Vacuum circuit breaker with protection structure

Abstract

The utility model relates to the field of vacuum circuit breakers, in particular to a vacuum circuit breaker with a protection structure, which comprises a vacuum circuit breaker base, a main body used for bearing the vacuum circuit breaker, and a vacuum circuit breaker execution box body arranged above the vacuum circuit breaker base and used for completing vacuum circuit breaking. The vacuum circuit breaker is provided with the vacuum circuit breaker execution box body, the side protection plate, the voltage monitor, the alarm, the overvoltage protection cavity, the lightning arrester and the overvoltage conductive needle, so that when the vacuum circuit breaker is used outdoors, the voltage monitor outside the vacuum circuit breaker execution box body can monitor the internal voltage condition of the whole vacuum circuit breaker in real time; when overvoltage occurs, an alarm is given out in time through the alarm, the safety of equipment is improved, then the overvoltage protection cavity, the lightning arrester and the overvoltage conductive needle at the top of the vacuum circuit breaker execution box body can effectively prevent the impact of lightning overvoltage on the vacuum circuit breaker, and the equipment is protected from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of vacuum circuit breakers, specifically to a vacuum circuit breaker with a protective structure. Background Technology

[0002] A vacuum circuit breaker is a circuit breaker with a vacuum interrupter chamber, also known as a circuit breaker where arc extinguishing can occur in a vacuum medium. It uses vacuum connecting electrodes as the arc extinguishing medium and can quickly cut off the current when a circuit fault occurs, thereby protecting the circuit and equipment from damage. The main structure of a vacuum circuit breaker consists of a vacuum interrupter chamber, an operating mechanism, and an insulating support frame. As one of the key devices in the power system, vacuum circuit breakers have broad application prospects and development potential.

[0003] A search revealed a vacuum circuit breaker with publication number CN218384980U, specifically disclosing a vacuum circuit breaker comprising: a housing with a cavity, the cavity being open and communicating with the outside air; a vacuum interrupter tube disposed in the housing and housed within the cavity; a first heat sink component disposed at one end of the vacuum interrupter tube and thermally communicating with that end; and a second heat sink component disposed at the other end of the vacuum interrupter tube and thermally communicating with that end. This invention enhances heat dissipation.

[0004] During use, existing vacuum circuit breakers are susceptible to damage or failure due to the lack of protective structures, especially when used outdoors, as they are vulnerable to lightning overvoltages and voltage anomalies. In the comparative case mentioned above, the vacuum circuit breakers also lack protective structures. Consequently, under long-term use, the vacuum circuit breakers cannot provide timely warnings when they encounter faults, leading to reduced equipment performance, maintenance difficulties, and a shortened service life.

[0005] Therefore, it is necessary to invent a vacuum circuit breaker with a protective structure to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a vacuum circuit breaker with a protective structure. This structure, achieved through the vacuum circuit breaker's actuator housing, side protection plate, voltage monitor, alarm, overvoltage protection chamber, surge arrester, and overvoltage conductive needle, enhances the safety and lifespan of the equipment. It also allows operators to easily monitor the voltage status, promptly identify and address potential problems. Furthermore, this protective structure design improves the safety and reliability of the vacuum circuit breaker, enhances arc-extinguishing performance, and facilitates maintenance. This addresses the problem in existing vacuum circuit breakers where, due to varying operating environments, the lack of a protective structure makes them susceptible to lightning overvoltages and voltage anomalies, leading to damage or malfunctions, especially outdoors. The comparative vacuum circuit breakers also lack this protective structure, resulting in delayed fault warnings, performance degradation, maintenance difficulties, and shortened lifespan over long-term use.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a vacuum circuit breaker with a protective structure, including a vacuum circuit breaker base for supporting the main body of the vacuum circuit breaker;

[0008] A vacuum circuit breaker actuator housing is located above the vacuum circuit breaker base and is used to complete vacuum circuit breaking. A vacuum interrupter chamber is fixedly installed on the back of the vacuum circuit breaker actuator housing. Positioning sleeves are provided on both sides of the outer side of the vacuum circuit breaker actuator housing. Positioning columns are movably connected inside the positioning sleeves. Side protection plates are fixedly installed on the outside of the positioning columns.

[0009] A voltage monitor is installed at the front of the vacuum circuit breaker housing for voltage monitoring. A first connecting line is fixedly connected to the bottom of the voltage monitor, and an alarm is fixedly installed at the other end of the first connecting line. A second connecting line is fixedly connected to the outside of the voltage monitor.

[0010] An overvoltage protection chamber is located above the vacuum circuit breaker's control box and is used for overvoltage relief and conduction. A threaded groove is provided on the top of the overvoltage protection chamber, and a threaded rod is movably connected inside the threaded groove. A surge arrester is fixedly installed at the top of the threaded rod. Second external wiring is connected to both sides of the overvoltage protection chamber. An external wire clamp is provided outside the second external wiring, and an overvoltage conductive needle is fixedly connected to the other end of the second external wiring.

[0011] Preferably, a bottom mounting plate is fixedly installed on the outside of the vacuum circuit breaker base, and an adjustment groove is provided on the top of the bottom mounting plate, with a positioning bolt movably connected inside the adjustment groove.

[0012] Preferably, the side protection plate is movably connected to the vacuum circuit breaker housing, and the positioning sleeve is used in conjunction with the positioning column.

[0013] Preferably, the other end of the second connecting line is fixedly connected to a vacuum interrupter, and the vacuum circuit breaker actuator housing is provided with a heat dissipation window on the outside.

[0014] Preferably, the surge arrester is threadedly connected to the overvoltage protection cavity, and the threaded groove is used in conjunction with the threaded rod.

[0015] Preferably, a first external wiring is fixedly connected to one side of the overpressure protection cavity, and a vacuum interrupter is fixedly connected to the other end of the first external wiring.

[0016] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0017] This utility model includes a vacuum circuit breaker execution box, a side protection plate, a voltage monitor, an alarm, an overvoltage protection chamber, a surge arrester, and an overvoltage conductive needle. When the vacuum circuit breaker is used outdoors, the voltage monitor located outside the execution box can monitor the voltage inside the entire vacuum circuit breaker in real time. In the event of an overvoltage, the alarm will promptly sound, improving equipment safety. Furthermore, the overvoltage protection chamber, surge arrester, and overvoltage conductive needle on the top of the execution box effectively prevent lightning overvoltage from impacting the vacuum circuit breaker, protecting the equipment from damage. They also divert overvoltage current from the vacuum circuit breaker, preventing overvoltage from reaching the circuit breaker. Voltage and current are rapidly discharged, and this current-conducting effect helps prevent overvoltage from damaging the vacuum interrupter and its surrounding equipment. Finally, upper protective plates can be installed on both sides of the vacuum circuit breaker's control box to protect the entire vacuum circuit breaker assembly. This combination of features gives the vacuum circuit breaker a protective structure, which further improves the safety of the equipment, extends its service life, and allows operators to easily monitor the voltage status of the equipment, promptly identify and address potential problems. At the same time, this protective structure design also improves the safety and reliability of the vacuum circuit breaker, enhances its arc-extinguishing performance, and facilitates maintenance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2This is a schematic diagram of the side protection plate structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the heat dissipation window structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the surge arrester structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the overvoltage conductive needle structure of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Vacuum circuit breaker base; 2. Vacuum circuit breaker actuator housing; 3. Vacuum interrupter chamber; 4. Bottom mounting plate; 5. Adjustment groove; 6. Positioning bolt; 7. Positioning sleeve; 8. Positioning column; 9. Side protection plate; 10. Voltage monitor; 11. First connecting wire; 12. Alarm; 13. Second connecting wire; 14. Heat dissipation window; 15. Overvoltage protection chamber; 16. Threaded groove; 17. Threaded rod; 18. Surge arrester; 19. First external wiring; 20. Second external wiring; 21. External wire clamp; 22. Overvoltage conductive needle. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figure 1-5 The vacuum circuit breaker shown has a protective structure, including a vacuum circuit breaker base 1 for supporting the main body of the vacuum circuit breaker.

