Circuit breaker device with zero-flashover arc extinguishing system
By introducing first and second arc-extinguishing chambers and an anti-free-flow filter layer into the circuit breaker, the problem of arcing in molded case circuit breakers is solved, achieving zero arcing effect, improving arc-extinguishing capability and service life, while reducing manufacturing costs.
Patent Information
- Application Number
- CN202423167033.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing molded case circuit breakers generate arcing when interrupting fault current, leading to equipment burnout and short circuits. Furthermore, traditional terminal cover structures are complex, increasing the size and cost of the circuit breaker.
The circuit breaker device with a zero-flying arc extinguishing system includes first and second arc extinguishing chambers, arc isolation components, and a free-ion filter layer. The free-ion filter layer, composed of multiple layers of sintered metal mesh and free-ion plates, achieves secondary arc extinguishing and adsorption of metal particles in the secondary arc extinguishing zone, thus avoiding the flying arc phenomenon.
It achieves zero arc flash in circuit breakers, improves arc extinguishing capability and service life, simplifies structure, reduces manufacturing costs, and ensures equipment safety and reliability.
Smart Images
Figure CN223665398U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to low voltage electrical apparatus technical field, concretely relates to a circuit breaker device with zero arc extinguishing system. BACKGROUND
[0002] As important electrical equipment of protecting circuit system, when short circuit, overload, under voltage and other faults appear in the circuit, the circuit breaker will actively cut off the current, thereby protecting the power distribution system, electrical equipment and the safety of workers. However, when cutting off the fault current, high temperature arc will be generated between the moving contact and the static contact, the arc is introduced into the arc extinguishing chamber in the circuit breaker through the arc leading sheet and the magnetic blowing effect to play the arc extinguishing effect, the arc is cut and the energy is absorbed by the arc extinguishing sheet in the arc extinguishing chamber to play the arc extinguishing effect. In actuality, due to the large breaking current, a small amount of charged free gas or residual arc will be sprayed out from the arc extinguishing chamber gas outlet under the action of airflow, the sprayed arc or high temperature metal particles will splash to the surrounding charged equipment, which can easily cause the burning of the surface of the equipment, and the splash outside the circuit breaker can cause the short circuit or burning of the surrounding line. Therefore, the existing method is to specially install a terminal cover for eliminating arc and blocking metal particles at the wiring end of the circuit breaker, and the structure of the terminal cover is complex, the installation occupies large space, the installation volume of the circuit breaker product is increased, and the manufacturing cost is increased. SUMMARY
[0003] Therefore, the utility model wants to overcome the problem that the existing plastic case circuit breaker will generate arc phenomenon, although the arc elimination effect can be achieved by installing the terminal cover, but the volume of the circuit breaker is obviously increased, the structure is complex, and the manufacturing cost is increased.
[0004] To solve the above technical problems, the utility model provides a circuit breaker device with zero arc extinguishing system, which comprises a primary arc extinguishing area, a secondary arc extinguishing area and a connecting port arranged in the circuit breaker body in sequence along the length direction of the circuit breaker body, a first arc extinguishing chamber body and a second arc extinguishing chamber body arranged in the primary arc extinguishing area and the secondary arc extinguishing area respectively, and an arc separation piece arranged between the first arc extinguishing chamber body and the second arc extinguishing chamber body, a plurality of through holes are arranged on the arc separation piece, the second arc extinguishing chamber body comprises at least one set of ionization elimination filter layer arranged in the secondary arc extinguishing area and opposite to the arc separation piece, the ionization elimination filter layer comprises two ionization elimination sheets arranged oppositely and an ionization elimination net clamped between the two ionization elimination sheets, and the two ionization elimination sheets are respectively provided with a plurality of filter holes.
[0005] In the above circuit breaker device, the ionization elimination net is composed of a plurality of layers of sintered metal nets stacked.
[0006] The mesh holes of the multi-layer sintered metal mesh are staggered and form a filter mesh structure; the multi-layer sintered metal mesh is divided into a sintered metal mesh protection layer, a sintered metal mesh filter layer, a sintered metal mesh separation layer and a sintered metal mesh support layer.
[0007] The ionization elimination sheet is made of a cold-rolled steel plate and is vertically inserted into the secondary arc extinguishing area through a slot structure.
[0008] The arc separation piece is made of a melamine plate and is vertically inserted into the secondary arc extinguishing area through a slot structure.
[0009] The slot structure is arranged in the middle of the secondary arc extinguishing area and is arranged in a U-shaped structure at the top and both side walls of the secondary arc extinguishing area, the upper end and the side edge of the ionization elimination sheet and the arc separation piece are respectively inserted into the corresponding slot structure, and the aperture of the through hole is larger than the aperture of the filter hole.
[0010] The circuit breaker body comprises an outgoing line connecting plate which is arranged in the primary arc extinguishing area, the secondary arc extinguishing area and the connecting port and is connected with the static contact, one end of the outgoing line connecting plate is provided with a wiring terminal in the connecting port, the ionization elimination sheet has a non-hole interception part which is abutted on the outgoing line connecting plate and does not have a filter hole, the arc separation piece has a non-hole interception part which is abutted on the outgoing line connecting plate and does not have a through hole, and the height of the non-hole interception part is not less than the height of the wiring terminal.
[0011] The second arc extinguishing chamber body further comprises a single arc elimination piece which is arranged between the arc separation piece and the ionization elimination filter layer.
[0012] The first arc extinguishing chamber body comprises a plurality of arc elimination grid sheets which are arranged in the primary arc extinguishing area in an inclined and stacked manner, the front end of the plurality of arc elimination grid sheets is provided with an arc running channel which is suitable for accommodating the contact of the movable contact and the static contact, and the rear end of the plurality of arc elimination grid sheets is arranged towards the arc separation piece.
[0013] The circuit breaker body is provided with a zero sequence transformer, a current transformer, a metering transformer and a thermal magnetic tripping mechanism, and an incoming line connecting plate which sequentially passes through the zero sequence transformer, the current transformer and the metering transformer and is connected with the movable contact, and the incoming line connecting plate is electrically connected with the thermal magnetic tripping mechanism.
[0014] Compared with the prior art, the technical scheme of the utility model has the following advantages:
[0015] 1. The circuit breaker device provided by the utility model, the arc extinguishing system of the circuit breaker mainly consists of the first arc extinguishing chamber arranged in the primary arc extinguishing area and the second arc extinguishing chamber arranged in the secondary arc extinguishing area, the arc generated by the breaking of the circuit breaker is introduced into the first arc extinguishing chamber first, the arc is cut and the energy is absorbed by the first arc extinguishing chamber to play the arc extinguishing role, after the primary arc extinguishing, a small amount of charged ionized gas and residual arc will be sprayed to the second arc extinguishing chamber, the arc is cut off by arranging the arc separation piece between the first arc extinguishing chamber and the second arc extinguishing chamber to prevent the arc from reigniting, then the multiple groups of ionization elimination filtering layers play the roles of secondary arc extinguishing, adsorbing metal particles and neutralizing ionized gas in the secondary arc extinguishing area, according to the fact that the ionization elimination filtering layer consists of two ionization elimination sheets and an ionization elimination net, the ionization elimination sheets can be used to extinguish residual arc and block some large metal particles, and the ionization elimination net can be used to more easily adsorb small metal particles and play the multiple ionization elimination processing on the charged ionized gas, so that the effect of absorbing and neutralizing the charged ionized gas is achieved, the activity is reduced, and the purpose of secondary arc extinguishing is finally realized, the flying arc phenomenon is avoided at the wiring end of the circuit breaker, the requirement of zero flying arc is better met, the arc extinguishing capacity and service life of the circuit breaker are improved, and the use is safe and reliable.
[0016] 2. The circuit breaker device provided by the utility model, the structure layout between the first arc extinguishing chamber and the second arc extinguishing chamber in the circuit breaker is reasonably optimized, the second arc extinguishing chamber is arranged in the secondary arc extinguishing area adjacent to the connecting port of the circuit breaker, the structure is simple, the installation is convenient, the occupied space is small, the traditional terminal cover mode is avoided, so that the manufacturing cost is reduced, and the secondary arc extinguishing and ionization elimination of the arc extinguishing system are realized in cooperation with the first arc extinguishing chamber, the arc and the charged ionized gas are prevented from being sprayed out of the circuit breaker, the breaking performance and service life of the circuit breaker are improved, and the safety and stability of the electrical performance of the equipment are ensured.
[0017] 3. The circuit breaker device provided by the utility model, the ionization elimination net is composed of multiple layers of sintered metal nets, the mesh holes of the multiple layers of sintered metal nets are staggered and form a filter net structure, the sintered metal net is manufactured through special lamination pressing and vacuum sintering processes, has high mechanical strength and overall rigid structure, the ionization elimination net of the technical scheme adopts the multiple layers of sintered metal nets to form a labyrinth type arc extinguishing filter structure, plays the ionization elimination role on the charged ionized gas through the multiple layers of sintered metal nets, is beneficial to the cooling of ionized gas and metal particles, and can block and filter the metal particles from being sprayed outwards, so that the purpose of eliminating flying arc is achieved, the purpose of zero flying arc is achieved, and the arc extinguishing capacity and breaking capacity of the circuit breaker are improved.
[0018] 4. The circuit breaker device provided by the utility model, according to the outgoing line connecting plate is extended in the primary arc extinguishing area, the secondary arc extinguishing area and the connecting port, the ionization elimination sheet and the arc separation piece are all provided with the non-hole intercepting part abutting on the outgoing line connecting plate, the design makes the non-hole intercepting part just block in front of the wiring terminal, and the electrified ionized gas and the arc are prevented from passing from the lower part of the ionization elimination sheet and the arc separation piece, the direct impact and erosion of the ionized gas and the arc on the wiring terminal are avoided, the ionized gas is ensured to only pass through the filter hole of the ionization elimination sheet, the ion in the ionized gas can be adsorbed and eliminated through the sintered metal net of the multi-layer structure design, the filtered metal particles can also be prevented from spraying outward, and the gas after the secondary arc extinguishing of the ionization elimination filter layer is also discharged from above the wiring terminal, so that the ablation damage of the wiring terminal and the wiring row at the connecting port is avoided, the functions of the secondary arc extinguishing and the ionization elimination are achieved. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme in the specific embodiment of the utility model or the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced as follows.
[0020] Figure 1 The sectional view of the circuit breaker device provided by the utility model is shown in the figure.
[0021] Figure 2 The sectional view of the circuit breaker device provided by the utility model is shown in the figure. Figure 1 The enlarged structural schematic view of the first arc extinguishing chamber body and the second arc extinguishing chamber body is shown in the figure.
[0022] Figure 3 The installation structural schematic view of the second arc extinguishing chamber body of the utility model is shown in the figure.
[0023] Figure 4 The sectional structure schematic view of the ionization elimination filter layer of the utility model is shown in the figure.
[0024] The figure mark explanation: 1, the first arc extinguishing chamber body; 2, the second arc extinguishing chamber body; 20, the ionization elimination filter layer; 21, the ionization elimination net; 22, the ionization elimination sheet; 23, the single arc elimination piece; 3, the arc separation piece; 4, the slot structure; 5, the non-hole intercepting part; 6, the movable contact; 7, the fixed contact; 8, the circuit breaker body; 81, the primary arc extinguishing area; 82, the secondary arc extinguishing area; 83, the connecting port; 84, the outgoing line connecting plate; 85, the incoming line connecting plate; 86, the wiring terminal; 91, the zero sequence mutual inductor; 92, the current mutual inductor; 93, the metering mutual inductor; 94, the thermal magnetic tripping mechanism. Specific embodiment
[0025] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.
[0026] In the description of the present application, it should be noted that the terms "first", "second", "third" are for descriptive purposes only and should not be understood as indicating or implying relative importance.
[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0028] Embodiment
[0029] The present embodiment will be described in detail below in conjunction with the drawings:
[0030] The present embodiment provides a circuit breaker device with zero flying arc arc extinguishing system as shown in Figures 1-4 The circuit breaker device with zero flying arc arc extinguishing system comprises a primary arc extinguishing area 81, a secondary arc extinguishing area 82 and a connecting port 83 arranged in the circuit breaker body 8 in sequence along the length direction of the circuit breaker body 8, and a first arc extinguishing chamber body 1 and a second arc extinguishing chamber body 2 arranged in the primary arc extinguishing area 81 and the secondary arc extinguishing area 82 respectively, and an arc separation piece 3 arranged between the first arc extinguishing chamber body 1 and the second arc extinguishing chamber body 2, wherein the arc separation piece 3 is provided with a plurality of through holes, the second arc extinguishing chamber body 2 comprises at least one group of ionization filter layers 20 arranged in the secondary arc extinguishing area 82 and opposite to the arc separation piece, the ionization filter layer 20 comprises two ionization sheets 22 arranged oppositely and an ionization net 21 clamped between the two ionization sheets 22, and the two ionization sheets 22 are respectively provided with a plurality of filter holes, the ionization net is clamped between the two ionization sheets 22 by the two ionization sheets 22 when being installed, which not only limits the installation position of the ionization net, but also improves the installation structural strength of the ionization net, and can better resist the impact of airflow, so that the ionization filter layer designed in this way has a good overall rigid structure, can play a multiple ionization and secondary arc extinguishing effect on ionized gas and arc, and thus improves the overall arc extinguishing and ionization capacity of the arc extinguishing system.
[0031] The above embodiment is the core technical scheme of the present embodiment, according to the circuit breaker arc extinguishing system mainly composed of the first arc extinguishing chamber 1 arranged in the primary arc extinguishing area and the second arc extinguishing chamber 2 arranged in the secondary arc extinguishing area, the arc generated by the circuit breaker is first introduced into the first arc extinguishing chamber 1, the arc is cut and the energy is absorbed by the first arc extinguishing chamber 1 to play an arc extinguishing role, after the primary arc extinguishing, a small amount of charged ionized gas and residual arc will be sprayed to the second arc extinguishing chamber 2, the arc is interrupted by the arc separation piece 3 arranged between the first arc extinguishing chamber 1 and the second arc extinguishing chamber 2 to prevent the arc from reigniting, then the multiple groups of ionization elimination filter layers 20 play the roles of secondary arc extinguishing, adsorbing metal particles and neutralizing ionized gas in the secondary arc extinguishing area 82, according to the ionization elimination filter layer 20 composed of two ionization elimination sheets 22 and an ionization elimination net 21, the ionization elimination sheets can extinguish residual arc and block some large metal particles, and the ionization elimination net can more easily adsorb small metal particles, the ionized gas can be subjected to multiple ionization elimination treatments, so as to achieve the effects of absorbing and neutralizing the ionized gas and reducing the activity, and finally realize the purpose of secondary arc extinguishing, avoid the arc flying phenomenon at the circuit breaker wiring end, and better achieve the requirement of zero arc flying, which is more environmentally friendly, improves the arc extinguishing ability and service life of the circuit breaker, and is safe and reliable in use.
