BURNER

摘要

The invention relates to a burner for a gas turbine comprising a burner housing (2). It is one object of the invention to provide a lean-rich partially premixed low emission burner for a gas turbine combustor that provides stable ignition and combustion process at all engine load conditions. According to the invention enclosed in that housing is a burner, at the upstream end of that burner (1) a pilot combustor (5) creating a flow of an unquenched concentration of radicals (32) and heat. Respectively provided is: a plurality of quarl sections (4a, 4b, 4c) surrounding the exit (6) of the pilot combustor (5), a main combustion room defined downstream said pilot combustor (5) and at least a first channel (10) defined as an annular space between an upstream quarl section (4a) and the closest downstream quarl section (4b) providing air (12) and fuel (14) to a main flame (7) in said combustion room.