HELMHOLTZ DAMPER FOR A GAS TURBINE AND GAS TURBINE WITH SUCH HELMHOLTZ DAMPER

A Helmholtz damper (HD3) for a gas turbine comprises a static resonator volume (17), which can be connected by means of a neck (16) to an inner space (15) of said gas turbine to damp pressure pulsations developing in said inner space (15), and further comprises means (18, 25) for changing said stati...

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Bibliographische Detailangaben
Hauptverfasser:	Bauer, Andreas, Szwedowicz, Jaroslaw Leszek, Grimm, Frank
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:	A Helmholtz damper (HD3) for a gas turbine comprises a static resonator volume (17), which can be connected by means of a neck (16) to an inner space (15) of said gas turbine to damp pressure pulsations developing in said inner space (15), and further comprises means (18, 25) for changing said static resonator volume (17) in order to match resonances of said Helmholtz damper (HD3) with said pressure pulsations. A simple and effective self-adjustment is achieved by said volume changing means comprising at least one first element (25), which is exposed to a varying temperature (T p ) within said gas turbine and undergoes a deformation, which depends on said varying temperature (T p ).