CN205224314U - Compound noise -reducing composite suitable for transformer noise pollutes processing - Google Patents
Compound noise -reducing composite suitable for transformer noise pollutes processing Download PDFInfo
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- CN205224314U CN205224314U CN201520902334.8U CN201520902334U CN205224314U CN 205224314 U CN205224314 U CN 205224314U CN 201520902334 U CN201520902334 U CN 201520902334U CN 205224314 U CN205224314 U CN 205224314U
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Abstract
The utility model discloses a compound noise -reducing composite suitable for transformer noise pollutes processing, including steel sheet, two -layer foam aluminium lamination and one deck glass wool layer, two -layer foam aluminium lamination lies in the glass wool layer both sides respectively and closely laminates with glass wool layer and constitutes the material main part, the steel sheet cladding is in the material main part outside, with the whole cladding of material main part with fixed foam aluminium lamination and glass wool layer. The utility model discloses in, glass wool layer lies in between the two -layer foam aluminium lamination, plays sound absorption, and two -layer foam aluminium lamination has sound insulation and sound absorption simultaneously, and glass wool layer and two -layer foam aluminium lamination constitute effectively noise absorbing's material main part. The steel sheet of cladding outside the material main part is then have the deadening to the compound noise -reducing composite's of reinforcing the noise reduction effect. This compound noise -reducing composite noise resistance can be high, falls the frequency spectrum width of making an uproar, can effectively reduce transformer noise.
Description
Technical field
The utility model relates to the acoustic damping materials for Noise Control, particularly relates to a kind of compound noise-reducing material being applicable to transformer noise pollution plot.
Background technology
Along with the fast development of Urbanization in China and the raising of living standards of the people, city power load increases swift and violent.But in short supply due to urban land resource, the difficulty of transformer substation in city addressing is increasing, causes a large amount of substation location to be deep into down town, causes the close together of part transformer station and esidential building.Simultaneously along with China's environmental law, improving of regulation and improving constantly of Public Environmental Awareness, the requirement of the masses to self environment improves constantly, cause the problem of environmental pollution of transformer substation in city, particularly transformer noise pollution problem, become the hot issue of public concern, media concern.
The noise source of transformer is divided into this bulk noise and cooling system noise.The electromagnetic noise produced when transformer body noise mainly runs from transformer, mainly comprise two large divisions, a part is because the silicon steel sheet of iron core is under the effect of alternating magnetic field, length generation minor variations and magnetostriction, magnetostriction makes iron core make with the change of excitation frequency the noise that periodic vibration produces, this part noise comprises fundamental component and higher harmonic components, fundamental frequency is 2 times of alternating current frequency, for the alternating current that frequency is 50Hz, transformer noise take 100Hz as fundamental frequency, comprise 200Hz simultaneously, the higher harmonic components of 300Hz etc.Another part makes some parts produce the noise vibrating and cause under coming from the stray field electromagnetic force of winding, the noise of this part is mainly based on 50Hz and harmonic frequency thereof.Put the electromagnetic noise that the magnetostriction of magnetic screen on power and fuel tank etc. produces between magnetostriction, winding, form this bulk noise of transformer together.When cooling system noise mainly runs from cooling blower, oil pump, and the noise that vibration when connecting portion rotates produces.Transformer body rotates also can pass to cooler by transformer oil pipe, joint and Assembly part thereof etc. sometimes, aggravates its vibration, strengthens the noise of its radiation.Cooling system noise is based on the medium-high frequency aerodynamic noise of 500 ~ 4000Hz.
Different sound absorptions, the treatment effect of sound insulating material to the sound of different frequency section differ.But the sound absorption of selecting when transformer noise is administered at present, sound insulating material are with L
afor index, substantially do not consider the frequency characteristic of material, cause power grid enterprises after a large amount of human and material resources of cost carry out noise abatement, still can not meet public demands.Therefore, be badly in need of the frequency characteristic aspect from transformer, carry out the control efficiency research of typical transformer noise pollution control measure, to reaching more efficient Control Noise Pollution measure in the Noise Control of transformer.
Utility model content
The utility model object is to provide a kind of compound noise-reducing material being applicable to transformer noise pollution plot.
The purpose of this utility model is achieved through the following technical solutions: a kind of compound noise-reducing material being applicable to transformer noise pollution plot, comprise steel plate, two layers of foam aluminium lamination and one deck glass wool layer, described two layers of foam aluminium lamination lays respectively at glass wool layer both sides and fits tightly constituent material main body with glass wool layer, described steel plate is coated on outside body of material, by body of material integral coating with fixed foam aluminium lamination and glass wool layer.In the utility model, glass wool layer, between two layers of foam aluminium lamination, plays sound absorption, and two layers of foam aluminium lamination has sound insulation and sound absorption simultaneously, and glass wool layer and two layers of foam aluminium lamination form the body of material that effectively can absorb noise.The steel plate be coated on outside body of material then has deadening, thus strengthens the noise reduction of compound noise-reducing material.
Described steel plate thickness 1-1.5mm.As an embodiment of the present utility model, described steel plate is color steel, can not only play fixing and deadening, can also decoration metope.Described steel plate is double-deck 900 type color steels.
Described foamed aluminium layer thickness is 12-18mm, is 0.4g/cm by density
3foamed aluminium make.
Described glass wool layer thickness 45-55mm is 30kg/m by density
3glass wool make.
the utility model has the following advantages:
(1) the compound noise-reducing material for transformer noise pollution plot that provides of the utility model, anti-acoustic capability is high, and noise reduction frequency spectrum is wide, effectively can reduce transformer noise.
(2) the compound noise-reducing material for transformer noise pollution plot that provides of the utility model, compact conformation, stable, good reliability, windproof, rainproof, high temperature resistant property strong, and anti-electromagnetic interference capability is strong, can use by long-term outdoor.
(3) the utility model adopts color steel, while playing fixing and deadening, and also decoration metope.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the compound noise-reducing material being applicable to transformer noise pollution plot that the utility model provides is described further:
Fig. 1 is the sectional view of compound noise-reducing material of the present utility model;
Fig. 2 is the scheme of installation (top is without steel plate) of compound noise-reducing material of the present utility model.
Detailed description of the invention
The compound noise-reducing material being applicable to transformer noise pollution plot shown in Fig. 1-2, is made up of steel plate 1, two layers of foam aluminium lamination 2 and one deck glass wool layer 3.Steel plate is double-deck 900 type color steels, thickness 1.2mm.Foamed aluminium layer 2 thickness is 15mm, is 0.4g/cm by density
3foamed aluminium make.Glass wool layer thickness 50mm is 30kg/m by density
3glass wool make.Two layers of foam aluminium lamination 2 lays respectively at glass wool layer 3 both sides and fits tightly constituent material main body with glass wool layer 3, and steel plate 1 is coated on outside body of material, by body of material integral coating with fixed foam aluminium lamination 2 and glass wool layer 3.Glass wool layer 3, between two layers of foam aluminium lamination 2, plays sound absorption, and two layers of foam aluminium lamination 2 has sound insulation and sound absorption simultaneously, and glass wool layer 3 and two layers of foam aluminium lamination 2 form the body of material that effectively can absorb noise.The steel plate of clad material main body then has deadening, thus strengthens the noise reduction of compound noise-reducing material, and owing to adopting color steel, can also decoration metope.
In the present embodiment, compound noise-reducing material adopts common channel-section steel to be fixed as shown in Figure 2.
Claims (8)
1. one kind is applicable to the compound noise-reducing material of transformer noise pollution plot, it is characterized in that, comprise steel plate, two layers of foam aluminium lamination and one deck glass wool layer, described two layers of foam aluminium lamination lays respectively at glass wool layer both sides and fits tightly constituent material main body with glass wool layer, described steel plate is coated on outside body of material, by body of material integral coating with fixed foam aluminium lamination and glass wool layer.
2. the compound noise-reducing material being applicable to transformer noise pollution plot according to claim 1, is characterized in that, described steel plate thickness 1-1.5mm.
3. the compound noise-reducing material being applicable to transformer noise pollution plot according to claim 1 and 2, is characterized in that, described steel plate is color steel.
4. the compound noise-reducing material being applicable to transformer noise pollution plot according to claim 3, is characterized in that, described color steel is double-deck 900 type color steels.
5. the compound noise-reducing material being applicable to transformer noise pollution plot according to claim 1 and 2, is characterized in that, described foamed aluminium layer thickness is 12-18mm.
6. the compound noise-reducing material being applicable to transformer noise pollution plot according to claim 5, is characterized in that, described foamed aluminium layer is 0.4g/cm by density
3foamed aluminium make.
7. the compound noise-reducing material being applicable to transformer noise pollution plot according to claim 1 and 2, is characterized in that, described glass wool layer thickness 45-55mm.
8. the compound noise-reducing material being applicable to transformer noise pollution plot according to claim 7, is characterized in that, described glass wool layer is 30kg/m by density
3glass wool make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520902334.8U CN205224314U (en) | 2015-11-13 | 2015-11-13 | Compound noise -reducing composite suitable for transformer noise pollutes processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520902334.8U CN205224314U (en) | 2015-11-13 | 2015-11-13 | Compound noise -reducing composite suitable for transformer noise pollutes processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205224314U true CN205224314U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520902334.8U Active CN205224314U (en) | 2015-11-13 | 2015-11-13 | Compound noise -reducing composite suitable for transformer noise pollutes processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205224314U (en) |
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2015
- 2015-11-13 CN CN201520902334.8U patent/CN205224314U/en active Active
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