CN103489597A - Novel transformer insulation structure - Google Patents
Novel transformer insulation structure Download PDFInfo
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- CN103489597A CN103489597A CN201310442797.6A CN201310442797A CN103489597A CN 103489597 A CN103489597 A CN 103489597A CN 201310442797 A CN201310442797 A CN 201310442797A CN 103489597 A CN103489597 A CN 103489597A
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Abstract
The invention relates to a novel transformer coil insulation structure which comprises an iron core post, an upper iron yoke insulator, an upper iron yoke partition, a lower iron yoke partition, an upper high-voltage coil end insulator, a lower high-voltage coil end insulator, an upper low-voltage coil end insulator, a lower low-voltage coil end insulator, a phase partition, a supporting plate, an insulating cylinder, a high and low voltage coil-to-coil paperboard, a brace, a low-voltage coil, a high-voltage coil, an upper formed sectioning angle ring and a lower formed sectioning angle ring. The low-voltage coil is sleeved outside the iron core post, and the high-voltage coil is sleeved outside the low-voltage coil. A main insulation distance inside a transformer is narrowed, the size and the cost of the transformer are reduced, and market competitiveness is improved.
Description
Technical field
The present invention relates to the insulation system of transformer coil.
Background technology
At present, transformer capacity 40000kVA and following, voltage is combined as high pressure 35kV/ low pressure 10kV or high pressure 35/ low pressure 6.3kV product section transformer high-low-voltage intercoil insulation distance and coil upper and lower end parts to problems such as insulation distances between the Double layer iron yoke.This capacity section comprises two kinds of insulation system patterns, and the first is capacity 10000kVA～40000kVA insulation system, and the second is capacity 8000kVA and following insulation system, and these two kinds of structural insulation distances are excessive, and the Electric Field Distribution of end winding is not ideal enough.
Summary of the invention
The object of the invention is to solve above-mentioned deficiency of the prior art, a kind of novel transformer insulation system is provided.
To achieve these goals, technical scheme of the present invention is: a kind of novel transformer insulation system, it comprises iron core column, the upper yoke insulation, the lower yoke insulation, the upper yoke dividing plate, the lower yoke dividing plate, upper high-voltage coil end insulation, lower high-voltage coil end insulation, upper low-voltage coil end insulation, lower low-voltage coil end insulation, phase partition, fagging, insulating cylinder, cardboard between high-voltage coil and low-voltage coil, stay, low-voltage coil and high-tension coil, described novel transformer insulation system also comprises moulding distinguish square ring, compacted under distinguish square ring, described low-voltage coil is set in the iron core column outside, described high-tension coil is set in described low-voltage coil outside,
Between the stay of the vertical component of described upper moulding distinguish square ring and compacted under distinguish square ring on cardboard between the high-voltage coil and low-voltage coil of described low-voltage coil outside and described high-tension coil internal diameter, the upper and lower two ends of described stay have the depression of the vertical component of receiving described upper moulding distinguish square ring and compacted under distinguish square ring
Described upper moulding distinguish square ring and horizontal component between the upper high-voltage coil end insulation on described high-tension coil top and described upper yoke dividing plate, described compacted under distinguish square ring and horizontal component the lower high-voltage coil end of described high-tension coil bottom insulate and described lower yoke dividing plate between.
As preferably, described upper moulding distinguish square ring and compacted under distinguish square ring are spliced by a plurality of distinguish, and each distinguish is divided into and two-layerly mutually staggers in lap-joint, and the thickness of every layer is 1mm, and the quantity of distinguish is half of described stay quantity.
As preferably, also be provided with described fagging and insulating cylinder between described iron core column and described low-voltage coil, for described core limb and low-voltage coil lining is tight.
As preferably, described upper yoke dividing plate upper cap is established described upper yoke insulation, and described lower yoke the lower partition lid is established described lower yoke insulation.
As preferably, described novel transformer insulation system is capacity 10000kVA～40000kVA insulation system, it also comprises nail pressing support plate on folder, nail pressing, nail pressing seat, locking nut, pressing plate, supporting plate, described platen cover is located at described upper yoke insulation top, described supporting plate lid is located at described lower yoke insulation bottom, described nail pressing seat is positioned at pressing plate top, be useful on the groove that holds described nail pressing, described nail pressing is provided with described locking nut, described locking nut top is provided with nail pressing support plate on described folder, for whole insulation system is compressed.
As preferably, described pressing plate lower surface is 40mm to the insulation distance between described low-voltage coil upper surface, dwindled 20mm than existing insulation distance, described supporting plate upper surface is 45mm to the insulation distance between described low-voltage coil lower surface, dwindled 20mm than existing insulation distance, described low-voltage coil outer surface is 18mm to the insulation distance between described high-tension coil inner surface, than existing insulation distance, has dwindled 7mm.
