Multi-layered sound attenuation mechanism
First Claim
1. A sound attenuation mechanism comprising:
- a first corrugated substrate layer; and
a second corrugated substrate layer adjacent said first corrugated substrate layer, each of the layers defining concave portions separated by flat regions therebetween, the layers welded together at their respective flat regions to form a plurality of acoustic attenuation channels between the concave portions thereof, wherein at least one of the first or second corrugated substrate layers comprises a plurality of inlets aligned with a plurality of concave surfaces of said first or second corrugated substrate layers, the inlets and the concave surfaces are aligned such that the attenuation channels are substantially perpendicular to the sound being attenuated.
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Accused Products
Abstract
A sound attenuation mechanism made up of multiple substrate layers, including corrugated layers. The use of corrugation provides an inexpensive and manner of forming a plurality of highly effective acoustic attenuation channels throughout the mechanism. The multi-layered mechanism may be provided in a variety of modular forms and sizes which may be combined to form a low-cost, highly effective attenuation housing. For example, such a housing may be utilized to contain otherwise noisy large scale oilfield equipment such as coiled tubing engines. Additionally, where drainage from the housing is sought, a spiraled attenuation channel may be employed such that the effectiveness of the attenuation provided by the housing is not sacrificed.
43 Citations
23 Claims
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1. A sound attenuation mechanism comprising:
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a first corrugated substrate layer; and a second corrugated substrate layer adjacent said first corrugated substrate layer, each of the layers defining concave portions separated by flat regions therebetween, the layers welded together at their respective flat regions to form a plurality of acoustic attenuation channels between the concave portions thereof, wherein at least one of the first or second corrugated substrate layers comprises a plurality of inlets aligned with a plurality of concave surfaces of said first or second corrugated substrate layers, the inlets and the concave surfaces are aligned such that the attenuation channels are substantially perpendicular to the sound being attenuated. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An assembly comprising:
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noise generating equipment; and a sound attenuation housing containing the noise generating equipment, said housing having a wall of encased corrugated substrate layers, wherein at least two of the corrugated substrate layers welded together to form a plurality of acoustic attenuation channels therebetween, the channels filled with a fibrous material and oriented perpendicularly to the noise generating equipment. - View Dependent Claims (9, 10, 11)
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12. A sound attenuation housing comprising:
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a wall of substrate layers with a corrugation forming a plurality of acoustic attenuation channels between said layers; and an attenuation drain defining a channel therein, the channel comprising a continuous chanelled spiraling therein to attenuate noise within the drain, the drain running from said wall for allowing fluid to leave the housing. - View Dependent Claims (13, 14)
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15. A method comprising:
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corrugating a first substrate layer, the first layer defining concave portions separated by flat regions therebetween; corrugating a second substrate layer, the second layer defining concave portions separated by flat regions therebetween; welding the second substrate layer to the first substrate layer at their respective flat regions and at interfaces of the concave portions and forming a plurality of acoustic attenuation channels therebetween; and employing the coupled layers for attenuating a noise of a noise generating equipment by orienting the channels substantially perpendicular to the noise of the noise generating equipment. - View Dependent Claims (16, 17, 18, 19)
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20. A method of reducing noise of an oilfield operation, comprising:
using a sound attenuation mechanism, comprising; a first corrugated substrate layer; and a second corrugated substrate layer adjacent said first corrugated substrate layer, each of the layers defining concave portions separated by flat regions therebetween, the layers welded together at their respective flat regions to form a plurality of acoustic attenuation channels between the concave portions thereof; wherein using comprises orienting the channels substantially perpendicular to the sound being attenuated. - View Dependent Claims (21, 22, 23)
Specification