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Composite sound insulation structure and sound insulation cover

A sound insulation and sound absorption technology, applied in the direction of sound-producing equipment, instruments, layered products, etc., can solve the problems of insignificant noise reduction effect of noise reduction devices and disturbing people.

Pending Publication Date: 2021-03-26
国网内蒙古东部电力有限公司呼伦贝尔供电公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the noise reduction effect of the noise reduction device in the prior art is not obvious and still disturb the people, so as to provide a composite sound insulation structure and a sound insulation cover with an obvious noise reduction effect

Method used

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  • Composite sound insulation structure and sound insulation cover
  • Composite sound insulation structure and sound insulation cover
  • Composite sound insulation structure and sound insulation cover

Examples

Experimental program
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Effect test

Embodiment 1

[0044] see image 3 Shown, the present invention is made of fiberglass, metal rubber and sound-absorbing assembly 6. Among them, the fiberglass separator has a density of 1.4g / cm3 and a thickness of 1cm; the diameter of stainless steel metal fibers used in metal rubber is 0.05mm, and the rubber density is 1g / cm 3 , thickness 1cm; the sound-absorbing component 6 is aluminum silicate fiber, and the density of the first sound-absorbing layer 4 is 128kg / m 3 , the density of the second sound-absorbing layer 5 is 90kg / m 3 .

Embodiment 2

[0046] see image 3 Shown, the present invention is made of fiberglass, metal rubber and sound-absorbing assembly 6. Among them, fiberglass, density 2.1g / cm 3 , thickness 3cm; metal rubber used stainless steel metal fiber diameter 0.2mm, rubber density 3g / cm 3 , thickness 3cm; the sound-absorbing component 6 is glass wool fiber, and the density of the first sound-absorbing layer 4 is 60kg / m 3 , the density of the second sound-absorbing layer 5 is 30kg / m 3 .

Embodiment 3

[0048] see image 3 Shown, the present invention is made of fiberglass, metal rubber and sound-absorbing assembly 6. Among them, FRP has a density of 1.8g / cm3 and a thickness of 2cm; the diameter of stainless steel metal fibers used in metal rubber is 0.1mm, the rubber density is 2g / cm3, and the thickness is 2cm; the sound-absorbing component 6 is basalt fiber, and the density of the first sound-absorbing layer 4 is 80kg / m3, the density of the second sound-absorbing layer 5 is 40kg / m3.

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Abstract

The invention relates to the technical field of noise control equipment, in particular to a composite sound insulation structure, which comprises at least two groups of sound insulation assemblies, wherein each group of sound insulation assembly comprises two partition plates and a buffer layer between the two adjacent partition plates; and a sound absorption assembly arranged between the two sound insulation assemblies and is fixed through the fixing assembly. The invention further provides a sound insulation cover with the composite sound insulation structure. Compared with a noise reductiondevice in the prior art, the composite sound insulation structure has the advantages that due to the fact that the two sound insulation assemblies are arranged and jointly matched with the sound absorption assembly, noise can be effectively reduced, and the obvious noise reduction effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of noise control equipment, in particular to a composite sound insulation structure and a sound insulation cover. Background technique [0002] Transformers in cities undertake high-load power supply tasks, and the number is huge. Take distribution transformers as an example. Noise pollution is a serious problem, and its average sound pressure level is mainly distributed between 50-70dB(A). Due to the proximity to residential areas, the generated low-frequency noise is easy to spread and cause noise nuisance problems. [0003] At present, for the noise reduction of transformers, traditional auxiliary noise reduction methods are mostly used, and traditional measures such as sound insulation enclosures or sound barriers are adopted. However, these measures are expensive and difficult to construct. At the same time, the noise reduction effect is limited. [0004] In the prior art, a noise reduction device com...

Claims

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Application Information

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IPC IPC(8): G10K11/162G10K11/168B32B17/06
CPCB32B17/063B32B17/067G10K11/162G10K11/168
Inventor 曹春诚刘玉成罗永利宫世民赵彬王帆段炼邴龙朱家炜刘弋铭田一聂京凯何强
Owner 国网内蒙古东部电力有限公司呼伦贝尔供电公司