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公开(公告)号：US11175045B2
公开(公告)日：2021-11-16
申请号：US15861791
申请日：2018-01-04
发明人： Michael Anthony Benjamin , Girish Venkata Satya Sesha Goda , Habeeb Kunnummal Manat , Karthikeyan Sampath
摘要： A method and structure for operating a combustion system of a gas turbine engine to mitigate low frequency combustion acoustics is generally provided. The method includes flowing an oxidizer through a fuel nozzle passage defining an inner wall and an outer wall, in which each of the inner wall and the outer wall are contoured from a first radius to a second radius smaller than the first radius; flowing the oxidizer at a higher axial velocity at the inner wall relative to the outer wall upstream of a fuel injection port; flowing a fuel through the fuel injection port to the fuel nozzle passage to mix with the flow of oxidizer to produce a fuel-oxidizer mixture; and igniting the fuel-oxidizer mixture downstream of the fuel injection port.
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公开(公告)号：US20210317990A1
公开(公告)日：2021-10-14
申请号：US17358377
申请日：2021-06-25
发明人： Gregory Allen Boardman , Michael Anthony Benjamin , Clayton Stuart Cooper , Joseph Zelina , Eric John Stevens
摘要： Various embodiments include a trapped vortex combustor and a method for operating trapped vortex combustor. In one embodiment, the trapped vortex combustor comprises a trapped vortex combustion zone and at least one secondary combustion zone disposed downstream of the trapped vortex combustion zone. The trapped vortex combustion zone is operable to receive and combust a first fuel and a first air and produce a first combustion product flowing toroidally therein. The at least one secondary combustion zone is operable to receive and combust the first combustion product and at least one second injection consisting of fuel and/or air and produce at least one second combustion product therein. The combustor may reduce the residence time of the highest temperature combustion products and achieve the lower NOx emission.
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公开(公告)号：US11073286B2
公开(公告)日：2021-07-27
申请号：US15709958
申请日：2017-09-20
发明人： Gregory Allen Boardman , Michael Anthony Benjamin , Clayton Stuart Cooper , Joseph Zelina , Eric John Stevens
摘要： Various embodiments include a trapped vortex combustor and a method for operating trapped vortex combustor. In one embodiment, the trapped vortex combustor comprises a trapped vortex combustion zone and at least one secondary combustion zone disposed downstream of the trapped vortex combustion zone. The trapped vortex combustion zone is operable to receive and combust a first fuel and a first air and produce a first combustion product flowing toroidally therein. The at least one secondary combustion zone is operable to receive and combust the first combustion product and at least one second injection consisting of fuel and/or air and produce at least one second combustion product therein. The combustor may reduce the residence time of the highest temperature combustion products and achieve the lower NOx emission.
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公开(公告)号：US10788213B2
公开(公告)日：2020-09-29
申请号：US15754540
申请日：2016-08-04
发明人： Werner Dahm
摘要： Embodiments of the invention provide a system or a method for combusting reactants including a fuel and an oxidizer into combustion products in a combustor. A combustor can be configured to contain a flow of the reactants and the combustion products that extends in a first direction. The flow can be subject to acceleration in a second direction at least partly transverse to the first direction. One or more micro-flameholders can be disposed within the combustor at or upstream of a location at which the flow is subject to the acceleration in the second direction. The one or more micro-flameholders can be configured to facilitate or promote Rayleigh-Taylor instability to cause interpenetration of the reactants and the combustion products within the combustor.
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公开(公告)号：US20190264919A1
公开(公告)日：2019-08-29
申请号：US15904918
申请日：2018-02-26
发明人： Sibtosh Pal , Steven Clayton Vise , Arthur Wesley Johnson , Clayton Stuart Cooper , Joseph Zelina
摘要： A Brayton cycle engine including an inner wall assembly defining a detonation combustion region upstream thereof extended from a longitudinal wall into a gas flowpath. An actuator adjusts a depth of the detonation combustion region into the gas flowpath. A method for operating the engine includes flowing an oxidizer through the gas flowpath; capturing a portion of the flow of oxidizer via the inner wall; flowing a first flow of fuel to the captured flow of oxidizer; producing a rotating detonation gases via a mixture of the first flow of fuel and the captured flow of oxidizer; flowing at least a portion of the detonation gases downstream to mix with the flow of oxidizer; flowing a second flow of fuel to the mixture of detonation gases and oxidizer; and burning the mixture of the second flow of fuel and the detonation gases/oxidizer mixture.
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公开(公告)号：US09664391B2
公开(公告)日：2017-05-30
申请号：US14091619
申请日：2013-11-27
摘要： An annular type gas turbine combustor having a plurality of fuel nozzle assemblies (10) on a circumference includes a pilot nozzle unit (12) for spraying a fuel for diffusive combustion from a pilot outer peripheral nozzle (34) into a combustion chamber (8), a main nozzle unit (14) provided so as to surround the pilot nozzle unit (12) for spraying a fuel for premix combustion, and a flow guide (27) disposed on a downstream side of each of the fuel nozzle assemblies (10) and having a sectional area of a passage for air and air-fuel mixture from each of the fuel nozzle assemblies (10), which gradually increase in a downstream direction.
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7.发明授权Gas turbine combustor including a premixing chamber having an inner diameter enlarging portion 有权燃气轮机燃烧器包括具有内径扩大部分的预混合室公开(公告)号：US09441543B2
公开(公告)日：2016-09-13
申请号：US13682210
申请日：2012-11-20
摘要： A gas turbine combustor includes a combustion cylinder and a premixing tube. A protruding wall of the tube has an inner diameter enlarging portion with a chamfer at an open end thereof. A swirl flow in the tube is guided outward along the chamfer, so that the cross-section area of a straight flow in the tube is expanded to have a lower flow velocity, and the distance between a flame in the cylinder and the enlarging portion is shortened. When using the fuel with high heat radiation upon combustion, the enlarging portion is replaced with the one having a smaller chamfer. The cross-section area of the straight flow is reduced to increase the flow velocity, and the lift distance becomes longer. Therefore, the damage to the combustion cylinder owing to the intensified heat radiation is prevented. The flame lift position retained in the cylinder is easily set and changed.
摘要翻译： 燃气轮机燃烧器包括燃烧筒和预混合管。 管的突出壁具有在其开口端具有倒角的内径扩大部分。 管中的漩涡流沿着倒角被向外引导，使得管中的直流的横截面面积膨胀以具有较低的流速，并且气缸中的火焰与放大部分之间的距离为 缩短 当燃烧时使用高热辐射燃料时，放大部分被更小的倒角更换。 直流的横截面面积减小以增加流速，并且提升距离变长。 因此，防止了由于热辐射增强而对燃烧筒的损坏。 保持在气缸中的火焰提升位置容易设定和改变。
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公开(公告)号：US09328663B2
公开(公告)日：2016-05-03
申请号：US13906144
申请日：2013-05-30
发明人： Ronald Scott Bunker
CPC分类号： F02C7/08 , F02C3/10 , F05D2240/35 , F23R3/18 , F23R3/26 , F23R3/50 , F23R2900/00015 , F23R2900/03341
摘要： A gas turbine engine and method for operating a gas turbine engine includes compressing an air stream in a compressor and generating a post combustion gas by combusting a compressed air stream exiting from the compressor in a combustor. The post combustion gas is expanded in a first turbine. The expanded combustion gas exiting from the first turbine is split into a first stream, a second stream and a third stream. The first stream of the expanded combustion gas is combusted in a reheat combustor. An outer liner and flame stabilizer of the reheat combustor are cooled using the second stream of the expanded combustion gas. An inner liner of the reheat combustor is cooled using the third stream of the expanded combustion gas and a portion of the second stream of the expanded combustion gas passing through the one or more flame stabilizers.
摘要翻译： 用于操作燃气涡轮发动机的燃气涡轮发动机和方法包括压缩压缩机中的空气流并且通过在燃烧器中燃烧从压缩机排出的压缩空气流而产生后燃气体。 后燃烧气体在第一涡轮机中膨胀。 从第一涡轮机排出的膨胀的燃烧气体被分成第一流，第二流和第三流。 膨胀燃烧气体的第一流在再热燃烧器中燃烧。 使用扩展燃烧气体的第二流冷却再热燃烧器的外衬和火焰稳定器。 再加热燃烧器的内衬层使用膨胀燃烧气体的第三流冷却，并且膨胀的燃烧气体的第二流的一部分通过一个或多个火焰稳定器。
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公开(公告)号：US08966909B2
公开(公告)日：2015-03-03
申请号：US13590302
申请日：2012-08-21
CPC分类号： F23R3/20 , F02C7/22 , F02C7/228 , F02C7/24 , F23D14/02 , F23R3/18 , F23R3/283 , F23R3/286 , F23R3/34 , F23R3/42 , F23R3/46 , F23R2900/00014
摘要： A system and method for reducing combustion dynamics includes first and second combustors arranged about an axis, and each combustor includes a plurality of tubes that extend axially through at least a portion of the combustor and a combustion chamber downstream from the plurality of tubes. A fuel injector extends through each tube to provide fluid communication into each tube at a fourth axial distance from the combustion chamber. The fourth axial distance in the first combustor is different than the fourth axial distance in the second combustor.
摘要翻译： 用于减少燃烧动力学的系统和方法包括围绕轴线布置的第一和第二燃烧器，并且每个燃烧器包括多个管，所述多个管轴向延伸穿过燃烧器的至少一部分和多个管下游的燃烧室。 燃料喷射器延伸穿过每个管以在距离燃烧室的第四轴向距离处提供到每个管中的流体连通。 第一燃烧器中的第四轴向距离与第二燃烧器中的第四轴向距离不同。
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公开(公告)号：US20110126548A1
公开(公告)日：2011-06-02
申请号：US12451761
申请日：2008-05-27
申请人： Thomas Hammer , Dieter Most
发明人： Thomas Hammer , Dieter Most
CPC分类号： F23C99/001 , F23C2900/99005 , F23D14/02
摘要： Electric fields control an electric combustion. Plasmas are created by a dielectrically impeded discharge. At least one part of the fuel is mixed with water vapor in the supply line and is subjected to a plasma discharge in a compact reactor that is in close contact with the burner in terms of reaction kinetics. In the associated device, a plasma reactor for creating a reactive plasma gas with at least one supply line for the fuel gas-water vapor mixture and an electric energy supply is integrated into the burner. The device provides suitable flow guidance of the fuel gas-air mixture, of the fuel gas-water vapor mixture, and of the reactive plasma gas.
摘要翻译： 电场控制电气燃烧。 等离子体是由介电阻塞放电产生的。 至少一部分燃料与供应管线中的水蒸气混合，并且在反应动力学方面与在燃烧器紧密接触的紧凑型反应器中进行等离子体放电。 在相关装置中，用于产生具有用于燃料气 - 水蒸汽混合物的至少一个供应管线和电能供应的反应等离子体气体的等离子体反应器被集成到燃烧器中。 该装置提供燃料气体 - 空气混合物，燃料气体 - 水蒸气混合物和反应性等离子体气体的合适的流动引导。
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