Patents by Inventor Akinori Koga
Akinori Koga 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: 7143581Abstract: A gas turbine plant comprises an air compressor, gas turbine including at least one high temperature section, a driven equipment, which are operatively connected in series, a gas turbine combustor arranged between the air compressor and the gas turbine, a fuel system disposed for supplying a fuel to the gas turbine combustor, and a heat exchange section for heating the fuel from the fuel by means of a high pressure air as a heating medium fed from the air compressor.Type: GrantFiled: December 19, 2005Date of Patent: December 5, 2006Assignee: Kabushiki Kaisha ToshibaInventors: Tadashi Kobayashi, Takanari Okamura, Shokou Ito, Takashi Sasaki, Akinori Koga
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Publication number: 20060225425Abstract: A gas turbine plant comprises an air compressor, gas turbine including at least one high temperature section, a driven equipment, which are operatively connected in series, a gas turbine combustor arranged between the air compressor and the gas turbine, a fuel system disposed for supplying a fuel to the gas turbine combustor, and a heat exchange section for heating the fuel from the fuel by means of a high pressure air as a heating medium fed from the air compressor.Type: ApplicationFiled: December 19, 2005Publication date: October 12, 2006Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tadashi Kobayashi, Takanari Okamura, Shokou Ito, Takashi Sasaki, Akinori Koga
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Patent number: 6993913Abstract: A gas turbine plant comprises an air compressor, gas turbine including at least one high temperature section, a driven equipment, which are operatively connected in series, a gas turbine combustor arranged between the air compressor and the gas turbine, a fuel system disposed for supplying a fuel to the gas turbine combustor, and a heat exchange section for heating the fuel from the fuel by means of a high pressure air as a heating medium fed from the air compressor.Type: GrantFiled: September 9, 2003Date of Patent: February 7, 2006Assignee: Kabushiki Kaisha ToshibaInventors: Tadashi Kobayashi, Takanari Okamura, Shokou Ito, Takashi Sasaki, Akinori Koga
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Patent number: 6857270Abstract: A gas turbine plant comprises an air compressor, gas turbine including at least one high temperature section, a driven equipment, which are operatively connected in series, a gas turbine combustor arranged between the air compressor and the gas turbine, a fuel system disposed for supplying a fuel to the gas turbine combustor, and a heat exchange section for heating the fuel from the fuel by means of a high pressure air as a heating medium fed from the air compressor.Type: GrantFiled: September 9, 2003Date of Patent: February 22, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Tadashi Kobayashi, Takanari Okamura, Shokou Ito, Takashi Sasaki, Akinori Koga
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Publication number: 20040206092Abstract: A gas turbine plant comprises an air compressor, gas turbine including at least one high temperature section, a driven equipment, which are operatively connected in series, a gas turbine combustor arranged between the air compressor and the gas turbine, a fuel system disposed for supplying a fuel to the gas turbine combustor, and a heat exchange section for heating the fuel from the fuel by means of a high pressure air as a heating medium fed from the air compressor.Type: ApplicationFiled: September 9, 2003Publication date: October 21, 2004Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tadashi Kobayashi, Takanari Okamura, Shokou Ito, Takashi Sasaki, Akinori Koga
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Publication number: 20040045294Abstract: A gas turbine plant comprises an air compressor, gas turbine including at least one high temperature section, a driven equipment, which are operatively connected in series, a gas turbine combustor arranged between the air compressor and the gas turbine, a fuel system disposed for supplying a fuel to the gas turbine combustor, and a heat exchange section for heating the fuel from the fuel by means of a high pressure air as a heating medium fed from the air compressor.Type: ApplicationFiled: September 9, 2003Publication date: March 11, 2004Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tadashi Kobayashi, Takanari Okamura, Shokou Ito, Takashi Sasaki, Akinori Koga
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Patent number: 6679059Abstract: A gas turbine plant comprises an air compressor, gas turbine turbine including at least one high temperature section, a driven equipment, which are operatively connected in series, a gas turbine combustor arranged between the air compressor and the gas turbine, a fuel system disposed for supplying a fuel to the gas turbine combustor, and a heat exchange section for heating the fuel from the fuel by means of a high pressure air as a heating medium fed from the air compressor.Type: GrantFiled: November 4, 2002Date of Patent: January 20, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Tadashi Kobayashi, Takanari Okamura, Shokou Ito, Takashi Sasaki, Akinori Koga
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Publication number: 20030056513Abstract: A gas turbine plant comprises an air compressor, gas turbine turbine including at least one high temperature section, a driven equipment, which are operatively connected in series, a gas turbine combustor arranged between the air compressor and the gas turbine, a fuel system disposed for supplying a fuel to the gas turbine combustor, and a heat exchange section for heating the fuel from the fuel by means of a high pressure air as a heating medium fed from the air compressor.Type: ApplicationFiled: November 4, 2002Publication date: March 27, 2003Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tadashi Kobayashi, Takanari Okamura, Shokou Ito, Takashi Sasaki, Akinori Koga
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Publication number: 20020092301Abstract: A gas turbine plant comprises an air compressor, gas turbine turbine including at least one high temperature section, a driven equipment, which are operatively connected in series, a gas turbine combustor arranged between the air compressor and the gas turbine, a fuel system disposed for supplying a fuel to the gas turbine combustor, and a heat exchange section for heating the fuel from the fuel by means of a high pressure air as a heating medium fed from the air compressor.Type: ApplicationFiled: March 8, 2002Publication date: July 18, 2002Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tadashi Kobayashi, Takanari Okamura, Shokou Ito, Takashi Sasaki, Akinori Koga
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Patent number: 6398503Abstract: A high temperature component such a gas turbine high temperature component, for example, constituting movable or stationary blade portion, thereby comprises a base material and a thermal barrier coating coated on a surface of the base material. The thermal barrier coating has a thermal barrier characteristic controlled in accordance with an environment to which a high temperature component is exposed so as to make substantially uniform a surface temperature of the base material. The thermal barrier coating comprises a thermal barrier ceramic layer having a thermal barrier characteristic capable of being controlled by varying a thickness thereof at portions of the thermal barrier ceramic layer.Type: GrantFiled: April 27, 1999Date of Patent: June 4, 2002Assignee: Kabushiki Kaisha ToshibaInventors: Masashi Takahashi, Kazuhide Matsumoto, Masayuki Itoh, Masahiro Saitou, Kunihiko Wada, Akinori Koga
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Publication number: 20010022087Abstract: A gas turbine plant comprises an air compressor, gas turbine turbine including at least one high temperature section, a driven equipment, which are operatively connected in series, a gas turbine combustor arranged between the air compressor and the gas turbine, a fuel system disposed for supplying a fuel to the gas turbine combustor, and a heat exchange section for heating the fuel from the fuel by means of a high pressure air as a heating medium fed from the air compressor.Type: ApplicationFiled: May 16, 2001Publication date: September 20, 2001Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tadashi Kobayashi, Takanari Okamura, Shokou Ito, Takashi Sasaki, Akinori Koga
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Patent number: 6253554Abstract: A gas turbine plant comprises an air compressor, gas turbine including at least one high temperature section, and driven equipment, which are operatively connected in series, a gas turbine combustor arranged between the air compressor and the gas turbine, a fuel system disposed for supplying a fuel to the gas turbine combustor, and a heat exchange section for heating the fuel from the fuel by means of a high pressure air as a heating medium fed from the air compressor.Type: GrantFiled: September 17, 1998Date of Patent: July 3, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Tadashi Kobayashi, Takanari Okamura, Shokou Ito, Takashi Sasaki, Akinori Koga
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Patent number: 6227804Abstract: A gas turbine blade is provided with a hollow blade effective section and a blade implanted section operatively connected to the blade effective section and the gas turbine blade is formed with: a leading edge passage for guiding a cooling medium from a supply passage of the blade implanted section on a blade leading edge side of the hollow blade effective section; leading edge intermediate passages following the leading edge passage; and a trailing edge passage for guiding the cooling medium from a supply passage of a blade implanted section on a blade trailing edge side of the hollow blade effective section. The leading edge passage being provided with a heat transfer accelerating element which is arranged in a right ascendant state inclined to an advancing flow direction of the cooling medium when supplying the cooling medium from the blade implanted section to a blade tip section side or left (leading edge side) ascendant state from the blade tip section to the blade implanted section.Type: GrantFiled: February 26, 1999Date of Patent: May 8, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Akinori Koga, Hiroyuki Kawagishi, Takanari Okamura, Tsuneo Hijikata, Shokou Ito
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Patent number: 6176676Abstract: Structure with elements includes a main body of the element used in gas stream and a plurality of fluid passage. Each outlet of the fluid passage is opened on surface of the main body. Coolant fluid flows from each outlet through the passage to cover the surface as a film-like fluid. The plurality of fluid passages include first fluid passages and second fluid passages. The coolant fluid flows from the outlet of the first fluid passage along the direction of the gas stream on the surface. On the other hand, the coolant fluid also flows from the outlet of the second fluid passage toward the gas stream neighbored on each outlet of the first fluid passage.Type: GrantFiled: October 20, 1999Date of Patent: January 23, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Kazutaka Ikeda, Akinori Koga, Junji Ishii
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Patent number: 6105362Abstract: A combined cycle power plant comprises a gas turbine system and a steam cycle system having a steam turbine to be driven by the steam generated by the waste heat of the exhaust gas of the gas turbine system, wherein the steam from the steam cycle system flows through a gas turbine cooling system of the gas turbine to cool the gas turbine blades and other elements of the gas turbine system to be cooled and the waste heat of the gas turbine system is effectively collected. The gas turbine cooling system is supplied selectively with bleed air from the compressor of the gas turbine or the steam provided from another steam cycle system in order to ensure a sufficient coolant supply at the time of starting and stopping the plant and during the operation with a partial load.Type: GrantFiled: March 9, 1998Date of Patent: August 22, 2000Assignee: Kabushiki Kaisha ToshibaInventors: Fumio Ohtomo, Yuji Nakata, Yoshitaka Fukuyama, Asako Inomata, Sachio Shibuya, Akinori Koga, Junji Ishii, Shoko Ito, Hironobu Yamamoto
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Patent number: 6092982Abstract: Structure with elements includes a main body of the element used in gas stream and a plurality of fluid passage. Each outlet of the fluid passage is opened on surface of the main body. Coolant fluid flows from each outlet through the passage to cover the surface as a film-like fluid. The plurality of fluid passages include first fluid passages and second fluid passages. The coolant fluid flows from the outlet of the first fluid passage along the direction of the gas stream on the surface. On the other hand, the coolant fluid also flows from the outlet of the second fluid passage toward the gas stream neighbored on each outlet of the first fluid passage.Type: GrantFiled: May 23, 1997Date of Patent: July 25, 2000Assignee: Kabushiki Kaisha ToshibaInventors: Kazutaka Ikeda, Akinori Koga, Junji Ishii
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Patent number: 6038850Abstract: A combined cycle power plant comprises a gas turbine system and a steam cycle system having a steam turbine to be driven by the steam generated by the waste heat of the exhaust gas of the gas turbine system, wherein the steam from the steam cycle system flows through a gas turbine cooling system of the gas turbine to cool the gas turbine blades and other elements of the gas turbine system to be cooled and the waste heat of the gas turbine system is effectively collected. The gas turbine cooling system has two or more than two cooling ducts formed in two or more than two elements of the gas turbine system to be cooled such as the gas turbine blades and the combustor of the gas turbine system so that steam is made to flow through the cooling ducts of these two or more than two elements to be cooled to effectively and maximally exploit the cooling potential and the waste heat collecting potential of the steam and hence improve the overall thermal efficiency of the plant.Type: GrantFiled: July 13, 1998Date of Patent: March 21, 2000Assignee: Kabushiki Kaisha ToshibaInventors: Fumio Ohtomo, Yuji Nakata, Yoshitaka Fukuyama, Asako Inomata, Sachio Shibuya, Akinori Koga, Junji Ishii, Shoko Ito, Hironobu Yamamoto
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Patent number: 6000213Abstract: A combined cycle power plant comprises a gas turbine system and a steam cycle system having a steam turbine to be driven by the steam generated by the waste heat of the exhaust gas of the gas turbine system, wherein the steam from the steam cycle system flows through a gas turbine cooling system of the gas turbine to cool the gas turbine blades and other elements of the gas turbine system to be cooled and the waste heat of the gas turbine system is effectively collected. The gas turbine cooling system has two or more than two coolooling ducts formed in two or more than two elements of the gas turbine system to be cooled such as the gas turbine blades and the combustor of the gas turbine system so that steam is made to flow through the cooling ducts of these two or more than two elements to be cooled to effectively and maximally exploit the cooling potential and the waste heat collecting potential of the steam and hence improve the overall thermal efficiency of the plant.Type: GrantFiled: July 13, 1998Date of Patent: December 14, 1999Assignee: Kabushiki Kaisha ToshibaInventors: Fumio Ohtomo, Yuji Nakata, Yoshitaka Fukuyama, Asako Inomata, Sachio Shibuya, Akinori Koga, Junji Ishii, Shoko Ito, Hironobu Yamamoto
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Patent number: 5778657Abstract: A combined cycle power plant comprises a gas turbine system and a steam cycle system having a steam turbine to be driven by the steam generated by the waste heat of the exhaust gas of the gas turbine system, wherein the steam from the steam cycle system flows through a gas turbine cooling system of the gas turbine to cool the gas turbine blades and other elements of the gas turbine system to be cooled and the waste heat of the gas turbine system is effectively collected. The gas turbine cooling system has two or more than two cooling ducts formed in two or more than two elements of the gas turbine system to be cooled such as the gas turbine blades and the combustor of the gas turbine system so that steam is made to flow through the cooling ducts of these two or more than two elements to be cooled to effectively and maximally exploit the cooling potential and the waste heat collecting potential of the steam and hence improve the overall thermal efficiency of the plant.Type: GrantFiled: September 20, 1996Date of Patent: July 14, 1998Assignee: Kabushiki Kaisha ToshibaInventors: Fumio Ohtomo, Yuji Nakata, Yoshitaka Fukuyama, Asako Inomata, Sachio Shibuya, Akinori Koga, Junji Ishii, Shoko Ito, Hironobu Yamamoto