CN102938349B - High-voltage gas circuit breaker - Google Patents
High-voltage gas circuit breaker Download PDFInfo
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- CN102938349B CN102938349B CN201210445388.7A CN201210445388A CN102938349B CN 102938349 B CN102938349 B CN 102938349B CN 201210445388 A CN201210445388 A CN 201210445388A CN 102938349 B CN102938349 B CN 102938349B
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- arc contact
- blocking ring
- main injection
- static arc
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Abstract
The invention relates to a high-voltage circuit breaker with a blocking ring contact and a vortex generator and belongs to the field of high-voltage electrical technology. The high-voltage circuit breaker comprises a static arc contact, a main spraying nozzle, an auxiliary spraying nozzle, a dynamic arc contact, a blocking ring, the vortex generator and a piston, wherein the main spraying nozzle, the auxiliary spraying nozzle, the dynamic arc contact and the vortex generator are respectively and fixedly connected with the piston to form an arc extinguishing chamber moving part which rightly faces to the static arc contact. The breaking of the arc extinguishing chamber moving part is achieved by means of the driving of a circuit breaker mechanism. A heating channel is formed between the main spraying nozzle and the auxiliary spraying nozzle. According to the high-voltage circuit breaker, the blocking ring contact is used for strengthening air blocking effect between the static arc contact and the main spraying nozzle during arcing, the vortex generator is used for generating swirling airflow to improve mixed effect of the airflow in an expansion chamber, and accordingly, breaking capability of the self-energy circuit breaker is improved.
Description
Technical field
What the present invention relates to is a kind of gas-break switch of high-voltage electrical apparatus technical field, especially a kind of gases at high pressure circuit breaker with blocking ring contact and eddy generator.
Background technology
Common primary cut-out, particularly self-blasting circuit breaker, depended on the heat heat expansion chamber of electric arc self, produce sufficiently high air pressure, then blown out by forcing functions by the electric arc between contact when current over-zero.Present most of high pressure self extinguishing type gas-break switch all adopts two jet passage design, and namely side take PTFE as the main injection jet passage of material, the passage that opposite side forms with moving arcing contact and PTFE subjet.Therefore, the design of gas channel is particularly important, particularly utilize arc burning and nozzle area formed blockage effect heat expansion chamber and strengthen current zero-crossing point time forced-convection heat transfer effect be main design principle.First, the formation of Arc choke effect needs the design in contact and jet size to coordinate.But in the design of binary channels arc control device, moving contact side and main injection jet side bear the effect of gas channel respectively, fixed contact, moving contact and main injection jet cooperation demand fulfillment mechanical structure dimensionally and the multiple requirements such as electric field, airflow field.
Common fixed contact is for waiting external diameter design, as Chinese patent literature CN101162663 publication date 2008-04-16, describe one " the reeded cyclone type nozzle high-pressure blowing circuit breakers of tool ", this technology includes piston, pneumatic cylinder, dynamic main contact, moving arcing contact, quiet main contact, static arc contact, moving arcing contact outer cover and spout, it is characterized in that in the airflow pipeline be jointly made up of spout and moving arcing contact outer cover, or be evenly arranged spiral groove vertically at internal surface of nozzle, or be evenly arranged spiral groove vertically at the outer cover outer surface of moving arcing contact, or be evenly arranged spiral groove vertically at internal surface of nozzle and the outer cover outer surface of moving arcing contact simultaneously, form Xuan Qi district, improve the arc extinguishing ability of gas-blast circuit breaker and improve breaking capacity.
But above-mentioned technology will weaken Arc choke effect when the gap of main injection jet internal diameter and fixed contact external diameter is larger, cause the leakage of air-flow before current over-zero, can reduce circuit breaker break performance; Its two, the inner air-flow mixed effect during arcing of expanding chamber has larger impact to connecting-disconnecting function, and the heat tunnel usually with smooth inner wall is unfavorable for the raising of air-flow mixed effect, thus affects the break performance of circuit breaker; Its three, although the reeded spout of tool also can make air-flow produce rotation effect, the flow resistance of air-flow can be increased, unfavorable to arc blow-out, and processing cost is higher, and can be corroded by high-temperature gas and act on decay.
Summary of the invention
The present invention is directed to prior art above shortcomings, a kind of gases at high pressure circuit breaker is proposed, blocking ring contact is utilized to strengthen between static arc contact and main injection jet during arcing the ponding of air-flow, utilize eddy generator to produce swirling eddy simultaneously and improve the melange effect of air-flow at expanding chamber, thus improve the connecting-disconnecting function of self-blasting circuit breaker.
The present invention is achieved by the following technical solutions, the present invention includes: static arc contact, main injection jet, subjet, moving arcing contact, eddy generator and piston, wherein: main injection jet, subjet, moving arcing contact and eddy generator are fixedly connected to form arc control device motion parts respectively also just to static arc contact with piston, this arc control device motion parts is driven by breaker mechanism and realizes interrupting process, forms heat tunnel in the middle of main injection jet and subjet.
Described static arc contact and main injection jet venturi inwall gap are more than or equal to 5mm.
Under the prerequisite not changing static arc contact external diameter, static arc contact is provided with the blocking ring in the gap for regulating the original external diameter of static arc contact and main injection jet inwall.
Described blocking ring adopts bolt to fix, weld or directly on static arc contact the mode such as integrated machine-shaping be arranged on static arc contact, the blocking external diameter of ring and the gap of main injection jet inner surface are less than 2mm and can not occur when closing a floodgate to collide with miscellaneous part to be as the criterion.
Described blocking ring is circulus, for equal diameter design makes it to coordinate with fixed contact to install inside it, and is smooth curved surface towards the surface of main injection jet side.
Described eddy generator is circulus, and its structure is fixed on expanding chamber inwall by fixing hole.
Described eddy generator is provided with several spoiler, and the axis direction of each spoiler and breaker mechanism is 0 ~ 45 °.
Advantage of the present invention: under guarantee moving arcing contact and static arc contact electrically coordinate requirement condition with machinery, improve Airflow obstruction ability during arcing, makes the pressure efficiency of building of expanding chamber be improved; After blocking ring leaves spout venturi, larger main injection jet internal diameter is utilized again to improve air flow rate; The gas that eddy generator can make to enter expanding chamber fully mixes due to the effect of whirlpool, and improves the turbulivity of air-flow when alternating current zero passage, thus strengthens arc blow-out ability; Blocking ring in the present invention and eddy generator are not vulnerable to the ablation of electric arc, and the electric life time is long.
Accompanying drawing explanation
Fig. 1 is this apparatus structure schematic diagram;
Fig. 2 is the local display of blocking ring, the axial installation site of eddy generator in circuit breaker;
Fig. 3 a is the schematic three dimensional views of eddy generator;
Fig. 3 b is the form that eddy generator is arranged on heat tunnel end;
Fig. 4 a is the three-dimensional assembling schematic diagram of static arc contact and blocking ring;
Fig. 4 b is the architectural feature schematic diagram of blocking ring;
In figure: 1 static arc contact, 2 main injection jets, 3 blocking ring, 4 subjet, 5 moving arcing contacts, 6 heat tunnels, 7 eddy generators, 8 expanding chambers, 9 pistons, 10 valve blocks, 11 plenum chambers, 12 spoilers, 13 fixing holes.
Embodiment
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figure 1, the present embodiment comprises: static arc contact 1, main injection jet 2, subjet 4, moving arcing contact 5, blocking ring 3, eddy generator 7 and piston 9, wherein: main injection jet 2, subjet 4, moving arcing contact 5 and eddy generator 7 are fixedly connected to form arc control device motion parts respectively also just to static arc contact 1 with piston 9, this arc control device motion parts is driven by breaker mechanism and realizes interrupting process, forms heat tunnel 6 in the middle of main injection jet 2 and subjet 4.
