CN202394674U - Oil-immersed transformer - Google Patents
Oil-immersed transformer Download PDFInfo
- Publication number
- CN202394674U CN202394674U CN2011205573552U CN201120557355U CN202394674U CN 202394674 U CN202394674 U CN 202394674U CN 2011205573552 U CN2011205573552 U CN 2011205573552U CN 201120557355 U CN201120557355 U CN 201120557355U CN 202394674 U CN202394674 U CN 202394674U
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- Prior art keywords
- oil
- voltage coil
- insulating paper
- transformer
- coil
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- Expired - Fee Related
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Abstract
The utility model discloses an oil-immersed transformer, which is composed of a high-voltage coil (1), a low-voltage coil (2), an oil tank (3), an insulated paper (4) and oil duct supporting bars (5). The oil-immersed transformer is characterized in that the high-voltage coil (1) is wound on the periphery of the low-voltage coil (2); at least one layer of insulating paper (4) is also wrapped on the periphery of the high-voltage coil (1); a plurality of oil duct supporting bars (5) parallel to an axis of the high-voltage coil (1) are arranged at the inner side of each layer of insulating paper (4); and the additionally arranged insulating paper (4) can increase the insulating property of the high-voltage coil (1) and the inner wall of the oil tank (3) while the oil duct supporting bars (5) additionally arranged on the inner side of the insulating paper (4) enable the transformer oil to flow between two adjacent oil duct supporting bars (5) so as to guarantee radiation of the high-voltage coil (1), so the distance between the high-voltage coil (1) and the inner wall of the oil tank (3) is reduced and can be up to not less than 25mm, and the volume of the oil tank (3) is reduced, thereby reducing oil of the transformer in the oil tank (3) and saving the cost.
Description
Technical field
The utility model relates to a kind of transformer, relates in particular to a kind of oil-filled transformer.
Background technology
Oil-filled transformer low pressure winding generally all adopts Copper Foil around the cylinder mode of taking out except that low capacity adopts copper conductor; The high pressure winding adopts multi-layer cylinder formula structure, makes it the ampere-turn distribution equilibrium of winding, and leakage field is little, and mechanical strength is high, and anti-short circuit capability is strong.Unshakable in one's determination and winding has adopted security measure separately, and fastening parts such as device height, low-voltage lead all are with the self-locking stop nut, have adopted and have not hung core structure, can bear the top shake of transportation.Coil and employing vacuumize unshakable in one's determination, transformer oil adopts the technology of vacuum oil strain and oiling, makes the inner moisture of transformer reduce to minimum.Fuel tank adopts corrugated plate, and it has respiratory function and compensates the change in volume that causes oil because of variations in temperature, so this product does not have oil conservator, has obviously reduced the height of transformer.Because corrugated plate replaced oil conservator, transformer oil is isolated from the outside, cause the decline of insulation property like this with regard to the entering that prevented oxygen, moisture effectively.According to above 5 performances, guaranteed that oil-filled transformer normally not changing oil in the operation, greatly reduces the maintenance cost of transformer, prolonged the useful life of transformer simultaneously.
The high-voltage coil and low-voltage coil of the oil-filled transformer of 10KV electric pressure is layered structure mostly at present; Promptly adopt the coiling of high-voltage coil and low-voltage coil integral type; Direct coiling high-tension coil makes each group (being phase-splitting) coil turn to an integral body continuously on the good low-voltage coil of coiling.Because the inside of high-voltage coil and low-voltage coil and fuel tank all has been full of transformer oil; But thermal diffusivity for insulation property between the inwall that guarantees high-tension coil and fuel tank and high-tension coil; Distance between the inwall of its high-tension coil and fuel tank is general bigger; Generally be not less than 35mm, cause the volume of fuel tank big like this, the transformer oil of inner dress is also many, cost is high.
Summary of the invention
In order to solve above technical problem; The utility model provides the oil-filled transformer that a kind of volume is little, consumption is oily less, cost is low; Constitute by high-tension coil (1), low-voltage coil (2), fuel tank (3), insulating paper (4), oil duct stay (5); It is characterized in that high-tension coil is wound on the low-voltage coil periphery, the periphery of said high-tension coil also is enclosed with one deck insulating paper at least, and the inboard of every layer of insulating paper is provided with some oil duct stays of the axis of parallel high-tension coil.
The beneficial effect of the utility model is: because the periphery of said high-tension coil also is enclosed with one deck insulating paper at least; The inboard of said every layer of insulating paper is provided with some oil duct stays of the axis of parallel high-tension coil, and the insulating paper of increase can increase the insulation property of high-tension coil and inner wall of oil tank, and the oil duct stay of setting up in the inboard of insulating paper makes transformer oil from flowing between the adjacent oil duct stay; Can guarantee the heat radiation of high-tension coil; Can the spacing of high-tension coil and inner wall of oil tank be dwindled like this, can reach and be not less than 25mm, can dwindle the volume of fuel tank; Thereby the transformer oil in the minimizing fuel tank is practiced thrift cost.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
According to shown in Figure 1; The transformer of the utility model; Comprise fuel tank (3), be wound on the high-tension coil (1) of low-voltage coil (2) periphery; The periphery of said high-tension coil (1) also is enclosed with one deck insulating paper (4) at least, and the inboard of said every layer of insulating paper (4) is provided with some oil duct stays (5) of the axis of parallel high-tension coil (1), changes the high-voltage tap lead tap into axial tap by radial simultaneously.Said some oil duct stays (5) evenly distribute along the inside circumference of insulating paper (4).Distance between the center line of the length direction of said adjacent two oil duct stays (5) is 25mm.
Claims (1)
1. oil-filled transformer; Constitute by high-tension coil (1), low-voltage coil (2), fuel tank (3), insulating paper (4), oil duct stay (5); It is characterized in that high-tension coil (1) is wound on low-voltage coil (2) periphery; The periphery of said high-tension coil (1) also is enclosed with one deck insulating paper (4) at least, and the inboard of every layer of insulating paper (4) is provided with some oil duct stays (5) of parallel high-tension coil (1) axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205573552U CN202394674U (en) | 2011-12-28 | 2011-12-28 | Oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205573552U CN202394674U (en) | 2011-12-28 | 2011-12-28 | Oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202394674U true CN202394674U (en) | 2012-08-22 |
Family
ID=46669581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205573552U Expired - Fee Related CN202394674U (en) | 2011-12-28 | 2011-12-28 | Oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202394674U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064331A (en) * | 2014-07-09 | 2014-09-24 | 伊戈尔电气股份有限公司 | Wrapping insulation part for high tension coils of oil-immersed transformer |
| CN104361980A (en) * | 2014-11-10 | 2015-02-18 | 天津市元和华铁电气设备有限公司 | Railway isolation transformer |
-
2011
- 2011-12-28 CN CN2011205573552U patent/CN202394674U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064331A (en) * | 2014-07-09 | 2014-09-24 | 伊戈尔电气股份有限公司 | Wrapping insulation part for high tension coils of oil-immersed transformer |
| CN104361980A (en) * | 2014-11-10 | 2015-02-18 | 天津市元和华铁电气设备有限公司 | Railway isolation transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20121228 |