Premix burner of the multi-cone type for a gas turbine

摘要

The invention relates to a premix burner of the multi-cone type for a gas turbine that includes a plurality of shells which are arranged around a central burner axis and are parts of a virtual, axially extending common cone, which opens in a downstream direction, whereby said parts are displaced perpendicular to said burner axis such that a tangential slot is defined between each pair of adjacent shells. The flame front of such a burner is stabilized by providing a virtual common cone with a cone angle, which varies in axial direction.

主权项

1. A premix burner for a gas turbine, said premix burner comprising:
a plurality of shells, which are arranged around a central burner axis of the premix burner and are parts of a virtual, axially extending common cone, which opens in a downstream direction, wherein said shells are oriented perpendicular to said central burner axis such that a tangential slot is defined between each pair of adjacent shells, and wherein said virtual common cone has a cone angle which varies in axial direction; each of the shells having an upstream end and a downstream end, the upstream end being twisted around the central burner axis by a twist angle relative to the downstream end.