CN204497034U - 35kV oil-immersed transformer high-voltage coils - Google Patents
35kV oil-immersed transformer high-voltage coils Download PDFInfo
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- CN204497034U CN204497034U CN201520183047.6U CN201520183047U CN204497034U CN 204497034 U CN204497034 U CN 204497034U CN 201520183047 U CN201520183047 U CN 201520183047U CN 204497034 U CN204497034 U CN 204497034U
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Abstract
35kV oil-immersed transformer high-voltage coils described in the utility model relates to the fixing and assembling of general parts coil in transformer.Described 35kV oil-immersed transformer high-voltage coils, described coil is divided into I, II, III and IV section, and every section is wound around multilayer around respective central shaft respectively, and interlayer is connected successively; Space between every section of coil is insulating oil duct district, and oil duct is filled with insulating oil in district; Its coil I and II section of series connection, III and IV section of series connection; And the outermost layer of every section of coil is provided with at least one tap lifts one's head.The utility model has the advantages that: coil is divided into I, II, III, IV section.This coil is practical, and reliability is high.By splitting cleverly coil, greatly reducing interlayer and intersegmental voltage, decreasing the use of insulating material, shorten insulation distance, improve the reliability of longitudinal insulation.Carry out 4 sections of segmentations, winding protruding head can be made all to extract out from skin, the operation of the workman of great convenience.
Description
Technical field
The utility model relates to the fixing and assembling of general parts coil in transformer.
Background technology
The winding method of oil-filled transformer multilayer layer coil common is at present as Fig. 1, and the large section of coil winding 1, is divided into several layers, every layer of series connection.Adopt this kind of winding, when the number of plies one timing, then each layer number of turn increases, and interlayer operating voltage is high, and layer insulation thickens, and the radial size of winding is increased.Under 35kV and the antivacuum note oil condition of following small transformers, when layer insulation is too thick, likely make layer insulation can not good immersion oil, thus affect electrical strength.
Summary of the invention
The utility model aims to provide one can improve coiling efficiency, the 35kV oil-immersed transformer high-voltage coils in extension coil life-span.
35kV oil-immersed transformer high-voltage coils described in the utility model, described coil is divided into I, II, III and IV section, and every section is wound around multilayer around respective central shaft respectively, and interlayer is connected successively; Space between every section of coil is insulating oil duct district, and oil duct is filled with insulating oil in district; Its coil I and II section of series connection, III and IV section of series connection; And the outermost layer of every section of coil is provided with at least one tap lifts one's head.
Preferably, I, one of any and III, IV section of coil one of any of II section of coil is equipped with tap at the outermost layer of its coil and goes out Head Section, the tap that each tap goes out in Head Section to be provided with several numbers of turn different is lifted one's head, these taps lift one's head all with the coils connected in series at respective place.
The utility model has the advantages that: coil is divided into I, II, III, IV section.This coil is practical, and reliability is high.By splitting cleverly coil, greatly reducing interlayer and intersegmental voltage, decreasing the use of insulating material, shorten insulation distance, improve the reliability of longitudinal insulation.Carry out 4 sections of segmentations, winding protruding head can be made all to extract out from skin, the operation of the workman of great convenience.
Owing to adopting this structure, when can make the laminar coiling of 35kV oil-filled transformer coil, difficulty reduces, and efficiency improves, and quality more easily ensures, also improves the scope of application of sectional circular drum type coil to a certain extent.
Accompanying drawing explanation
Fig. 1 is oil-immersed transformer high-voltage coils winding structure schematic diagram in prior art
Fig. 2 is the structural representation of 35kV oil-filled transformer high pressure in embodiment one
Fig. 3 is Fig. 2 coil number of turn schematic diagram
In figure: 1, normal number of turn district; 2, oil duct district; 3, tap goes out Head Section.
Embodiment
Embodiment one
Now be further described this use is novel by reference to the accompanying drawings, wherein described by Fig. 2 and Fig. 3 is its rated capacity 1000kVA, rated high voltage 36.5kV, and range of regulation-5 ~+5% is 36.5
the high-tension coil of × 2.5%kV, this coil uses cable paper envelope curve to carry out coiling, bag paper thickness 0.45mm.
As shown in Figure 2,35kV oil-immersed transformer high-voltage coils of the present utility model, is divided into I, II, III and IV section, its coil I and II section of series connection, III and IV section of series connection.
Every section of coil is wound around multilayer around respective central shaft respectively, and interlayer is connected successively.I and IV section of outermost layer is respectively provided with a tap and lifts one's head, and II and III section of outermost layer is provided with tap and goes out Head Section 3, and the coil in each section of other floor all belongs to normal number of turn district 1.Space between every section of coil is insulating oil duct district 2, and oil duct is filled with insulating oil in district.II lifts one's head with the tap that the tap of III section goes out in Head Section to be respectively provided with three numbers of turn different, and these taps are lifted one's head and the tap of I and IV section is lifted one's head and all connected with the normal number of turn district forward of its place coil separately.
Compared with the coil that coil described in the present embodiment is identical with total number of turns in prior art, its parameters is as following table:
table 1: the contrast of the present embodiment and prior art
Can be found out the coil interlayer voltage step-down in the present embodiment by the contrast of table 1, layer insulation quantity reduces, and therefore effectively improves coiling efficiency, ensure that insulation quality, extends load useful life.
This utility model not only can be applicable in the present embodiment, and when electric pressure requires higher, the hop count of coil can carry out adding to meet the demands on the basis of this example.
Claims (2)
1.35kV oil-immersed transformer high-voltage coils, is characterized in that described coil is divided into I, II, III and IV section, and every section is wound around multilayer around respective central shaft respectively, and interlayer is connected successively; Space between every section of coil is insulating oil duct district (2), and oil duct district is filled with insulating oil in (2); Its coil I and II section of series connection, III and IV section of series connection; And the outermost layer of every section of coil is provided with at least one tap lifts one's head.
2. 35kV oil-immersed transformer high-voltage coils as claimed in claim 1, what it is characterized in that the one of any of I, II section of coil and III, IV section of coil one of any be equipped with tap at the outermost layer of its coil and go out Head Section (3), each tap goes out the tap being provided with several numbers of turn different in Head Section (3) and lifts one's head, these taps lift one's head all with the coils connected in series at respective place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520183047.6U CN204497034U (en) | 2015-03-30 | 2015-03-30 | 35kV oil-immersed transformer high-voltage coils |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520183047.6U CN204497034U (en) | 2015-03-30 | 2015-03-30 | 35kV oil-immersed transformer high-voltage coils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204497034U true CN204497034U (en) | 2015-07-22 |
Family
ID=53576329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520183047.6U Expired - Fee Related CN204497034U (en) | 2015-03-30 | 2015-03-30 | 35kV oil-immersed transformer high-voltage coils |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204497034U (en) |
-
2015
- 2015-03-30 CN CN201520183047.6U patent/CN204497034U/en not_active Expired - Fee Related
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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: 20150722 Termination date: 20200330 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |