Arc extinguishing device of circuit breaker

Abstract

The invention discloses a circuit breaker arc extinguishing device, and relates to the technical field of circuit breaker arc extinguishing, the circuit breaker arc extinguishing device comprises a main arc extinguishing module, an auxiliary arc extinguishing module and a cleaning module, the auxiliary arc extinguishing module is installed at one end of the main arc extinguishing module, and the main arc extinguishing module and the auxiliary arc extinguishing module are used for sequentially contacting and extinguishing arcs; the cleaning module is installed on one side of the main arc extinguishing module, and the cleaning module is used for cleaning the interior of the main arc extinguishing module. The arc extinguishing device can realize continuous and sufficient arc extinguishing and is long in service life.

Description

Technical Field

[0001] The present invention relates to the technical field of arc extinguishing of circuit breakers, and particularly to an arc extinguishing device for a circuit breaker. Background Art

[0002] Traditional arc extinguishing devices for circuit breakers generally include a housing and arc extinguishing grid plates installed in the inner cavity of the housing. At the exhaust end of the housing, there are two layers of elastic reed pieces. One ends of the two layers of elastic reed pieces are respectively fixed on different sides of the side wall of the housing, and the other ends of the two layers of elastic reed pieces are in a free state and are in contact with each other. Multiple mutually parallel grid slots are opened on both layers of elastic reed pieces, and the positions of the grid slots on the upper and lower layers of elastic reed pieces are staggered in the horizontal direction.

[0003] However, there are some defects in the above device during use. For example, the arc extinguishing effect of the arc extinguishing grid plates is poor, and it cannot ensure sufficient arc extinguishing treatment after long-term continuous use. Moreover, after ablation between the closely arranged arc extinguishing grid plates, adjacent arc extinguishing grid plates are likely to come into contact and stick together, resulting in a poor arc extinguishing effect. And if the ablated part is not cleaned in time, it will exacerbate the ablation of the arc extinguishing plates, thus greatly reducing the service life of the arc extinguishing plates. Summary of the Invention

[0004] The purpose of the present invention is to provide an arc extinguishing device for a circuit breaker to solve the problems existing in the above prior art, achieve continuous and sufficient arc extinguishing, and have a long service life.

[0005] To achieve the above purpose, the present invention provides the following solution:

[0006] The present invention provides an arc extinguishing device for a circuit breaker, including a main arc extinguishing module, an auxiliary arc extinguishing module, and a cleaning module. The auxiliary arc extinguishing module is installed at one end of the main arc extinguishing module, and the main arc extinguishing module and the auxiliary arc extinguishing module are used to contact the arc in sequence and extinguish the arc. The cleaning module is installed on one side of the main arc extinguishing module, and the cleaning module is used to clean the inside of the main arc extinguishing module.

[0007] Preferably, the main arc extinguishing module includes a plurality of arc extinguishing units, and adjacent arc extinguishing units are connected in sequence. The arc extinguishing unit at one end is used to first contact the arc, and the arc extinguishing unit at the other end is used to connect the auxiliary arc extinguishing module.

[0008] Preferably, there are two arc extinguishing units, and the two arc extinguishing units are arranged symmetrically. The two arc extinguishing units are respectively a first arc extinguishing unit and a second arc extinguishing unit. The first end of the first arc extinguishing unit is connected to the second end of the second arc extinguishing unit, the second end of the first arc extinguishing unit is connected to the auxiliary arc extinguishing module, and the first end of the second arc extinguishing unit is used to first contact the arc.

[0009] Preferably, the first arc extinguishing unit includes a plurality of first arc extinguishing plates and a plurality of first arc extinguishing frames. The plurality of first arc extinguishing plates and the plurality of first arc extinguishing frames correspond to each other one by one. The plurality of first arc extinguishing plates are arranged in sequence and spaced apart. The plurality of first arc extinguishing frames are spaced apart. The second arc extinguishing unit includes a plurality of second arc extinguishing plates and a plurality of second arc extinguishing frames. The plurality of second arc extinguishing plates and the plurality of second arc extinguishing frames correspond to each other one by one. The plurality of second arc extinguishing plates are spaced apart. The plurality of second arc extinguishing frames are arranged in sequence and spaced apart. The first end of the first arc extinguishing plate is used to connect the second end of the second arc extinguishing plate. The second end of the first arc extinguishing plate is used to connect the first end of the first arc extinguishing frame. The second end of the first arc extinguishing frame is used to connect the auxiliary arc extinguishing module. The first end of the second arc extinguishing plate is used to connect the second end of the second arc extinguishing frame. The first end of the second arc extinguishing frame is used to first contact the arc.

[0010] Preferably, a connection outer frame is installed on the outer periphery of the main arc extinguishing module through fixing bolts, and the connection outer frame is connected to the outer periphery of the connection part of the first arc extinguishing plate and the second arc extinguishing plate. A fixing plate is installed between the first arc extinguishing plate and the second arc extinguishing plate.

[0011] Preferably, a plurality of first arc extinguishing transverse cutting grooves are also formed on the first arc extinguishing plate, and a plurality of second arc extinguishing transverse cutting grooves are also formed on the second arc extinguishing plate. Both the first arc extinguishing frame and the second arc extinguishing frame are bent arc extinguishing frames, and a plurality of auxiliary transverse cutting plates are installed inside both the first arc extinguishing frame and the second arc extinguishing frame. Both the first arc extinguishing frame and the second arc extinguishing frame are bent on the side away from each other, and main arc extinguishing grooves are formed on the side away from each other on both the first arc extinguishing frame and the second arc extinguishing frame.

[0012] Preferably, there are two auxiliary arc extinguishing modules, and the two auxiliary arc extinguishing modules are respectively installed on both sides of one end of the main arc extinguishing module.

[0013] Preferably, the auxiliary arc extinguishing module includes a vacuum chamber and a plurality of auxiliary arc extinguishing grid plates. The plurality of auxiliary arc extinguishing grid plates are arranged in sequence and spaced apart. The vacuum chamber is sleeved on the outer periphery of the plurality of auxiliary arc extinguishing grid plates, and both ends of the auxiliary arc extinguishing grid plates extend out of the vacuum chamber. The plurality of auxiliary arc extinguishing grid plates correspond to the plurality of first arc extinguishing frames one by one. The first end of the auxiliary arc extinguishing grid plate is connected to the second end of the first arc extinguishing frame. The second end of the auxiliary arc extinguishing grid plate is provided with a plurality of end grooves, and a plurality of auxiliary slot holes are also formed on the auxiliary arc extinguishing grid plate. The auxiliary slot holes are arranged close to the first end of the auxiliary arc extinguishing grid plate.

[0014] Preferably, there are two cleaning modules, which are respectively a first cleaning module and a second cleaning module. The first cleaning module is located on one side of the first arc extinguishing unit, and the second cleaning module is located on one side of the second arc extinguishing unit. The first cleaning module and the second cleaning module have the same structure and both include a limit plate, a support bracket, a pulling control plate and a plurality of cleaning sliding plates. The support bracket is installed on one side of the connecting outer frame, and the limit plate is slidably connected to the upper end of the support bracket. One end of the pulling control plate is connected to one side of the limit plate, and the other end of the pulling control plate extends away from the limit plate and can extend out of the circuit breaker. The plurality of cleaning sliding plates are arranged in sequence and at intervals, and each cleaning sliding plate is vertically installed on the upper end of the limit plate. One cleaning sliding plate corresponds to each adjacent pair of the first arc extinguishing sheets, and one cleaning sliding plate corresponds to each adjacent pair of the second arc extinguishing sheets. The pulling control plate can drive the limit plate to move towards or away from the middle of the connecting outer frame, and enable the cleaning sliding plates to clean between each adjacent pair of the first arc extinguishing sheets, or enable the cleaning sliding plates to clean between each adjacent pair of the second arc extinguishing sheets.

[0015] Preferably, a marking line is provided on the pulling control plate. When the cleaning sliding plate cleans the first arc extinguishing sheet or the second arc extinguishing sheet, the marking line is located inside the circuit breaker. When the cleaning sliding plate does not clean the first arc extinguishing sheet or the second arc extinguishing sheet, the marking line is located outside the circuit breaker.

[0016] The present invention has achieved the following technical effects compared with the prior art:

[0017] The arc extinguishing device for a circuit breaker provided by the present invention includes a main arc extinguishing module, an auxiliary arc extinguishing module and a cleaning module. The auxiliary arc extinguishing module is installed at one end of the main arc extinguishing module, and the main arc extinguishing module and the auxiliary arc extinguishing module are used to contact the arc in sequence and extinguish the arc. Through the cooperation of the main arc extinguishing module and the auxiliary arc extinguishing module to extinguish the arc, it is ensured that the arc is extinguished sufficiently, and the arc extinguishing effect is improved. The cleaning module is installed on one side of the main arc extinguishing module. Furthermore, when local ablation occurs inside the main arc extinguishing module, the cleaning module is used to clean the inside of the main arc extinguishing module, avoiding the deterioration of the arc extinguishing effect caused by adhesion inside the main arc extinguishing module, and prolonging the service life of the main arc extinguishing module sheets. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 This is a schematic structural view of the arc extinguishing device of the circuit breaker in the present invention at an angle;

[0020] Figure 2 This is a schematic structural view of the arc extinguishing device of the circuit breaker in the present invention at another angle;

[0021] Figure 3 This is a partial schematic structural view of the arc extinguishing device of the circuit breaker in the present invention;

[0022] Figure 4 This is a schematic structural view of the main arc extinguishing module in the present invention;

[0023] Figure 5 This is a schematic structural view of the first cleaning module in the present invention;

[0024] Figure 6 This is a schematic structural view of the auxiliary cleaning module in the present invention;

[0025] In the figure: 1 - First cleaning module, 2 - Second cleaning module, 3 - Fixed bolt, 4 - Connecting outer frame, 5 - Main arc extinguishing module, 6 - Auxiliary arc extinguishing module, 7 - First arc extinguishing frame, 8 - First arc extinguishing transverse cutting groove, 9 - First arc extinguishing piece, 10 - Fixed plate, 11 - Second arc extinguishing transverse cutting groove, 12 - Second arc extinguishing piece, 13 - Second arc extinguishing frame, 14 - Auxiliary transverse cutting plate, 15 - Main arc extinguishing groove, 16 - Cleaning sliding plate, 17 - Limiting plate, 18 - Support bracket, 19 - Pulling control plate, 20 - Identification line, 21 - Vacuum chamber, 22 - Auxiliary arc extinguishing grid piece, 23 - Auxiliary slot hole, 24 - End slot. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] The purpose of the present invention is to provide an arc extinguishing device for a circuit breaker to solve the problems existing in the prior art, achieve continuous and sufficient arc extinguishing, and have a long service life.

[0028] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0029] Such as Figures 1-6As shown in the figure, this embodiment provides a circuit breaker arc extinguishing device, which includes a main arc extinguishing module 5, an auxiliary arc extinguishing module 6 and a cleaning module. The auxiliary arc extinguishing module 6 is installed at one end of the main arc extinguishing module 5, and the main arc extinguishing module 5 and the auxiliary arc extinguishing module 6 are used to contact the arc in sequence and extinguish the arc. Through the cooperation of the main arc extinguishing module 5 and the auxiliary arc extinguishing module 6 to extinguish the arc, it is ensured that the arc is fully extinguished, the arc extinguishing effect is improved. The cleaning module is installed on one side of the main arc extinguishing module 5. Then, when local ablation occurs inside the main arc extinguishing module 5, the cleaning module is used to clean the inside of the main arc extinguishing module 5, avoiding the deterioration of the arc extinguishing effect caused by adhesion inside the main arc extinguishing module 5 and extending the service life of the main arc extinguishing module 5 sheets.

[0030] Specifically, the main arc extinguishing module 5 includes a plurality of arc extinguishing units, and adjacent arc extinguishing units are connected in sequence. The arc extinguishing unit located at one end is used to first contact the arc, and the arc extinguishing unit located at the other end is used to connect the auxiliary arc extinguishing module 6. Then, through multiple arc extinguishing units to extinguish the arc step by step, the arc extinguishing effect is improved, and it is convenient to achieve full arc extinguishing.

[0031] As a preferred solution, there are two arc extinguishing units, and the two arc extinguishing units are arranged symmetrically. The two arc extinguishing units are respectively the first arc extinguishing unit and the second arc extinguishing unit. The first end of the first arc extinguishing unit is connected to the second end of the second arc extinguishing unit, the second end of the first arc extinguishing unit is connected to the auxiliary arc extinguishing module 6, and the first end of the second arc extinguishing unit is used to first contact the arc, so that after the arc passes through the second arc extinguishing unit and the first arc extinguishing unit in sequence, it reaches the auxiliary arc extinguishing module 6 to be completely extinguished.

[0032] The first arc extinguishing unit includes a plurality of first arc extinguishing sheets 9 and a plurality of first arc extinguishing frames 7. The plurality of first arc extinguishing sheets 9 and the plurality of first arc extinguishing frames 7 correspond one by one. The plurality of first arc extinguishing sheets 9 are arranged closely and at intervals in sequence, and the plurality of first arc extinguishing frames 7 are arranged at intervals. The second arc extinguishing unit includes a plurality of second arc extinguishing sheets 12 and a plurality of second arc extinguishing frames 13. The plurality of second arc extinguishing sheets 12 and the plurality of second arc extinguishing frames 13 correspond one by one, and the plurality of second arc extinguishing sheets 12 are arranged at intervals, and the plurality of second arc extinguishing frames 13 are arranged closely and at intervals in sequence. Through the uniformly distributed second arc extinguishing sheets 12 and second arc extinguishing frames 13, as well as the first arc extinguishing sheets 9 and first arc extinguishing frames 7, the arc can be fully divided; the first end of the first arc extinguishing sheet 9 is used to connect the second end of the second arc extinguishing sheet 12, the second end of the first arc extinguishing sheet 9 is used to connect the first end of the first arc extinguishing frame 7, the second end of the first arc extinguishing frame 7 is used to connect the auxiliary arc extinguishing module 6, the first end of the second arc extinguishing sheet 12 is used to connect the second end of the second arc extinguishing frame 13, and the first end of the second arc extinguishing frame 13 is used to first contact the arc, so that the arc passes through the second arc extinguishing frame 13, the second arc extinguishing sheet 12, the first arc extinguishing sheet 9 and the first arc extinguishing frame 7 in sequence, improving the arc extinguishing effect.

[0033] The outer periphery of the main arc extinguishing module 5 is installed with a connecting outer frame 4 through fixing bolts 3, and the connecting outer frame 4 is connected to the outer periphery of the connection part of the first arc extinguishing piece 9 and the second arc extinguishing piece 12; a fixing plate 10 is installed between the first arc extinguishing piece 9 and the second arc extinguishing piece 12.

[0034] A number of first arc extinguishing transverse cutting grooves 8 are also formed on the first arc extinguishing piece 9, and a number of second arc extinguishing transverse cutting grooves 11 are also formed on the second arc extinguishing piece 12; both the first arc extinguishing frame 7 and the second arc extinguishing frame 13 are bent arc extinguishing frames, and a number of auxiliary transverse cutting plates 14 are installed inside both the first arc extinguishing frame 7 and the second arc extinguishing frame 13. The first arc extinguishing frame 7 and the second arc extinguishing frame 13 are both bent on the side away from each other, and a main arc extinguishing groove 15 is formed on the side away from each other for both the first arc extinguishing frame 7 and the second arc extinguishing frame 13. Moreover, the second arc extinguishing frame 13 and the auxiliary transverse cutting plates 14 and the main arc extinguishing groove 15 arranged inside can fully weaken the arc before the arc contacts and transmits to the second arc extinguishing piece 12, so that the arc is fully extinguished. When the arc passes through the second arc extinguishing piece 12, it can be transmitted to the first arc extinguishing piece 9. At this time, the first arc extinguishing frame 7 arranged on the first arc extinguishing piece 9, and the auxiliary transverse cutting plates 14 arranged inside the first arc extinguishing frame 7 and the main arc extinguishing groove 15 arranged in the middle can re-extinguish the arc.

[0035] There are two auxiliary arc extinguishing modules 6, and the two auxiliary arc extinguishing modules 6 are respectively installed on both sides of one end of the main arc extinguishing module 5.

[0036] The auxiliary arc extinguishing module 6 includes a vacuum chamber 21 and a plurality of auxiliary arc extinguishing grid pieces 22. The plurality of auxiliary arc extinguishing grid pieces 22 are arranged in sequence and at intervals. The vacuum chamber 21 is sleeved on the outer periphery of the plurality of auxiliary arc extinguishing grid pieces 22, and both ends of the auxiliary arc extinguishing grid piece 22 extend out of the vacuum chamber 21. The inside of the vacuum chamber 21 is evacuated. As another solution, a high-concentration inert gas can also be filled in the vacuum chamber 21, so that the arc entering the vacuum chamber 21 can be quickly extinguished. The plurality of auxiliary arc extinguishing grid pieces 22 correspond to the plurality of first arc extinguishing frames 7 one by one. The first end of the auxiliary arc extinguishing grid piece 22 is connected to the second end of the first arc extinguishing frame 7. A number of end grooves 24 are provided at the second end of the auxiliary arc extinguishing grid piece 22. A number of auxiliary slot holes 23 are also formed on the auxiliary arc extinguishing grid piece 22. The auxiliary slot holes 23 are arranged close to the first end of the auxiliary arc extinguishing grid piece 22. After the arc enters the auxiliary arc extinguishing grid piece 22, it can enter the vacuum chamber 21 and be fully extinguished. The auxiliary slot holes 23 and the end grooves 24 can also play a role in assisting arc extinguishing, realizing a full and stable arc extinguishing process.

[0037] The specific working process of this embodiment is as follows:

[0038] During the arc extinguishing process, the arc first contacts the second arc extinguishing frame 13. The uniformly distributed second arc extinguishing plates 12 and the second arc extinguishing frame 13 can fully divide the arc. Moreover, the arrangement of the second arc extinguishing frame 13, the auxiliary cross-cutting plate 14 and the main arc extinguishing groove 15 inside can sufficiently weaken the arc before it is transmitted to the second arc extinguishing plate 12, enabling the arc to be fully extinguished. And when the arc passes through the second arc extinguishing plate 12, it can be transmitted to the first arc extinguishing plate 9. At this time, the first arc extinguishing frame 7, the auxiliary cross-cutting plate 14 arranged inside the first arc extinguishing frame 7, and the main arc extinguishing groove 15 arranged in the middle of the first arc extinguishing frame 7 can achieve the re-extinguishing of the arc. During the process of the arc gradually being transmitted from the second arc extinguishing frame 13 to the first arc extinguishing frame 7, it can be fully extinguished. When the arc continues to be transmitted through the upper end of the first arc extinguishing frame 7, the arc will enter the auxiliary arc extinguishing grid 22 and then enter the vacuum chamber 21 to be fully extinguished. The auxiliary slots 23 and the end slots 24 arranged on the auxiliary arc extinguishing grid 22 also play an auxiliary role in arc extinguishing, enabling the arc extinguishing device of the circuit breaker in this embodiment to perform arc extinguishing treatment fully and stably.

[0039] After the arc extinguishing device of the circuit breaker in this embodiment is continuously used for a long time, the pull control board 19 slidably arranged outside the circuit breaker can control the limit board 17 to reciprocally slide on the support bracket 18. At this time, each uniformly distributed cleaning slide plate 16 is inserted between adjacent first arc extinguishing plates 9 and between adjacent second arc extinguishing plates 12, so that the ablation residues on the first arc extinguishing plates 9 and the second arc extinguishing plates 12 can be fully and timely scraped. Furthermore, the first arc extinguishing plates 9 and the second arc extinguishing plates 12 that are uniformly and closely arranged will not contact each other, enabling the first arc extinguishing plates 9 and the second arc extinguishing plates 12 to perform arc extinguishing treatment stably for a long time. At the same time, the service lives of the first arc extinguishing plates 9 and the second arc extinguishing plates 12 are also extended.

[0040] There are two cleaning modules, namely the first cleaning module 1 and the second cleaning module 2. The first cleaning module 1 is located on one side of the first arc extinguishing unit and is used to clean the inside of the first arc extinguishing unit. The second cleaning module 2 is located on one side of the second arc extinguishing unit and is used to clean the inside of the second arc extinguishing unit. The first cleaning module 1 and the second cleaning module 2 have the same structure and both include a limit plate 17, a support bracket 18, a pull control plate 19 and a plurality of cleaning sliding plates 16. The support bracket 18 is installed on one side of the connecting outer frame 4, and the limit plate 17 is slidably connected to the upper end of the support bracket 18. One end of the pull control plate 19 is connected to one side of the limit plate 17, and the pull control plate 19 can drive the limit plate 17 to move reciprocally. The other end of the pull control plate 19 extends in a direction away from the limit plate 17 and can extend out of the circuit breaker for easy operation. The plurality of cleaning sliding plates 16 are arranged in sequence and at intervals, and each cleaning sliding plate 16 is vertically installed on the upper end of the limit plate 17. One cleaning sliding plate 16 corresponds to each pair of adjacent first arc extinguishing plates 9, and one cleaning sliding plate 16 corresponds to each pair of adjacent second arc extinguishing plates 12. The pull control plate 19 can drive the limit plate 17 to move towards or away from the middle of the connecting outer frame 4, and make the cleaning sliding plate 16 clean between each pair of adjacent first arc extinguishing plates 9, or make the cleaning sliding plate 16 clean between each pair of adjacent second arc extinguishing plates 12.

[0041] A marking line 20 is provided on the pull control plate 19. When the cleaning sliding plate 16 cleans the first arc extinguishing plate 9 or the second arc extinguishing plate 12, the marking line 20 is located inside the circuit breaker. When the cleaning sliding plate 16 does not clean the first arc extinguishing plate 9 or the second arc extinguishing plate 12, the marking line 20 is located outside the circuit breaker. Thus, the marking line 20 plays a role in positioning and resetting the cleaning module. In the actual application process, the position of the cleaning sliding plate 16 can be intuitively judged by checking the position of the marking line 20, so that the cleaning sliding plate 16 is located outside the first arc extinguishing plate 9 and the second arc extinguishing plate 12 when not in use, avoiding affecting the normal use of the first arc extinguishing plate 9 and the second arc extinguishing plate 12.

[0042] In the present invention, specific examples are used to elaborate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. At the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A circuit breaker arc extinguishing device, characterized in that: It includes a main arc extinguishing module, an auxiliary arc extinguishing module and a cleaning module. The auxiliary arc extinguishing module is installed at one end of the main arc extinguishing module, and the main arc extinguishing module and the auxiliary arc extinguishing module are used to contact the arc and extinguish the arc in sequence. The cleaning module is installed on one side of the main arc extinguishing module, and the cleaning module is used to clean the inside of the main arc extinguishing module.

2. The circuit breaker arc extinguishing device according to claim 1, characterized in that: The main arc extinguishing module includes a plurality of arc extinguishing units, and the adjacent arc extinguishing units are connected in sequence, the arc extinguishing unit at one end is used to contact the arc first, and the arc extinguishing unit at the other end is used to connect the auxiliary arc extinguishing module.

3. The circuit breaker arc extinguishing device according to claim 2, characterized in that: There are two arc extinguishing units, and the two arc extinguishing units are arranged in mirror symmetry. The two arc extinguishing units are respectively a first arc extinguishing unit and a second arc extinguishing unit. The first end of the first arc extinguishing unit is connected to the second end of the second arc extinguishing unit, the second end of the first arc extinguishing unit is connected to the auxiliary arc extinguishing module, and the first end of the second arc extinguishing unit is used to first contact the arc.

4. The circuit breaker arc extinguishing device according to claim 3, characterized in that: The first arc extinguishing unit includes a plurality of first arc extinguishing sheets and a plurality of first arc extinguishing frames, the plurality of first arc extinguishing sheets and the plurality of first arc extinguishing frames correspond one to one, the plurality of first arc extinguishing sheets are arranged in sequence and are arranged at intervals, and the plurality of first arc extinguishing frames are arranged at intervals, the second arc extinguishing unit includes a plurality of second arc extinguishing sheets and a plurality of second arc extinguishing frames, the plurality of second arc extinguishing sheets and the plurality of second arc extinguishing frames correspond one to one, the plurality of second arc extinguishing sheets are arranged at intervals, and the plurality of second arc extinguishing frames are arranged in sequence and are arranged at intervals; the first end of the first arc extinguishing sheet is used to connect the second end of the second arc extinguishing sheet, the second end of the first arc extinguishing sheet is used to connect the first end of the first arc extinguishing frame, the second end of the first arc extinguishing frame is used to connect the auxiliary arc extinguishing module, the first end of the second arc extinguishing sheet is used to connect the second end of the second arc extinguishing frame, and the first end of the second arc extinguishing frame is used to first contact the arc.

5. The circuit breaker arc extinguishing device according to claim 4, characterized in that: A connecting outer frame is installed on the outer periphery of the main arc extinguishing module through fixing bolts, and the connecting outer frame is connected to the outer periphery of the connection between the first arc extinguishing piece and the second arc extinguishing piece; a fixing plate is installed between the first arc extinguishing piece and the second arc extinguishing piece.

6. The circuit breaker arc extinguishing device according to claim 4, characterized in that: The first arc-extinguishing plate is also provided with a plurality of first arc-extinguishing transverse grooves, and the second arc-extinguishing plate is also provided with a plurality of second arc-extinguishing transverse grooves; the first arc-extinguishing frame and the second arc-extinguishing frame are both bent arc-extinguishing frames, and a plurality of auxiliary transverse plates are installed inside the first arc-extinguishing frame and the second arc-extinguishing frame, the first arc-extinguishing frame and the second arc-extinguishing frame are both bent on the side away from each other, and the first arc-extinguishing frame and the second arc-extinguishing frame form main arc-extinguishing grooves on the side away from each other.

7. The circuit breaker arc extinguishing device according to claim 4, characterized in that: There are two auxiliary arc extinguishing modules, and the two auxiliary arc extinguishing modules are respectively installed on both sides of one end of the main arc extinguishing module.

8. The circuit breaker arc extinguishing device according to claim 7, characterized in that: The auxiliary arc-extinguishing module includes a vacuum chamber and a plurality of auxiliary arc-extinguishing grids, wherein the plurality of auxiliary arc-extinguishing grids are arranged in sequence and spaced apart, the vacuum chamber is sleeved on the outer circumference of the plurality of auxiliary arc-extinguishing grids, and both ends of the auxiliary arc-extinguishing grids extend out of the vacuum chamber, the plurality of auxiliary arc-extinguishing grids correspond one-to-one to the plurality of first arc-extinguishing frames, the first end of the auxiliary arc-extinguishing grid is connected to the second end of the first arc-extinguishing frame, the second end of the auxiliary arc-extinguishing grid is provided with a plurality of terminal grooves, the auxiliary arc-extinguishing grid is also provided with a plurality of auxiliary slot holes, and the auxiliary slot holes are arranged close to the first end of the auxiliary arc-extinguishing grid.

9. The arc extinguishing device for circuit breaker according to claim 5, characterized in that: There are two cleaning modules, and the two cleaning modules are respectively a first cleaning module and a second cleaning module, the first cleaning module is located on one side of the first arc extinguishing unit, and the second cleaning module is located on one side of the second arc extinguishing unit; the first cleaning module and the second cleaning module have the same structure, and both include a limit plate, a support bracket, a pull-out control plate and a plurality of cleaning sliding plates, the support bracket is installed on one side of the connecting outer frame, and the limit plate is slidably connected to the upper end of the support bracket, one end of the pull-out control plate is connected to one side of the limit plate, and the other end of the pull-out control plate is moved away from the limit plate The cleaning sliding plates extend in the direction and can extend to the outside of the circuit breaker, a plurality of the cleaning sliding plates are arranged in sequence and spaced apart, and each of the cleaning sliding plates is vertically installed on the upper end of the limiting plate, a cleaning sliding plate corresponds to between each two adjacent first arc-extinguishing plates, and a cleaning sliding plate corresponds to between each two adjacent second arc-extinguishing plates, the pulling control plate can drive the limiting plate to move toward or away from the middle of the connecting outer frame, and make the cleaning sliding plate clean between each two adjacent first arc-extinguishing plates, or make the cleaning sliding plate clean between each two adjacent second arc-extinguishing plates.

10. The circuit breaker arc extinguishing device according to claim 9, characterized in that: An identification line is provided on the pull-out control panel, and when the cleaning sliding plate cleans the first arc-extinguishing plate or the second arc-extinguishing plate, the identification line is located inside the circuit breaker, and when the cleaning sliding plate does not clean the first arc-extinguishing plate or the second arc-extinguishing plate, the identification line is located outside the circuit breaker.

Images