Totally Primary Air Combustion Type of Burner

    公开(公告)号:US20180259181A1

    公开(公告)日:2018-09-13

    申请号:US15908954

    申请日:2018-03-01

    CPC classification number: F23D14/145 F23D14/74 F23D14/84

    Abstract: A totally primary air combustion type of burner has a combustion plate with a plurality of slit-shaped flame holes for ejecting therethrough air-fuel mixture for combustion. The combustion plate has a plurality of flame-hole rows having flame holes arranged in an X-axis (longitudinal) direction at a predetermined pitch in a Y-axis (lateral or shorter) direction. First flame-hole rows with position of flame holes and second flame-hole rows with position of flame holes with deviation by half a pitch in the Y-axis direction, are alternately arrayed in parallel with one another in the X-axis direction. A plurality of positions in the Y-axis direction of one of the first and the second flame-hole rows are provided with thinned portions (portions where no flame holes are formed) so that the pitch between the flame holes becomes two times the predetermined pitch.

    HIGH-STABILITY BURNERS
    6.
    发明申请
    HIGH-STABILITY BURNERS 审中-公开
    高稳定性燃烧器

    公开(公告)号:US20130302741A1

    公开(公告)日:2013-11-14

    申请号:US13989062

    申请日:2011-11-18

    Inventor: Antonio Acocella

    Abstract: Burners for gas boilers are provided. Such burners include those having a diffuser, suitable for diffusing pre-mixed fuel gases in a combustion chamber, the diffuser having a wall provided with a plurality of diffusion openings; and a distributor, suitable for distributing the combustion gases towards the diffuser, the distributer having a wall provided with a plurality of distribution openings; wherein the diffusion openings are positioned at a diffuser portion and the distribution openings are positioned at a distributor portion, in which the diffuser portion and the distributor portion are laterally offset to each other relative to the direction of the fuel gas flow through said distribution openings and diffusion openings.

    Abstract translation: 提供燃气锅炉燃烧器。 这种燃烧器包括具有扩散器的燃烧器,其适于在燃烧室中扩散预混燃料气体,扩散器具有设置有多个扩散开口的壁; 以及分配器,适于将燃烧气体分配到扩散器,分配器具有设置有多个分配开口的壁; 其中所述扩散开口位于扩散器部分处,并且所述分配开口位于分配器部分处,其中所述扩散器部分和所述分配器部分相对于通过所述分配开口的燃料气体流动的方向彼此横向偏移,并且 扩散开口

    Gas Turbine Premixer with Cratered Fuel Injection Sites
    7.
    发明申请
    Gas Turbine Premixer with Cratered Fuel Injection Sites 审中-公开
    燃气轮机预混合器与装载燃料喷射场地

    公开(公告)号:US20100011770A1

    公开(公告)日:2010-01-21

    申请号:US12176510

    申请日:2008-07-21

    CPC classification number: F23R3/14 F23D14/74 F23D14/82 F23R3/286

    Abstract: A premixer for a gas turbine combustor includes a swirler including a plurality of turning vanes that impart swirl velocity to airflow through the premixer, and at least one fuel injection site enabling fuel to mix with the airflow in the premixer. The fuel injection site terminates in a cratered hole. The cratered hole increases mixing efficiency and increases flashback/flameholding resistance.

    Abstract translation: 用于燃气轮机燃烧器的预混合器包括旋流器,其包括多个转动叶片,所述转动叶片赋予通过预混合器的气流涡旋速度,以及至少一个燃料喷射位置,使燃料与预混合器中的气流混合。 燃料喷射场地终止于一个装有打包的孔。 起吊孔提高了混合效率,增加了回火/阻焰性。

    Method for operating a reduced center burner in multi-burner combustor
    8.
    发明授权
    Method for operating a reduced center burner in multi-burner combustor 有权
    在多燃烧器燃烧器中操作减少的中心燃烧器的方法

    公开(公告)号:US07181916B2

    公开(公告)日:2007-02-27

    申请号:US11513204

    申请日:2006-08-31

    CPC classification number: F23R3/286 F23D14/74 F23D2900/14004 Y02E20/344

    Abstract: A method for combustion in a combustor in a gas turbine including: fueling the center fuel nozzle with a fuel-rich mixture of gaseous fuel and air and fueling the outer fuel nozzles with a fuel-lean mixture of fuel and air; igniting the fuel-rich mixture injected by the center fuel nozzle while the fuel-lean mixture injected by the outer combustors is insufficient to sustain ignition; stabilizing a flame on the center fuel nozzle using the bluff body and while the outer fuel nozzles inject the fuel-lean mixture; staging fuel to the outer nozzles by increasing a fuel ratio of the fuel-lean mixture, and after the outer nozzles sustain ignition, reducing fuel applied to the center nozzle.

    Abstract translation: 一种用于在燃气轮机中的燃烧器中的燃烧的方法,包括:用富燃料气体燃料和空气的混合物加燃料中心燃料喷嘴,并用燃料和空气的贫燃料混合物加燃料外燃料喷嘴; 点燃由中央燃料喷嘴喷射的富燃料混合物,而由外燃烧器喷射的燃料稀混合物不足以维持点火; 使用非流线形本体在中心燃料喷嘴上稳定火焰,同时外燃料喷嘴喷射贫油混合物; 通过增加贫燃料混合物的燃料比将燃料分配到外部喷嘴,并且在外部喷嘴持续着火之后,减少施加到中心喷嘴的燃料。

    Method for the reduction of combustion-driven oscillations in combustion systems and premixing burner for carrying out the method
    10.
    发明授权
    Method for the reduction of combustion-driven oscillations in combustion systems and premixing burner for carrying out the method 有权
    减少燃烧系统燃烧驱动振荡的方法和实施该方法的预混燃烧器

    公开(公告)号:US06918256B2

    公开(公告)日:2005-07-19

    申请号:US10358312

    申请日:2003-02-05

    Abstract: A method and a device are described for the controlled damping of combustion-driven oscillations in a turbomachine with a burner system providing at least one burner, into which is introduced, via at least one burner nozzle arranged centrally in the burner, fuel which is intermixed with combustion inflow air flowing into the burner, to form a fuel/air mixture which is ignited in a combustion chamber following the burner system. The invention is distinguished in that the fuel nozzle is designed in the form of a burner lance, at the lance end of which fuel discharge into the burner takes place, and in that the burner lance projects into the burner in the amount of at least one third of the axial burner length.

    Abstract translation: 描述了一种方法和装置,用于在具有提供至少一个燃烧器的燃烧器系统的涡轮机中被控制的阻尼的阻尼,所述燃烧器系统经由布置在燃烧器中心的至少一个燃烧器喷嘴引入燃烧器中,所述燃烧器喷嘴被混合 燃烧流入的空气流入燃烧器,以形成在燃烧器系统之后的燃烧室中点燃的燃料/空气混合物。 本发明的区别在于,燃料喷嘴被设计成燃烧器喷枪的形式,其喷枪的喷枪端部进入燃烧器,并且燃烧器喷枪以至少一个量的量投射到燃烧器中 轴向燃烧器长度的三分之一。

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