CN204204588U - A kind of dry-type transformer high pressure winding - Google Patents
A kind of dry-type transformer high pressure winding Download PDFInfo
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- CN204204588U CN204204588U CN201420435346.XU CN201420435346U CN204204588U CN 204204588 U CN204204588 U CN 204204588U CN 201420435346 U CN201420435346 U CN 201420435346U CN 204204588 U CN204204588 U CN 204204588U
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Abstract
The utility model provides a kind of dry-type transformer high pressure winding, comprise the grid cloth of the inner core of coil internal layer, along grid cloth enamelled wire or the nonwoven fabrics envelope curve of inner core, glass fiber covered wire carries out the winding of coiling, for ensureing the needs of intersegmental electric insulation, trapezoidal end is arranged at the two ends of each section of winding, the number of turn of the wire of every layer of winding is successively superposed to successively decrease by nexine outer layers and forms trapezoidal end, rectangular section spacing coiling in the middle of described winding some layers of protection support lattice cloth, the skin of described winding is wound with one deck grid cloth, the end that in the middle of described high pressure winding, the thickness of coiling protection support lattice cloth is intersegmental with described winding intermediate rectangular parallels, play the effect supporting adjacent two planar coils, and completely ensure certain distance from, and topping wire can not be produced subside and the phenomenon of the insulation distance deficiency caused in the process vacuumizing casting resin.
Description
technical field:
The utility model relates to a kind of dry-type transformer high pressure winding, is specifically related to a kind of transformer high-voltage winding construction preventing enamelled wire slippage.
background technology:traditional transformer high-voltage winding construction, the initial circle coil of each end winding misplaces next layer line circle desired location, starting of every layer of initial circle coil is connected with the complete head of lower the last circle of one deck, the number of turn of the wire of every layer of winding is successively successively decreased by nexine outer layers and is formed trapezoidal end, in the process vacuumizing casting resin, because the interlude rectangle spacing between high pressure winding may the slippage of wire in winding when tilting, and cause the wire dropping of upper strata winding, in the problem of carrying out causing in withstand voltage test process puncturing, affect the qualification rate of coil finished product.
utility model content:
The purpose of this utility model is to provide a kind of high pressure winding of ast resin transformer being suitable for SC (B) 10, SC (B) 11, be specifically related to a kind of transformer high-voltage winding construction preventing enamelled wire slippage, thus improve the qualification rate of coil finished product.
For achieving the above object, the utility model adopts following technical scheme: a kind of dry-type transformer high pressure winding, comprise the grid cloth of the inner core of coil internal layer, grid cloth enamelled wire along inner core carries out the winding of coiling, trapezoidal end is arranged in one end of each section of winding, the initial circle coil of each end winding misplaces next layer line circle desired location, starting of every layer of initial circle coil is connected with the complete head of lower the last circle of one deck, the number of turn of the wire of every layer of winding is successively successively decreased by nexine outer layers and is formed trapezoidal end, the interlayer of the wire of described every layer of winding is provided with DMD material, DMD material is fixed on described winding by the coiling of alkali-free glass fibre band, rectangle spacing coiling in the middle of described winding some layers of protection support lattice cloth, the skin of described winding is wound with one deck grid cloth, in the middle of described winding, the thickness of coiling protection support lattice cloth parallels with the end of the trapezoidal end of described winding.
Further, the protection support lattice cloth of the rectangle spacing coiling in the middle of described winding is provided with alkali-free glass fibre band to carry out coiling and fixes.
Further, described protection support lattice cloth is fiberglass gridding cloth.
Further, the specification of described protection support lattice cloth is 2*3mm.
Further, the grid cloth of the outer coiling of described winding is also wound with one deck alkali-free glass fibre band.
Further, described winding nonwoven fabrics envelope curve or glass fiber covered wire carry out row coiling.
The beneficial effects of the utility model: transformer layer insulation and surperficial reinforcement material glass resin grid cloth are as support, completely ensure certain distance from, and the phenomenon that topping wire is subsided can not be produced in the process vacuumizing casting resin, ensure the qualification rate of coil finished product.And this grid cloth is between making layer and the remaining dead meal got off of surperficial reinforcement material, because protection support lattice cloth is filled with the space of intermediate rectangular spacing, significantly can reduce the consumption of poured with epoxy resin when pouring into a mould, reaching the effect of energy-saving and emission-reduction.
accompanying drawing illustrates:
Accompanying drawing 1 is the transformer high-voltage winding profile of embodiment of the present utility model.
embodiment:
Below in conjunction with accompanying drawing, the utility model is further illustrated:
With reference to a kind of dry-type transformer high pressure winding embodiment illustrated in fig. 1, comprise the grid cloth 11 of the inner core of coil internal layer 12, carry out the winding 15 of coiling with enamelled wire along the grid cloth 11 of inner core, trapezoidal end is arranged in one end of each section of winding 15, the initial circle coil of each end winding 15 misplaces next layer line circle desired location, starting of every layer of initial circle coil is connected with the complete head of lower the last circle of one deck, the number of turn of the enamelled wire of every layer of winding 15 is successively successively decreased by nexine outer layers and is formed trapezoidal end, intersegmental trapezoidal mouth 14 is defined between two sections of windings, the interlayer of the enamelled wire of described every layer of winding 15 is provided with DMD insulating material, DMD insulating material is fixed on described winding 15 by the coiling of alkali-free glass fibre band, rectangle spacing 17 coiling in the middle of described winding 15 some layers of protection support lattice cloth 18, the skin of described winding 15 is wound with one deck grid cloth 13, the thickness of described winding 15 middle coiling protection support lattice cloth 18 parallels with the end of the described trapezoidal end of winding 15.
