CN204102798U - A kind of SF6 high-voltage breaker explosion chamber with contact shield cover - Google Patents
A kind of SF6 high-voltage breaker explosion chamber with contact shield cover Download PDFInfo
- Publication number
- CN204102798U CN204102798U CN201420493583.1U CN201420493583U CN204102798U CN 204102798 U CN204102798 U CN 204102798U CN 201420493583 U CN201420493583 U CN 201420493583U CN 204102798 U CN204102798 U CN 204102798U
- Authority
- CN
- China
- Prior art keywords
- contact
- shield cover
- nozzle
- upper contact
- contact head
- 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
- 238000004880 explosion Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 208000032767 Device breakage Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Circuit Breakers (AREA)
Abstract
A kind of SF with contact shield cover
6high-voltage breaker explosion chamber belongs to field of electrical equipment.The technical solution of the utility model is: fixed contact radome on the nozzle of arc control device, synchronously move downward with nozzle, lower contact during contact shield cover separating brake, the trundle of nozzle on the draw bar that is consolidated with it and draw bar, promotion shift fork rotates counterclockwise, mention upper contact head to move upward, with lower contact counter motion, the short arcing period after just dividing, upper contact head enters the blind zone of contact shield cover, and guide plate acts on radial load on upper contact head for balancing shift fork in rotation process.Beneficial effect is: contact shield cover carries out water conservancy diversion and cooling to the thermal current gone out from nozzle, make contact gap not heated airflow interference in the phase of cut-offfing, effectively avoid upper contact head generation flashover and electrical breakdown, arc control device break performance is improved, improve the reliability of cut-offfing, extend its life-span, novel in design, rational in infrastructure, cost is low, profitable.
Description
Technical field
A kind of SF with contact shield cover
6high-voltage breaker explosion chamber belongs to field of electrical equipment.
Background technology
SF
6primary cut-out adopts the SF with excellent arc extinguishing ability and insulating capacity
6gas, as arc-extinguishing medium, has the advantages such as connecting-disconnecting function is strong, action is fast, volume is little, and development in recent years is very fast, is used widely.At present, according to the difference of arc quenching chamber structure, SF
6primary cut-out mainly contains the single pressure type SF adopting gas-blast extinguish chamber
6circuit breaker and the SF with " self energy " arc-suppression function
6circuit breaker, wherein especially with adopt upper and lower contact when cut-offfing heterodromous two dynamic structure self-energy arc-extinguishing chamber at SF
6apply the most general in primary cut-out.But this pair of moving contact arc control device especially separating brake process early stages in separating brake process, upper contact head end field intensity is very high, in high-voltage loaded lower easy generation flashover and electrical breakdown, is urgently improved, a kind of new SF of innovation development
6high-voltage breaker explosion chamber.
Summary of the invention
The purpose of this utility model is exactly for existing SF
6the deficiency of high-voltage breaker explosion chamber, a kind of SF with contact shield cover of innovation development
6high-voltage breaker explosion chamber.
The technical solution of the utility model is: fixed contact radome on the nozzle of arc control device, synchronously move downward with nozzle, lower contact during contact shield cover separating brake, the trundle of nozzle on the draw bar that is consolidated with it and draw bar, promotion shift fork rotates counterclockwise, mention upper contact head to move upward, with lower contact counter motion, the short arcing period after just dividing, upper contact head enters the blind zone of contact shield cover, and guide plate acts on radial load on upper contact head for balancing shift fork in rotation process.
The beneficial effects of the utility model are: contact shield cover carries out water conservancy diversion and cooling to the thermal current gone out from nozzle, make contact gap not heated airflow interference in the phase of cut-offfing, effectively avoid upper contact head generation flashover and electrical breakdown, arc control device break performance is improved, improve the reliability of cut-offfing, extend its life-span, novel in design, rational in infrastructure, cost is low, profitable.
Accompanying drawing explanation
Fig. 1 is structure cross-sectional schematic of the present utility model.
Embodiment
Composition graphs 1 describes details of the present utility model and the course of work in detail.For based on the self-energy arc-extinguishing chamber of arc energy supercharging, mainly block the arc energy of upstream to heat SF by nozzle 3
6gas also sets up blast pressure.Should there be larger acceleration at the separating brake initial stage, and also will keep enough opening velocities in short arcing and long arcing period, should there be mild damping characteristics in the separating brake later stage.For SF
6primary cut-out, make arc control device fracture Electric Field Distribution as far as possible even and reduce contact maximum field strength, we take following technical scheme: fixed contact radome 2 on the nozzle 3 of arc control device, during contact shield cover 2 separating brake and nozzle 3, lower contact 4 synchronously moves downward, trundle 6 on the draw bar 5 of nozzle 3 through being consolidated with it and draw bar 5, promote shift fork 7 to rotate counterclockwise, mention upper contact head 1 to move upward, with the counter motion of lower contact 4, the short arcing period after just dividing, upper contact head 1 enters the blind zone of contact shield cover 2, guide plate 8 acts on radial load on upper contact head 1 for balancing shift fork 7 in rotation process.Contact shield cover 2 carries out water conservancy diversion and cooling to the thermal current gone out from nozzle 3, makes contact gap not heated airflow interference in the phase of cut-offfing, effectively avoids upper contact head 1 that flashover and electrical breakdown occur.The fixed position of contact shield cover 2 on nozzle 3 is more downward near lower contact 4, and during separating brake, upper contact head 1 more can enter blind zone in advance, better to the shield effectiveness of upper contact head 1.But during open position, opening apart from limiting the extreme position that contact shield cover 2 moves down of fracture necessity.As calculated and validation trial, after just point about 11 milliseconds to 12 milliseconds, upper contact head 1 enters the blind zone of contact shield cover 2, and shield effectiveness is best.In addition, the shape and size of contact shield cover 2 also have a significant impact shield effectiveness, and bore should not be too large, and have certain radius of curvature, this is particularly important for extreme high voltage grade.In a word, SF
6after high-voltage breaker explosion chamber sets up contact shield cover 2, make arc extinguishing stop up break performance and improve, improve the reliability of cut-offfing, extend its life-span, novel in design, rational in infrastructure, cost is low, profitable.
Claims (1)
1. the SF with contact shield cover
6high-voltage breaker explosion chamber, it is characterized in that: at the upper fixed contact radome (2) of the nozzle (3) of arc control device, during contact shield cover (2) separating brake and nozzle (3), lower contact (4) synchronously moves downward, the trundle (6) of nozzle (3) on the draw bar (5) that is consolidated with it and draw bar (5), promote shift fork (7) to rotate counterclockwise, mention upper contact head (1) to move upward, with the counter motion of lower contact (4), the short arcing period after just dividing, upper contact head (1) enters the blind zone of contact shield cover (2), guide plate (8) acts on radial load on upper contact head (1) for balancing shift fork (7) in rotation process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420493583.1U CN204102798U (en) | 2014-08-29 | 2014-08-29 | A kind of SF6 high-voltage breaker explosion chamber with contact shield cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420493583.1U CN204102798U (en) | 2014-08-29 | 2014-08-29 | A kind of SF6 high-voltage breaker explosion chamber with contact shield cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204102798U true CN204102798U (en) | 2015-01-14 |
Family
ID=52271204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420493583.1U Expired - Fee Related CN204102798U (en) | 2014-08-29 | 2014-08-29 | A kind of SF6 high-voltage breaker explosion chamber with contact shield cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204102798U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710948A (en) * | 2017-02-10 | 2017-05-24 | 平高集团有限公司 | Breaker, arc extinguish chamber thereof, arc contact component for arc extinguish chamber and arc contact driving rod |
| CN107464708A (en) * | 2017-09-27 | 2017-12-12 | 湖南长高电气有限公司 | Primary cut-out with gas cooling passage |
| CN112509853A (en) * | 2020-12-02 | 2021-03-16 | 特变电工云集高压开关有限公司 | Airflow control element with shielding function |
-
2014
- 2014-08-29 CN CN201420493583.1U patent/CN204102798U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710948A (en) * | 2017-02-10 | 2017-05-24 | 平高集团有限公司 | Breaker, arc extinguish chamber thereof, arc contact component for arc extinguish chamber and arc contact driving rod |
| CN107464708A (en) * | 2017-09-27 | 2017-12-12 | 湖南长高电气有限公司 | Primary cut-out with gas cooling passage |
| CN107464708B (en) * | 2017-09-27 | 2021-06-18 | 湖南长高电气有限公司 | High-voltage circuit breaker with gas cooling channel |
| CN112509853A (en) * | 2020-12-02 | 2021-03-16 | 特变电工云集高压开关有限公司 | Airflow control element with shielding function |
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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: 20150114 Termination date: 20150829 |
|
| EXPY | Termination of patent right or utility model |