CN104715947A - Arc-extinguishing structure of medium-voltage switch - Google Patents
Arc-extinguishing structure of medium-voltage switch Download PDFInfo
- Publication number
- CN104715947A CN104715947A CN201510147243.2A CN201510147243A CN104715947A CN 104715947 A CN104715947 A CN 104715947A CN 201510147243 A CN201510147243 A CN 201510147243A CN 104715947 A CN104715947 A CN 104715947A
- Authority
- CN
- China
- Prior art keywords
- voltage switch
- moving contact
- circuit breaker
- medium voltage
- extinguishing structure
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/32—Insulating body insertable between contacts
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses an arc-extinguishing structure of a medium-voltage switch. The arc-extinguishing structure comprises an insulation sheet capable of synchronously moving with a moving contact, wherein the insulation sheet is located between the moving contact and a static contact in an opening state so as to isolate an electric arc, and a linkage mechanism is arranged between the insulation sheet and an operation mechanism of the moving contact; after adopting the scheme, the medium-voltage switch does not need a vacuum arc-extinguishing chamber and SF6 gas also does not need to be charged, so that the cost is low and the arc-extinguishing speed is high.
Description
Technical field
The present invention relates to middle pressure electric field, under espespecially pure air under 10kV electric pressure, utilize insulation board to insert the technical field of carrying out arc extinguishing between dynamic/static contact.
Background technology
Along with the carrying out of urban construction, skyscraper can be found everywhere, and becomes distribution and be all located at downstairs, according to fire-fighting requirements, becomes non-oil ultra high vacuum system required by distribution transforming, and according to the reasonable employment building area, distribution equipment should " miniaturization ".Commonly use device for switching and all can produce high-voltage arc when separating brake, electric arc is a kind of free gas of high temperature high conductivity, show as the high temperature spark of moment, conductive contact position can be burnt, cause very large destructiveness, serious meeting causes electric equipment to blast accident, and therefore arc extinguishing seems still for important.
The mode of device for switching extinguish arcs has following several mode, main relevant with surrounding medium, mainly contain arc extinction by elongating arc in atmosphere, in a vacuum, in SF6, the arc extinction mode of existing invention, almost has nothing to do with medium, can extinguish arcs in SF6 medium, in atmosphere also can extinguish arcs.But no matter which kind of arc extinguishing scheme, all has considerable restraint and restriction, can only be applied in some specific scheme, such as, the schemes such as air-blowing, magnetic blow-out, arc extinguishing grid pieces can be adopted in SF6, can because the greenhouse effect of SF6 gas and switchgear be to the requirement of sealing, unsuitable large-scale popularization; Air is merely by elongating arc, and under high-tension environment, product design volume is too large, does not have economic worth; Vacuum extinction, complex manufacturing, product itself is high to seal request, simultaneously because the break performance of vacuum extinction is too high, easily produces overvoltage in systems in which, impacts and vibrate to system.
Summary of the invention
The object of the present invention is to provide the structure of simple, the reliable arc extinguishing of a kind of, structure not high to medium requirements.
For achieving the above object, a kind of Medium voltage switch or circuit breaker arc extinguishing structure of the present invention, be provided with moving contact in switch and form with moving contact the fixed contact that switching is connected, wherein, also comprising one can insulating trip synchronization-moving with moving contact, this insulating trip telescopic stretching when gate-dividing state is placed between moving contact and fixed contact, is provided with link gear between this insulating trip and moving contact operating mechanism.
Described insulating trip is an insulation slide plate, has sliding sleeve in two sides, and two guide rails draw and are located on on-load switch sidewall, and the sliding sleeve of insulation slide plate is set on guide rail.
Described insulation slide plate dual-side hangs spring, and the other end of spring is hung on on-load switch sidewall along guide rail.
In on-load switch, be parallel to fixed contact be provided with insulating barrier, insulation slide plate leading section under gate-dividing state removable top to insulating barrier.
Described insulating barrier end is provided with nosing to insulation slide plate side, and this nosing is located at above insulation slide plate leading section under gate-dividing state.
After have employed such scheme, insulating trip is removed under link gear effect when on-load switch closes a floodgate, when separating brake, insulating trip is released, and moves quickly between moving contact and fixed contact under the action of the spring, and the electric arc that at this moment separating brake produces is equivalent to be stretched and extinguishes under insulating trip effect.
Accompanying drawing explanation
Fig. 1 is on-load switch "on" position cutaway view of the present invention;
Fig. 2 is on-load switch gate-dividing state cutaway view of the present invention;
Fig. 3 is that the present invention is insulated slide vane structure schematic diagram;
Fig. 4 is that the present invention is insulated slide plate vertical view when "on" position;
Fig. 5 is that the present invention is insulated slide plate vertical view when gate-dividing state.
Label declaration:
1, Medium voltage switch or circuit breaker; 2, upper static contact; 3, moving contact; 4, lower fixed contact; 5 arc extinguishing grid pieces; 6, insulating barrier; 61, nosing; 7, insulate slide plate; 71, sliding sleeve; 72, insulate slide plate leading section; 8, guide rail; 9, spring.
Embodiment
By describing technology contents of the present invention, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
Refer to Fig. 1 and Fig. 2, a kind of Medium voltage switch or circuit breaker arc extinguishing structure of the present invention, is provided with upper static contact 2, moving contact 3 and lower fixed contact 4 in switch 1, and upper static contact 2 and lower fixed contact 4 side are provided with arc extinguishing grid pieces 5.Moving contact 3 rotates to be switched on or switched off and realizes closing a floodgate and separating brake with the connection of upper static contact 2 and lower fixed contact 4.On-load switch 1 two side is provided with two groups of guide rails 8, and as shown in Figure 4,5, insulation slide plate 7 is movably set on guide rail 8 by sliding sleeve 71, and as shown in Figure 3, insulation slide plate 7 is provided with ear in side and rear portion, and sliding sleeve 71 is located at two sides.As shown in Figure 4,5, insulation slide plate 7 dual-side hangs spring 9, and the other end of spring 9 is hung on on-load switch 1 sidewall along guide rail 8.In on-load switch 1, be parallel to fixed contact be provided with insulating barrier 6, insulation slide plate leading section 72 under gate-dividing state removable top to insulating barrier 6, insulating barrier 6 end is provided with nosing 61 to insulation slide plate side, and this nosing 61 is located at above insulation slide plate leading section under gate-dividing state.
During use, as shown in Fig. 1,4, when closing a floodgate, moving contact 3 rotates and connects upper and lower static contact under operating mechanism drives, the link gear be connected with operating mechanism (can be gear or other kinds of drive, this interlock scheme is techniques well known, is not repeating herein) drive insulation slide plate 7 to move to the one end away from fixed contact, spring 9 is stretched.As shown in Fig. 2,5, when separating brake, moving contact 3 rotates and departs from upper and lower static contact under operating mechanism drives, insulation slide plate 7 is released, the top of fixed contact 4 is moved quickly under the effect of spring 9, insulation slide plate 7 forms an insulating cover with insulating barrier 6 and is located on fixed contact, has isolated the electric arc between dynamic/static contact, makes it to extinguish.After adopting this programme, do not need vacuum interrupter, also do not need to fill SF6 gas, cost is low, and arc extinguishing is quick, and certain the present invention also can be used for existing product to promote arc quenching effect.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent shapes or Structural Transformation; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a Medium voltage switch or circuit breaker arc extinguishing structure, be provided with moving contact in this Medium voltage switch or circuit breaker and form with moving contact the fixed contact closing a floodgate and be connected, it is characterized in that: also comprising one can insulating trip synchronization-moving with moving contact, this insulating trip when gate-dividing state between moving contact and fixed contact to isolate electric arc, be provided with link gear between this insulating trip and moving contact operating mechanism.
2. a kind of Medium voltage switch or circuit breaker arc extinguishing structure as claimed in claim 1, is characterized in that: described arc quenching plate is an insulation board, and insulation board can move on guide rail, and switch is in gate-dividing state, and this insulation board is placed between fixed contact and moving contact.
3. a kind of Medium voltage switch or circuit breaker arc extinguishing structure as claimed in claim 2, is characterized in that: described insulation slide plate dual-side hangs spring, and the other end of spring is hung on on-load switch sidewall along guide rail.
4. Medium voltage switch or circuit breaker arc extinguishing structure as claimed in claim 1, is characterized in that: in switch, be parallel to fixed contact be provided with insulating barrier, insulating trip leading section under gate-dividing state removable top to insulating barrier.
5. Medium voltage switch or circuit breaker arc extinguishing structure as claimed in claim 1, is characterized in that: described insulating barrier end is provided with nosing to insulating trip side, and this nosing is located at above insulating trip leading section under gate-dividing state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510147243.2A CN104715947B (en) | 2015-03-31 | 2015-03-31 | A kind of arc extinguishing structure of Medium voltage switch or circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510147243.2A CN104715947B (en) | 2015-03-31 | 2015-03-31 | A kind of arc extinguishing structure of Medium voltage switch or circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104715947A true CN104715947A (en) | 2015-06-17 |
| CN104715947B CN104715947B (en) | 2018-12-04 |
Family
ID=53415174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510147243.2A Active CN104715947B (en) | 2015-03-31 | 2015-03-31 | A kind of arc extinguishing structure of Medium voltage switch or circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104715947B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107527773A (en) * | 2017-08-23 | 2017-12-29 | 河北宝凯电气股份有限公司 | A kind of omnipotent breaker with powerful arc extinction performance |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1457065A (en) * | 2003-03-12 | 2003-11-19 | 北京人民电器厂 | Circuit breaker forced extinguisher |
| CN1914696A (en) * | 2004-04-19 | 2007-02-14 | 苏勒过压保护公司 | Surge voltage protection device with arc-breaking means |
| CN201689799U (en) * | 2010-05-13 | 2010-12-29 | 漳州马可电器科技有限公司 | Isolating switch with arc interrupting device |
| CN102664113A (en) * | 2012-05-16 | 2012-09-12 | 安文胜 | Electric appliance switch taking flame-retardant insulating partition as breaking medium |
| JP5050389B2 (en) * | 2006-04-05 | 2012-10-17 | 株式会社戸上電機製作所 | Arc extinguishing method in a switch |
| CN203192642U (en) * | 2013-01-23 | 2013-09-11 | 沈俊国 | Insulation barrier and arc-extinguishing type electric appliance switch contact head |
| CN204680573U (en) * | 2015-03-31 | 2015-09-30 | 厦门柏瑞科电气有限公司 | A kind of Medium voltage switch or circuit breaker arc extinguishing structure |
-
2015
- 2015-03-31 CN CN201510147243.2A patent/CN104715947B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1457065A (en) * | 2003-03-12 | 2003-11-19 | 北京人民电器厂 | Circuit breaker forced extinguisher |
| CN1914696A (en) * | 2004-04-19 | 2007-02-14 | 苏勒过压保护公司 | Surge voltage protection device with arc-breaking means |
| JP5050389B2 (en) * | 2006-04-05 | 2012-10-17 | 株式会社戸上電機製作所 | Arc extinguishing method in a switch |
| CN201689799U (en) * | 2010-05-13 | 2010-12-29 | 漳州马可电器科技有限公司 | Isolating switch with arc interrupting device |
| CN102664113A (en) * | 2012-05-16 | 2012-09-12 | 安文胜 | Electric appliance switch taking flame-retardant insulating partition as breaking medium |
| CN203192642U (en) * | 2013-01-23 | 2013-09-11 | 沈俊国 | Insulation barrier and arc-extinguishing type electric appliance switch contact head |
| CN204680573U (en) * | 2015-03-31 | 2015-09-30 | 厦门柏瑞科电气有限公司 | A kind of Medium voltage switch or circuit breaker arc extinguishing structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107527773A (en) * | 2017-08-23 | 2017-12-29 | 河北宝凯电气股份有限公司 | A kind of omnipotent breaker with powerful arc extinction performance |
| CN107527773B (en) * | 2017-08-23 | 2020-02-18 | 河北宝凯电气股份有限公司 | Universal circuit breaker with arc extinguishing performance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104715947B (en) | 2018-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104576175B (en) | High-voltage double-break circuit breaker | |
| CN104752984B (en) | Environmentally-friendly gas insulated switching cabinet and operation method thereof | |
| RU2517688C2 (en) | Hybrid gas-blast circuit breaker for switchgear with sf6 gas insulation | |
| WO2013127084A1 (en) | Vacuum arc-extinguishing chamber with fixed fracture | |
| AU2018217779B2 (en) | Arc splitter plate | |
| CN103646820A (en) | High-voltage directly-operated air-compressing type SF6 load switch device | |
| CN105185649A (en) | Indoor high-voltage load switch device and method for turning off load current | |
| CN204303660U (en) | A kind of single arc-chutes double-fracture breaker | |
| CN204680573U (en) | A kind of Medium voltage switch or circuit breaker arc extinguishing structure | |
| CN100350534C (en) | Four pole multi speed disjunction contact of extra-high-voltage breaker | |
| CN103730289A (en) | Sulfur hexafluoride gas arc extinguishing switching device | |
| CN1747094A (en) | Double-speed segmented contact of ultrahigh voltage | |
| CN104715947A (en) | Arc-extinguishing structure of medium-voltage switch | |
| EP2667395B1 (en) | Gas insulated switchgear | |
| CN101393814A (en) | 72.5kV indoor type high-voltage SF6 circuit breaker | |
| CN201570436U (en) | Self-energy sulphur hexafluoride high-voltage circuit breaker | |
| CN104465256B (en) | Arc extinguishing chamber for isolation breaker and isolation breaker comprising same | |
| CN111403231B (en) | Hybrid arc extinguishing chamber | |
| CN100370564C (en) | Single-break-port breaker of 550 KV voltage grade | |
| CN203644655U (en) | High pressure direct pneumatic SF6 load switch device | |
| CN2817041Y (en) | Multiple-speed disjunction contact for super-high-voltage switch | |
| CN104715965A (en) | Long-electrical-life capacitor bank switch device for ultrahigh voltage engineering | |
| CN105448590A (en) | High voltage load device with load switch | |
| RU2498439C1 (en) | Vacuum dead-tank circuit breaker | |
| WO2014096221A1 (en) | Contact arrangement for high voltage switchgear and switchgear with contact arrangement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |