CN203746634U - Vertical magnetic shielding structure - Google Patents
Vertical magnetic shielding structure Download PDFInfo
- Publication number
- CN203746634U CN203746634U CN201420076834.6U CN201420076834U CN203746634U CN 203746634 U CN203746634 U CN 203746634U CN 201420076834 U CN201420076834 U CN 201420076834U CN 203746634 U CN203746634 U CN 203746634U
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- CN
- China
- Prior art keywords
- electrical steel
- magnetic shielding
- steel strip
- vertical magnetic
- shielding structure
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- 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.)
- Expired - Fee Related
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- Regulation Of General Use Transformers (AREA)
Abstract
The utility model discloses a vertical magnetic shielding structure, and belongs to the technical field of power transformers. A vertical structure is adopted in the vertical magnetic shielding structure, electrical steel belts are cut into narrow strips and then are overlapped, the periphery of the vertical magnetic shielding structure is fixed through a chamfered steel ring, a certain number of bending fixing plates are arranged in the length direction, and the fixing plates are welded with the electrical steel belts to form a whole and are finally fixed with an oil tank in a welding mode. The vertical magnetic shielding structure has low eddy-current loss, is reliable in grounding and firm in fixation, has good electrode shapes, is simple in structure and convenient to manufacture, can shorten machining cycles of transformer products, and can avoid damp problem of magnetic shielding insulation.
Description
Technical field
The utility model relates to transformer and uses magnet shielding structure field, is specially a kind of vertical magnetic shielding construction.
Background technology
The supplementary load loss of high-power transformer oil tank wall are sizable, in order to reduce this part loss, and avoid the local overheating of oil tank wall, and at inner wall of oil tank, magnetic screen being set is comparatively effective way.Traditional press-fit board-like fuel tank magnetic screen, its leakage flux enters perpendicular to the Width of electrical steel strip, and the eddy current loss in magnetic screen is larger.
Utility model content
The purpose of this utility model is to provide a kind of vertical magnetic shielding construction, to solve the large problem of prior art fuel tank magnetic screen eddy current loss.
In order to achieve the above object, the technical scheme that the utility model adopts is:
A kind of vertical magnetic shielding construction, it is characterized in that: comprise the electrical steel strip group being formed by the electrical steel strip of multiple parallel closed assemblies, described electrical steel strip group surrounding is fixed and for there being steel ring, also include multiple bending fixed heads, multiple bending fixed heads are welded on electrical steel strip group bottom along electrical steel strip length direction respectively.
Described a kind of vertical magnetic shielding construction, is characterized in that: the electrical steel strip after closed assembly forms electrical steel strip group surface-coated epoxy resin coating.
Described a kind of vertical magnetic shielding construction, is characterized in that: described steel ring corner rounding.
Described a kind of vertical magnetic shielding construction, is characterized in that: described bending fixed head and electrical steel strip weld seam are not closed.
The utility model welds vertical fuel tank magnetic screen and press-fits compared with board-like fuel tank magnetic screen with traditional, and the Width that makes magnetic flux be parallel to electrical steel strip enters, and eddy current loss in magnetic screen is little and to compare former structure simple.Welding with fuel tank is an entirety, has guaranteed magnetic screen reliable ground, and surfacing, attractive in appearance, has good electrode shape.It has simplified assembly process, has improved production efficiency, has higher operational reliability.
Brief description of the drawings
Fig. 1 is the utility model structure upward view.
Fig. 2 is the utility model structure front view.
Embodiment
As shown in Figure 1 and Figure 2.A kind of vertical magnetic shielding construction, comprise the electrical steel strip group being formed by the electrical steel strip 1 of multiple parallel closed assemblies, electrical steel strip group surrounding is fixed and for there being steel ring 2, is also included multiple bending fixed heads 3, and multiple bending fixed heads 3 are welded on electrical steel strip group bottom along electrical steel strip 1 length direction respectively.
Electrical steel strip 1 after closed assembly forms electrical steel strip group surface-coated epoxy resin coating.
Steel ring 2 corner's roundings.
Bending fixed head 3 is not closed with electrical steel strip 1 weld seam.
