed to an entrance of a high-pressure economizer is guided into an air cooler as a cooling medium of high-temperature air that passes through the air cooler. High-temperature water obtained by heat exchanging with high-temperature air is branched to a passage that joins water drawn from an exit of the high-pressure economizer and a passage that joins a condenser. These passages are provided with regulating valves that regulate the flow rate of the water that passes through these passages, respectively.Type: ApplicationFiled: April 8, 2002Publication date: October 10, 2002Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Takashi Sonoda, Kazuya Higashi, Tomoka Tanaka, Kunifumi Yamasaki