Apparatus and method for reducing noise

A kind of equipment and sound source technology, applied in the field of acoustic vibration, can solve the problems that the isolation screen is not suitable for underwater use, and the sleeve is not suitable for inflatable intervals, etc.

Active Publication Date: 2016-08-10
爱奇皮控股公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The screen is not suitable for underwater use as it is subject to large lateral forces such as tidal currents
[0007] JP05030233 appears to disclose a sleeve, but this sleeve is not suitable for maintaining an inflatable spacer underwater

Method used

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  • Apparatus and method for reducing noise
  • Apparatus and method for reducing noise
  • Apparatus and method for reducing noise

Examples

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Embodiment Construction

[0034] The drawing shows a piling device 1 by means of which pile elements 2 can be driven into the bottom 3 of a body of water 4 . An elongate tube 5 is arranged around the pile 2 . The elongated tube 5 comprises an outer wall 6 and an inner wall 7 . The outer wall 6 and the inner wall 7 are arranged concentrically with respect to each other and have an intermediate space 8 therebetween. In another non-illustrated embodiment, more tubes are arranged to be inserted into each other, thereby forming more intermediate spaces. This intermediate space 8 forms a pressure chamber which can be decompressed. To this end, the intermediate space 8 is sealed at the top by a first spacer 9 and at the bottom by a second spacer 10 . Said spacer not only seals the intermediate space 8 so that air cannot penetrate into it, but is also designed to insulate vibrations in order to prevent sound waves incident on the inner wall 7 from being transmitted to the outer wall 6 via a more or less rig...

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PUM

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Abstract

The present invention relates to a device for passively reducing acoustic vibrations in a liquid generated by a sound source arranged below the level of a body of water, the device comprising an elongated tube that can be arranged to surround the sound source , the tube includes an outer wall and an inner wall, wherein the tube is designed to maintain a predetermined required pressure in an intermediate space between the inner wall and the outer wall. In this case, the pressure is lower than the ambient pressure. Due to the reduced pressure, the acoustic vibrations will not be easily transmitted to the outside, thereby reducing the noise level in the area around the tube.

Description

technical field [0001] The invention relates to a device, an assembly and a method for passively reducing acoustic vibrations in a liquid, in particular water, generated by a sound source arranged below the liquid surface. Background technique [0002] During underwater operations, relatively high noise levels can be generated, which can be hazardous to animals or people in the vicinity. For example, if piling operations have to be carried out underwater, in which case pile pieces such as piles need to be driven into the ground by piling equipment located above the water surface, which can create extremely high noise levels underwater. Since the noise is generated underwater, the sound waves will be heard at a greater distance from the sound source than if the sound source were located above the water surface. In practice, it has been proven that while piling operations are being carried out, no other underwater operations can be carried out in the vicinity, ie within a rad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D13/00E02D27/52
CPCE02D7/14E02D27/52E02B2017/0078E02D13/00E02D7/02E02D13/005E02D17/00E02B17/00G10K11/16E02B17/0008G10K11/004E02B17/0013
Inventor B·C·荣格J·A·韦斯特比克
Owner 爱奇皮控股公司
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