CN218447512U - Magnetic shielding structure for transformer - Google Patents
Magnetic shielding structure for transformer Download PDFInfo
- Publication number
- CN218447512U CN218447512U CN202221200175.3U CN202221200175U CN218447512U CN 218447512 U CN218447512 U CN 218447512U CN 202221200175 U CN202221200175 U CN 202221200175U CN 218447512 U CN218447512 U CN 218447512U
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- oil tank
- tank wall
- shielding strip
- voltage coil
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Abstract
The utility model belongs to the technical field of the transformer, specifically disclose a magnetic shielding structure for transformer, including the oil tank wall, the inside of oil tank wall is provided with magnetic shielding assembly, the magnetic shielding strip comprises a plurality of silicon steel sheets, a plurality of silicon steel sheets are piled up each other, and two HH epoxy resin paints have been sprayed between silicon steel sheet and the silicon steel sheet, and the both ends of magnetic shielding strip are the shape of bending, one side of magnetic shielding strip all laminates with the oil tank wall, the angle that the magnetic shielding strip both ends were bent is 30 to 45 degrees, and the oil tank wall is close to top and bottom position department symmetry and is provided with the mounting, mounting and magnetic shielding strip joint, and the position that is located the magnetic shielding strip bottom in the oil tank wall is provided with the grounding piece; the distribution of leakage magnetic field is influenced by the angle of bending the magnetic shield up and down, so that the distribution of leakage magnetic flux at the end part of the winding can be effectively improved, the radial component of the leakage magnetic flux is greatly reduced, and the eddy current loss of the radial leakage magnetic flux of the winding and the local temperature rise of certain wire cakes are reduced.
Description
Technical Field
The utility model relates to a transformer technical field specifically is a magnetic screen structure for transformer.
Background
With the continuous development of transformer technology, the performance requirements of each user on the transformer product are higher and higher, and each transformer manufacturer also makes various technical efforts to achieve the purpose of improving the performance of the transformer under the cost pressure; to large capacity transformer product, the additional loss that reduces the transformer needs to set up the magnetism shielding at transformer tank inner wall, and the magnetism shielding is with the silicon steel sheet as the main material, and experiments show that setting up the magnetism shielding at transformer tank inner wall can show and reduce total additional loss, and current magnetism shielding structure effect is unsatisfactory, and inside the can intensifies of transformer tank.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a magnetic screen structure for transformer is unsatisfactory in order to solve current magnetic screen structure effect, and the inside problem that can heat up of transformer tank.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a magnetic screen structure for transformer which characterized in that: including the oil tank wall, the inside of oil tank wall is provided with the magnetic screen subassembly, and the magnetic screen subassembly includes magnetic screen strip, insulated paper board, mounting, grounding plate, the magnetic screen strip comprises a plurality of silicon steel sheets, and a plurality of silicon steel sheets pile up each other, and the spraying has two HH epoxy paint between silicon steel sheet and the silicon steel sheet, and the both ends of magnetic screen strip are the form of bending, one side of magnetic screen strip all with the laminating of oil tank wall, the angle that magnetic screen strip both ends were bent is 30 to 45 degrees, and the oil tank wall is close to top and bottom position department symmetry and is provided with the mounting, mounting and magnetic screen strip joint, and the position that is located magnetic screen strip bottom in the oil tank wall is provided with the grounding plate.
Preferably, the outer side of the magnetic shielding strip is provided with an insulating paperboard, and the insulating paperboard is sleeved with the magnetic shielding strip.
Preferably, an iron core is disposed inside the tank wall.
Preferably, one side of iron core is provided with low-voltage coil, and low-voltage coil's inside is provided with a plurality of second magnetic leakage, and low-voltage coil's inside is hollow structure, and low-voltage coil overlaps in a plurality of second magnetic leakage outsides.
Preferably, one side of low-voltage coil is provided with high-voltage coil, and high-voltage coil's inside is provided with a plurality of first magnetic leakage, and high-voltage coil's inside is hollow structure, and high-voltage coil overlaps in a plurality of first magnetic leakage outsides.
Preferably, the fixing pieces are welded to the wall of the fuel tank.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a magnetic shielding structure for a transformer, which effectively solves the problems that the existing magnetic shielding structure has unsatisfactory effect and the temperature inside a transformer oil tank can rise; the utility model mainly aims to utilize the angle of the magnetic shield which is bent up and down to influence the distribution of the leakage magnetic field, thus effectively improving the distribution of the leakage magnetic flux at the end part of the winding, greatly reducing the radial component of the leakage magnetic flux, reducing the eddy current loss of the radial leakage magnetic flux of the winding and the local temperature rise of some wire cakes; can more do benefit to the magnetic leakage flux like this and get into the magnetic screen, provide a better magnetic path for the magnetic leakage flux, play magnetic leakage shielding effect to iron core, folder and oil tank wall, it is more showing to the reduction effect of additional loss.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1. a magnetic shielding strip; 2. an insulating paperboard; 3. a fixing member; 4. a ground plate; 5. a fuel tank wall; 6. a first leakage flux; 7. a low-voltage coil; 8. a high-voltage coil; 9. an iron core; 10. and a second leakage flux.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a magnetic screen structure for transformer which characterized in that: including oil tank wall 5, the inside of oil tank wall 5 is provided with the magnetism shielding subassembly, and the magnetism shielding subassembly includes magnetism shielding strip 1, insulating paperboard 2, mounting 3, grounding piece 4, magnetism shielding strip 1 comprises a plurality of silicon steel sheets, and a plurality of silicon steel sheets pile up each other, and the spraying has two HH epoxy paint between silicon steel sheet and the silicon steel sheet, and the both ends of magnetism shielding strip 1 are the form of bending, and one side of magnetism shielding strip 1 all laminates with oil tank wall 5, and the angle that magnetism shielding strip 1 both ends were bent is 30 to 45 degrees, and oil tank wall 5 is close to top and bottom position department symmetry and is provided with mounting 3, mounting 3 and magnetism shielding strip 1 joint, and the position that lies in magnetism shielding strip 1 bottom in oil tank wall 5 is provided with grounding piece 4.
Further, the outside of magnetic shielding strip 1 is provided with insulating paper board 2, and insulating paper board 2 is cup jointed with magnetic shielding strip 1.
Further, an iron core 9 is arranged inside the oil tank wall 5.
Further, one side of iron core 9 is provided with low-voltage coil 7, and low-voltage coil 7's inside is provided with a plurality of second magnetic leakage 10, and low-voltage coil 7's inside is hollow structure, and low-voltage coil 7 covers in a plurality of second magnetic leakage 10 outsides.
Further, one side of low-voltage coil 7 is provided with high-voltage coil 8, and high-voltage coil 8's inside is provided with a plurality of first magnetic leakage 6, and high-voltage coil 8's inside is hollow structure, and high-voltage coil 8 covers in a plurality of first magnetic leakage 6 outsides.
Further, the fixing pieces 3 are welded to the tank wall 5.
The working principle is as follows: the outside 2 parcels of insulated paper board for the magnetic shielding strip 1, utilize on the oil tank wall 5 welding fixed spare to fix on the oil tank inner wall, the 1 lower extreme of magnetic shielding strip utilizes earthing lug 4 and the good ground connection of oil tank wall, the angle of bending about 1 through the magnetic shielding strip influences the distribution of magnetic leakage field, can effectively improve winding tip magnetic leakage flux distribution like this, the radial component of the magnetic leakage flux that significantly reduces, the eddy current loss of the radial magnetic leakage of reduction winding and the local temperature rise of some line cake.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a magnetic screen structure for transformer which characterized in that: including oil tank wall (5), the inside of oil tank wall (5) is provided with the magnetism shielding subassembly, and the magnetism shielding subassembly includes magnetism shielding strip (1), insulated paper board (2), mounting (3), grounding plate (4), magnetism shielding strip (1) comprises a plurality of silicon steel sheets, and a plurality of silicon steel sheets pile up each other, and the spraying has two HH epoxy paint between silicon steel sheet and the silicon steel sheet, and the both ends of magnetism shielding strip (1) are the form of bending, and one side of magnetism shielding strip (1) all laminates with oil tank wall (5), and the angle that magnetism shielding strip (1) both ends were bent is 30 to 45 degrees, and oil tank wall (5) are close to top and bottom position department symmetry and are provided with mounting (3), mounting (3) and magnetism shielding strip (1) joint, and the position that is located magnetism shielding strip (1) bottom in oil tank wall (5) is provided with grounding plate (4).
2. A magnetic shield structure for a transformer according to claim 1, characterized in that: the outer side of the magnetic shielding strip (1) is provided with an insulating paperboard (2), and the insulating paperboard (2) is sleeved with the magnetic shielding strip (1).
3. A magnetic shield structure for a transformer according to claim 1, characterized in that: an iron core (9) is arranged inside the oil tank wall (5).
4. A magnetic shield structure for a transformer according to claim 3, characterized in that: one side of iron core (9) is provided with low-voltage coil (7), and the inside of low-voltage coil (7) is provided with a plurality of second magnetic leakage (10), and the inside of low-voltage coil (7) is hollow structure, and low-voltage coil (7) cover is in a plurality of second magnetic leakage (10) outsides.
5. The magnetic shield structure for a transformer according to claim 4, characterized in that: one side of low pressure coil (7) is provided with high-voltage coil (8), and the inside of high-voltage coil (8) is provided with a plurality of first magnetic leakage (6), and the inside of high-voltage coil (8) is hollow structure, and high-voltage coil (8) cover is in a plurality of first magnetic leakage (6) outsides.
6. A magnetic shield structure for a transformer according to claim 1, characterized in that: the fixing pieces (3) are welded with the oil tank wall (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221200175.3U CN218447512U (en) | 2022-05-19 | 2022-05-19 | Magnetic shielding structure for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221200175.3U CN218447512U (en) | 2022-05-19 | 2022-05-19 | Magnetic shielding structure for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218447512U true CN218447512U (en) | 2023-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221200175.3U Active CN218447512U (en) | 2022-05-19 | 2022-05-19 | Magnetic shielding structure for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218447512U (en) |
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2022
- 2022-05-19 CN CN202221200175.3U patent/CN218447512U/en active Active
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