Method of forming a fuel feed passage in the feed arm of a fuel injector
    101.
    发明申请
    Method of forming a fuel feed passage in the feed arm of a fuel injector 有权
    在燃料喷射器的进料臂中形成燃料供给通道的方法

    公开(公告)号:US20050155224A1

    公开(公告)日:2005-07-21

    申请号:US10760859

    申请日:2004-01-20

    摘要: A method is disclosed for forming a fuel feed passage in the feed arm of a fuel injector. The method includes the steps of providing a fuel feed passage in the feed arm of a fuel injector, whereby the fuel feed passage has an initial cross-sectional flow area that corresponds with an initial fuel flow velocity, an initial convection heat transfer coefficient and initial localized wetted wall temperatures for the fuel feed passage, for a given fuel flow rate and fuel temperature. The method further includes decreasing the initial cross-sectional flow area of the fuel feed passage so as to increase the fuel flow velocity and the convection heat transfer coefficient for the fuel feed passage, while lowering the localized wetted wall temperatures for the fuel feed passage, without varying the given fuel flow rate and fuel temperature.

    摘要翻译: 公开了一种用于在燃料喷射器的进料臂中形成燃料供给通道的方法。 该方法包括以下步骤:在燃料喷射器的进料臂中设置燃料供给通道,由此燃料供给通道具有与初始燃料流速,初始对流传热系数和初始对流传热系数对应的初始横截面积面积 对于给定的燃料流率和燃料温度,燃料供给通道的局部润湿壁温度。 该方法还包括降低燃料供给通道的初始横截面流动面积,以便增加燃料供给通道的燃料流速和对流传热系数,同时降低燃料供给通道的局部润湿壁温度, 而不改变给定的燃料流量和燃料温度。

    Method and apparatus to decrease combustor emissions
    102.
    发明申请
    Method and apparatus to decrease combustor emissions 有权
    减少燃烧器排放的方法和装置

    公开(公告)号:US20040079085A1

    公开(公告)日:2004-04-29

    申请号:US10061148

    申请日:2002-02-01

    IPC分类号: F23R003/14

    摘要: A method for operating a gas turbine engine facilitates reducing an amount of emissions from a combustor. The combustor includes a mixer assembly including a pilot mixer, a main mixer, and a centerbody that extends therebetween. The pilot mixer includes a pilot fuel nozzle and a plurality of axial swirlers. The main mixer includes a main swirler and a plurality of fuel injection ports. The method comprises injecting fuel into the combustor through the pilot mixer, such that the fuel is discharged downstream from the pilot mixer axial swirlers, and directing flow exiting the pilot mixer with a lip extending from the centerbody into a pilot flame zone downstream from said pilot mixer.

    摘要翻译: 用于操作燃气涡轮发动机的方法有助于减少来自燃烧器的排放量。 燃烧器包括一个混合器组件,该混合器组件包括一个先导式混合器,一个主混合器和一个在其间延伸的中心 先导式混合机包括一个先导燃料喷嘴和多个轴向旋流器。 主混合器包括主旋流器和多个燃料喷射口。 该方法包括通过先导式混合器将燃料喷射到燃烧器中,使得燃料从先导式混合器轴向旋流器的下游排出,并且将从中心体延伸的唇缘引导到先导式混合器的流动到所述导向器下游的引燃火焰区域 混合器。

    Combustion chamber assembly, particularly for a vehicle heating device
    104.
    发明申请
    Combustion chamber assembly, particularly for a vehicle heating device 有权
    燃烧室组件,特别是用于车辆加热装置

    公开(公告)号:US20030138751A1

    公开(公告)日:2003-07-24

    申请号:US10339140

    申请日:2003-01-09

    发明人: Patric Schlecht

    IPC分类号: F23D003/00

    摘要: A combustion chamber assembly, in particular for a vehicle heating device, has combustion chamber housing in which a combustion chamber is bounded by a combustion chamber outer wall, the combustion chamber having a combustion chamber outlet aperture for the exit to a flame tube of exhaust gases produced during combustion, furthermore comprising a deflecting arrangement for deflecting at least a partial stream of the exhaust gases leaving the combustion chamber to flow along at least a partial region of the outer side of the combustion chamber outer wall facing away from the combustion chamber.

    摘要翻译: 燃烧室组件,特别是用于车辆加热装置的燃烧室组件具有燃烧室壳体,其中燃烧室由燃烧室外壁限定,燃烧室具有用于出口到废气管的火焰管的出口孔 还包括一个偏转装置,该偏转装置使至少一部分离开燃烧室的废气流沿燃烧室外壁的远离燃烧室的外侧的至少一部分区域流动。

    Dual-fuel nozzle for inhibiting carbon deposition onto combustor
surfaces in a gas turbine
    106.
    发明授权
    Dual-fuel nozzle for inhibiting carbon deposition onto combustor surfaces in a gas turbine 失效
    用于在燃气轮机中抑制碳沉积到燃烧器表面上的双燃料喷嘴

    公开(公告)号:US6123273A

    公开(公告)日:2000-09-26

    申请号:US941240

    申请日:1997-09-30

    摘要: The dual-fuel nozzle for a gas turbine and combustor includes a liquid fuel nozzle surrounded by a gas fuel nozzle. A converging sleeve surrounds the converging outer wall of the combined liquid fuel and gaseous nozzle to form a duct of decreasing cross-sectional area in a downstream direction whereby air flow through the duct accelerates toward the conical droplet spray pattern emerging from the liquid fuel nozzle. An inside swirler is located upstream of the liquid fuel tip to swirl the air flowing through the duct. An outer swirler is provided about the downstream end of the sleeve, likewise to swirl air. The accelerated swirling air flow through the duct and outer swirling air flow preclude impingement of oil spray droplets onto metal surfaces of the nozzle and hence prevent carbon deposition thereon which would otherwise be deleterious to the liquid fuel and gaseous nozzles.

    摘要翻译: 用于燃气轮机和燃烧器的双燃料喷嘴包括由气体燃料喷嘴包围的液体燃料喷嘴。 会聚套筒围绕组合的液体燃料和气体喷嘴的会聚外壁,以形成沿下游方向减小的横截面面积的管道,从而通过管道的空气流向从液体燃料喷嘴出现的锥形液滴喷雾图案加速。 内部旋流器位于液体燃料尖端的上游,以旋转流过管道的空气。 围绕套筒的下游端设置外旋流器,同样地旋转空气。 通过管道和外部旋转空气流的加速旋转空气流阻止油喷雾滴在喷嘴的金属表面上的冲击,并且因此防止碳沉积在否则对液体燃料和气体喷嘴将是有害的。

    Anti-coking dual-fuel nozzle for a gas turbine combustor
    107.
    发明授权
    Anti-coking dual-fuel nozzle for a gas turbine combustor 失效
    用于燃气轮机燃烧器的抗焦化双燃料喷嘴

    公开(公告)号:US5833141A

    公开(公告)日:1998-11-10

    申请号:US866366

    申请日:1997-05-30

    摘要: The dual-fuel nozzle includes a liquid fuel nozzle surrounded by an air/gas premixing cup. The cup has a base comprised of swirler vanes surrounding the outer tube of the liquid fuel nozzle. The tip of the liquid fuel nozzle extends to adjacent the open end of the premixing cup opposite the swirler vanes. The interior surface and outer surface of the premix cup and the tip of the liquid fuel nozzle, respectively, at the outer end of the cup are contoured, i.e., tapered complementarily inwardly to avoid recirculation of air in the annulus between the liquid fuel nozzle and the cup. Air recirculation is also prevented, thereby inhibiting flame holding adjacent the base of the cup by providing a smooth transition for air flow through the openings of the swirler at the base of the cup and into the annulus.

    摘要翻译: 双燃料喷嘴包括被空气/气体预混合杯包围的液体燃料喷嘴。 杯具有由围绕液体燃料喷嘴的外管的旋流器叶片组成的底座。 液体燃料喷嘴的尖端延伸到与旋流器叶片相对的预混合杯的开口端附近。 预混杯的内表面和外表面以及分别在杯外端的液体燃料喷嘴的顶端是轮廓形的,即,互补地向内渐缩,以避免液体燃料喷嘴与液体燃料喷嘴之间的空隙中的空气再循环 杯子。 还防止空气再循环,从而通过提供平滑过渡来阻止邻近杯底部的火焰保持气流通过杯底部的旋流器的开口进入环形空间。

    Dual fuel injector with purge and premix
    108.
    发明授权
    Dual fuel injector with purge and premix 失效
    双燃料喷射器,带吹扫和预混

    公开(公告)号:US5615555A

    公开(公告)日:1997-04-01

    申请号:US432136

    申请日:1995-05-09

    申请人: Theodors I. Mina

    发明人: Theodors I. Mina

    摘要: A fuel injector for a gas turbine conbustor, the injector operating on gas and liquid fuels selectively. The injector has a central liquid fuel duct and jets, an annular gas duct and gas jets, and an outer annular combustion air duct. Operation on the liquid fuel tends to cause combustion products to be ingested into the gas orifices so impeding efficient gas combustion. The invention provides apertures (17) between the outer air duct and the intermediate gas duct whereby during operation on liquid fuel air bleeds into the gas duct and purges the gas orifices. As an added advantage, in a transition from liquid fuel to gas, the gas pressure is increased to a point where the air bleed is reversed and gas bleeds into the air duct. The pre-mixed gas/air is then emitted from swirlers surrounding the ring of gas jets. More efficient gas combustion results.

