CN202258735U - Insulating structure of transformer coil - Google Patents
Insulating structure of transformer coil Download PDFInfo
- Publication number
- CN202258735U CN202258735U CN2011203987017U CN201120398701U CN202258735U CN 202258735 U CN202258735 U CN 202258735U CN 2011203987017 U CN2011203987017 U CN 2011203987017U CN 201120398701 U CN201120398701 U CN 201120398701U CN 202258735 U CN202258735 U CN 202258735U
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- paper layer
- adhesive paper
- transformer
- gummed paper
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Abstract
The utility model provides an insulating structure of a transformer coil, wherein the insulating structure comprises a first adhesive paper layer, a crepe paper layer and a second adhesive paper layer, wherein the crepe paper layer is arranged between the first adhesive paper layer and the second adhesive paper layer. The first adhesive paper layer and the second adhesive paper layer are all composed of thirteen layers of 0.08 mm thick dotted adhesive paper stacked, and the crepe paper layer is composed of two layers of 0.8 mm thick crepe paper. The two ends of the crepe paper layer are all stretched out of the first adhesive paper layer or the second adhesive paper layer. In comparison with the traditional insulating structure, the insulating structure disclosed by the utility model has advantages of more compact structure design and largely reduced thickness while ensuring the insulating strengths of the high and low voltage coils of a distribution transformer such that the loss of the transformer can be effectively lowered, and the manufacturing cost of the transformer can be reduced.
Description
Technical field
The utility model belongs to transformer manufacture technology, is specifically related to a kind of insulation system that is used between the distribution transformer high and low pressure coil.
Background technology
Insulation system between the distribution transformer high and low pressure coil is concerning the cost of distribution transformer.Traditional insulation system generally is to adopt corrugated board or stay to be bonded on the insulating board, forms the insulation system of presspaper small oil gap.For the corrugated paper oil duct,, when coiling, be crushed easily, and can't satisfy insulating requirements because mechanical strength is low; Be bonded at the structure on the insulating board for stay, insulating board vertically is arranged between the high and low pressure coil, vertically vertically is provided with some stays on the side of insulating board, and the cross section of insulating board and stay is a rectangle.Because creepage path is the end face of insulation, and the height of the insulating board of traditional structure and stay equates, in order to reach the requirement of creepage distance, stay is bigger perpendicular to the length of insulating board direction usually, thereby has increased overall dimensions, and cost is higher.So in order to satisfy the insulating requirements between high-voltage coil and low-voltage coil, the insulation system thickness of this presspaper small oil gap must be more than 7mm.This causes the high-tension coil internal diameter bigger than normal, and the copper conductor use amount increases, the meaningless increase of loss and cost.
Summary of the invention
The utility model provides a kind of compact more insulation system to the deficiency of above-mentioned prior art.
The utility model is realized through following technical scheme:
A kind of insulation system of transformer coil is characterized in that, this insulation system comprises the first gummed paper layer, wrinkle ply of paper and the second gummed paper layer, and said wrinkle ply of paper is between the first gummed paper layer and the second gummed paper layer.
Further, the first gummed paper layer and the second gummed paper layer are that the some gummed paper stack of 0.08mm forms by 13 layer thicknesses, and the wrinkle ply of paper is that the crimped paper stack of 0.8mm forms by 2 layer thicknesses.
Further, all stretch out outside the first gummed paper layer or the second gummed paper layer at the two ends of said wrinkle ply of paper.
The described insulation system of the utility model is under the prerequisite that guarantees distribution transformer high and low pressure coil insulation intensity; Compare with traditional insulation system, structural design is compact more, and thickness significantly reduces; Thereby can effectively reduce the loss of transformer, reduce the manufacturing cost of transformer.
Description of drawings
Fig. 1 is the described insulation system front view of the utility model;
Fig. 2 is the structure cutaway view of the transformer of the described insulation system of employing the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Like Fig. 1, shown in 2, the utility model provides a kind of insulation system of transformer coil, comprises the first gummed paper layer 1, wrinkle ply of paper 2 and the second gummed paper layer 3, and said wrinkle ply of paper 2 is between the first gummed paper layer 1 and the second gummed paper layer 3.This structural design is compact more, and can satisfy insulating requirements.
Preferably, the first gummed paper layer 1 is identical with the structure of the second gummed paper layer 3, is that the some gummed paper stack of 0.08mm forms by 13 layer thicknesses.Wrinkle ply of paper 2 is that the crimped paper stack of 0.8mm forms by 2 layer thicknesses.Thereby the whole insulation thickness of this insulation system is 3.7mm; Placing it between high pressure winding and the low pressure winding of 10kV transformer as main empty path insulation uses; Compare with the 7mm main empty path insulation of routine; It is under the prerequisite of the dielectric strength that guarantees distribution transformer high and low pressure coil, and thickness has reduced half the.
Preferably, all stretch out outside the first gummed paper layer 1 or the second gummed paper layer 3 at the two ends of wrinkle ply of paper 2, and two ends respectively grow about 40mm than gummed paper layer, can effectively increase the creepage distance of high and low pressure coil like this, better reaches its insulating requirements.
The method that the described insulation system of the utility model is installed on transformer is: in low-voltage coil 4 outsides, each is lacked about 1mm than low-voltage coil 4 two ends to wrap the first gummed paper layer, 1, the first gummed paper layer, 1 two ends earlier, avoids causing coil height higher; Wrap wrinkle ply of paper 2 then, wrinkle ply of paper 2 two ends respectively grow about 40mm than low-voltage coil 4 two ends, in order to form the effect of square ring, increase creepage distance; Wrap the second gummed paper layer 3 afterwards, identical with the first gummed paper layer, 1 method; At last, coiling high-tension coil 5 outside the second gummed paper layer 3.
When coil carried out the assembling of device body, wrinkle ply of paper 2 covered in high-tension coil 5 ends at iron yoke interior section unshakable in one's determination, and iron yoke exterior portions unshakable in one's determination is the nature overhang, avoids blocking oil duct.In coil winding and device body assembling process, crimped paper has bigger stretching and turnover, make full use of the good characteristics of crimped paper ductility, guarantees that crimped paper must not have any breakage, in order to avoid influence insulation effect.
The utility model not only is confined to above-mentioned embodiment; Persons skilled in the art are according to the disclosed content of the utility model; Can adopt other multiple embodiment to implement the utility model, therefore, project organization of every employing the utility model and thinking; Do some simple designs that change or change, all fall into the scope of the utility model protection.
Claims (3)
1. the insulation system of a transformer coil is characterized in that, this insulation system comprises the first gummed paper layer, wrinkle ply of paper and the second gummed paper layer, and said wrinkle ply of paper is between the first gummed paper layer and the second gummed paper layer.
2. insulation system according to claim 1 is characterized in that, the first gummed paper layer and the second gummed paper layer are that the some gummed paper stack of 0.08mm forms by 13 layer thicknesses, and the wrinkle ply of paper is that the crimped paper stack of 0.8mm forms by 2 layer thicknesses.
3. insulation system according to claim 1 and 2 is characterized in that, all stretch out outside the first gummed paper layer or the second gummed paper layer at the two ends of said wrinkle ply of paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203987017U CN202258735U (en) | 2011-10-19 | 2011-10-19 | Insulating structure of transformer coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203987017U CN202258735U (en) | 2011-10-19 | 2011-10-19 | Insulating structure of transformer coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202258735U true CN202258735U (en) | 2012-05-30 |
Family
ID=46119941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203987017U Expired - Fee Related CN202258735U (en) | 2011-10-19 | 2011-10-19 | Insulating structure of transformer coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202258735U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103268806A (en) * | 2013-06-06 | 2013-08-28 | 国家电网公司 | 10kV oil-immersed transformer |
| CN104900379A (en) * | 2015-05-14 | 2015-09-09 | 柳州索能特种变压器有限责任公司 | Oil immersed transformer |
| WO2017093096A1 (en) | 2015-12-02 | 2017-06-08 | Itacoil S.R.L. | Insulating tape for electrical components |
-
2011
- 2011-10-19 CN CN2011203987017U patent/CN202258735U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103268806A (en) * | 2013-06-06 | 2013-08-28 | 国家电网公司 | 10kV oil-immersed transformer |
| CN104900379A (en) * | 2015-05-14 | 2015-09-09 | 柳州索能特种变压器有限责任公司 | Oil immersed transformer |
| WO2017093096A1 (en) | 2015-12-02 | 2017-06-08 | Itacoil S.R.L. | Insulating tape for electrical components |
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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: 20120530 Termination date: 20141019 |
|
| EXPY | Termination of patent right or utility model |