[특허]Dual fuel mixer for gas turbine combustor

Dual fuel mixer for gas turbine combustor 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02C-003/20 F23R-003/36
출원번호	US-0304341 (1994-09-12)
발명자 / 주소	Joshi Narendra D. (Cincinnati OH) Ekstedt Edward E. (Cincinnati OH)
출원인 / 주소	General Electric Company (Cincinnati OH 02)
인용정보	피인용 횟수 : 57 인용 특허 : 0

초록 ▼

A dual fuel mixer is disclosed having a mixing duct, a shroud surrounding the upstream end of the mixing duct having contained therein a gas fuel manifold and a liquid fuel manifold in flow communication with a gas fuel supply and a liquid fuel supply, respectively, and control means, a set of inner and outer annular counter-rotating swirlers adjacent the upstream end of the mixing duct, where at least the outer annular swirlers include hollow vanes with internal cavities and fuel passages, all of which are in fluid communication with the gas and liquid fuel manifolds to inject gas and liquid fuel into the air stream, and a hub separating the inner and outer annular swirlers to allow independent rotation thereof wherein high pressure air from a compressor is injected into the mixing duct through the swirlers to form an intense shear region and gas and/or liquid fuel is injected into the air stream from the outer annular swirler vanes so that the high pressure air and the fuel is uniformly mixed therein so as to produce minimal formation of pollutants when the fuel/air mixture is exhausted out the downstream end of the mixing duct into the combustor and ignited.

대표청구항 ▼

An apparatus for premixing fuel and air prior to combustion in a gas turbine engine, comprising: (a) a linear mixing duct having a circular cross section defined by a wall; (b) a shroud surrounding the upstream end of said mixing duct, said shroud having contained therein a gas fuel manifold and a liquid fuel manifold, each of said manifolds being in flow communication with a gas fuel supply and a liquid fuel supply, respectively, and control means; (c) a set of inner and outer annular counter-rotating swirlers adjacent the upstream end of said mixing duct for imparting swirl to an air stream, said outer annular swirlers including hollow vanes with internal cavities, wherein the internal cavities of said outer swirler vanes are in fluid communication with said gas fuel manifold and said liquid fuel manifold, and said outer swirler vanes having a plurality of fuel passages therethrough in flow communication with said internal cavities to inject gas fuel and/or liquid fuel into said air stream; and (d) a hub separating said inner and outer annular swirlers to allow independent rotation thereof; wherein high pressure air from a compressor is injected into said mixing duct through said swirlers to form an intense shear region, and gas fuel and/or liquid fuel is injected into said mixing duct from said outer swirler vane passages so that the high pressure air and the fuel is uniformly mixed therein, whereby minimal formation of pollutants is produced when the fuel/air mixture is exhausted out the downstream end of said mixing duct into the combustor and ignited.

이 특허를 인용한 특허 (57)

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Saitoh, Keijiro; Ohta, Masataka; Tanimura, Satoshi; Mandai, Shigemi, Combustor of gas turbine with concentric swirler vanes.
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Gerendas, Miklos; Doerr, Thomas, Device for the injection of fuel into the flow wake of swirler vanes.
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Popovic, Predrag; Baruah, Abinash, Diffusion nozzles for low-oxygen fuel nozzle assembly and method.
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Acharya, Sumanta, Efficient premixing fuel-air nozzle system.
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Laster, Walter R.; Cai, Weidong; Fox, Timothy A.; Landry, Kyle L., Flex-fuel injector for gas turbines.
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Pfeffer, Brett A.; Ryon, Jason A., Flexible swirlers.
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Erlendur Steinthorsson ; Michael A. Benjamin ; David R. Barnhart, Fuel atomization method for turbine combustion engines having aerodynamic turning vanes.
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Curtis L. Brown ; Douglas M. Fortuna ; Gilbert H. Badeer, Fuel delivery systems and method.
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Myers, Geoffrey David; Parsania, Nishant Govindbhai; Boardman, Gregory Allen, Fuel nozzle assembly for gas turbine system.
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Boardman, Gregory Allen; Westmoreland, III, James Harold; Crothers, Sarah Lori; Chila, Ronald James, Fuel nozzle for reducing modal coupling of combustion dynamics.
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Steinhorsson, Erlendur; Benjamin, Michael A.; Barnhart, David R., Fuel nozzle for turbine combustion engines having aerodynamic turning vanes.
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Steinthorsson, Erlendur; Benjamin, Michael A.; Barnhart, David R., Fuel nozzle for turbine combustion engines having aerodynamic turning vanes.
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Abd El-Nabi, Bassam Sabry Mohammad; Boardman, Gregory Allen, Fuel nozzle for use in a turbine engine and method of assembly.
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Williams, Brandon Philip; Thompson, Kevin Eugene; Fogarty, Robert Russell, Fuel nozzle having aerodynamically shaped helical turning vanes.
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Abdel-Hafez, Ahmed A.; EL Kady, Ahmed Mostafa; Zong, Nan; Hook, Jr., Richard Bradford; Handelsman, Steven, Fuel-air mixer for use with a combustor assembly.
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Corr, II,Robert Anthony; Caron,Tim; Barnes,John, Fuel-air premixing system for a catalytic combustor.
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Doerr,Thomas; Lazik,Waldemar, Gas turbine combustion chamber with defined fuel input for the improvement of the homogeneity of the fuel-air mixture.
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Becker, Jochen, Gas turbine combustion chamber with fuel injection over an entire combustion chamber annulus.
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Popovic, Predrag; Baruah, Abinash; Kraemer, Gilbert Otto; Ross, William Thomas, Gas turbine combustor having a fuel nozzle for flame anchoring.
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Burrus, David Louis; Joshi, Narendra Digamber; Haynes, Joel Meier; Feitelberg, Alan S., Gas turbine engine combustor can with trapped vortex cavity.
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Haynes, Joel Meier; Feitelberg, Alan S.; Burrus, David Louis; Joshi, Narendra Digamber, Gas turbine engine combustor can with trapped vortex cavity.
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Oikawa, Stephen Oliver; Tang, Wei, Gas-liquid premixer.
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Rackwitz, Leif; Bagchi, Imon-Kalyan; Doerr, Thomas, Gas-turbine lean combustor with fuel nozzle with controlled fuel inhomogeneity.
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Hadley, Mark Allan; Felling, David Kenton, Injector having multiple fuel pegs.
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Varatharajan, Balachandar; Ziminsky, Willy S.; Lipinski, John; Kraemer, Gilbert O.; Yilmaz, Ertan; Lacy, Benjamin, Lean direct injection diffusion tip and related method.
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Ryan William Richard, Low Nox combustor having dual fuel injection system.
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Lanier, William Steven; Ahlgren, Frederic Francis; Kircher, Theodore Paul, Method and apparatus for measuring and controlling selective catalytic reduction (SCR) emission control systems.
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Ohlsen Ib,DKX, Method and burner for introducing fuel to a kiln.
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Zuo, Baifang; Lacy, Benjamin Paul; Stevenson, Christian Xavier, Methods and systems to enhance flame holding in a gas turbine engine.
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Glynn Christopher Charles ; Halila Ely Eskenazi ; Bibler John David ; Morris David Byron, Modular combustor dome.
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Poyyapakkam, Madhavan; Winkler, Anton; Syed, Khawar; Ciani, Andrea, Premixed burner for a gas turbine combustor.
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Ishizaka, Koichi; Ito, Eisaku; Tanimura, Satoshi, Premixed combustion burner of gas turbine technical field.
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Myers, Geoffrey David, Premixing nozzle.
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Evans Tyler T. ; Carroll Robert G., Radial inflow dual fuel injector.
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Poyyapakkam, Madhavan; Winkler, Anton; Syed, Khawar; Eroglu, Adnan; Ciani, Andrea, Reheat burner injection system.
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Stuttaford, Peter; Kojovic, Aleksandar, Swirled diffusion dump combustor.
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Widener,Stanley Kevin, Swirler configurations for combustor nozzles and related method.
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Wilbraham, Nigel, Swirler with concentric fuel and air tubes for a gas turbine engine.
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Menon, Arvind Venugopal; Truesdale, Alan Meier; Kulkarni, Abhijit Prabhakar; Popovic, Predrag, System and method for controlled fuel blending in gas turbines.
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Menon, Arvind Venugopal; Truesdale, Alan Meier; Kulkarni, Abhijit Prabhakar; Popovic, Predrag, System and method for fuel blending and control in gas turbines.
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Uhm, Jong Ho; Ziminsky, Willy Steve; Johnson, Thomas Edward; Hughes, Michael John; York, William David, System for reducing combustion dynamics and NOx in a combustor.
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Potnis, Shailesh Vijay; Joshi, Narendra Digamber, Turbine inlet air-cooling system and method.
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Dual fuel mixer for gas turbine combustor 원문보기

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