Circuit breaker arc striking structure and circuit breaker
By designing the arc-induced structure of the conductive plate and arc-induced plate in the circuit breaker, and combining the heat dissipation components to absorb and dissipate heat, the problem of the arc-blowing force of the circuit breaker decreases when the arc-running size becomes longer, and at the same time, the equipment is extended The service life is ensured and stable operation is ensured.
Patent Information
- Application Number
- CN202421155902.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-25
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-25
AI Technical Summary
When the arc-driven structure of the existing circuit breaker arc-induced arcing structure increases in length, the arc blowing force decreases, resulting in poor arc transfer speed and effect. At the same time, long-term overheating will accelerate the aging and wear of internal components of the equipment and shorten the equipment life.
A circuit breaker arc-induced structure is designed, including a conductive plate, arc-induced plate, bend and connector, combined with a heat dissipation component, including a heat dissipation window, a filter net, a heat dissipation fan, a heat conduction plate, a heat absorbing plate and a heat conduction groove, through The heat absorption plate absorbs heat, the heat conduction plate transfers heat to the cooling fan, and dissipates heat to the outside through the heat dissipation hole and the heat dissipation port.
While maintaining the strong arc blowing force, it effectively reduces the internal temperature of the circuit breaker, extends the service life of the equipment, reduces the possibility of failure, and ensures the continuous and stable operation of the circuit breaker.
Smart Images
Figure CN222462665U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit breakers, and more specifically, to an arc-starting structure of a circuit breaker and a circuit breaker. Background Art
[0002] A circuit breaker is a switching device that can close, carry and disconnect current under normal circuit conditions and can close, carry and disconnect current under abnormal circuit conditions within a specified time. When leakage, overload, short circuit and other faults occur in the system, the circuit breaker can quickly cut off the faulty mechanism in the system, or cut off the entire power supply to prevent the fault from expanding and avoid causing huge economic losses and casualties.
[0003] The prior art usually installs an arc-striking structure near the static contact to artificially set up a path for the arc so that the arc quickly leaves the moving and static contacts and enters the arc extinguishing chamber. However, the existing arc-striking structure will cause the arc blowing force to decrease when the arc path becomes longer, thereby weakening the arc transfer speed and effect.
[0004] In order to solve the above problems, the utility model with publication number CN216671542U discloses an arc striking structure and a circuit breaker. The technical effect achieved by this technical solution is that even when the arc track is long, it can provide a strong arc blowing force, so that the arc can be quickly and effectively transferred to the arc extinguishing chamber to be extinguished.
[0005] When the above-mentioned arc striking structure and circuit breaker are actually used, the arc striking structure of the circuit breaker may generate heat during operation. Long-term overheating will accelerate the aging and wear of internal components of the equipment, resulting in a shortened life of the equipment. At the same time, it may cause the equipment to become unstable during operation, thereby reducing the working efficiency of the equipment. Utility Model Content
[0006] In order to overcome the above defects of the prior art, the utility model provides a circuit breaker arc striking structure and a circuit breaker to solve the problems raised in the above background technology.
[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0008] A circuit breaker arc-striking structure comprises two conductive plates, arc-striking pieces are installed on one side of the two conductive plates, a bending portion is provided on one side of the two arc-striking pieces, a connector is provided on one end of the two arc-striking pieces, a connecting piece is installed on the rear side of the two connecting pieces, and a circuit breaker is installed on the rear side of the connecting piece;
[0009] A circuit breaker comprises a circuit breaker body, a circuit breaker housing is installed on the front side of the circuit breaker body, a rear housing is installed on the rear side of the circuit breaker housing, and a heat dissipation component is installed inside the rear housing;
[0010] The heat dissipation component includes a heat dissipation window, a filter is fixedly connected inside the heat dissipation window, two first heat dissipation fans are installed on the left side of the filter, a heat conducting plate is arranged on the left side of the two first heat dissipation fans, a heat absorbing plate is installed on the right side of the two heat conducting plates, a plurality of heat conducting grooves are provided on the right side of the heat absorbing plate, two heat dissipation holes are provided on the top of both sides of the rear shell, heat dissipation ports are provided on the bottom of both sides of the rear shell, second heat dissipation fans are installed on one side of the two heat dissipation ports, and brackets are fixedly connected to the front sides of the two second heat dissipation fans.
