CN202282230U - High-voltage coil of graded-insulation dry type transformer - Google Patents
High-voltage coil of graded-insulation dry type transformer Download PDFInfo
- Publication number
- CN202282230U CN202282230U CN2011203901124U CN201120390112U CN202282230U CN 202282230 U CN202282230 U CN 202282230U CN 2011203901124 U CN2011203901124 U CN 2011203901124U CN 201120390112 U CN201120390112 U CN 201120390112U CN 202282230 U CN202282230 U CN 202282230U
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- insulation
- coil
- layer
- graded
- type transformer
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Abstract
The utility model relates to a high-voltage coil of a graded-insulation dry type transformer, which comprises a coil and insulation layers, wherein one insulation layer is arranged between every two coils, and one insulation layer is additionally arranged on a part from the middle part to the tail end of an outer layer coil along a coiling direction. According to the utility model, field intensity distribution of a high-voltage winding is reasonably utilized, graded placement is adopted in interlayer insulation, an interlayer insulation layer is reasonable in layout and is convenient for wounding, the consumption of the interlayer insulation material can be reduced on the premise of ensuring insulation strength, utilization rate of interlayer insulation is increased, and cost is reduced. The high-voltage coil of the graded-insulation dry type transformer has the advantages of simple and reasonable structure, convenience for coiling, reduction in consuming the insulation material, and no reduction in insulation effect.
Description
Technical field
The utility model relates to a kind of technical field of dry-type transformer, specifically a kind of high-tension coil of graded insulation dry-type transformer.
Background technology
In the production of dry-type transformer, mostly high-tension coil is cylinder laminar winding, and the use of layer insulation does not have difference usually; The thickness that is layer insulation is consistent with quantity, in the high-tension coil, between every two-layer coil or a layer insulating all is set; All be set to dielectric layers,, need between two-layer coil, dielectric layers be set sometimes in order to guarantee electrical strength; The interlayer of whole like this high-tension coil just all is set to dielectric layers; To such an extent as to the voltage difference smaller part is a dielectric layers also, thereby cause the insulating material use amount to increase, improved cost.
Summary of the invention
The utility model provides a kind of simple and reasonable for structure in order to overcome above-mentioned defective, is convenient to coiling, reduces the consumption of insulating material and does not reduce the high-tension coil of the graded insulation dry-type transformer of insulation effect.
The technical scheme that the utility model adopts is: a kind of high-tension coil of graded insulation dry-type transformer; Comprise coil and insulating barrier; One layer insulating is set between the two-layer coil, between every two-layer coil, increases by a layer insulating along the not end place of direction of winding at medium position to outer coil.
Because the winding field strength distribution of the high-tension coil of dry-type transformer is that the insulation level of neutral point part is lower than the insulation level of end winding; Therefore; The utility model adopts high-tension coil the structure of graded insulation; Between every two-layer coil; On the basis of the basic insulation level that guarantees a layer insulating, increased by a layer insulating at medium position to outer coil again along the not end place of direction of winding, a layer insulating that is about to be provided with between the original two-layer coil is improved to: the medium position between the two-layer coil is the dielectric layers structure to the not end place of outer coil.This structure can reach the use amount that the dielectric strength that dielectric layers is set between the coil entirely can reduce interlayer dielectic again, has improved the utilance of layer insulation, has reduced cost.
Description of drawings
Fig. 1 is the sketch map of the utility model.
Embodiment
Combine accompanying drawing that the utility model is further described at present; Fig. 1 is a kind of embodiment of the utility model; Comprise coil 1 and insulating barrier 2, a layer insulating 2 is set between the two-layer coil 1, and between every two-layer coil 1; Increase by a layer insulating 2 at medium position to outer coil 1 along the not end place of direction of winding, the latter half that promptly two-layer coil is 1 is a dielectric layers 2.The high-tension coil 1 of transformer all adopts the copper cash coiling to form, and existing explanation is its concrete implementation down: after 1 coiling of ground floor coil finishes, place first interlayer insulating film 2; Continue coiling second layer coil 1,, place second insulating barrier 2 in the outside of first insulating barrier 2 when second layer coil 1 coiling one half; It is half that the area of second insulating barrier 2 is about first insulating barrier 2, places the 3rd insulating barrier 2 after then 1 coiling of second layer coil being finished, and continues coiling the 3rd layer line circle 1; When the 3rd layer line circle 1 coiling one half; Place 2, the four insulating barriers 2 of the 4th insulating barrier the 3rd insulating barrier 2 outsides and also be about the half the of the 3rd insulating barrier 2, continue coiling the 3rd layer line circle 1 then; By that analogy, outermost layer was not placed insulating barrier 2 after all 1 layer of coiling of coil finished.
The utility model rationally utilizes the field strength distribution of high pressure winding, and layer insulation adopts classification to place, and interlayer insulating film 2 is rationally distributed; Be convenient to coiling; In the use amount of guaranteeing can reduce again under the dielectric strength prerequisite interlayer dielectic, improved the utilance of layer insulation, reduced cost.
The utlity model has simple and reasonable for structurely, be convenient to coiling, reduce the consumption of insulating material and do not reduce the characteristics of insulation effect.
Claims (1)
1. the high-tension coil of a graded insulation dry-type transformer comprises coil and insulating barrier, and a layer insulating is set between the two-layer coil, it is characterized in that: between every two-layer coil, increase by a layer insulating at medium position to outer coil along the not end place of direction of winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203901124U CN202282230U (en) | 2011-10-14 | 2011-10-14 | High-voltage coil of graded-insulation dry type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203901124U CN202282230U (en) | 2011-10-14 | 2011-10-14 | High-voltage coil of graded-insulation dry type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202282230U true CN202282230U (en) | 2012-06-20 |
Family
ID=46228387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203901124U Expired - Fee Related CN202282230U (en) | 2011-10-14 | 2011-10-14 | High-voltage coil of graded-insulation dry type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202282230U (en) |
-
2011
- 2011-10-14 CN CN2011203901124U patent/CN202282230U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20171014 |