CN217182130U - Static contact arc extinguishing module of circuit breaker - Google Patents
Static contact arc extinguishing module of circuit breaker Download PDFInfo
- Publication number
- CN217182130U CN217182130U CN202220883142.7U CN202220883142U CN217182130U CN 217182130 U CN217182130 U CN 217182130U CN 202220883142 U CN202220883142 U CN 202220883142U CN 217182130 U CN217182130 U CN 217182130U
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- arc
- arc extinguishing
- contact
- static contact
- circuit breaker
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Abstract
The utility model relates to a static contact arc extinguishing module of circuit breaker, including the static contact, set up the arc extinguishing subassembly on the static contact, the arc extinguishing subassembly include flash barrier, explosion chamber, static contact one end have the contact site that extends in the flash barrier and be the U type, be provided with the stationary contact on the afterbody of contact site, the explosion chamber shroud on the contact site, and be provided with the through-hole of intercommunication between stationary contact and explosion chamber on the contact site, the flash barrier on correspond the below department of stationary contact and be provided with the magnetic conduction piece. The utility model has the advantages of simple structure, dependable performance are stable in performance, the assembly is convenient, can effectively prolong circuit breaker life, improve the circuit breaker breaking capacity.
Description
Technical Field
The utility model relates to a circuit breaker technical field, concretely relates to static contact arc extinguishing module of circuit breaker.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition for a predetermined time. The circuit breaker has overload, short circuit and under-voltage protection functions, can protect lines and power supply equipment from being damaged, and can protect fire hazards possibly caused by long-term grounding faults which cannot be detected by overcurrent protection. Moulded case circuit breaker includes plastic housing, operating device, moving contact, static contact, arc extinguishing system, and current moulded case circuit breaker's arc extinguishing system structural design is unreasonable, and this arc extinguishing system and static contact can not the integrated modularization, and the assembly is not convenient, and this arc extinguishing system can not lengthen electric arc, can't be with the quick cooling of electric arc to it is unsatisfactory to lead to its arc extinguishing effect, and the contact is burnt out easily, and the life of contact is shorter, leads to the breaking capacity of circuit breaker lower.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a simple structure, stable performance are reliable, the assembly is convenient, can effectively prolong circuit breaker life, improve the static contact arc extinguishing module of circuit breaker breaking capacity.
In order to realize the above-mentioned purpose, the utility model discloses a static contact arc extinguishing module of circuit breaker, including the static contact, set up the arc extinguishing subassembly on the static contact, the arc extinguishing subassembly include flash barrier, explosion chamber, static contact one end have the contact site that extends in the flash barrier and be the U type, be provided with the stationary contact on the afterbody of contact site, the explosion chamber shroud on the contact site, and be provided with the through-hole of intercommunication between stationary contact and explosion chamber on the contact site, the flash barrier on correspond the below department of stationary contact and be provided with the magnetic conduction piece.
The beneficial effect of above-mentioned structure is: the static contact and the arc extinguishing component are integrated into a modular structure design, so that the static contact arc extinguishing module is convenient to assemble. The contact part of the static contact adopts a U-shaped structural design, so that when the static contact is disconnected, the double-time electric repulsion force can quickly repel the moving contact and separate from the static contact, and the disconnection capability is stronger. The magnetic conductive sheet plays a role in increasing electromagnetic force, is beneficial to the rapid breaking of the circuit breaker, and can effectively improve the breaking capacity of the circuit breaker; meanwhile, a large number of wires are arranged in the electronic circuit breaker, when the circuit breaker is broken, flashover easily burns the wires to cause the function failure of the circuit breaker, the arc isolating plate can play a role in isolating the wires inside the electric arc protection circuit breaker, and the safety is higher. Therefore, the static contact arc extinguishing module of the circuit breaker has the advantages of being simple in structure, stable and reliable in performance, convenient and fast to assemble, capable of effectively prolonging the service life of the circuit breaker and improving the breaking capacity of the circuit breaker.
