CN214226722U - Interlayer insulation structure of high-voltage coil of dry-type transformer - Google Patents
Interlayer insulation structure of high-voltage coil of dry-type transformer Download PDFInfo
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- CN214226722U CN214226722U CN202120521782.9U CN202120521782U CN214226722U CN 214226722 U CN214226722 U CN 214226722U CN 202120521782 U CN202120521782 U CN 202120521782U CN 214226722 U CN214226722 U CN 214226722U
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Abstract
The utility model relates to a local component of transformer, in particular to dry-type transformer high-tension coil layer insulation system. The high-voltage coil interlayer insulation structure of the dry-type transformer comprises a high-voltage winding and a plurality of coil segment layers wound on the high-voltage winding, and is characterized in that: the coil section layer is provided with a plurality of coil layers, an interlayer insulating layer is arranged between every two adjacent coil layers, and the interlayer insulating layer is composed of an upper polyester non-woven fabric layer, a polyester film layer and a lower polyester non-woven fabric layer which are sequentially arranged from top to bottom. The utility model has the advantages that: the volume of the transformer is reduced, the using amount of casting resin is reduced, and the manufacturing cost of the transformer is saved; simple structure, convenient processing and meets the requirements of energy conservation and environmental protection.
Description
(I) technical field
The utility model relates to a local component of transformer, in particular to dry-type transformer high-tension coil layer insulation system.
(II) background of the invention
At present, the market of the transformer is gradually expanded, and under the condition that manufacturers are continuously increased, the production cost can be effectively reduced and the product competitiveness is improved only by continuously optimizing an insulation structure and reducing the occupied space of insulation. The traditional dry-type transformer is mainly made of glass fiber materials, the problems of large insulation thickness, high resin filling requirement and the like exist, the dust of the traditional dry-type transformer is extremely harmful to human bodies, the environmental pollution is caused, and the traditional dry-type transformer does not accord with the development trend of the modern environment-friendly society.
Disclosure of the invention
The utility model discloses a remedy prior art not enough, provide a simple structure, processing convenience, energy-concerving and environment-protective dry-type transformer high-voltage coil layer insulation system.
The utility model discloses a realize through following technical scheme:
the utility model provides an insulating structure between dry-type transformer high-voltage coil layer, includes high-voltage winding and a plurality of coil segment layers of coiling on high-voltage winding, characterized by: the coil section layer is provided with a plurality of coil layers, an interlayer insulating layer is arranged between every two adjacent coil layers, and the interlayer insulating layer is composed of an upper polyester non-woven fabric layer, a polyester film layer and a lower polyester non-woven fabric layer which are sequentially arranged from top to bottom.
The utility model has the advantages that: the volume of the transformer is reduced, the using amount of casting resin is reduced, and the manufacturing cost of the transformer is saved; simple structure, convenient processing and meets the requirements of energy conservation and environmental protection.
(IV) description of the drawings
The present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
in the figure, 1 high voltage winding, 2 coil segment layers, 3 coil layers, 4 interlayer insulating layers, 5 upper polyester non-woven fabric layers, 6 polyester film layers and 7 lower polyester non-woven fabric layers.
(V) detailed description of the preferred embodiments
The attached drawing is a concrete embodiment of the utility model. The high-voltage winding comprises a high-voltage winding 1 and a plurality of coil segment layers 2 wound on the high-voltage winding 1, wherein the coil segment layers 2 are provided with a plurality of coil layers 3, an interlayer insulating layer 4 is arranged between every two adjacent coil layers 3, and the interlayer insulating layer 4 is composed of an upper polyester non-woven fabric layer 5, a polyester film layer 6 and a lower polyester non-woven fabric layer 7 which are sequentially arranged from top to bottom.
Adopt the utility model discloses an insulating structure between dry-type transformer high-tension coil layer, insulating layer 4 between by last polyester non-woven fabrics layer 5 with down the polyester non-woven fabrics layer 7 in the middle of press from both sides the insulating polyester film layer of one deck 6 and synthetic three-layer insulation structure, have good mechanical strength, can reach 320N 50mm according to the insulation thickness difference. When the high-voltage winding 1 is wound, the insulating structure is adopted between the two coil layers 3 to replace the traditional glass fiber to be used as an insulating structure, so that the thickness of an insulating material is reduced, the volume of the transformer is reduced, and the manufacturing cost of the transformer is saved under the requirement of the same insulating strength. The insulation structure effectively reduces the radial size of the coil, reduces the occupancy rate of the insulation space, effectively saves the use of wire rods and silicon steel sheets, and reduces the volume of the transformer. Because the insulation structure does not absorb epoxy resin (insulation material for casting), the use of the epoxy resin is greatly reduced, and the use amount of the epoxy resin can be saved by about 20 percent each time; the overall cost saving rate is about 5%, and the insulating structure is more environment-friendly than glass fiber and meets the requirements of energy conservation and environmental protection.
Claims (1)
1. The utility model provides an insulation system between dry-type transformer high-voltage coil layer, includes high-voltage winding (1) and a plurality of coil segment layers (2) of coiling on high-voltage winding (1), characterized by: the coil segment layer (2) is provided with a plurality of coil layers (3), an interlayer insulating layer (4) is arranged between every two adjacent coil layers (3), and the interlayer insulating layer (4) is composed of an upper polyester non-woven fabric layer (5), a polyester film layer (6) and a lower polyester non-woven fabric layer (7) which are sequentially arranged from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120521782.9U CN214226722U (en) | 2021-03-12 | 2021-03-12 | Interlayer insulation structure of high-voltage coil of dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120521782.9U CN214226722U (en) | 2021-03-12 | 2021-03-12 | Interlayer insulation structure of high-voltage coil of dry-type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214226722U true CN214226722U (en) | 2021-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120521782.9U Active CN214226722U (en) | 2021-03-12 | 2021-03-12 | Interlayer insulation structure of high-voltage coil of dry-type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214226722U (en) |
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2021
- 2021-03-12 CN CN202120521782.9U patent/CN214226722U/en active Active
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