CN2927285Y - Ceramic-casing super-voltage sulfur-hexafluoride gas isolated current mutual inductor - Google Patents
Ceramic-casing super-voltage sulfur-hexafluoride gas isolated current mutual inductor Download PDFInfo
- Publication number
- CN2927285Y CN2927285Y CN 200620051746 CN200620051746U CN2927285Y CN 2927285 Y CN2927285 Y CN 2927285Y CN 200620051746 CN200620051746 CN 200620051746 CN 200620051746 U CN200620051746 U CN 200620051746U CN 2927285 Y CN2927285 Y CN 2927285Y
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- Prior art keywords
- insulator
- shielding cylinder
- porcelain bushing
- flange
- current transformer
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Abstract
The utility model relates to a porcelain bushing type extra high-voltage SF6 gas insulated current transformer, which comprises a case, a primary conductor, a primary wire plate, a secondary iron core coil, a secondary shield, a support insulator, a flange, a porcelain bushing, a uniform voltage shield drum, a uniform voltage lead rod, a pedestal, a density relay, a secondary junction box charge and exhaust valve and an equalizing ring, the porcelain bushing is designed as a two-stage porcelain bushing structure, which is the structure that the porcelain bushing is divided into an upper porcelain bushing and a lower porcelain bushing, a middle shield support flange is arranged at the joint of the two porcelain bushings, the flange is provided with an equalizing ring (19); the porcelain bushing divided into two poles through the current transformer, which overcomes weakness of epoxy glass steel compound bushing and facilitates production of porcelain bushing. A middle shield drum is fixed on the flange plate of the upper and lower porcelain bushing joint, which increases reliability of insulation structure. The porcelain bushing has good rigidity, avoids offset of electrode position. Since shield drum is connected with outside, uniform voltage effect of uniform voltage shield drum can be tested conveniently.
Description
Technical field
The utility model relates to a kind of 500kV level sulfur hexafluoride gas-insulating current transformer; It is applicable to 500kV level power transmission and transformation system, makes electric current electric energy measurement and protection control usefulness.
Background technology
At present, there is following shortcoming in 500kV level SF6 (sulphur hexafluoride) gas insulated high voltage current transformer of being produced: one, adopt fiber glass epoxy and silicon rubber composite monolithic sleeve pipe, the shortcoming of this sleeve pipe be easily wear out, easily by birdseed.And the working condition of whole insulator existing market is difficult to satisfy, even if produce, but price also will be very expensive.Its two, the middle shielding cylinder of all pressing is supported by the epoxy glass fiber reinforced plastic cylinder of interior dress.In dress fiber glass epoxy support tube or outer epoxy fiberglass composite bushing in the horizontal direction with base plate inclination 1mm, about the centre all presses shielding cylinder top with deflection 10mm, this situation all might take place when product manufacturing transportation and installation, has a strong impact on the product safety operation.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned defective, provide a kind of employing two-stage insulator structure, centre all to press the shielding cylinder position to be difficult for skew, all press shielding cylinder all to press the porcelain bushing type superhigh pressure sulfur hexafluoride gas-insulating current transformer of effect in the middle of can conveniently testing.
The technical solution of the utility model: a kind of porcelain bushing type superhigh pressure sulfur hexafluoride gas-insulating current transformer, it comprises housing 1, Primary Conductor 2, primary connection plate 3, secondary iron-core coil 4, secondary shield body 5, supporting insulator 6, flange 7, last insulator 8, following insulator 17, all press shielding cylinder 9, middle upper portion is all pressed shielding cylinder 10, middle lower portion is all pressed shielding cylinder 11, equal voltage lead wires bar 12, base 13, density monitor 14, secondary connection box 15, Air filling and discharging valves 16, it is characterized in that insulator is designed to two-stage insulator structure, be that insulator is divided into insulator and following insulator two parts, the junction between its two insulator is provided with an intershield pivot flange 18; All pressing shielding cylinder to be divided into outward in the insulator all presses shielding cylinder and centre all to press shielding cylinder, all pressing shielding cylinder to be designed to middle upper portion in the middle of it all presses shielding cylinder and middle lower portion all to press shielding cylinder, all pressing shielding cylinder in the middle of two is to be fixed on the intershield tube pivot flange of upper and lower insulator junction, and high pressure all presses shielding cylinder to be arranged on the insulator top.Base is provided with equal voltage lead wires bar.Base is provided with density monitor, secondary connection box and Air filling and discharging valves.
Grading ring (19) is set on the intershield pivot flange (18); Middle upper portion all presses shielding cylinder (10), middle lower portion all to press integrally-built all the press shielding cylinder of shielding cylinder (11) for uniting two into one.
The utility model compared with prior art has following characteristics: (1), insulator is divided into the two poles of the earth has not only overcome the weakness of expoxy glass steel sleeve but also has made the manufacturing of insulator simple and convenient.(2), middle all press shielding cylinder to be fixed on the flanged plate of upper and lower insulator junction, greatly reduced all to press the shielding cylinder upper position to depart from because of product manufacturing, transportation, the improper centre of causing of installation, improved the reliability of insulation system.(3), the insulator rigidity is good, avoided all pressing the shielding cylinder offset because of external force (high-voltage conducting wires pulling force) or solar radiation, the distortion of fiber glass epoxy casing buckling brings when droping to the ground transportation centre, causes the decline of insulation level.(4), owing to three all press shielding cylinder all to have to be connected with the outside, can test all pressures effect of all pressing shielding cylinder easily, and can be according to different setting height(from bottom)s, suitably finely tune equalizing capacitance with grading ring, improve the reliability that product uses in different occasions, also can be used for monitoring simultaneously each centre and all press shielding cylinder to have or not gross distortion or displacement in transit.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
Referring to accompanying drawing: a kind of porcelain bushing type superhigh pressure sulfur hexafluoride gas-insulating current transformer, it comprises housing 1, Primary Conductor 2, primary connection plate 3, secondary iron-core coil 4, secondary shield body 5, supporting insulator 6, flange 7, last insulator 8, following insulator 17, all press shielding cylinder 9, middle upper portion is all pressed shielding cylinder 10, middle lower portion is all pressed shielding cylinder 11, equal voltage lead wires bar 12, base 13, density monitor 14, secondary connection box 15, Air filling and discharging valves 16, grading ring 19, it is characterized in that: insulator is designed to two-stage insulator structure, be that insulator is divided into insulator 8 and following insulator 17 two parts, the junction of its two insulator is provided with an intershield pivot flange 18, and flange 18 is provided with grading ring 19;
All pressing shielding cylinder to be divided into outward in the insulator all presses shielding cylinder 9 and centre all to press shielding cylinder, all pressing shielding cylinder to be designed to middle upper portion in the middle of it all presses shielding cylinder 10 and middle lower portion all to press shielding cylinder 11, all pressing shielding cylinder in the middle of two is to be fixed on the intershield tube pivot flange 18 of upper and lower insulator junction, all presses shielding cylinder 9 to be arranged on insulator 8 tops outward.Base 13 is provided with equal voltage lead wires bar 12.Density monitor 14, secondary connection box 15 and Air filling and discharging valves 16 are set on base 13.This current transformer is designed to two-stage insulator structure, the centre all presses shielding cylinder to be difficult for being offset, and has improved the reliability of insulation system.
Claims (3)
1, a kind of porcelain bushing type superhigh pressure sulfur hexafluoride gas-insulating current transformer, it comprises housing (1), Primary Conductor (2), primary connection plate (3), secondary iron-core coil (4), secondary shield body (5), supporting insulator (6), flange (7), insulator, all presses shielding cylinder, equal voltage lead wires bar (12), base (13), density monitor (14), secondary connection box (15), Air filling and discharging valves (16), it is characterized in that:
A, described insulator are designed to two-stage insulator structure, and promptly insulator is divided into insulator (8) and following insulator (17) two parts, and the junction between its two insulator is provided with an intershield pivot flange (18);
All pressing shielding cylinder to be divided into high pressure in B, the described insulator all presses shielding cylinder (9) and centre all to press shielding cylinder, all pressing shielding cylinder to be designed to middle upper portion in the middle of it all presses shielding cylinder (10) and middle lower portion all to press shielding cylinder (11), all pressing shielding cylinder in the middle of two is to be fixed on the intershield tube pivot flange (18) of upper and lower insulator junction, and high pressure all presses shielding cylinder (9) to be arranged on insulator (8) top.
2, porcelain bushing type superhigh pressure sulfur hexafluoride gas-insulating current transformer according to claim 1 is characterized in that being provided with on the intershield pivot flange (18) grading ring (19).
3,, it is characterized in that it is the overall structure that unites two into one that middle upper portion all presses shielding cylinder (10), middle lower portion all to press shielding cylinder (11) according to claim 1 porcelain bushing type superhigh pressure sulfur hexafluoride gas-insulating current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620051746 CN2927285Y (en) | 2006-07-20 | 2006-07-20 | Ceramic-casing super-voltage sulfur-hexafluoride gas isolated current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620051746 CN2927285Y (en) | 2006-07-20 | 2006-07-20 | Ceramic-casing super-voltage sulfur-hexafluoride gas isolated current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2927285Y true CN2927285Y (en) | 2007-07-25 |
Family
ID=38281538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620051746 Expired - Fee Related CN2927285Y (en) | 2006-07-20 | 2006-07-20 | Ceramic-casing super-voltage sulfur-hexafluoride gas isolated current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2927285Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447327B (en) * | 2008-09-27 | 2010-12-15 | 国网武汉高压研究院 | Method for improving stain resistance of capacitor voltage transformer and device thereof |
| CN106783113A (en) * | 2015-11-19 | 2017-05-31 | 江苏华江科技有限公司 | A kind of gas storage cabinet device of new SF6 gas insulated high voltage current transformers |
| CN106920653A (en) * | 2017-03-16 | 2017-07-04 | 苏州正罡互感器有限公司 | A kind of novel current transformer of use fluorinated Mixed gas insulation |
| WO2018032717A1 (en) * | 2016-08-15 | 2018-02-22 | 江苏智达高压电气有限公司 | Ultra-high voltage electroceramics external-insulation lead-out bushing |
-
2006
- 2006-07-20 CN CN 200620051746 patent/CN2927285Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447327B (en) * | 2008-09-27 | 2010-12-15 | 国网武汉高压研究院 | Method for improving stain resistance of capacitor voltage transformer and device thereof |
| CN106783113A (en) * | 2015-11-19 | 2017-05-31 | 江苏华江科技有限公司 | A kind of gas storage cabinet device of new SF6 gas insulated high voltage current transformers |
| WO2018032717A1 (en) * | 2016-08-15 | 2018-02-22 | 江苏智达高压电气有限公司 | Ultra-high voltage electroceramics external-insulation lead-out bushing |
| CN106920653A (en) * | 2017-03-16 | 2017-07-04 | 苏州正罡互感器有限公司 | A kind of novel current transformer of use fluorinated Mixed gas insulation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |