CN216212800U - Insulation structure of dry type transformer winding - Google Patents
Insulation structure of dry type transformer winding Download PDFInfo
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- CN216212800U CN216212800U CN202122605073.1U CN202122605073U CN216212800U CN 216212800 U CN216212800 U CN 216212800U CN 202122605073 U CN202122605073 U CN 202122605073U CN 216212800 U CN216212800 U CN 216212800U
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- voltage winding
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- insulation
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- 238000004804 winding Methods 0.000 title claims abstract description 57
- 238000009413 insulation Methods 0.000 title claims abstract description 40
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 12
- 238000010125 resin casting Methods 0.000 claims abstract description 12
- 239000003822 epoxy resin Substances 0.000 claims abstract description 11
- 239000003365 glass fiber Substances 0.000 claims abstract description 11
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 11
- 238000005266 casting Methods 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 238000010292 electrical insulation Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000005340 laminated glass Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
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Abstract
An insulation structure of a dry-type transformer winding comprises a high-voltage winding and a low-voltage winding, wherein a resin pouring insulation cylinder is arranged between the high-voltage winding and the low-voltage winding and comprises an epoxy resin layer and a glass fiber layer, and the resin pouring insulation cylinder is arranged on the outer periphery of the low-voltage winding and on the inner periphery of the high-voltage winding; the resin casting insulation cylinder is formed by mixing and casting epoxy resin and glass fiber in a vacuum environment. The resin insulation cylinder is formed by mixing and pouring epoxy resin and glass fiber in a vacuum environment, has excellent electrical insulation performance, can reduce the using amount of the insulation cylinder, effectively reduces the insulation distance between a high-voltage winding and a low-voltage winding, reduces the volume of a product, simplifies product assembly, shortens the assembly time of the product, and meets the insulation performance requirement of a transformer with higher voltage grade.
Description
Technical Field
The utility model relates to a dry-type transformer, in particular to an insulation structure of a dry-type transformer winding.
Background
When one winding of the general dry-type transformer has higher voltage, an insulating cylinder needs to be arranged between the high-voltage winding and the low-voltage winding, and the insulating cylinder can play the roles of electrical isolation and improvement of winding heat dissipation between the two windings. The existing insulating cylinder is mostly made of unsaturated polyester laminated glass cloth plates, the thickness of the insulating cylinder is generally 2-3 mm, and the electrical insulating property is relatively limited; when the voltage level of the transformer is higher, a large number of insulating cylinders need to be placed between the high-voltage winding and the low-voltage winding, and the insulating distance between the two windings needs to be increased, so that the assembly of a product is complex, and the volume of the product is large.
Therefore, further improvements are needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide the insulation structure of the dry type transformer winding, which has the advantages of simple structure, good insulation performance, small insulation distance, small volume, simple assembly and strong practicability, and overcomes the defects in the prior art.
The insulation structure of the dry type transformer winding designed according to the purpose comprises a high-voltage winding and a low-voltage winding, and is characterized in that: a resin pouring insulating cylinder is arranged between the high-voltage winding and the low-voltage winding and comprises an epoxy resin layer and a glass fiber layer, and the resin pouring insulating cylinder is arranged on the periphery of the low-voltage winding and on the inner periphery of the high-voltage winding.
The resin casting insulating cylinder is formed by mixing and casting epoxy resin and glass fiber in a vacuum environment.
The thickness of the resin casting insulating cylinder is S, and S is 5-10 mm.
The resin pouring insulating cylinder is provided with more than one resin pouring insulating cylinder.
And the low-voltage winding is wound on the iron core of the dry-type transformer.
The resin insulation cylinder is formed by mixing and pouring epoxy resin and glass fiber in a vacuum environment, has excellent electrical insulation performance, can reduce the using amount of the insulation cylinder, effectively reduces the insulation distance between a high-voltage winding and a low-voltage winding, reduces the volume of a product, simplifies product assembly, shortens the assembly time of the product, and meets the insulation performance requirement of a transformer with higher voltage grade.
Drawings
Fig. 1 is a schematic view showing an assembly structure of a high voltage winding, a low voltage winding and a resin-cast insulating cylinder according to an embodiment of the present invention.
Fig. 2 is a front view of a resin-cast insulation cylinder in an embodiment of the present invention.
Fig. 3 is a top view of a resin-cast insulation cylinder in an embodiment of the utility model.
Detailed Description
The utility model is further described with reference to the following figures and examples.
Referring to fig. 1-3, the insulation structure of the dry type transformer winding comprises a high-voltage winding 1 and a low-voltage winding 2, a resin casting insulation cylinder 3 is arranged between the high-voltage winding 1 and the low-voltage winding 2, the resin casting insulation cylinder 3 comprises an epoxy resin layer and a glass fiber layer, and the resin casting insulation cylinder 3 is arranged on the outer periphery of the low-voltage winding 2 and on the inner periphery of the high-voltage winding 1. When the dry type transformer is assembled, the high-voltage winding 1 and the resin casting insulation cylinder 3 are assembled together, and then the low-voltage winding 2 is placed in the resin casting insulation cylinder 3.
The resin casting insulation cylinder 3 is formed by mixing and casting epoxy resin and glass fiber in a vacuum environment, and the epoxy resin and the glass fiber have excellent electrical insulation performance, so that the using number of the insulation cylinder can be reduced, the insulation distance between the high-voltage winding 1 and the low-voltage winding 2 can be effectively reduced, and the product volume can be reduced.
The resin casting insulation cylinder 3 has a thickness S, and S is 5-10 mm.
More than one resin-cast insulation cylinder 3 is arranged, the number of the resin-cast insulation cylinders 3 is determined according to the voltage grade of the dry-type transformer, and when the voltage grade of the dry-type transformer is higher, a larger number of the resin-cast insulation cylinders 3 can be arranged.
The low-voltage winding 2 is wound on the iron core of the dry type transformer.
The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the utility model are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, and the utility model is intended to be protected by the following claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. An insulation structure of a dry type transformer winding, comprising a high voltage winding (1) and a low voltage winding (2), characterized in that: a resin pouring insulating cylinder (3) is arranged between the high-voltage winding (1) and the low-voltage winding (2), the resin pouring insulating cylinder (3) comprises an epoxy resin layer and a glass fiber layer, and the resin pouring insulating cylinder (3) is arranged on the periphery of the low-voltage winding (2) and on the inner periphery of the high-voltage winding (1).
2. An insulation structure of a winding of a dry type transformer according to claim 1, wherein: the resin casting insulating cylinder (3) is formed by mixing and casting epoxy resin and glass fiber in a vacuum environment.
3. An insulation structure of a winding of a dry type transformer according to claim 2, wherein: the thickness of the resin casting insulation cylinder (3) is S, and S is 5-10 mm.
4. An insulation structure of a winding of a dry type transformer according to claim 3, wherein: more than one resin pouring insulating cylinder (3) is arranged.
5. An insulation structure of a winding of a dry type transformer according to any one of claims 1 to 4, wherein: and the low-voltage winding (2) is wound on an iron core of the dry-type transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122605073.1U CN216212800U (en) | 2021-10-27 | 2021-10-27 | Insulation structure of dry type transformer winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122605073.1U CN216212800U (en) | 2021-10-27 | 2021-10-27 | Insulation structure of dry type transformer winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216212800U true CN216212800U (en) | 2022-04-05 |
Family
ID=80891878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122605073.1U Active CN216212800U (en) | 2021-10-27 | 2021-10-27 | Insulation structure of dry type transformer winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216212800U (en) |
-
2021
- 2021-10-27 CN CN202122605073.1U patent/CN216212800U/en active Active
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