CN201918246U - Main insulation structure of 220 KV three-phase power transformer with three coils - Google Patents
Main insulation structure of 220 KV three-phase power transformer with three coils Download PDFInfo
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- CN201918246U CN201918246U CN2010206649164U CN201020664916U CN201918246U CN 201918246 U CN201918246 U CN 201918246U CN 2010206649164 U CN2010206649164 U CN 2010206649164U CN 201020664916 U CN201020664916 U CN 201020664916U CN 201918246 U CN201918246 U CN 201918246U
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- wedge shape
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- corrugated board
- intermediate voltage
- voltage winding
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Abstract
The utility model relates to a main insulation structure of a 220 KV (Kilovolt) three-phase power transformer with three coils, which is characterized in that structures of paperboards and supporting strips are adopted on two sides of a high-voltage coil, a middle-voltage coil and a low-voltage coil, wherein structures of corrugated board and wedge-shaped supporting strips are adopted at the middle parts between the high-voltage coil and the middle-voltage coil as well as the middle-voltage coil and the low-voltage coil; and the corrugated board and wedge-shaped supporting strip structures are alternatively arranged to the paperboards. The main insulation structure provided by the utility model has the advantages that the anti-short circuit ability is strong, the electric property is good, the volume is small, the weight is light, the consumption is less, and the temperature raise is slow.
Description
Technical field
The utility model 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, the weight height, cost height, loss height.
The utility model content
The purpose of this utility model provides a kind of Main Insulation Structure of Electric of 220 kilovolts of phase three-wire three circle power transformers, and it is strong that this structure has 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 achieving the above object, the utility model 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 beneficial effects of the utility model are:
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, 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, 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 utility model 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 schematic diagram.
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, the heat radiation of assurance coil, 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 that wedge shape stay thickness c=9mm, cal(l)iper d=1.5mm, corrugated board add wedge shape stay thickness e=9mm, cal(l)iper f=1.5mm, corrugated board adds 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 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, 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 (4)
1.220 the Main Insulation Structure of Electric of kilovolt phase three-wire three circle power transformer, it is characterized in that, 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 paperboard structure of wedge shape stay structure.
2. the Main Insulation Structure of Electric of 220 kilovolts of phase three-wire three circle power transformers according to claim 1 is characterized in that, the 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.
3. the Main Insulation Structure of Electric of 220 kilovolts of phase three-wire three circle power transformers according to claim 1 is characterized in that, the 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.
4. the Main Insulation Structure of Electric of 220 kilovolts of phase three-wire three circle power transformers according to claim 1 is characterized in that, described wedge shape stay is having the square ring place to join opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206649164U CN201918246U (en) | 2010-12-17 | 2010-12-17 | Main insulation structure of 220 KV three-phase power transformer with three coils |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206649164U CN201918246U (en) | 2010-12-17 | 2010-12-17 | Main insulation structure of 220 KV three-phase power transformer with three coils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201918246U true CN201918246U (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206649164U Expired - Fee Related CN201918246U (en) | 2010-12-17 | 2010-12-17 | Main insulation structure of 220 KV three-phase power transformer with three coils |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201918246U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097203A (en) * | 2010-12-17 | 2011-06-15 | 辽宁华冶集团发展有限公司 | Main insulating structure of 220KV three-phase three-coil power transformer |
| CN106935382A (en) * | 2015-12-29 | 2017-07-07 | 保定保菱变压器有限公司 | A kind of new structure of transformer body |
| CN112002544A (en) * | 2020-07-16 | 2020-11-27 | 山东电力设备有限公司 | Design method of novel ultra-high voltage wire outlet device and wire outlet device structure |
-
2010
- 2010-12-17 CN CN2010206649164U patent/CN201918246U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097203A (en) * | 2010-12-17 | 2011-06-15 | 辽宁华冶集团发展有限公司 | Main insulating structure of 220KV three-phase three-coil power transformer |
| CN102097203B (en) * | 2010-12-17 | 2012-05-30 | 辽宁华冶集团发展有限公司 | Main insulating structure of 220KV three-phase three-coil power transformer |
| CN106935382A (en) * | 2015-12-29 | 2017-07-07 | 保定保菱变压器有限公司 | A kind of new structure of transformer body |
| CN112002544A (en) * | 2020-07-16 | 2020-11-27 | 山东电力设备有限公司 | Design method of novel ultra-high voltage wire outlet device and wire outlet device structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20131217 |