CN103258628B - Noise reduction system of power transformer - Google Patents
Noise reduction system of power transformer Download PDFInfo
- Publication number
- CN103258628B CN103258628B CN201310214229.0A CN201310214229A CN103258628B CN 103258628 B CN103258628 B CN 103258628B CN 201310214229 A CN201310214229 A CN 201310214229A CN 103258628 B CN103258628 B CN 103258628B
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- China
- Prior art keywords
- guide tube
- cellar
- sound guide
- noise
- shell
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Links
- 229920000742 Cotton Polymers 0.000 claims description 6
- 230000030279 gene silencing Effects 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 10
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The invention provides a kind of noise reduction system of power transformer, comprise the shell of an encirclement transformer, described shell draws a sound guide tube, and described sound guide tube passes into a cellar.As preferably, equidistantly lays tuning fork along conduit axis in described sound guide tube, the natural frequency of described tuning fork is 50HZ.This system can eliminating transformer noise to a great extent, improves the living environment of resident near transformer.
Description
Technical field
The present invention relates to electric power facility field, especially, relate to a kind of transformer noise reduction system.
Background technology
Power transformer is a kind of infrastructure device of electric power facility, generally adopts appendiron core transformer, and its power is very large.Because appendiron core transformer obtains transformation effect by alternating magnetic field, and the iron core of transformer forms by silicon steel sheet is stacking, therefore, when the frequency alternation of the magnetic field in iron core with 50Hz, silicon steel sheet is due to magnetostrictive effect, by with the frequency generation continuous shaking of 50Hz, thus produce an overcast noise, this noise has a strong impact on the daily life of transformer nearby residents.
For this problem, current method is isolation material by improving between silicon steel sheet and the sound absorbing power improving transformer shell, reduces noise as much as possible; But the improvement of this respect have received the restriction of current material and technique, can not obtain superior effect all the time, at present, the noise near transformer is still very large, seriously annoyings resident.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of noise reduction system of power transformer, this system can eliminating transformer noise to a great extent, improves the living environment of resident near transformer.
The technical scheme that technical solution problem of the present invention is taked is: this system comprises the shell of an encirclement transformer, and described shell draws a sound guide tube, and described sound guide tube passes into a cellar.
As preferably, equidistantly lays tuning fork along conduit axis in described sound guide tube, the natural frequency of described tuning fork is 50Hz.
As preferably, the spatial volume of described cellar is at more than 10 times of described enclosure volume.
As preferably, described shell, sound guide tube inwall are equipped with silencing cotton.
As preferably, the Way out of described sound guide tube and any one inner surface of described cellar tilt, and this makes the noise of discharging from sound guide tube outlet no longer be directly mirrored back guide wire, significantly increases the order of reflection of noise in cellar.
As preferably, the bottom surface of described cellar is uneven, thus can provide a large amount of reflectings surface for the noise of all directions.
As preferably, layer of fine sand is at least laid in described cellar on bottom surface, because stacking fine sand has a large amount of gap structures, therefore, so lay can be extremely low cost obtain good sound-absorbing effect.
Beneficial effect of the present invention: by the connection of sound guide tube, the transformer noise of described enclosure is made to be imported in cellar by sound guide tube, because the volume of cellar is much larger than the volume of described shell, therefore, the reflection on a large scale of noise will be carried out in cellar, thus make the noise energy loss of the overwhelming majority in cellar, and only remaining a small amount of noise energy is in described shell, therefore, the noise outwardly propagated through shell obtains and significantly reduces.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of this noise reduction system of power transformer embodiment.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described:
In the embodiment shown in fig. 1, comprise the shell 2 of an encirclement transformer 1, described shell 2 draws a sound guide tube 3, and described sound guide tube 3 passes into a cellar 4.
Because described sound guide tube 3 has been communicated with shell 2 and cellar 4, therefore, noise in shell 2 inside is whenever being reflected onto sound guide tube 3 place, just will be imported into cellar 4 along sound guide tube 3, and do not reflex to the noise at sound guide tube 3 place, by the multiple reflections of shell 2 inwall, finally also sound guide tube 3 will be reflected onto, and in final importing cellar 4; Certainly, imported the noise in described cellar 4, also likely by reflection, again shell 2 is led back to along sound guide tube 3, but because the mouth of pipe of sound guide tube 3 is relative to each wall of cellar, size is very limited, therefore, will again be reflected into sound guide tube 3 in cellar 4 from noise, its probability is very little, generally, imported the noise of cellar 4 from shell 2 by sound guide tube 3, substantially all can run out through a large amount of reflections in cellar 4.
In addition, in the present embodiment, also in sound guide tube 3, a large amount of tuning forks 5 is arranged along conduit axis, the natural frequency of tuning fork is identical with frequency noise, be 50Hz, this sound guide tube 3 is not only possessed good leading note effect, and possess splendid erasure effect; Its reason is: for the noise flowed in shell 2 in cellar 4, due to the resonance effects of tuning fork 5, will absorb a large amount of noise energy (change into vibrational energy, and be finally converted into heat energy) fast, and does not affect remaining noise energy and flow to cellar 4; For the noise flowing to shell 2 from cellar 4, tuning fork 5 will absorb large energy equally; As can be seen here, due to the laying of tuning fork 5, noise can be made from shell 2 to cellar 4, then from the round way of cellar 4 to shell 2, be consumed in a large number, to such an extent as to make the noise in cellar 4 almost cannot be reflected back toward shell 2 again.Can be as what compare, if fill in silencing cotton in a large number in sound guide tube 3, then the sound-absorbing effect of sound guide tube 3 significantly improves, and but cannot play leading note effect, there is not the noise by silencing cotton absorbs cannot enter cellar 4 more in a large number, and shell 2. will be reflected back by silencing cotton
Because the spatial volume be communicated with sound guide tube 3 is larger, then noise reflex time each time in this space, the probability being reflected back toward sound guide tube 3 is lower; Therefore, if the probability that the noise in cellar 4 is reflected into sound guide tube 3 is P2, and the probability that the noise in shell 2 is reflected into sound guide tube 3 is P1, in order to make P2 much smaller than P1, the spatial volume of cellar then must be made much larger than enclosure volume, usually, the spatial volume of described cellar 4 can be made at more than 10 times of described shell 2 volume.
In addition, described shell 2, sound guide tube 3 inwall all can lay silencing cotton.
The bottom surface of described cellar 4 is uneven, thus can provide a large amount of reflectings surface for the noise of all directions.Layer of fine sand is at least laid in described cellar 4 on bottom surface, and because stacking fine sand has a large amount of gap structures, therefore, the cost that so laying can be extremely low obtains good sound-absorbing effect.
The foregoing is only preferred mode of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a noise reduction system of power transformer, comprises the shell (2) of an encirclement transformer (1), and described shell draws a sound guide tube (3), and described sound guide tube passes into a cellar (4); It is characterized in that: equidistantly lay tuning fork (5) along conduit axis in described sound guide tube (3), the natural frequency of described tuning fork (5) is 50Hz.
2. noise reduction system of power transformer according to claim 1, is characterized in that: the spatial volume of described cellar (4) is at more than 10 times of described shell (2) volume.
3. noise reduction system of power transformer according to claim 1 and 2, is characterized in that: described shell (2), sound guide tube (3) inwall are equipped with silencing cotton.
4. noise reduction system of power transformer according to claim 1, is characterized in that: the bottom surface of described cellar (4) is uneven.
5. according to noise reduction system of power transformer according to claim 1, it is characterized in that: described cellar (4) lay layer of fine sand on bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310214229.0A CN103258628B (en) | 2013-06-03 | 2013-06-03 | Noise reduction system of power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310214229.0A CN103258628B (en) | 2013-06-03 | 2013-06-03 | Noise reduction system of power transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103258628A CN103258628A (en) | 2013-08-21 |
| CN103258628B true CN103258628B (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310214229.0A Expired - Fee Related CN103258628B (en) | 2013-06-03 | 2013-06-03 | Noise reduction system of power transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN103258628B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106981285A (en) * | 2017-03-28 | 2017-07-25 | 联想(北京)有限公司 | A kind of noise-reduction method and robot system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200990272Y (en) * | 2006-12-27 | 2007-12-12 | 浙江江山变压器有限公司 | Dry transformer sound absorption shell |
| CN201222394Y (en) * | 2008-06-30 | 2009-04-15 | 广州广高高压电器有限公司 | Denoise case for dry transformer |
| CN201616322U (en) * | 2010-03-16 | 2010-10-27 | 天威保变(合肥)变压器有限公司 | Noise-reducing oil tank for power transformer |
| CN202678038U (en) * | 2012-07-09 | 2013-01-16 | 福建省电力有限公司电力科学研究院 | Box-type low noise magnetically controlled reactor |
| CN202888691U (en) * | 2012-10-29 | 2013-04-17 | 南京乾鑫电器设备有限公司 | Buried high-capacity prefabricated substation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56140683A (en) * | 1980-04-04 | 1981-11-04 | Nec Corp | Piezoelectric transformer |
-
2013
- 2013-06-03 CN CN201310214229.0A patent/CN103258628B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200990272Y (en) * | 2006-12-27 | 2007-12-12 | 浙江江山变压器有限公司 | Dry transformer sound absorption shell |
| CN201222394Y (en) * | 2008-06-30 | 2009-04-15 | 广州广高高压电器有限公司 | Denoise case for dry transformer |
| CN201616322U (en) * | 2010-03-16 | 2010-10-27 | 天威保变(合肥)变压器有限公司 | Noise-reducing oil tank for power transformer |
| CN202678038U (en) * | 2012-07-09 | 2013-01-16 | 福建省电力有限公司电力科学研究院 | Box-type low noise magnetically controlled reactor |
| CN202888691U (en) * | 2012-10-29 | 2013-04-17 | 南京乾鑫电器设备有限公司 | Buried high-capacity prefabricated substation |
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|---|---|
| CN103258628A (en) | 2013-08-21 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Yingquan Inventor after: Wang Fengtao Inventor after: Ma Haixu Inventor after: Dang Xiao Inventor after: Sun Qingzhen Inventor before: Ma Renhuan |
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| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20151124 Address after: Bole City, 833499 the Xinjiang Uygur Autonomous Region Mongolia Autonomous Prefecture Bortala Unicom Road No. 82 Applicant after: Bortala electric company of Guo Wang Xinjiang power company Applicant after: State Grid Corporation of China Address before: 628, room 1, Shunda Commercial Plaza, Suzhou Industrial Park, Jiangsu, 215000 Applicant before: Suzhou Qizhi Electromechanical Technology Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20160603 |