As preferably, described novel transformer insulation system is capacity 8000kVA and following insulation system, and it also comprises upper yoke and lower yoke, and described upper yoke lid is located at described upper yoke insulation top, and described lower yoke lid is located at described lower yoke insulation bottom.
As preferably, described upper yoke lower surface is 45mm to the insulation distance between described low-voltage coil upper surface, dwindled 20mm than existing insulation distance, described lower yoke upper surface is 45mm to the insulation distance between described low-voltage coil lower surface, dwindled 20mm than existing insulation distance, described low-voltage coil outer surface is 18mm to the insulation distance between described high-tension coil inner surface, than existing insulation distance, has dwindled 7mm.
Compared with prior art, beneficial effect is as follows in the present invention: the present invention has dwindled the main insulating structure of power transformer product inside, and small product size is reduced, and cost, improved the market competitiveness; At high-tension coil upper and lower end parts difference add-on type distinguish square ring, both increase the creepage distance of high-tension coil end insulation simultaneously, also improved the Electric Field Distribution of end winding simultaneously.This novel insulation system, significantly reduce the volume of power transformer product, and main material cost obviously descends.
The accompanying drawing explanation
Fig. 1 is the first execution mode structure chart of the present invention;
Fig. 2 is the second execution mode structure chart of the present invention;
Fig. 3 is moulding distinguish square ring front view of the present invention;
Fig. 4 is moulding distinguish square ring side elevation in partial section of the present invention;
Fig. 5 is high-tension coil stay front view of the present invention;
Fig. 6 is high-tension coil stay end view of the present invention;
Fig. 7 is high-tension coil stay vertical view of the present invention;
Fig. 8 is high-tension coil of the present invention, stay, moulding distinguish square ring position relationship structure chart;
Wherein, in Fig. 1-2,1: the upper yoke insulation; 2: upper moulding distinguish square ring; 3: the upper yoke dividing plate; 4: upper high-voltage coil end insulation; 5: phase partition; 6: lower high-voltage coil end insulation; 7: the lower yoke dividing plate; 8: upper low-voltage coil end insulation; 9: fagging; 10: insulating cylinder; 11: lower low-voltage coil end insulation; 12: the iron core column outline; 13: the lower yoke insulation; 14: cardboard between high-voltage coil and low-voltage coil; 15: compacted under distinguish square ring; 16: nail pressing support plate on folder; 17: nail pressing; 18: the nail pressing seat; 19: locking nut; 20: pressing plate; 21: supporting plate; 22: upper yoke; 23: lower yoke; 24: stay; A: low-voltage coil; B: high-tension coil.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
A kind of novel transformer insulation system, it comprises iron core column, the upper yoke insulation, the lower yoke insulation, the upper yoke dividing plate, the lower yoke dividing plate, upper high-voltage coil end insulation, lower high-voltage coil end insulation, upper low-voltage coil end insulation, lower low-voltage coil end insulation, phase partition, fagging, insulating cylinder, cardboard between high-voltage coil and low-voltage coil, stay, low-voltage coil and high-tension coil, described novel transformer insulation system also comprises moulding distinguish square ring, compacted under distinguish square ring, described low-voltage coil is set in the iron core column outside, described high-tension coil is set in described low-voltage coil outside,
Between the stay of the vertical component of described upper moulding distinguish square ring and compacted under distinguish square ring on cardboard between the high-voltage coil and low-voltage coil of described low-voltage coil outside and described high-tension coil internal diameter, the upper and lower two ends of described stay have the depression of the vertical component of receiving described upper moulding distinguish square ring and compacted under distinguish square ring
Described upper moulding distinguish square ring and horizontal component between the upper high-voltage coil end insulation on described high-tension coil top and described upper yoke dividing plate, described compacted under distinguish square ring and horizontal component the lower high-voltage coil end of described high-tension coil bottom insulate and described lower yoke dividing plate between.
Further, as shown in Figure 3,4, described upper moulding distinguish square ring and compacted under distinguish square ring are spliced by a plurality of distinguish, and each distinguish is divided into and two-layerly mutually staggers in lap-joint, half that the quantity of distinguish is described stay, and the thickness of every layer is 1mm.
Further, between described iron core column and described low-voltage coil, also be provided with described fagging and insulating cylinder, for described core limb and low-voltage coil lining is tight.
Further, described upper yoke dividing plate upper cap is established described upper yoke insulation, and described lower yoke the lower partition lid is established described lower yoke insulation.
As shown in Figure 1, described novel transformer insulation system is capacity 10000kVA～40000kVA insulation system, it also comprises nail pressing support plate on folder, nail pressing, nail pressing seat, locking nut, pressing plate, supporting plate, described platen cover is located at described upper yoke insulation top, described supporting plate lid is located at described lower yoke insulation bottom, described nail pressing seat is positioned at pressing plate top, be useful on the groove that holds described nail pressing, described nail pressing is provided with described locking nut, described locking nut top is provided with nail pressing support plate on described folder, for whole insulation system is compressed.
