CN203721269U - Lead wire of oil-immersed transformer, and oil-immersed transformer - Google Patents
Lead wire of oil-immersed transformer, and oil-immersed transformer Download PDFInfo
- Publication number
- CN203721269U CN203721269U CN201320855967.9U CN201320855967U CN203721269U CN 203721269 U CN203721269 U CN 203721269U CN 201320855967 U CN201320855967 U CN 201320855967U CN 203721269 U CN203721269 U CN 203721269U
- Authority
- CN
- China
- Prior art keywords
- oil
- wire
- filled transformer
- lead wire
- integument
- Prior art date
- 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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- Coils Of Transformers For General Uses (AREA)
- Insulating Of Coils (AREA)
Abstract
The utility model relates to a lead wire of an oil-immersed transformer. The lead wire comprises a central lead wire body and a wrapping layer outside the central lead wire body. The wrapping layer comprises at least one polyester film layer and may also comprise an insulated layer. The central lead wire body is a copper lead wire or an aluminum lead wire. The utility model also relates to the oil-immersed transformer employing the lead wire. The advantages of the utility model reside in that the voltage resistance strength is higher, the applicable temperature range is wider, the binding is easier, and the copper material is saved. The utility model belongs to the technical field of oil-immersed transformers.
Description
Technical field
The utility model relates to oil-filled transformer technical field, specifically, relates to wire and the oil-filled transformer of oil-filled transformer.
Background technology
The wire of existing oil-filled transformer, comprises the center conductor of conduction and is wrapped in the integument for insulating outside center conductor, this integument is generally independent insulating barrier, as electric insulation paper.The wire of this structure has following shortcoming: 1. proof voltage intensity is low; 2. temperature limit is narrow; 3. insulating barrier tensile strength is low, is unfavorable for wrapping; 4. thickness of insulating layer is large, and when coiling, center conductor consumptive material increases.
Utility model content
For the technical problem existing in prior art, the purpose of this utility model is: provide one more durable, effectively reduce the wire of the oil-filled transformer of center conductor consumptive material.
In order to achieve the above object, the utility model adopts following technical scheme:
A wire for oil-filled transformer, comprising: the integument outside center conductor and center conductor, integument comprises at least one layer of laminated polyester film.
Integument also comprises insulating barrier.
Preferred as one: integument has three layers, comprise and be positioned at the two layers polyester thin layer of internal layer and be positioned at outermost insulating barrier.Insulating barrier is insulating paper.The thickness of integument is in 0.25 millimeter.
Preferred as one: integument has three layers, comprise and be positioned at innermost layer and outermost laminated polyester film and be positioned at middle insulating barrier.Insulating barrier is insulating paper.
Preferred as one: the thickness of laminated polyester film is 0.01-0.05 millimeter.
Preferred as one: center conductor is copper conductor or aluminum conductor.
A kind of oil-filled transformer, the wire of use oil-filled transformer.
Generally speaking, the utlity model has following advantage:
1. laminated polyester film, proof voltage intensity is 16.9kV/mm, higher than conventional wire-wrap paper proof voltage intensity 8kV/mm, proof voltage intensity is higher.
2. laminated polyester film has good high-and low-temperature resistance performance in electrical equipment long-time running, can in 120 DEG C of temperature ranges, use for a long time, short-term is used can resistance to 150 DEG C of high temperature, can resistance to-70 DEG C low temperature, and high and low temperature is very little on its mechanical performance impact, and conventional A class F insulation paper, the allowable temperature of long-time running is only to 105 DEG C, and temperature applicable range is wider.
3. polyester film tensile strength is 150Mpa, and the tensile strength of 0.07 thick conventional wire-wrap paper only has 1.75Mpa, is far smaller than the tensile strength of polyester film, and therefore polyester film for capacitors is extremely conducive to the wrapping of wire.
4. the resistance to diluted acid of polyester film, diluted alkaline, and the oleic acid value content of oil-filled transformer is minimum very suitablely uses in transformer oil.
5. can effectively reduce the consumptive material of center conductor.Two-layer be wrapped copper conductor (center conductor is selected copper conductor) surface of polyester film, and then the insulating paper that is wrapped, integument gross thickness is less than conventional insulation paper bag thickness, the radial thickness of coil that coiling goes out like this can diminish, coil average perimeter shortens, in the situation that coil turn is certain, amount of copper consuming can reduce, and reduces manufacturing cost.
Brief description of the drawings
Fig. 1 is the cutaway view of the wire of the oil-filled transformer of embodiment mono-.
Fig. 2 is the cutaway view of the wire of the oil-filled transformer of embodiment bis-.
Wherein, 1 is copper conductor, and 2 is laminated polyester film, and 3 is insulating barrier, and 4 is aluminum conductor.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Embodiment mono-
The wire of oil-filled transformer comprises: the integument outside center conductor and center conductor.Wherein integument comprises and is positioned at the two layers polyester thin layer of internal layer and is positioned at outermost insulating barrier.Center conductor is copper conductor.Insulating barrier is selected insulating paper.
When wire producing, be wrapped outward after one deck laminated polyester film at copper conductor, then one deck laminated polyester film that is wrapped, the insulating paper that is finally wrapped, gross thickness is 0.25 millimeter.
This wire is applied to the winding of high-tension coil, the insulating paper that radial thickness is commonly used can reduce 5.2mm, and oil-filled transformer can copper-saving 3.69kg, and annual product can be saved more copper material, have good economic benefit.
After tested, the wire of oil-filled transformer is used for to 35 kilowatts with interior oil-filled transformer, can be always in stable power supply state.
Embodiment bis-
The wire of oil-filled transformer comprises: the integument outside center conductor and center conductor.Center conductor is aluminum conductor.Integument comprises three layers, is respectively the laminated polyester film that is positioned at innermost layer, insulating barrier in the middle of being positioned at and be positioned at outermost laminated polyester film.Insulating barrier is selected insulating paper.
Embodiment tri-
The wire of oil-filled transformer comprises: the integument outside center conductor and center conductor.Center conductor is copper conductor.Integument comprises four layers of laminated polyester film stacking gradually.Each laminated polyester film is wrapped in outside copper conductor successively.
Except the mode that the present embodiment is mentioned, laminated polyester film and insulating barrier can also be wrapped up in other quantity and the stacked package of arrangement mode combination layer; Insulating barrier can be selected other the conventional wire insulation materials except insulating paper; Laminated polyester film can adopt other thickness.These mapping modes are all in protection range of the present utility model.
Above-described embodiment is preferably execution mode of utility model; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection range of the present utility model.
Claims (10)
1. a wire for oil-filled transformer, comprising: the integument outside center conductor and center conductor, is characterized in that: described integument comprises at least one layer of laminated polyester film.
2. according to the wire of oil-filled transformer claimed in claim 1, it is characterized in that: described integument also comprises insulating barrier.
3. according to the wire of oil-filled transformer claimed in claim 2, it is characterized in that: described integument has three layers, comprise and be positioned at the two layers polyester thin layer of internal layer and be positioned at outermost insulating barrier.
4. according to the wire of oil-filled transformer claimed in claim 3, it is characterized in that: described insulating barrier is insulating paper.
5. according to the wire of oil-filled transformer claimed in claim 4, it is characterized in that: the thickness of described integument is in 0.25 millimeter.
6. according to the wire of oil-filled transformer claimed in claim 2, it is characterized in that: described integument has three layers, comprise and be positioned at innermost layer and outermost laminated polyester film and be positioned at middle insulating barrier.
7. according to the wire of oil-filled transformer claimed in claim 6, it is characterized in that: described insulating barrier is insulating paper.
8. according to the wire of the oil-filled transformer described in any one in claim 1 to 7, it is characterized in that: the thickness of described laminated polyester film is 0.01-0.05 millimeter.
9. according to the wire of the oil-filled transformer described in any one in claim 1 to 7, it is characterized in that: described center conductor is copper conductor or aluminum conductor.
10. an oil-filled transformer, is characterized in that: right to use requires the wire of the oil-filled transformer described in any one in 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320855967.9U CN203721269U (en) | 2013-12-23 | 2013-12-23 | Lead wire of oil-immersed transformer, and oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320855967.9U CN203721269U (en) | 2013-12-23 | 2013-12-23 | Lead wire of oil-immersed transformer, and oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203721269U true CN203721269U (en) | 2014-07-16 |
Family
ID=51160406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320855967.9U Expired - Fee Related CN203721269U (en) | 2013-12-23 | 2013-12-23 | Lead wire of oil-immersed transformer, and oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203721269U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107527730A (en) * | 2017-08-07 | 2017-12-29 | 河南森源电气股份有限公司 | A kind of coil block and the electric equipment and its manufacture method using the coil block |
-
2013
- 2013-12-23 CN CN201320855967.9U patent/CN203721269U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107527730A (en) * | 2017-08-07 | 2017-12-29 | 河南森源电气股份有限公司 | A kind of coil block and the electric equipment and its manufacture method using the coil block |
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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: 20140716 Termination date: 20211223 |