The inside diameter ranges of described main injection jet 2 venturi is 20mm-80mm; Preferred main injection jet 2 venturi internal diameter is 36mm,
Described static arc contact 1 external diametrical extent is 16mm-76mm; Be preferably 26mm,
Described static arc contact 1 is 5mm with main injection jet 2 venturi inwall gap.
In order to ensure that arc control device expanding chamber ability sets up elevated pressures, under the prerequisite not changing static arc contact external diameter, static arc contact 1 is provided with the blocking ring 3 in the gap for regulating the original external diameter of static arc contact 1 and main injection jet 2 inwall.
The outer diameter D 1 of described blocking ring 3 for 32mm, internal diameter D2 be 26mm;
Described blocking ring 3 is 10mm with the distance G of subjet under "on" position.
The length L of described blocking ring 3 is preferably 20mm;
Described blocking ring 3 adopts bolt to fix, weld or directly on static arc contact 1 mode such as integrated machine-shaping be arranged on static arc contact 1, the position of blocking ring 3 is to be less than 2mm with the gap of main injection jet 2 inner surface and can not to occur when closing a floodgate to collide with miscellaneous part to be as the criterion;
Described blocking ring 3 adopts high temperature resistant ablator to make;
Described blocking ring 3 is circulus, and for equal diameter design makes it to coordinate with fixed contact to install inside it, its surface towards main injection jet side is smooth curved surface, and end curvature R is preferably 6mm;
The radial width of described heat tunnel 6 is 8mm;
Described eddy generator 7 adopts refractory metal material and is specifically positioned at heat tunnel 6 end, and this eddy generator 7 is circulus, and its structure is fixed on expanding chamber 8 inwall by fixing hole 13;
Described eddy generator 7 is provided with 4 spoilers 12, and each spoiler 12 is 30 ° with the axis direction of breaker mechanism, and width is 10mm, is highly 6mm.
Claims (1)
1. one kind has the gases at high pressure circuit breaker of blocking ring contact and eddy generator, it is characterized in that, comprise: static arc contact, main injection jet, subjet, moving arcing contact, blocking ring, eddy generator and piston, wherein: main injection jet, subjet, moving arcing contact and eddy generator are fixedly connected to form arc control device motion parts respectively also just to static arc contact with piston, this arc control device motion parts is driven by breaker mechanism and realizes interrupting process, forms heat tunnel in the middle of main injection jet and subjet; Under the prerequisite not changing static arc contact external diameter, static arc contact is provided with the blocking ring in the gap for regulating the original external diameter of static arc contact and main injection jet inwall;
The internal diameter of the venturi of described main injection jet is 20mm-80mm; Described static arc contact external diameter is 16mm-76mm; Described static arc contact and main injection jet venturi inwall gap are more than or equal to 5mm; The radial width of described heat tunnel is 8mm-20mm;
The venturi internal diameter of described main injection jet is 36mm; Described static arc contact external diameter is 26mm;
Described blocking ring adopts bolt to fix, weld or directly on static arc contact the mode such as integrated machine-shaping be arranged on static arc contact, the position of blocking ring is to be less than 2mm with the gap of main injection jet inner surface and can not to occur when closing a floodgate to collide with miscellaneous part to be as the criterion;
Described blocking ring is that the high temperature resistant ablator of circulus is made, and for equal diameter design makes it to coordinate with fixed contact to install inside it, and is smooth curved surface towards the surface of main injection jet side;
