Patents by Inventor Tomomi Okuyama
Tomomi Okuyama 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: 11499445Abstract: The invention provides a CO2 turbine power generation system that can be easily prevented from reaching an overspeed condition. A CO2 turbine power generation system of an embodiment includes a CO2 medium shutoff valve installed in a medium flow path between a regenerative heat exchanger and a combustor. When load rejection is to be performed, the CO2 medium shutoff valve closes to shut off the supply of the medium from the regenerative heat exchanger to the combustor.Type: GrantFiled: June 1, 2021Date of Patent: November 15, 2022Assignee: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Takahiro Ono, Takahiro Yamamoto, Koki Nishimura, Tomomi Okuyama, Tsuguhisa Tashima, Shogo Iwai
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Patent number: 11441488Abstract: Shaft stability is enhanced and reliability is improved. In a gas turbine power generation system of an embodiment, a pressurizing unit, a rotation control unit, a diaphragm coupling, a turbine, and a generator are disposed to line up sequentially on the same shaft. A thrust bearing is provided between the turbine and the generator. The turbine is configured such that a working medium flows from the diaphragm coupling side toward the rotation control unit side.Type: GrantFiled: January 6, 2021Date of Patent: September 13, 2022Assignee: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Takahiro Ono, Tsuguhisa Tashima, Shogo Iwai, Hideyuki Maeda, Tomomi Okuyama, Koki Nishimura
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Publication number: 20210381391Abstract: The invention provides a CO2 turbine power generation system that can be easily prevented from reaching an overspeed condition. A CO2 turbine power generation system of an embodiment includes a CO2 medium shutoff valve installed in a medium flow path between a regenerative heat exchanger and a combustor. When load rejection is to be performed, the CO2 medium shutoff valve closes to shut off the supply of the medium from the regenerative heat exchanger to the combustor.Type: ApplicationFiled: June 1, 2021Publication date: December 9, 2021Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Takahiro ONO, Takahiro YAMAMOTO, Koki NISHIMURA, Tomomi OKUYAMA, Tsuguhisa TASHIMA, Shogo IWAI
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Publication number: 20210262361Abstract: There is provided a turbine in which a sufficient measure against windage loss can be executed. In a turbine of an embodiment, a cooling medium higher in pressure and lower in temperature than a working medium is introduced to the inside from the outside of a turbine casing. Here, in at least a turbine stage of an exhaust stage, the cooling medium passes through a stator blade and thereafter passes through a flow path present between rotor blades and a rotor wheel to flow to an exhaust-stage wheel space.Type: ApplicationFiled: February 8, 2021Publication date: August 26, 2021Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Tsuguhisa TASHIMA, Takahiro ONO, Shogo IWAI, Daisuke NOMURA, Norikazu TAKAGI, Tomomi OKUYAMA, Koki NISHIMURA
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Publication number: 20210215046Abstract: According to an embodiment, a turbine comprises: a casing; a rotor shaft; turbine stages; a thrust bearing which receives thrust load in the axial direction generated by a flow of a working fluid supplied to the turbine stages; a balance piston which is formed on the rotor shaft along a circumferential direction and projects in a radial direction from the rotor shaft, for adjusting a thrust contact pressure; and a thrust load adjusting mechanism which applies pressures of a pressure-increasing side and a pressure-decreasing side to at least one of a balance piston inner-side chamber and a balance piston outer-side chamber which sandwich the balance piston in the axial direction.Type: ApplicationFiled: December 7, 2020Publication date: July 15, 2021Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Tsuguhisa TASHIMA, Takahiro ONO, Shogo IWAI, Tomomi OKUYAMA, Hideyuki MAEDA, Koki NISHIMURA
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Publication number: 20210215102Abstract: Shaft stability is enhanced and reliability is improved. In a gas turbine power generation system of an embodiment, a pressurizing unit, a rotation control unit, a diaphragm coupling, a turbine, and a generator are disposed to line up sequentially on the same shaft. A thrust bearing is provided between the turbine and the generator. The turbine is configured such that a working medium flows from the diaphragm coupling side toward the rotation control unit side.Type: ApplicationFiled: January 6, 2021Publication date: July 15, 2021Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Takahiro ONO, Tsuguhisa TASHIMA, Shogo IWAI, Hideyuki MAEDA, Tomomi OKUYAMA, Koki NISHIMURA
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Patent number: 10814717Abstract: An air guiding unit has a shroud having a vent hole, an air guiding duct, and a valve housed in the air guiding duct. A radiator, an engine cooling heat exchanger, and a blower are fixed to the shroud. The shroud guides an air flowing into an engine room from an engine room opening and passing through the radiator and the engine cooling heat exchanger. The air guiding duct has a first opening, which is connected to the vent hole of the shroud, and a second opening, which is open in the engine room toward a rear space defined on a rear side of the engine. The air guiding duct therein has a duct interior channel through which the air flows between the first opening and the second opening. The valve is configured to increase and decrease an opening degree of the duct interior channel.Type: GrantFiled: July 7, 2016Date of Patent: October 27, 2020Assignee: DENSO CORPORATIONInventors: Shingo Okugawa, Ken Mutou, Akihiro Maeda, Tomomi Okuyama
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Publication number: 20180264932Abstract: An air guiding unit has a shroud having a vent hole, an air guiding duct, and a valve housed in the air guiding duct. A radiator, an engine cooling heat exchanger, and a blower are fixed to the shroud. The shroud guides an air flowing into an engine room from an engine room opening and passing through the radiator and the engine cooling heat exchanger. The air guiding duct has a first opening, which is connected to the vent hole of the shroud, and a second opening, which is open in the engine room toward a rear space defined on a rear side of the engine. The air guiding duct therein has a duct interior channel through which the air flows between the first opening and the second opening. The valve is configured to increase and decrease an opening degree of the duct interior channel.Type: ApplicationFiled: July 7, 2016Publication date: September 20, 2018Applicant: DENSO CORPORATIONInventors: Shingo OKUGAWA, Ken MUTOU, Akihiro MAEDA, Tomomi OKUYAMA
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Publication number: 20110168364Abstract: In a heat exchanger with a plurality of tubes, a header tank includes a core plate bonded to the tubes, a tank body fixed to the core plate, and an elastic member arranged between a bottom portion of a groove portion provided at an outer peripheral portion of the core plate and a tip end portion of the tank body to be elastically deformable therebetween. The elastic member is provided with a position determination portion which protrudes approximately in parallel with an inner bottom surface of the bottom portion of the groove portion. Furthermore, the position determination portion is configured in the elastic member to have a clearance between the position determination portion and the bottom surface of the bottom portion of the groove portion, and a clearance between the position determination portion and the tip end portion of the tank body.Type: ApplicationFiled: January 12, 2011Publication date: July 14, 2011Applicant: DENSO CORPORATIONInventors: Tomomi Okuyama, Hiroshi Tanaka, Sumio Susa, Mitsuharu Inagaki, Hironobu Fujiyoshi, Ryuji Shirakawa