[0028] The vacuum circuit breaker execution box 2 is located above the vacuum circuit breaker base 1 and is used to complete vacuum circuit breaking. A vacuum interrupter 3 is fixedly installed on the back of the vacuum circuit breaker execution box 2. Positioning sleeves 7 are provided on both sides of the vacuum circuit breaker execution box 2. Positioning columns 8 are movably connected inside the positioning sleeves 7. Side protection plates 9 are fixedly installed on the outside of the positioning columns 8.

[0029] A voltage monitor 10 is installed in front of the vacuum circuit breaker housing 2 for voltage monitoring. A first connecting line 11 is fixedly connected to the bottom of the voltage monitor 10, and an alarm 12 is fixedly installed at the other end of the first connecting line 11. A second connecting line 13 is fixedly connected to the outside of the voltage monitor 10.

[0030] An overvoltage protection chamber 15 is located above the vacuum circuit breaker execution box 2 and is used for overvoltage relief and conduction. A threaded groove 16 is provided on the top of the overvoltage protection chamber 15, and a threaded rod 17 is movably connected inside the threaded groove 16. A surge arrester 18 is fixedly installed at the top of the threaded rod 17. Second external wiring 20 is connected to both sides of the overvoltage protection chamber 15. An external wire clamp 21 is provided outside the second external wiring 20. An overvoltage conductive needle 22 is fixedly connected to the other end of the second external wiring 20. The overvoltage protection chamber 15, surge arrester 18 and overvoltage conductive needle 22 on the top of the vacuum circuit breaker execution box 2 can effectively prevent the impact of lightning overvoltage on the vacuum circuit breaker, protect the equipment from damage, and also conduct overvoltage of the vacuum circuit breaker, so that the overvoltage current can be quickly discharged. This conduction effect helps to prevent overvoltage from damaging the vacuum interrupter 3 and its surrounding equipment.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, a base mounting plate 4 is fixedly installed on the outside of the vacuum circuit breaker base 1. An adjustment groove 5 is provided on the top of the base mounting plate 4. A positioning bolt 6 is movably connected inside the adjustment groove 5. The base mounting plate 4, the adjustment groove 5, and the positioning bolt 6 facilitate the installation and use of the vacuum circuit breaker in different environments and positions. The side protection plate 9 is movably connected to the vacuum circuit breaker execution box 2. The positioning sleeve 7 is used in conjunction with the positioning column 8. The side protection plate 9 can also be installed on both sides of the vacuum circuit breaker execution box 2 to protect the entire vacuum circuit breaker assembly. The other end of the second connecting line 13 is fixedly connected to the vacuum interrupter 3. The vacuum circuit breaker execution box 2 is provided with heat dissipation windows 14 on the outside. The heat dissipation windows 14 on both sides of the vacuum circuit breaker execution box 2 are used to assist the internal execution components in heat dissipation.

[0032] like Figure 1 , Figure 4 and Figure 5 As shown, the surge arrester 18 is threadedly connected to the overvoltage protection chamber 15, and the threaded groove 16 and the threaded rod 17 work together. The surge arrester 18 and the overvoltage conductive needle 22 can effectively prevent the impact of lightning overvoltage on the vacuum circuit breaker and protect the equipment from damage. The first external wiring 19 is fixedly connected to one side of the overvoltage protection chamber 15, and the other end of the first external wiring 19 is fixedly connected to the vacuum interrupter 3. The overvoltage protection chamber 15 can also conduct overvoltage of the vacuum circuit breaker, so that the overvoltage current can be quickly discharged.

