CN214477305U - Arc-drawing structure of arc-extinguishing shield installation cavity of circuit breaker shell - Google Patents
Arc-drawing structure of arc-extinguishing shield installation cavity of circuit breaker shell Download PDFInfo
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- CN214477305U CN214477305U CN202120530115.7U CN202120530115U CN214477305U CN 214477305 U CN214477305 U CN 214477305U CN 202120530115 U CN202120530115 U CN 202120530115U CN 214477305 U CN214477305 U CN 214477305U
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- arc
- installation cavity
- circuit breaker
- casing
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Abstract
The utility model discloses an arc structure of drawing of circuit breaker casing arc-extinguish chamber installation cavity, which comprises a housin, be equipped with the side bounding wall in the casing, the side bounding wall encloses to close and forms an installation cavity that supplies the arc-extinguish chamber installation, set up the arc passageway of advancing of the external and installation cavity of intercommunication on the side bounding wall, the position that is close to into the arc passageway in the installation cavity is equipped with a plurality of arc ignition grooves, every arc ignition groove's one end all moves towards the central position of advancing arc passageway, the other end all towards the installation cavity, arc ignition groove's shape is the arc, the outer wall of casing is equipped with the heat dissipation passageway of intercommunication installation cavity. The utility model has the advantages of it is following and effect: the utility model discloses can advance the installation cavity with electric arc guide fast, make the arc-extinguishing chamber reach the best arc extinguishing state to guarantee the arc extinguishing performance of circuit breaker.
Description
Technical Field
The utility model relates to a circuit breaker, in particular to arc structure of drawing of circuit breaker casing arc-extinguish chamber installation cavity.
Background
Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers according to their range of use. The low-voltage circuit breaker is also called an automatic switch, commonly called an air switch and also called a low-voltage circuit breaker, and is an electric appliance which not only has the function of a manual switch, but also can automatically perform voltage loss, undervoltage, overload and short-circuit protection. It can be used for distributing electric energy, starting asynchronous motor infrequently, protecting power supply circuit and motor, etc., when they are seriously overloaded or short-circuited or under-voltage, etc. faults occur, it can automatically cut off circuit, its function is equivalent to the combination of fuse type switch and over-and under-heat relay, etc., and after breaking fault current, it does not need to change parts, so that it has been extensively used.
The arc extinguishing cover arranged in the circuit breaker extinguishes the generated electric arc, and the arc extinguishing capability of the arc extinguishing cover directly influences the breaking capability of the circuit breaker, so that the safety of electricity utilization is determined.
Current designer is when the arc extinguishing performance of design circuit breaker, and the multiple notes are heavily in the performance design of arc-extinguishing cover and have neglected the importance of installation cavity design, lead to the unable quick entering installation cavity of the electric arc that produces, make the arc-extinguishing cover can't reach the best arc extinguishing state, finally influence the arc extinguishing performance of circuit breaker.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a circuit breaker casing arc-extinguish chamber installation cavity draw arc structure, this draw arc structure can be fast with electric arc guide entering installation cavity, make the arc-extinguish chamber reach the best arc extinguishing state to guarantee the arc extinguishing performance of circuit breaker.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an arc structure draws of circuit breaker casing arc-extinguish chamber installation cavity, which comprises a housin, be equipped with the side bounding wall in the casing, the side bounding wall encloses to close and forms an installation cavity that supplies the arc-extinguish chamber installation, set up the arc passageway of advancing of the external and installation cavity of intercommunication on the side bounding wall, the position that is close to into the arc passageway in the installation cavity is equipped with a plurality of arc grooves, every the one end in arc groove all advances arc passageway, the other end towards the central point of installation cavity, the shape in arc groove is the arc, the outer wall of casing is equipped with the heat dissipation channel of intercommunication installation cavity.
Through adopting above-mentioned technical scheme, the setting of advancing the arc passageway makes the electric arc that produces can be quick get into the installation cavity and cooperate the striking groove that sets up for the electric arc that gets into the installation cavity moves towards the central point of installation cavity position under the guide in striking groove, more is favorable to electric arc to get into the arc extinguishing chamber, thereby reaches better arc extinguishing effect, makes the arc extinguishing chamber reach the best arc extinguishing state, thereby guarantees the arc extinguishing performance of circuit breaker. The arc extinguishing cover is cooled through the arrangement of the heat dissipation channel, so that a better cooling arc extinguishing effect is achieved.
Further setting the following steps: an arc baffle plate is arranged in the position close to the arc inlet channel in the shell, the height of the arc baffle plate is higher than that of the side wall plate, and an arc striking corner which guides electric arc into the central position of the installation cavity is formed on one side surface of the arc baffle plate facing the installation cavity.
Through adopting above-mentioned technical scheme, the installation cavity that the electric arc that sets up that the arc baffle prevented to get into the installation cavity breaks away from to setting up through striking turning is used for guiding electric arc towards the central point of installation cavity and moves, more is favorable to electric arc to get into the arc extinguishing chamber, thereby reaches better arc extinguishing effect.
Further setting the following steps: a plurality of arc blocking convex strips are distributed in the installation cavity corresponding to one side wall of the installation cavity where the electric arc enters.
Through adopting above-mentioned technical scheme, keeping off the setting of arc sand grip and making the electric arc of motion in the installation cavity can carry out better distortion under the effect of keeping off the arc sand grip and cut apart, further improve arc voltage to can prevent the electric arc to extinguish the back and restrike, realize better arc extinguishing.
Further setting the following steps: a plurality of positioning bulges used for positioning the arc extinguishing chamber are distributed in the mounting cavity.
Through adopting above-mentioned technical scheme, the bellied setting of location makes the arc-extinguishing chamber realize stablizing the installation in the installation cavity, promotes installation stability.
Further setting the following steps: the outlet end of the heat dissipation channel is provided with a plurality of heat dissipation channels, and an arc blocking column is arranged in the position, close to the inlet end of the heat dissipation channel, in the installation cavity.
Through adopting above-mentioned technical scheme, the setting of a plurality of exit ends can reach better cooling effect to carry out better distortion to electric arc through keeping off the setting of arc post and cut apart, further improve arc voltage, and can prevent the electric arc and extinguish the back and restrike, realize better arc extinguishing.
To sum up, the utility model discloses following beneficial effect has: the utility model discloses can advance the installation cavity with electric arc guide fast, make the arc-extinguishing chamber reach the best arc extinguishing state to guarantee the arc extinguishing performance of circuit breaker.
Drawings
FIG. 1 is a perspective view of an embodiment;
fig. 2 is a schematic structural diagram of the embodiment.
In the figure: 1. a housing; 2. side coaming plates; 3. a mounting cavity; 4. an arc inlet channel; 5. an arc striking groove; 6. a heat dissipation channel; 7. an arc baffle; 8. an arc striking corner; 9. arc blocking convex strips; 10. positioning the projection; 11. an arc blocking column.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, an arc discharge structure of an arc extinguishing chamber of a circuit breaker shell comprises a shell 1, wherein a side wall plate 2 is integrally arranged in the shell 1, the side wall plate 2 is enclosed to form an installation chamber 3 for installing an arc extinguishing chamber, and an arc inlet channel 4 communicated with the outside and the installation chamber 3 is formed in the side wall plate 2. A plurality of arc grooves 5 have been seted up to the position that is close to into arc passageway 4 in the installation cavity 3, and the one end of every arc groove 5 all faces into arc passageway 4, the other end all faces the central position of installation cavity 3, and the shape of arc groove 5 is the arc, and the heat dissipation channel 6 of intercommunication installation cavity 3 is seted up to casing 1's outer wall, and a plurality ofly has been seted up to heat dissipation channel 6's exit end.
An arc baffle plate 7 is integrally arranged at a position close to the arc inlet channel 4 in the shell 1, the height of the arc baffle plate 7 is higher than that of the side wall plate 2, and an arc striking corner 8 for guiding electric arcs into the central position of the installation cavity 3 is formed on one side surface of the arc baffle plate 7 facing the installation cavity 3. A plurality of arc blocking convex strips 9 are fixedly distributed on one side wall of the installation cavity 3 corresponding to the electric arc, and a plurality of positioning protrusions 10 used for positioning the arc extinguishing chamber are fixedly distributed in the installation cavity 3. An arc blocking column 11 is fixedly arranged in the mounting cavity 3 close to the inlet end of the heat dissipation channel 6.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a circuit breaker casing arc-extinguish chamber draw arc structure, includes casing (1), be equipped with side bounding wall (2) in casing (1), side bounding wall (2) enclose to close and form installation cavity (3) that supply the arc-extinguish chamber to install, its characterized in that: set up the external arc passageway (4) that advances with installation cavity (3) of intercommunication on side bounding wall (2), the position that is close to in installation cavity (3) and advances arc passageway (4) is equipped with a plurality of arc grooves (5), every the one end of arc groove (5) all advances arc passageway (4), the central point that the other end all faces installation cavity (3) is drawn, the shape of arc groove (5) is the arc, the outer wall of casing (1) is equipped with heat dissipation channel (6) of intercommunication installation cavity (3).
2. The arc discharge structure of a circuit breaker housing arc chute mounting chamber of claim 1 wherein: be close to in casing (1) and be equipped with arc baffle (7) in the position of advancing arc passageway (4), the high side wall board (2) that is higher than of arc baffle (7), arc baffle (7) form one towards the side of installation cavity (3) and lead into arc striking turning (8) of installation cavity (3) central point with electric arc guide.
3. The arc discharge structure of a circuit breaker housing arc chute mounting chamber of claim 1 wherein: a plurality of arc blocking convex strips (9) are distributed on one side wall of the installation cavity (3) corresponding to the arc entering the installation cavity (3).
4. The arc discharge structure of a circuit breaker housing arc chute mounting chamber of claim 1 wherein: a plurality of positioning bulges (10) used for positioning the arc-extinguishing cover are arranged in the mounting cavity (3).
5. The arc discharge structure of a circuit breaker housing arc chute mounting chamber of claim 1 wherein: the exit end of heat dissipation channel (6) is provided with a plurality ofly, be close to in installation cavity (3) and be equipped with fender arc post (11) in the position of heat dissipation channel (6) entry end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120530115.7U CN214477305U (en) | 2021-03-12 | 2021-03-12 | Arc-drawing structure of arc-extinguishing shield installation cavity of circuit breaker shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120530115.7U CN214477305U (en) | 2021-03-12 | 2021-03-12 | Arc-drawing structure of arc-extinguishing shield installation cavity of circuit breaker shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214477305U true CN214477305U (en) | 2021-10-22 |
Family
ID=78155326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120530115.7U Active CN214477305U (en) | 2021-03-12 | 2021-03-12 | Arc-drawing structure of arc-extinguishing shield installation cavity of circuit breaker shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214477305U (en) |
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2021
- 2021-03-12 CN CN202120530115.7U patent/CN214477305U/en active Active
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