[0032] The following will be described in detail Figures 1-4 The specific arrangement of the second arc extinguishing chamber will be described in detail:
[0033] The ionization elimination net 21 is composed of multiple layers of sintered metal nets stacked together, the mesh holes of the multiple layers of sintered metal nets are staggered and form a filter net structure, the sintered metal net is manufactured by special stacking, pressing and vacuum sintering processes, has high mechanical strength and overall rigidity, as a specific structure, the multiple layers of sintered metal nets of the present embodiment are divided into a sintered metal net protection layer, a sintered metal net filter layer, a sintered metal net separation layer and a sintered metal net support layer, the ionization elimination net 21 with the above structure is formed into a labyrinth arc extinguishing filter structure by the multiple layers of sintered metal nets, plays an ionization elimination role on the ionized gas, is beneficial to the cooling of the ionized gas and metal particles, and can block the metal particles from being sprayed outward, so as to achieve the purpose of eliminating arc flying and the purpose of zero arc flying, and improve the arc extinguishing ability and breaking capacity of the circuit breaker.
[0034] Further preferably, the ionization elimination sheet 22 is made of a cold-rolled steel plate and is vertically inserted into the secondary arc extinguishing area 82 through the slot structure 4, and plays a role of rapidly cooling the ionized gas and arc and intercepting the arc and ionized particles.
[0035] Further preferably, the arc separation piece 3 is made of melamine board and is vertically inserted into the secondary arc extinguishing area 82 through the slot structure 4. The arc separation piece made of melamine board has the characteristics of environmental protection, wear resistance, high temperature resistance and corrosion resistance, and can cut off the arc between the first arc extinguishing chamber and the second arc extinguishing chamber and prevent arc reignition.
[0036] In combination Figures 1-3 As shown, the slot structure 4 is provided in the middle of the secondary arc extinguishing area 82 and is arranged in a U-shaped structure at the top and both side walls of the secondary arc extinguishing area 82. The upper end and the side edge of the arc extinction sheet 22 and the arc separation piece 3 are respectively inserted into the corresponding slot structure 4. The slot structure 4 plays a limiting installation role in the secondary arc extinguishing area 82. According to the fact that the arc extinction net of each group of arc extinction filter layer 20 is composed of multiple layers of sintered metal nets, the two arc extinction sheets 2 are inserted and fixed in the slot structure, which will press the arc extinction net in the middle. The arc extinction net plays a role of installation support and improves the structural strength, prevents the multiple layers of sintered metal nets from being scattered and skewed due to airflow impact, and ensures the stability of the installation position of each group of arc extinction filter layer. The circuit breaker body 8 includes an outgoing line connecting plate 84 extending in the primary arc extinguishing area 81, the secondary arc extinguishing area 82 and the connecting port 83 and connected with the static contact 7. One end of the outgoing line connecting plate 84 is provided with a terminal 86 located in the connecting port 83. The arc extinction sheet 22 has a non-hole interception part 5 abutting on the outgoing line connecting plate 84 and not provided with a filter hole. The arc separation piece 3 has a non-hole interception part 5 abutting on the outgoing line connecting plate 84 and not provided with a through hole. The height of the non-hole interception part 5 is not less than the height of the terminal 86. A plurality of filter holes are distributed in the upper region of the arc extinction sheet 22 located on the upper side of the non-hole interception part. Similarly, a plurality of through holes are distributed in the upper region of the arc separation piece 3 located on the upper side of the non-hole interception part. This design makes the non-hole interception part 5 just in front of the terminal 86 and blocks the passage of the electrically charged ionized gas and arc from the lower part of the arc extinction sheet 22 and the arc separation piece 3, avoiding the direct impact and erosion of the terminal by the ionized gas and arc, ensuring that the ionized gas can only pass through the filter holes of the arc extinction sheet 22 and that the ionized ions in the ionized gas can be adsorbed and eliminated by the sintered metal net with multiple layer structure, and the filtered metal particles can also be prevented from being ejected outward. Finally, the gas after the secondary arc extinguishing of the arc extinction filter layer 20 is discharged from above the terminal, which will not cause ablation damage to the terminal and the wiring in the connecting port 83, playing a role of secondary arc extinguishing and ionization elimination.