[0033] The working principle of this utility model is as follows: First, take out the vacuum circuit breaker at the desired installation location. Install the device directly using the base mounting plate 4, adjustment groove 5, and positioning bolts 6 of the vacuum circuit breaker base 1. Then, connect the external power supply. When using the vacuum circuit breaker outdoors, the voltage monitor 10 located outside the vacuum circuit breaker execution box 2 can monitor the internal voltage of the entire vacuum circuit breaker in real time. In case of overvoltage, the alarm 12 will promptly issue an alarm, improving equipment safety. Subsequently, the overvoltage protection chamber 15, surge arrester 18, and overvoltage conductive needle 22 on the top of the vacuum circuit breaker execution box 2 can effectively prevent lightning overvoltage from impacting the vacuum circuit breaker, protecting the equipment from damage. They can also conduct overvoltage current through the vacuum circuit breaker, allowing the overvoltage current to be quickly discharged. This current-conducting effect helps prevent overvoltage from damaging the vacuum interrupter 3 and its surrounding equipment. Furthermore, according to external usage requirements, upper protective plates 9 can be installed on both sides of the vacuum circuit breaker execution box 2 to protect the entire vacuum circuit breaker assembly. This gives the vacuum circuit breaker a protective structure, further improving equipment safety and extending its service life. It also allows operators to easily monitor the equipment's voltage. The vacuum circuit breaker can then be used for circuit and equipment operation through the vacuum circuit breaker execution box 2 and the vacuum interrupter 3. Finally, after completing the installation and use of the entire vacuum circuit breaker according to the above operations, routine maintenance is required. If not used for a long period, simply disconnect the external power supply. This completes the usage process of the vacuum circuit breaker with its protective structure.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A vacuum circuit breaker with a protective structure, characterized in that: include Vacuum circuit breaker base (1), used to support the main body of the vacuum circuit breaker; The vacuum circuit breaker execution box (2) is located above the vacuum circuit breaker base (1) and is used to complete the vacuum circuit breaking. A vacuum interrupter chamber (3) is fixedly installed on the back of the vacuum circuit breaker execution box (2). Positioning sleeves (7) are provided on both sides of the vacuum circuit breaker execution box (2). Positioning columns (8) are movably connected inside the positioning sleeves (7). Side protection plates (9) are fixedly installed on the outside of the positioning columns (8). A voltage monitor (10) is installed in front of the vacuum circuit breaker execution box (2) for voltage monitoring. A first connecting line (11) is fixedly connected to the bottom of the voltage monitor (10), and an alarm (12) is fixedly installed at the other end of the first connecting line (11). A second connecting line (13) is fixedly connected to the outside of the voltage monitor (10). An overvoltage protection chamber (15) is located above the vacuum circuit breaker control box (2) for overvoltage relief and conduction. A threaded groove (16) is provided above the overvoltage protection chamber (15). A threaded rod (17) is movably connected inside the threaded groove (16). A surge arrester (18) is fixedly installed at the top of the threaded rod (17). A second external wire (20) is connected to both sides of the overvoltage protection chamber (15). An external wire clamp (21) is provided outside the second external wire (20). An overvoltage conductive needle (22) is fixedly connected to the other end of the second external wire (20).

2. A vacuum circuit breaker with a protective structure according to claim 1, characterized in that: The vacuum circuit breaker base (1) is fixedly mounted with a bottom mounting plate (4), and an adjustment groove (5) is provided above the bottom mounting plate (4). A positioning bolt (6) is movably connected inside the adjustment groove (5).

3. A vacuum circuit breaker with a protective structure according to claim 1, characterized in that: The side protection plate (9) is movably connected to the vacuum circuit breaker housing (2), and the positioning sleeve (7) is used in conjunction with the positioning column (8).

4. A vacuum circuit breaker with a protective structure according to claim 1, characterized in that: The other end of the second connecting line (13) is fixedly connected to a vacuum interrupter (3), and the vacuum circuit breaker execution box (2) is provided with a heat dissipation window (14).

5. A vacuum circuit breaker with a protective structure according to claim 1, characterized in that: The surge arrester (18) is threadedly connected to the overvoltage protection cavity (15), and the threaded groove (16) is used in conjunction with the threaded rod (17).

6. A vacuum circuit breaker with a protective structure according to claim 1, characterized in that: The overpressure protection cavity (15) is fixedly connected to a first external wiring (19) on one side, and a vacuum interrupter (3) is fixedly connected to the other end of the first external wiring (19).

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