CN102097203B - Main insulating structure of 220KV three-phase three-coil power transformer - Google Patents
Main insulating structure of 220KV three-phase three-coil power transformer Download PDFInfo
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- CN102097203B CN102097203B CN2010105933346A CN201010593334A CN102097203B CN 102097203 B CN102097203 B CN 102097203B CN 2010105933346 A CN2010105933346 A CN 2010105933346A CN 201010593334 A CN201010593334 A CN 201010593334A CN 102097203 B CN102097203 B CN 102097203B
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Abstract
本发明涉及220千伏三相三线圈电力变压器的主绝缘结构，特征在于，在靠近高压线圈、中压线圈、低压线圈的两侧采用纸板加撑条的结构，在高压线圈与中压线圈、中压线圈与低压线圈之间中部采用瓦楞纸板加楔形撑条结构，瓦楞纸板加楔形撑条结构与纸板相间设置。该结构具有抗短路能力强，电气性能好，体积小，重量轻，损耗小，温升低的特点。
The present invention relates to the main insulation structure of a 220 kV three-phase three-coil power transformer. The middle part between the medium-voltage coil and the low-voltage coil adopts a structure of corrugated cardboard plus wedge-shaped stays, and the structure of corrugated cardboard plus wedge-shaped stays is arranged alternately with the cardboard. The structure has the characteristics of strong short-circuit resistance, good electrical performance, small size, light weight, small loss and low temperature rise.
Description
Technical field
The present invention relates to a kind of Main Insulation Structure of Electric of 220 kilovolts of phase three-wire three circle power transformers.
Background technology
220 kilovolts of phase three-wire three circle power transformers are widely used in power industries such as electrical network project and power supply project, are widely used in iron and steel simultaneously, petrochemical industry, the large-scale power transmission and transformation project of companies such as coal industry.The Main Insulation Structure of Electric of 220 kilovolts of traditional phase three-wire three circle power transformers adopts the presspaper small oil gap, and the middle part oil clearance is about 13mm between high-tension coil and the intermediate voltage winding, and the middle part oil clearance is about 9mm between intermediate voltage winding and the low-voltage coil; Volume of transformer is big; Weight is high, and cost is high, and loss is high.
Summary of the invention
It is strong that the Main Insulation Structure of Electric that the purpose of this invention is to provide a kind of 220 kilovolts of phase three-wire three circle power transformers, this structure have an anti-short circuit capability, good electric property, and volume is little, and is in light weight, and loss is little, the characteristics that temperature rise is low.
For realizing above-mentioned purpose, the present invention adopts following technical scheme to realize:
The Main Insulation Structure of Electric of 220 kilovolts of phase three-wire three circle power transformers; Adopting cardboard to add the structure of stay near the both sides of high-tension coil, intermediate voltage winding, low-voltage coil; The middle part adopts corrugated board to add wedge shape stay structure between high-tension coil and intermediate voltage winding, intermediate voltage winding and low-voltage coil, and corrugated board adds the alternate setting with cardboard of wedge shape stay structure.
Corrugated board thickness 1.0mm between described high-tension coil and the intermediate voltage winding, depth of convolution 9mm, pitch of waves 15mm; The head length 15mm of the wedge shape stay that matches with corrugated board between described high-tension coil and the intermediate voltage winding, the long 50mm of afterbody, wedge shape stay thickness 8.0mm.
Corrugated paper thickness of slab 1.0mm between described intermediate voltage winding and the low-voltage coil, depth of convolution 6mm, pitch of waves 15mm; The wedge shape stay head length 15mm that matches with corrugated board between described intermediate voltage winding and the low-voltage coil, the long 50mm of afterbody, wedge shape stay thickness 5.0mm.
Described wedge shape stay is having the square ring place to join opening.
Compared with prior art, the invention has the beneficial effects as follows:
1) main insulation is adopting common cardboard propping bar structure near the coil both sides, guarantees the coil heat radiation, temperature rise index, anti-short circuit capability.
2) main insulation middle part between the high, medium and low voltage coil adopts multi-wall corrugated board to add wedge shape stay structure; The middle part oil clearance is reduced to 9mm by 13mm between high-tension coil and the intermediate voltage winding, and the middle part oil clearance is reduced to 6mm by 9mm between intermediate voltage winding and the low-voltage coil, and the coil middle part adopts corrugated board to increase creep distance; Shortened main insulating structure greatly; Add the Short Circuit withstand intensity that the wedge shape stay can improve transformer, make transformer when reducing the wastage by a relatively large margin, manufacturing cost does not increase.
Structure of the present invention has that advantages of simple, anti-short circuit capability are strong, good electric property, volume is little, in light weight, loss is little, temperature rise is low characteristics.
Description of drawings
Fig. 1 is the Main Insulation Structure of Electric front view of 220 kilovolts of phase three-wire three circle power transformers;
Fig. 2 is that the Main Insulation Structure of Electric of 220 kilovolts of phase three-wire three circle power transformers is overlooked the partial structurtes sketch map.
Among the figure: 1-low-voltage coil 2-intermediate voltage winding 3-high-tension coil 4-voltage regulation coil 5-square ring 6-stay 7-cardboard 8-corrugated board 9-wedge shape stay 10-cardboard
Embodiment
See Fig. 1, Fig. 2; The Main Insulation Structure of Electric of 220 kilovolts of phase three-wire three circle power transformers, its Main Insulation Structure of Electric is adopting common cardboard 7 to add stay 6 structures near high-tension coil 3, intermediate voltage winding 2, low-voltage coil 1 both sides, guarantees the coil heat radiation; The temperature rise index; Anti-short circuit capability, the middle part adopts corrugated board 8 to add wedge shape stay 9 structures between high-tension coil 3 and intermediate voltage winding 2, intermediate voltage winding 2 and low-voltage coil 1, and corrugated board 8 adds the alternate setting with common cardboard of wedge shape stay 9 structures.Adopt corrugated board can increase creep distance, shorten main insulating structure, the wedge shape stay improves the Short Circuit withstand intensity of transformer.The wedge shape stay is having square ring 5 places to join opening.
Stay thickness a=8+1mm, cal(l)iper b=6mm, the corrugated board that a, b, c, d, e, f, g, h, m are followed successively by the built-in pad of high-tension coil adds wedge shape stay thickness c=9mm, cal(l)iper d=1.5mm, corrugated board and adds wedge shape stay thickness e=9mm, cal(l)iper f=1.5mm, corrugated board and add wedge shape stay thickness g=9mm, cal(l)iper h=3mm, stay thickness m=9mm.
Stay thickness n=7+1mm, cal(l)iper o=5mm, the corrugated board that n, o, p, q, r, s, t are followed successively by the built-in pad of intermediate voltage winding adds wedge shape stay thickness p=6mm, cal(l)iper d=1.5mm, corrugated board and adds wedge shape stay thickness r=6mm, cal(l)iper s=3mm, stay thickness t=8mm.
Corrugated paper thickness of slab 1.0mm between high-tension coil and the intermediate voltage winding, depth of convolution 9mm, pitch of waves 15mm.
Wedge shape stay head length 15mm between high-tension coil and the intermediate voltage winding, the long 50mm of afterbody, thickness 8.0mm.
Corrugated paper thickness of slab 1.0mm between intermediate voltage winding and the low-voltage coil, depth of convolution 6mm, pitch of waves 15mm
Wedge shape stay head length 15mm between intermediate voltage winding and the low-voltage coil, the long 50mm of afterbody, thickness 5.0mm.
See Fig. 1, main insulation middle part between the high, medium and low voltage coil adopts multi-wall corrugated board to add wedge shape stay structure, and the middle part oil clearance is reduced to 9mm by 13mm between high-tension coil and the intermediate voltage winding; The middle part oil clearance is reduced to 6mm by 9mm between intermediate voltage winding and the low-voltage coil; The coil middle part adopts corrugated board to increase creep distance, has shortened main insulating structure greatly, adds the Short Circuit withstand intensity that the wedge shape stay can improve transformer; Make transformer when reducing the wastage by a relatively large margin, manufacturing cost does not increase.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105933346A CN102097203B (en) | 2010-12-17 | 2010-12-17 | Main insulating structure of 220KV three-phase three-coil power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105933346A CN102097203B (en) | 2010-12-17 | 2010-12-17 | Main insulating structure of 220KV three-phase three-coil power transformer |
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| Publication Number | Publication Date |
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| CN102097203A CN102097203A (en) | 2011-06-15 |
| CN102097203B true CN102097203B (en) | 2012-05-30 |
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| CN2010105933346A Active CN102097203B (en) | 2010-12-17 | 2010-12-17 | Main insulating structure of 220KV three-phase three-coil power transformer |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2845207T3 (en) * | 2017-05-31 | 2021-07-26 | Abb Power Grids Switzerland Ag | Isolation transformers |
| CN111210979B (en) * | 2018-11-22 | 2022-12-23 | 特变电工沈阳变压器集团有限公司 | Transformer device connection structure that is qualified for next round of competitions |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201060733Y (en) * | 2007-06-19 | 2008-05-14 | 上海南桥变压器有限责任公司 | Device structure of enhanced anti-outburst short-circuit capacity transformer |
| US7495539B2 (en) * | 2006-10-02 | 2009-02-24 | General Electric Company | Filament transformer for X-ray tubes |
| CN201332002Y (en) * | 2009-01-16 | 2009-10-21 | 成都市温江区华蜀电器有限责任公司 | Dual-oil duct coil of transformer |
| CN201918246U (en) * | 2010-12-17 | 2011-08-03 | 辽宁华冶集团发展有限公司 | Main insulation structure of 220 KV three-phase power transformer with three coils |
-
2010
- 2010-12-17 CN CN2010105933346A patent/CN102097203B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7495539B2 (en) * | 2006-10-02 | 2009-02-24 | General Electric Company | Filament transformer for X-ray tubes |
| CN201060733Y (en) * | 2007-06-19 | 2008-05-14 | 上海南桥变压器有限责任公司 | Device structure of enhanced anti-outburst short-circuit capacity transformer |
| CN201332002Y (en) * | 2009-01-16 | 2009-10-21 | 成都市温江区华蜀电器有限责任公司 | Dual-oil duct coil of transformer |
| CN201918246U (en) * | 2010-12-17 | 2011-08-03 | 辽宁华冶集团发展有限公司 | Main insulation structure of 220 KV three-phase power transformer with three coils |
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Owner name: ANSHAN POWER SUPPLY COMPANY, STATE GRID LIAONING E Effective date: 20140321 |
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Inventor after: Li Zhen Inventor after: Zhang Bingjie Inventor after: Hu Shaogang Inventor after: Liu Jun Inventor after: Liu Yunxuan Inventor before: Li Zhen Inventor before: Zhang Bingjie |
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Free format text: CORRECT: INVENTOR; FROM: LI ZHEN ZHANG BINGJIE TO: LI ZHEN ZHANG BINGJIE HU SHAOGANG LIU JUN LIU YUNXUAN |
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Effective date of registration: 20140321 Address after: 114044 Anshan province hi tech Zone, thousands of mountain road, No. 388, No. Patentee after: Liaoning Huaye Group Development Co., Ltd. Patentee after: Anshan Power Supply Company, State Grid Liaoning Electric Power Co., Ltd. Patentee after: State Grid Corporation of China Address before: 114044 Anshan province hi tech Zone, thousands of mountain road, No. 388, No. Patentee before: Liaoning Huaye Group Development Co., Ltd. |