[0037] In the embodiment, the second arc-extinguishing chamber body 2 further comprises a single arc-extinguishing piece 23 arranged between the arc separation piece 3 and the ionization filtering layer 20. The single arc-extinguishing piece 23 is also made of a cold-rolled steel plate and arranged in the secondary arc-extinguishing area through a slot structure, which can quickly cool and intercept the electric arc and ionized particles. According to the size of the secondary arc-extinguishing area, the second arc-extinguishing chamber body 2 can be installed in combination with the single arc-extinguishing piece 23 and the ionization filtering layer 20, or can be arranged in multiple groups of ionization filtering layers 20, which can effectively extinguish the arc and ionization.
[0038] In combination Figures 1-2 As shown in the figure, the first arc-extinguishing chamber body 1 comprises a plurality of arc-extinguishing grid pieces arranged in the primary arc-extinguishing area 81 in an inclined stack. The front end of the plurality of arc-extinguishing grid pieces is provided with an arc running channel suitable for accommodating the contact of the moving and static contacts 7. The rear end of the plurality of arc-extinguishing grid pieces is arranged towards the arc separation piece 3. This structure arrangement allows the arc generated when the moving and static contacts 7 are disconnected to be directly introduced into the first arc-extinguishing chamber body 1 for arc-extinguishing treatment. The ionized gas and residual arc generated after the first arc-extinguishing treatment will flow to the secondary arc-extinguishing area 82 under the action of the airflow, and then pass through the ionization filtering layer 20 arranged in multiple layers in the second arc-extinguishing chamber body 2 to achieve secondary arc-extinguishing and ionization filtering. The residual arc can also be extinguished. Finally, the arc-extinguishing gas after ionization filtering is discharged out of the circuit breaker, achieving the effect of zero flying arc. The circuit breaker device provided in the embodiment optimizes the structural layout of the two arc-extinguishing chamber bodies inside, embeds the second arc-extinguishing chamber body in the secondary arc-extinguishing area adjacent to the connection port of the circuit breaker, has a simple structure, is easy to install, occupies a small space, avoids using the traditional terminal cover, thereby reducing the manufacturing cost, and cooperates with the first arc-extinguishing chamber body to achieve secondary arc-extinguishing and ionization filtering, preventing the electric arc and ionized gas from being sprayed out of the circuit breaker, thereby improving the breaking performance and service life of the circuit breaker, and ensuring the safety of the equipment and the stability of the electrical performance.
[0039] In the embodiment, as Figure 1As shown, the circuit breaker body 8 is provided with a zero sequence transformer 91, a current transformer 92, a metering transformer 93 and a thermal magnetic trip unit 94, and a line connection plate 85 connected with the movable contact 6 through the zero sequence transformer 91, the current transformer 92 and the metering transformer 93 in sequence, the line connection plate 85 is electrically connected with the thermal magnetic trip unit 94, the zero sequence transformer 91 is mainly used for measuring and detecting the zero sequence current in the main circuit of the circuit breaker; the current transformer 92 is mainly used for measuring and monitoring the normal working current in the main circuit of the circuit breaker, converting high current into low current for measurement and protection; the metering transformer 93 is mainly used for measuring and detecting the electric quantity information in the main circuit of the circuit breaker, the thermal magnetic trip unit 94 is used for driving the molded case circuit breaker to perform the tripping and opening action when overload or short circuit fault occurs in the line, realizing the overload or short circuit protection of the circuit breaker.
[0040] Obviously, the above-mentioned embodiments are only examples for clearly illustrating the present application, and are not intended to limit the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments cannot be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.
Claims
1. A circuit breaker device with a zero-flying arc extinguishing system, characterized in that... The circuit breaker body (8) includes a primary arc-extinguishing zone (81), a secondary arc-extinguishing zone (82), and a connection port (83) that are sequentially connected and arranged along the length of the circuit breaker body (8). It also includes a first arc-extinguishing chamber (1) and a second arc-extinguishing chamber (2) that are respectively arranged in the primary arc-extinguishing zone (81) and the secondary arc-extinguishing zone (82). Furthermore, it includes an arc-isolating element (3) that is arranged between the first arc-extinguishing chamber (1) and the second arc-extinguishing chamber (2). The arc-isolating element (3) is provided with several through holes. The second arc-extinguishing chamber (2) includes at least one set of anti-free ionization filter layers (20) that are arranged in the secondary arc-extinguishing zone (82) and opposite to the arc-isolating element. The anti-free ionization filter layer (20) includes two anti-free ionization plates (22) arranged opposite to each other and an anti-free ionization mesh (21) sandwiched between the two anti-free ionization plates (22). The two anti-free ionization plates (22) are respectively provided with several filter holes.
2. The circuit breaker device with a zero-flying arc extinguishing system according to claim 1, characterized in that... The de-free mesh (21) is composed of multiple layers of sintered metal mesh stacked together.
3. The circuit breaker device with a zero-flying arc extinguishing system according to claim 2, characterized in that... The mesh openings of the multi-layer sintered metal mesh are interwoven to form a filter structure; The multi-layer sintered metal mesh consists of a sintered metal mesh protective layer, a sintered metal mesh filter layer, a sintered metal mesh separation layer, and a sintered metal mesh support layer.
4. The circuit breaker device with a zero-flying arc extinguishing system according to claim 1, characterized in that... The quenching plate (22) is made of cold-rolled steel plate and is vertically inserted into the secondary arc extinguishing zone (82) through a slot structure (4).
5. The circuit breaker device with a zero-flying arc extinguishing system according to claim 4, characterized in that... The arc-blocking component (3) is made of melamine board and is vertically inserted into the secondary arc-extinguishing zone (82) through a slot structure (4).
6. The circuit breaker device with a zero-flying arc extinguishing system according to claim 5, characterized in that... The slot structure (4) is provided in multiple spaces in the secondary arc extinguishing zone (82), and is arranged in a U-shape on the top and side walls of the secondary arc extinguishing zone (82). The upper ends and sides of the extinguishing plate (22) and the arc blocking member (3) are respectively inserted into the corresponding slot structure (4).
7. The circuit breaker device with a zero-flying arc extinguishing system according to any one of claims 1-6, characterized in that... The circuit breaker body (8) includes an outgoing connection plate (84) extending into the primary arc extinguishing zone (81), the secondary arc extinguishing zone (82) and the connection port (83) and connected to the stationary contact (7). One end of the outgoing connection plate (84) is provided with a terminal (86) located in the connection port (83). The anti-freezing plate (22) has a holeless intercepting part (5) that abuts against the outgoing connection plate (84) and does not have a filter hole. The arc blocking member (3) has a holeless intercepting part (5) that abuts against the outgoing connection plate (84) and does not have a through hole. The height of the holeless intercepting part (5) is not lower than the height of the terminal.
8. The circuit breaker device with a zero-flying arc extinguishing system according to claim 1, characterized in that... The second arc-extinguishing chamber (2) also includes a single arc-extinguishing component (23) disposed between the arc-isolating component (3) and the free-floating filter layer (20).
9. The circuit breaker device with a zero-flying arc extinguishing system according to claim 1, characterized in that... The first arc-extinguishing chamber (1) includes multiple arc-extinguishing grids arranged in an inclined stack in the primary arc-extinguishing zone (81). The front end of the multiple arc-extinguishing grids is provided with an arc-running channel suitable for accommodating the contact between the moving and stationary contacts, and the rear end of the multiple arc-extinguishing grids is arranged towards the arc-isolating member (3).
10. The circuit breaker device with a zero-flying arc extinguishing system according to claim 9, characterized in that... The circuit breaker body (8) is provided with a zero-sequence transformer (91), a current transformer (92), a metering transformer (93), and a thermomagnetic tripping mechanism (94), and an incoming line connection plate (85) that passes through the zero-sequence transformer (91), the current transformer (92), and the metering transformer (93) in sequence and connects to the moving contact (6). The incoming line connection plate (85) is electrically connected to the thermomagnetic tripping mechanism (94).