After the first fillet that electrical steel strip 1 is processed into given size of the utility model, carry out again stack, its surrounding is fixing with the steel ring 2 of rounding, be provided with along its length the bending fixed head 3 of some, this bending fixed head and electrical steel strip are integrally welded, and final and fuel tank is welded and fixed.Silicon steel sheet after closed assembly moulding surface is coated with epoxy resin coating, paints thickly evenly to guarantee wrinkle resistantly, does not come off.
The magnetic screen of the utility model fuel tank adopts electrical steel strip to make, there is higher magnetic permeability, make the leakage flux that originally enters fuel tank enter into magnetic screen, thereby greatly reduce the leakage flux entering in oil tank wall, effectively reduce the eddy current loss in structural member, there is very important practical significance.
Claims (4)
1. a vertical magnetic shielding construction, it is characterized in that: comprise the electrical steel strip group being formed by the electrical steel strip of multiple parallel closed assemblies, described electrical steel strip group surrounding is fixed and for there being steel ring, also include multiple bending fixed heads, multiple bending fixed heads are welded on electrical steel strip group bottom along electrical steel strip length direction respectively.
2. a kind of vertical magnetic shielding construction according to claim 1, is characterized in that: the electrical steel strip after closed assembly forms electrical steel strip group surface-coated epoxy resin coating.
3. a kind of vertical magnetic shielding construction according to claim 1, is characterized in that: described steel ring corner rounding.
4. a kind of vertical magnetic shielding construction according to claim 1, is characterized in that: described bending fixed head and electrical steel strip weld seam are not closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420076834.6U CN203746634U (en) | 2014-02-21 | 2014-02-21 | Vertical magnetic shielding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420076834.6U CN203746634U (en) | 2014-02-21 | 2014-02-21 | Vertical magnetic shielding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203746634U true CN203746634U (en) | 2014-07-30 |
Family
ID=51346403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420076834.6U Expired - Fee Related CN203746634U (en) | 2014-02-21 | 2014-02-21 | Vertical magnetic shielding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203746634U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373762A (en) * | 2016-10-26 | 2017-02-01 | 山东电力设备有限公司 | Transformer capable of controlling magnetic flux leakage |
| CN106583887A (en) * | 2016-12-15 | 2017-04-26 | 保定天威电气设备结构有限公司 | Magnetic shielding welding cracking prevention method for power transformer oil tank |
| CN107146685A (en) * | 2017-06-27 | 2017-09-08 | 正泰电气股份有限公司 | A kind of fixing means of transformer oil tank magnetic shield |
| CN107742571A (en) * | 2017-11-22 | 2018-02-27 | 中国西电电气股份有限公司 | A kind of vertical lamination overlength magnet shielding structure and its manufacturing process |
| CN107738063A (en) * | 2017-11-30 | 2018-02-27 | 保定天威保变电气股份有限公司 | A kind of welding method and frock of the shielding of vertical structure fuel tank |
| CN108406046A (en) * | 2018-05-04 | 2018-08-17 | 山东国舜建设集团有限公司 | A kind of auxiliary welding equipment and welding method for high-intensity magnetic field |
-
2014
- 2014-02-21 CN CN201420076834.6U patent/CN203746634U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373762A (en) * | 2016-10-26 | 2017-02-01 | 山东电力设备有限公司 | Transformer capable of controlling magnetic flux leakage |
| CN106583887A (en) * | 2016-12-15 | 2017-04-26 | 保定天威电气设备结构有限公司 | Magnetic shielding welding cracking prevention method for power transformer oil tank |
| CN107146685A (en) * | 2017-06-27 | 2017-09-08 | 正泰电气股份有限公司 | A kind of fixing means of transformer oil tank magnetic shield |
| CN107742571A (en) * | 2017-11-22 | 2018-02-27 | 中国西电电气股份有限公司 | A kind of vertical lamination overlength magnet shielding structure and its manufacturing process |
| CN107738063A (en) * | 2017-11-30 | 2018-02-27 | 保定天威保变电气股份有限公司 | A kind of welding method and frock of the shielding of vertical structure fuel tank |
| CN108406046A (en) * | 2018-05-04 | 2018-08-17 | 山东国舜建设集团有限公司 | A kind of auxiliary welding equipment and welding method for high-intensity magnetic field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140730 Termination date: 20180221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |