Patents by Inventor Kuniyoshi Tsubouchi
Kuniyoshi Tsubouchi 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: 8397510Abstract: A combustor for a gas turbine capable of performing stable combustion even by using high temperature air, comprising a first burner (5) jetting fuel and air into a combustion chamber (2) and a second burner (8) causing the circulating jet of the fuel and air installed at a position corresponding to the tip part of a flame caused by the first burner (5).Type: GrantFiled: December 16, 2003Date of Patent: March 19, 2013Assignee: Hitachi, Ltd.Inventors: Satoshi Dodo, Susumu Nakano, Kuniyoshi Tsubouchi, Shohei Yoshida, Yoshitaka Hirata
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Patent number: 7958717Abstract: A gas turbine power generator plant, intended to reduce its noise by making small the intake and exhaust outlets of the cooing air channel of a case, comprises an engine core in which a turbine, a compressor and a generator are installed on the same axis, a combustor for burning air for combustion compressed by the compressor and supplying the air to the turbine, a radiator for cooling a coolant or a lubricant, a cooling fan for ventilating the radiator with cooling air, an electric power converter for converting electric power generated by the generator, and the case for housing these constituent elements. And, a combustion air channel passing the compressor, the combustor and the turbine and a cooling air channel passing the radiator, the cooling fan and the electric power converter are formed as mutually independent channels from intake to exhaust.Type: GrantFiled: June 9, 2008Date of Patent: June 14, 2011Assignee: Hitachi, Ltd.Inventors: Susumu Nakano, Masaya Ichinose, Masanori Watanabe, Kuniyoshi Tsubouchi, Toshihiko Fukushima, Masatoshi Watanabe
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Patent number: 7730713Abstract: Provided is a gas turbine power plant in which a rotor of a generator is journalled by water lubrication bearings into which a part of cooling water for cooling the generator is fed. Since the lubrication water has a viscosity lower than that of lubrication oil, it is possible to provide a gas turbine power plant with less energy loss resulting in lower power consumption for accessories, and in high power generation efficiency.Type: GrantFiled: July 23, 2004Date of Patent: June 8, 2010Assignee: Hitachi, Ltd.Inventors: Susumu Nakano, Satoshi Dodo, Kuniyoshi Tsubouchi, Manabu Yagi, Itsurou Sawada, Tomoaki Inoue, Makoto Hemmi
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Patent number: 7654094Abstract: A turbine nozzle (2) that, among components constructing a turbine, reaches particularly high temperature is efficiently cooled with a relatively simple structure. A double casing structure in which a turbine casing (7) is provided outside a turbine shell (5) is formed. The turbine casing (7) functions as a flow path (24) for compressed air (20?21) before combustion. The turbine shell (5) covers a turbine nozzle (2) and a radial turbine impeller (3) and forms flow paths (15, 16) for combustion gas (10?11?12?13). The compressed air (21) before combustion flowing in the flow path (24), for compressed air, having air-tightness between itself and the outside air is blown to the turbine nozzle (2) through a through-hole (51) penetrating both wall surfaces of the turbine shell (5) so that the turbine nozzle (2) is evenly cooled and the compressed air used to cool the turbine nozzle is made to flow toward the turbine impeller (3).Type: GrantFiled: March 9, 2004Date of Patent: February 2, 2010Assignee: Hitachi, Ltd.Inventors: Manabu Yagi, Kuniyoshi Tsubouchi, Tadaharu Kishibe, Susumu Nakano, Satoshi Dodo
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Publication number: 20090077943Abstract: Provided is a gas turbine power plant in which a rotor of a generator is journalled by water lubrication bearings into which a part of cooling water for cooling the generator is fed. Since the lubrication water has a viscosity lower than that of lubrication oil, it is possible to provide a gas turbine power plant with less energy loss resulting in lower power consumption for accessories, and in high power generation efficiency.Type: ApplicationFiled: August 13, 2008Publication date: March 26, 2009Inventors: Susumu Nakano, Satoshi Dodo, Kuniyoshi Tsubouchi, Manabu Yagi, Itsurou Sawada, Tomoaki Inoue, Makoto Hemmi
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Publication number: 20090044536Abstract: A gas turbine power generator plant, intended to reduce its noise by making small the intake and exhaust outlets of the cooing air channel of a case, comprises an engine core in which a turbine, a compressor and a generator are installed on the same axis, a combustor for burning air for combustion compressed by the compressor and supplying the air to the turbine, a radiator for cooling a coolant or a lubricant, a cooling fan for ventilating the radiator with cooling air, an electric power converter for converting electric power generated by the generator, and the case for housing these constituent elements. And, a combustion air channel passing the compressor, the combustor and the turbine and a cooling air channel passing the radiator, the cooling fan and the electric power converter are formed as mutually independent channels from intake to exhaust.Type: ApplicationFiled: June 9, 2008Publication date: February 19, 2009Inventors: Susumu Nakano, Masaya Ichinose, Masanori Watanabe, Kuniyoshi Tsubouchi, Toshihiko Fukushima, Masatoshi Watanabe
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Patent number: 7409832Abstract: A gas turbine power generator plant, intended to reduce its noise by making small the intake and exhaust outlets of the cooing air channel of a case, comprises an engine core in which a turbine, a compressor and a generator are installed on the same axis, a combustor for burning air for combustion compressed by the compressor and supplying the air to the turbine, a radiator for cooling a coolant or a lubricant, a cooling fan for ventilating the radiator with cooling air, an electric power converter for converting electric power generated by the generator, and the case for housing these constituent elements. And, a combustion air channel passing the compressor, the combustor and the turbine and a cooling air channel passing the radiator, the cooling fan and the electric power converter are formed as mutually independent channels from intake to exhaust.Type: GrantFiled: January 14, 2005Date of Patent: August 12, 2008Assignee: Hitachi, Ltd.Inventors: Susumu Nakano, Masaya Ichinose, Masanori Watanabe, Kuniyoshi Tsubouchi, Toshihiko Fukushima, Masatoshi Watanabe
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Publication number: 20080092515Abstract: A turbine nozzle (2) that, among components constructing a turbine, reaches particularly high temperature is efficiently cooled with a relatively simple structure. A double casing structure in which a turbine casing (7) is provided outside a turbine shell (5) is formed. The turbine casing (7) functions as a flow path (24) for compressed air (20?21) before combustion. The turbine shell (5) covers a turbine nozzle (2) and a radial turbine impeller (3) and forms flow paths (15, 16) for combustion gas (10?11?12?13). The compressed air (21) before combustion flowing in the flow path (24), for compressed air, having air-tightness between itself and the outside air is blown to the turbine nozzle (2) through a through-hole (51) penetrating both wall surfaces of the turbine shell (5). By this, the turbine nozzle (2) is cooled and the compressed air used to cool the turbine nozzle is made to flow toward the turbine impeller (3).Type: ApplicationFiled: March 9, 2004Publication date: April 24, 2008Inventors: Manabu Yagi, Kuniyoshi Tsubouchi, Tadaharu Kishibe, Susumu Nakano, Satoshi Dodo
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Publication number: 20070256416Abstract: A combustor for a gas turbine capable of performing stable combustion even by using high temperature air, comprising a first burner (5) jetting fuel and air into a combustion chamber (2) and a second burner (8) causing the circulating jet of the fuel and air installed at a position corresponding to the tip part of a flame caused by the first burner (5).Type: ApplicationFiled: December 16, 2003Publication date: November 8, 2007Inventors: Satoshi Dodo, Susumu Nakano, Kuniyoshi Tsubouchi, Shohei Yoshida, Yoshitaka Hirata
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Patent number: 6981360Abstract: An object of the present invention is to provide a gas turbine power generator capable of increasing the power generation efficiency in partial load operation and decreasing a variation in the number of rotations caused by a variation in power generation load. The gas turbine power generator comprises a compressor (2) for compressing air, a combustor (5) for burning the compressed air and fuel, a turbine (6) driven by combustion gas produced in the combustor and driving the compressor (2) and a generator (7), a regenerative heat exchanger (4) for exchanging heat between exhaust gas from the turbine and the compressed air led into the combustor, an intake air sprayer (1), and a humidifier (3). Intake air flown into the regenerative heat exchanger (4) is humidified and cooled by the intake air sprayer (1) and the humidifier (3).Type: GrantFiled: April 9, 2001Date of Patent: January 3, 2006Assignee: Hitachi, Ltd.Inventors: Manabu Yagi, Satoshi Dodo, Kuniyoshi Tsubouchi, Yasuaki Akatsu, Hiroshi Arita, Norio Yasugahira
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Publication number: 20050160740Abstract: A gas turbine power generator plant, intended to reduce its noise by making small the intake and exhaust outlets of the cooing air channel of a case, comprises an engine core in which a turbine, a compressor and a generator are installed on the same axis, a combustor for burning air for combustion compressed by the compressor and supplying the air to the turbine, a radiator for cooling a coolant or a lubricant, a cooling fan for ventilating the radiator with cooling air, an electric power converter for converting electric power generated by the generator, and the case for housing these constituent elements. And, a combustion air channel passing the compressor, the combustor and the turbine and a cooling air channel passing the radiator, the cooling fan and the electric power converter are formed as mutually independent channels from intake to exhaust.Type: ApplicationFiled: January 14, 2005Publication date: July 28, 2005Inventors: Susumu Nakano, Masaya Ichinose, Masanori Watanabe, Kuniyoshi Tsubouchi, Toshihiko Fukushima, Masatoshi Watanabe
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Publication number: 20050039433Abstract: Provided is a gas turbine power plant in which a rotor of a generator is journalled by water lubrication bearings into which a part of cooling water for cooling the generator is fed. Since the lubrication water has a viscosity lower than that of lubrication oil, it is possible to provide a gas turbine power plant with less energy loss resulting in lower power consumption for accessories, and in high power generation efficiency.Type: ApplicationFiled: July 23, 2004Publication date: February 24, 2005Inventors: Susumu Nakano, Satoshi Dodo, Kuniyoshi Tsubouchi, Manabu Yagi, Itsurou Sawada, Tomoaki Inoue, Makoto Hemmi
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Patent number: 6769266Abstract: A heat and electric power supply system includes a regenerative gas turbine and an adsorption refrigerator recovering exhaust heat of exhaust gas from the gas turbine and is provided with inlet air cooling equipment including a spray device for spraying cold water from the adsorption refrigerator into an air-intake port of the regenerative gas turbine and a humidifier effecting humidification by hot water injection from the refrigerator into a compressor delivery port of the regenerative gas turbine. The cooling by cold water and humidification by hot water injection are effected according to operational conditions.Type: GrantFiled: September 20, 2002Date of Patent: August 3, 2004Assignee: Hitachi, Ltd.Inventors: Satoshi Dodo, Kuniyoshi Tsubouchi, Norio Yasugahira, Hiroshi Arita, Yasuaki Akatsu, Shigeo Hatamiya
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Publication number: 20040112037Abstract: An object of the present invention is to provide a gas turbine power generator capable of increasing the power generation efficiency in partial load operation and decreasing a variation in the number of rotations caused by a variation in power generation load. The gas turbine power generator comprises a compressor (2) for compressing air, a combustor (5) for burning the compressed air and fuel, a turbine (6) driven by combustion gas produced in the combustor and driving the compressor (2) and a generator (7), a regenerative heat exchanger (4) for exchanging heat between exhaust gas from the turbine and the compressed air led into the combustor, an intake air sprayer (1), and a humidifier (3). Intake air flown into the regenerative heat exchanger (4) is humidified and cooled by the intake air sprayer (1) and the humidifier (3).Type: ApplicationFiled: February 12, 2004Publication date: June 17, 2004Inventors: Manabu Yagi, Satoshi Dodo, Kuniyoshi Tsubouchi, Yasuaki Akatsu, Hiroshi Arita, Norio Yasugahira
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Publication number: 20030019229Abstract: A heat and electric power supply system which comprises a regenerative gas turbine and an adsorption refrigerator recovering exhaust heat of exhaust gas from the gas turbine is provided with an inlet air cooling equipment including a spray device for spraying cold water form the adsorption refrigerator into an air-intake port of the regenerative gas turbine and a humidifier effecting humidification by hot water injection from the refirigerator into a compressor delivery port of the regenerative gas turbine. The cooling by cold water and humidification by hot water injection are effected according to operational conditions.Type: ApplicationFiled: September 20, 2002Publication date: January 30, 2003Applicant: Hitachi, Ltd.Inventors: Satoshi Dodo, Kuniyoshi Tsubouchi, Norio Yasugahira, Hiroshi Arita, Yasuaki Akatsu, Shigeo Hatamiya
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Patent number: 6477852Abstract: A heat and electric power supply system includes a regenerative gas turbine and an adsorption refrigerator recovering exhaust heat of exhaust gas from the gas turbine and is provided with inlet air cooling equipment including a spray device for spraying cold water from the adsorption refrigerator into an air-intake port of the regenerative gas turbine and a humidifier effecting humidification by hot water injection from the refrigerator into a compressor delivery port of the regenerative gas turbine. The cooling by cold water and humidification by hot water injection are effected according to operational conditions.Type: GrantFiled: March 6, 2001Date of Patent: November 12, 2002Assignee: Hitachi, Ltd.Inventors: Satoshi Dodo, Kuniyoshi Tsubouchi, Norio Yasugahira, Hiroshi Arita, Yasuaki Akatsu, Shigeo Hatamiya
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Publication number: 20010042381Abstract: A heat and electric power supply system which comprises a regenerative gas turbine and an adsorption refrigerator recovering exhaust heat of exhaust gas from the gas turbine is provided with an inlet air cooling equipment including a spray device for spraying cold water form the adsorption refrigerator into an air-intake port of the regenerative gas turbine and a humidifier effecting humidification by hot water injection from the refirigerator into a compressor delivery port of the regenerative gas turbine. The cooling by cold water and humidification by hot water injection are effected according to operational conditions.Type: ApplicationFiled: March 6, 2001Publication date: November 22, 2001Inventors: Satoshi Dodo, Kuniyoshi Tsubouchi, Norio Yasugahira, Hiroshi Arita, Yasuaki Akatsu, Shigeo Hatamiya
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Patent number: 5238547Abstract: A gas-liquid separation method for electroconductive gas-liquid two phase flow and the device therefor wherein electrodes are disposed in the vicinity of inlet and outlet portions of the gas-liquid separation region in the flow passage of electroconductive gas-liquid two phase flow so as to flow an electric current thereto. A magnet is disposed in the gas-liquid separation region of the flow passage so as to generate a magnetic field perpendicular to the current and to generate an electromagnetic force acting along the flow passage wall on the electroconductive liquid by taking advantage of the Flemming's left hand law, thereby separating the electroconductive gas-liquid two phase flow into gas phase and liquid phase. A hydrophobic porous material having water permeability is employed as the flow passage wall in the gas-liquid separation region; the gas-liquid separation region is disposed in a reduced pressure region; and the separated gas phase is effectively removed out of the flow passage.Type: GrantFiled: December 22, 1989Date of Patent: August 24, 1993Assignee: Hitachi, Ltd.Inventors: Kuniyoshi Tsubouchi, Tsutomu Okusawa, Nobuo Hamano
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Patent number: 5101848Abstract: Method of opening and closing a fluid passage comprises the steps of freezing fluid in the fluid passage by first cooling the fluid to a temperature below the freezing point of the fluid to close the fluid passage and after the fluid passage is closed, raising the temperature of the fluid close (or just below) to the freezing point of the fluid, whereby the fluid passage is maintained in a closed state with a small power supply and the responsiveness in opening the fluid passage is enhanced.Type: GrantFiled: March 11, 1991Date of Patent: April 7, 1992Assignee: Hitachi, Ltd.Inventors: Yoshio Kojima, Tsutomu Okusawa, Kuniyoshi Tsubouchi, Yoichi Yoshinaga, Yusuke Takagi, Kenji Mitani, Nobuo Hamano
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Patent number: 4875170Abstract: The life expectancy of a mechanical structure that undergoes repeated loading is estimated by determining the maximum crack length on the surface of the structure. The maximum length of the cracks on the surface of the structure is related to the life ratio of the structure, wherein the life ratio is a ratio of the number of loads the structure has undergone to the number of loads the structure will undergo until failure. An optical system is used to measure the crack length of the cracks on the surface of the structure being inspected. A statistical distribution of greatest length cracks for a sampling of areas within a larger area can be made. Apparatus is provided to statistically process such distribution data to obtain a statistically estimated maximum length crack for the larger area. The maximum crack length determination can be used to estimate the life expectancy of the structure from the relationship between crack length and life ratio.Type: GrantFiled: May 31, 1988Date of Patent: October 17, 1989Assignee: Hitachi, Ltd.Inventors: Shigeo Sakurai, Sadao Umezawa, Saburo Usami, Hiroshi Miyata, Hajime Toriya, Kuniyoshi Tsubouchi, Ryoichi Kaneko