CN204066991U - Power transformer disc coil new construction - Google Patents
Power transformer disc coil new construction Download PDFInfo
- Publication number
- CN204066991U CN204066991U CN201420489721.9U CN201420489721U CN204066991U CN 204066991 U CN204066991 U CN 204066991U CN 201420489721 U CN201420489721 U CN 201420489721U CN 204066991 U CN204066991 U CN 204066991U
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- CN
- China
- Prior art keywords
- stay
- cushion block
- cardboard cylinder
- coil
- disc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010276 construction Methods 0.000 title claims abstract description 10
- 238000007493 shaping process Methods 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012797 qualification Methods 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Insulating Of Coils (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
Power transformer disc coil new construction of the present utility model, it is characterized in that: adopt shaping cardboard cylinder and be uniformly arranged and fixed at several stays of the outer circumference surface of shaping cardboard cylinder, the length direction of stay is consistent with the length direction of shaping cardboard cylinder, form circular coil skeleton, each stay is evenly provided with several cushion blocks along its length, the height of the cushion block of all stays is consistent, stay is wound with a disc coil around shaping cardboard cylinder between upper and lower two-layer cushion block, separate with cushion block between adjacent two pieces of disc coils, the interior pad insulation strip of a circle 1mm thickness is accompanied between stay and each disc coil.The beneficial effects of the utility model are: increase the creepage distance between two line cakes, stopped electric discharge phenomena between cake; Reduce partial discharge phenomenon, effectively improve the quality of transformer; Improve the dielectric strength of transformer, improve the disposable qualification rate of product, effectively raise production efficiency.
Description
Technical field
The utility model belongs to power transformer, relates to a kind of power transformer disc coil new construction.
Background technology
Present stage, the coil of 220kV high voltage transformer has following shortcoming:
1. traditional structure dielectric strength is poor, and the creepage distance between two line cakes (line cake is disc coil) is less, easily produces electric discharge phenomena between cake;
2. wire is placed directly on stay, often occurs that stay racks wire insulation;
3. easily discharge between coil, affect the quality of transformer, efficiency is low.
Summary of the invention
The utility model, in order to make up the deficiencies in the prior art, provides a kind of power transformer disc coil new construction.
The utility model is achieved by the following technical solution:
Power transformer disc coil new construction of the present utility model, it is characterized in that: adopt shaping cardboard cylinder and be uniformly arranged and fixed at several stays of the outer circumference surface of shaping cardboard cylinder, the length direction of stay is consistent with the length direction of shaping cardboard cylinder, form circular coil skeleton, each stay is evenly provided with several cushion blocks along its length, the height of the cushion block of all stays is consistent, stay is wound with a disc coil around shaping cardboard cylinder between upper and lower two-layer cushion block, separate with cushion block between adjacent two pieces of disc coils, the interior pad insulation strip of a circle 1mm thickness is accompanied between stay and each disc coil.
Stay cross section is T-shaped, and cushion block is provided with the T-slot corresponding with stay, and cushion block is enclosed within stay by T-slot.
The beneficial effects of the utility model are:
1. increase the creepage distance between two line cakes, stop electric discharge phenomena between cake;
2. reduce partial discharge phenomenon, effectively improve the quality of transformer;
3. improve the dielectric strength of transformer, improve the disposable qualification rate of product, effectively raise production efficiency, be mainly used in the coil of 220kV transformer.
Accompanying drawing explanation
Fig. 1 is traditional structure schematic diagram.
Fig. 2 is general arrangement schematic of the present invention.
Fig. 3 is stay and cushion block enlarged diagram.
In figure, 1, shaping cardboard cylinder, 2, stay, 3, cushion block, 4, disc coil, pad insulation strip in 5.
Embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.
Power transformer disc coil new construction of the present utility model, adopt shaping cardboard cylinder 1 and be uniformly arranged and fixed at several stays 2 of the outer circumference surface of shaping cardboard cylinder, the length direction of stay is consistent with the length direction of shaping cardboard cylinder, form circular coil skeleton, each stay is evenly provided with several cushion blocks 3 along its length, the height of the cushion block of all stays is consistent, stay is wound with a disc coil 4 around shaping cardboard cylinder between upper and lower two-layer cushion block, separate with cushion block 3 between adjacent two pieces of disc coils, the interior pad insulation strip 5 of a circle 1mm thickness is accompanied between stay and each disc coil.
Stay cross section is T-shaped, and cushion block is provided with the T-slot corresponding with stay, and cushion block is enclosed within stay by T-slot.
Manufacturing process is as follows: be arranged on by shaping cardboard cylinder and touch on tool, then stay is distributed on shaping cardboard cylinder and is glued, form circular coil skeleton, then add on stay 2 and in 1mm, pad insulation strip 5 start around wire again, each cake wire cushion block 3 separates.Add pad insulation strip in 1mm inside each line cake, wire can not directly be contacted with stay.After a complete line cake, each stay overlaps a cushion block, on stay, be then wound around pad insulation strip in a circle, coiling second disc coil.
Traditional structure be by wire directly on stay around (Fig. 1), stay directly contacts with wire, creepage distance between two line cakes is less, and new construction winding is on stay, pad the coiling again of 1mm insulation strip, so just significantly increases the creepage distance between two line cakes.
