CN104715965A - Long-electrical-life capacitor bank switch device for ultrahigh voltage engineering - Google Patents
Long-electrical-life capacitor bank switch device for ultrahigh voltage engineering Download PDFInfo
- Publication number
- CN104715965A CN104715965A CN201510036216.8A CN201510036216A CN104715965A CN 104715965 A CN104715965 A CN 104715965A CN 201510036216 A CN201510036216 A CN 201510036216A CN 104715965 A CN104715965 A CN 104715965A
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- Prior art keywords
- contact
- arc
- fixed
- high electrical
- switching device
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
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- Circuit Breakers (AREA)
Abstract
The invention belongs to the field of ultrahigh voltage, and particularly discloses a long-electrical-life capacitor bank switch device for ultrahigh voltage engineering. The long-electrical-life capacitor bank switch device comprises a support, a spring mechanism, a support column sleeve, a pull rod and an arc extinguish chamber. The spring mechanism conducts releasing through a spring, the pull rod drives a main contact to move, and the switch device is turned on and turned off; when a back-to-back capacitor bank is turned on and turned off, a movable contact mechanically moves so that gas in a cylinder can produce the internal and external pressure difference, and strong gas is produced to blow out an arc; the large-span and high-speed structure is designed, the arc extinguishing chamber is prevented from restrike, the whole arc extinguishing chamber is sealed in an arc extinguishing sleeve, and the environmental suitability is high; the long-electrical-life capacitor bank switch device has the advantages of being simple and compact in structure, stable and reliable in action, high in arc extinguishing performance and long in electrical life.
Description
Technical field
The present invention relates to a kind of structure of the high-voltage switch gear be applied in extra-high voltage Force system, specifically the high electrical endurance Capacitor banks switching device of a kind of superhigh pressure engineering.
Background technology
In superhigh pressure engineering, breaker operator often, every day opening-closing capacitor bank at least once, secondary or more at most.Therefore the circuit breaker undertaking capacitor group switching work is required to have high electrical endurance, also require that circuit breaker should not produce high overvoltage when interrupting capacitor set in addition, and hugely shoving of producing due to overvoltage, cause the infringement to Capacitor banks.Traditional high voltage switching device can meet and cut-offs tens kilo-ampere short-circuit currents, but when cut-offfing capacity current (especially back-to-back Capacitor banks electric current), especially easily repeated breakdown occurs, after repeated breakdown, Overvoltage Amplitude greatly directly causes capacitor and other high-tension apparatus to damage.
Summary of the invention
For solving the technical problem of above-mentioned existence, the invention provides the high electrical endurance Capacitor banks switching device of a kind of superhigh pressure engineering, have simple and compact for structure, stable action is reliable, arc extinction performance is strong, the feature of long service life.
In order to achieve the above object, the technical solution used in the present invention is as follows:
The high electrical endurance Capacitor banks switching device of superhigh pressure engineering, includes upper wiring board, quiet bearing, arc extinguishing sleeve pipe, quiet main contact, static arc contact, spout, moving arcing contact, dynamic main contact, cylinder, quiet bearing, pull bar, lower terminal block, pillar sleeve, support, spring mechanism.
Wherein, in order to realize, the superhigh pressure engineering high speed of high electrical endurance Capacitor banks switching device is divided, closing speed, joins two switching-in spring, the tripping spring of 1 overstriking in mechanism.For realizing effectively cut-offfing of small area analysis, reduce Arc choke effect, spout have passed through optimization, achieves the quick drain of air-flow, and cylinder is 2 air chambers structure, top is divided into thermal expansion room, and bottom is divided into plenum chamber, be provided with valve block between 2 air chambers, during separating brake, valve block is opened, and during combined floodgate, valve block closes.
Arc control device are assembled by moving contact, fixed contact assembles, arc extinguishing sleeve pipe forms; Wherein, moving contact assembling comprises lower terminal block, dynamic bearing, cylinder, moving arcing contact, dynamic main contact, spout, and fixed contact assembling comprises quiet main contact, static arc contact, quiet bearing, upper wiring board.For improving insulation level, arc control device have employed large opening structure, calculate acquisition the best open distance by analysis of electric field.
In sum, in the present invention, high electrical endurance Capacitor banks switching device is when closing capacity current, and arcing contact first punctures the starting the arc, avoids main contact place and punctures electric arc damage burning; When cut-offfing back-to-back Capacitor banks electric current, dynamic main contact makes cylinder interior gas produce inside and outside differential pressure by mechanical movement, produce strong air-blowing extinguish arcs, because the large scale in spout larynx footpath designs, avoid Arc choke, gas in expanding chamber has little time to be heated and is directly taken out of by plenum chamber gas, the air velocity of now spout ejection is low, thus increase short arcing switch off time, designed opening velocity is fast, after short arcing is extinguished, insulation distance existing enough between fracture, prevents the generation of repeated breakdown.When cut-offfing short trouble big current, Arc choke effect occurs, and due to the calcination of electric arc, the gas pressure of thermal expansion indoor raises rapidly, and after static arc contact is separated larynx footpath, gas sprays rapidly, by arc extinction after current zero-crossing point.
The invention has the beneficial effects as follows: meet cut-off short-circuit current, also can meet Small Capacitive Current Interruption, without repeated breakdown, and have simple and compact for structure, stable action is reliable, arc extinction performance is strong, the feature of long service life.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, invention is explained.
Accompanying drawing 1 is structural representation of the present invention.
In figure, 1 upper wiring board, 2 quiet bearings, 3 arc extinguishing sleeve pipes, 4 quiet main contacts, 5 static arc contacts, 6 spouts, 7 moving arcing contacts, 8 dynamic main contacts, 9 cylinders, 10 dynamic bearings, 11 pull bars, 12 times terminal blocks, 13 pillar sleeves, 14 supports, 15 spring mechanisms.
Embodiment
Describe the present invention below in conjunction with the drawings and specific embodiments:
Accompanying drawing is a specific embodiment of the present invention, includes upper wiring board 1, quiet bearing 2, arc extinguishing sleeve pipe 3, quiet main contact 4, static arc contact 5, spout 6, moving arcing contact 7, dynamic main contact 8, cylinder 9, dynamic bearing 10, pull bar 11, lower terminal block 12, pillar sleeve 13, support 14 and spring mechanism 15.
First static arc contact 5 is by being threaded into quiet bearing 2, and quiet main contact is connected with quiet bearing 2 by bolt, and quiet bearing 2 is bolted on upper wiring board 1, and this part is called that fixed contact assembles; Moving arcing contact 7 is by being threaded into dynamic main contact 8, dynamic main contact 8 realizes being connected with cylinder 9 by bolt, and spout 6 is compressed simultaneously, pull bar 11 is connected with dynamic main contact by screw thread, dynamic bearing 10 is connected with lower terminal block 12 by bolt, dynamic bearing 10 indoor design has cannelure to lay guide ring and spring touch finger, and form conductive contact through spring touch finger and guide ring with cylinder 9, this part is called that moving contact assembles.
Lower terminal block 12 in being assembled by moving contact is bolted on pillar sleeve 13, then arc extinguishing sleeve pipe 3 is connected with lower terminal block 12 by bolt, upper wiring board 1 in being assembled by fixed contact is again connected with arc extinguishing sleeve pipe 3 by bolt, forms complete arc control device.
Pillar sleeve 13 is bolted on support 14, and then spring mechanism 15 is connected with support 14 by bolt, and the running part in spring mechanism 15 is connected with pull bar 11 by bolt, realizes the motion of moving contact part.
During spring mechanism 15 separating brake, tripping spring releases energy, mechanism driving part drives pull bar 11, and pull bar 11 is with dynamic air cylinder 9, moving arcing contact 7, dynamic main contact 8, spout 6 to move downward, now, cylinder 11 internal compressed gas, at spout 6 place due to the effect of electric arc and compression cylinder, formed in cylinder 11 and spout 6 downstream part exists pressure differential, during electric arc zero passage, form air-blowing, extinguish arcs.
When spring mechanism 15 closes a floodgate, switching-in spring releases energy, mechanism driving part drives pull bar 11, pull bar 11 is with dynamic air cylinder 9, moving arcing contact 7, dynamic main contact 8, spout 6 to move upward, and moving arcing contact 7 and static arc contact 5, due to the voltage prebreakdown first starting the arc, then contact, and then, continue to move upward, dynamic main contact 8 contacts with quiet main contact 4, forms making process.
In the present invention, high electrical endurance Capacitor banks switching device is when closing capacity current, first punctures the starting the arc between arcing contact, avoids main contact and is punctured electric arc damage burning; When cut-offfing back-to-back Capacitor banks electric current, moving contact makes cylinder interior gas produce inside and outside differential pressure by mechanical movement, produce strong air-blowing extinguish arcs, because the large scale in spout larynx footpath designs, avoid Arc choke, gas in expanding chamber has little time to be heated and is directly taken out of by plenum chamber gas, the air velocity of now spout ejection is low, thus increase short arcing switch off time, designed opening velocity is fast, after short arcing is extinguished, insulation distance existing enough between fracture, prevents the generation of repeated breakdown.When cut-offfing short circuit interruption short trouble big current, Arc choke effect occurs, and due to the calcination of electric arc, the gas pressure of thermal expansion indoor raises rapidly, and after static arc contact is separated larynx footpath, gas sprays rapidly, by arc extinction after current zero-crossing point.Therefore this device can meet and cut-offs short-circuit current, also can meet Small Capacitive Current Interruption, without repeated breakdown, and have simple and compact for structure, stable action is reliable, arc extinction performance is strong, the feature of long service life.
Claims (7)
1. the high electrical endurance Capacitor banks switching device of superhigh pressure engineering, is characterized in that, includes support, spring mechanism, pillar sleeve, pull bar, (arc control device comprise moving contact assembling, fixed contact assembling, arc extinguishing sleeve pipe to arc control device; Wherein, moving contact assembling comprises lower terminal block, dynamic bearing, cylinder, moving arcing contact, dynamic main contact, spout, and fixed contact assembling comprises quiet main contact, static arc contact, quiet bearing, upper wiring board).
2. spring mechanism is arranged on bottom pillar sleeve, is fixed on support, and whole arc control device are all enclosed in arc extinguishing sleeve pipe, and arc control device are fixed on insulation column upper flange.
3. the high electrical endurance Capacitor banks switching device of superhigh pressure engineering according to claim 1, it is characterized in that, in described moving contact assembling, dynamic bearing is fixed on lower terminal block, dynamic bearing indoor design ring shaped slot lays guide ring and spring touch finger, is dynamically connected with cylinder formation through spring touch finger, and cylinder connects with dynamic main contact and fixed by spout, dynamic main contact inside is provided with joint, and moving arcing contact is fixed on joint top.
4. the high electrical endurance Capacitor banks switching device of superhigh pressure engineering according to claim 1, is characterized in that, in described fixed contact assembling, quiet bearing is fixed on upper wiring board, and quiet main contact and static arc contact are installed in quiet bearing bottom.
5. the high electrical endurance Capacitor banks switching device of superhigh pressure engineering according to claim 2, it is characterized in that, described cylinder is 2 air chambers structure, top is divided into thermal expansion room, and bottom is divided into plenum chamber, is provided with valve block between 2 air chambers, during separating brake, valve block is opened, and during combined floodgate, valve block closes;
The high electrical endurance Capacitor banks switching device of superhigh pressure engineering according to claim 2, is characterized in that, described spout larynx footpath is designed for large scale, reduces arc current blocking as far as possible, reduces air-blowing speed.
6. the high electrical endurance Capacitor banks switching device of superhigh pressure engineering according to claim 1, it is characterized in that, described spring mechanism is designed to pairing brake spring, overstriking sluice separating spring structure, improves splitting or integrating lock speed.
7. the high electrical endurance Capacitor banks switching device of superhigh pressure engineering according to claim 1, it is characterized in that, described arc control device are large opening structure, calculate acquisition the best open distance by analysis of electric field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036216.8A CN104715965A (en) | 2015-01-26 | 2015-01-26 | Long-electrical-life capacitor bank switch device for ultrahigh voltage engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036216.8A CN104715965A (en) | 2015-01-26 | 2015-01-26 | Long-electrical-life capacitor bank switch device for ultrahigh voltage engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104715965A true CN104715965A (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510036216.8A Pending CN104715965A (en) | 2015-01-26 | 2015-01-26 | Long-electrical-life capacitor bank switch device for ultrahigh voltage engineering |
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| CN (1) | CN104715965A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098458A (en) * | 2016-06-24 | 2016-11-09 | 河南平芝高压开关有限公司 | Anti-loose structure and use contact assembly and the chopper of this structure |
| CN113571376A (en) * | 2020-12-09 | 2021-10-29 | 国网上海市电力公司 | Double-acting arc extinguishing chamber |
-
2015
- 2015-01-26 CN CN201510036216.8A patent/CN104715965A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098458A (en) * | 2016-06-24 | 2016-11-09 | 河南平芝高压开关有限公司 | Anti-loose structure and use contact assembly and the chopper of this structure |
| CN106098458B (en) * | 2016-06-24 | 2019-03-12 | 河南平芝高压开关有限公司 | Anti-loose structure and the contact assembly and breaker for using the structure |
| CN113571376A (en) * | 2020-12-09 | 2021-10-29 | 国网上海市电力公司 | Double-acting arc extinguishing chamber |
| CN113571376B (en) * | 2020-12-09 | 2023-12-15 | 国网上海市电力公司 | Double-action arc extinguishing chamber |
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Application publication date: 20150617 |