CN201270148Y - Sound insulation module on sound insulation apparatus of large noise equipment - Google Patents
Sound insulation module on sound insulation apparatus of large noise equipment Download PDFInfo
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- CN201270148Y CN201270148Y CNU2008201599195U CN200820159919U CN201270148Y CN 201270148 Y CN201270148 Y CN 201270148Y CN U2008201599195 U CNU2008201599195 U CN U2008201599195U CN 200820159919 U CN200820159919 U CN 200820159919U CN 201270148 Y CN201270148 Y CN 201270148Y
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Abstract
The utility model relates to a sound insulation module on a sound insulating device of a high-noise device, which is widely applied to noise abatement of high-noise devices for industries of electrical power, petrochemical engineering, metallurgy and the like. The sound insulation module is sequentially provided with a sound insulation plate, a damping vibration reduction layer and a sound-absorbing cotton plate from outside to inside, and is sequentially provided with a sound-absorbing steel plate with holes and a sound-absorbing cotton plate from inside to outside, and the circumambience of the module are provided with rib plates. The sound insulation module is characterized in that a layer of soundproof cotton felt and a rectangular sound-returning cavity are arranged between the two sound-absorbing cotton plates, wherein the layer of soundproof cotton felt is mutually uniformly distributed with gaps. The utility model enables detention time of sound to be delayed in the sound-returning cavity, enlarges contact areas among noise, the cotton plate and the cotton felt, enables more sound energy to be converted into heat energy inside the cotton plate and the cotton felt, and increases acoustic absorption coefficient of materials. Further, the sound reduction index of the sound insulation module can be over 40 decibels, which is 15-35% higher than that of similar products.
Description
Technical field
The utility model is a kind of sound insulation module on the sound insulation apparatus of large noise equipment, and it is widely used in the noise abatement of industry large noise equipments such as electric power, petrochemical industry, metallurgy.
Background technology
The intensity of noise in general, sound level is more quiet environment at 30～40 decibels, surpassing 50 decibels will influence sleep and have a rest, and can disturb people's talk more than 70 decibels, and the people is upset, energy is not concentrated.Long-term work and live in noisy environment more than 90 decibels can have a strong impact on hearing or cause the generation of other diseases.Noise has a strong impact on producing also can cause in addition, bring on a disaster to buildings, strong noise can make high-precision instrument and meter malfunctioning, when noise above 140 decibels, body of wall is shaken split, door and window destroys, even cigarette fontanel and old building thing are split collapse, steel construction produces " acoustic fatigue " and damages.
This shows the importance of noise abatement.Noise abatement generally has following several method: 1. control noise source and 2. adopt noise-abatement equipment 3. to adopt 4. afforestation of sound arrester.
The sound insulation module of sound arrester employing is in the market only filled single Sound-proof material in the module space, or adopts the layer 2-3 Sound-proof material to reach the sound insulation purpose, and the sound transmission loss of this type of sound insulation module is difficult to reach the requirement of related standards all less than 25 decibels.
Summary of the invention
Technical problem to be solved in the utility model: be to provide a kind of and can be assembled into sound arrester and noise pollution that can significantly reduce large noise equipment, make overall noise levels to drop to below 85 decibels, can satisfy a kind of sound insulation module on the sound insulation apparatus of large noise equipment that noise or noise abatement require.
As follows for solving the technical scheme that above technical matters adopts: the utility model is followed successively by sound panel, damping vibration attenuation layer, acoustical cotton plate inward from skin; Be followed successively by noise reduction steel plate with holes, acoustical cotton plate outward from nexine; Around the module is gusset, it is characterized in that: between two acoustical cotton plates, be provided with the Sound-proof material felt and the rectangle sound backflow cavity at the mutual uniform interval of one deck.
Because adopt above technical scheme, its effect is conspicuous:
1, simple in structure.
2, make sound edge in sound backflow cavity grow the hold-up time, strengthened the contact area between noise and cotton plate, the cotton felt, make more acoustic energy change into heat energy at cotton plate, cotton felt fibrous inside, improved the acoustical absorption coefficient of material, make soundproof effect very obvious, the sound transmission loss of sound insulation module can reach more than 40 decibels, be higher than the 15-35% of like product, has reached the purpose of sound-absorbing, noise reduction, vibration damping, sound insulation.
Description of drawings
Fig. 1, Fig. 3 are vertical section structure figure of the present utility model.