Further, described pressing plate lower surface is 40mm to the insulation distance between described low-voltage coil upper surface, dwindled 20mm than existing insulation distance, described supporting plate upper surface is 45mm to the insulation distance between described low-voltage coil lower surface, dwindled 20mm than existing insulation distance, described low-voltage coil outer surface is 18mm to the insulation distance between described high-tension coil inner surface, than existing insulation distance, has dwindled 7mm.
The forming process of insulation system is: high-voltage coil and low-voltage coil first on coil winding machine respectively coiling complete.First in the lower yoke position, put supporting plate, then put core insulation, after low-voltage coil is enclosed within to core limb outside, then place cardboard in the low-voltage coil outside, then under high-tension coil, iron yoke dividing plate is put at position, then puts the moulding distinguish square ring in scheme of the invention, then puts high-tension coil, after insert the moulding distinguish square ring in scheme of the invention in the high-tension coil upper end, then put core insulation.Next tight core limb and low-voltage coil lining with fagging, and then put the annexes such as pressing plate, nail pressing seat and nail pressing, and whole device body is compressed.
As shown in Figure 2, described novel transformer insulation system is capacity capacity 8000kVA and following insulation system, and it also comprises upper yoke and lower yoke, and described upper yoke lid is located at described upper yoke insulation top, and described lower yoke lid is located at described lower yoke insulation bottom.
Further, described upper yoke lower surface is 45mm to the insulation distance between described low-voltage coil upper surface, dwindled 20mm than existing insulation distance, described lower yoke upper surface is 45mm to the insulation distance between described low-voltage coil lower surface, dwindled 20mm than existing insulation distance, described low-voltage coil outer surface is 18mm to the insulation distance between described high-tension coil inner surface, than existing insulation distance, has dwindled 7mm.
The forming process of insulation system is: high-voltage coil and low-voltage coil first on coil winding machine respectively coiling complete.First in the lower yoke position, put core insulation, after low-voltage coil is enclosed within to core limb outside, then place cardboard in the low-voltage coil outside, then under high-tension coil, iron yoke dividing plate is put at position, put again the moulding distinguish square ring in scheme of the invention, then put high-tension coil, after insert the moulding distinguish square ring in scheme of the invention in the high-tension coil upper end, then put core insulation.Next tight core limb and low-voltage coil lining with fagging, plug upper yoke.
The above execution mode has only been expressed one embodiment of the present invention, but can not therefore be interpreted as limitation of the scope of the invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (8)
1. a novel transformer insulation system, it comprises iron core column, the upper yoke insulation, the lower yoke insulation, the upper yoke dividing plate, the lower yoke dividing plate, upper high-voltage coil end insulation, lower high-voltage coil end insulation, upper low-voltage coil end insulation, lower low-voltage coil end insulation, phase partition, fagging, insulating cylinder, cardboard between high-voltage coil and low-voltage coil, stay, low-voltage coil and high-tension coil, it is characterized in that: described novel transformer insulation system also comprises moulding distinguish square ring, compacted under distinguish square ring, described low-voltage coil is set in the iron core column outside, described high-tension coil is set in described low-voltage coil outside,
Between the stay of the vertical component of described upper moulding distinguish square ring and compacted under distinguish square ring on cardboard between the high-voltage coil and low-voltage coil of described low-voltage coil outside and described high-tension coil internal diameter, the upper and lower two ends of described stay have the depression of the vertical component of receiving described upper moulding distinguish square ring and compacted under distinguish square ring
Described upper moulding distinguish square ring and horizontal component between the upper high-voltage coil end insulation on described high-tension coil top and described upper yoke dividing plate, described compacted under distinguish square ring and horizontal component the lower high-voltage coil end of described high-tension coil bottom insulate and described lower yoke dividing plate between.
2. a kind of novel transformer insulation system according to claim 1, it is characterized in that: described upper moulding distinguish square ring and compacted under distinguish square ring are spliced by a plurality of distinguish, each distinguish is divided into and two-layerly mutually staggers in lap-joint, the thickness of every layer is 1mm, and the quantity of distinguish is half of described stay quantity.
3. a kind of novel transformer insulation system according to claim 1, is characterized in that: also be provided with described fagging and insulating cylinder between described iron core column and described low-voltage coil, for described core limb and low-voltage coil lining is tight.
4. a kind of novel transformer insulation system according to claim 1 is characterized in that: described upper yoke dividing plate upper cap is established described upper yoke insulation, and described lower yoke the lower partition lid is established described lower yoke insulation.
