METHOD AND DEVICE FOR FLAME STABILIZATION IN A BURNER SYSTEM OF A STATIONARY COMBUSTION ENGINE

摘要

The invention refers to a method and a device for flame stabilization in a burner system of a stationary combustion engine, preferably a stationary gas turbine, in which a flow of an air/fuel mixture is produced and being swirled to form a vortex flow (9) to which a swirl number is assignable before entering a combustion zone in which the vortex flow (9) of the air/fuel mixture is ignited to form a flame (10) within a reverse flow zone (CRZ) caused by vortex breakdown The invention is characterized in that swirl number perturbation driven by thermoacoustic oscillation inside the burner system is controlled by affecting the vortex flow (9) actively before entering the combustion zone on basis of changing a flame transfer function (FTF) assigned to the burner system with the proviso of minimizing pulsation amplitudes of the flame transfer function (FTF).