CN204516563U - A kind of transformer body magnetic shielding device - Google Patents
A kind of transformer body magnetic shielding device Download PDFInfo
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- CN204516563U CN204516563U CN201520250386.1U CN201520250386U CN204516563U CN 204516563 U CN204516563 U CN 204516563U CN 201520250386 U CN201520250386 U CN 201520250386U CN 204516563 U CN204516563 U CN 204516563U
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- steel sheet
- silicon steel
- low magnetic
- shielding device
- magnetic
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Abstract
The utility model belongs to transformer manufacture technology, in particular to a kind of transformer body magnetic shielding device, it is characterized in that: comprise silicon steel sheet, low magnetic steel sheet and shading ring, described silicon steel sheet is quadrant ring type structure, silicon steel sheet upper surface is welded with the bar shaped low magnetic steel sheet of several gap arrangement, and wherein two low magnetic steel sheets are combined as T-type structure; The inner ring side of described silicon steel sheet, outer shroud side and right edge are around being fixed with shading ring.The beneficial effects of the utility model are, the silicon steel sheet of magnetic shielding device is annulus strip, and magnetic line of force direction, parallel coil end, effectively attracts magnetic flux, reduce the wastage; Secondly, epoxy resin-impregnated solidify to form epoxy resin layer, raises the efficiency, and reduces production cost; In addition, the low magnetic steel sheet of welding improves overall mechanical strength, and bar shaped low magnetic steel sheet leaves gap on silicon steel sheet surface, and when magnetic screen is imbedded in pressure, supporting plate, heat-sinking capability strengthens, safe and reliable.
Description
Technical field
The utility model belongs to transformer manufacture technology, particularly a kind of transformer body magnetic shielding device.
Background technology
Along with energy-saving and cost-reducing needs and transformer individual capacity constantly increase, large-scale power transformer needs to arrange that leakage flux is dredged in magnetic screen with it at device, reduces the wastage and structural member temperature rise of hot spot.It is best that empirical discovery magnetic screen is arranged in effect in pressing plate between coil to folder limb plate, supporting plate, Normal practice is the groove that milling is fan-shaped in the pressing plate, supporting plate of laminated paper board material, magnetic screen is imbedded wherein, this way shortcoming has two: one to be magnetic screen to be bar shaped silicon steel sheet to be coated with, and epoxy glue is bonding to be formed, and the mechanical strength of silicon steel sheet own is very poor, imbed in the pressure after groove milling, supporting plate, cause the mechanical strength of whole pressure, supporting plate to be deteriorated, the anti-short circuit capability of transformer declines; Two is that magnetic screen is imbedded in pressure, supporting plate, and its heat-sinking capability is poor, local overheating easily occurs and produces pollution transformer oil, cause decreasing insulating, and fault not easily Timeliness coverage and inspection.
Summary of the invention
The utility model, in order to solve above asking a question, makes up the deficiency of conventional art, provides a kind of transformer body magnetic shielding device.
The utility model is achieved by the following technical solution:
A kind of transformer body magnetic shielding device, it is characterized in that: comprise silicon steel sheet, low magnetic steel sheet and shading ring, described silicon steel sheet is quadrant ring type structure, and silicon steel sheet upper surface is welded with the bar shaped low magnetic steel sheet of several gap arrangement, and wherein two low magnetic steel sheets are combined as T-type structure; The inner ring side of described silicon steel sheet, outer shroud side and right edge are around being fixed with shading ring.
Described low magnetic steel sheet is also provided with grounding screw.
Described magnetic shielding device mass-impregnation epoxy resin cure forms epoxy resin layer, antirust against shock.
The beneficial effects of the utility model are, the silicon steel sheet of magnetic shielding device is annulus strip, and magnetic line of force direction, parallel coil end, effectively attracts magnetic flux, reduce the wastage; Secondly, epoxy resin-impregnated solidify to form epoxy resin layer, antirust against shock, replaces traditional epoxy glue application bonding, raises the efficiency, and reduces production cost; In addition, the low magnetic steel sheet of welding improves overall mechanical strength, and bar shaped low magnetic steel sheet leaves gap on silicon steel sheet surface, and when magnetic screen is imbedded in pressure, supporting plate, heat-sinking capability strengthens, safe and reliable.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that schematic diagram is looked on Fig. 1 structure left side of the present utility model;
Fig. 3 is A place sectional view in the utility model Fig. 1.
In figure, 1 low magnetic steel sheet, 2 silicon steel sheets, 3 shading rings, 4 grounding screws.
Embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.
Transformer body magnetic shielding device of the present utility model, it is characterized in that: comprise silicon steel sheet 2, low magnetic steel sheet 1 and shading ring 3, described silicon steel sheet 2 is in quadrant ring type structure, silicon steel sheet 2 upper surface is welded with the bar shaped low magnetic steel sheet 1 of several gap arrangement, and wherein two low magnetic steel sheets 1 are combined as T-type structure; The inner ring side of described silicon steel sheet 2, outer shroud side and right edge are around being fixed with shading ring 3.
Described low magnetic steel sheet 1 is also provided with grounding screw 4.
Described magnetic shielding device mass-impregnation epoxy resin cure forms epoxy resin layer, antirust against shock.
During use, transformer body bottom has two-layer supporting plate top to have a laminated sheet and one deck to assist pressing plate, when carrying out transformer suit, the magnetic shielding of transformer body of well in advance is placed on the centre position of the two-layer supporting plate in bottom and the centre position of top hold-down and auxiliary pressing plate.
Claims (3)
1. a transformer body magnetic shielding device, it is characterized in that: comprise silicon steel sheet (2), low magnetic steel sheet (1) and shading ring (3), described silicon steel sheet (2) is in quadrant ring type structure, silicon steel sheet (2) upper surface is welded with the bar shaped low magnetic steel sheet (1) of several gap arrangement, and wherein two low magnetic steel sheets (1) are combined as T-type structure; The inner ring side of described silicon steel sheet (2), outer shroud side and right edge are around being fixed with shading ring (3).
2. transformer body magnetic shielding device according to claim 1, is characterized in that: low magnetic steel sheet (1) is also provided with grounding screw (4).
3. transformer body magnetic shielding device according to claim 1 and 2, is characterized in that: magnetic shielding device mass-impregnation epoxy resin cure forms epoxy resin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520250386.1U CN204516563U (en) | 2015-04-23 | 2015-04-23 | A kind of transformer body magnetic shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520250386.1U CN204516563U (en) | 2015-04-23 | 2015-04-23 | A kind of transformer body magnetic shielding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204516563U true CN204516563U (en) | 2015-07-29 |
Family
ID=53714511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520250386.1U Active CN204516563U (en) | 2015-04-23 | 2015-04-23 | A kind of transformer body magnetic shielding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204516563U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428044A (en) * | 2015-12-28 | 2016-03-23 | 保定天威保变电气股份有限公司 | Lung-shaped shield stacking technology for transformer |
| CN114200102A (en) * | 2020-08-28 | 2022-03-18 | 宝山钢铁股份有限公司 | Measuring device and method for determining physical parameters related to electromagnetic properties of strip steel |
-
2015
- 2015-04-23 CN CN201520250386.1U patent/CN204516563U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428044A (en) * | 2015-12-28 | 2016-03-23 | 保定天威保变电气股份有限公司 | Lung-shaped shield stacking technology for transformer |
| CN105428044B (en) * | 2015-12-28 | 2017-04-05 | 保定天威保变电气股份有限公司 | A kind of transformator lobe of the lung shields stacking technique |
| CN114200102A (en) * | 2020-08-28 | 2022-03-18 | 宝山钢铁股份有限公司 | Measuring device and method for determining physical parameters related to electromagnetic properties of strip steel |
| CN114200102B (en) * | 2020-08-28 | 2023-11-14 | 宝山钢铁股份有限公司 | Measuring device and method for determining physical parameters related to electromagnetic properties of strip steel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200806 Granted publication date: 20150729 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200821 Granted publication date: 20150729 |