公开(公告)号：US20140123661A1

公开(公告)日：2014-05-08

申请号：US14072170

申请日：2013-11-05

Applicant: ALSTOM Technology Ltd

Inventor： Fernando BIAGIOLI ,  Madhavan Narasimhan POYYAPAKKAM ,  Riccardo CENNI ,  Khawar SYED

IPC: F23R3/14

CPC classification number: F23R3/14 ,  F23C7/004 ,  F23D2900/14021 ,  F23R3/286 ,  F23R3/36

Abstract: An axial swirler, in particular for premixing of oxidizer and fuel in gas turbines, includes a series of swirl vanes with a streamline cross-section. 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. The swirl vanes are arranged around a swirler axis, wherein the leading edges extend essentially in radial direction. Flow slots are formed between the suction side of each swirl vane and the pressure side of its nearest neighboring swirl vane. Furthermore, at least one swirl vane has a discharge flow angle between a tangent to its camber line at its trailing edge and the swirler axis that is monotonically increasing with increasing radial distance from the swirler axis. The invention also relates to a burner with such a swirler and a method of operating the burner.

Abstract translation: 特别是用于燃气轮机中氧化剂和燃料的预混合的轴向旋流器包括具有流线横截面的一系列旋流叶片。 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。 涡旋叶片围绕旋流器轴线布置，其中前缘基本上沿径向延伸。 流动槽形成在每个涡流叶片的吸力侧和其最近的相邻旋流叶片的压力侧之间。 此外，至少一个旋流叶片具有在其后缘处的其弯曲线的切线与旋流器轴线之间的排出流动角度，该旋流器轴线随着距旋流器轴线的径向距离的增加而单调增加。 本发明还涉及具有这种旋流器的燃烧器和操作燃烧器的方法。