Apparatus for damping acoustic vibrations in a combustor
First Claim
1. Apparatus for damping acoustic vibrations in a combustor (1), comprising a Helmholtz resonator (4) having a resonance volume (3) and a connecting channel (2) through which the combustor (1) can be connected with the resonance volume (3), characterized in that the Helmholtz resonator (4) contains a hollow body (6) with a volume that can be changed by adding or draining a fluid via a supply line (5) or is located adjacent to such a hollow body in such a way that the resonance volume (3) of the Helmholtz resonator (4) is changed when the volume of the hollow body (6) is changed.
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Accused Products
Abstract
The present invention relates to an apparatus for damping acoustic vibrations in a combustor as well as a corresponding combustor arrangement with the apparatus. The apparatus comprises a Helmholtz resonator (4) that can be connected via a connecting channel (2) with a combustor (1). The Helmholtz resonator (4) contains a hollow body (6) the volume of which can be changed by adding or draining a fluid via a supply line (5), or is located adjacent to such a hollow body in such a way that the resonance volume (3) of the Helmholtz resonator (4) is changed when the volume of the hollow body (6) is changed. This apparatus makes it possible to adjust the resonance frequency of a Helmholtz resonator arranged inside a pressure container in accordance with the respective current operating point of the combustor to be damped, without having to pass movable components through the pressure container.
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Citations
8 Claims
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1. Apparatus for damping acoustic vibrations in a combustor (1), comprising a Helmholtz resonator (4) having a resonance volume (3) and a connecting channel (2) through which the combustor (1) can be connected with the resonance volume (3),
characterized in that the Helmholtz resonator (4) contains a hollow body (6) with a volume that can be changed by adding or draining a fluid via a supply line (5) or is located adjacent to such a hollow body in such a way that the resonance volume (3) of the Helmholtz resonator (4) is changed when the volume of the hollow body (6) is changed.
Specification