CN213878007U - Ablation-resistant circuit breaker arc extinguish chamber capable of quickly extinguishing arc and circuit breaker - Google Patents
Ablation-resistant circuit breaker arc extinguish chamber capable of quickly extinguishing arc and circuit breaker Download PDFInfo
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- CN213878007U CN213878007U CN202120157256.9U CN202120157256U CN213878007U CN 213878007 U CN213878007 U CN 213878007U CN 202120157256 U CN202120157256 U CN 202120157256U CN 213878007 U CN213878007 U CN 213878007U
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- 238000002679 ablation Methods 0.000 title claims abstract description 18
- 230000003068 static effect Effects 0.000 claims abstract description 39
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 19
- 229910052573 porcelain Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000926 separation method Methods 0.000 abstract description 7
- 238000007664 blowing Methods 0.000 abstract description 5
- 238000010891 electric arc Methods 0.000 description 9
- 238000004880 explosion Methods 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
The application provides a circuit breaker arc extinguish chamber and a circuit breaker with ablation resistance and rapid arc extinguishing, wherein the arc extinguish chamber comprises a moving contact and a static contact which are arranged inside a cavity of the arc extinguish chamber; the surface of the contact point of the static contact is covered with a graphene material; the contact end of the moving contact and the static contact is provided with a V-shaped structure nozzle, the opening of the V-shaped structure nozzle faces one side of the static contact, and arc extinguishing gas is sprayed out of the V-shaped structure nozzle. When the contacts are separated, electric arcs among the contacts generate high temperature to ablate the surface material and structure of the contacts, so that the surface of the contact point of the static contact is coated with the graphene material, and the graphene has excellent high-temperature resistance and conductivity, can improve the closing times of the contacts and prolong the service life of the circuit breaker; meanwhile, the contact end of the moving contact and the static contact is set to be a nozzle with a V-shaped structure, so that the accelerated speed of the arc extinguishing gas is greatly increased, the longitudinal blowing effect of arc extinguishing is enhanced, electric arcs are extinguished in a short time, and the arc extinguishing process caused by contact separation is accelerated.
Description
Technical Field
The application relates to the technical field of electromechanical equipment, in particular to an ablation-resistant arc extinguishing chamber of a circuit breaker and a circuit breaker.
Background
With the rapid development of remote transmission in China, the application scale of a high-voltage circuit breaker which is installed in a line and used for disconnecting or closing the line is also continuously expanded. When the circuit breaker is in a circuit cutting state, due to the action of high voltage, electric arc can be pulled between the movable contact and the static contact at the separation moment of the movable contact and the static contact, the generated electric arc can generate very high temperature, the surface material of the contact is ablated, and the original electric conductivity of the contact is damaged.
Meanwhile, the arc has the characteristic of difficult extinction, and the common arc extinction method is to utilize insulating gas to longitudinally blow out the arc at the zero crossing point of the alternating current; however, this method is on the one hand too long and does not guarantee that the arc does not reignite; on the other hand, the operation overvoltage inside the circuit breaker is in direct proportion to the reignition frequency of the electric arc, and after the electric arc reignites, the generated operation overvoltage can break down the insulation of the electric equipment on the circuit, so that the original working performance of the electric equipment is lost, and the operation reliability of the electric power system is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The application provides a circuit breaker explosion chamber and circuit breaker of quick arc extinguishing of resistant ablation to solve traditional arc extinguishing method consuming time overlength, and can not guarantee the not reignition of electric arc, seriously influence the problem of the reliability of electric power system operation.
The technical scheme adopted by the application for solving the technical problems is as follows:
an anti-ablation and rapid arc extinguishing chamber of a circuit breaker comprises a moving contact and a static contact which are arranged in a chamber body of the arc extinguishing chamber;
the surface of the contact point of the static contact is covered with a graphene material;
the contact end of the moving contact and the static contact is provided with a V-shaped structure nozzle, the opening of the V-shaped structure nozzle faces one side of the static contact, and arc extinguishing gas is sprayed out from the V-shaped structure nozzle.
Optionally, the thickness of the graphene material cover is 500 mm.
Optionally, the V-shaped structure nozzle is long, narrow, sharp and has an arc structure with a certain radian.
Optionally, an outer porcelain bushing of an umbrella skirt structure is arranged outside the arc extinguish chamber.
Optionally, the moving contact is connected to the exterior of the arc extinguish chamber through a conductive rod, and the conductive rod is used for operating the moving contact to reciprocate towards the stationary contact end.
Optionally, the arc extinguishing chamber further includes a pneumatic chamber, and the pneumatic chamber is disposed at one end of the moving contact.
A circuit breaker comprises an arc extinguish chamber, wherein the arc extinguish chamber is any one of the arc extinguish chambers.
The technical scheme provided by the application comprises the following beneficial technical effects:
the application provides an anti-ablation fast arc-extinguishing chamber of a circuit breaker and the circuit breaker, wherein the arc-extinguishing chamber comprises a moving contact and a static contact which are arranged in a cavity of the arc-extinguishing chamber; the surface of the contact point of the static contact is covered with a graphene material; the contact end of the moving contact and the static contact is provided with a V-shaped structure nozzle, the opening of the V-shaped structure nozzle faces one side of the static contact, and arc extinguishing gas is sprayed out from the V-shaped structure nozzle. When the contacts are separated, electric arcs among the contacts generate high temperature to ablate the surface material and structure of the contacts, so that the surface of the contact point of the static contact is coated with the graphene material, and the graphene has excellent high-temperature resistance and conductivity, can improve the closing times of the contacts and prolong the service life of the circuit breaker; meanwhile, the contact end of the moving contact and the static contact is set to be a nozzle with a V-shaped structure, so that the accelerated speed of the arc extinguishing gas is greatly increased, the longitudinal blowing effect of arc extinguishing is enhanced, electric arcs are extinguished in a short time, and the arc extinguishing process caused by contact separation is accelerated.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of an arc extinguishing chamber of a circuit breaker with ablation resistance and rapid arc extinguishing provided in an embodiment of the present application.
Description of reference numerals:
1-external porcelain bushing, 2-moving contact, 3-static contact, 4-static contact point, 5-V type structure nozzle, 6-air compression chamber and 7-conducting rod.
Detailed Description
In order to make the technical solutions in the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; it is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic cross-sectional view of an arc extinguishing chamber of a circuit breaker with ablation resistance and rapid arc extinguishing according to an embodiment of the present disclosure.
As shown in fig. 1, the circuit breaker arc extinguish chamber capable of resisting ablation and rapidly extinguishing arc provided by the embodiment of the application comprises a moving contact 2 and a fixed contact 3 which are arranged inside an arc extinguish chamber cavity, specifically, the arc extinguish chamber is a self-energy arc extinguish chamber, and the moving contact 2 and the fixed contact 3 are arranged oppositely.
The surface of the static contact point 4 is covered with a graphene material;
the contact end of the moving contact 2 and the static contact 3 is provided with a V-shaped structure nozzle 5, the opening of the V-shaped structure nozzle 5 faces one side of the static contact 3, and arc extinguishing gas is sprayed out from the V-shaped structure nozzle 5.
When the contacts are separated, electric arcs among the contacts generate high temperature to ablate the surface material and structure of the contacts, so that the surface of the static contact point 4 is coated with the graphene material, and the graphene has excellent high-temperature resistance and conductivity, can improve the closing times of the contacts and prolong the service life of the circuit breaker; meanwhile, the contact ends of the moving contact 2 and the static contact 3 are arranged to be of a V-shaped structure nozzle 5 structure, so that the accelerated speed of arc extinguishing gas is greatly increased, the longitudinal blowing effect of arc extinguishing is enhanced, electric arcs are extinguished in a short time, and the arc extinguishing process caused by contact separation is accelerated.
The contact point 4 of the static contact is coated with graphene, and the contact end of the movable contact 2 and the static contact 3 is arranged to be the nozzle 5 with the V-shaped structure, so that the problems that the traditional arc extinguishing method consumes too long time and can not ensure that the electric arc is not re-ignited are effectively solved; on the other hand, the operation overvoltage inside the circuit breaker is in direct proportion to the reignition frequency of the electric arc, and after the electric arc reignites, the generated operation overvoltage can break down the insulation of the electric equipment on the circuit, so that the original working performance of the electric equipment is lost, and the reliability of the operation of the electric power system is seriously influenced.
As an embodiment, the thickness of the graphene material cover is 500mm, because when the contacts are separated, electric arcs between the contacts can generate high temperature to ablate the surface materials and the structure of the contacts, and the graphene has excellent high temperature resistance and conductivity, so that the closing times of the contacts can be increased, and the service life of the circuit breaker can be prolonged.
V type structure spout 5 is long and narrow closed angle to have the arc structure of certain radian, through the optimization effect of structure, increase substantially the gaseous spun acceleration of arc extinguishing, make the vertical blowing effect of arc extinguishing strengthened, electric arc is extinguished in the short time, has accelerated the process of quenching because of the contact separation produces.
When the high-voltage cut-off device is used, the arc extinguish chamber is made into the structure and is arranged at a specified position to be used as a high-voltage cut-off device of a high-voltage transmission line. At the moment, due to the special nozzle structure in the breaker, electric arcs generated by opening of the breaker can be blown out in a short time, and due to the graphene coated on the surface of the static contact 3, the high-temperature ablation effect of the electric arcs on the contact is weakened, so that the operation reliability of the breaker is guaranteed by accelerating arc quenching, and the service life of the breaker is prolonged.
In addition, the explosion chamber outside is provided with outer insulator 1 of full skirt structure, and outer insulator 1 adopts full skirt structure, and with whole circuit breaker explosion chamber cover isolated, the effective creepage distance of increase avoids external environment to cause the circuit breaker surface to cause the flashover to discharge.
The moving contact 2 is connected with the outside of the arc extinguish chamber through a conducting rod 7, and the conducting rod 7 is used for operating the moving contact 2 to reciprocate towards the end of the fixed contact 3. The arc extinguish chamber is internally provided with a moving contact 2 which is operated in a conductive rod 7 mode and can move up and down, and the moving contact 2 extends to a static contact 3 under the normal condition and is contacted with the static contact, so that the normal operation conductivity is ensured; when the switch needs to be disconnected, the guide rod operates the moving contact 2 to be separated from the static contact 3, and the function of isolating and powering off is achieved.
Still include plenum chamber 6 in the arc extinguishing chamber, plenum chamber 6 sets up the one end of moving contact 2, and the arc extinguishing gas storage here during normal combined floodgate for moving contact 22 separation for the atmospheric pressure in plenum chamber 6 changes, and atmospheric pressure makes the blowout arc extinguishing of arc extinguishing gas.
A circuit breaker comprises an arc extinguish chamber, wherein the arc extinguish chamber is any one of the arc extinguish chambers. The foregoing describes a specific structure of the arc-extinguishing chamber, and the circuit breaker provided in this section includes the arc-extinguishing chamber, and also has the technical effects described above.
In summary, the embodiment of the application provides an anti-ablation fast arc-extinguishing chamber of a circuit breaker and the circuit breaker, wherein the arc-extinguishing chamber comprises a moving contact 2 and a static contact 3 which are arranged inside a cavity of the arc-extinguishing chamber; the surface of the static contact point 4 is covered with a graphene material; the contact end of the moving contact 2 and the static contact 3 is provided with a V-shaped structure nozzle 5, the opening of the V-shaped structure nozzle 5 faces one side of the static contact 3, and arc extinguishing gas is sprayed out from the V-shaped structure nozzle 5. When the contacts are separated, electric arcs among the contacts generate high temperature to ablate the surface material and structure of the contacts, so that the surface of the static contact point 4 is coated with the graphene material, and the graphene has excellent high-temperature resistance and conductivity, can improve the closing times of the contacts and prolong the service life of the circuit breaker; meanwhile, the contact ends of the moving contact 2 and the static contact 3 are arranged to be the V-shaped structure nozzle 5, so that the accelerated speed of the arc extinguishing gas is greatly increased, the longitudinal blowing effect of arc extinguishing is enhanced, electric arcs are extinguished in a short time, and the arc extinguishing process caused by contact separation is accelerated.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
It will be understood that the present application is not limited to what has been described above and shown in the accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (7)
1. An anti-ablation and rapid arc extinguishing chamber of a circuit breaker is characterized by comprising a moving contact and a static contact which are arranged in a chamber body of the arc extinguishing chamber;
the surface of the contact point of the static contact is covered with a graphene material;
the contact end of the moving contact and the static contact is provided with a V-shaped structure nozzle, the opening of the V-shaped structure nozzle faces one side of the static contact, and arc extinguishing gas is sprayed out from the V-shaped structure nozzle.
2. The ablation resistant rapid arc extinguishing circuit breaker arc chute according to claim 1, wherein the graphene material coating has a thickness of 500 mm.
3. The ablation resistant rapid arc extinguishing circuit breaker arc chute of claim 1 wherein the V-shaped configuration of the spout is narrow and sharp and has an arcuate configuration with a certain arc.
4. The ablation-resistant rapid arc extinguishing circuit breaker arc extinguishing chamber according to claim 1, characterized in that an outer porcelain bushing of a shed structure is arranged outside the arc extinguishing chamber.
5. The ablation-resistant rapid arc extinguishing chamber of a circuit breaker according to claim 1, wherein the movable contact is externally connected to the arc extinguishing chamber through a conductive rod, and the conductive rod is used for operating the movable contact to reciprocate toward the stationary contact end.
6. The arc extinguish chamber of a circuit breaker for ablation-resistant rapid arc extinguishing according to claim 1, further comprising a plenum chamber in the arc extinguish chamber, wherein the plenum chamber is arranged at one end of the movable contact.
7. A circuit breaker comprising an arc chute, characterized in that the arc chute is as claimed in any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120157256.9U CN213878007U (en) | 2021-01-20 | 2021-01-20 | Ablation-resistant circuit breaker arc extinguish chamber capable of quickly extinguishing arc and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120157256.9U CN213878007U (en) | 2021-01-20 | 2021-01-20 | Ablation-resistant circuit breaker arc extinguish chamber capable of quickly extinguishing arc and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213878007U true CN213878007U (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120157256.9U Active CN213878007U (en) | 2021-01-20 | 2021-01-20 | Ablation-resistant circuit breaker arc extinguish chamber capable of quickly extinguishing arc and circuit breaker |
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| CN (1) | CN213878007U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114758921A (en) * | 2021-12-23 | 2022-07-15 | 平高集团有限公司 | Arc extinguish chamber and circuit breaker using same |
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2021
- 2021-01-20 CN CN202120157256.9U patent/CN213878007U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114758921A (en) * | 2021-12-23 | 2022-07-15 | 平高集团有限公司 | Arc extinguish chamber and circuit breaker using same |
| CN114758921B (en) * | 2021-12-23 | 2024-03-26 | 平高集团有限公司 | Explosion chamber and use circuit breaker of this explosion chamber |
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