The external diameter of described blocking ring is 32mm, internal diameter is 26mm, length is more than or equal to 10mm, and this blocking ring is 10mm with the distance of subjet under "on" position;
The end curvature of described smooth curved surface is 6mm;
Described eddy generator is that the refractory metal material of circulus is made and is specifically positioned at heat tunnel end, expanding chamber inwall is fixed on by fixing hole, this eddy generator is provided with several spoiler, and the axis direction of each spoiler and breaker mechanism is 0 ~ 45 °;
Described spoiler width is 10mm, is highly 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445388.7A CN102938349B (en) | 2012-11-08 | 2012-11-08 | High-voltage gas circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445388.7A CN102938349B (en) | 2012-11-08 | 2012-11-08 | High-voltage gas circuit breaker |
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| CN102938349A CN102938349A (en) | 2013-02-20 |
| CN102938349B true CN102938349B (en) | 2014-12-24 |
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| CN201210445388.7A Active CN102938349B (en) | 2012-11-08 | 2012-11-08 | High-voltage gas circuit breaker |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3261107A1 (en) * | 2016-06-20 | 2017-12-27 | ABB Schweiz AG | Gas-insulated low- or medium-voltage switch with swirling device |
| WO2018158440A1 (en) * | 2017-03-02 | 2018-09-07 | Abb Schweiz Ag | High-voltage circuit breaker with improved robustness |
| CN108766828A (en) * | 2018-06-04 | 2018-11-06 | 沈阳工业大学 | One kind being used for high pressure SF6Breaker carries the spout of cylindrical projection |
| CN108831791A (en) * | 2018-06-04 | 2018-11-16 | 沈阳工业大学 | One kind being used for high pressure SF6The screw-type spout of breaker |
| CN110112033A (en) * | 2019-05-08 | 2019-08-09 | 沈阳工业大学 | A kind of arcing contact and application method with auxiliary piston |
| CN110071012B (en) * | 2019-05-08 | 2024-02-06 | 沈阳工业大学 | Self-energy double-acting arc extinguishing chamber |
| CN110706966B (en) * | 2019-09-06 | 2021-10-12 | 平高集团有限公司 | Arc contact and circuit breaker |
| CN111725024B (en) * | 2020-06-29 | 2022-10-18 | 西安西电开关电气有限公司 | High-voltage circuit breaker and arc extinguish chamber thereof |
| CN112331517B (en) * | 2020-11-19 | 2023-06-27 | 西安西电开关电气有限公司 | Gas arc extinguishing chamber |
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| CN101162662A (en) * | 2007-10-22 | 2008-04-16 | 沈阳工业大学 | Cyclone type nozzle high-pressure blowing circuit breakers with blades |
| CN201570436U (en) * | 2009-06-09 | 2010-09-01 | 上海维埃姆电力科技有限公司 | Self-energy sulphur hexafluoride high-voltage circuit breaker |
| CN102364656A (en) * | 2011-10-13 | 2012-02-29 | 沈阳工业大学 | Gas rotation energy separation type high-voltage SF6 circuit breaker and energy separation method thereof |
| CN102543553A (en) * | 2011-12-09 | 2012-07-04 | 沈阳工业大学 | SF6 circuit-breaker gyromagnetic air compression type arc extinguishing chamber structure |
| CN203013625U (en) * | 2012-11-08 | 2013-06-19 | 上海思源高压开关有限公司 | High-voltage gas circuit breaker |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02100218A (en) * | 1988-10-06 | 1990-04-12 | Meidensha Corp | Buffer-type gas circuit breaker |
| JP5368150B2 (en) * | 2009-04-14 | 2013-12-18 | 三菱電機株式会社 | Switch |
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2012
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162662A (en) * | 2007-10-22 | 2008-04-16 | 沈阳工业大学 | Cyclone type nozzle high-pressure blowing circuit breakers with blades |
| CN201570436U (en) * | 2009-06-09 | 2010-09-01 | 上海维埃姆电力科技有限公司 | Self-energy sulphur hexafluoride high-voltage circuit breaker |
| CN102364656A (en) * | 2011-10-13 | 2012-02-29 | 沈阳工业大学 | Gas rotation energy separation type high-voltage SF6 circuit breaker and energy separation method thereof |
| CN102543553A (en) * | 2011-12-09 | 2012-07-04 | 沈阳工业大学 | SF6 circuit-breaker gyromagnetic air compression type arc extinguishing chamber structure |
| CN203013625U (en) * | 2012-11-08 | 2013-06-19 | 上海思源高压开关有限公司 | High-voltage gas circuit breaker |
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