In the present embodiment, the some layers of protection support lattice cloth 18 of rectangular section spacing 17 coiling in the middle of described high pressure winding, ensure that the certain distance of the rectangle spacing 18 in the middle of winding 15 is from, the slippage of enamelled wire in winding 15 when avoiding inclination.
In the present embodiment, because the rectangle spacing 17 in the middle of winding 15 has the abundant filling of protection support lattice cloth 18, the phenomenon that upper strata winding 15 enamelled wire subsides can not be produced in the process vacuumizing casting resin, carrying out in withstand voltage test process, reduce because the enamelled wire slippage problem of winding 15 causes puncturing, and affect the problem of the qualification rate of coil finished product.
In this example, rectangular section spacing 17 coiling in the middle of described winding 15 some layers of protection support lattice cloth 18, in the process vacuumizing casting resin, because protection support lattice cloth 18 is filled with the space of middle rectangular section spacing 17, significantly can reduce the consumption of poured with epoxy resin.
As further improvement of this embodiment, the protection support lattice cloth 18 of rectangle spacing 17 coiling in the middle of described winding 15 is provided with alkali-free glass fibre band between layers and carries out coiling, the outer grid cloth 13 of described coil skin 16 is also wound with one deck alkali-free glass fibre band, thus improves the stability of protection support lattice cloth 18.
As preferably, described protection support lattice cloth 18 is glass resin grid cloth, and the specification of described protection support lattice cloth 18 is 2*3mm, significantly can reduce the consumption of poured with epoxy resin.As preferably, described winding nonwoven fabrics envelope curve carries out coiling.
As preferably, described winding glass fiber covered wire carries out coiling.
Certainly, these are only the utility model better embodiment, not limit the scope of application of the present utility model with this, other equivalent structure substituted any is all within its protection range.
Claims (6)
1. a dry-type transformer high pressure winding, comprise the grid cloth of the inner core of coil internal layer, grid cloth enamelled wire along inner core carries out the winding of coiling, it is characterized in that: trapezoidal end is arranged in one end of each section of winding, the initial circle coil of each end winding misplaces next layer line circle desired location, starting of every layer of initial circle coil is connected with the complete head of lower the last circle of one deck, the number of turn of the wire of every layer of winding is successively successively decreased by nexine outer layers and is formed trapezoidal end, the interlayer of the wire of described every layer of winding is provided with DMD material, DMD material is fixed on described winding by the coiling of alkali-free glass fibre band, rectangle spacing coiling in the middle of described winding some layers of protection support lattice cloth, the skin of described winding is wound with one deck grid cloth, in the middle of described winding, the thickness of coiling protection support lattice cloth parallels with the end of the trapezoidal end of described winding.
2. a kind of dry-type transformer high pressure winding according to claim 1, is characterized in that: the protection support lattice cloth of the rectangle spacing coiling in the middle of described winding is provided with alkali-free glass fibre band to carry out coiling and fix.
3. a kind of dry-type transformer high pressure winding according to claim 1, is characterized in that: described protection support lattice cloth is fiberglass gridding cloth.
4. a kind of dry-type transformer high pressure winding according to claim 1, is characterized in that: the specification of described protection support lattice cloth is 2*3mm.
5. a kind of dry-type transformer high pressure winding according to any one of claim 1-4, is characterized in that: the grid cloth of the outer coiling of described winding is also wound with one deck alkali-free glass fibre band.
6. a kind of dry-type transformer high pressure winding according to any one of claim 1-4, is characterized in that: described winding nonwoven fabrics envelope curve or glass fiber covered wire carry out row coiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420435346.XU CN204204588U (en) | 2014-08-04 | 2014-08-04 | A kind of dry-type transformer high pressure winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420435346.XU CN204204588U (en) | 2014-08-04 | 2014-08-04 | A kind of dry-type transformer high pressure winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204204588U true CN204204588U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420435346.XU Active CN204204588U (en) | 2014-08-04 | 2014-08-04 | A kind of dry-type transformer high pressure winding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109826A (en) * | 2017-12-12 | 2018-06-01 | 辽宁华冶集团发展有限公司 | A kind of mining general epoxy cast dry transformer trapezoidal coil structure |
| CN108492979A (en) * | 2018-05-11 | 2018-09-04 | 上海南桥变压器有限责任公司 | Insulating cylinder pouring procedure between 10kV grounding transformer high-voltage windings |
-
2014
- 2014-08-04 CN CN201420435346.XU patent/CN204204588U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109826A (en) * | 2017-12-12 | 2018-06-01 | 辽宁华冶集团发展有限公司 | A kind of mining general epoxy cast dry transformer trapezoidal coil structure |
| CN108492979A (en) * | 2018-05-11 | 2018-09-04 | 上海南桥变压器有限责任公司 | Insulating cylinder pouring procedure between 10kV grounding transformer high-voltage windings |
| CN108492979B (en) * | 2018-05-11 | 2021-04-02 | 上海南桥变压器有限责任公司 | Pouring method for insulating cylinder between high-voltage windings of 10kV grounding transformer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |