CN105429012A - Noise reduction device for reducing low-frequency noises of transformer station based on foam aluminium alloy - Google Patents

Noise reduction device for reducing low-frequency noises of transformer station based on foam aluminium alloy Download PDF

Info

Publication number
CN105429012A
CN105429012A CN201510749154.5A CN201510749154A CN105429012A CN 105429012 A CN105429012 A CN 105429012A CN 201510749154 A CN201510749154 A CN 201510749154A CN 105429012 A CN105429012 A CN 105429012A
Authority
CN
China
Prior art keywords
aluminium alloy
foam aluminium
stainless steel
transformer station
layer
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.)
Pending
Application number
CN201510749154.5A
Other languages
Chinese (zh)
Inventor
杜好阳
徐清山
陈新
聂京凯
潘玉龙
孔晓峰
王斌
杨坚
唐永贺
苏欣
肖辉旭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Jilin Electric Power Co Ltd
Jinhua Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Smart Grid Research Institute of SGCC
Original Assignee
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Jilin Electric Power Co Ltd
Jinhua Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Smart Grid Research Institute of SGCC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Jilin Electric Power Co Ltd, Jinhua Power Supply Co of State Grid Zhejiang Electric Power Co Ltd, Smart Grid Research Institute of SGCC filed Critical State Grid Corp of China SGCC
Priority to CN201510749154.5A priority Critical patent/CN105429012A/en
Publication of CN105429012A publication Critical patent/CN105429012A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor

Abstract

The invention discloses a noise reduction device for reducing low-frequency noises of a transformer station based on a foam aluminium alloy. The device comprises a single-side micropore stainless steel panel and three zinc-plated stainless steel panels, wherein the single-side micropore stainless steel panel and three zinc-plated stainless steel panels are fixed together through screws to form a four-side closed cube-shaped structure. The interior of the four-side closed cube-shaped structure is sequentially provided with a foam aluminium alloy layer, a sound absorption asbestos layer and an air layer along one side of the single-side micropore stainless steel panel. A keel is disposed between the sound absorption asbestos layer and the air layer. The foam aluminium alloy layer is horizontally provided with a through hole. The device employs the foam aluminium alloy as the main body material, is good in sound absorption effect, is light in overall weight, is convenient for installation and transportation, directly forms a resonance cavity during installation, and facilitates the reduction of the low-frequency noises.

Description

A kind of denoising device of the reduction transformer station low-frequency noise based on foam aluminium alloy
Technical field
The invention belongs to noise reducing apparatus technical field, relate to a kind of denoising device of the reduction transformer station low-frequency noise based on foam aluminium alloy.
Background technology
In recent years, the propelling of urbanization process is progressively raised speed, and industry and resident increase swift and violent to need for electricity, increasing substation location is deep into down town.But in short supply due to urban land resource, also exacerbates the difficulty of substation site selection, causes the close together of part transformer station and residential block.The law of environmental protection simultaneously, improving of regulation and improving constantly of Public environmental attitude, consciousness and the cry of noise control pollution, protection of the environment are also more and more higher.During the peak of power consumption of particularly northern area winter and summer, the load factor of transformer station is all very high, and noise is larger; Even underground substation, noise is also the problem that can not be ignored.The resident caused due to noise in recent years complains the trend risen year by year, and the harm problem of noise pollution to surrounding resident resolving transformer station has become the task of top priority of power department.In " State Council's environment Macroscopic Strategy ", power industry transformer station has clearly been classified as noise regulation emphasis, China 2008 will promulgate mandatory noise emission standard " GB12348-2008 Industrial Enterprise Factory Boundary ambient noise discharge standard " end of the year, propose more strict requirement to transformer station in interior industrial enterprise.
Summary of the invention
The object of this invention is to provide a kind of denoising device of the reduction transformer station low-frequency noise based on foam aluminium alloy, solve the problem that the transformer substation in city noise that exists in prior art exceeds standard.
The technical solution adopted in the present invention is, a kind of denoising device of the reduction transformer station low-frequency noise based on foam aluminium alloy, comprise a slice one side micropore stainless steel faceplate and three zinc-plated stainless steel faceplates, described one side micropore stainless steel faceplate and zinc-plated stainless steel faceplate adopt screw to be fixed together, form circumferential closed square body structure, the inside of described square body structure is disposed with foam aluminium alloy layer, sound absorption asbestos layer and air layer along the side of one side micropore stainless steel faceplate.
Further, absorb sound between asbestos layer and air layer and be provided with keel.
Further, on foam aluminium alloy layer, level offers through hole, and the diameter of described through hole is 4mm ~ 6mm, and the spacing of described through hole is 18mm ~ 22mm.
Further, the thickness of foam aluminium alloy layer is 20mm.
Further, in foam aluminium alloy layer, the average diameter of closed foam is 5mm, and mean porosities is 50 ~ 60%.
Further, the thickness of one side micropore stainless steel faceplate and zinc-plated stainless steel faceplate is 1mm.
Further, one side micropore surface stainless steel strip micropore one facing to the outside of square shape structure, the diameter of described micropore is 1.4mm ~ 1.6mm, and the degree of depth is 0.18mm ~ 0.22mm.
Further, the thickness of sound absorption asbestos layer is 30mm.
Further, the thickness of air layer is 80mm ~ 120mm.
The invention has the beneficial effects as follows:
1. adopt foam aluminium alloy as material of main part, acoustically effective is good, is applicable to low-frequency noise;
2. overall structure is that aluminium alloy, stainless steel, fire line are good;
3. overall structure has good corrosion resistance, weatherability, and under low temperature and adverse circumstances, noise reduction hydraulic performance decline degree is low;
4. do not produce dust, there is no peculiar smell, there is no radiation, good environmental protection;
5. basis material and overall structure are metal material, possess the ability of anti-electromagnetic radiation;
6. overall structure has certain intensity, can bear external impact and distortion;
7. overall weight is light, is convenient to install and transport, directly forms resonating cativty during installation, is conducive to reducing low-frequency noise.
Accompanying drawing explanation
Fig. 1 is a kind of structure chart of denoising device of the reduction transformer station low-frequency noise based on foam aluminium alloy.
In figure, 1. one side micropore stainless steel faceplate, 2. foam aluminium alloy layer, 3. absorb sound asbestos layer, 4. air layer, 5. zinc-plated stainless steel faceplate, 6. keel, 7. through hole.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The denoising device of a kind of reduction transformer station low-frequency noise based on foam aluminium alloy of the present invention, structure as shown in Figure 1, comprise a slice one side micropore stainless steel faceplate 1 and three zinc-plated stainless steel faceplates 5, one side micropore stainless steel faceplate 1 and zinc-plated stainless steel faceplate 5 adopt screw to be fixed together, form circumferential closed square body structure, the inside of square body structure is disposed with foam aluminium alloy layer 2 along the side of one side micropore stainless steel faceplate 1, sound absorption asbestos layer 3 and air layer 4, keel 6 are provided with between sound absorption asbestos layer 3 and air layer 4, on foam aluminium alloy layer 2, level offers through hole 7.
The material of one side micropore stainless steel faceplate 1 is the corrosion resistant plate of thickness 1mm, sound source side external surface micro-pore diameter is 1.4mm ~ 1.6mm, the degree of depth is 0.18mm ~ 0.22mm, mainly plays and carries out absorption and irreflexive effect to low frequency transformer station noise, forms attenuation of the first kind.
Be provided with cap holes in foam aluminium alloy layer 2, the average diameter of closed foam is 5mm, and mean porosities is 50 ~ 60%.Best to the assimilation effect of low-frequency noise through this porosity of test.As closed foam, closed-cell aluminum foam surface is coarse on microcosmic.When being subject to sound wave effect, the air contained in hole produce under sound wave effect vibration and with hole wall friction, formed frictional heat; Simultaneously as the longitudinal sound wave propagated in atmosphere, compress the air in closed pore and stretch, part acoustic energy is also converted into heat energy by this process.Above-mentioned two kinds of conversions can not counter movement, serves main attenuation to sound wave.Foam aluminium alloy hole wall is generally less than 0.5mm, has certain deformability, and hole wall vibration also can play the effect of noise elimination.Also there is the irregular defect of part foamed aluminium inside, such as the hole defect such as triangle, taper, also plays and necessarily absorbs Burning in Effect of Sound Energy.
On foam aluminium alloy layer 2, level offers through hole 7, and the diameter of through hole 7 is 4mm ~ 6mm, and spacing is 18mm ~ 22mm, adds the number of times of sound wave reflection and refraction, improves the sound absorption efficiency of low-frequency sound wave.
The effect of sound absorption asbestos layer 3 is to carry out absorption process to the sound wave of upper frequency further.The thickness chosen through calculating is 30mm, can reach good acoustically effective.
Being provided with keel 6 after sound absorption asbestos layer 3, is to support sound absorption structure on the one hand, is increase sound path on the other hand.
Air layer 4 is in order to sound wave forms resonance therein, realizes the further consumption to acoustic energy.Thickness acoustically effective between 80-120mm through calculating air layer 4 is best.
Test through Chinese Academy of Sciences's acoustic metrology testing station (CMA2013000227K), (report number KS-2015-04102) is based on Reverberation room method test acoustic absorptivity, detect according to GB/T20247-2006/ISO354:2003 " acoustic absorptivity measurements of acoustic reverberation room ", as shown in table 1 to the acoustically effective of main frequency.
Table 1
Frequency (Hz) 125 160 200 250 400 500 1000 2500 3150
Acoustic absorptivity α 0.59 0.93 0.98 0.81 0.73 0.66 0.59 0.67 0.87
Table 1 can find out that the present invention all has higher acoustic absorptivity to main frequency.
Build fire proofing material detection Co., Ltd (CMA201307157R) through Jilin profit urban construction test and provide examining report, the fire-protection rating of foamed material reaches A1, is the highest ranking of fire-fighting quipment.
Test through Metal Inst., Chinese Academy of Sciences and provide test report, Material compression intensity is 13.83N/mm2, possesses bearing capacity; After stretching, elongation after fracture reaches 98.75%, has high deformability, can adapt to the distortion that low-frequency sound wave causes; Porosity is 53.56%, can produce maximum decay, realize noise reduction requirement to low-frequency noise.

Claims (9)

1. the denoising device based on the reduction transformer station low-frequency noise of foam aluminium alloy, it is characterized in that, comprise a slice one side micropore stainless steel faceplate (1) and three zinc-plated stainless steel faceplates (5), described one side micropore stainless steel faceplate (1) and zinc-plated stainless steel faceplate (5) adopt screw to be fixed together, form circumferential closed square body structure, the inside of described square body structure is disposed with foam aluminium alloy layer (2), sound absorption asbestos layer (3) and air layer (4) along the side of one side micropore stainless steel faceplate (1).
2. the denoising device of a kind of reduction transformer station low-frequency noise based on foam aluminium alloy according to claim 1, is characterized in that, be provided with keel (6) between described sound absorption asbestos layer (3) and air layer (4).
3. the denoising device of a kind of reduction transformer station low-frequency noise based on foam aluminium alloy according to claim 1, it is characterized in that, the upper level of described foam aluminium alloy layer (2) offers through hole (7), the diameter of described through hole (7) is 4mm ~ 6mm, and the spacing of described through hole (7) is 18mm ~ 22mm.
4. the denoising device of a kind of reduction transformer station low-frequency noise based on foam aluminium alloy according to claim 3, it is characterized in that, the thickness of described foam aluminium alloy layer (2) is 20mm.
5. the denoising device of a kind of reduction transformer station low-frequency noise based on foam aluminium alloy according to claim 4, is characterized in that, in described foam aluminium alloy layer (2), the average diameter of closed foam is 5mm, and mean porosities is 50 ~ 60%.
6. the denoising device of a kind of reduction transformer station low-frequency noise based on foam aluminium alloy according to claim 1, it is characterized in that, the thickness of described one side micropore stainless steel faceplate (1) and zinc-plated stainless steel faceplate (5) is 1mm.
7. the denoising device of a kind of reduction transformer station low-frequency noise based on foam aluminium alloy according to claim 6, it is characterized in that, described one side micropore stainless steel faceplate (1) band micropore one facing to the outside of square shape structure, the diameter of described micropore is 1.4mm ~ 1.6mm, and the degree of depth is 0.18mm ~ 0.22mm.
8. the denoising device of a kind of reduction transformer station low-frequency noise based on foam aluminium alloy according to claim 1, it is characterized in that, the thickness of described sound absorption asbestos layer (3) is 30mm.
9. the denoising device of a kind of reduction transformer station low-frequency noise based on foam aluminium alloy according to claim 1, it is characterized in that, the thickness of described air layer (4) is 80mm ~ 120mm.
CN201510749154.5A 2015-11-06 2015-11-06 Noise reduction device for reducing low-frequency noises of transformer station based on foam aluminium alloy Pending CN105429012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510749154.5A CN105429012A (en) 2015-11-06 2015-11-06 Noise reduction device for reducing low-frequency noises of transformer station based on foam aluminium alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510749154.5A CN105429012A (en) 2015-11-06 2015-11-06 Noise reduction device for reducing low-frequency noises of transformer station based on foam aluminium alloy

Publications (1)

Publication Number Publication Date
CN105429012A true CN105429012A (en) 2016-03-23

Family

ID=55507030

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510749154.5A Pending CN105429012A (en) 2015-11-06 2015-11-06 Noise reduction device for reducing low-frequency noises of transformer station based on foam aluminium alloy

Country Status (1)

Country Link
CN (1) CN105429012A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108253858A (en) * 2018-01-16 2018-07-06 中国工程物理研究院流体物理研究所 A kind of anti-knock container sound-insulating structure and its design method

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2694425Y (en) * 2004-04-16 2005-04-20 陈月萍 Micro-boring acoustic board
CN2712945Y (en) * 2004-03-02 2005-07-27 江苏大学 Perforated sound-absorbing foam aluminum
CN101334993A (en) * 2008-08-04 2008-12-31 中国科学院力学研究所 Noise absorbing compound material based on network construction and preparing method thereof
CN201314084Y (en) * 2008-11-17 2009-09-23 楚杏芬 Metallic panel absorber
CN203160444U (en) * 2013-03-28 2013-08-28 国家电网公司 Structure of sound attenuation wall surface of transformer substation
CN203398525U (en) * 2013-08-30 2014-01-15 国家电网公司 Noise-reducing and sound-absorbing device for transformer substation
CN103541450A (en) * 2013-10-19 2014-01-29 宁夏天地经纬电力设备工程有限公司 Transformer noise-absorbing denoising structure
CN203626072U (en) * 2013-11-29 2014-06-04 徐香春 Novel sound absorbing plate
CN203626071U (en) * 2013-11-29 2014-06-04 徐香春 Sound absorbing plate
CN204356925U (en) * 2014-12-17 2015-05-27 国家电网公司 A kind of indoor substation low frequency absorption denoising device
CN204715233U (en) * 2015-06-24 2015-10-21 湖北工业大学 A kind of expressway sound insulation illumination baffle based on flexible solar plate
CN204728522U (en) * 2015-06-29 2015-10-28 江苏五环建设有限公司 A kind of sound-proof wall body structure

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2712945Y (en) * 2004-03-02 2005-07-27 江苏大学 Perforated sound-absorbing foam aluminum
CN2694425Y (en) * 2004-04-16 2005-04-20 陈月萍 Micro-boring acoustic board
CN101334993A (en) * 2008-08-04 2008-12-31 中国科学院力学研究所 Noise absorbing compound material based on network construction and preparing method thereof
CN201314084Y (en) * 2008-11-17 2009-09-23 楚杏芬 Metallic panel absorber
CN203160444U (en) * 2013-03-28 2013-08-28 国家电网公司 Structure of sound attenuation wall surface of transformer substation
CN203398525U (en) * 2013-08-30 2014-01-15 国家电网公司 Noise-reducing and sound-absorbing device for transformer substation
CN103541450A (en) * 2013-10-19 2014-01-29 宁夏天地经纬电力设备工程有限公司 Transformer noise-absorbing denoising structure
CN203626072U (en) * 2013-11-29 2014-06-04 徐香春 Novel sound absorbing plate
CN203626071U (en) * 2013-11-29 2014-06-04 徐香春 Sound absorbing plate
CN204356925U (en) * 2014-12-17 2015-05-27 国家电网公司 A kind of indoor substation low frequency absorption denoising device
CN204715233U (en) * 2015-06-24 2015-10-21 湖北工业大学 A kind of expressway sound insulation illumination baffle based on flexible solar plate
CN204728522U (en) * 2015-06-29 2015-10-28 江苏五环建设有限公司 A kind of sound-proof wall body structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108253858A (en) * 2018-01-16 2018-07-06 中国工程物理研究院流体物理研究所 A kind of anti-knock container sound-insulating structure and its design method

Similar Documents

Publication Publication Date Title
CN202249622U (en) Ventilating noise-elimination window for transformer station
CN204356925U (en) A kind of indoor substation low frequency absorption denoising device
CN205177403U (en) Noise reduction sound absorption layer
CN202176026U (en) Microporous fiber composite acoustic board
CN205178284U (en) Structure of making an uproar is fallen based on foamed aluminium metal reduces city transformer substation low -frequency noise
CN105429012A (en) Noise reduction device for reducing low-frequency noises of transformer station based on foam aluminium alloy
CN204164042U (en) A kind of air exhausting soundproofing elbow for 35kV transformer chamber
CN204264408U (en) A kind of floating base plate for cabin noise reduction
CN205637714U (en) Sound arrestor of methane electrical generation set
CN203895113U (en) Composite low frequency resonance sound absorption structure
CN202731006U (en) Heat insulation and heat preservation wall
CN201704816U (en) Industrial noise control device
CN201679416U (en) Sound-absorbing and ventilating window
CN201326584Y (en) Silencing component for silencer
CN103485891B (en) A kind of quickly-assembling type noise elimination sound-insulating cover for mobile diesel generator
CN201689671U (en) Foamed aluminum sound absorbing plate
CN203201808U (en) Roots blower pipeline noise reduction device
CN204385639U (en) A kind of foamed aluminium sound-absorbing muffler being arranged on sound barrier top and using
CN204288795U (en) A kind of sound-proof sound-absorbing plate
CN209277312U (en) A kind of large size computer room noise eliminating silencer
CN203051227U (en) Low-noise centrifugal ventilating fan enclosure
CN210569007U (en) Corner ventilation noise eliminator for silent room
CN202205566U (en) Noise-reducing device for converter transformer
CN2931615Y (en) Fire retardant insulating composite sound-absorption device
Xu Control Measurements And Evaluation Of Cooling Tower Noise

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20160323

RJ01 Rejection of invention patent application after publication