CN2509702Y - Sulfur hexafluoride breaker arc-chutes - Google Patents
Sulfur hexafluoride breaker arc-chutes Download PDFInfo
- Publication number
- CN2509702Y CN2509702Y CN 01253129 CN01253129U CN2509702Y CN 2509702 Y CN2509702 Y CN 2509702Y CN 01253129 CN01253129 CN 01253129 CN 01253129 U CN01253129 U CN 01253129U CN 2509702 Y CN2509702 Y CN 2509702Y
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- contact
- arc
- chamber
- base component
- moving
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- Circuit Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to an arc extinguish chamber of a self-blowing style hexafluoride sulfur circuit breaker. The utility model includes a fixed contact component, a movable contact component, a base component, a sprayer and a porcelain bushing, wherein the movable contact component is disposed on the upper portion of the base component, the sprayer is arranged on the upper portion of the movable contact component, the fixed contact component is disposed on the upper potion of the sprayer, and the porcelain bushing is sleeved on the base component and is fixedly connected with the base component via seal. The characteristics of the utility model are that the integration of the main fixed contact is in a tube structure, holes are disposed at the center of a fixed arc contact, the sprayer is of lengthened shape, the upper portion of the sprayer is provided with an air-inducing chamber arranged, an arc chamber is arranged on the middle portion and an expanding chamber is arranged on the rear portion. A middle contact, disposed in tying-style, is composed of a contact, a pulling spring and a screen shield. The pulling spring is arranged in a slot which is disposed on the upper-outside of the contact, and the screen shield is mounted on the outside of the contact. The utility model has novel and simple structure, excellent arc extinguishing property, reliable movement and long durability.
Description
Technical field
The utility model relates to a kind of self energy air-sweeping type SF 6 arc-extinguishing chamber of circuit breaker that is installed in the sulfur hexafluoride breaker.
Background technology
Existing a kind of arc-extinguishing chamber of circuit breaker comprises: fixed contact parts, moving contact part, base component, nozzle, insulator, and described fixed contact parts comprise: cover plate, upper connecting terminal, absorber, quiet main contact, quiet arc contact; Described moving contact part comprises: moving main contact, moving arcing contact, cylinder, pull bar, connecting piece; Described base component comprises: middle contact, piston, bearing, bottom base; Be provided with moving contact part on base component, be provided with nozzle above moving contact part, the fixed contact parts are located on the nozzle, and insulator is sleeved on the base component, are fastenedly connected with its sealing.Because in the fixed contact parts, quiet main contact directly is welded in the quiet arc contact, and is yielding, poor electric conductivity; The quiet arc contact directly is fastened on the pedestal, and structure is long, and is yielding, and the quiet arc contact is a blind hole, and arc energy is big, the easy scaling loss of contact, and arc-rupturing capacity is poor; Jet hole is short, and guidance quality is poor, when electric arc blows out, blows to main contact easily, makes contact burning; Middle contact adds technology and requires height, electric conductivity instability.
Summary of the invention
The purpose of this utility model is: solve the defective of existing arc-extinguishing chamber of circuit breaker, a kind of self energy air-blowing function that has is provided, arc extinguishing is rapid, the SF 6 arc-extinguishing chamber of circuit breaker of reliable in action.
The purpose of this utility model is such realization: a kind of self energy air-sweeping type SF 6 arc-extinguishing chamber of circuit breaker comprises: fixed contact parts, moving contact part, base component, nozzle, insulator, described fixed contact parts comprise: cover plate, upper connecting terminal, absorber, quiet main contact, quiet arc contact; Described moving contact part comprises: moving main contact, moving arcing contact, cylinder, pull bar, connecting piece; Described base component comprises: middle contact, piston, bearing, bottom base; Be provided with moving contact part above base component, be provided with nozzle above moving contact part, the fixed contact parts are located at the nozzle top, and insulator is sleeved on the base component, is fastenedly connected with its sealing.Be characterized in: the whole core structure that adopts of described quiet main contact; Be provided with the hole in the middle of the described quiet arc contact, described nozzle is made as extended type, and its inner chamber top is provided with the air guide chamber, and the middle part is provided with revolves arc chamber, and the rear portion is provided with expanding chamber; Contact is made as cluster in the middle of described.
Above-mentioned self energy air-sweeping type SF 6 arc-extinguishing chamber of circuit breaker, wherein: described strap-on middle contact comprises: contact, extension spring, radome, described contact upper outside is provided with groove, and described extension spring is located in the groove, and described radome is located at the contact outside.
Because the utility model has adopted above technical scheme, the whole core structure that adopts of quiet main contact, good rigidly, conductive contact surfaces is long-pending big, and shared volume is little, and it is more that inside contains sulfur hexafluoride gas, and thermal diffusivity is good; Because the quiet arc contact screws with the direct screw thread of quiet main contact and is connected, and is simple in structure, the maintain and replace contact is convenient, and contact performance is good, and its length is short not yielding; Owing to be provided with the hole in the middle of the quiet arc contact, effectively reduced arc energy, be convenient to electric arc and extinguish rapidly; Owing to be provided with air-flow air guide chamber at the nozzle chambers internal upper part, the middle part is provided with revolves arc chamber, expanding chamber is arranged at the bottom, when separating brake, produces electric arc, make sulfur hexafluoride gas produce high pressure by arc energy, reach and utilize the self energy purpose, pilot arc is upwards discharged simultaneously, protects quiet main contact to be difficult for burning,, the sulphur hexafluoride air-flow is had good guide effect; Because middle contact is made as cluster.Be provided with extension spring in middle contact pocket, the outside is provided with radome, and contact is reliable, and contact pressure meets design requirement, and conducts electricity very well.
Description of drawings
Concrete structure of the present utility model is further provided by following examples and accompanying drawing thereof.
Fig. 1 is the utility model self energy air-sweeping type SF 6 arc-extinguishing chamber of circuit breaker structural representation.
Fig. 2 is the middle structure of contact terminal schematic diagram of the utility model self energy air-sweeping type SF 6 arc-extinguishing chamber of circuit breaker.
Embodiment
Shown in accompanying drawing 1, a kind of self energy air-sweeping type SF 6 arc-extinguishing chamber of circuit breaker comprises fixed contact parts 1, moving contact part 2, base component 3, nozzle 4, insulator 5.Described fixed contact parts 1 comprise cover plate 11, upper connecting terminal 12, absorber 13, quiet main contact 14, quiet arc contact 15.The quiet main contact 14 whole core structures that adopt; Its contact 141 and the 142 whole compression mouldings of contact matrix; Perforate 151 in the middle of quiet arc contact 15.Quiet arc contact 15 is connected with quiet main contact 14 screw threads for fastening, after its combination, be connected on the upper connecting terminal 12, the top of quiet main contact 14 is connected with upper connecting terminal 12 usefulness bolted, absorber 13 is placed on the top of quiet main contact 14, cover plate 11 is covered port at upper connecting terminal 12, be fastenedly connected with bolt seal, assembling constitutes fixed contact parts 1.
Described moving contact part 2 comprises: moving arcing contact 21, moving main contact 22, cylinder 23, pull bar 24, connecting piece 25.Pull bar 24 tops screw with connector 25 employing screw threads and are connected, screw by screw thread at connector 25 tops and moving main contact 22 and to be connected, screw by screw thread at connector 25 middle parts and moving arcing contact 21 and to be connected, screw by screw thread at connector 25 bottoms and cylinder 23 and to be connected, assembling constitutes moving contact part 2.
Described base component 3 comprises: middle contact 31, piston 32, bearing 33, bottom base 34, please cooperate referring to shown in Figure 2, contact comprises in the middle of described: contact 311, extension spring 312, radome 313, contact 311 is connected on the bearing 33, in the contact 311 upper outside grooves extension spring 312 is housed, at contact outer surface cover cap radome 313, radome is riveted on the contact 311.Piston 32 is located at the inboard of bearing 33, screws by tap with bearing 33 to be connected, and bearing 33 is placed on the bottom base 34, connects with bolted, and assembling constitutes base component 3.
Moving contact part 2 is passed middle contact 31, be placed on the bottom base 34, cylinder 23 is connected with middle contact 31 sliding contacts, slip should be flexible.
Described nozzle 4 is made as extended type, and its internal upper part is provided with air-flow air guide chamber 41, and the middle part is provided with revolves arc chamber 42, and the rear portion is provided with expanding chamber 43, adopts screw threads for fastening to be connected with moving main contact.Drum type brake insulator 5 is connected from being inserted in bottom base 34 usefulness bolted; Again fixed contact parts 1 are inserted from the upper end of insulator, be sleeved on outside the nozzle 4, upper connecting terminal 12 and insulator 5 are fastened and connected with bolt.In insulator, charge into sulfur hexafluoride gas.
Arc control device of the present utility model adopt single pressure type, become open apart from, blow the self-energy quenching arc principle inside and outside two-way: current direction during combined floodgate, electric current flows into through upper connecting terminal 12, and---------to connector 25---to middle contact 31---to bearing 33---is at last by bottom base 34 outputs to moving main contact 22 to quiet main contact 14.
During separating brake, the arc control device course of work is, pull bar moves down main contact through the operating mechanism pulling of circuit breaker, moves main contact and separates with quiet main contact, and electric current passes through through quiet arc contact, moving arcing contact holding current;
The moving arcing contact parts continue to move down, moving arcing contact and quiet arc contact are separated, produce electric arc, because cylinder moves downward with moving arcing contact, sulfur hexafluoride gas increased pressure in the cylinder, when dynamic and static arcing contact separated, the high pressure sulfur hexafluoride gas penetration arc core in the cylinder was formed centrally in dynamic and static arcing contact downwards and makes progress and blows in two-way.
The arc blow-out ability of blowing in two-way is not strong, and purpose is not electricity will be touched blowing-out, but the arc root is controlled at the inner chamber of dynamic and static arcing contact, and makes that the electric arc root temperature is unlikely to rise too high, and burns contact.
In continuing the separating brake process, when nozzle throat is deviate from the quiet arc contact, the air-flow that discharges forms along the electric arc surface upwards, generation is by the outwards vertical effect of blowing in air guide chamber, particularly revolving arc chamber, its cross section minimum, air velocity can reach at a high speed, little owing to revolving the arc chamber cross section simultaneously, near the arc current maximum, arc temperature is high, and the high pressure sulfur hexafluoride gas in the cylinder can not pass through this place fast, and formation hot plugging plug effect, strengthened the air-blowing effect before and after the current over-zero, thereby improved arc extinction performance, when electric current natural zero-crossing moment, the arc gap medium recovers rapidly, makes arc extinction.
Behind arc extinction between the dynamic and static arcing contact, moving arcing contact also will continue to separating brake direction motion LAP, and the air-blowing effect will make between fracture dielectric strength further recover, until the separating brake position.
In the making process, to combined floodgate direction motion, outside sulfur hexafluoride gas charges into rapidly in the cylinder by piston cylinder with pull bar, for separating brake is once more got ready.
The utility model is applicable to deciliter rated current in the electric power system, in disengagement failure electric current and the conversion line, and rapid arc extinguishing when realization is cut-off the logical circuit breaker of protecting of power transmission and transformation system, reliable in action.
The utility model arc extinguishing amount is used more economical reliable in the 126kV/145kV sulfur hexafluoride breaker, and the mechanical movement that short required energy has been reduced to switch contact is opened in short circuit, and its arc extinction performance is good, and novel structure is simple, long service life.
Claims (2)
1, a kind of self energy air-sweeping type SF 6 arc-extinguishing chamber of circuit breaker comprises: fixed contact parts, moving contact part, base component, nozzle, insulator, and described fixed contact parts comprise: cover plate, upper connecting terminal, absorber, quiet main contact, quiet arc contact; Described moving contact part comprises: moving main contact, moving arcing contact, cylinder, pull bar, connecting piece; Described base component comprises: middle contact, piston, bearing, bottom base; Be provided with moving contact part above base component, be provided with nozzle above moving contact part, the fixed contact parts are located at the nozzle top, and insulator is sleeved on the base component, is fastenedly connected with its sealing; It is characterized in that the whole core structure that adopts of described quiet main contact; Be provided with the hole in the middle of the described quiet arc contact, described nozzle is made as extended type, and its inner chamber top is provided with the air guide chamber, and the middle part is provided with revolves arc chamber, and the rear portion is provided with expanding chamber; Contact is made as cluster in the middle of described.
2, self energy air-sweeping type SF 6 arc-extinguishing chamber of circuit breaker according to claim 1, it is characterized in that, described strap-on middle contact comprises: contact, extension spring, radome, described contact upper outside is provided with groove, described extension spring is located in the groove, and described radome is located at the contact outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01253129 CN2509702Y (en) | 2001-08-17 | 2001-08-17 | Sulfur hexafluoride breaker arc-chutes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01253129 CN2509702Y (en) | 2001-08-17 | 2001-08-17 | Sulfur hexafluoride breaker arc-chutes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2509702Y true CN2509702Y (en) | 2002-09-04 |
Family
ID=33662686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01253129 Expired - Fee Related CN2509702Y (en) | 2001-08-17 | 2001-08-17 | Sulfur hexafluoride breaker arc-chutes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2509702Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102177565B (en) * | 2008-10-09 | 2013-11-27 | 阿尔斯通技术有限公司 | Cutoff chamber for high-voltage circuit breaker with improved arc quenching |
-
2001
- 2001-08-17 CN CN 01253129 patent/CN2509702Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102177565B (en) * | 2008-10-09 | 2013-11-27 | 阿尔斯通技术有限公司 | Cutoff chamber for high-voltage circuit breaker with improved arc quenching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020904 Termination date: 20100817 |