[0011] By adopting the above technical solution: the rear shell is detachably connected to the rear side of the circuit breaker shell by screws, the heat dissipation window is installed inside the filter, the two first heat dissipation fans are installed on the front side of the filter, the two heat conduction plates are installed on the left side of the first heat dissipation fan, the heat absorption plate is installed on the left side of the two heat conduction plates, and a plurality of heat conduction grooves are provided on the right side of the heat absorption plate, two heat dissipation holes are provided on the top of both sides of the rear shell, the two heat dissipation ports are installed on the bottom of both sides of the rear shell, the two second heat dissipation fans are installed on one side of the heat dissipation port, and the rear sides of the two second heat dissipation fans are fixedly connected to one side of the bracket.
[0012] As a further description of the above technical solution: a connecting plate is installed on the left side of the heat absorbing plate, three first mounting plates are installed inside the top end of the rear housing, and a plurality of first mounting holes are opened inside the top end of the three first mounting plates.
[0013] By adopting the above technical solution: the connecting plate is bonded and fixed to the left side of the heat absorbing plate, the three first mounting plates are all installed inside the top end of the rear housing, and a plurality of first mounting holes are opened inside the top end of the three first mounting plates.
[0014] As a further description of the above technical solution: three second mounting plates are installed at the bottom of the rear shell, a plurality of second mounting holes are installed inside the bottom ends of the three second mounting plates, and a thermal sensor is installed at the top of the rear shell.
[0015] By adopting the above technical solution: three second mounting plates are installed inside the bottom end of the rear housing, and a plurality of second mounting holes are opened at the bottom ends of the three second mounting plates.
[0016] As a further description of the above technical solution: two fault indicator lights are installed on the top of the circuit breaker housing, a plurality of upper wire fixing holes are opened on the front side of the top end of the circuit breaker housing, and a plurality of lower wire fixing holes are opened on the front side of the bottom end of the circuit breaker housing.
[0017] By adopting the above technical solution: two fault indicator lights are installed on the top of the circuit breaker housing, a plurality of upper wire fixing holes are opened on the front side of the top of the circuit breaker housing, and a plurality of upper wire fixing holes are opened on the front side of the bottom of the circuit breaker housing.
[0018] As a further description of the above technical solution: a push-pull handle is installed on the front side of the circuit breaker housing, and a fixing plate is fixedly connected to the rear side of the circuit breaker housing.
[0019] By adopting the above technical solution: the push-pull handle is installed on the front side of the second cooling fan, and the fixing plate is welded and fixed to the front side of the rear housing.
[0020] As a further description of the above technical solution: the filter is fixedly connected to the inside of the heat dissipation window by screws, the two heat conduction plates are bonded and fixed to the right side of the heat absorption plate, and the two brackets are fixed to both sides of the inner wall of the rear shell by screws.
[0021] By adopting the above technical solution: the heat dissipation window and the inside of the filter are detachably connected by screws, the two heat conduction plates are both bonded and fixed to the left side, and the inside of the rear shell on both sides are connected to the inside of the bracket with threads.
[0022] As a further description of the above technical solution: the three first mounting plates are evenly distributed on the top of the rear shell, and the three second mounting plates are evenly distributed inside the rear shell.
[0023] By adopting the above technical solution: the three first mounting plates are evenly distributed on the top of the rear housing, and the three second mounting plates are evenly distributed inside the rear housing.
[0024] Technical effects and advantages of the utility model:
[0025] 1. By setting up a heat dissipation component, compared with the prior art, the heat of the connecting plate is absorbed and transferred to the two heat conducting plates by the heat absorbing plate, and then the air inside the rear housing is convected with the external air by the two brackets, so as to reduce the internal temperature of the rear housing and prevent failure or damage caused by overheating, which helps to ensure the continuous and stable operation of the circuit breaker, reduce the possibility of failure, and extend the service life of the circuit breaker;
[0026] 2. By setting the first mounting plate, the first mounting hole and the fixing plate, compared with the prior art, the circuit breaker housing can be installed in a suitable position through the fixing plate, and the circuit breaker is fixed by using the first mounting plate and the first mounting hole, thereby enhancing the stability of the connection between the circuit breaker and the surrounding equipment or structure, helping to prevent the circuit breaker from loosening and improving the overall structural strength. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0028] Figure 2 This is a schematic diagram of the first mounting plate structure of the utility model.
[0029] Figure 3This is a schematic diagram of the filter structure of the utility model.
[0030] Figure 4 It is a schematic diagram of the heat dissipation hole structure of the utility model.
[0031] Figure 5 This is a schematic diagram of the heat conduction plate structure of the utility model.
[0032] Figure 6 It is a schematic diagram of the heat dissipation port structure of the utility model.
[0033] Figure 7 It is a schematic diagram of the arc-starting piece structure of the utility model.
[0034] The accompanying drawings are marked as follows: 1. circuit breaker housing; 2. rear housing; 3. heat dissipation window; 4. filter; 5. first cooling fan; 6. heat conducting plate; 7. heat absorbing plate; 8. heat conducting groove; 9. heat dissipation hole; 10. heat dissipation port; 11. second cooling fan; 12. bracket; 13. connecting plate; 14. first mounting plate; 15. first mounting hole; 16. second mounting plate; 17. second mounting hole; 18. heat sensor; 19. fault indicator light; 20. upper end wire fixing hole; 21. lower end wire fixing hole; 22. push-pull handle; 24. fixing plate; 25. conductive plate; 26. arc-starting plate; 27. bending point; 28. connector; 29. connecting plate; 30. circuit breaker body. DETAILED DESCRIPTION
[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0036] The embodiment of the present application discloses an arc-striking structure of a circuit breaker, comprising two conductive plates 25, arc-striking pieces 26 are installed on one side of the two conductive plates 25, a bending portion 27 is provided on one side of the two arc-striking pieces 26, a connector 28 is provided on one end of the two arc-striking pieces 26, a connecting piece 29 is installed on the rear side of the two connecting pieces 28, and a circuit breaker is installed on the rear side of the connecting piece 29;
[0037] A circuit breaker comprises a circuit breaker body 30, a circuit breaker housing 1 is installed on the front side of the circuit breaker body 30, a rear housing 2 is installed on the rear side of the circuit breaker housing 1, and a heat dissipation component is installed inside the rear housing 2;
[0038] The heat dissipation component includes a heat dissipation window 3, a filter screen 4 is fixedly connected inside the heat dissipation window 3, two first heat dissipation fans 5 are installed on the left side of the filter screen 4, a heat conducting plate 6 is arranged on the left side of the two first heat dissipation fans 5, a heat absorbing plate 7 is installed on the right side of the two heat conducting plates 6, and a plurality of heat conducting grooves 8 are provided on the right side of the heat absorbing plate 7. Two heat dissipation holes 9 are provided on the top of both sides of the rear shell 2, heat dissipation ports 10 are provided on the bottom of both sides of the rear shell 2, and second heat dissipation fans 11 are installed on one side of the two heat dissipation ports 10. The front sides of the two second heat dissipation fans 11 are fixedly connected with brackets 12. The heat absorbing plate 7 is used to absorb the heat inside the connecting plate 13, and the heat is gathered through the heat conducting grooves 8, so that the two heat conducting plates 6 transfer the heat to the first heat dissipation fans 5, and the heat on the surface of the heat conducting plate 6 is dissipated to the outside through the two first heat dissipation fans 5. At the same time, the two second heat dissipation fans 11 are used to convect the air inside the rear shell 2 with the external air, so as to quickly dissipate the heat inside the rear shell 2, which helps to ensure the continuous and stable operation of the circuit breaker.
[0039] Reference Figure 2 As shown, a connecting plate 13 is installed on the left side of the heat absorbing plate 7, and three first mounting plates 14 are installed inside the top of the rear housing 2. A plurality of first mounting holes 15 are opened inside the top of the three first mounting plates 14. The three first mounting plates 14 are used to facilitate the installation of the circuit breaker housing 1, and the circuit breaker housing 1 can be fixed through the plurality of first mounting holes 15, which helps to prevent the connection of the circuit breaker housing 1 from loosening or falling off due to other factors.
[0040] Reference Figure 2 As shown, three second mounting plates 16 are installed at the bottom of the rear housing 2, and multiple second mounting holes 17 are installed inside the bottom ends of the three second mounting plates 16. A thermal sensor 18 is installed on the top of the rear housing 2. The multiple second mounting holes 17 help to fix the circuit breaker housing 1 and make it easier to install and disassemble. The thermal sensor 18 is used to detect the temperature inside the rear housing 2.
[0041] Reference Figure 1 As shown, two fault indicator lights 19 are installed on the top of the circuit breaker housing 1, a plurality of upper wire fixing holes 20 are installed on the front side of the top end of the circuit breaker housing 1, and a plurality of lower wire fixing holes 21 are installed on the front side of the bottom end of the circuit breaker housing 1. The two fault indicator lights 19 are convenient for reminding the staff of the occurrence of internal faults in the circuit breaker housing 1, so that the staff can quickly perform maintenance.
[0042] Reference Figure 6 As shown, a push-pull handle 22 is installed on the front side of the circuit breaker housing 1, and a fixing plate 24 is fixedly connected to the rear side of the circuit breaker housing 1. The second cooling fan 11 can be installed at a suitable position through the fixing plate 24, providing a stable connection point for the circuit breaker housing 1.
