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公开(公告)号：US20240175364A1
公开(公告)日：2024-05-30
申请号：US18432818
申请日：2024-02-05
CPC分类号： F01D5/147 , F01D25/12 , F01D25/14 , F23C7/02 , F05D2300/60 , F05D2300/70
摘要： A method of forming a gas turbine engine component, the method including forming a plurality of cooling apertures in a preform structure of the component, the plurality of cooling apertures of the preform structure comprising a first cooling aperture and a second cooling aperture, wherein cross-sectional shapes of the first and second cooling apertures of the preform structure are different from one another, as measured in a same relative plane; and applying a coating to at least a portion of the preform structure to form the component, wherein a cross-sectional shape of the first and second cooling apertures of the component are approximately the same as one another, as measured in the same relative plane.
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公开(公告)号：US20220154926A1
公开(公告)日：2022-05-19
申请号：US17587586
申请日：2022-01-28
摘要： An inward-firing combustion burner, includes a burner casing configured to receive a fuel-air mixture at a burner inlet and to provide hot combustion gas at a burner output, a combustion substrate disposed within the burner casing, the substrate having a shape comprising at least a semi-cone or a flat surface or equivalent shape, having a substrate porosity defined by a plurality of pores, and having a substrate inner surface and a substrate outer surface, the substrate configured to receive the fuel-air mixture at the outer surface of the substrate, the fuel-air mixture passing through the pores at a mixture flow rate from the substrate outer surface toward the substrate inner surface, and the burner configured such that, in operation, the fuel-air mixture ignites near the plurality of pores to form a respective plurality of flamelets, each flamelet corresponding to one of the pores.
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公开(公告)号：US11248785B2
公开(公告)日：2022-02-15
申请号：US16634981
申请日：2018-07-26
发明人： William Ross Miller , Rachel Ladue
摘要： A steam generating system includes a furnace, a nozzle tip assembly for pulverized coal and primary air as well as means for conveying secondary air in the furnace. The nozzle according to the invention comprises a nozzle body (3) and several channels (5) being connected with the nozzle body, the channels are diverging from each other. At the exit faces (17) of the channels obstructions (13) are disposed to induce huge turbulences of the primary air when entering the furnace. Due to these turbulences the primary air and the entrained coal are mixed very well before being combusted in the furnace. This results in a better more effective combustion with reduced NOx-emissions.
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公开(公告)号：US11236903B2
公开(公告)日：2022-02-01
申请号：US17001230
申请日：2020-08-24
摘要： An inward-firing combustion burner, includes a burner casing configured to receive a fuel-air mixture at a burner inlet and to provide hot combustion gas at a burner output, a combustion substrate disposed within the burner casing, the substrate having a shape comprising at least a semi-cone or a flat surface or equivalent shape, having a substrate porosity defined by a plurality of pores, and having a substrate inner surface and a substrate outer surface, the substrate configured to receive the fuel-air mixture at the outer surface of the substrate, the fuel-air mixture passing through the pores at a mixture flow rate from the substrate outer surface toward the substrate inner surface, and the burner configured such that, in operation, the fuel-air mixture ignites near the plurality of pores to form a respective plurality of flamelets, each flamelet corresponding to one of the pores.
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公开(公告)号：US20200072459A1
公开(公告)日：2020-03-05
申请号：US16609534
申请日：2018-05-25
发明人： David G. Schalles
IPC分类号： F23C7/02
摘要： A method of operating a combustion burner to heat a furnace. Fuel and combustion air are supplied into a combustion zone and ignited. Additional combustion air is supplied into the atmosphere outside of the combustion zone. The amount of additional combustion air supplied outside of the combustion zone is decreased as a temperature of the atmosphere inside the furnace increases such that the content of nitrogen oxides (NOx), as corrected for 3% O2 (cNOx (3% O2)), in the gases generated by combustion of the fuel and the combustion air and emitted from the furnace maintained below a predetermined value.
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公开(公告)号：US10012411B2
公开(公告)日：2018-07-03
申请号：US15067922
申请日：2016-03-11
申请人： Noritz Corporation
发明人： Ryosuke Umakoshi
IPC分类号： F24H1/16 , F24H9/14 , F24H9/18 , F23L1/00 , F24H9/00 , F23D1/00 , F23D14/04 , F23L5/02 , F23C7/02
CPC分类号： F24H1/165 , F23C7/02 , F23D1/00 , F23D14/045 , F23D2203/007 , F23D2214/00 , F23L1/00 , F23L5/02 , F24H9/0026 , F24H9/148 , F24H9/1836
摘要： A combustion apparatus includes a burner and a heat shield plate. The heat shield plate includes a main plate portion located on a lateral side of a flame formation region above the burner to erect, a stepped portion protruding from a lower end of the main plate portion toward the burner and set at approximately the same height as that of a flame hole surface of the burner, and air passage holes provided in the stepped portion. The main plate portion is provided with a facing wall portion which protrudes from a middle part of the main plate portion in a vertical height direction thereof toward the flame formation region and faces the air passage holes so as to be subjected to a collision with air travelling upward from the air passage holes. This configuration allows the heat shield plate to be properly cooled/protected, while reducing consumed air.
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公开(公告)号：US09657938B2
公开(公告)日：2017-05-23
申请号：US14192198
申请日：2014-02-27
CPC分类号： F23C7/02 , F23C6/045 , F23C7/008 , F23C2900/03005 , F23C2900/06041 , F23D11/24 , F23D11/38 , F23D11/402 , F23D11/404 , F23D2207/00 , F23D2208/00 , F23D2900/11403
摘要： A fuel combustion system comprises a discharge nozzle with concentric fuel and air orifices. A fuel conduit is coupled to each fuel orifice for supplying liquid fuel thereto. An air conduit is coupled to each air orifice for supplying air thereto. The fuel and the pressurized air only mixing with one another, upon being discharged from the respective fuel and air orifices, to form a fuel mixture. A supplemental air source supplies supplement air to facilitate combustion. An air deflector sleeve at least partially surrounds and accommodates the at least one discharge nozzle and a cylindrical blast tube surrounding the air deflector sleeve and an outlet end of the cylindrical blast tube supports a flame retention head. The flame retention head redirects the supplement air radially inward, through openings in the air deflector sleeve and the flame retention head, to assist with combustion of the fuel mixture.
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公开(公告)号：US09618208B2
公开(公告)日：2017-04-11
申请号：US14143589
申请日：2013-12-30
发明人： Joseph L. Hobbs , Jennifer A. M. Sidey , Robert L. Gordon , Epaminondas Mastorakos , Gilles Bourque
IPC分类号： F23R3/12 , F23R3/34 , F23C7/00 , F23R3/04 , F23R3/28 , F23C7/02 , F23C9/00 , F23R3/58 , F02C1/08 , F02C3/34
CPC分类号： F23R3/12 , F02C1/08 , F02C3/34 , F23C7/002 , F23C7/02 , F23C9/006 , F23C2202/40 , F23R3/04 , F23R3/286 , F23R3/343 , F23R3/58 , F23R2900/00015 , F23R2900/03282
摘要： A combustion chamber may include a first surface and a second surface interconnected by a wall forming a chamber having a central axis. The first surface may define an exhaust opening and the second surface defining a pilot opening, wherein the exhaust opening and the pilot opening align along the central axis. A plurality of inlet ports may be configured to deliver air to the chamber. A plurality of fuel ports may be arranged on an inside of the second surface to deliver fuel to the chamber. The air flow from the inlet ports and fuel from the fuel ports may oppose each other to create a vortex of product proximal to the second surface.
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公开(公告)号：US09261276B2
公开(公告)日：2016-02-16
申请号：US13980770
申请日：2012-01-20
CPC分类号： F23N1/02 , F23C6/045 , F23C7/02 , F23C99/00 , F23C2205/10 , F23C2205/20 , F23D14/22 , F23D14/32 , F23L9/00 , F23N3/002 , F23N2037/26 , Y02E20/344
摘要： The present invention provides a burner combustion method for supplying and combusting an oxidant stream and a fuel stream, wherein the oxidant stream is composed of a primary oxidant stream jetted from around the periphery of the fuel stream or from a position near the fuel stream, and a plurality of secondary oxidant streams, and by periodically changing the flow rate of at least one of the primary oxidant stream and the plurality of secondary oxidant streams, and also causing a periodic change in the oxygen concentration within the oxidant stream, causing a periodic change in the oxygen ratio which is calculated by dividing the supplied amount of oxygen, supplied by the oxidant stream, by the theoretically required amount of oxygen, and providing a difference between the periodic changes in the oxygen concentration and the oxygen ratio, the combustion state adopts a periodic oscillating state.
摘要翻译： 本发明提供了一种用于供应和燃烧氧化剂流和燃料流的燃烧器燃烧方法，其中所述氧化剂流由从燃料流的周围或靠近燃料流的位置喷射的主要氧化剂流组成，以及 多个次级氧化剂流，并且通过周期性地改变主氧化剂流和多个次级氧化剂流中的至少一种的流速，并且还引起氧化剂流内的氧浓度的周期性变化，引起周期性变化 在通过将由氧化剂流供给的供给量除以理论上所需量的氧而计算的氧比，并且提供氧浓度和氧气比的周期性变化之间的差异，燃烧状态采用 周期振荡状态。
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公开(公告)号：US20150099233A1
公开(公告)日：2015-04-09
申请号：US14509518
申请日：2014-10-08
发明人： John GOLDRING , Steven BILLETT , Lawrence BERG
CPC分类号： F23C5/32 , F23C3/00 , F23C6/045 , F23C7/02 , F23C2201/101 , F23C2900/06041 , F23L9/00
摘要： A combustion system comprises a combustion chamber and a flue gas duct located downstream of the combustion chamber to receive combustion products from the combustion chamber, the combustion chamber has a base and an enclosing wall connecting the base to the flue gas duct. The combustion chamber is provided with a plurality of combustion devices, the combustion devices being configured to deliver fuel and gas and/or air into the combustion chamber so as to generate a fireball within a combustion zone in the combustion chamber, the combustion devices further being configured such that the generated fireball rotates about an axis extending between the base and the flue duct. A secondary gas and/or air nozzle is provided in the base of the combustion chamber, at a location upstream of the combustion zone, the nozzle being for delivering gas and/or air into the combustion zone in a direction towards the flue duct.
摘要翻译： 燃烧系统包括位于燃烧室下游的燃烧室和烟气管道，用于接收来自燃烧室的燃烧产物，燃烧室具有基座和将基座连接到烟气管道的封闭壁。 燃烧室设置有多个燃烧装置，燃烧装置构造成将燃料和气体和/或空气输送到燃烧室中，以在燃烧室内的燃烧区域内产生火球，燃烧装置还包括 被配置为使得所产生的火球围绕在基部和烟道之间延伸的轴线旋转。 二次气体和/或空气喷嘴设置在燃烧室的基部中，在燃烧区的上游位置处，喷嘴用于沿朝向烟道的方向将气体和/或空气输送到燃烧区。
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