CN102709025A - Low-noise transformer shell - Google Patents
Low-noise transformer shell Download PDFInfo
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- CN102709025A CN102709025A CN2012100006687A CN201210000668A CN102709025A CN 102709025 A CN102709025 A CN 102709025A CN 2012100006687 A CN2012100006687 A CN 2012100006687A CN 201210000668 A CN201210000668 A CN 201210000668A CN 102709025 A CN102709025 A CN 102709025A
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Abstract
The invention provides a low-noise transformer shell which is applicable to power transformers composed of iron cores and coils. The low-noise transformer shell comprises an inner shell and an outer shell, a transformer stator composed of an iron core and a coil is arranged in the inner shell, a pore cluster is arranged at the center of each surface of the inner shell, and silencing cotton is arranged on the outer surface of the inner shell and on the inner surface of the outer shell. By the transformer shell, low-frequency noise can be converted into high-frequency noise to be efficiently absorbed by the silencing cotton on the outer surface of the inner shell and on the inner surface of the outer shell, transformer noise is greatly reduced, and ambient environments are improved.
Description
Technical field
The present invention relates to basic electric power facility field, especially, is a kind of shell of the power transformer that is made up of silicon steel sheet and coil.
Background technology
[0002] in civilian supply of electric power field, adopt high-tension electricity to transmit electricity usually, so can reduce the loss of electric current on power transmission line; Near the user side place, need set up transformer station usually, high-tension electricity is carried out step-down; Thereby be met the line voltage of normal electricity consumption, i.e. 220V.
In this kind high voltage substation, the appendiron core transformer that the transformer that is adopted normally is made up of silicon steel sheet and coil, and be generally 3-phase autotransformer.In this kind appendiron core transformer, in order to reduce the vortex flow that alternating magnetic field produces in iron core, the structure of iron core is generally piled up by silicon steel sheet and is formed, and so, vortex flow is limited in each silicon steel sheet thin layer, can reduce the vortex flow loss greatly.Yet, adopt this kind to pile up the iron core that forms by silicon steel sheet, its defective is that in electromagnetism alternation process, silicon steel sheet produces magnetomechanical effects continuously according to the frequency of alternating current, makes continuous shaking collision between each silicon steel sheet, thereby sends huge noise.
To this, at present main the employing improved coating for silicon steel sheet and in transformer case, added measure such as noise reduction cotton and reduce noise, yet however, near transformer, can obviously hear this kind noise, near resident's life seriously disturbing.
Wherein, because coating for silicon steel sheet receives materials limitations, damping effect is limited; And cotton for noise reduction, high frequency noise is had effect effect preferably, and for basic frequency and the identical low-frequency vibration of ac frequency (50 hertz), then effect is very limited, so present transformer noise problem does not obtain essence and effectively solves.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of low noise level transformer housing, this shell can reduce the operating noise of power transformer effectively.
The technical solution adopted for the present invention to solve the technical problems is: this low noise level transformer housing comprises inner casing and shell; Be provided with the resolver stator that constitutes by iron core and coil in the said inner casing; The surperficial central authorities of each of said inner casing are provided with the cluster pore, and the outer surface of said inner casing and the inner surface of said shell are provided with the noise reduction cotton.
As preferably, be provided with the elastic plate that is fixedly connected with said shell or inner casing outside inboard, the said inner casing of said shell, also be provided with the noise reduction cotton on the said elastic plate; The setting of said elastic plate can be converted into the vibrational energy of elastic plate with the air vibration that big part comprises noise, and finally is converted into interior ability, thereby further reduces noise.
As preferably, said pore aperture of each surface central authorities of said inner casing is 0.5mm-1.5mm, and the pore in this aperture can change into the high frequency noise that is suitable for the cotton noise reduction of noise reduction with low frequency noise effectively.
As preferably, the outside of said shell is provided with parallel fin, to improve the heat dispersion of transformer.
Beneficial effect of the present invention is: during transformer work; When the low-frequency vibration noise (being essentially air vibration) that is produced by resolver stator arrived at the inner casing of this transformer housing, the overwhelming majority passed from the pores on said inner casing surface, in this process; Air vibration is squeezed; Vibration frequency obtains huge raising, thereby makes low frequency noise change into high frequency noise, thereby by the cotton institute of the noise reduction of said inner casing outer surface and said inner surface of outer cover efficient absorption; So greatly reduce transformer noise, improved surrounding environment.
Description of drawings
Fig. 1 is the structural representation of an embodiment of a kind of low noise level transformer housing of the present invention;
Fig. 2 is the side view of Fig. 1.
Among the figure: 1, inner casing; 10, bunch pore; 2, elastic plate; 21, elastic plate; 3, resolver stator.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified:
In Fig. 1, embodiment shown in Figure 2, this low noise level transformer housing comprises inner casing 1 and shell 2; Be provided with the resolver stator 3 that constitutes by iron core and coil in the said inner casing 1; The surperficial central authorities of each of said inner casing 1 are provided with cluster pore 10, and the inner surface of the outer surface of said inner casing 1 and said shell 2 is provided with the noise reduction cotton; Said shell 2 inboards, said inner casing 1 outside are provided with the elastic plate 21 that is fixedly connected with said shell 2 or inner casing 1, and in the present embodiment, said elastic plate 21 is curved, and from said shell 2 arches to inner casing 1; Also be provided with the noise reduction cotton on the said elastic plate 21.
Central said pore 10 apertures, said inner casing 1 each surface are 0.5mm-1.5mm; In addition, the outside of said shell 2 is provided with parallel fin (not shown), to improve the heat dispersion of transformer.
When transformer is worked; When the low-frequency vibration noise (being essentially air vibration) that is produced by resolver stator 3 arrived at the inner casing 1 of this low noise level transformer housing, the overwhelming majority passed from the pores 10 on said inner casing 1 surface, in this process; Air vibration is squeezed; Vibration frequency obtains huge raising, thereby makes low frequency noise change into high frequency noise, thereby by the cotton institute of the noise reduction of said inner casing 1 outer surface and said shell 2 inner surfaces efficient absorption; In addition, owing to be provided with said elastic plate 21 in the present embodiment, it can be converted into the vibrational energy of elastic plate 21 with the air vibration that big part comprises noise, and finally is converted into interior ability, thereby further reduces noise; To sum up, this low noise level transformer housing can reduce transformer noise greatly, improves surrounding environment.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a low noise level transformer housing is characterized in that: comprise inner casing (1) and shell (2); Be provided with the resolver stator (3) that constitutes by iron core and coil in the said inner casing (1); Each surperficial central authorities of said inner casing (1) are provided with cluster pore (10), and the inner surface of the outer surface of said inner casing (1) and said shell (2) is provided with the noise reduction cotton.
2. low noise level transformer housing according to claim 1; It is characterized in that: said shell (2) is inboard, said inner casing (1) outside is provided with the elastic plate (21) that is fixedly connected with said shell (2) or inner casing (1), and said elastic plate also is provided with the noise reduction cotton on (21).
3. low noise level transformer housing according to claim 1 is characterized in that: said pore (10) aperture of each surface central authorities of said inner casing (1) is 0.5mm-1.5mm.
4. according to any described low noise level transformer housing in the claim 1 to 3, it is characterized in that: the outside of said shell (2) is provided with parallel fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100006687A CN102709025A (en) | 2012-01-04 | 2012-01-04 | Low-noise transformer shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100006687A CN102709025A (en) | 2012-01-04 | 2012-01-04 | Low-noise transformer shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102709025A true CN102709025A (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100006687A Pending CN102709025A (en) | 2012-01-04 | 2012-01-04 | Low-noise transformer shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102709025A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428026A (en) * | 2016-01-15 | 2016-03-23 | 张乔木 | Oil-immersible power transformer |
| CN107622863A (en) * | 2016-07-13 | 2018-01-23 | 湖北蕊源电子股份有限公司 | A kind of low noise inductor |
| CN107961472A (en) * | 2016-10-20 | 2018-04-27 | 西门子瑞士有限公司 | With frequency selectivity noise reduction layer, noise reduction fighting nozzle component and its application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09213541A (en) * | 1996-02-05 | 1997-08-15 | Mitsubishi Electric Corp | Soundproof device and transformer using it |
| 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 |
| CN202473491U (en) * | 2012-01-04 | 2012-10-03 | 吴江市东泰电力特种开关有限公司 | Low-noise transformer shell |
-
2012
- 2012-01-04 CN CN2012100006687A patent/CN102709025A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09213541A (en) * | 1996-02-05 | 1997-08-15 | Mitsubishi Electric Corp | Soundproof device and transformer using it |
| 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 |
| CN202473491U (en) * | 2012-01-04 | 2012-10-03 | 吴江市东泰电力特种开关有限公司 | Low-noise transformer shell |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428026A (en) * | 2016-01-15 | 2016-03-23 | 张乔木 | Oil-immersible power transformer |
| CN106971817A (en) * | 2016-01-15 | 2017-07-21 | 杨佳雯 | A kind of power transformer |
| CN105428026B (en) * | 2016-01-15 | 2017-08-25 | 南京博路电气有限公司 | A kind of oil-immersed power transformer |
| CN107622863A (en) * | 2016-07-13 | 2018-01-23 | 湖北蕊源电子股份有限公司 | A kind of low noise inductor |
| CN107961472A (en) * | 2016-10-20 | 2018-04-27 | 西门子瑞士有限公司 | With frequency selectivity noise reduction layer, noise reduction fighting nozzle component and its application |
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Application publication date: 20121003 |