公开(公告)号：US20160010856A1

公开(公告)日：2016-01-14

申请号：US14793775

申请日：2015-07-08

Applicant: ALSTOM Technology Ltd

Inventor： Fernando BIAGIOLI ,  Madhavan Narasimhan POYYAPAKKAM ,  Stefan WYSOCKI

IPC: F23D14/02 ,  F23R3/14

CPC classification number: F23D14/02 ,  F23C2900/07001 ,  F23D14/24 ,  F23R3/14

Abstract: The present invention relates to an axial swirler, in particular for premixing of oxidizer and fuel in gas turbines. The axial swirler for a gas turbine burner includes a plurality of swirl vanes with a streamline cross-section being arranged around a swirler axis and extending in radial direction between an inner radius Rmin and an outer radius Rmax. Each swirl vane has a leading edge, a trailing edge, and a suction side and a pressure side extending each between the leading and trailing edges. A discharge flow angle a between a tangent to the swirl vane camber line at its trailing edge and the swirler axis is first function of radial distance R from the swirler axis. A position of maximum camber of the swirl vane is second function of radial distance R from the swirler axis. At least one swirl vane of the first and second functions include each a respective local maximum and local minimum values along said radial distance from Rmin to Rmax. The invention also relates to a burner with such a swirler.

Abstract translation: 本发明涉及一种轴向旋流器，特别是用于燃气轮机中氧化剂和燃料的预混合。 用于燃气涡轮燃烧器的轴向旋流器包括多个旋流叶片，其流线横截面围绕旋流器轴线布置并且在径向方向上在内半径Rmin和外半径Rmax之间延伸。 每个旋流叶片具有前缘，后缘以及每个在前缘和后缘之间延伸的吸力侧和压力侧。 在其后缘处的旋流叶片弯曲线的切线与旋流器轴线之间的排出流量角度α是来自旋流器轴线的径向距离R的函数。 涡流叶片的最大弯度的位置是来自旋流器轴线的径向距离R的第二函数。 第一和第二功能的至少一个旋流叶片包括沿着从Rmin到Rmax的所述径向距离的各自的局部最大值和局部最小值。 本发明还涉及具有这种旋流器的燃烧器。