Device and method for reducing noise
AssigneeIHC Holland IE B.V.
InventorsBoudewijn Casper Jung, Jan Albert Westerbeek
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Abstract
The present invention relates to a device for the passive reduction of the sound vibrations in a liquid resulting from a sound source arranged below the liquid level of a body of water, the device comprising an elongate tube which can be arranged over the sound source, the tube comprising an outer wall and inner wall, wherein the tube is designed to maintain a certain desired pressure in the intermediate space between the inner and outer wall. In this case, the pressure is reduced with respect to the ambient pressure. As a result of the reduced pressure, the sound vibrations will less readily travel to the outside and the noise level in the area around the tube is reduced.
Claims7
A device for the passive reduction of sound vibrations in a liquid resulting from a sound source arranged below the liquid level of a body of water, the device comprising:
- an elongate tube arrangeable over the sound source, the tube including an outer wall and an inner wall and an intermediate space in between, extending in the longitudinal direction of the tube, with the contents of the intermediate space between the inner and outer wall being formed completely by gaseous matter for reducing vibration transmission via the intermediate space to the body of water;
- and
- means for dispensing gas bubbles, wherein the means are designed to allow the gas bubbles to rise upward along the inner side of the inner wall of the tube.
Dependencies are inferred from the claim text.