CN220233072U - Circuit breaker arc-extinguishing chamber with insulating protection mechanism - Google Patents
Circuit breaker arc-extinguishing chamber with insulating protection mechanism Download PDFInfo
- Publication number
- CN220233072U CN220233072U CN202321628724.1U CN202321628724U CN220233072U CN 220233072 U CN220233072 U CN 220233072U CN 202321628724 U CN202321628724 U CN 202321628724U CN 220233072 U CN220233072 U CN 220233072U
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- arc
- plate
- circuit breaker
- insulation protection
- plates
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- 238000009413 insulation Methods 0.000 claims abstract description 43
- 238000010494 dissociation reaction Methods 0.000 claims abstract description 7
- 230000005593 dissociations Effects 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims abstract 4
- 230000001012 protector Effects 0.000 claims description 12
- 238000004880 explosion Methods 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims 3
- 230000004888 barrier function Effects 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 abstract description 8
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000010891 electric arc Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000002242 deionisation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229920003189 Nylon 4,6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses an arc-extinguishing chamber of a circuit breaker with an insulation protection mechanism, which comprises two side plates and a plurality of arc-extinguishing grid plates which are fixedly arranged between the two side plates at equal intervals, wherein the outer sides of the side plates are fixedly provided with reinforcing side plates, the tops of the side plates are provided with first insulation protection bodies through clamping, and the bottoms of the side plates are provided with second insulation protection bodies through clamping. The utility model can play a role in insulating and isolating arcs of arcs by arranging the first insulating protective body and the second insulating protective body, and avoid the backflow of hot air flow generated by the arcs through the rear wall of the arc-extinguishing cover, thereby avoiding the breakdown phenomenon of the breaker, avoiding the damage to the breaker and equipment caused by breakdown, avoiding the damage to human bodies, and simultaneously avoiding the influence of arc dissociation on the inside of the breaker.
Description
Technical Field
The utility model relates to the technical field of circuit breakers, in particular to an arc extinguishing chamber of a circuit breaker with an insulation protection mechanism.
Background
The circuit breaker is an important part in the distribution electrical equipment, is mainly used for an industrial low-voltage power system, and is used for switching on and off current in a power grid circuit and protecting a circuit and power supply equipment from damage caused by faults such as overload, undervoltage, short circuit, single-phase grounding and the like. The breaker is mainly used for breaking overload or short-circuit current through an arc extinguishing chamber arranged in the breaker. When fault current occurs in the circuit and the current value exceeds the set protection range of the circuit breaker, the tripping mechanism is driven to act, so that the moving contact and the fixed contact of the circuit breaker are rapidly disconnected, and at the moment, the voltage between the moving contact and the fixed contact causes air medium discharge so as to generate high-temperature arc. The arc causes, on the one hand, a sharp rise in the temperature of the air in the arc extinguishing device during the combustion process, thereby accelerating the ionization of the air. On the other hand, the electric arc is separated into a plurality of short arcs by a plurality of arc extinguishing grid plates under the pushing of the magnetic field and the fluid effect in the arc extinguishing chamber, the deionization effect of the electric arc is enhanced by virtue of the metal arc separation plates, the electric arc is reduced, the voltage is rapidly increased, and the electric arc is extinguished.
When the existing circuit breaker is used, in order to obtain higher arc voltage, arc extinguishing grid plates in an arc extinguishing chamber of the circuit breaker are tightly arranged, resistance of an arc when the arc enters the arc extinguishing chamber is larger, the arc is caused to repeatedly drop at the arc extinguishing grid plate inlet for a longer time, hot air flow generated by the arc flows back through the rear wall of the arc extinguishing chamber, and then the circuit breaker is caused to break down, once the circuit of the circuit breaker breaks down, the circuit of the circuit breaker is conducted, great harm is caused to equipment, and damage is caused to a human body.
Disclosure of Invention
The utility model provides an arc extinguishing chamber of a circuit breaker with an insulation protection mechanism, which solves the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a circuit breaker explosion vent with insulating protection mechanism, includes two curb plates and fixed mounting a plurality of equidistant bars piece of arranging between two curb plates, the outside of curb plate is all fixed to be provided with the reinforcing side board, the top of curb plate is provided with first insulating protection body through the joint, the bottom of curb plate is provided with the insulating protection body of second through the joint.
Preferably, the two sides of the first insulation protection body are fixedly provided with first arc-shaped plates, one side of the inner end of each first arc-shaped plate is fixedly provided with a first clamping plate, and the other side of the inner end of each first arc-shaped plate is fixedly provided with a second clamping plate.
Preferably, a second arc-shaped plate is fixedly arranged on one side of the bottom of the first insulating protection body, and the inner end of the second arc-shaped plate is tightly attached to one side of the side plate.
Preferably, both sides of the second insulating protection body are fixedly provided with insulating side plates, and the inner end surfaces of the insulating side plates, the first arc-shaped plate, the first clamping plate and the second clamping plate are fixedly provided with anti-slip strip-shaped grooves.
Preferably, the middle part of the arc extinguishing grid sheet is provided with an arc striking port, and the first arc baffle plate is arranged at the top opening of the arc striking port of the arc extinguishing grid sheet.
Preferably, the front end of the side plate is fixedly provided with a first free plate, the bottom of the side plate is fixedly provided with a second free plate, the first free plate is vertically arranged at the front end of the arc-extinguishing grid sheet, and the second free plate is transversely arranged at the bottom of the arc-extinguishing grid sheet.
Preferably, the first dissociation board and the second dissociation board are both provided with a plurality of exhaust holes.
Advantageous effects
The technical scheme of one or more of the arc extinguishing chambers of the circuit breaker with the insulation protection mechanism provided by the embodiment of the utility model has at least one of the following technical effects:
the utility model provides an arc-extinguishing cover of a circuit breaker with an insulation protection mechanism, which comprises two side plates and a plurality of arc-extinguishing grid plates which are fixedly arranged between the two side plates at equal intervals, wherein the outer sides of the side plates are fixedly provided with reinforcing side plates, so that the breakdown resistance of the side plates is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of an explosive structure according to the present utility model;
FIG. 3 is a schematic side view of the present utility model;
FIG. 4 is a schematic view of a first insulation protector according to the present utility model;
FIG. 5 is a schematic diagram of a second insulation protector according to the present utility model;
the correspondence between the reference numerals and the component names in the drawings is as follows:
1. a side plate; 2. arc extinguishing grid plates; 3. reinforcing the side plates; 4. a first insulating protector; 5. a second insulating protector; 6. a first arc-shield plate; 7. a first clamping plate; 8. a second clamping plate; 9. a second arc-shield plate; 10. an insulating side plate; 11. an anti-slip bar-shaped groove; 12. an arc striking port; 13. a first deionization plate; 14. a second deionization plate; 15. and an exhaust hole.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
1-5, which are schematic structural views of a circuit breaker arc chute with an insulation protection mechanism according to a preferred embodiment of the present utility model;
the utility model discloses an arc-extinguishing cover of a circuit breaker with an insulation protection mechanism, which comprises two side plates 1 and a plurality of arc-extinguishing grid plates 2 which are fixedly arranged between the two side plates 1 at equal intervals, wherein the outer sides of the side plates 1 are fixedly provided with reinforcing side plates 3, the arc-extinguishing grid plates 2 are arranged between the two side plates 1 and the reinforcing side plates 3 in a riveting mode, the breakdown resistance of the side plates is improved through the reinforcing side plates 3, the top of each side plate 1 is provided with a first insulation protector 4 in a clamping manner, the bottom of each side plate 1 is provided with a second insulation protector 5 in a clamping manner, the first insulation protector 4 and the second insulation protector 2 are made of gas-producing arc-extinguishing materials, such as nylon 66 or nylon 46, and are flame-resistant, wear-resistant, high in tensile strength and good in electrical insulation, when hot air current generated by an arc in the structure flows back through the rear wall of the arc-extinguishing cover, the arc is limited by the first insulation protector 4 and the second insulation protector 5, and the arc is isolated inside the arc-extinguishing cover, so that the breakdown phenomenon of the circuit breaker is avoided.
According to the arc-extinguishing cover with the insulation protection mechanism for the circuit breaker, the first arc-extinguishing plates 6 are fixedly arranged on two sides of the first insulation protection body 4, the tube width of each first arc-extinguishing plate 6 is larger than the thicknesses of the side plate 1 and the reinforcing side plate 3, the first clamping plate 7 is fixedly arranged on one side of the inner end of each first arc-extinguishing plate 6, the second clamping plate 8 is fixedly arranged on the other side of the inner end of each first arc-extinguishing plate 6, clamping grooves are formed between one side of each first arc-extinguishing plate 6 and the corresponding first clamping plate 7 and the corresponding second clamping plate 8, the cross sections of the clamping grooves are of U-shaped structures, and the first insulation protection body 4 is clamped on the top of the side plate 1 through the structures to achieve the installation and fixation effects.
According to the arc extinguishing chamber with the insulation protection mechanism, the second arc-isolating plate 9 is fixedly arranged on one side of the bottom of the first insulation protection body 4, the second arc-isolating plate 9 better plays a role in isolating an arc, the insulation effect is improved, and the inner end of the second arc-isolating plate 9 is tightly attached to one side of the side plate 1.
According to the arc extinguishing chamber with the insulation protection mechanism, the two sides of the second insulation protection body 5 are fixedly provided with the insulation side plates 10, the inner end surfaces of the insulation side plates 10, the first arc-isolating plate 6, the first clamping plate 7 and the second clamping plate 8 are fixedly provided with the anti-slip strip-shaped grooves 11, the inner sides of the insulation side plates 10 are tightly attached to the outer sides of the reinforced side plates 3, the inner sides of the first clamping plate 7 and the second clamping plate 8 are tightly attached to one side of the side plates 1, and the first insulation protection body 4 and the second insulation protection body 5 are prevented from sliding off the side plates 1 and the reinforced side plates 3 through the structure, so that the installation stability is improved.
According to the arc-extinguishing cover of the circuit breaker with the insulation protection mechanism, the arc striking opening 12 is formed in the middle of the arc-extinguishing grid sheet 2, an electric arc is led into the arc-extinguishing cover through the arc striking opening 12, the first arc-isolating plate 6 is arranged at the top opening of the arc striking opening 12 of the arc-extinguishing grid sheet 2, the first arc-isolating plate 6 covers the top of the arc-extinguishing grid sheet 2, only the opening of the arc striking opening 12 is reserved, so that the electric arc is insulated by the interference of the first arc-isolating plate 6 during backflow, and the first arc-isolating plate 6 better limits the electric arc and prevents the electric arc from leaking out of the arc striking opening 12.
According to the arc-extinguishing chamber with the insulation protection mechanism, the front end of the side plate 1 is fixedly provided with the first arc-extinguishing plate 13 through riveting and clamping, the bottom of the side plate 1 is fixedly provided with the second arc-extinguishing plate 14 through riveting and clamping, the first arc-extinguishing plate 13 is vertically arranged at the front end of the arc-extinguishing gate sheet 2, and the second arc-extinguishing plate 14 is transversely arranged at the bottom of the arc-extinguishing gate sheet 2.
According to the arc extinguishing chamber with the insulation protection mechanism, the first dissociation plate 13 and the second dissociation plate 14 are respectively provided with the plurality of exhaust holes 15, the exhaust holes 15 are arranged in an array, uniform distribution is realized, uniform air flow is realized, the discharge of hot air flow generated by an electric arc is facilitated, and the overhigh heat is avoided.
The installation mode, the connection mode or the setting mode of the arc extinguishing chamber with the insulation protection mechanism of the circuit breaker are common mechanical modes, and the arc extinguishing chamber can be implemented as long as the beneficial effects of the arc extinguishing chamber can be achieved.
