CN106836539A - Transformer station's noise reduction system - Google Patents
Transformer station's noise reduction system Download PDFInfo
- Publication number
- CN106836539A CN106836539A CN201710050802.7A CN201710050802A CN106836539A CN 106836539 A CN106836539 A CN 106836539A CN 201710050802 A CN201710050802 A CN 201710050802A CN 106836539 A CN106836539 A CN 106836539A
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- China
- Prior art keywords
- transformer station
- noise reduction
- noise
- denoising device
- air outlet
- 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.)
- Granted
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- 238000009413 insulation Methods 0.000 claims abstract description 42
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- E04B1/84—Sound-absorbing elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Acoustics & Sound (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Wind Motors (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The present invention discloses a kind of transformer station's noise reduction system.Including transformer station and denoising device, the denoising device includes：Configure sound insulation band of second denoising device and configuration of the first denoising device, configuration on the outside of transformer station on the outside of the first denoising device on the outside of the second denoising device.The present invention sets three denoising devices between transformer station and residential block, and the noise reduction of transformer station is realized by three layers of noise reduction measure.Fully it is equipped between three denoising devices, greatly improves effect of whole noise reduction system；Especially for 500kv transformer stations, the present invention has extremely strong noise reduction；Specifically, the first denoising device is mainly used in noise reduction and the noise reduction of transformer station's noise；Second denoising device is used for the sound insulation of transformer station's noise, noise reduction and the untreated complete noise of the first denoising device is returned into the first denoising device；Sound insulation band is mainly disposed to residential neighborhood, and the noise to passing through the second denoising device is made to isolate.
Description
Technical field
The present invention relates to noise reducing apparatus, and in particular to a kind of transformer station's noise reduction system.
Background technology
The noise produced during the operation of transformer station is outside main transformer, high voltage reactor, breaker and room
The aerodynamic noise that the electromagnetic noise and cooling fan of the electrical equipments such as power distribution equipment are produced, according to《Industrial Enterprise Factory Boundary ring
Border noise emission standard》(GB12348-2008) 2 category alignment request：Controlled between daytime in 60dB (A), night control at 50dB (A)
Within, in order to efficiently control ambient noise, the noise for producing 500kv substation projects does not disturb resident, it is necessary in power transformation
Stand and denoising device is set and residential block between.The sound insulation enclosure wall of traditional transformer station uses common brick enclosure wall, and defening effect is poor,
And without sound absorption function, the resident's for being unfavorable for around living is healthy.
The content of the invention
For problems of the prior art, it is an object of the invention to propose a kind of technology of transformer station's noise reduction system
Method.
Described transformer station's noise reduction system, including transformer station and denoising device, it is characterised in that the denoising device bag
Include：The first denoising device on the outside of transformer station is configured, the second denoising device on the outside of the first denoising device is configured and is matched somebody with somebody
Put the sound insulation band on the outside of the second denoising device；
First denoising device includes noise reducing plate, abatvoix and the first sound insulation vibration damper plate, and the noise reducing plate and abatvoix are all provided with
Put in the upper end of the first sound insulation vibration damper plate, noise reducing plate is positioned close to the side of transformer station；
Second denoising device includes the second sound insulation vibration damper plate, sound panel, soundproof wall and blower fan, the sound panel and soundproof wall
The upper end of the second sound insulation vibration damper plate is arranged at, sound panel is positioned close to the side of transformer station, and the soundproof wall is near sound insulation
The side of plate is coated with sound-deadening paint, and soundproof wall middle setting has vacuum layer；The blower fan be arranged on the upper end of soundproof wall and
Blower fan can be rotated around the upper end of soundproof wall, and blower fan is provided with the output end of air outlet, air outlet and blower fan near the side of transformer station
Connection, air outlet includes upper air outlet and lower air outlet, and upper air outlet is arranged on the top of lower air outlet, and upper air outlet is by rotation
Runner is connected with the blower fan, and rotating wheel can be rotated around blower fan, so that upper air outlet goes out the wind of horizontal direction always.
Described transformer station's noise reduction system, it is characterised in that the sound panel is provided with sound insulation hole.
Described transformer station's noise reduction system, it is characterised in that the gap width between the soundproof wall and the sound panel
It is 10 ~ 20cm.
Described transformer station's noise reduction system, it is characterised in that be provided with acoustical cotton between the soundproof wall and the sound panel.
Described transformer station's noise reduction system, it is characterised in that the upper end of the soundproof wall is provided with the first motor, the blower fan
Lower end be provided with second gear, second gear is engaged with the first gear set on the first motor output end, and the first motor can drive
Dynamic blower fan is rotated.
Described transformer station's noise reduction system, it is characterised in that the blower fan upper end is provided with the second motor, the side of rotating wheel
The 3rd gear is provided with, the 3rd gear is engaged with the 4th gear set on the second motor output end, and the second motor can drive rotation
Wheel is rotated.
Described transformer station's noise reduction system, it is characterised in that the upper air outlet is at least provided with 3.
Described transformer station's noise reduction system, it is characterised in that the sound insulation band is the sound control glass of vacuum.
Described transformer station's noise reduction system, it is characterised in that the noise reducing plate includes the first noise reducing plate and the second noise reducing plate,
First noise reducing plate is positioned close to the side of transformer station, and the first noise reducing plate is provided with tooth bar, second near the side of the second noise reducing plate
Noise reducing plate upper end is provided with the 3rd motor, and the 5th wheel and rack engagement set on the 3rd motor output end, the 3rd motor can drive
Dynamic first noise reducing plate lifting.
Beneficial effects of the present invention are：The present invention sets three denoising devices between transformer station and residential block, by three
Layer noise reduction measure realizes the noise reduction of transformer station.Fully it is equipped between three denoising devices, makes whole noise reduction system
Effect is greatly improved.Especially for 500kv transformer stations, the present invention has extremely strong noise reduction.Specifically, the first noise reduction dress
Put the noise reduction and noise reduction for being mainly used in transformer station's noise；Second denoising device is used for sound insulation, noise reduction and the general of transformer station's noise
The untreated complete noise of first denoising device is returned to the first denoising device；Sound insulation band is mainly disposed to residential neighborhood, right
The noise for passing through the second denoising device is made to isolate.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the second denoising device partial structural diagram；
Fig. 3 is blower fan partial structural diagram；
Fig. 4 is the first denoising device partial structural diagram；
Fig. 5 is septum arrangements schematic diagram；
Wherein：1- transformer stations, 2- the first sound insulation vibration damper plates, 3- abatvoixs, the noise reducing plates of 4- second, the noise reducing plates of 5- first, 6- second
Sound insulation vibration damper plate, 7- soundproof walls, 8- sound panels, 9- first gears, 10- blower fans, air outlet under 11-, the upper air outlets of 12-, 13- every
Vocal cores, 14- rotating wheels, the gears of 15- the 3rd, the gears of 16- the 4th, 17- sound insulations hole, the gears of 18- the 5th, 19- tooth bars, 20- vacuum
Layer, 21- sound-deadening paints, 22- second gears.
Specific embodiment
The present invention is elaborated below in conjunction with the accompanying drawings.
The present invention includes transformer station 1 and denoising device, and transformer station 1 can be 500kv transformer stations 1, and the denoising device includes：
Configure second denoising device and configuration of the first denoising device, configuration on the outside of transformer station 1 on the outside of the first denoising device
Sound insulation band 13 on the outside of the second denoising device, also referred to as the 3rd denoising device of sound insulation band 13, sound insulation can be vacuum with 13
Sound control glass；Three denoising devices are set between transformer station 1 and residential block, transformer station 1 is realized by three layers of noise reduction measure
Noise reduction.First denoising device is mainly used in noise reduction and the noise reduction of the noise of transformer station 1；Second denoising device is used for transformer station 1
The sound insulation of noise, noise reduction and the untreated complete noise of the first denoising device is returned to the first denoising device；Sound insulation band 13
Residential neighborhood is mainly disposed to, the noise to passing through the second denoising device is made to isolate.Three denoising devices are used in conjunction with each other,
So that the present invention has extremely strong noise reduction, the noise that transformer station 1 produces can be adequately isolated or eliminated, it is ensured that neighbouring resident
The peace and quiet of living environment.
Embodiment 1：
The present invention includes transformer station 1 and denoising device, and transformer station 1 can be 500kv transformer stations 1, and the denoising device includes：Configuration
The second denoising device on the outside of the first denoising device of the first denoising device, configuration in the outside of transformer station 1 and configuration are the
Sound insulation band 13 on the outside of two denoising devices, sound insulation is the sound control glass of vacuum with 13.
First denoising device includes noise reducing plate, the sound insulation vibration damper plate 2 of abatvoix 3 and first, the noise reducing plate and sound-absorbing
Plate 3 is arranged at the upper end of the first sound insulation vibration damper plate 2, and the first sound insulation vibration damper plate 2 can break off noise reducing plate（Or abatvoix 3）With ground
Acoustic between face, is mainly completely cut off sound and is transmitted by the vibration between solid；The noise reducing plate is positioned close to transformer station 1
Side, noise reducing plate is used to completely cut off the noise of the generation of transformer station 1 or reduces the noise of the generation of transformer station 1 to the periphery transmission of transformer station 1.
Preferably, noise reducing plate includes the first noise reducing plate 5 and the second noise reducing plate 4, and the first noise reducing plate 5 is positioned close to transformer station 1
Side, the first noise reducing plate 5 is provided with tooth bar 19 near the side of the second noise reducing plate 4, and the upper end of the second noise reducing plate 4 is provided with the 3rd electricity
Machine, the 5th gear 18 set on the 3rd motor output end is engaged with tooth bar 19, therefore by the 3rd motor first can be driven to drop
Plate 5 of making an uproar rises or falls.First noise reducing plate 5 and the second noise reducing plate stack combinations about 4, can increase noise reducing plate whole height,
Enhancing noise reduction.
Second denoising device includes the second sound insulation vibration damper plate 6, sound panel 8, soundproof wall 7 and blower fan 10, the sound insulation
Plate 8 and soundproof wall 7 are arranged at the upper end of the second sound insulation vibration damper plate 6, and the second sound insulation vibration damper plate 6 can break off soundproof wall 7（Or every
Soundboard 8）Acoustic between ground；Mainly isolation sound is transmitted by the vibration between solid.Sound panel 8 is positioned close to become
The side in power station 1, can set sound insulation hole 17 on sound panel 8, a part of noise can be eliminated by sound insulation hole 17, while also may be used
With between soundproof wall 7 and sound panel 8, acoustical cotton is set（Mark not in the drawings）, acoustical cotton can will be travelling through sound panel 8
Noise is absorbed again.For example, can also can by the control of the gap width between soundproof wall 7 and sound panel 8 in 10 ~ 20cm
Acoustical cotton is set to fully absorb noise.Or, soundproof wall 7 is applied near the side of sound panel 8 and sets sound-deadening paint 21, and soundproof wall 7
Middle setting vacuum layer 20；Sound-deadening paint 21 and vacuum layer 20 can again lift the soundproof effect of the second denoising device, will make an uproar
Sound is accumulated between soundproof wall 7 and sound panel 8, noise is slowly absorbed by acoustical cotton.
The blower fan 10 is arranged on the upper end of soundproof wall 7 and blower fan 10 and can be rotated around the upper end of soundproof wall 7, and blower fan 10 turns
The dynamic relative angle that can adjust lower air outlet 11 and abatvoix 3；Blower fan 10 is provided with air outlet near the side of transformer station 1, institute
Stating air outlet includes upper air outlet 12 and lower air outlet 11, and upper air outlet 12 is arranged on the top of lower air outlet 11, upper air outlet 12
Output end with lower air outlet 11 with blower fan 10 is connected.Upper air outlet 12 is connected by rotating wheel 14 with the blower fan 10, rotation
Runner 14 can be rotated around blower fan 10, so that upper air outlet 12 goes out the wind of horizontal direction always.What upper air outlet 12 was produced by boasting
Wind forms a wind band for level, noise is interposed between into the lower section of wind band or changes noise transmission direction.Lower air outlet 11 is produced by boasting
Wind by changing noise transmission direction, noise is transferred back into the first denoising device, then absorbed by abatvoix 3.Lower air outlet
11 at least provided with 3, and the effect of the wind band of level can be more significantly.Furtherly, the upper end of the blower fan 10 can also be provided with
Two motors, the side of rotating wheel 14 can be provided with the 3rd gear 15, the set on the 3rd gear 15 and the second motor output end
Four gears 16 are engaged, and the second motor can drive rotating wheel 14 to rotate, so that upper air outlet 12 goes out the wind of horizontal direction always.If
When blower fan 10 is not turned on, the system just can very well realize that noise reduction is typically just not turned on blower fan 10, because blower fan 10 is opened
Open and also bring along some noises.Further, blower fan 10 can be low-noise fan 10 or Jing Yin blower fan 10.
Preferably, the upper end of the soundproof wall 7 is provided with the first motor, and the lower end of the blower fan 10 is provided with second gear
22, second gear 22 is engaged with the first gear 9 set on the first motor output end, and the first motor can drive blower fan 10 to rotate,
By adjusting the blowing direction of lower air outlet 11 of blower fan 10, noise can be more returned on abatvoix 3, then by sound-absorbing
Plate 3 absorbs.
In sum, the present invention sets three denoising devices between transformer station and residential block, by three layers of noise reduction measure
Realize the noise reduction of transformer station.Fully it is equipped between three denoising devices, effect of whole noise reduction system is carried significantly
It is high.Especially for 500kv transformer stations, the present invention has extremely strong noise reduction.
Claims (9)
1. transformer station's noise reduction system, including transformer station and denoising device, it is characterised in that the denoising device includes：Configuration exists
The second denoising device and configuration of the first denoising device on the outside of transformer station, configuration on the outside of the first denoising device are in the second drop
The sound insulation band made an uproar on the outside of device；
First denoising device includes noise reducing plate, abatvoix and the first sound insulation vibration damper plate, and the noise reducing plate and abatvoix are all provided with
Put in the upper end of the first sound insulation vibration damper plate, noise reducing plate is positioned close to the side of transformer station；
Second denoising device includes the second sound insulation vibration damper plate, sound panel, soundproof wall and blower fan, the sound panel and soundproof wall
The upper end of the second sound insulation vibration damper plate is arranged at, sound panel is positioned close to the side of transformer station, and the soundproof wall is near sound insulation
The side of plate is coated with sound-deadening paint, and soundproof wall middle setting has vacuum layer；The blower fan be arranged on the upper end of soundproof wall and
Blower fan can be rotated around the upper end of soundproof wall, and blower fan is provided with the output end of air outlet, air outlet and blower fan near the side of transformer station
Connection, air outlet includes upper air outlet and lower air outlet, and upper air outlet is arranged on the top of lower air outlet, and upper air outlet is by rotation
Runner is connected with the blower fan, and rotating wheel can be rotated around blower fan, so that upper air outlet goes out the wind of horizontal direction always.
2. transformer station's noise reduction system according to claim 1, it is characterised in that the sound panel is provided with sound insulation hole.
3. transformer station's noise reduction system according to claim 2, it is characterised in that between the soundproof wall and the sound panel
Gap width be 10 ~ 20cm.
4. transformer station's noise reduction system according to claim 3, it is characterised in that between the soundproof wall and the sound panel
It is provided with acoustical cotton.
5. transformer station's noise reduction system according to claim 1, it is characterised in that the upper end of the soundproof wall is provided with the first electricity
Machine, the lower end of the blower fan is provided with second gear, and second gear is engaged with the first gear set on the first motor output end, the
One motor can drive blower fan to rotate.
6. transformer station's noise reduction system according to claim 1 or 5, it is characterised in that the blower fan upper end is provided with the second electricity
Machine, the side of rotating wheel is provided with the 3rd gear, and the 3rd gear is engaged with the 4th gear set on the second motor output end, and second
Motor can drive rotating wheel to rotate.
7. transformer station's noise reduction system according to claim 6, it is characterised in that the upper air outlet is at least provided with 3.
8. transformer station's noise reduction system according to claim 1, it is characterised in that the sound insulation band is the sound insulation glass of vacuum
Glass.
9. transformer station's noise reduction system according to claim 1, it is characterised in that the noise reducing plate include the first noise reducing plate and
Second noise reducing plate, the first noise reducing plate is positioned close to the side of transformer station, and the first noise reducing plate sets near the side of the second noise reducing plate
There is tooth bar, the second noise reducing plate upper end is provided with the 3rd motor, the 5th wheel and rack engagement set on the 3rd motor output end, the
Three motors can drive the first noise reducing plate to lift.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710050802.7A CN106836539B (en) | 2017-01-23 | 2017-01-23 | Substation's noise reduction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710050802.7A CN106836539B (en) | 2017-01-23 | 2017-01-23 | Substation's noise reduction system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106836539A true CN106836539A (en) | 2017-06-13 |
| CN106836539B CN106836539B (en) | 2019-04-19 |
Family
ID=59120193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710050802.7A Active CN106836539B (en) | 2017-01-23 | 2017-01-23 | Substation's noise reduction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106836539B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185233A (en) * | 2018-07-20 | 2019-01-11 | 中国科学院电工研究所 | The fractal structure acoustic metamaterial device of for transformer noise reduction |
| CN113685075A (en) * | 2021-08-20 | 2021-11-23 | 南京国豪装饰安装工程股份有限公司 | Partition wall construction method and noise reduction method |
| CN113793584A (en) * | 2021-09-08 | 2021-12-14 | 广东电网有限责任公司 | Noise reduction device for power equipment |
| CN114555887A (en) * | 2019-10-14 | 2022-05-27 | 马丁.瓦科尼格 | Noise-proof device |
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| CN2097237U (en) * | 1990-05-24 | 1992-02-26 | 王毅民 | Noise reducing device |
| CN102022013A (en) * | 2010-11-05 | 2011-04-20 | 江苏省电力设计院 | Noise reduction structure of main noise resources of urban indoor substation |
| WO2012028850A1 (en) * | 2010-09-01 | 2012-03-08 | Echo Barrier Limited | Sound absorbent barrier |
| CN203049827U (en) * | 2012-12-21 | 2013-07-10 | 力帆实业(集团)股份有限公司 | Noise-reduction and sound-proof wall |
| FR3000753A1 (en) * | 2013-01-09 | 2014-07-11 | Elie Dahan | Dragson device for use in e.g. conference room, of building, has mobile structure and visual function, where device is provided with soundproof property, set of recyclable materials, and metal frame provided with metal structures |
| CN204626695U (en) * | 2015-04-14 | 2015-09-09 | 国网河南省电力公司济源供电公司 | A kind of transformer station antinoise body of wall |
| CN105735161A (en) * | 2016-04-01 | 2016-07-06 | 温州职业技术学院 | Elevated transparent vacuum acoustic panel |
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2017
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| CN2097237U (en) * | 1990-05-24 | 1992-02-26 | 王毅民 | Noise reducing device |
| WO2012028850A1 (en) * | 2010-09-01 | 2012-03-08 | Echo Barrier Limited | Sound absorbent barrier |
| CN102022013A (en) * | 2010-11-05 | 2011-04-20 | 江苏省电力设计院 | Noise reduction structure of main noise resources of urban indoor substation |
| CN203049827U (en) * | 2012-12-21 | 2013-07-10 | 力帆实业(集团)股份有限公司 | Noise-reduction and sound-proof wall |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185233A (en) * | 2018-07-20 | 2019-01-11 | 中国科学院电工研究所 | The fractal structure acoustic metamaterial device of for transformer noise reduction |
| CN109185233B (en) * | 2018-07-20 | 2020-09-18 | 中国科学院电工研究所 | Fractal structure acoustic metamaterial device for noise reduction of transformer |
| CN114555887A (en) * | 2019-10-14 | 2022-05-27 | 马丁.瓦科尼格 | Noise-proof device |
| CN113685075A (en) * | 2021-08-20 | 2021-11-23 | 南京国豪装饰安装工程股份有限公司 | Partition wall construction method and noise reduction method |
| CN113793584A (en) * | 2021-09-08 | 2021-12-14 | 广东电网有限责任公司 | Noise reduction device for power equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106836539B (en) | 2019-04-19 |
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