Ansaldo Energia Switzerland Ag

Ansaldo Energia S.p.a.

Alessandro Scarpato

Bruno Schuermans

Mirko Ruben Bothien

Michael Thomas Maurer

Fernando Biagioli

Khawar Syed

Torsten Wind

Luis Tay Wo Chong Hilares

Christoph Gaupp

Frédéric Boudy

Giovanni Campa

Franklin Genin

Naresh Kumar Aluri

Luis Tay-Wo-Chong-Hilares

A mixer having a housing, a duct within the housing, a first and a second injector arranged to inject a fluid at a centre zone of the duct, a third and a fourth injector arranged to inject the fluid at a wall zone of the duct. The first/third injectors are at a distance D=v/2for odd integer multiples of it from the second/fourth injectors in the absence of an acoustic node between them, or at a distance D=v/for full wave length integer multiples of it in the presence of an acoustic node between them. Advantageously fis greater than f.

Mixer

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 to which a swirl number is assignable before entering a combustion zone in which the vortex flow of the air/fuel mixture is ignited to form a flame within a reverse flow zone caused by vortex breakdown. The swirl number perturbation driven by thermoacoustic oscillation inside the burner system is controlled by affecting the vortex flow actively before entering the combustion zone on basis of changing a flame transfer function assigned to the burner system with the proviso of minimizing pulsation amplitudes of the flame transfer function.

Method and device for flame stabilization in a burner system of a stationary combustion engine

Growing community of inventors

Wettingen, Switzerland

Alessandro Scarpato