[0043] Working principle of the utility model: The utility model designs a circuit breaker arc striking structure and a circuit breaker. The specific structure is as shown in the attached manual. Figure 1-6 As shown, in the technical solution, through the mutual cooperation between various structures, the circuit breaker is first installed in a suitable position through the fixing plate 24, and then fixed through the first mounting holes 15 inside the first mounting plate 14 and the second mounting holes 17 inside the second mounting plate 16, which is convenient for providing a stable connection point for the circuit breaker and is convenient for installation and maintenance. When the operating temperature inside the circuit breaker housing 1 is high, the two heat dissipation holes 9 at the top of the circuit breaker housing 1 will light up to remind the staff, and the heat sensor 18 will detect the temperature inside the circuit breaker housing 1 and detect the temperature according to the temperature. The two first cooling fans 5 and the bracket 12 are started for the second time, and the surface temperature of the connecting plate 13 is absorbed by the heat absorbing plate 7 and the temperature is gathered through the multiple heat conducting grooves 8, so that the two heat conducting plates 6 can transfer the heat. The two first cooling fans 5 rotate to dissipate the heat of the heat conducting plates 6 to the external air. Finally, the external air is allowed to flow into the rear housing 2 through the multiple heat dissipation holes 9, and the two second cooling fans 11 are used to convect the air inside the rear housing 2 with the outside, so as to quickly dissipate the internal heat of the rear housing 2 to the outside and reduce the internal temperature of the rear housing 2.
[0044] Among them, the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;
[0045] Finally: The above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A circuit breaker arc striking structure, comprising two conductive plates (25), characterized in that: An arc-starting piece (26) is installed on one side of the two conductive plates (25), a bending portion (27) is provided on one side of the two arc-starting pieces (26), a connector (28) is provided on one end of the two arc-starting pieces (26), a connecting piece (29) is installed on the rear side of the two connecting pieces (28), and a circuit breaker is installed on the rear side of the connecting piece (29); A circuit breaker comprises a circuit breaker body (30), a circuit breaker housing (1) being mounted on the front side of the circuit breaker body (30), a rear housing (2) being mounted on the rear side of the circuit breaker housing (1), and a heat dissipation component being mounted inside the rear housing (2); The heat dissipation component comprises a heat dissipation window (3), a filter screen (4) is fixedly connected inside the heat dissipation window (3), two first heat dissipation fans (5) are installed on the left side of the filter screen (4), a heat conduction plate (6) is arranged on the left side of the two first heat dissipation fans (5), a heat absorption plate (7) is installed on the right side of the two heat conduction plates (6), and a plurality of heat conduction grooves (8) are provided on the right side of the heat absorption plate (7), two heat dissipation holes (9) are provided on the top of both sides of the rear housing (2), heat dissipation ports (10) are provided on the bottom of both sides of the rear housing (2), a second heat dissipation fan (11) is installed on one side of the two heat dissipation ports (10), and a bracket (12) is fixedly connected to the front side of the two second heat dissipation fans (11).
2. The arc striking structure of a circuit breaker according to claim 1, characterized in that: A connecting plate (13) is installed on the left side of the heat absorbing plate (7), and three first mounting plates (14) are installed inside the top end of the rear housing (2), and a plurality of first mounting holes (15) are provided inside the top ends of the three first mounting plates (14).
3. The arc striking structure of a circuit breaker according to claim 2, characterized in that: Three second mounting plates (16) are mounted on the bottom of the rear housing (2), a plurality of second mounting holes (17) are mounted inside the bottom ends of the three second mounting plates (16), and a heat sensor (18) is mounted on the top of the rear housing (2).
4. The arc striking structure of a circuit breaker according to claim 1, characterized in that: Two fault indicator lights (19) are installed on the top of the circuit breaker housing (1), a plurality of upper wire fixing holes (20) are installed on the front side of the top end of the circuit breaker housing (1), and a plurality of lower wire fixing holes (21) are installed on the front side of the bottom end of the circuit breaker housing (1).
5. The arc striking structure of a circuit breaker according to claim 1, characterized in that: A push-pull handle (22) is installed on the front side of the circuit breaker housing (1), and a fixing plate (24) is fixedly connected to the rear side of the circuit breaker housing (1).
6. The arc striking structure of a circuit breaker according to claim 1, characterized in that: The filter (4) is fixedly connected to the inside of the heat dissipation window (3) by means of screws, the two heat conducting plates (6) are both bonded and fixed to the right side of the heat absorbing plate (7), and the two brackets (12) are both fixed to the inner walls of the rear housing (2) by means of screws.
7. The arc striking structure of a circuit breaker according to claim 3, characterized in that: The three first mounting plates (14) are evenly distributed on the top of the rear housing (2), and the three second mounting plates (16) are evenly distributed inside the rear housing (2).