-
公开(公告)号：US6141967A
公开(公告)日：2000-11-07
申请号：US5343
申请日：1998-01-09
申请人： Paul R. Angel , James M. Caldwell , Narendra D. Joshi , Steven Marakovits , Kelley A. Foresman , Steven G. Goebel , Richard E. Warren, Jr.
发明人： Paul R. Angel , James M. Caldwell , Narendra D. Joshi , Steven Marakovits , Kelley A. Foresman , Steven G. Goebel , Richard E. Warren, Jr.
摘要： An apparatus for premixing fuel and air prior to combustion in a gas turbine engine, including: a linear mixing duct having a circular cross-section defined by a wall; a centerbody located along a central axis of the mixing duct and extending substantially the full length of the mixing duct, the centerbody having a plurality of orifices therein to inject fuel into the mixing duct with an axial velocity component; a fuel supply in flow communication with the centerbody orifices; an outer annular swirler located adjacent an upstream end of the mixing duct and including a plurality of circumferentially spaced vanes oriented so as to swirl air flowing therethrough in a first direction; an inner annular swirler located adjacent the mixing duct upstream end and including a plurality of circumferentially spaced vanes, the vanes having an outer radial portion having a leading edge and a trailing edge oriented so as to swirl air flowing therethrough in a second direction opposite the first swirl direction by the outer annular swirler vanes and an inner radial portion with a leading edge and a trailing edge oriented so as to provide a boundary layer of air substantially along the centerbody; and, a hub separating the inner and outer annular swirlers to permit independent rotation of an air stream therethrough. The outer annular swirler may also include vanes having an inner radial portion with a leading edge and a trailing edge oriented so as to swirl the air flow therethrough and an outer radial portion having a leading edge and a trailing edge oriented so as to provide a boundary layer of air substantially along the mixing duct wall. High pressure air is injected from a compressor into the mixing duct through the inner and outer annular swirlers and fuel is injected into the mixing duct 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 the mixing duct into a combustor and ignited.
-
公开(公告)号：US5778676A
公开(公告)日：1998-07-14
申请号：US581817
申请日：1996-01-02
CPC分类号： F23R3/14 , F23D11/101 , F23D17/002 , F23R3/36 , F23C2900/07001 , F23D2209/10 , F23D2209/30
摘要： An air fuel mixer is disclosed having a mixing duct, a shroud surrounding the upstream end of the mixing duct in which a fuel manifold is provided in flow communication with a fuel supply and control means, a set of inner and outer counter-rotating swirlers adjacent the upstream end of the mixing duct for imparting swirl to an air stream, a hub separating the inner and outer annular swirlers to allow independent rotation of the air stream, and a centerbody located axially along and substantially the full length of the mixing duct. In order to inject one type of fuel into the mixing duct, fuel is supplied to the outer annular swirlers which include hollow vanes with internal cavities, wherein the internal cavities of the outer swirler vanes are in fluid communication with the fuel manifold in the shroud. The outer swirler vanes further include a plurality of fuel passages therethrough in flow communication with the internal cavities. A second fuel can be injected into the mixing duct by means of a plurality of orifices in the centerbody wall which are in flow communication with a fuel supply and control means. In this way, high pressure air from a compressor is injected into the mixing duct through the swirlers to form an intense shear region and fuel is injected into the mixing duct from the outer swirler vane passages and/or the centerbody orifices so that the high pressure air and the fuel is uniformly mixed therein so as to produce minimal formation of poullutants when a fuel/air mixture is exhausted out the downstream end of the mixing duct into the combustor and ignited.
摘要翻译： 公开了一种空气燃料混合器，其具有混合管道，围绕混合管道的上游端的护罩，其中设置有与燃料供应和控制装置流动连通的燃料歧管，一组相邻的内部和外部反向旋转旋流器 混合管道的上游端，用于向气流产生涡流;轮毂，分隔内外环形旋流器，以允许空气流的独立旋转;以及沿着混合管道的大致整个长度方向定位的中心体。 为了将一种类型的燃料喷射到混合管道中，燃料被供应到外部环形旋流器，其包括具有内部空腔的中空叶片，其中外部旋流器叶片的内部空腔与护罩中的燃料歧管流体连通。 外旋流器叶片还包括与内腔流动连通的多个通过其的燃料通道。 第二燃料可以通过与燃料供应和控制装置流动连通的中心体壁中的多个喷嘴喷射到混合管道中。 以这种方式，来自压缩机的高压空气通过旋流器喷射到混合管道中以形成强烈的剪切区域，并且燃料从外部旋流器叶片通道和/或中心体孔口喷射到混合管道中，使得高压 空气和燃料均匀地混合在一起，以便当燃料/空气混合物从混合管道的下游端排出到燃烧器中并点燃时，产生最小的起泡器的形成。
-
公开(公告)号：US5680766A
公开(公告)日：1997-10-28
申请号：US581818
申请日：1996-01-02
CPC分类号： F23R3/36 , F23C7/004 , F23D17/002 , F23R3/14 , F23C2900/07001 , F23D2209/30
摘要： An air fuel mixer is disclosed having a mixing duct, a shroud surrounding the upstream end of the mixing duct in which a fuel manifold is provided in flow communication with a fuel supply and control means, a set of inner and outer counter-rotating swirlers adjacent the upstream end of the mixing duct for imparting swirl to an air stream, a hub separating the inner and outer annular swirlers to allow independent rotation of the air stream, and a centerbody located axially along and substantially the full length of the mixing duct. In order to inject one type of fuel into the mixing duct, fuel is supplied to the outer annular swirlers which include hollow vanes with internal cavities, wherein the internal cavities of the outer swirler vanes are in fluid communication with the fuel manifold in the shroud. The outer swirler vanes further include a plurality of fuel passages therethrough in flow communication with the internal cavities. A second fuel can be injected into the mixing duct by means of a plurality of orifices in the centerbody wall which are in flow communication with a fuel supply and control means. In this way, high pressure air from a compressor is injected into the mixing duct through the swirlers to form an intense shear region and fuel is injected into the mixing duct from the outer swirler vane passages and/or the centerbody orifices so that the high pressure air and the fuel is uniformly mixed therein so as to produce minimal formation of pollutants when a fuel/air mixture is exhausted out the downstream end of the mixing duct into the combustor and ignited.
-
公开(公告)号：US5675971A
公开(公告)日：1997-10-14
申请号：US581813
申请日：1996-01-02
CPC分类号： F23R3/286 , F23D2900/14004
摘要： An air fuel mixer is disclosed having a mixing duct, a shroud surrounding the upstream end of the mixing duct in which a fuel manifold is provided in flow communication with a fuel supply and control means, a set of inner and outer counter-rotating swirlers adjacent the upstream end of the mixing duct for imparting swirl to an air stream, a hub separating the inner and outer annular swirlers to allow independent rotation of the air stream, and a centerbody located axially along and substantially the full length of the mixing duct. In order to inject one type of fuel into the mixing duct, fuel is supplied to the outer annular swirlers which include hollow vanes with internal cavities, wherein the internal cavities of the outer swirler vanes are in fluid communication with the fuel manifold in the shroud. The outer swirler vanes further include a plurality of fuel passages therethrough in flow communication with the internal cavities. A second fuel can be injected into the mixing duct by means of a plurality of orifices in the centerbody wall which are in flow communication with a fuel supply and control means. In this way, high pressure air from a compressor is injected into the mixing duct through the swirlers to form an intense shear region and fuel is injected into the mixing duct from the outer swirler vane passages and/or the centerbody orifices so that the high pressure air and the fuel is uniformly mixed therein so as to produce minimal formation of pollutants when a fuel/air mixture is exhausted out the downstream end of the mixing duct into the combustor and ignited.
摘要翻译： 公开了一种空气燃料混合器，其具有混合管道，围绕混合管道的上游端的护罩，其中设置有与燃料供应和控制装置流动连通的燃料歧管，一组相邻的内部和外部反向旋转旋流器 混合管道的上游端，用于向气流产生涡流;轮毂，分隔内外环形旋流器，以允许空气流的独立旋转;以及沿着混合管道的大致整个长度方向定位的中心体。 为了将一种类型的燃料喷射到混合管道中，燃料被供应到外部环形旋流器，其包括具有内部空腔的中空叶片，其中外部旋流器叶片的内部空腔与护罩中的燃料歧管流体连通。 外旋流器叶片还包括与内腔流动连通的多个通过其的燃料通道。 第二燃料可以通过与燃料供应和控制装置流动连通的中心体壁中的多个喷嘴喷射到混合管道中。 以这种方式，来自压缩机的高压空气通过旋流器喷射到混合管道中以形成强烈的剪切区域，并且燃料从外部旋流器叶片通道和/或中心体孔口喷射到混合管道中，使得高压 空气和燃料均匀地混合在一起，以便当燃料/空气混合物从混合管道的下游端排出到燃烧器中并点燃时，产生最小的污染物形成。
-
公开(公告)号：US06758045B2
公开(公告)日：2004-07-06
申请号：US10233356
申请日：2002-08-30
IPC分类号： F02C314
CPC分类号： F23R3/002 , F23R3/346 , F23R3/50 , F23R2900/00005
摘要： A method enables a gas turbine engine multi-domed combustor including an outer liner and an inner liner that define a combustion chamber therebetween to be assembled. The method comprises coupling a first dome including a heat shield that includes an annular endbody that extends a first distance axially from the heat shield to the combustor outer liner, and coupling a second dome including a heat shield that includes an annular endbody that extends a second distance axially from the heat shield to the first dome, such that the second dome is radially aligned with respect to the first dome, and wherein the second dome second distance is less than the first dome first distance.
摘要翻译： 一种方法能够使燃气涡轮发动机多圆顶燃烧器包括在其间限定燃烧室以组装的外衬套和内衬套。 该方法包括联接包括隔热罩的第一穹顶，所述隔热罩包括环形端体，所述环形端体从所述隔热罩轴向延伸到所述燃烧器外衬套，并且连接包括隔热罩的第二穹顶，所述隔热罩包括环形端体， 从隔热板轴向延伸到第一圆顶，使得第二圆顶相对于第一圆顶径向对准，并且其中第二圆顶第二距离小于第一圆顶第一距离。
-
-
-
-
搜索结果
5 条记录 (耗时 0.04 秒)