Particularly, two sides of the arc isolating plate are respectively provided with a side partition plate extending to two sides of the arc extinguishing chamber, a rear partition plate is arranged between the two side partition plates corresponding to the arc isolating plate, the tail part of the rear partition plate is abutted against the wiring part at the other end of the static contact, and an accommodating space for accommodating the contact part is formed between the two side partition plates and the rear partition plate. The flash barrier has the accommodation space of the contact part of placing the static contact, and the flash barrier can play the effect of keeping off to the flashover, can guarantee that electric arc enters into the arc extinguishing chamber fast, realizes extinguishing fast of electric arc.
Particularly, the upper end of the arc extinguish chamber is provided with an arc striking plate, the arc striking plate is provided with an arc striking groove communicated with an arc striking channel of the arc extinguish chamber, and the arc striking plate is provided with an arc striking angle which is bent and extends on the arc striking groove. The arc striking piece can introduce residual electric arc on the movable contact into the arc extinguishing chamber, reduces the ablation of the electric arc to the movable contact, is favorable for prolonging the service life of the circuit breaker, and can realize the quick extinguishing of the electric arc.
Particularly, the arc extinguishing chamber is provided with an arc extinguishing piece which covers the arc striking piece, and the arc extinguishing piece is provided with a plurality of arc extinguishing holes. The arc extinguishing piece can rapidly cool and extinguish the electric arc on the arc striking piece, and is favorable for improving the arc extinguishing effect of the static contact arc extinguishing module.
Particularly, the arc isolating plate and the magnetic conduction sheet are respectively provided with a positioning hole which is in limit fit with the circuit breaking base. The locating hole of flash barrier, magnetic conduction piece and circuit breaker base looks block to the static contact arc extinguishing module of being convenient for assembles with the circuit breaker base, and the assembly is more convenient.
Drawings
Fig. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is a cross-sectional view of an embodiment of the present invention.
Fig. 3 is a perspective view of an arc barrier according to an embodiment of the present invention.
Fig. 4 is a perspective view of a static contact according to an embodiment of the present invention.
Fig. 5 is a perspective view of an arc extinguish chamber according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1-5, the embodiment of the utility model provides a static contact arc extinguishing module of circuit breaker, including static contact 10, the arc extinguishing subassembly 20 of setting on static contact 10, arc extinguishing subassembly 20 include flash barrier 21, explosion chamber 22, static contact 10 one end have and extend in flash barrier 21 and be the contact site 101 of U type, be provided with stationary contact 102 on the afterbody of contact site 101, explosion chamber 22 shroud on contact site 101, and be provided with the through-hole 103 of intercommunication between stationary contact 102 and explosion chamber 22 on the contact site 101, flash barrier 21 on correspond stationary contact 102's below department and be provided with magnetic conduction piece 23.
As shown in fig. 2 to 5, two sides of the arc isolating plate 21 are respectively provided with a side partition 211 extending at two sides of the arc extinguishing chamber 22, a rear partition 212 is disposed at a position of the arc isolating plate 21 corresponding to a position between the two side partitions 211, a tail of the rear partition 212 abuts against the wiring portion 104 at the other end of the static contact 10, and an accommodating space 210 for accommodating the contact portion 101 is formed between the two side partitions 211 and the rear partition 212. The flash barrier has the accommodation space of the contact part of placing the static contact, and the flash barrier can play the effect of keeping off to the flashover, can guarantee that electric arc enters into the arc extinguishing chamber fast, realizes extinguishing fast of electric arc. The arc striking plate 221 is arranged at the upper end of the arc extinguishing chamber 22, an arc striking groove 222 communicated with the arc striking channel 220 of the arc extinguishing chamber 22 is formed in the arc striking plate 221, and an arc striking angle 223 bent and extending on the arc striking groove 222 is formed in the arc striking plate 221. The arc striking piece can introduce residual electric arc on the movable contact into the arc extinguishing chamber, reduces the ablation of the electric arc to the movable contact, is favorable for prolonging the service life of the circuit breaker, and can realize the quick extinguishing of the electric arc. The arc extinguishing chamber 22 is provided with an arc extinguishing piece 224 covered on the arc striking piece 221, and the arc extinguishing piece 224 is provided with a plurality of arc extinguishing holes 225. The arc extinguishing piece can rapidly cool and extinguish the electric arc on the arc striking piece, and is favorable for improving the arc extinguishing effect of the static contact arc extinguishing module. The arc isolating plate 21 and the magnetic conducting sheet 23 are respectively provided with a positioning hole 200 which is in limit fit with the circuit breaking base. The locating hole of flash barrier, magnetic conduction piece and circuit breaker base looks block to the static contact arc extinguishing module of being convenient for assembles with the circuit breaker base, and the assembly is more convenient.
The static contact and the arc extinguishing component are integrated into a modular structure design, so that the static contact arc extinguishing module is convenient to assemble. The contact part of the static contact adopts a U-shaped structural design, so that when the static contact is disconnected, the double-time electric repulsion force can quickly repel the moving contact and separate from the static contact, and the disconnection capability is stronger. The magnetic conductive sheet plays a role in increasing electromagnetic force, is beneficial to the rapid breaking of the circuit breaker, and can effectively improve the breaking capacity of the circuit breaker; meanwhile, a large number of wires are arranged in the electronic circuit breaker, when the circuit breaker is broken, flashover easily burns the wires to cause the function failure of the circuit breaker, the arc isolating plate can play a role in isolating the wires inside the electric arc protection circuit breaker, and the safety is higher. Therefore, the static contact arc extinguishing module of the circuit breaker has the advantages of being simple in structure, stable and reliable in performance, convenient and fast to assemble, capable of effectively prolonging the service life of the circuit breaker and improving the breaking capacity of the circuit breaker.
Claims (5)
1. The utility model provides a static contact arc extinguishing module of circuit breaker, includes the static contact, sets up the arc extinguishing subassembly on the static contact, its characterized in that: the arc extinguishing subassembly include flash barrier, explosion chamber, static contact one end have and extend in the flash barrier and be the contact site of U type, be provided with the stationary contact on the afterbody of contact site, the explosion chamber shroud on the contact site, and be provided with the through-hole of intercommunication between stationary contact and explosion chamber on the contact site, the flash barrier on correspond the below department of stationary contact and be provided with the magnetic conduction piece.
2. The static contact arc extinguishing module of the circuit breaker of claim 1, characterized in that: the arc-isolating plate is characterized in that two sides of the arc-isolating plate are respectively provided with a side partition plate extending to two sides of the arc-extinguishing chamber, a rear partition plate is arranged between the two side partition plates corresponding to the arc-isolating plate, the tail of the rear partition plate is abutted to the wiring portion at the other end of the static contact, and an accommodating space for accommodating the contact portion is formed between the two side partition plates and the rear partition plate.
3. The static contact arc extinguishing module of the circuit breaker according to claim 1 or 2, characterized in that: the arc striking plate is arranged at the upper end of the arc extinguishing chamber, an arc striking groove communicated with an arc striking channel of the arc extinguishing chamber is formed in the arc striking plate, and an arc striking angle bent to extend on the arc striking groove is formed in the arc striking plate.
4. The static contact arc extinguishing module of the circuit breaker of claim 3, wherein: the arc extinguishing chamber is provided with an arc extinguishing piece which covers the arc striking piece, and the arc extinguishing piece is provided with a plurality of arc extinguishing holes.
5. The static contact arc extinguishing module of the circuit breaker of claim 3, wherein: and the arc isolating plate and the magnetic conduction sheet are respectively provided with a positioning hole which is in limit fit with the circuit breaking base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220883142.7U CN217182130U (en) | 2022-04-15 | 2022-04-15 | Static contact arc extinguishing module of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220883142.7U CN217182130U (en) | 2022-04-15 | 2022-04-15 | Static contact arc extinguishing module of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217182130U true CN217182130U (en) | 2022-08-12 |
Family
ID=82709843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220883142.7U Active CN217182130U (en) | 2022-04-15 | 2022-04-15 | Static contact arc extinguishing module of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217182130U (en) |
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2022
- 2022-04-15 CN CN202220883142.7U patent/CN217182130U/en active Active
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