CN2447927Y - Device for increasing rated current of vacuum circuit breaker - Google Patents
Device for increasing rated current of vacuum circuit breaker Download PDFInfo
- Publication number
- CN2447927Y CN2447927Y CN 00246088 CN00246088U CN2447927Y CN 2447927 Y CN2447927 Y CN 2447927Y CN 00246088 CN00246088 CN 00246088 CN 00246088 U CN00246088 U CN 00246088U CN 2447927 Y CN2447927 Y CN 2447927Y
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- vacuum circuit
- rated current
- positions
- solid insulated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model relates to a device for increasing rated current of a solid insulated vacuum circuit breaker. A ventilating channel (3) is arranged on the upper part of the solid insulated vacuum circuit breaker (1) and is leaded to the connecting position of a moving conductive rod and a conductive clip (4) of a vacuum arc-extinguishing chamber (2). The temperature rise of the position is below other positions through making use of convective heat transfer. The heat conduction and heat radiation effects of other positions can be reinforced through the temperature difference. Finally, the temperature rise of all positions of the inner current-carrying part can be reduced; thereby, the rated current magnitude of the solid insulated vacuum circuit breaker can be raised.
Description
The utility model relates to a kind of device that improves solid isolated vacuum circuit breaker rated current.The technical field that belongs to high voltage switchgear.
The vacuum interrupter of existing solid isolated vacuum circuit breaker, outlet arm up and down, conductive clip, current carrying parts such as soft connection are sealed in the epoxy resin insulation material fully.When circuit breaker was switched on for a long time, the heat that current carrying part produces distributed by thermal radiation and heat conduction, and radiating effect is poor.When rated current is big (greater than 1600A), the inner current carrying part heating of circuit breaker will be above the specification requirement setting.
The purpose of this utility model is at above-mentioned defective, proposes a kind of device that improves solid isolated vacuum circuit breaker rated current, has good heat dissipation effect.And when rated current is big (greater than 1600A), the inner current carrying part heating of circuit breaker meets the setting of specification requirement.
Technical solution of the present utility model:
On solid isolated vacuum circuit breaker top an air duct is arranged, be communicated with the junction of vacuum interrupter moving conductive rod and conductive clip.
Advantage of the present utility model:
When the solid isolated vacuum circuit breaker is switched on for a long time, the heat that inner current carrying part produces in outlet arm position up and down by thermal radiation and heat conducting and radiating, last outlet arm and the quiet end of vacuum interrupter, the dynamic/static contact contact site is by heat conducting and radiating in the vacuum interrupter, when conductive clip and vacuum interrupter connecting portion rely on thermal radiation and heat conducting and radiating, can also make the radiating condition at this position be better than other position, thereby temperature rise to be lower than other position by air duct and extraneous heat convection.The existence of the temperature difference makes that other position heat conducting and radiating effect is strengthened.Thereby being the temperature rise that reduced inner current carrying part all sites, final result can improve the load current value of solid isolated vacuum circuit breaker.
Accompanying drawing is a structural representation of the present utility model
Among the figure 1 is vacuum circuit-breaker, the 2nd, vacuum interrupter, the 3rd, air duct, the 4th, conductive clip.
Operation principle of the present utility model:
The heat that vacuum interrupter moving conductive rod and conductive clip junction produce when energising raises ambient air temperature, and proportion diminishes, and hot-air is upwards discharged along air duct, takes away heat simultaneously,
Following cold air replenishes recently again, and the formation convection current goes round and begins again.
Claims (1)
1, improves the device of vacuum circuit-breaker rated current, it is characterized in that having an air duct (3) to be communicated with the connecting portion of vacuum interrupter (2) moving conductive rod and conductive clip (4) on vacuum circuit-breaker top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00246088 CN2447927Y (en) | 2000-08-09 | 2000-08-09 | Device for increasing rated current of vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00246088 CN2447927Y (en) | 2000-08-09 | 2000-08-09 | Device for increasing rated current of vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2447927Y true CN2447927Y (en) | 2001-09-12 |
Family
ID=33605430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00246088 Expired - Fee Related CN2447927Y (en) | 2000-08-09 | 2000-08-09 | Device for increasing rated current of vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2447927Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100555489C (en) * | 2004-09-24 | 2009-10-28 | 西门子公司 | The insulating material housing that has ventilation shaft |
| CN101809700A (en) * | 2007-10-02 | 2010-08-18 | Abb技术股份公司 | Pole part of a medium-voltage switching device |
| CN102568913A (en) * | 2011-12-21 | 2012-07-11 | 西安交通大学 | Vacuum circuit breaker with improved rated current |
-
2000
- 2000-08-09 CN CN 00246088 patent/CN2447927Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100555489C (en) * | 2004-09-24 | 2009-10-28 | 西门子公司 | The insulating material housing that has ventilation shaft |
| CN101809700A (en) * | 2007-10-02 | 2010-08-18 | Abb技术股份公司 | Pole part of a medium-voltage switching device |
| CN101809700B (en) * | 2007-10-02 | 2013-04-24 | Abb技术股份公司 | Pole part of a medium-voltage switching device |
| CN102568913A (en) * | 2011-12-21 | 2012-07-11 | 西安交通大学 | Vacuum circuit breaker with improved rated current |
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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 |