CN103541450A - Transformer noise-absorbing denoising structure - Google Patents
Transformer noise-absorbing denoising structure Download PDFInfo
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- CN103541450A CN103541450A CN201310490703.2A CN201310490703A CN103541450A CN 103541450 A CN103541450 A CN 103541450A CN 201310490703 A CN201310490703 A CN 201310490703A CN 103541450 A CN103541450 A CN 103541450A
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Abstract
The invention discloses a transformer noise-absorbing denoising structure which comprises a transformer chamber wall body, a keel, a ceramic noise-absorbing plate and a porous foam metal layer. The wall body and the ceramic noise-absorbing plate are fixed by the keel, an air layer is formed between the wall body and the ceramic noise-absorbing plate, and the porous foam metal layer is stuck on the back of the ceramic noise-absorbing plate and the inner side of the keel. The transformer noise-absorbing denoising structure is light in weight, high in strength, simple in structure, convenient to mount and low in manufacturing cost. Noise-absorbing effect of both a ceramic noise-absorbing material and porous foam is utilized, and a resonance system formed by the ceramic noise-absorbing plate and the air layer is utilized, so that noise in a transformer chamber can be lowered by 20-25dB.
Description
Technical field
The invention belongs to transformer manufacture technology, particularly a kind of absorbing sound and lowering noise structure of transformer.
Background technology
In recent years along with the development of urban construction, industry and electricity consumption of resident increase all very fast, at house and public place, have used more and more high-power transformer, and this has just proposed certain requirement to the noise of high-power transformer and Transformer.The noise problem of transformer receives people's concern more and more.How to reduce transformer noise and become transformer manufacturing industry urgent problem.
Existing transformer noise reduction measure mainly contains following two kinds:
(1) reduce the noise of transformer itself: the magnetic that transformer noise is mainly derived from silicon steel sheet stretches, so can be to the noise reduction of transformer own, on the one hand can reduce work magnetic unshakable in one's determination close, adopt high magnetic conduction silicon steel sheet, adopt stepping tower to connect technique etc. to make that magnetic is flexible to be reduced; Can, by improving clamp structure unshakable in one's determination and lead-in wire, on iron core surface, be coated with epoxy paint and adopt the measure noise reductions such as valve rubber on the other hand.
(2) in transformer room, adopt the measure of sound absorption material: by sound absorption materials such as the glass wool of soft porous, foamed plastics, felt, cotton-wool, caprone fiber, mineral wools, be pasted on wall and ceiling on, or make sound absorber and be suspended on space.
But the first measure meeting increases the cost of transformer greatly; although second method is cheap; but the fire prevention of the organic fibrous material such as felt, cotton-wool and humidity resistance are poor; and the shortcoming of the inorganic fibers such as glass wool, mineral wool is that fibroid is crisp; easily fracture and form dust dissipation and contaminated environment; and flexible structure, surface needs matcoveredn.
Summary of the invention
The object of the invention is to solve above-mentioned in esse problem, inexpensive, simple in structure, the long-lived transformer absorbing sound and lowering noise of a kind of light weight structure is provided.
For achieving the above object, the technical solution used in the present invention is as follows: a kind of transformer absorbing sound and lowering noise structure, comprise transformer room's body of wall, keel, ceramic abatvoix, porous foam metal layer, between described body of wall and ceramic abatvoix, by keel, fixed, between described body of wall and ceramic abatvoix, form air layer, described porous foam metal layer lining is attached to the ceramic abatvoix back side and keel inner side.
Described air layer thickness 30-100mm;
The making material of described porous foam metal layer is any one in Al, Ni, Cu, Mg low-melting-point metal and alloy thereof;
The porosity of described porous foam metal layer is 60-98%;
Described ceramic abatvoix density is 0.55-0.75; Porosity is 78-83%.
Principle: ceramic abatvoix and there is certain thickness air layer below and form a resonator system, when noise ripple is mapped on ceramic abatvoix, part noise ripple is absorbed or reflects back by ceramic abatvoix, a noise ripple will evoke the vibration of ceramic abatvoix, vibration makes acoustic energy change into heat energy, also has fraction can pass ceramic abatvoix.Fraction noise through ceramic abatvoix is further absorbed by porous foam metal layer, thereby the noise that enabled to propagate into outside transformer body of wall is very limited.
Pottery damping material quality is light, intensity is high, cheap, does not have inorganic fibers to affect the shortcoming of environmental protection, again because it is rigid body, and the surface layer that do not need protection, structure is relatively simple; There is no organic fiber fire prevention, the poor shortcoming of moisture resistance yet; And compare with foamed plastics, foam glass, ceramic sound-absorbing material is high temperature resistant, and durable in use.
Porous foam metal is a kind of metal material that contains the hole of some, certain size aperture, certain porosity in metallic matrix.Because its structure is special, therefore possessed many-sided property.As structural meterials, it has the feature of lightweight, high specific strength; As functional material, it has the multiple physical properties such as porous, vibration damping, damping, sound-absorbing, sound insulation, heat radiation, impact-absorbing energy, electromagnetic shielding.
Beneficial effect: lightweight of the present invention, high strength, simple in structure, easy for installation, cost economic.Utilize the dual sound absorption of ceramic damping material and porous foam, utilize the reducing noise 20-25dB in the resonator system ，Ke Jiang transformer room that ceramic abatvoix and air layer form simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
The body of wall 2-of ，1-transformer room keel 3-pottery abatvoix 4-air layer 5-porous foam metal layer wherein
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.A kind of transformer absorbing sound and lowering noise structure, comprise transformer room's body of wall 1, keel 2, ceramic abatvoix 3, porous foam metal layer 5, between described body of wall 1 and ceramic abatvoix 3, by keel 2, fixed, between described body of wall and 1 ceramic abatvoix 3, form air layer 4, described porous foam metal layer 5 lining are attached to ceramic abatvoix 3 back sides and keel 2 inner sides.
Described air layer 4 thickness are 50mm;
The making material of described porous foam metal layer 5 is Al alloy;
The porosity of described porous foam metal layer 5 is 90%;
Described ceramic abatvoix 2 density are 0.6; Porosity is 80%.
Claims (5)
1. a transformer absorbing sound and lowering noise structure, it is characterized in that, comprise transformer room's body of wall, keel, ceramic abatvoix, porous foam metal layer, between described body of wall and ceramic abatvoix, by keel, fixed, between described body of wall and ceramic abatvoix, form air layer, described porous foam metal layer lining is attached to the ceramic abatvoix back side and keel inner side.
2. a kind of transformer absorbing sound and lowering noise structure according to claim 1, is characterized in that, described air layer thickness is 30-100mm.
3. a kind of transformer absorbing sound and lowering noise structure according to claim 1, is characterized in that, the making material of described porous foam metal layer is any in Al, Ni, Cu, Mg low-melting-point metal and alloy thereof.
4. according to a kind of transformer absorbing sound and lowering noise structure described in claim 1 or 3, it is characterized in that, the porosity of described porous foam metal layer is 60-98%.
5. a kind of transformer absorbing sound and lowering noise structure according to claim 1, is characterized in that, described ceramic abatvoix density is 0.55-0.75; Porosity is 78-83%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310490703.2A CN103541450A (en) | 2013-10-19 | 2013-10-19 | Transformer noise-absorbing denoising structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310490703.2A CN103541450A (en) | 2013-10-19 | 2013-10-19 | Transformer noise-absorbing denoising structure |
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| CN103541450A true CN103541450A (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310490703.2A Pending CN103541450A (en) | 2013-10-19 | 2013-10-19 | Transformer noise-absorbing denoising structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161089A (en) * | 2015-06-17 | 2015-12-16 | 成都斯铂润音响设备有限公司 | Sound absorbing device |
| CN105429012A (en) * | 2015-11-06 | 2016-03-23 | 国网吉林省电力有限公司电力科学研究院 | Noise reduction device for reducing low-frequency noises of transformer station based on foam aluminium alloy |
| CN111734008A (en) * | 2020-08-10 | 2020-10-02 | 中国建筑一局(集团)有限公司 | Composite noise reduction wall and manufacturing method thereof |
| CN113099852A (en) * | 2021-05-12 | 2021-07-13 | 伍玉军 | Corn thresher for food processing |
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| JPH08320692A (en) * | 1995-05-24 | 1996-12-03 | Mitsubishi Heavy Ind Ltd | Dripproof type sound absorbing panel |
| JPH09273241A (en) * | 1996-04-05 | 1997-10-21 | East Japan Railway Co | Noise absorption and insulation body |
| CN201576548U (en) * | 2009-12-29 | 2010-09-08 | 深圳市奥电高压电气有限公司 | Denoise structure of power transformer |
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| CN202627252U (en) * | 2012-06-20 | 2012-12-26 | 江苏建筑职业技术学院 | Dual-sound-insulation wall structure of building |
| CN203546929U (en) * | 2013-10-19 | 2014-04-16 | 宁夏天地经纬电力设备工程有限公司 | Sound absorption and noise reduction structure for transformer |
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2013
- 2013-10-19 CN CN201310490703.2A patent/CN103541450A/en active Pending
Patent Citations (6)
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| JPH08320692A (en) * | 1995-05-24 | 1996-12-03 | Mitsubishi Heavy Ind Ltd | Dripproof type sound absorbing panel |
| JPH09273241A (en) * | 1996-04-05 | 1997-10-21 | East Japan Railway Co | Noise absorption and insulation body |
| CN201576548U (en) * | 2009-12-29 | 2010-09-08 | 深圳市奥电高压电气有限公司 | Denoise structure of power transformer |
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| CN202627252U (en) * | 2012-06-20 | 2012-12-26 | 江苏建筑职业技术学院 | Dual-sound-insulation wall structure of building |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161089A (en) * | 2015-06-17 | 2015-12-16 | 成都斯铂润音响设备有限公司 | Sound absorbing device |
| CN105161089B (en) * | 2015-06-17 | 2019-10-15 | 成都斯铂润音响设备有限公司 | A kind of sound absorber |
| CN105429012A (en) * | 2015-11-06 | 2016-03-23 | 国网吉林省电力有限公司电力科学研究院 | Noise reduction device for reducing low-frequency noises of transformer station based on foam aluminium alloy |
| CN111734008A (en) * | 2020-08-10 | 2020-10-02 | 中国建筑一局(集团)有限公司 | Composite noise reduction wall and manufacturing method thereof |
| CN113099852A (en) * | 2021-05-12 | 2021-07-13 | 伍玉军 | Corn thresher for food processing |
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Application publication date: 20140129 |