CN202370112U - Strong sound absorption wide frequency composite structure - Google Patents
Strong sound absorption wide frequency composite structure Download PDFInfo
- Publication number
- CN202370112U CN202370112U CN2011204762932U CN201120476293U CN202370112U CN 202370112 U CN202370112 U CN 202370112U CN 2011204762932 U CN2011204762932 U CN 2011204762932U CN 201120476293 U CN201120476293 U CN 201120476293U CN 202370112 U CN202370112 U CN 202370112U
- Authority
- CN
- China
- Prior art keywords
- sound absorption
- glass wool
- strong
- sound
- composite structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Building Environments (AREA)
Abstract
The utility model discloses a strong sound absorption wide frequency composite structure, and relates to the technical field of acoustic noise treatment and environmental protection. For solving the technical problems, the utility model provides a sound absorption wall composite structure with strong low frequency sound absorption performance and strong intermediate and high frequency sound absorption performance. The low-frequency strong sound absorption wide frequency composite structure comprises a sound absorption panel and a glass wool interlayer, wherein the density of the glass wool interlayer is improved from the sound absorption panel to the inner part. Through the wide frequency band sound absorption composite structure with strong low frequency sound absorption performance, plant equipment noise, particularly low frequency noise is effectively reduced, the sound environment is improved, and human auditory subjective annoyance caused by the low frequency noise is remarkably reduced. The sound absorption composite structure has the advantages of simple structure, convenience in disassembly and assembly, good sound absorption effect, excellent anticorrosive effect and the like, is easy to clean, solves the problem of flying of glass wool fibers, and is applied to noise reduction of most workshops, machine rooms and transformer substations.
Description
Technical field
The utility model relates to acoustic noise to be administered and environmental protection technical field, particularly is applicable to the sound absorption reduction of low-frequency noise strong environmental, is applicable to the strong sound absorption construction under medium-high frequency, the simultaneous broadband noise environment of low frequency simultaneously.
Background technology
Many places such as large-scale power station, transformer station, factory building etc. need because of production, need be at the indoor equipment such as a lot of transformers, blower fan, freezing unit that are furnished with.Usually these equipment can produce noise when operation, generally at 70～90dB, environment are made a big impact, and simultaneously the staff are caused able-bodied infringement, and serious possibly cause impaired hearing.
The main method that factory building and noise of equipment are administered comprises absorbing wall, sound absorption furred ceiling, sound insulation door and window etc., and absorbing wall is to reduce the most frequently used method of noise of equipment.Present domestic factory building and noise of equipment are administered the following two kinds of form of structure of the general employing of absorbing wall in the engineering:
1, " glass wool/perforated plate structure " of band glass wool interlayer, wherein glass wool is the good sound absorption material of sound absorbing capabilities, in medium-high frequency good sound absorbing capabilities is arranged, in the glass wool unit weight filled out be 32～48kg/m
3, perforated plate is made armour layer and is used, with the distortion that prevents glass wool with fly upward; The perforated plate structure also is a resonance sound-absorbing structure simultaneously; Therefore with respect to the glass wool of stack pile, perforated plate/glass wool structure low frequency slightly improves, but receives the effect of blocking of perforated plate; Medium-high frequency significantly descends, and influences whole sound absorbing capabilities.The also unsuitable cleaning of this structure, fiber are prone to produce flies upward, and sound absorbing capabilities is subject to the ambient humidity influence.
2, sound absorption material is not filled out in the inside of " double-deck perforated microstructure "; Be merely cavity, advantage is not have fibre deformation and the problem of flying upward, but sound sucting band is narrower; Usually at medium and low frequency sound absorbing capabilities is arranged; For low frequency absorption, double-deck perforated microstructure cavity depth requires very big, and the machining accuracy of microperforated panel structure is prone to the actual sound absorbing capabilities of influence.
Though more than two kinds of results low frequency is had acoustically effective, strong inadequately, especially not good enough to its acoustically effective of the noise below the 200Hz.
Summary of the invention
To the deficiency of prior art, the utility model technical problem to be solved provides a kind of very strong medium-high frequency sound absorbing capabilities that not only has, and has the absorbing wall or the furred ceiling composite construction of very strong low frequency absorption performance simultaneously.
