Alstom Technology Limited

General Electric Technology Gmbh

Dariusz Nowak

Fulvio Magni

Frank Grimm

Martin Andrea Von Planta

Mischa Schaerer

Tomasz Dobski

Rafal Slefarski

Adrian Schneider

A Helmholtz damper for a combustor of a gas turbine includes first and second damping volumes. The combustor has a combustion chamber disposed in a housing and closed off by a front plate at which a plurality of burners are exchangeably fastened. The burners are supplied with fuel via fuel lances which extend from outside the housing through a bushing of the housing to the associated burner. The first damping volume has a first end and a second end, the first end of the first damping volume being configured to attach a connecting passage extending to a front panel such that the Helmholtz damper is connectable with the front plate of the combustion chamber in place of one of the burners. The second damping volume has a first end and a second end and is arranged in series with the first damping volume along an axis of the Helmholtz damper with the first end of the second damping volume being detachably connected to the second end of the first damping volume so as to form a combined larger damping volume. The second end of the second damping volume is configured to attach a connecting tube extending from the second damping volume and through the bushing in place of a respective one of the fuel lances.

Helmholtz damper for a combustor of a gas turbine and a method for installing the helmholtz damper

An injection nozzle (), especially for injecting liquid fuel, preferably crude oil, into the combustion chamber of a gas turbine, includes an inner chamber () which extends along a nozzle axis (), conically tapers to a concentric nozzle orifice (), and to which the medium which is to be injected is fed from outside through a plurality of inlet ports () which are arranged in a distributed manner around the nozzle axis (). The inlet ports () are oriented perpendicularly to the nozzle axis () and each lead tangentially into the inner chamber (). With such an injection nozzle, an improved spray cone is achieved by the fact that a pin (), which extends in the axial direction, is concentrically arranged in the inner chamber () and passes through the region of the mouths of the inlet ports () and extends right into the nozzle orifice ().

Injection nozzle having constant diameter pin and method for operating the injection nozzle

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Untersiggenthal, Switzerland

Dariusz Nowak