Fig. 2 is the plan structure figure of Fig. 1.
Among the figure: 1, noise reduction steel plate 2 with holes, acoustical cotton plate 3, Sound-proof material felt 4, acoustical cotton plate 5, sound backflow cavity 6, gusset 7, damping vibration attenuation layer 8, sound panel
Embodiment
With reference to Fig. 1, the utility model is a kind of sound insulation module on the sound insulation apparatus of large noise equipment, and this module is followed successively by sound panel 8, damping vibration attenuation layer 7, acoustical cotton plate 4 inward from skin; Be followed successively by noise reduction steel plate 1 with holes, acoustical cotton plate 2 outward from nexine; Around the module is gusset 6, and feature is: the Sound-proof material felt 3 and the rectangle sound backflow cavity 5 that are provided with the mutual uniform interval of one deck between two acoustical cotton plates.
The utility model mainly is divided into plane and two kinds of circular arcs (as Fig. 1 and Fig. 3).
The cotton plate of the closely knit starching that the acoustical cotton plate 2 usefulness soundproof effects of the utility model inboard are good is made, the loose cotton plate that acoustical cotton plate 4 usefulness sound-absorbing effects are good is made, this one deck is uniform and be partitioned into rectangle sound backflow cavity 5 with Sound-proof material felt 3 in the middle of the two acoustical cotton plates, is sound-absorption coefficient with the raising low frequency absorption.Through surveying: frequency is at 125-500Hz, and its sound-absorption coefficient is 0.75-0.80; Frequency is at 500-1000Hz, and its sound-absorption coefficient is 0.90-0.90; Frequency is at 1000-2000Hz, and its sound-absorption coefficient is 0.98-0.99.
The utility model at work, noise source is after noise reduction steel plate 1 abundant noise reduction with holes, just enter the inside of sound insulation module, by acoustical cotton plate 2, Sound-proof material felt 3, sound backflow cavity 5, acoustical cotton plate 4, make most of acoustic energy change into heat energy, carry out sound insulation and slow down vibration by damping vibration attenuation layer 7 again, finally thoroughly cut off noise and outwards propagate by sound panel 8.
Claims (1)
1, a kind of sound insulation module on the sound insulation apparatus of large noise equipment, this module is followed successively by sound panel (8), damping vibration attenuation layer (7), acoustical cotton plate (4) inward from skin; Be followed successively by noise reduction steel plate with holes (1), acoustical cotton plate (2) outward from nexine; Around the module is gusset (6), it is characterized in that: between acoustical cotton plate (4) and acoustical cotton plate (2), be provided with the Sound-proof material felt (3) and the rectangle sound backflow cavity (5) at the mutual uniform interval of one deck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201599195U CN201270148Y (en) | 2008-10-14 | 2008-10-14 | Sound insulation module on sound insulation apparatus of large noise equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201599195U CN201270148Y (en) | 2008-10-14 | 2008-10-14 | Sound insulation module on sound insulation apparatus of large noise equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201270148Y true CN201270148Y (en) | 2009-07-08 |
Family
ID=40842756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201599195U Expired - Fee Related CN201270148Y (en) | 2008-10-14 | 2008-10-14 | Sound insulation module on sound insulation apparatus of large noise equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201270148Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830271A (en) * | 2010-04-29 | 2010-09-15 | 哈尔滨工程大学 | Composite damping supporting plate structure for ships |
| CN105413331A (en) * | 2016-01-05 | 2016-03-23 | 青岛鑫恒德电器有限公司 | Composite air cleaner silencing device |
| CN113216555A (en) * | 2021-05-11 | 2021-08-06 | 深圳宏一建设集团有限公司 | Panel is used in laboratory |
-
2008
- 2008-10-14 CN CNU2008201599195U patent/CN201270148Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830271A (en) * | 2010-04-29 | 2010-09-15 | 哈尔滨工程大学 | Composite damping supporting plate structure for ships |
| CN105413331A (en) * | 2016-01-05 | 2016-03-23 | 青岛鑫恒德电器有限公司 | Composite air cleaner silencing device |
| CN105413331B (en) * | 2016-01-05 | 2018-01-02 | 青岛鑫恒德电器有限公司 | Combined air clearing machine silencing means |
| CN113216555A (en) * | 2021-05-11 | 2021-08-06 | 深圳宏一建设集团有限公司 | Panel is used in laboratory |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20111014 |