Contrasted from Fig. 1 and Fig. 2; the coiling of new disc coil is different from traditional crossover coil winding structural manufacturing process; but crossover coil winding technique is also uncomplicated; do not need proprietary spooling equipment; owing to both increasing interior pad insulation strip inside each line cake when coiling, so namely improve the dielectric strength of transformer, effectively protect again the insulation of wire; the quality of transformer is ensured, the winding efficiency made is improved.
1, add under all when coiling line cakes in the thick insulation of 1mm and pad, the creepage distance be different between existing winding structure line cake is short, the coil of coiling by this method, namely adds the creepage distance between line cake, substantially increases again the dielectric strength between coil and coil; 2, the coil of this structure effectively protects the insulation of wire; be different from existing structure and often occur that stay racks wire insulation; this structure can greatly reducing the electric discharge of coil; greatly improve the quality of transformer; the office effectively reducing transformer puts; need not task equipment be added, improve the versatility of equipment application and improve production efficiency.
Claims (2)
1. a power transformer disc coil new construction, it is characterized in that: adopt shaping cardboard cylinder and be uniformly arranged and fixed at several stays of the outer circumference surface of shaping cardboard cylinder, the length direction of stay is consistent with the length direction of shaping cardboard cylinder, form circular coil skeleton, each stay is evenly provided with several cushion blocks along its length, the height of the cushion block of all stays is consistent, stay is wound with a disc coil around shaping cardboard cylinder between upper and lower two-layer cushion block, separate with cushion block between adjacent two pieces of disc coils, the interior pad insulation strip of a circle 1mm thickness is accompanied between stay and each disc coil.
2. power transformer disc coil new construction according to claim 1, it is characterized in that: stay cross section is T-shaped, cushion block is provided with the T-slot corresponding with stay, and cushion block is enclosed within stay by T-slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420489721.9U CN204066991U (en) | 2014-08-28 | 2014-08-28 | Power transformer disc coil new construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420489721.9U CN204066991U (en) | 2014-08-28 | 2014-08-28 | Power transformer disc coil new construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204066991U true CN204066991U (en) | 2014-12-31 |
Family
ID=52208448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420489721.9U Expired - Fee Related CN204066991U (en) | 2014-08-28 | 2014-08-28 | Power transformer disc coil new construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204066991U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632724A (en) * | 2016-03-29 | 2016-06-01 | 常州东芝舒电变压器有限公司 | Insulation structure between axially distributed coils |
| CN105810413A (en) * | 2016-06-09 | 2016-07-27 | 苏州高精特专信息科技有限公司 | Dry type transformer |
| CN105826054A (en) * | 2016-06-09 | 2016-08-03 | 苏州高精特专信息科技有限公司 | Dry type transformer for electricity |
| CN110047650A (en) * | 2019-05-23 | 2019-07-23 | 重庆源通电器设备制造有限责任公司 | A kind of safeguard structure of transformer coil and preparation method thereof |
| CN111105928A (en) * | 2020-01-07 | 2020-05-05 | 卧龙电气驱动集团股份有限公司 | A wire changer suitable for continuous coil reverse-segment winding and its winding method |
| CN112834148A (en) * | 2021-03-11 | 2021-05-25 | 云南电网有限责任公司电力科学研究院 | A winding model for axial and radial vibration testing |
| CN113968094A (en) * | 2021-09-10 | 2022-01-25 | 保定天威集团特变电气有限公司 | Circumference equal dividing method for insulating hard paper tube |
| CN114141501A (en) * | 2021-11-23 | 2022-03-04 | 保定天威集团特变电气有限公司 | Coil insulation device, transformer and winding method of coil |
| CN115101332A (en) * | 2022-08-04 | 2022-09-23 | 西比里电机技术(苏州)有限公司 | Device for preparing cake-type winding of transformer by ceramic aluminum conductor |
-
2014
- 2014-08-28 CN CN201420489721.9U patent/CN204066991U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632724A (en) * | 2016-03-29 | 2016-06-01 | 常州东芝舒电变压器有限公司 | Insulation structure between axially distributed coils |
| CN105810413A (en) * | 2016-06-09 | 2016-07-27 | 苏州高精特专信息科技有限公司 | Dry type transformer |
| CN105826054A (en) * | 2016-06-09 | 2016-08-03 | 苏州高精特专信息科技有限公司 | Dry type transformer for electricity |
| CN110047650A (en) * | 2019-05-23 | 2019-07-23 | 重庆源通电器设备制造有限责任公司 | A kind of safeguard structure of transformer coil and preparation method thereof |
| CN111105928A (en) * | 2020-01-07 | 2020-05-05 | 卧龙电气驱动集团股份有限公司 | A wire changer suitable for continuous coil reverse-segment winding and its winding method |
| CN112834148A (en) * | 2021-03-11 | 2021-05-25 | 云南电网有限责任公司电力科学研究院 | A winding model for axial and radial vibration testing |
| CN113968094A (en) * | 2021-09-10 | 2022-01-25 | 保定天威集团特变电气有限公司 | Circumference equal dividing method for insulating hard paper tube |
| CN114141501A (en) * | 2021-11-23 | 2022-03-04 | 保定天威集团特变电气有限公司 | Coil insulation device, transformer and winding method of coil |
| CN115101332A (en) * | 2022-08-04 | 2022-09-23 | 西比里电机技术(苏州)有限公司 | Device for preparing cake-type winding of transformer by ceramic aluminum conductor |
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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: 20141231 Termination date: 20200828 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |