CN204332821U - The high electrical endurance Capacitor banks switching device of superhigh pressure engineering - Google Patents
The high electrical endurance Capacitor banks switching device of superhigh pressure engineering Download PDFInfo
- Publication number
- CN204332821U CN204332821U CN201520047421.XU CN201520047421U CN204332821U CN 204332821 U CN204332821 U CN 204332821U CN 201520047421 U CN201520047421 U CN 201520047421U CN 204332821 U CN204332821 U CN 204332821U
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- contact
- arc
- spout
- control device
- assembling
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Abstract
The utility model discloses the high electrical endurance Capacitor banks switching device of a kind of superhigh pressure engineering, include the spring mechanism connected successively, support, pillar sleeve, pull bar and arc control device, described arc control device are enclosed in arc extinguishing sleeve pipe, described arc control device comprise moving contact assembling and fixed contact assembling, described moving contact assembling includes the lower terminal block connected successively, dynamic bearing, cylinder, dynamic main contact, moving arcing contact, spout, spout top is fixed contact assembling, fixed contact assembling comprises the static arc contact connected successively, quiet main contact, quiet bearing, upper wiring board, described cylinder is set to 2 air chambers, upper is thermal expansion room, the next plenum chamber, valve block is provided with between 2 air chambers, the larynx footpath of described spout is set to 29.8mm-30.8mm.Have simple and compact for structure, stable action is reliable, arc extinction performance is strong, the feature of long service 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, the secondary value of overvoltage directly causes greatly capacitor and other high-tension apparatus to damage.
Utility model content
The utility model, for above weak point, 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.
The utility model solves the technical scheme that its technical problem adopts: the high electrical endurance Capacitor banks switching device of a kind of superhigh pressure engineering, include the spring mechanism connected successively, support, pillar sleeve, pull bar and arc control device, described arc control device are enclosed in arc extinguishing sleeve pipe, described arc control device comprise moving contact assembling and fixed contact assembling, described moving contact assembling includes the lower terminal block connected successively, dynamic bearing, cylinder, dynamic main contact, moving arcing contact, spout, spout top is fixed contact assembling, fixed contact assembling comprises the static arc contact connected successively, quiet main contact, quiet bearing, upper wiring board, it is characterized in that: described cylinder is set to 2 air chambers, upper is thermal expansion room, the next plenum chamber, valve block is provided with between 2 air chambers, the larynx footpath of described spout is set to 29.8mm-30.8mm.
Described spring mechanism is designed to pairing brake spring.
The size in the utility model spout larynx footpath is set to 29.8mm-30.8mm, larger than original 27.9mm-28.1mm, avoid Arc choke, gas in expanding chamber has little time to be heated and is directly taken out of by plenum chamber gas, and the air velocity of now spout ejection is low, thus increases 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.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.
Accompanying drawing explanation
It is structural representation of the present utility model shown in Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail:
As shown be a specific embodiment of the present invention, include support 14, spring mechanism 15, pillar sleeve 13, pull bar 11, arc control device, arc control device comprise moving contact assembling, fixed contact assembles, arc extinguishing sleeve pipe 3, whole arc control device are all enclosed in arc extinguishing sleeve pipe 3, moving contact assembling comprises lower terminal block 12, dynamic bearing 10, cylinder 9, moving arcing contact 7, dynamic main contact 8, spout 6, dynamic bearing 10 is fixed on lower terminal block 12, dynamic bearing 10 indoor design ring shaped slot lays guide ring and spring touch finger, be dynamically connected with cylinder 9 formation through spring touch finger, cylinder 9 connects with dynamic main contact 7 and is fixed by spout 6, dynamic main contact 8 inside is provided with joint, moving arcing contact 7 is fixed on joint top,
Fixed contact assembling comprises quiet main contact 5, static arc contact 6, quiet bearing 4, upper wiring board 1, and quiet bearing 4 is fixed on upper wiring board 1, and quiet main contact 5 and static arc contact 6 are installed in quiet bearing 4 bottom;
Spring mechanism 15 is arranged on bottom pillar sleeve 13, and to be fixed on support 14, arc control device are fixed on insulation column upper flange.
Cylinder 9 is 2 air chambers structure, and top is divided into thermal expansion room, and bottom is divided into plenum chamber plenum chamber, is provided with valve block between 2 air chambers, and during separating brake, valve block is opened, and during combined floodgate, valve block closes;
Spout 6 larynx footpath is designed for large scale, is specifically set to 29.8mm-30.8mm, and by each calculation of parameter of electric arc, design larynx footpath size, reduces small area analysis Arc choke as far as possible, reduce air-blowing speed.
Spring mechanism 15 is designed to pairing brake spring, overstriking sluice separating spring structure, improves splitting or integrating lock speed.
Arc control device are large opening structure, and designed sound main contact is all cylindrical structure, strengthen fillet design, avoid point discharge, calculate acquisition the best open distance by analysis of electric field.
When high electrical endurance Capacitor banks switching device closes a floodgate, the switching-in spring of spring mechanism releases energy, and drives dynamic main contact up to move, first makes sound arcing contact contact, then sound main contact contact, realize switching device and close a floodgate through pull bar; During separating brake, the tripping spring of spring mechanism releases energy, and drive dynamic main contact down to move through pull bar, first make sound main contact be separated, then sound arcing contact is separated, and realizes switching device separating brake.
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 receipts and punctures 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 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 (2)
1. the high electrical endurance Capacitor banks switching device of superhigh pressure engineering, include the spring mechanism connected successively, support, pillar sleeve, pull bar and arc control device, described arc control device are enclosed in arc extinguishing sleeve pipe, described arc control device comprise moving contact assembling and fixed contact assembling, described moving contact assembling includes the lower terminal block connected successively, dynamic bearing, cylinder, dynamic main contact, moving arcing contact, spout, spout top is fixed contact assembling, fixed contact assembling comprises the static arc contact connected successively, quiet main contact, quiet bearing, upper wiring board, it is characterized in that: described cylinder is set to 2 air chambers, upper is thermal expansion room, the next plenum chamber, valve block is provided with between 2 air chambers, the larynx footpath of described spout is set to 29.8mm-30.8mm.
2. the high electrical endurance Capacitor banks switching device of superhigh pressure engineering according to claim 1, described spring mechanism is designed to pairing brake spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520047421.XU CN204332821U (en) | 2015-01-23 | 2015-01-23 | The high electrical endurance Capacitor banks switching device of superhigh pressure engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520047421.XU CN204332821U (en) | 2015-01-23 | 2015-01-23 | The high electrical endurance Capacitor banks switching device of superhigh pressure engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204332821U true CN204332821U (en) | 2015-05-13 |
Family
ID=53169147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520047421.XU Expired - Fee Related CN204332821U (en) | 2015-01-23 | 2015-01-23 | The high electrical endurance Capacitor banks switching device of superhigh pressure engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204332821U (en) |
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2015
- 2015-01-23 CN CN201520047421.XU patent/CN204332821U/en not_active Expired - Fee Related
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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: 20150513 Termination date: 20160123 |
|
| EXPY | Termination of patent right or utility model |