CN109243791A - Noise reduction sound arrester and method for two transformers in half indoor type substation - Google Patents
Noise reduction sound arrester and method for two transformers in half indoor type substation Download PDFInfo
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- CN109243791A CN109243791A CN201811009679.5A CN201811009679A CN109243791A CN 109243791 A CN109243791 A CN 109243791A CN 201811009679 A CN201811009679 A CN 201811009679A CN 109243791 A CN109243791 A CN 109243791A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000009467 reduction Effects 0.000 title claims abstract description 18
- 230000004888 barrier function Effects 0.000 claims abstract description 46
- 239000011358 absorbing material Substances 0.000 claims abstract description 15
- 235000008429 bread Nutrition 0.000 claims abstract description 5
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 238000000844 transformation Methods 0.000 claims description 2
- 239000006096 absorbing agent Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000006854 communication Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/33—Arrangements for noise damping
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/8227—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only screens ; Arrangements of sound-absorbing elements, e.g. baffles
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Acoustics & Sound (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a kind of noise reduction sound arresters and method for two transformers in half indoor type substation, including transformer, fixing layer and barrier layer, transformer is two, and fixing layer is in E set up of character patt ern on the outside of two transformers, it simultaneously encloses transformer three bread of progress, on the inside of fixing layer and distribution corresponding with transformer building wall outer side is provided with sound-absorbing material, barrier layer is arranged on fixing layer, barrier layer is the transparent sound proof barrier for being provided with transparent area, transparent sound proof barrier exterior panel is provided with PVC overlay film, waterproof rain cap is provided at the top of transparent sound proof barrier；The present invention is immediately ahead of transformer and two sides are first poured concrete wall, three face E fonts are carried out to transformer to surround, sound-absorbing material is installed in distribution building wall and concrete wall simultaneously, then acoustic barrier is installed on concrete wall again, change the propagation medium of sound, reduces influence of the substation to resident.
Description
Technical field:
The present invention relates to a kind of for field of power transformation, more particularly to a kind of drop for two transformers in half indoor type substation
It makes an uproar sound arrester and method.
Background technique:
With the development of society, more and more substations are surrounded by city, substation can generate certain noise in operation,
Since resident and substation are closer, the noise that substation generates will affect daily life；Substation's internal noise source
Main includes that Transformer generates the noise, high pressure inlet-outlet line and equipment component electricity generated when noise and cooling device operating
Operation sound etc. when corona sound, hyperbaric chamber exhaust fan are opened；The main noise source of substation generates when being transformer station high-voltage side bus
Electromagnetic noise, much larger than the corona noise of bus.The pneumatic noise and mechanical noise that some substations generate there are also cooling device.
The magnetic hysteresis striction phenomenon of electrical steel piece is the main reason for generating transformer noise.Mechanical noise is then vibration equipment, cooling
Caused by device, cooling device includes fan, oil pump etc..
Outdoor transformer noise generally stops without structures in substation transformer noise transmission approach, and noise is to boundary
Influence with resident belongs to straightline propagation, and attenuation is small, and attenuation directly depends on the size of factory circle.The transformation of half indoor arrangement
Device only adds a sound-proof wall in outdoor arrangement between transformer, other directions are open.In this way, interfered between transformer it is small, and
The noise attenuation of closed side is big, the unbuilt blocking of open sides, and sound wave straightline propagation influences the daily life of neighbouring resident
It is living.
Summary of the invention:
The technical problems to be solved by the present invention are: overcome the deficiencies of the prior art and provide a kind of structure it is simple, transformer just
Front and two sides are first poured concrete wall, while installing sound-absorbing material in distribution building wall and concrete wall, then
Installed on concrete wall again acoustic barrier for two transformers in half indoor type substation noise reduction sound arrester and
Method.
The technical scheme is that a kind of noise reduction sound arrester for two transformers in half indoor type substation,
Including transformer, fixing layer and barrier layer, the transformer is two, and the fixing layer is in E set up of character patt ern in two transformations
On the outside of device, and three bread are carried out to transformer and are enclosed, the fixing layer inside and distribution corresponding with transformer building wall outer side
It is provided with sound-absorbing material, the barrier layer is arranged on the fixing layer, and the barrier layer is be provided with transparent area transparent
Noise barrier, the transparent sound proof barrier exterior panel are provided with PVC overlay film, are provided at the top of the transparent sound proof barrier anti-
Water rain cap.
Further, the fixing layer and distribution building wall connecting, and the door for disengaging is provided on the fixing layer.
Access way is provided between the fixing layer and distribution building wall, be provided on the distribution building wall at the access way with
The reflection fixing layer with angle.
Further, the fixing layer and reflection fixing layer are concrete walls, and the sound-absorbing material is bilayer 80mm thick
Acoustic wall board, double-layer sound-absorption wall are the aluminium alloy plate handled by plastic-sprayed corrosion-preventive technique.The barrier layer passes through by plating
Zinc and the H profile steel of plastic-sprayed corrosion-preventive processing are arranged on the upside of the fixing layer.
A kind of noise reduction method of sound insulation for two transformers in half indoor type substation, method are as follows: A, become at two
The front of depressor and two side casting are in the concrete wall of E font；B, on the inside of concrete wall and corresponding with transformer
Distribution building wall outer side is respectively provided with sound-absorbing material；C, through the H profile steel through the processing of zinc-plated and plastic-sprayed corrosion-preventive on concrete wall
Transparent sound proof barrier with transparent area is set, and PVC overlay film is set in transparent sound proof barrier exterior panel.
Further, in the step A, concrete wall and distribution building wall connecting, and be provided on concrete wall
Door for disengaging.
Further, in the step A, access way is provided between concrete wall and distribution building wall, and pass in and out
Reflection concrete walls therewith with angle are provided on distribution building wall at channel.
Further, the sound-absorbing material is bilayer 80mm thickness acoustic wall board, and the double-layer sound-absorption wall is to pass through plastic-spraying
The aluminium alloy plate that anticorrosion process is handled.
Further, the concrete wall height and thickness are respectively 3.5m and 300mm, the transparent sound proof barrier
Height is 2.7m, and its top is provided with waterproof rain cap, the PVC overlay film with a thickness of 1.2mm.
The beneficial effects of the present invention are:
1, the present invention is immediately ahead of transformer and two sides are first poured concrete wall, carries out three face E font packets to transformer
It encloses, while sound-absorbing material being installed in distribution building wall and concrete wall, then acoustic barrier is installed on concrete wall again,
The intensity of residential block sound wave is reduced by the absorption, reflection and refraction action of medium in the propagation medium for changing sound, is reduced
Influence of the substation to resident.
2, the present invention is provided with the concrete wall of semi-surrounding, after sound wave encounters wall in communication process, makes sound wave
The direction of propagation changes, i.e., sound wave will be propagated at the top of enclosure wall with end, and make sound level arrives decaying.
3, wall inner wall and distribution building wall outer side of the present invention is provided with double-layer sound-absorption wallboard, and sound wave is inhaled in realization
It receives to reduce noise pollution, transparent sound proof barrier is arranged on concrete wall, while reducing scattered outside sound wave, avoids because of enclosing
Excessive height blocks residential building daylighting.
4, the present invention is enclosed by carrying out three bread to transformer, and is cooperated with distribution building wall, realizes transformer noise four
Place propagates and simultaneously, also helps it and radiate, and is used for by concrete wall and the relationship setting of distribution building wall position
The channel of maintenance and switch gate.
5, reflection fixing layer therewith with angle is provided on distribution building wall of the present invention at access way, due to
It can reflect acoustic wave segment with certain angle, increase the difficulty that sound wave is overflowed from access way, be convenient for air
Flowing, increase the heat-sinking capability of transformer.
6, transparent sound proof barrier exterior panel of the present invention is provided with PVC overlay film, is provided at the top of transparent sound proof barrier anti-
Water rain cap, column are handled by zinc-plated and plastic-sprayed corrosion-preventive, and corrosion strength caused by reducing because of wind and weather prolongs the service life.
7, double-layer sound-absorption wall of the present invention selects aluminium alloy plate, and outside uses plastic-sprayed corrosion-preventive technique, can add the same of sound absorption effect
When, corrosion strength caused by reducing because of wind and weather prolongs the service life.
Detailed description of the invention:
Fig. 1 is a kind of structural schematic diagram of the application.
Fig. 2 is another structural schematic diagram of the application.
Fig. 3 is the structural schematic diagram of barrier layer.
Fig. 4 is A-A cross-sectional view in Fig. 3.
Specific embodiment:
Embodiment: referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, in figure, 1- substation, 2- residential building, 3- transformer, 4- fixing layer, 5- matches
Electric building, 6- access way, 7- reflect fixing layer, 8- barrier layer, 9-H fashioned iron, 10- transparent area, 11- waterproof rain cap.
Embodiments herein is described in detail with reference to the accompanying drawing.
A kind of noise reduction method of sound insulation for two transformers in half indoor type substation, method are as follows: A, become at two
The front of depressor and two side casting are in the concrete wall of E font；B, on the inside of concrete wall and corresponding with transformer
Distribution building wall outer side is respectively provided with sound-absorbing material；C, through the H profile steel through the processing of zinc-plated and plastic-sprayed corrosion-preventive on concrete wall
Transparent sound proof barrier with transparent area is set, and PVC overlay film is set in transparent sound proof barrier exterior panel.
Further, in the step A, concrete wall and distribution building wall connecting, and be provided on concrete wall
Door for disengaging.
Further, in the step A, access way is provided between concrete wall and distribution building wall, and pass in and out
Reflection concrete walls therewith with angle are provided on distribution building wall at channel.
Further, the sound-absorbing material is bilayer 80mm thickness acoustic wall board, and the double-layer sound-absorption wall is to pass through plastic-spraying
The aluminium alloy plate that anticorrosion process is handled.
Further, the concrete wall height and thickness are respectively 3.5m and 300mm, the transparent sound proof barrier
Height is 2.7m, and its top is provided with waterproof rain cap, the PVC overlay film with a thickness of 1.2mm.
Embodiment one: for the noise reduction sound arrester of two transformers in half indoor type substation, including it is transformer 3, solid
Given layer 4 and barrier layer 8, transformer 3 are two, and fixing layer 4 is in E set up of character patt ern in two 3 outsides of transformers, and to transformation
Device 3 carries out three bread and encloses, and 4 inside of fixing layer and 5 wall outer side of distribution corresponding with transformer 3 building are provided with sound-absorbing material,
Barrier layer 8 is arranged on fixing layer 4, and barrier layer 8 is the transparent sound proof barrier for being provided with transparent area 10, outside transparent sound proof barrier
Panel is provided with PVC overlay film, is provided with waterproof rain cap 11 at the top of transparent sound proof barrier.
Fixing layer 4 and 5 wall connecting of distribution building, and the door for disengaging is provided on fixing layer 4.Fixing layer 4 is coagulation
Cob wall, sound-absorbing material are bilayer 80mm thickness acoustic wall board, and double-layer sound-absorption wall is that the aluminium handled by plastic-sprayed corrosion-preventive technique closes
Golden plate.Barrier layer 8 passes through the setting of H profile steel 9 handled by zinc-plated and plastic-sprayed corrosion-preventive in 4 upside of fixing layer.
Embodiment two: the present embodiment is basically the same as the first embodiment, and difference is fixing layer 4 and 5 wall of distribution building
Between positional relationship difference, specifically describe are as follows: be provided with access way 6 between 5 wall of fixing layer 4 and distribution building, pass in and out
Reflection fixing layer 7 therewith with angle is provided on 5 wall of distribution building at channel 6；Reflection fixing layer 7 is concrete walls.
3.5m high, bilayer is set on the inside of two 3 three sides of transformer, close transformer 3 with a thickness of the setting of 300mm concrete walls
80mm thickness acoustic wall board sets 2.7 meters of high sound absorbing-insulating barriers on concrete walls, total 6.2 meters high；Double-layer sound-absorption wall selects aluminium alloy
Plate, outside use plastic-sprayed corrosion-preventive technique；Sound absorbing-insulating barrier column uses H profile steel 9, the processing of zinc-plated and plastic-sprayed corrosion-preventive, exterior panel
It is all made of PVC overlay film preservative treatment, thickness is not less than 1.2mm, and top installs waterproof rain cap 11 additional；The sound wave that transformer 3 generates exists
It is reflected, is absorbed eventually by double-layer sound-absorption wall, acoustic wave segment passes through top between 5 wall of concrete walls and distribution building
Space is propagated after overflowing to top, will not be impacted to neighbouring resident.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, it is all
It is any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, still falls within
In the range of technical solution of the present invention.
Claims (10)
1. a kind of noise reduction sound arrester for two transformers in half indoor type substation, including transformer, fixing layer and screen
Barrier layer, it is characterized in that: the transformer is two, and the fixing layer is in E set up of character patt ern on the outside of two transformers, and right
Transformer carries out three bread and encloses, and on the inside of the fixing layer and distribution corresponding with transformer building wall outer side is provided with sound absorber
Material, the barrier layer are arranged on the fixing layer, and the barrier layer is the transparent sound proof barrier for being provided with transparent area, described
Bright noise barrier exterior panel is provided with PVC overlay film, is provided with waterproof rain cap at the top of the transparent sound proof barrier.
2. the noise reduction sound arrester according to claim 1 for being used for two transformers in half indoor type substation, feature
It is: the fixing layer and distribution building wall connecting, and the door for disengaging is provided on the fixing layer.
3. the noise reduction sound arrester according to claim 1 for being used for two transformers in half indoor type substation, feature
It is: is provided with access way between the fixing layer and distribution building wall, is arranged on the distribution building wall at the access way
There is reflection fixing layer therewith with angle.
4. any one noise reduction sound insulation for being used for two transformers in half indoor type substation according to claim 2 or 3 fills
It sets, it is characterized in that: the fixing layer and reflection fixing layer are concrete walls, the sound-absorbing material is bilayer 80mm thickness acoustic wall
Plate, double-layer sound-absorption wall are the aluminium alloy plate handled by plastic-sprayed corrosion-preventive technique.
5. the noise reduction sound arrester according to claim 1 for being used for two transformers in half indoor type substation, feature
Be: the barrier layer passes through the H profile steel handled by zinc-plated and plastic-sprayed corrosion-preventive and is arranged on the upside of the fixing layer.
6. a kind of noise reduction method of sound insulation for two transformers in half indoor type substation, method are as follows: A, in two transformations
The front of device and two side casting are in the concrete wall of E font；B, on the inside of concrete wall and corresponding with transformer match
Electric building wall outer side is respectively provided with sound-absorbing material；C, it is set on concrete wall by the H profile steel through the processing of zinc-plated and plastic-sprayed corrosion-preventive
The transparent sound proof barrier with transparent area is set, and PVC overlay film is set in transparent sound proof barrier exterior panel.
7. the noise reduction method of sound insulation according to claim 6 for being used for two transformers in half indoor type substation, feature
It is: in the step A, concrete wall and distribution building wall connecting, and the door for disengaging is provided on concrete wall.
8. the noise reduction method of sound insulation according to claim 6 for being used for two transformers in half indoor type substation, feature
It is: in the step A, is provided with access way between concrete wall and distribution building wall, and the distribution building at access way
Reflection concrete walls therewith with angle are provided on wall.
9. the noise reduction method of sound insulation according to claim 6 for being used for two transformers in half indoor type substation, feature
Be: the sound-absorbing material is bilayer 80mm thickness acoustic wall board, and the double-layer sound-absorption wall is at by plastic-sprayed corrosion-preventive technique
The aluminium alloy plate of reason.
10. the noise reduction method of sound insulation according to claim 6 for being used for two transformers in half indoor type substation, feature
Be: the concrete wall height and thickness are respectively 3.5m and 300mm, and the height of the transparent sound proof barrier is 2.7m, and
Its top is provided with waterproof rain cap, the PVC overlay film with a thickness of 1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009679.5A CN109243791A (en) | 2018-08-31 | 2018-08-31 | Noise reduction sound arrester and method for two transformers in half indoor type substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009679.5A CN109243791A (en) | 2018-08-31 | 2018-08-31 | Noise reduction sound arrester and method for two transformers in half indoor type substation |
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| Publication Number | Publication Date |
|---|---|
| CN109243791A true CN109243791A (en) | 2019-01-18 |
Family
ID=65069052
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811009679.5A Pending CN109243791A (en) | 2018-08-31 | 2018-08-31 | Noise reduction sound arrester and method for two transformers in half indoor type substation |
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|---|---|---|---|---|
| CH645422A5 (en) * | 1978-10-26 | 1984-09-28 | Teco Schallschutzsystem Gmbh | Absorbing noise-protection wall |
| US5648888A (en) * | 1995-12-27 | 1997-07-15 | Hydro-Quebec | Power distribution substation |
| JP2002069944A (en) * | 2000-09-05 | 2002-03-08 | Ngk Insulators Ltd | Light transmissible soundproof board and soundproof wall using the same |
| JP2007324389A (en) * | 2006-06-01 | 2007-12-13 | Tokyo Electric Power Co Inc:The | Sound proofing panel and transformer sound-proofing system employing the same |
| KR100874411B1 (en) * | 2008-09-05 | 2008-12-17 | (주)토우종합건축사사무소 | Sound proof wall |
| CN201924291U (en) * | 2010-07-21 | 2011-08-10 | 天津市科保环隔音墙有限公司 | Transparent soundproof plate wall |
| CN103346006A (en) * | 2013-05-22 | 2013-10-09 | 枣庄力源电力设计有限公司 | Main transformer sound absorption type sound barrier |
| CN203462597U (en) * | 2013-08-19 | 2014-03-05 | 国家电网公司 | 1000 kilovolt high-voltage transformation substation anti-noise sound isolation wall |
| AU2014201988A1 (en) * | 2013-04-08 | 2014-10-23 | Csr Building Products Limited | Sound attenuating structure |
| CN106013865A (en) * | 2016-06-03 | 2016-10-12 | 国网河南南召县供电公司 | Noise reduction and protection device for outdoor power transformer |
| CN106639632A (en) * | 2016-12-13 | 2017-05-10 | 国网天津市电力公司 | Transformer substation enclosing wall sound insulation device |
| CN206931472U (en) * | 2016-11-24 | 2018-01-26 | 国网河南新密市供电公司 | The indoor type main transformer of transformer substation noise control systems of 110kV half |
-
2018
- 2018-08-31 CN CN201811009679.5A patent/CN109243791A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH645422A5 (en) * | 1978-10-26 | 1984-09-28 | Teco Schallschutzsystem Gmbh | Absorbing noise-protection wall |
| US5648888A (en) * | 1995-12-27 | 1997-07-15 | Hydro-Quebec | Power distribution substation |
| JP2002069944A (en) * | 2000-09-05 | 2002-03-08 | Ngk Insulators Ltd | Light transmissible soundproof board and soundproof wall using the same |
| JP2007324389A (en) * | 2006-06-01 | 2007-12-13 | Tokyo Electric Power Co Inc:The | Sound proofing panel and transformer sound-proofing system employing the same |
| KR100874411B1 (en) * | 2008-09-05 | 2008-12-17 | (주)토우종합건축사사무소 | Sound proof wall |
| CN201924291U (en) * | 2010-07-21 | 2011-08-10 | 天津市科保环隔音墙有限公司 | Transparent soundproof plate wall |
| AU2014201988A1 (en) * | 2013-04-08 | 2014-10-23 | Csr Building Products Limited | Sound attenuating structure |
| CN103346006A (en) * | 2013-05-22 | 2013-10-09 | 枣庄力源电力设计有限公司 | Main transformer sound absorption type sound barrier |
| CN203462597U (en) * | 2013-08-19 | 2014-03-05 | 国家电网公司 | 1000 kilovolt high-voltage transformation substation anti-noise sound isolation wall |
| CN106013865A (en) * | 2016-06-03 | 2016-10-12 | 国网河南南召县供电公司 | Noise reduction and protection device for outdoor power transformer |
| CN206931472U (en) * | 2016-11-24 | 2018-01-26 | 国网河南新密市供电公司 | The indoor type main transformer of transformer substation noise control systems of 110kV half |
| CN106639632A (en) * | 2016-12-13 | 2017-05-10 | 国网天津市电力公司 | Transformer substation enclosing wall sound insulation device |
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