The utility model solves low frequency that its technical problem the adopted wideband composite construction that absorbs sound by force, comprises sound absorption panel and glass wool interlayer, and the density of described glass wool interlayer is inwardly big from little change from the panel that absorbs sound.
Described sound absorption panel is an aluminum fiberboard.
Said aluminum fiberboard thickness is 1～2mm, and surface density is 400～2000g/m
2
Described glass wool interlayer is divided at least 3 layers, becomes big successively from the glass wool interlayer density near the internal layer of the outer inwards of sound absorption panel.
The density of described glass wool interlayer inwardly becomes big from little gradually from the sound absorption panel.
Described glass wool thickness of interlayer is 50～150mm, and density range is 20～100kg/m
3
On the described sound absorption panel fixed body is installed.
Described fixed body is metope keel or sound barrier.
Adopt the low frequency of the utility model to absorb sound by force broadband sound absorption composite construction that the wideband composite construction has very strong low frequency absorption performance; With effective reduction plant and equipment noise; Especially low-frequency noise is improved acoustic environment, significantly reduces the subjective worry of people's ear that low-frequency noise causes.Advantages such as this sound absorption composite construction has simple in structure, and easy accessibility is easy to clean, and acoustically effective is good, and antiseptic effect is superior, and solved the problem that microglass fiber flies upward, be applicable to most factory buildings, machine room, transformer station's noise reduction.
Description of drawings
Fig. 1 is the structural representation of the utility model the 1st embodiment;
Fig. 2 is the structural representation of the utility model the 2nd, 3 embodiment;
Fig. 3 is embodiment 2 and the sound absorption coefficient curve map of using sound absorption construction at present always;
Fig. 4 is a noise of transformer spectral characteristic curve among the embodiment 2;
Fig. 5 is embodiment 3 and the sound absorption coefficient curve map of using sound absorption construction at present always;
Fig. 6 is the spectral characteristics of noise curve of reactor among the embodiment 3.
Reference numeral among the figure: 1-body of wall, the 2-panel that absorbs sound, 3-glass wool interlayer, 4-fixed body.
The specific embodiment
Through embodiment the utility model characteristic and other correlated characteristic are done further explain below in conjunction with accompanying drawing.
The low frequency of the utility model wideband composite construction that absorbs sound by force comprises sound absorption panel 2 and glass wool interlayer 3, and the density of glass wool interlayer is inwardly big from little change from the sound absorption panel, and promptly the glass wool interlayer near the sound absorption panel be a skin, and near body of wall 1 is internal layer.In the different structure degree of depth, adopt the glass wool of the ascending variation of unit weight, make that properties of materials impedance from outside to inside progressively increases, thus when making sound wave incident the overwhelming majority to penetrate sound absorption material inner and be absorbed.
Though the glass wool good sound absorption material that is sound absorbing capabilities and since glass wool interlayer easy deformation with fly upward, traditional perforated plate is as the sound absorption panel; The micropore that glass wool can see through on the perforated plate causes microglass fiber to fly upward, so the sound absorption panel 2 employing aluminum fiberboards of this patent, because aluminum fiber is interweaved; Aluminum fiberboard can be regarded the very little ultramicropore structure in aperture as; This structure increases with respect to common perforated plate acoustic resistance, and sound sucting band is widened, and is superior to common perforated plate structure at the sound absorbing capabilities of low frequency; Sound sucting band also significantly is wider than common perforated plate structure, and it also has well antirust, anticorrosion, moistureproof, flameproof effect.In addition, because the penetrable aluminum fiberboard of crossing of medium-high frequency sound wave incides glass wool, the sound absorbing capabilities of glass wool is played a role.The felt that this aluminum fiberboard can be pressed into for the aluminum filament of 7 μ m diameters.
Detect with on-the-spot through experiment, the parameter of aluminum fiberboard and glass wool interlayer is chosen as, aluminum fiberboard thickness is that 1～2mm, surface density are 400～2000g/m
2, the glass wool thickness of interlayer is that 50～150mm, density range are 20～100kg/m
3
As shown in Figure 1, will adopt 2mm thick with the metope keel as fixed body 4, surface density is 550g/m
2The sound absorption panel 2 of aluminum fiberboard be fixed on the body of wall 1; Between sound absorption panel 2 and body of wall 1, glass wool interlayer 3 is arranged; Glass wool interlayer 3 is set to three layers, and each layer glass wool interlayer 3 density increase successively from outside to inside from sound absorption panel 2 to the glass wool interlayer 3 the body of wall 1, and branch is 20kg/m
3, 64kg/m
3, 100kg/m
3
If, have glass wool interlayer 3 can also be arranged to the more number of plies between sound absorption panel 2 and the body of wall 1, and also be to increase successively to interior each layer glass wool interlayer 3 density outward in order to reach better acoustically effective.
Present embodiment is an example with the sound absorption reduction of certain transforming plant main transformer chamber, and this transformer chamber's noise of transformer level is 86dB (A), and low-frequency component is strong, and its spectral characteristics of noise curve is referring to Fig. 4.
As shown in Figure 2, will adopt 1mm thick with metope keel or sound barrier as fixed body 4, surface density is 1800g/m
2The sound absorption panel 2 of aluminum fiberboard be fixed on the body of wall 1, between sound absorption panel 2 and body of wall 1, the thick glass wool interlayer 3 of 60mm is arranged, from absorb sound panel 2 to the glass wool interlayer 3 the body of wall 1 from outside to inside glass wool interlayer 3 density from 20～100kg/m
3Increase gradually.Present embodiment is compared with embodiment 1; Because the density of glass wool interlayer 3 is to increase gradually; Change relatively when making properties of materials impedance from outside to inside progressively increase not remarkable, thereby when making sound wave incident the overwhelming majority to penetrate sound absorption material inner and be absorbed, seldom on the interface because impedance suddenlys change is reflected; Further widen sound sucting band, improved sound absorbing capabilities.
As a comparison, selected of the comparison of 3 kinds of common sound absorption constructions simultaneously as the sound absorption composite construction of present embodiment.Concrete structure and parameter is following:
1, glass wool/Pierced Aluminum Plank structure: thickness 0.8mm, perforated percentage are not less than 20% Pierced Aluminum Plank+thickness 60mm, 80kg/m
3Glass wool.
2, glass wool/perforation glass epoxy structure: thickness 3mm, perforated percentage are not less than 12% perforation glass fiber reinforced plastic+thickness 50mm, unit weight 32kg/m
3Centrifugally glass-wool+25mm cavity.
3, double-deck perforated microstructure: thickness 0.8mm, aperture 0.8mm, pitch-row 7mm first floor micropunch (steel) plate+60mm cavity+aperture 0.8mm, plate thickness 0.8mm, pitch-row 9mm second layer microperforated panel+40mm cavity.
Referring to Fig. 3, be the composite construction in the present embodiment and the sound absorption coefficient curve map of three kinds of sound absorption constructions in addition shown in the figure.From figure, can obviously find out, the composite construction of present embodiment and other three kinds of sound absorption constructions commonly used, thickness be no more than or suitable prerequisite under, low frequency, intermediate frequency, high frequency sound absorbing capabilities all obviously are superior to glass wool/perforated plate structure and double-deck perforated microstructure.The composite construction of present embodiment is best at the acoustically effective of 400～1000Hz.
Present embodiment is an example with the sound absorption reduction of certain transformer station reactance chamber, describes in detail for absorb sound the by force concrete scheme of composite construction of lightweight.The level of noise of this reactance chamber reactor is 76dB (A), and low frequency is strong, and its spectral characteristics of noise curve is referring to Fig. 6.
As shown in Figure 2, the structure of present embodiment and embodiment 2 are roughly the same, and difference is to adopt 1.35mm thick, and surface density is 400g/m
2The sound absorption panel 2 of aluminum fiberboard, glass wool layer 3 thickness are 150mm, glass wool interlayer 3 density are from 24～64kg/m from outside to inside
3Asymptotic increase.
As a comparison, present embodiment has selected common 3 kinds of sound absorption constructions as absorb sound the by force reference of composite construction of present embodiment lightweight equally.Concrete structure and parameter is following:
1, glass wool/perforated plate structure: thickness 0.8mm perforated percentage is not less than 20% Pierced Aluminum Plank+thickness 150mm, 48kg/m
3Glass wool.
2, glass wool/perforation glass epoxy structure: thickness 3mm, perforated percentage are not less than 12% perforation glass fiber reinforced plastic+thickness 100mm, unit weight 32kg/m
3Centrifugally glass-wool+50mm cavity.
3, double-deck perforated microstructure: thickness 0.8mm, aperture 0.8mm, pitch-row 9mm first floor micropunch (steel) plate+40mm cavity+aperture 0.8mm, plate thickness 0.8mm, pitch-row 7mm second layer microperforated panel+110mm cavity.
Referring to Fig. 5, be the composite construction in the present embodiment and the sound absorption coefficient curve map of three kinds of sound absorption constructions in addition shown in the figure.From figure, can obviously find out, the composite construction of present embodiment and other three kinds of sound absorption constructions commonly used, thickness be no more than or suitable prerequisite under, sound absorbing capabilities obviously is superior to three kinds of common structures.
Can find out by above 3 embodiment; The described lightweight low frequency of the utility model wideband composite construction that absorbs sound by force has very strong low frequency absorption performance; Has very strong medium-high frequency sound absorbing capabilities simultaneously; Be wide band strong sound absorption construction, can effectively reduce plant and equipment noise, especially low-frequency noise.The lightweight low frequency that is this patent in the following table contrast table of wideband composite construction and existing sound absorption construction that absorbs sound by force.
Claims (8)
1. the wideband composite construction that absorbs sound by force comprises sound absorption panel and glass wool interlayer, it is characterized in that, the density of described glass wool interlayer is inwardly big from little change from the panel that absorbs sound.
2. strong sound absorption wideband composite construction as claimed in claim 1 is characterized in that described sound absorption panel is an aluminum fiberboard.
3. strong sound absorption wideband composite construction as claimed in claim 2 is characterized in that said aluminum fiberboard thickness is 1～2mm, and surface density is 400～2000g/m
2
4. strong sound absorption wideband composite construction as claimed in claim 1 is characterized in that described glass wool interlayer is divided at least 3 layers, increases successively from each the glass wool interlayer density near the internal layer of the outer inwards of sound absorption panel.
5. strong sound absorption wideband composite construction as claimed in claim 1 is characterized in that, the density of described glass wool interlayer inwardly becomes big from little gradually from the sound absorption panel.
6. like claim 1,4 or 5 described strong sound absorption wideband composite constructions, it is characterized in that described glass wool thickness of interlayer is 50～150mm, density range is 20～100kg/m
3
7. strong sound absorption wideband composite construction as claimed in claim 1 is characterized in that, on the described sound absorption panel fixed body is installed.
8. strong sound absorption wideband composite construction as claimed in claim 7 is characterized in that described fixed body is metope keel or sound barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204762932U CN202370112U (en) | 2011-11-25 | 2011-11-25 | Strong sound absorption wide frequency composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204762932U CN202370112U (en) | 2011-11-25 | 2011-11-25 | Strong sound absorption wide frequency composite structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370112U true CN202370112U (en) | 2012-08-08 |
Family
ID=46593820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204762932U Expired - Lifetime CN202370112U (en) | 2011-11-25 | 2011-11-25 | Strong sound absorption wide frequency composite structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370112U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805930A (en) * | 2015-04-14 | 2015-07-29 | 国网河南省电力公司济源供电公司 | Noise-proof transformer substation wall and construction method |
| CN105803963A (en) * | 2016-03-23 | 2016-07-27 | 重庆再升科技股份有限公司 | Light sound-absorbing composite material used along track |
| CN110228241A (en) * | 2019-05-16 | 2019-09-13 | 宿迁南航新材料与装备制造研究院有限公司 | A kind of method of reinforcing glass cotton sound absorbing performance |
| CN112282109A (en) * | 2020-11-02 | 2021-01-29 | 深圳千里马装饰集团有限公司 | Integrative sound insulation fireproof wall structure is decorated to assembled |
| CN112282136A (en) * | 2020-11-02 | 2021-01-29 | 深圳千里马装饰集团有限公司 | Partition wall structure with high sound insulation effect |
| CN112443056A (en) * | 2020-11-15 | 2021-03-05 | 深圳千里马装饰集团有限公司 | Swift connection structure in partition wall bottom |
| CN112459297A (en) * | 2020-11-15 | 2021-03-09 | 深圳千里马装饰集团有限公司 | Partition wall structure |
| CN112459298A (en) * | 2020-11-15 | 2021-03-09 | 深圳千里马装饰集团有限公司 | Assembled steel frame partition wall bottom quick connect structure |
-
2011
- 2011-11-25 CN CN2011204762932U patent/CN202370112U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805930A (en) * | 2015-04-14 | 2015-07-29 | 国网河南省电力公司济源供电公司 | Noise-proof transformer substation wall and construction method |
| CN104805930B (en) * | 2015-04-14 | 2017-06-13 | 国网河南省电力公司济源供电公司 | A kind of transformer station's antinoise wall and construction method |
| CN105803963A (en) * | 2016-03-23 | 2016-07-27 | 重庆再升科技股份有限公司 | Light sound-absorbing composite material used along track |
| CN105803963B (en) * | 2016-03-23 | 2017-10-31 | 重庆再升科技股份有限公司 | A kind of light silencing composite for along track |
| CN110228241A (en) * | 2019-05-16 | 2019-09-13 | 宿迁南航新材料与装备制造研究院有限公司 | A kind of method of reinforcing glass cotton sound absorbing performance |
| CN112282109A (en) * | 2020-11-02 | 2021-01-29 | 深圳千里马装饰集团有限公司 | Integrative sound insulation fireproof wall structure is decorated to assembled |
| CN112282136A (en) * | 2020-11-02 | 2021-01-29 | 深圳千里马装饰集团有限公司 | Partition wall structure with high sound insulation effect |
| CN112443056A (en) * | 2020-11-15 | 2021-03-05 | 深圳千里马装饰集团有限公司 | Swift connection structure in partition wall bottom |
| CN112459297A (en) * | 2020-11-15 | 2021-03-09 | 深圳千里马装饰集团有限公司 | Partition wall structure |
| CN112459298A (en) * | 2020-11-15 | 2021-03-09 | 深圳千里马装饰集团有限公司 | Assembled steel frame partition wall bottom quick connect structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202370112U (en) | Strong sound absorption wide frequency composite structure | |
| CN207260354U (en) | A kind of noise control damping Acoustic barrier plate | |
| US8495851B2 (en) | Acoustical sound proofing material and methods for manufacturing same | |
| US8181417B2 (en) | Acoustical sound proofing material and methods for manufacturing same | |
| US8770344B2 (en) | Acoustic panel | |
| CN103971670A (en) | Noise absorption and insulation composite board | |
| CN103794204A (en) | Application method of graphene macroscopic materials | |
| CN205177403U (en) | Noise reduction sound absorption layer | |
| CN204356925U (en) | A kind of indoor substation low frequency absorption denoising device | |
| CN104485096A (en) | Noise reduction sound absorption layer | |
| CN103545096A (en) | Transformer denoising device | |
| CN106558302A (en) | A kind of sound source device noise-reduction method | |
| CN201665927U (en) | Low frequency damping and sound insulation structure | |
| CN104727452B (en) | A kind of composite sound isolating material and the sound-proof wall body structure based on the material | |
| CN107237414A (en) | A kind of microporous aluminosilicates fiber sandwich sound-absorbing composite board | |
| CN208968026U (en) | Sound-insulating structure and air conditioner | |
| CN107170438A (en) | A kind of resistive filled type sound-absorbing composite board of density gradient | |
| CN201134246Y (en) | Ultramicro drilled noise absorbing film | |
| CN209457203U (en) | A kind of wall with absorbing sound and lowering noise function | |
| CN206368551U (en) | A kind of equipment soundproof room | |
| CN206722477U (en) | Ceramic tile production line sound arrester | |
| CN201689670U (en) | Flame-retardant environment-friendly porous sound-absorbing material component | |
| CN204130326U (en) | A kind of transformer damped noise reduction device | |
| CN207363097U (en) | A kind of novel noise reduction insulated compound trabs | |
| CN201746948U (en) | Composite light efficient wallboard structure of sound-proof room |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |
|
| CX01 | Expiry of patent term |