CN202678108U - Direct current coupling capacitor - Google Patents
Direct current coupling capacitor Download PDFInfo
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- CN202678108U CN202678108U CN 201220313436 CN201220313436U CN202678108U CN 202678108 U CN202678108 U CN 202678108U CN 201220313436 CN201220313436 CN 201220313436 CN 201220313436 U CN201220313436 U CN 201220313436U CN 202678108 U CN202678108 U CN 202678108U
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- coupling capacitor
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Abstract
The utility model provides a direct current coupling capacitor. The capacitor comprises a core, two metal expanders and a porcelain bushing. The core and the two metal expanders are arranged in the porcelain bushing. One metal expander is installed on a top of the core and another metal expander is installed on a bottom of the core. The porcelain bushing is filled with an oil medium. The capacitor of the utility model adopts an installation mode in which the two metal expanders are placed on a top part and a bottom part separately so that an oil quantity and a pressure in the porcelain bushing can be effectively adjusted, electric field distribution is uniform and partial discharging is reduced. Operation and maintenance workloads are reduced. An accident frequency is reduced. Power supply quality is increased and a service life of equipment is prolonged. The coupling capacitor of the utility model is suitable for the coupling capacitor with various kinds of voltage grades and a capacitor voltage transformer. Reliability is high. The service life is long and performance is stable.
Description
Technical field
The utility model relates to coupling capacitor and instrument transformer Manufacture and application field, particularly a kind of direct-current coupling capacitor.
Background technology
See also shown in Figure 1ly, coupling capacitor is comprised of fuse 1, expander 2 and insulator shell 4 of being full of oily medium 3 etc.The effect of expander is the oil temperature volume compensation, and oil temperature raises, and the volume that has increases, and expander is volume contraction then; Oil temperature descends, and expander stretches volume and increases, to guarantee that the not only unlikely pressurized of capacitor is too high but also guarantee that oily medium is filled in the capacitor all the time.
Traditional expander kind has: corrugated expander, the folded corrugated expander of shape, case type expansion apparatus, series expander, interior oil type expander and outer oil type expander.What present old-fashioned coupling capacitor adopted is the outer oil type expander of single-unit, is installed in porcelain bushing top, has more hidden danger (be out of shape easily, leak source is many, and Electric Field Distribution is unequal).And the insulator internal pressure changes apparent in view when temperature raises, absolute pressure is not low yet under the high temperature, cause easily the leakage of oil between casing flange and lid, and in case faults such as generation discharges, the overpressure that produces might cause porcelain bushing to bear higher internal pressure, has increased destabilizing factor to properties of product.
The utility model content
The purpose of this utility model is to provide a kind of direct-current coupling capacitor, to solve the problems of the technologies described above.
To achieve these goals, the utility model adopts following technical scheme:
A kind of direct-current coupling capacitor comprises fuse, two metal expanders and insulator; Described fuse, two metal expanders are arranged in the insulator; Two metal expanders, one is installed on the fuse top, and one is installed on the fuse bottom.
Preferably, be full of in the insulator oily medium is arranged.
With respect to prior art, the utlity model has following advantage: the utility model has adopted the up and down mounting means of two joint placement metal expanders, can not only effectively regulate oil mass and the pressure of insulator inside, and can also make Electric Field Distribution even, reduce partial discharge; Can reduce the operation maintenance workload, reduce accident frequency, improve power supply quality extension device useful life.Coupling capacitor, the capacitance type potential transformer of the applicable and various electric pressures of the utility model, and reliability is high, and the life-span is long, stable performance.
Description of drawings
Fig. 1 is the structural representation of existing coupling capacitor;
Fig. 2 is the structural representation of the utility model coupling capacitor.
Embodiment
See also shown in Figure 2ly, a kind of direct-current coupling capacitor of the utility model comprises by fuse 1, metal expander 20 and is full of the insulator 4 of oily medium 3.Two metal expanders 20 are arranged at respectively the upper/lower terminal of fuse 1, can improve capacitor body 1 and distribute at insulator 4 internal electric fields, reduce the path of connecting line, reduce single metal expander 20 height, effectively increase compensation rate, reduce partial discharge.
The utility model has adopted the up and down mounting means of two joint placement metal expanders, can not only effectively regulate oil mass and the pressure of insulator inside, and can also make Electric Field Distribution even, reduces partial discharge; Can reduce the operation maintenance workload, reduce accident frequency, improve power supply quality extension device useful life.Coupling capacitor, the capacitance type potential transformer of the applicable and various electric pressures of the utility model, and reliability is high, and the life-span is long, stable performance.
Claims (2)
1. a direct-current coupling capacitor is characterized in that, comprises fuse (1), two metal expanders (20) and insulator (4); Described fuse (1), two metal expanders (20) are arranged in the insulator (4); Two metal expanders (20), one is installed on fuse (1) top, and one is installed on fuse (2) bottom.
2. a kind of direct-current coupling capacitor according to claim 1 is characterized in that, being full of in the insulator (4) has oily medium (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220313436 CN202678108U (en) | 2012-06-29 | 2012-06-29 | Direct current coupling capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220313436 CN202678108U (en) | 2012-06-29 | 2012-06-29 | Direct current coupling capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678108U true CN202678108U (en) | 2013-01-16 |
Family
ID=47498994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220313436 Expired - Lifetime CN202678108U (en) | 2012-06-29 | 2012-06-29 | Direct current coupling capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678108U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594244A (en) * | 2013-11-01 | 2014-02-19 | 中国西电电气股份有限公司 | Bushing type condenser with heat dissipation structure |
| WO2021248594A1 (en) * | 2020-06-10 | 2021-12-16 | 苏州电器科学研究院股份有限公司 | Capacitance-type voltage transformer |
-
2012
- 2012-06-29 CN CN 201220313436 patent/CN202678108U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594244A (en) * | 2013-11-01 | 2014-02-19 | 中国西电电气股份有限公司 | Bushing type condenser with heat dissipation structure |
| CN103594244B (en) * | 2013-11-01 | 2016-03-02 | 中国西电电气股份有限公司 | A kind of bushing type condenser with radiator structure |
| WO2021248594A1 (en) * | 2020-06-10 | 2021-12-16 | 苏州电器科学研究院股份有限公司 | Capacitance-type voltage transformer |
| US11894180B2 (en) | 2020-06-10 | 2024-02-06 | Suzhou Apparatus Science Academy Co., Ltd. | Capacitive voltage transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: XI'AN XD POWER CAPACITOR Co.,Ltd. Assignor: CHINA XD ELECTRIC Co.,Ltd. Contract record no.: 2014610000112 Denomination of utility model: Direct current coupling capacitor Granted publication date: 20130116 License type: Exclusive License Record date: 20140801 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |
|
| CX01 | Expiry of patent term |