Patents by Inventor Nobuhiro Seiki
Nobuhiro Seiki 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: 7320175Abstract: The invention provides a production process of a gas turbine capable of being applied to various cycles. A principal part of a gas turbine is set in advance based on roughly set conditions, and the number of stages of a compressor and the number of stages of a turbine, which can provide conditions suitable for a desired cycle, are set based on the set principal part. The compressor and the turbine each having the set number of stages and included in the principal part are combined with each other to construct the gas turbine. When the set number of stages of the compressor or the turbine differs among a plurality of desired cycles, a substantially disk-shaped member having an outer periphery, which forms an inner peripheral wall of a substantially annular flow passage of the compressor or the turbine, is assembled into the cycle having a smaller number of stages so that the bearing-to-bearing distance is kept constant in the gas turbine operated in the plurality of desired cycles.Type: GrantFiled: January 29, 2004Date of Patent: January 22, 2008Assignee: Hitachi, Ltd.Inventors: Tomomi Koganezawa, Takanori Shibata, Nobuhiro Seiki, Shinya Marushima, Shinichi Higuchi, Nobuaki Kizuka, Ryou Akiyama, Masami Noda
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Patent number: 7251926Abstract: A plate-fin type regenerative heat exchanger is provided which can prevent clogging of a flow passage caused by a drift of liquid phase water even when compressed air contains a large amount of moisture and liquid droplets. The plate-fin type regenerative heat exchanger comprises a corrugated fin channel for heating compressed air containing liquid droplets and a corrugated fin channel to which the compressed air containing no liquid droplets is supplied. A pitch of fin members of the former corrugated fin channel is set to the Laplace length, whereby bridging of the liquid droplets between the fin members can be prevented.Type: GrantFiled: June 24, 2004Date of Patent: August 7, 2007Assignee: Hitachi, Ltd.Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae, Hidefumi Araki
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Patent number: 7100359Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.Type: GrantFiled: February 28, 2006Date of Patent: September 5, 2006Assignee: Hitachi, Ltd.Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
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Patent number: 7082748Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.Type: GrantFiled: July 23, 2004Date of Patent: August 1, 2006Assignee: Hitachi, Ltd.Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
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Publication number: 20060144034Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.Type: ApplicationFiled: February 28, 2006Publication date: July 6, 2006Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
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Publication number: 20050097881Abstract: A plate-fin type regenerative heat exchanger is provided which can prevent clogging of a flow passage caused by a drift of liquid phase water even when compressed air contains a large amount of moisture and liquid droplets. The plate-fin type regenerative heat exchanger comprises a corrugated fin channel for heating compressed air containing liquid droplets and a corrugated fin channel to which the compressed air containing no liquid droplets is supplied. A pitch of fin members of the former corrugated fin channel is set to the Laplace length, whereby bridging of the liquid droplets between the fin members can be prevented.Type: ApplicationFiled: June 24, 2004Publication date: May 12, 2005Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae, Hidefumi Araki
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Publication number: 20050076502Abstract: The invention provides a production process of a gas turbine capable of being applied to various cycles. A principal part of a gas turbine is set in advance based on roughly set conditions, and the number of stages of a compressor and the number of stages of a turbine, which can provide conditions suitable for a desired cycle, are set based on the set principal part. The compressor and the turbine each having the set number of stages and included in the principal part are combined with each other to construct the gas turbine. When the set number of stages of the compressor or the turbine differs among a plurality of desired cycles, a substantially disk-shaped member having an outer periphery, which forms an inner peripheral wall of a substantially annular flow passage of the compressor or the turbine, is assembled into the cycle having a smaller number of stages so that the bearing-to-bearing distance is kept constant in the gas turbine operated in the plurality of desired cycles.Type: ApplicationFiled: January 29, 2004Publication date: April 14, 2005Inventors: Tomomi Koganezawa, Takanori Shibata, Nobuhiro Seiki, Shinya Marushima, Shinichi Higuchi, Nobuaki Kizuka, Ryou Akiyama, Masami Noda
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Patent number: 6865893Abstract: A production process of a gas turbine capable of being applied to various cycles. A principal part of a gas turbine is initially set based on roughly set conditions, and the number of stages of the compressor and of the turbine for a desired cycle are set for the principal part. The compressor and the turbine each having the set number of stages and included in the principal part are combined to construct the gas turbine. When the set number of stages of the compressor or the turbine differs for a different desired cycle, a disk-shaped member having an outer periphery, which forms an inner peripheral wall of the annular flow passage of the compressor or the turbine, is assembled into the principal part having a smaller number of stages so that the bearing-to-bearing distance is kept constant.Type: GrantFiled: June 25, 2003Date of Patent: March 15, 2005Assignee: Hitachi, Ltd.Inventors: Tomomi Koganezawa, Takanori Shibata, Nobuhiro Seiki, Shinya Marushima, Shinichi Higuchi, Nobuaki Kizuka, Ryou Akiyama, Masami Noda
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Publication number: 20050039436Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.Type: ApplicationFiled: July 23, 2004Publication date: February 24, 2005Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
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Patent number: 6772596Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.Type: GrantFiled: October 1, 2003Date of Patent: August 10, 2004Assignee: Hitachi, Ltd.Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
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Patent number: 6718750Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.Type: GrantFiled: February 25, 2002Date of Patent: April 13, 2004Assignee: Hitachi, Ltd.Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
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Publication number: 20040065074Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.Type: ApplicationFiled: October 1, 2003Publication date: April 8, 2004Applicant: Hitachi, LimitedInventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
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Publication number: 20040060296Abstract: The invention provides a production process of a gas turbine capable of being applied to various cycles. A principal part of a gas turbine is set in advance based on roughly set conditions, and the number of stages of a compressor and the number of stages of a turbine, which can provide conditions suitable for a desired cycle, are set based on the set principal part. The compressor and the turbine each having the set number of stages and included in the principal part are combined with each other to construct the gas turbine. When the set number of stages of the compressor or the turbine differs among a plurality of desired cycles, a substantially disk-shaped member having an outer periphery, which forms an inner peripheral wall of a substantially annular flow passage of the compressor or the turbine, is assembled into the cycle having a smaller number of stages so that the bearing-to-bearing distance is kept constant in the gas turbine operated in the plurality of desired cycles.Type: ApplicationFiled: June 25, 2003Publication date: April 1, 2004Inventors: Tomomi Koganezawa, Takanori Shibata, Nobuhiro Seiki, Shinya Marushima, Shinichi Higuchi, Nobuaki Kizuka, Ryou Akiyama, Masami Noda
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Publication number: 20030019214Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.Type: ApplicationFiled: February 25, 2002Publication date: January 30, 2003Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
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Patent number: 5676922Abstract: A faulty chemical reactor in a chemical plant is removed, heat exchange is conducted between the faulty chemical reactor and a new chemical reactor with which the faulty chemical reactor is to be replaced, and then the new chemical reactor is installed at the position from which the faulty chemical reactor was previously removed.Type: GrantFiled: October 4, 1996Date of Patent: October 14, 1997Assignee: Hitachi, Ltd.Inventors: Shigeaki Namba, Shoji Takahashi, Toshiki Kahara, Nobuhiro Seiki
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Patent number: 5471832Abstract: A combined cycle power plant has a plurality of gas turbine units each having a gas turbine and a heat recovery boiler for generating steam from heat from exhaust gas from the gas turbine. The gas turbine of a first one of the gas turbine units is a steam-cooled gas turbine. Steam turbines are driven by steam from the heat recovery boilers. For start-up of the first gas turbine unit, cooling steam generated in a heat recovery boiler different from not being the heat recovery boiler of the first gas turbine unit is fed to the steam-cooled gas turbine to effect cooling thereof during at least part of the start-up operation of the first gas turbine unit.Type: GrantFiled: March 9, 1994Date of Patent: December 5, 1995Assignee: Hitachi, Ltd.Inventors: Shigehisa Sugita, Shozo Nakamura, Nobuhiro Seiki, Shinichi Hoizumi, Toshihiko Sasaki, Yoshiki Noguchi
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Patent number: 4935037Abstract: A fuel reforming apparatus includes a reaction tube for causing endothermic reaction for converting a fuel gas with hydrocarbon, steam, and the like mixed therein into a hydrogen-enriched gas using a catalyst, a combustor for generating a combustion gas for heating the reaction tube, a heat insulating layer for preventing the radiation of the combustion gas, and a combustion gas passage disposed around the reaction tube and allowing the combustion gas to flow therethrough, and a passage for air or fuel gas disposed around the fuel gas passage, a heat insulating layer being disposed around the outer peripheral surface of this passage.Type: GrantFiled: July 18, 1989Date of Patent: June 19, 1990Assignee: Hitachi, Ltd.Inventors: Kazuhito Koyama, Shigehisa Sugita, Seiichiro Sakaguchi, Nobuhiro Seiki, Asao Hanzawa
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Patent number: 4861348Abstract: A fuel reforming apparatus includes a reaction tube for causing endothermic reaction for converting a fuel gas with hydrocarbon, steam, and the like mixed therein into a hydrogen-enriched gas using a catalyst, a combustor for generating a combustion gas for heating the reaction tube, a heat insulating layer for preventing the radiation of the combustion gas, and a combustion gas passage disposed around the reaction tube and allowing the combustion gas to flow therethrough, and a passage for air or fuel gas disposed around the fuel gas passage, a heat insulating layer being disposed around the outer peripheral surface of this passage.Type: GrantFiled: October 8, 1987Date of Patent: August 29, 1989Assignee: Hitachi, Ltd.Inventors: Kazuhito Koyama, Shigehisa Sugita, Seiichiro Sakaguchi, Nobuhiro Seiki, Asao Hanzawa