    摘要翻译: PCT No.PCT / GB94 / 02219 Sec。 371日期1995年5月9日第 102(e)日期1995年5月9日PCT 1994年10月12日PCT PCT。 公开号WO95 / 11408 日期1995年04月27日用于燃气轮机燃烧器的燃料喷射器,喷射器选择性地对气体和液体燃料进行操作。 喷射器具有中央液体燃料管道和喷嘴,环形气体管道和气体射流以及外部环形燃烧空气管道。 对液体燃料的操作往往会导致燃烧产物被吸入气体孔中,从而阻碍有效的气体燃烧。 本发明提供了在外部空气管道和中间气体管道之间的孔口(17),由此在液体燃料空气运行期间,空气流入气体管道并清除气体孔口。 另外的优点是,在从液态燃料向气体的转变中,气体压力增加到空气流出反向并且气体流入空气管道的点。 然后将预混合气体/空气从气体喷嘴环周围的旋流器排出。 更有效的燃气燃烧效果。

    Injection nozzle tip cooling
    109.
    发明授权
    Injection nozzle tip cooling 失效
    注射嘴尖冷却

    公开(公告)号:US5288021A

    公开(公告)日:1994-02-22

    申请号:US923403

    申请日:1992-08-03

    摘要: Past systems have attempted to cool the combustor end or tip of fuel injection nozzles, however, such methods have failed to attain adequate cooling and life. The present system or structure for cooling a tip or combustion end of a fuel injection nozzle is accomplished with a twofold structure. First, a plurality of openings being acutely positioned in the combustor end about a plurality of base circles provide effective air-sweep cooling. Secondly, the convection cooling of a back face and a combustion face provides effective convection cooling. The two structures are combined to provide an effective, efficient cooling of the combustor end or tip. The combustor end of the fuel injection nozzle is maintained at a temperature low enough to prevent failure of the combustor end through oxidation, cracking and buckling and the air-sweep avoids carbon deposits on the combustor face.

    摘要翻译: 过去的系统已经尝试冷却燃料喷嘴的燃烧器端或尖端,然而,这些方法未能获得足够的冷却和寿命。 用于冷却燃料喷嘴的尖端或燃烧端的本系统或结构是用双重结构实现的。 首先,多个开口围绕多个基圆急剧地定位在燃烧器端部中,提供有效的空气吹扫冷却。 其次,背面和燃烧面的对流冷却提供有效的对流冷却。 两个结构被组合以提供对燃烧器端或尖端的有效,有效的冷却。 燃料喷射喷嘴的燃烧器端部保持在足够低的温度以防止燃烧器端部通过氧化,开裂和弯曲而发生故障,并且空气吹扫避免了燃烧器表面上的碳沉积。

    Burner construction
    110.
    发明授权

    公开(公告)号:US4374637A

    公开(公告)日:1983-02-22

    申请号:US956375

    申请日:1978-10-31

    IPC分类号: F23C7/00 F23D11/12 F23M9/00

    摘要: A burner having a burner body in which combustion air is injected in an air flow pattern which establishes a relatively stagnant air region positioned within the flow of combustion air. A pilot flame injector is positioned to generate a pilot flame extending into the stagnant air region. The pilot flame can, thus, be maintained during the operation of the burner because the stable air conditions within the stagnant air region minimize disruption of the pilot flame by the flow of combustion air.A method for maintaining a uniform pilot flame within a burner operating over a range of combustion air flow rates by introducing combustion air into the burner and providing the combustion air with a flow configuration that establishes a stagnant air zone within the burner that is relatively independent of the flow rate of the combustion air. The pilot flame is then positioned within the stagnant air zone.An injector for feeding finely divided fuel to a burner. The injector includes means to provide an annular passage through which air may flow at high velocity for discharge into a burner. Means are provided to feed fuel into the annular passage such that the fuel may be broken up into minute droplets by the air flow through the passage. Additionally the means to feed fuel are positioned to minimize contact between the fuel and the passage surfaces. Thus, the fuel may be broken up into minute droplets within the air flow stream with the finely divided fuel being discharged into a burner.