5. according to the described a kind of novel transformer insulation system of claim 1-4 any one, it is characterized in that: described novel transformer insulation system is capacity 10000kVA～40000kVA insulation system, it also comprises nail pressing support plate on folder, nail pressing, the nail pressing seat, locking nut, pressing plate, supporting plate, described platen cover is located at described upper yoke insulation top, described supporting plate lid is located at described lower yoke insulation bottom, described nail pressing seat is positioned at pressing plate top, be useful on the groove that holds described nail pressing, described nail pressing is provided with described locking nut, described locking nut top is provided with nail pressing support plate on described folder, for whole insulation system is compressed.
6. a kind of novel transformer insulation system according to claim 5, it is characterized in that: described pressing plate lower surface is 40mm to the insulation distance between described low-voltage coil upper surface, dwindled 20mm than existing insulation distance, described supporting plate upper surface is 45mm to the insulation distance between described low-voltage coil lower surface, dwindled 20mm than existing insulation distance, described low-voltage coil outer surface is 18mm to the insulation distance between described high-tension coil inner surface, than existing insulation distance, has dwindled 7mm.
7. according to the described a kind of novel transformer insulation system of claim 1-4 any one, it is characterized in that: described novel transformer insulation system is capacity 8000kVA and following insulation system, it also comprises upper yoke and lower yoke, described upper yoke lid is located at described upper yoke insulation top, and described lower yoke lid is located at described lower yoke insulation bottom.
8. a kind of novel transformer insulation system according to claim 7, it is characterized in that: described upper yoke lower surface is 45mm to the insulation distance between described low-voltage coil upper surface, dwindled 20mm than existing insulation distance, described lower yoke upper surface is 45mm to the insulation distance between described low-voltage coil lower surface, dwindled 20mm than existing insulation distance, described low-voltage coil outer surface is 18mm to the insulation distance between described high-tension coil inner surface, than existing insulation distance, has dwindled 7mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310442797.6A CN103489597B (en) | 2013-09-25 | 2013-09-25 | A kind of Novel transformer insulation structure |
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| CN201310442797.6A CN103489597B (en) | 2013-09-25 | 2013-09-25 | A kind of Novel transformer insulation structure |
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| CN103489597B CN103489597B (en) | 2017-01-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680871A (en) * | 2013-12-30 | 2014-03-26 | 国能子金电器(苏州)有限公司 | Transformer body insulation structure |
| CN108010689A (en) * | 2018-02-05 | 2018-05-08 | 国网河南省电力公司新乡供电公司 | A kind of dry-type transformer |
| CN109300672A (en) * | 2018-10-19 | 2019-02-01 | 江西特种变压器厂 | A kind of the iron yoke barrier insulation structure and its installation method of dry-type transformer |
| CN109585130A (en) * | 2019-01-07 | 2019-04-05 | 江西亚珀电气有限公司 | A kind of high voltage potential transformer |
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| CN202816595U (en) * | 2012-07-24 | 2013-03-20 | 江苏天翔变压器有限公司 | High-insulation transformer |
| CN103035383A (en) * | 2012-11-23 | 2013-04-10 | 特变电工沈阳变压器集团有限公司 | Upper end insulation compressing structure of side outlet transformer voltage regulating coil |
| CN203456257U (en) * | 2013-09-25 | 2014-02-26 | 三变科技股份有限公司 | Novel transformer insulation structure |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202352490U (en) * | 2011-11-18 | 2012-07-25 | 卧龙电气烟台东源变压器有限公司 | Protecting and insulating angled ring suitable for high-voltage coil lead head |
| CN202816595U (en) * | 2012-07-24 | 2013-03-20 | 江苏天翔变压器有限公司 | High-insulation transformer |
| CN103035383A (en) * | 2012-11-23 | 2013-04-10 | 特变电工沈阳变压器集团有限公司 | Upper end insulation compressing structure of side outlet transformer voltage regulating coil |
| CN203456257U (en) * | 2013-09-25 | 2014-02-26 | 三变科技股份有限公司 | Novel transformer insulation structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680871A (en) * | 2013-12-30 | 2014-03-26 | 国能子金电器(苏州)有限公司 | Transformer body insulation structure |
| CN108010689A (en) * | 2018-02-05 | 2018-05-08 | 国网河南省电力公司新乡供电公司 | A kind of dry-type transformer |
| CN109300672A (en) * | 2018-10-19 | 2019-02-01 | 江西特种变压器厂 | A kind of the iron yoke barrier insulation structure and its installation method of dry-type transformer |
| CN109300672B (en) * | 2018-10-19 | 2023-09-19 | 江西赣电电气有限公司 | Iron yoke partition plate insulation structure of dry-type transformer and installation method thereof |
| CN109585130A (en) * | 2019-01-07 | 2019-04-05 | 江西亚珀电气有限公司 | A kind of high voltage potential transformer |
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| Publication number | Publication date |
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| CN103489597B (en) | 2017-01-04 |
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