CN201274227Y - Insulation apparatus for 20kV dry transformer - Google Patents
Insulation apparatus for 20kV dry transformer Download PDFInfo
- Publication number
- CN201274227Y CN201274227Y CNU2008201635469U CN200820163546U CN201274227Y CN 201274227 Y CN201274227 Y CN 201274227Y CN U2008201635469 U CNU2008201635469 U CN U2008201635469U CN 200820163546 U CN200820163546 U CN 200820163546U CN 201274227 Y CN201274227 Y CN 201274227Y
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- voltage coil
- casting body
- high voltage
- pour mass
- coil pour
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Abstract
The utility model relates to an insulating device for a 20 kv dry-type transformer, comprising a high voltage coil casting body and a low voltage coil casting body. An insulating cylinder is arranged between the high voltage coil casting body and the low voltage coil casting body; the high voltage coil casting body is provided with an insulator; an iron core is arranged at the inner side of the low voltage coil casting body; and the high voltage coil casting body and the low voltage coil casting body are fixed by an upper clamping piece and a lower clamping piece. The utility model is characterized in that a static board is arranged inside the upper end and the lower end of the high voltage coil casting body, and the top and the bottom of the high voltage coil casting body are respectively provided with an angle ring. Because the static board is arranged in the high voltage coil casting body, a static board shielding layer is arranged between a high voltage coil and a low voltage coil; suspension potential difference is reduced and electricity is discharged to the static shielding board; the direct breakdown of the high voltage coil to the low voltage coil is prevented; and the loaded signal equipment can not be burnt out. The top and the bottom thereof are respectively provided with the angle ring, which prevents discharge or breakdown accident between a high voltage pressure regulating coil and a medium voltage pressure regulating coil, and the creepage accident caused by the dust on the surface of an insulating piece can be avoided.
Description
Technical field
The utility model relates to 20 KV dry-type transformers, the seal that particularly relates to 20 KV dry-type transformers, belong to the high voltage power distribution power equipment, this device can be widely used in the power transmission and transformation system in the higher places of security requirement such as skyscraper, commercial center, airport, subway, harbour, tunnel, industrial and mining enterprises, and emerging regional load density is relatively weaker than higher or existing electrical network basis, no longer utilize the 20KV level electric network reconstruction in the area that existing electrical network and rural area load density relatively disperse.
Background technology
The development practice of power distribution network shows, advantages such as urban power distribution network adopts 20 kilovolts of medium-voltage distributions to have to save and invest, saves the area, energy savings, minimizing corridor not only can significantly improve power supply capacity, reduction via net loss, also have the remarkable environmental benefit.Adapting to large and medium-sized enterprise, market need for electricity, the aspect has obvious superiority to meet the distant view development and save the area etc., is that 20 kilovolts technological transformation also is feasible and carry out that existing 10 KV distribution facilities boost.And the rising of electric pressure, also just mean raising to controller switching equipment insulation and other every performance requirements, existing 10 kilovolts of level distribution facilities can not satisfy the every performance requirement under 20 kilovolts of level field intensity, need adjust improvement accordingly to transformer existing structure and production technology.
Summary of the invention
The purpose of this utility model is to pass through the improvement of product structure and the utilization of new material in order to provide a kind of, paid attention to insulation property design, its anti-noise and raising anti-short circuit capability especially, product has the seal of 20 KV dry-type transformers of advantages such as volume is little, material province, good looking appearance, loss is low, noise is low, anti-short circuit capability is strong.
The technical scheme of the seal of the utility model 20 KV dry-type transformers is: comprise high-tension coil pour mass and low-voltage coil pour mass, mounting insulation tube between high-tension coil pour mass and low-voltage coil pour mass, the high-tension coil pour mass has insulator, at low-voltage coil pour mass installed inside iron core, high and low pressure coil pour mass is fixed by upper and lower folder, it is characterized in that in upper and lower two of high-tension coil pour mass static board being installed, the top and bottom of high-tension coil pour mass is installed square ring separately.
The seal of 20 KV dry-type transformers of the present utility model, in upper and lower two of high-tension coil pour mass static board is installed, make and between high-tension coil and low-voltage coil, form the static board screen, thereby reduce the floating potential difference and the electrostatic screen plate is discharged, protect the direct puncture of high-tension coil, thereby avoided burning out of load signal equipment, improved the running quality of transformer low-voltage coil, prolong transformer useful life, reduce the transformer maintenance cost; Top and bottom at the high-tension coil pour mass is installed square ring separately, square ring can prevent to produce between high pressure voltage regulation coil and the middle pressure voltage regulation coil discharge or breakdown accident effectively, avoided causing the generation of creepage accident because of there is dust on the insulating part surface, effective especially to three winding 110KV power transformers.
The seal of 20 KV dry-type transformers of the present utility model, its described square ring takes the shape of the letter U, and is easy for installation.Its described insulator and high-tension coil pour mass form for the cast of epoxide resin material one, and the epoxide resin material good insulation preformance enlarges the transformer scope of application, and particularly suitable is at the wet corrosion environment.Insulator and high-tension coil pour mass are that the one cast forms, make the outlet position of high-tension coil pour mass connect insulator, satisfy long creep distance requirement, can install the connecting rod of series connection down at outlet insulator top, satisfy the requirement of high voltage creep distance in minimum space, reduced electric field strength, good insulation preformance.Its described insulating cylinder is integrated poured made, adopts integrated poured technology, characteristics such as insulating cylinder has the proof voltage height, dielectric loss is low, office is high-volume little, mechanical strength height.
Description of drawings
Fig. 1 is the seal structural representation of the utility model 20 KV dry-type transformers;
Fig. 2 is that the A of Fig. 1 is to schematic diagram;
Fig. 3 is that the B of Fig. 1 is to schematic diagram.
Embodiment
The utility model relates to the seal of 20 KV dry-type transformers, shown in Figure 3 as Fig. 1 one, comprise high-tension coil pour mass 1 and low-voltage coil pour mass 2, mounting insulation tube 9 between high-tension coil pour mass 1 and low-voltage coil pour mass 2, high-tension coil pour mass 1 has insulator 10, at low-voltage coil pour mass 2 installed inside iron cores 3, high and low pressure coil pour mass is fixed by upper and lower folder 4,5, it is characterized in that static board 11 is installed in upper and lower two of high-tension coil pour mass 1, the top and bottom of high-tension coil pour mass 1 is installed square ring 6,7 separately.Static board 11 is installed in upper and lower two of high-tension coil pour mass 1, make and between high-tension coil and low-voltage coil, form the static board screen, thereby reduce the floating potential difference and the electrostatic screen plate is discharged, the protection high-tension coil is to the direct puncture of low-voltage coil, thereby avoided burning out of load signal equipment, improve the running quality of transformer, prolonged transformer useful life, reduced the transformer maintenance cost; At the top and bottom of high-tension coil pour mass 1 square ring 6,7 is installed separately, square ring can prevent to produce between high pressure voltage regulation coil and the middle pressure voltage regulation coil discharge or breakdown accident effectively, avoided causing the generation of creepage accident because of there is dust on the insulating part surface, effective especially to three winding 110KV power transformers.Its described square ring 6,7 takes the shape of the letter U, and is easy for installation.Its described insulator 10 forms for the cast of epoxide resin material one with high-tension coil pour mass 1.The epoxide resin material good insulation preformance enlarges the transformer scope of application, and particularly suitable is at the wet corrosion environment.Insulator 10 forms for the one cast with high-tension coil pour mass 1, make the outlet position of high-tension coil pour mass connect insulator, satisfy long creep distance requirement, can install the connecting rod 12 of series connection down at outlet insulator top, satisfy the requirement of high voltage creep distance in minimum space, reduced electric field strength, good insulation preformance.Its described insulating cylinder 9 is integrated poured made, adopts integrated poured technology, characteristics such as insulating cylinder has the proof voltage height, dielectric loss is low, office is high-volume little, mechanical strength height.
Claims (4)
1, the seal of 20 KV dry-type transformers, comprise high-tension coil pour mass (1) and low-voltage coil pour mass (2), mounting insulation tube (9) between high-tension coil pour mass (1) and low-voltage coil pour mass (2), high-tension coil pour mass (1) has insulator (10), at low-voltage coil pour mass (2) installed inside iron core (3), high, the low-voltage coil pour mass is by last, lower clamping piece (4,5) fix, it is characterized in that high-tension coil pour mass (1) on, static board (11) is installed in following two, and the top and bottom of high-tension coil pour mass (1) is installed square ring (6 separately, 7).
2, the seal of 20 KV dry-type transformers as claimed in claim 1 is characterized in that described square ring (6,7) takes the shape of the letter U.
3, the seal of 20 KV dry-type transformers as claimed in claim 1 is characterized in that described insulator (10) and high-tension coil pour mass (1) form for the cast of epoxide resin material one.
4, the seal of 20 KV dry-type transformers as claimed in claim 1 is characterized in that described insulating cylinder (9) is for integrated poured made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201635469U CN201274227Y (en) | 2008-08-28 | 2008-08-28 | Insulation apparatus for 20kV dry transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201635469U CN201274227Y (en) | 2008-08-28 | 2008-08-28 | Insulation apparatus for 20kV dry transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201274227Y true CN201274227Y (en) | 2009-07-15 |
Family
ID=40884570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201635469U Expired - Fee Related CN201274227Y (en) | 2008-08-28 | 2008-08-28 | Insulation apparatus for 20kV dry transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201274227Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051140A (en) * | 2014-05-27 | 2014-09-17 | 广德因达电炉成套设备有限公司 | Pouring inductor for middle frequency power supply |
| CN108831716A (en) * | 2018-08-07 | 2018-11-16 | 江苏宏源电气有限责任公司 | A kind of dry-type transformer insulation system |
-
2008
- 2008-08-28 CN CNU2008201635469U patent/CN201274227Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051140A (en) * | 2014-05-27 | 2014-09-17 | 广德因达电炉成套设备有限公司 | Pouring inductor for middle frequency power supply |
| CN108831716A (en) * | 2018-08-07 | 2018-11-16 | 江苏宏源电气有限责任公司 | A kind of dry-type transformer insulation system |
| CN108831716B (en) * | 2018-08-07 | 2019-11-22 | 江苏宏源电气有限责任公司 | A kind of dry-type transformer insulation system |
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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: 20090715 Termination date: 20170828 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |