CN204884809U - High -pressure coil of epoxy transformer - Google Patents
High -pressure coil of epoxy transformer Download PDFInfo
- Publication number
- CN204884809U CN204884809U CN201520654051.6U CN201520654051U CN204884809U CN 204884809 U CN204884809 U CN 204884809U CN 201520654051 U CN201520654051 U CN 201520654051U CN 204884809 U CN204884809 U CN 204884809U
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- CN
- China
- Prior art keywords
- section
- pressure coil
- coil
- tension coil
- epoxy
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a high -pressure coil of epoxy transformer, this high -pressure coil of adopts continuous type disc coil, is formed by the single continuous coiling of flat type copper wire, connects the non -woven fabrics that is provided with 0.23mm between every section high -pressure coil's of saying two circle coils at the first end, and the two circle coils of saying at the first end are twined by ribbons of glass with the non -woven fabrics to be fixed. Being provided with between every section high -pressure coil and cutting the glass silk felt of cutting into chunks, this glass silk felt is the 2 -3 section, and the segmentation is packed and is set up. It is accomplished by epoxy vacuum casting to fill good high -pressure coil. The utility model discloses a cushioning non -woven fabrics has strengthened the intersegmental adjacent wire dielectric strength of high -pressure coil, and simultaneously the non -woven fabrics has fine permeability, and epoxy permeate the back, makes every high -pressure coil section and glass silk felt keep apart, can prevent glass silk felt in alkaline ion communicate with the wire, strengthened the intersegmental dielectric strength of high -pressure coil, the security that has improved the product to manufacturing cost has been practiced thrift to design time reducible section insulation distance.
Description
Technical field
The utility model relates to converting equipment field, particularly relates to a kind of high-tension coil of epoxy resin transformer.
Background technology
The high-tension coil intersegmental use glass fiber felt of pure epoxy resin cast is filled and is strengthened.Traditional structure is: in the intersegmental gap of coil, is filled with the glass fiber felt of once shear forming, and then casting epoxy resin under vacuum state.Because domestic glass fiber felt makes the Process Quality Control difference of enterprise, the alkali metal oxide content in glass fiber felt is easily caused to exceed standard.Alkali ion has higher transfer ability under high voltages, and electrical property is degenerated.Interface is had to exist in the compound inslation that glass fiber felt and epoxy resin cure are formed in addition, the intersegmental ceiling voltage that bears of high-tension coil is 35kV(35kV level high-tension coil test voltage), the interface existed in alkali metal oxide in glass fiber felt and compound inslation, intersegmental adjacent wires will be caused under high voltages along face arcing electric discharge, burn coil.
For above-mentioned reasons, can only amplify during design certain distance from, reduce this place's electric field strength, this structural design causes very large waste.
Utility model content
The purpose of this utility model is, overcomes the deficiencies in the prior art part, provides a kind of simple and reasonable, improves the high-tension coil of the epoxy resin transformer of transformer performance.
The high-tension coil of a kind of epoxy resin transformer described in the utility model, this high-tension coil adopts continous way disc coil, formed by single flat type copper wire continuous coiling, between the first and last two circle coil of said high-tension coil every section, be connected with the nonwoven fabrics of 0.23mm, said first and last two circle coil and nonwoven fabrics are fastened by glass tape.Between every section of high-tension coil, be provided with the glass fiber felt of the section of cutting into, this glass fiber felt is 2-3 section, and subsection filling is arranged.Populated high-tension coil is by epoxide resin vacuum casting complete.
The beneficial effects of the utility model are: by cushioning nonwoven fabrics, enhance the intersegmental adjacent wires dielectric strength of high-tension coil, nonwoven fabrics has good permeability simultaneously, after epoxy infiltration, each high-tension coil section and glass fiber felt are isolated, glass fiber felt neutral and alkali ion can be prevented to be communicated with wire, enhance high-tension coil section insulation intensity, solve the intersegmental generation along face creepage phenomenon of high-tension coil, improve the fail safe of product, and section insulation distance can be reduced when designing, save manufacturing cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the high-tension coil of a kind of epoxy resin transformer described in the utility model; 1-high-tension coil 2-nonwoven fabrics 3-glass fiber felt.
Embodiment
Referring now to accompanying drawing 1, be described as follows: a kind of high-tension coil of epoxy resin transformer in conjunction with the embodiments, this high-tension coil 1 adopts continous way disc coil, formed by single flat type copper wire continuous coiling, between the said high-tension coil 1 first and last two circle coil of every section, be connected with the nonwoven fabrics 2 of 0.23mm, said first and last two circle coil and nonwoven fabrics 2 are fastened by glass tape.Between every section of high-tension coil, be provided with the glass fiber felt 3 of the section of cutting into, this glass fiber felt 3 is 2-3 section, and subsection filling is arranged.Populated high-tension coil 1 is by epoxide resin vacuum casting complete.
The beneficial effects of the utility model are: by cushioning nonwoven fabrics, enhance the intersegmental adjacent wires dielectric strength of high-tension coil, nonwoven fabrics has good permeability simultaneously, after epoxy infiltration, each high-tension coil section and glass fiber felt are isolated, glass fiber felt neutral and alkali ion can be prevented to be communicated with wire, enhance high-tension coil section insulation intensity, solve the intersegmental generation along face creepage phenomenon of high-tension coil, improve the fail safe of product, and section insulation distance can be reduced when designing, save manufacturing cost.
Claims (1)
1. the high-tension coil of an epoxy resin transformer, it is characterized in that: this high-tension coil (1) adopts continous way disc coil, formed by single flat type copper wire continuous coiling, the nonwoven fabrics (2) of 0.23mm is connected with between the first and last two circle coil of said high-tension coil (1) every section, said first and last two circle coil and nonwoven fabrics (2) are fastened by glass tape, the glass fiber felt (3) of the section of cutting into is provided with between every section of high-tension coil, this glass fiber felt (3) is 2-3 section, subsection filling is arranged, populated high-tension coil (1) is by epoxide resin vacuum casting complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654051.6U CN204884809U (en) | 2015-08-27 | 2015-08-27 | High -pressure coil of epoxy transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654051.6U CN204884809U (en) | 2015-08-27 | 2015-08-27 | High -pressure coil of epoxy transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204884809U true CN204884809U (en) | 2015-12-16 |
Family
ID=54829159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520654051.6U Expired - Fee Related CN204884809U (en) | 2015-08-27 | 2015-08-27 | High -pressure coil of epoxy transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204884809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106971826A (en) * | 2017-03-31 | 2017-07-21 | 浙江埃能德电气有限公司 | Toroidal transformer |
-
2015
- 2015-08-27 CN CN201520654051.6U patent/CN204884809U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106971826A (en) * | 2017-03-31 | 2017-07-21 | 浙江埃能德电气有限公司 | Toroidal transformer |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20200827 |