Patents by Inventor Tailai Hu
Tailai Hu 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: 10227921Abstract: A system includes a plurality of interconnected mixing assemblies configured to mix a first fuel and water to generate a first mixture, and mix a second fuel and the water to generate a second mixture. The first and second fuel mixtures are configured to combust in a plurality of combustors of a gas turbine. The interconnected mixing assemblies include first and second fuel passages, a water passage, first and second mixers, first and second fuel valves, and first and second water valves disposed in an integrated housing. The first fuel valve has a first fuel flow coefficient between approximately 1.0 to 1.5, the second fuel valve has a second fuel flow coefficient between approximately 3.0 to 5.0, the first water valve has a first water flow coefficient between approximately 0.4 to 0.55, and the second water valve has a second water flow coefficient between approximately 3.5 to 5.0.Type: GrantFiled: December 7, 2015Date of Patent: March 12, 2019Assignee: GENERAL ELECTRIC COMPANYInventors: Hua Zhang, Tailai Hu, Sudhakar Todeti, Kenneth Eugene Selfridge
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Patent number: 9470112Abstract: A system includes a heat recovery steam generator (HRSG) including a first pressure economizer, a first pressure evaporator that may receive a first portion of a feed water from the first pressure economizer at a first pressure, a re-heat section that may receive the first portion of the feed water from the first pressure economizer as a first steam flow, and a flash system including a first flash vessel that may receive a second portion of the feed water from the first pressure economizer and to generate a first flash steam flow. The system may combine the first flash steam flow with the first steam flow of the feed water at a second pressure less than the first pressure.Type: GrantFiled: November 13, 2014Date of Patent: October 18, 2016Assignee: General Electric CompanyInventors: Barrett David Gardiner, Tailai Hu
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Patent number: 9470150Abstract: The present application provides a power augmentation system for use with a gas turbine engine. The power augmentation system may include a compressor discharge manifold, an inlet bleed heat system in communication with the compressor discharge manifold via an inlet bleed heat line, and an auxiliary compressor in communication with the compressor discharge manifold via the inlet bleed heat line.Type: GrantFiled: April 30, 2013Date of Patent: October 18, 2016Assignee: General Electric CompanyInventors: Jianmin Zhang, Tailai Hu, Bradly Aaron Kippel
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Publication number: 20160138428Abstract: A system includes a heat recovery steam generator (HRSG) including a first pressure economizer, a first pressure evaporator that may receive a first portion of a feed water from the first pressure economizer at a first pressure, a re-heat section that may receive the first portion of the feed water from the first pressure economizer as a first steam flow, and a flash system including a first flash vessel that may receive a second portion of the feed water from the first pressure economizer and to generate a first flash steam flow. The system may combine the first flash steam flow with the first steam flow of the feed water at a second pressure less than the first pressure.Type: ApplicationFiled: November 13, 2014Publication date: May 19, 2016Inventors: Barrett David Gardiner, Tailai Hu
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Publication number: 20160084160Abstract: A system includes a plurality of interconnected mixing assemblies configured to mix a first fuel and water to generate a first mixture, and mix a second fuel and the water to generate a second mixture. The first and second fuel mixtures are configured to combust in a plurality of combustors of a gas turbine. The interconnected mixing assemblies include first and second fuel passages, a water passage, first and second mixers, first and second fuel valves, and first and second water valves disposed in an integrated housing. The first fuel valve has a first fuel flow coefficient between approximately 1.0 to 1.5, the second fuel valve has a second fuel flow coefficient between approximately 3.0 to 5.0, the first water valve has a first water flow coefficient between approximately 0.4 to 0.55, and the second water valve has a second water flow coefficient between approximately 3.5 to 5.0.Type: ApplicationFiled: December 7, 2015Publication date: March 24, 2016Inventors: Hua Zhang, Tailai Hu, Sudhakar Todeti, Kenneth Eugene Selfridge
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Patent number: 9243804Abstract: A system includes a plurality of interconnected mixing assemblies configured to mix a first fuel and water to generate a first mixture, and mix a second fuel and the water to generate a second mixture. The first and second fuel mixtures are configured to combust in a plurality of combustors of a gas turbine. The interconnected mixing assemblies include first and second fuel passages, a water passage, first and second mixers, first and second fuel valves, and first and second water valves disposed in an integrated housing. The first fuel valve has a first fuel flow coefficient between approximately 1.0 to 1.5, the second fuel valve has a second fuel flow coefficient between approximately 3.0 to 5.0, the first water valve has a first water flow coefficient between approximately 0.4 to 0.55, and the second water valve has a second water flow coefficient between approximately 3.5 to 5.0.Type: GrantFiled: October 24, 2011Date of Patent: January 26, 2016Assignee: General Electric CompanyInventors: Hua Zhang, Tailai Hu, Sudhakar Todeti, Kenneth Eugene Selfridge
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Patent number: 8984892Abstract: A combined cycle power plant includes a gas turbomachine, a steam turbomachine operatively coupled to the gas turbomachine, and a heat recovery steam generator operatively coupled to the gas turbomachine and the steam turbomachine. The heat recovery steam generator includes a high pressure reheat section provided with at least one high pressure superheater and at least one reheater. The combined cycle power plant further includes a controller operatively connected to the gas turbomachine, the steam turbomachine and the heat recovery steam generator. The controller is selectively activated to initiate a flow of steam through the heat recovery steam generator following shutdown of the gas turbomachine to lower a temperature of at least one of the high pressure superheater and the at least one reheater and reduce development of condensate quench effects during HRSG purge of a combined cycle power plant shutdown.Type: GrantFiled: October 27, 2011Date of Patent: March 24, 2015Assignee: General Electric CompanyInventors: Tailai Hu, Kelvin Rafael Estrada, Joel Donnell Holt, Diego Fernando Rancruel, Leslie Yung-Min Tong
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Patent number: 8881530Abstract: A system may include an insulated water tank configured to store a first heated water from a first plant component during operation of a plant, and a fuel heater comprising a heat exchanger, wherein the heat exchanger is configured to transfer heat from the first heated water to a fuel for a gas turbine engine during startup of the plant.Type: GrantFiled: September 2, 2010Date of Patent: November 11, 2014Assignee: General Electric CompanyInventors: Seyfettin Can Gulen, Tailai Hu
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Publication number: 20140321967Abstract: The present application provides a power augmentation system for use with a gas turbine engine. The power augmentation system may include a compressor discharge manifold, an inlet bleed heat system in communication with the compressor discharge manifold via an inlet bleed heat line, and an auxiliary compressor in communication with the compressor discharge manifold via the inlet bleed heat line.Type: ApplicationFiled: April 30, 2013Publication date: October 30, 2014Applicant: General Electric CompanyInventors: Jianmin Zhang, Tailai Hu, Bradly Aaron Kippel
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Patent number: 8528314Abstract: A combined cycle power plant startup system is provided. The system includes a steam turbine, a HRSG, a condenser, and a bypass system. The steam turbine may include a turbine section. The HRSG may be operably connected to the steam turbine for providing steam to the steam turbine. The HRSG may include a reheater. The bypass system may be configured to adjust the steam pressure downstream of the reheater by routing steam downstream of the reheater to the condenser. The bypass system may include at least one bypass line, at least one control valve operably connected to the at least one bypass line, a pressure gauge configured to monitor the steam pressure downstream of the reheater, and a controller configured to communicate with the pressure gauge and operate the at least one control valve.Type: GrantFiled: February 2, 2010Date of Patent: September 10, 2013Assignee: General Electric CompanyInventors: Leslie Yung-Min Tong, Diego Fernando Rancruel, Tailai Hu, Joel Donnell Holt
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Publication number: 20130098041Abstract: A system includes a plurality of interconnected mixing assemblies configured to mix a first fuel and water to generate a first mixture, and mix a second fuel and the water to generate a second mixture. The first and second fuel mixtures are configured to combust in a plurality of combustors of a gas turbine. The interconnected mixing assemblies include first and second fuel passages, a water passage, first and second mixers, first and second fuel valves, and first and second water valves disposed in an integrated housing. The first fuel valve has a first fuel flow coefficient between approximately 1.0 to 1.5, the second fuel valve has a second fuel flow coefficient between approximately 3.0 to 5.0, the first water valve has a first water flow coefficient between approximately 0.4 to 0.55, and the second water valve has a second water flow coefficient between approximately 3.5 to 5.0.Type: ApplicationFiled: October 24, 2011Publication date: April 25, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Hua Zhang, Tailai Hu, Sudhakar Todeti, Kenneth Eugene Selfridge
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Patent number: 8393138Abstract: Systems and methods for exhaust gas recirculation in which at least a desired effective oxygen concentration is maintained for stable combustion at increased recirculation rates. Oxygen-enriched gas is injected into the recirculated exhaust gas to achieve the desired effective oxygen concentration.Type: GrantFiled: May 20, 2011Date of Patent: March 12, 2013Assignee: American Air Liquide, Inc.Inventors: Tailai Hu, Pavol Pranda
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Patent number: 8276382Abstract: Embodiments of the invention can provide systems and methods for pre-warming a heat recovery steam generator and associated steam lines. According to one embodiment, a method for pre-warming a heat recovery steam generator can be provided. The method can include providing heating steam from a steam source. The heating steam is directed from the steam source to a superheater so that at least a portion of the superheater can be warmed. Once exiting the superheater, the heating steam can be further directed from the superheater to at least one bypass line and maintained in the bypass line until the bypass line attains a predefined temperature or pressure. Furthermore, the method can include directing, after the bypass line attains a predefined temperature or pressure, at least a portion of the heating steam from the bypass line to a reheater so that the reheater can be warmed.Type: GrantFiled: March 17, 2009Date of Patent: October 2, 2012Assignee: General Electric CompanyInventors: Tailai Hu, Kelvin R. Estrada, Michael Joseph Alexander
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Publication number: 20120055157Abstract: A system may include an insulated water tank configured to store a first heated water from a first plant component during operation of a plant, and a fuel heater comprising a heat exchanger, wherein the heat exchanger is configured to transfer heat from the first heated water to a fuel for a gas turbine engine during startup of the plant.Type: ApplicationFiled: September 2, 2010Publication date: March 8, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Seyfettin Can Gulen, Tailai Hu
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Publication number: 20120036828Abstract: A combined cycle power plant includes a gas turbomachine, a steam turbomachine operatively coupled to the gas turbomachine, and a heat recovery steam generator operatively coupled to the gas turbomachine and the steam turbomachine. The heat recovery steam generator includes a high pressure reheat section provided with at least one high pressure superheater and at least one reheater. The combined cycle power plant further includes a controller operatively connected to the gas turbomachine, the steam turbomachine and the heat recovery steam generator. The controller is selectively activated to initiate a flow of steam through the heat recovery steam generator following shutdown of the gas turbomachine to lower a temperature of at least one of the high pressure superheater and the at least one reheater and reduce development of condensate quench effects during HRSG purge of a combined cycle power plant shutdown.Type: ApplicationFiled: October 27, 2011Publication date: February 16, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Tailai Hu, Kelvin Rafael Estrada, Joel Donnell Holt, Diego Fernando Rancruel, Leslie Yung-Min Tong
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Publication number: 20110220037Abstract: Systems and methods for exhaust gas recirculation in which at least a desired effective oxygen concentration is maintained for stable combustion at increased recirculation rates. Oxygen-enriched gas is injected into the recirculated exhaust gas to achieve the desired effective oxygen concentration.Type: ApplicationFiled: May 20, 2011Publication date: September 15, 2011Applicant: American Air Liquide, Inc.Inventors: Tailai Hu, Pavol Pranda
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Publication number: 20110185744Abstract: A combined cycle power plant startup system is provided. The system includes a steam turbine, a HRSG, a condenser, and a bypass system. The steam turbine may include a turbine section. The HRSG may be operably connected to the steam turbine for providing steam to the steam turbine. The HRSG may include a reheater. The bypass system may be configured to adjust the steam pressure downstream of the reheater by routing steam downstream of the reheater to the condenser. The bypass system may include at least one bypass line, at least one control valve operably connected to the at least one bypass line, a pressure gauge configured to monitor the steam pressure downstream of the reheater, and a controller configured to communicate with the pressure gauge and operate the at least one control valve.Type: ApplicationFiled: February 2, 2010Publication date: August 4, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Leslie Yung-Min Tong, Diego Fernando Rancruel, Tailai Hu, Joel Donnell Holt
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Patent number: 7950217Abstract: Systems and methods for exhaust gas recirculation in which at least a desired effective oxygen concentration is maintained for stable combustion at increased recirculation rates. Oxygen-enriched gas is injected into the recirculated exhaust gas to achieve the desired effective oxygen concentration.Type: GrantFiled: June 8, 2006Date of Patent: May 31, 2011Assignee: American Air Liquide, Inc.Inventors: Tailai Hu, Pavol Pranda
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Publication number: 20100307157Abstract: A method of controlling a combustion turbine engine, wherein the engine includes: a fuel line including a heat exchange portion; a heating value meter; a cold leg bypass comprising an alternate fuel line that bypasses the heat exchange portion, the cold leg bypass being connected to the fuel line at an upstream fork and at a fuel mixing junction, the fuel mixing junction being positioned such that a length of fuel line between it and the inlet to the combustor is short; and valves for controlling the amount of fuel being directed through the heat exchange portion; the method comprising: measuring the heating value of the fuel; determining a target fuel temperature range based on the heating value and a target Modified Wobbe Index range; and controlling the fuel that bypasses the heat exchange portion such that the temperature of the fuel is within the target temperature range.Type: ApplicationFiled: June 8, 2009Publication date: December 9, 2010Inventors: Timothy R. Bilton, Dean M. Erickson, DurgaPrasad R. Nallamotu, Edward L. McGrath, Tailai Hu
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Publication number: 20100242430Abstract: A combined cycle power plant includes a gas turbomachine, a steam turbomachine operatively coupled to the gas turbomachine, and a heat recovery steam generator operatively coupled to the gas turbomachine and the steam turbomachine. The heat recovery steam generator includes a high pressure reheat section provided with at least one high pressure superheater and at least one reheater. The combined cycle power plant further includes a controller operatively connected to the gas turbomachine, the steam turbomachine and the heat recovery steam generator. The controller is selectively activated to initiate a flow of steam through the heat recovery steam generator following shutdown of the gas turbomachine to lower a temperature of at least one of the high pressure superheater and the at least one reheater and reduce development of condensate quench effects during HRSG purge of a combined cycle power plant shutdown.Type: ApplicationFiled: March 31, 2009Publication date: September 30, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Tailai Hu, Richard Henry Langdon, II, Joel Donnell Holt, Leslie Yung-Min Tong, Diego Fernando Rancruel, Kelvin Rafael Estrada