The foregoing is a further elaboration of the present utility model in connection with the detailed description, and it is not intended that the utility model be limited to the specific embodiments shown, but rather that a number of simple deductions or substitutions be made by one of ordinary skill in the art without departing from the spirit of the utility model, should be considered as falling within the scope of the utility model as defined in the appended claims.
Claims (7)
1. The utility model provides a circuit breaker explosion vent with insulating protection machanism, includes two curb plates (1) and fixed mounting a plurality of equidistant bars piece (2) of putting of arc extinguishing between two curb plates (1), its characterized in that: the side plate (1) is fixedly provided with a reinforced side plate (3) on the outer side, a first insulating protector (4) is arranged at the top of the side plate (1) through clamping connection, and a second insulating protector (5) is arranged at the bottom of the side plate (1) through clamping connection.
2. A circuit breaker arc chute with insulation protection mechanism as in claim 1 wherein: the insulation protection device is characterized in that first arc-shaped isolation plates (6) are fixedly arranged on two sides of the first insulation protection body (4), first clamping plates (7) are fixedly arranged on one side of the inner end of each first arc-shaped isolation plate (6), and second clamping plates (8) are fixedly arranged on the other side of the inner end of each first arc-shaped isolation plate (6).
3. A circuit breaker arc chute with insulation protection mechanism as in claim 1 wherein: a second arc-shaped plate (9) is fixedly arranged on one side of the bottom of the first insulating protection body (4), and the inner end of the second arc-shaped plate (9) is tightly attached to one side of the side plate (1).
4. A circuit breaker arc chute with insulation protection mechanism as in claim 2 wherein: the anti-slip protective device is characterized in that insulating side plates (10) are fixedly arranged on two sides of the second insulating protective body (5), and anti-slip strip grooves (11) are fixedly arranged on inner end surfaces of the insulating side plates (10), the first arc-isolating plates (6), the first clamping plates (7) and the second clamping plates (8).
5. A circuit breaker arc chute with insulation protection mechanism as in claim 2 wherein: the arc striking mouth (12) has been seted up at the middle part of arc extinguishing bars piece (2), first flash barrier (6) set up in the top opening part of arc striking mouth (12) of arc extinguishing bars piece (2).
6. A circuit breaker arc chute with insulation protection mechanism as in claim 1 wherein: the novel arc extinguishing grid plate is characterized in that a first free-eliminating plate (13) is fixedly arranged at the front end of the side plate (1), a second free-eliminating plate (14) is fixedly arranged at the bottom of the side plate (1), the first free-eliminating plate (13) is vertically arranged at the front end of the arc extinguishing grid plate (2), and the second free-eliminating plate (14) is transversely arranged at the bottom of the arc extinguishing grid plate (2).
7. The arc chute of a circuit breaker with insulation protection mechanism of claim 6, wherein: the first dissociation board (13) and the second dissociation board (14) are provided with a plurality of exhaust holes (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321628724.1U CN220233072U (en) | 2023-06-26 | 2023-06-26 | Circuit breaker arc-extinguishing chamber with insulating protection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321628724.1U CN220233072U (en) | 2023-06-26 | 2023-06-26 | Circuit breaker arc-extinguishing chamber with insulating protection mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220233072U true CN220233072U (en) | 2023-12-22 |
Family
ID=89172998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321628724.1U Active CN220233072U (en) | 2023-06-26 | 2023-06-26 | Circuit breaker arc-extinguishing chamber with insulating protection mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220233072U (en) |
-
2023
- 2023-06-26 CN CN202321628724.1U patent/CN220233072U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.18, Yongxing 2nd Road, Chengdong Industrial functional zone, Yueqing City, Wenzhou City, Zhejiang Province 325600 Patentee after: Hejing Electric Appliances (Wenzhou) Co.,Ltd. Country or region after: China Address before: No.18, Yongxing 2nd Road, Chengdong Industrial functional zone, Yueqing City, Wenzhou City, Zhejiang Province 325600 Patentee before: Zhejiang Yanke Electric Appliance Co.,Ltd. Country or region before: China |