Ansaldo Energia Switzerland Ag

Justin Bosnoian

Peter Stuttaford

Nicolas Demougeot

Sumit Soni

Kevin B Powell

Chiluwata Lungu

Brian K Richardson

Paul Economo

Marc Paskin

Luiz Claudio Fernandes

David Schlamp

Brandon Hill

The present invention discloses a fuel nozzle assembly and method for axially staging fuel injection. The fuel nozzle assembly comprises a plurality of vanes connected to a core, with an annular ring connectedly surrounding the plurality of vanes. Fuel is directed through the core and then through the vanes and is injected at different axial planes generally perpendicular to an oncoming air stream to obtain a broad spectrum of gas residence time between the point of fuel injection and the flame.

Fuel nozzle for axially staged fuel injection

The present invention discloses a novel apparatus and way for directing a supply of compressed air into a fuel nozzle assembly for mixing with a fuel source. The apparatus comprises a fuel nozzle assembly having a plurality of coaxial tubes and radially-extending swirler vanes for directing a supply of fuel to a mixing tube. Compressed air is directed to flow in a primarily axial direction by passing through a hemispherically-shaped dome portion at an air inlet region of the fuel nozzle assembly. The hemispherically-shaped dome includes a plurality of openings for directing air into the fuel nozzle assembly in a direction having a radial and axial component.

Fuel nozzle with hemispherical dome air inlet

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Juno Beach, FL, United States of America

Justin Bosnoian