Device for damping thermoacoustic oscillations in a combustion chamber with a variable resonator frequency

The damper includes at least one resonator (3). At least part of a wall (6) of the resonator can change position to set the resonator volume. The resonator is a Helmholtz resonator. The movable part of the wall is preferably provided with a thread. An independent claim is included for a gas turbine.

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Bibliographische Detailangaben
Hauptverfasser:	PRADE, BERND, BETHKE, SVEN, HUTH, MICHAEL, BUCHAL, TOBIAS, KIESOW, HANS-JÜRGEN, NIMPTSCH, HARALD
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FORCOMBUSTION CHAMBERS, e.g. FIREBRIDGES COMBUSTION APPARATUS COMBUSTION PROCESSES DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDEDFOR DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS INCOMBUSTION CHAMBERS GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS HEATING LIGHTING MECHANICAL ENGINEERING SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTIONAPPARATUS WEAPONS
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Beschreibung
Zusammenfassung:	The damper includes at least one resonator (3). At least part of a wall (6) of the resonator can change position to set the resonator volume. The resonator is a Helmholtz resonator. The movable part of the wall is preferably provided with a thread. An independent claim is included for a gas turbine.