CN102064019A - Method for processing epoxy resin-encapsulated high voltage coil of air-immersed transformer - Google Patents
Method for processing epoxy resin-encapsulated high voltage coil of air-immersed transformer Download PDFInfo
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- CN102064019A CN102064019A CN2009102351001A CN200910235100A CN102064019A CN 102064019 A CN102064019 A CN 102064019A CN 2009102351001 A CN2009102351001 A CN 2009102351001A CN 200910235100 A CN200910235100 A CN 200910235100A CN 102064019 A CN102064019 A CN 102064019A
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- epoxy resin
- electromagnetic wire
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- high voltage
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Abstract
The invention relates to a method for processing an epoxy resin-encapsulated high voltage coil of an air-immersed transformer, relating to a high voltage coil processing method, and capable of improving combination firmness between electromagnetic wires as well as between an electromagnetic wire and an insulation layer. The method comprises the following steps: firstly, lapping a first non-woven fabric layer on a mould with the cross sectional dimension consistent with an iron core; lapping a first electromagnetic wire layer on the first non-woven fabric layer; immediately lapping a second non-woven fabric layer on the first electromagnetic wire layer, lapping a second electromagnetic wire layer on the second non-woven fabric layer, and repeating the process until meeting the requirement of the number of layers for design; then soaking the lapped high voltage coil into epoxy resin for 3-24 hours, and maintaining the temperature of the epoxy resin while soaking, so as to cause the epoxy resin to be in liquid state; taking out and drying the epoxy resin, solidifying the epoxy resin, so as to obtain a coil with stable structure; and finally sheathing the coil outside the iron core. According to the invention, the working efficiency and mechanic strength of the high voltage coil can be improved, and the service life of the high voltage coil can be greatly prolonged.
Description
Technical field
The present invention relates to a kind of processing method of high-tension coil, relate in particular to the processing method of epoxy resin enclosed dry-type transformer high-tension coil.
Background technology
Prior art is made high-tension coil, generally adopts insulation film, the DMD paper insulating barrier as the electromagnetic wire interlayer, and then integral body is carried out dipping lacquer or resin pickup.But because film, DMD paper poor permeability, carry out to form rigid body completely between electromagnetic wire and layer insulation after epoxy seals; Therefore, after the long-term use of the high-tension coil that adopts said method to process, situations such as cracking may occur trembling in the work, generating heat, in the case, can quicken the aging of film or DMD paper again, and then reduce the task performance of high-tension coil, influence the useful life of high-tension coil.
Summary of the invention
The present invention is directed to above problem, provide a kind of and can make between the electromagnetic wire, combined between electromagnetic wire and the insulating barrier processing method of the higher epoxy resin enclosed dry-type transformer high-tension coil of firmness.
Technical scheme of the present invention is: described high-tension coil comprises iron core, insulating material and electromagnetic wire, and described insulating material adopts nonwoven fabrics and epoxy resin, according to the following steps processing:
At first, wrapped layer of non-woven fabric on the mould consistent with the iron core cross sectional dimensions;
Then, wrapped ground floor electromagnetic wire on this ground floor nonwoven fabrics;
Immediately, wrapped second layer nonwoven fabrics on the ground floor electromagnetic wire, wrapped second layer electromagnetic wire on the second layer nonwoven fabrics, mode is until the number of plies requirement that reaches design according to this;
Then, wrapped good high-tension coil was immersed in the epoxy resin 3～24 hours, between soak period, keep the epoxy resin temperature, epoxy resin is in a liquid state; Take out, dry, behind the epoxy resin cure, make the firm coil of structure;
At last, described coil is set in outside the described iron core, makes.
The present invention adopts nonwoven fabrics as interlayer insulating film, and it has pore, good penetrability, the easier infiltration of epoxy resin; Simultaneously its adhere to, excellent adsorption, when hanging, the upper-lower position nonwoven fabrics can both make between the electromagnetic wire, have sufficient epoxy resin between electromagnetic wire and the nonwoven fabrics.And then after guaranteeing dry solidification, integral body has higher rigidity, and the distribution of inner loop epoxy resins is more even.The present invention can improve the task performance and the mechanical strength of high-tension coil, prolongs its useful life greatly.
Description of drawings
Schematic diagram when Fig. 1 is the invention process
1 is mould among the figure, the 2nd, and electromagnetic wire, the 3rd, nonwoven fabrics, the 4th, joining seam.
Embodiment
The present invention is as shown in Figure 1: described high-tension coil comprises iron core, insulating material and electromagnetic wire 2, and described insulating material adopts nonwoven fabrics 3 and epoxy resin, according to the following steps processing:
At first, wrapped layer of non-woven fabric 3 on the mould consistent 1 with the iron core cross sectional dimensions; During wrapped nonwoven fabrics 3, preferably reduce the width of joining seam 4, guarantee the uniformity on the thickness of insulating layer as far as possible;
Then, wrapped ground floor electromagnetic wire on this ground floor nonwoven fabrics 3;
Immediately, wrapped second layer nonwoven fabrics on the ground floor electromagnetic wire, wrapped second layer electromagnetic wire on the second layer nonwoven fabrics, mode is until the number of plies requirement that reaches design according to this;
Then, wrapped good high-tension coil was immersed in the epoxy resin 3～24 hours, between soak period, keep the epoxy resin temperature, epoxy resin is in a liquid state; Take out, dry, behind the epoxy resin cure, make the firm coil of structure;
At last, described coil is set in outside the described iron core, makes.
Claims (1)
1. the processing method of an epoxy resin enclosed dry-type transformer high-tension coil, described high-tension coil comprises iron core, insulating material and electromagnetic wire, it is characterized in that, described insulating material adopts nonwoven fabrics and epoxy resin, according to the following steps processing:
At first, wrapped layer of non-woven fabric on the mould consistent with the iron core cross sectional dimensions;
Then, wrapped ground floor electromagnetic wire on this ground floor nonwoven fabrics;
Immediately, wrapped second layer nonwoven fabrics on the ground floor electromagnetic wire, wrapped second layer electromagnetic wire on the second layer nonwoven fabrics, mode is until the number of plies requirement that reaches design according to this;
Then, wrapped good high-tension coil was immersed in the epoxy resin 3～24 hours, between soak period, keep the epoxy resin temperature, epoxy resin is in a liquid state; Take out, dry, behind the epoxy resin cure, make the firm coil of structure;
At last, described coil is set in outside the described iron core, makes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102351001A CN102064019A (en) | 2009-11-17 | 2009-11-17 | Method for processing epoxy resin-encapsulated high voltage coil of air-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102351001A CN102064019A (en) | 2009-11-17 | 2009-11-17 | Method for processing epoxy resin-encapsulated high voltage coil of air-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102064019A true CN102064019A (en) | 2011-05-18 |
Family
ID=43999252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102351001A Pending CN102064019A (en) | 2009-11-17 | 2009-11-17 | Method for processing epoxy resin-encapsulated high voltage coil of air-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102064019A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117156A (en) * | 2013-03-01 | 2013-05-22 | 重庆祥龙电气有限公司 | Special-structure epoxy resin encapsulated dry-type transformer |
| CN106130133A (en) * | 2016-08-19 | 2016-11-16 | 深圳市元征科技股份有限公司 | Wireless charging coil module and electronic product thereof |
-
2009
- 2009-11-17 CN CN2009102351001A patent/CN102064019A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117156A (en) * | 2013-03-01 | 2013-05-22 | 重庆祥龙电气有限公司 | Special-structure epoxy resin encapsulated dry-type transformer |
| CN103117156B (en) * | 2013-03-01 | 2016-12-28 | 重庆祥龙电气有限公司 | A kind of epoxy resin enclosed dry-type transformer of special construction |
| CN106130133A (en) * | 2016-08-19 | 2016-11-16 | 深圳市元征科技股份有限公司 | Wireless charging coil module and electronic product thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110518 |