An electric energy meter box for extending the fire point of a three-phase four-wire circuit breaker

Abstract

The utility model discloses a kind of watt-hour meter boxes for expanding three-phase four-wire circuit breaker fire point, including anti-theft meter box, the top of the anti-theft meter box is provided with glass baffle, and the inner wall of anti-theft meter box is provided with circuit breaker main body, the top of circuit breaker main body is fixedly connected with shell cover plate, and one end of shell cover plate is fixedly connected with wiring end one, and connecting device for the quick installation effect of circuit breaker main body is arranged between anti-theft meter box and circuit breaker main body, the outer surface of anti-theft meter box is provided with a plurality of mounting holes, the inside of circuit breaker main body is equipped with connection copper bar one and connection copper bar two, and voltage current sensor is fixedly connected on connection copper bar one and connection copper bar two, and the inside of circuit breaker main body is provided with a plurality of temperature sensors, shell cover plate bottom is equipped with fire extinguishing agent storage tank, a kind of watt-hour meter boxes for expanding three-phase four-wire circuit breaker fire point of the utility model, solve the problem of traditional meter box in installation and disassembly trouble, it is convenient to maintain and replace.

Description

Technical Field

[0001] This utility model relates to the field of meter box technology, specifically to an energy meter box for expanding the connection point of a three-phase four-wire circuit breaker. Background Technology

[0002] In power supply and management systems, electricity meter boxes, as key distribution equipment, bear the important responsibility of protecting electricity metering devices and distributing electricity. Their performance directly affects the stability and security of the power supply. With the continuous growth of electricity demand and the ongoing upgrading of power facilities, higher requirements are placed on the functionality and ease of operation of electricity meter boxes. The three-phase four-wire circuit breaker, as a core electrical component in the electricity meter box, primarily functions to automatically disconnect the circuit in case of overload, short circuit, or other faults, thus protecting the safety of electrical equipment and lines. In traditional electricity meter box designs, screw fixing is commonly used to ensure the secure installation of key electrical components such as the three-phase four-wire circuit breaker within the meter box. This installation method is theoretically reasonable; the tightening of screws creates a reliable connection between the component and the meter box, ensuring the stability of the component during normal operation to a certain extent and reducing the risk of failure caused by loose components. However, in actual installation and maintenance operations, the screw fixing method has gradually revealed many obvious drawbacks. During installation, workers need to use specialized tools, such as screwdrivers, to tighten each screw individually to secure the component. This process is not only tedious but also extremely inefficient. Disassembly also requires a significant amount of time to loosen the screws, especially during emergency repairs or component replacements. This cumbersome disassembly process can delay repairs and affect the timely restoration of power. Furthermore, after prolonged use, the screws may rust or strip, further increasing the difficulty of installation and disassembly. Utility Model Content

[0003] The purpose of this utility model is to provide an energy meter box for expanding the connection point of a three-phase four-wire circuit breaker, so as to solve the meter box problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an energy meter box for expanding the connection point of a three-phase four-wire circuit breaker, comprising an anti-theft meter box, wherein a glass baffle is provided on the top of the anti-theft meter box, and a circuit breaker body is provided on the inner wall of the anti-theft meter box. A cover plate is fixedly connected to the top of the circuit breaker body, and a terminal block is fixedly connected to one end of the cover plate, and a terminal block is fixedly connected to the other end of the cover plate. A connecting device for quick installation of the circuit breaker body is provided between the anti-theft meter box and the circuit breaker body. Multiple mounting holes are provided on the outer surface of the anti-theft meter box. A connecting copper busbar I and a connecting copper busbar II are provided inside the circuit breaker body, and voltage and current sensors are fixedly connected to the connecting copper busbar I and the connecting copper busbar II. Multiple temperature sensors are provided inside the circuit breaker body, and a fire extinguishing agent storage tank is provided at the bottom of the cover plate.

[0005] By adopting the above technical solutions, compared with traditional screw fixing methods, tool operation time is saved, which is especially suitable for emergency maintenance scenarios and reduces the risk of disassembly difficulties caused by screw corrosion; voltage and current sensors and temperature sensors provide dual monitoring to enhance the proactive defense against power anomalies and electricity theft; it can quickly suppress initial fires to reduce the probability of equipment damage and has a wide range of applications, such as unattended power distribution environments.

[0006] Preferably, the cover plate has connection holes at its four corners, and the cover plate is fixedly connected to the top of the circuit breaker body by bolts and connection holes. There are three terminals, and each terminal has two ports on one side, while each terminal has four ports on one side.

[0007] By adopting the above technical solution, it is convenient to carry out local maintenance without damaging the overall structure.

[0008] Preferably, the connecting copper busbar one and connecting copper busbar two are arranged in a crisscross pattern inside the circuit breaker body, and one end of connecting copper busbar one is fixedly connected to two terminals of terminal one, and one end of connecting copper busbar two is fixedly connected to four terminals of terminal two.

[0009] By adopting the above technical solution, it is convenient to save installation space, and by increasing the spacing between copper busbars, air convection is enhanced, heat dissipation is assisted, and the risk of local overheating is reduced.

[0010] Preferably, the connecting device includes a mounting plate, a limiting rod, a mounting block, a connecting plug, a push block, a spring, and a plug rod. The mounting plate is fixedly connected to the inside of the anti-theft meter box, and two limiting rods are fixedly connected to the inner wall of the mounting plate. Two mounting blocks are fixedly connected to the bottom of the circuit breaker body. A connecting plug is fixedly connected to the bottom of each of the two mounting blocks, and a push block is movably connected to one end of each of the two mounting blocks. A spring is fixedly connected to one end of each of the two push blocks, and a plug rod is fixedly connected to the bottom of each of the two push blocks.

[0011] By adopting the above technical solution, a one-click locking mechanism is achieved through a plug-in structure, which facilitates the quick installation and removal of the circuit breaker body in the anti-theft meter box.

[0012] Preferably, the mounting plate is U-shaped, and both sides of the top of the mounting plate are provided with sliding grooves, and one end of each of the two limiting rods is fixedly connected to the bottom inner wall of the mounting plate.

[0013] Preferably, both limiting rods are U-shaped, and the inner wall of one side of both limiting rods is toothed, and one end of each limiting rod is movably connected to the inside of the two connecting blocks.

[0014] By adopting the above technical solution, the position can be automatically corrected, and displacement can be restricted in both the horizontal and vertical directions, reducing the time spent on repeated adjustments and saving installation and disassembly time.

[0015] Preferably, the two push blocks are trapezoidal, and one end of each push block is movably connected to two grooves on the mounting plate.

[0016] By adopting the above technical solution and using the guide rail, installation and disassembly errors can be avoided.

[0017] As the technical solution of this utility model, the provided hardware configuration is merely to facilitate reducing the difficulty of installing and dismantling the electricity meter box based on the existing hardware facilities. The specific methods for reducing the difficulty of installing and dismantling the electricity meter box are not considered as the technical problem to be solved or the object of protection of this utility model. Furthermore, the communication methods between the devices all adopt existing communication methods and are not the innovation of this application.

[0018] Compared with the prior art, the beneficial effects of this utility model are: By utilizing the mounting plate, limit rod, mounting block, connecting plug, push block, spring, and plug rod, the circuit breaker body can be quickly installed and removed from the anti-theft meter box. Compared with the traditional screw installation method, there is no need for tedious screw tightening operations, which greatly saves installation and disassembly time, improves work efficiency, and facilitates the later maintenance and replacement of the circuit breaker body.

[0019] Voltage and current sensors can collect real-time voltage and current data on copper busbars one and two. Continuous monitoring of this electrical data effectively detects any abnormal current conditions. Once an anomaly is detected, an early warning system for electricity theft can be issued, allowing for timely detection and prevention of theft, ensuring a safe and stable power supply, and reducing power loss.

[0020] When a fire breaks out inside the circuit breaker body, the heat-sensitive triggering device on the fire extinguishing agent storage tank can be activated manually or automatically, depending on the actual situation, to quickly release the fire extinguishing agent, ensuring rapid suppression of the fire in its early stages, reducing the losses caused by the fire, and improving the safety of the equipment. Attached Figure Description

[0021] Figure 1 This is an overall view of the present utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the connecting device structure of this utility model; Figure 4 This is a cross-sectional view of the mounting block of this utility model. Figure 5 This is a schematic diagram of the internal structure of the circuit breaker body of this utility model.

[0022] In the diagram: 1. Anti-theft meter box; 2. Glass baffle; 3. Circuit breaker body; 4. Shell cover; 5. Terminal 1; 6. Terminal 2; 7. Mounting plate; 8. Limiting rod; 9. Mounting block; 10. Connecting plug; 11. Push block; 12. Spring; 13. Insert rod; 14. Connecting copper busbar 1; 15. Connecting copper busbar 2; 16. Voltage and current sensor; 17. Temperature sensor; 18. Fire extinguishing agent storage tank; 19. Mounting hole. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Reference Figures 1-5 This utility model provides an energy meter box for expanding the connection point of a three-phase four-wire circuit breaker. Reference Figure 1The system includes an anti-theft meter box 1, a glass baffle 2 on the top of the anti-theft meter box 1, and a circuit breaker body 3 on the inner wall of the anti-theft meter box 1. A cover plate 4 is fixedly connected to the top of the circuit breaker body 3, and a terminal 5 is fixedly connected to one end of the cover plate 4, while a terminal 6 is fixedly connected to the other end of the cover plate 4. A connecting device for quick installation of the circuit breaker body 3 is provided between the anti-theft meter box 1 and the circuit breaker body 3. Multiple mounting holes 19 are provided on the outer surface of the anti-theft meter box 1, and a connecting copper busbar 14 and a connecting copper busbar 2 are provided inside the circuit breaker body 3. 5. Voltage and current sensors 16 are fixedly connected to the connecting copper busbar 14 and connecting copper busbar 2 15. Multiple temperature sensors 17 are installed inside the circuit breaker body 3. Fire extinguishing agent storage tank 18 is provided at the bottom of the shell cover plate 4. When the temperature sensor 17 detects abnormal high temperature or open flame, it can automatically release fire extinguishing agent to ensure safety. During installation, the push block 11 is compressed and the spring 12 stores energy. After being inserted into place, the spring 12 pushes the plug rod 13 to engage with the tooth structure of the limit rod 8 to complete the fixation. During disassembly, pressing the push block 11 can release the compressed state and directly remove the circuit breaker body 3.

[0025] Reference Figure 3 The cover plate 4 has connection holes at its four corners and is fixedly connected to the top of the circuit breaker body 3 by bolts and connection holes. There are three terminals 5, and each terminal 5 has two-phase ports on one side. Terminal 6 has four-phase ports on one side. The cover plate 4 has connection holes at its four corners and is fixed to the top of the circuit breaker body 3 by bolts, forming a detachable encapsulation structure. For later maintenance of internal components (such as copper busbars, sensors, etc.), only the cover plate 4 needs to be opened for partial maintenance.

[0026] Reference Figure 5 The connecting copper busbar 14 and connecting copper busbar 2 15 are arranged in a crisscross pattern inside the circuit breaker body 3. One end of connecting copper busbar 14 is fixedly connected to the two-phase ports of terminal 1 5, and one end of connecting copper busbar 2 15 is fixedly connected to the four-phase ports of terminal 2 6. This realizes point-to-point direct connection of the three-phase lines, reduces contact resistance and potential loss caused by intermediate connections, makes the three-phase current more evenly distributed on the copper busbar, reduces the probability of single-phase overload, ensures that the neutral line and ground line have the same path, and avoids mixed neutral and ground connection faults.

[0027] Reference Figure 3 , Figure 4The connecting device includes a mounting plate 7, a limiting rod 8, a mounting block 9, a connecting plug 10, a push block 11, a spring 12, and a plug rod 13. The mounting plate 7 is fixedly connected inside the anti-theft meter box 1, and two limiting rods 8 are fixedly connected to the inner wall of the mounting plate 7. Two mounting blocks 9 are fixedly connected to the bottom of the circuit breaker body 3. A connecting plug 10 is fixedly connected to the bottom of each mounting block 9, and a push block 11 is movably connected to one end of each mounting block 9. A spring 12 is fixedly connected to one end of each push block 11, and a plug rod 13 is fixedly connected to the bottom of each push block 11. The plug rod 13 is connected to the two connecting plugs 10 respectively. Inserted into the two limiting rods 8, the push block 11 is pushed into the mounting block 9 by the compression spring 12. The push block 11 then moves the insertion rod 13 into the limiting rod 8. After the circuit breaker body 3 is pushed into position, the push block 11 enters the groove of the mounting plate 7 under the elastic force of the spring 12. The push block 11 then moves the insertion rod 13 into the toothed inner wall of the limiting rod 8, thus installing the circuit breaker body 3 on the inner wall of the anti-theft meter box 1. This greatly saves installation and disassembly time and improves work efficiency.

[0028] Reference Figure 1 , Figure 2 The mounting plate 7 is U-shaped, and both sides of the top of the mounting plate 7 are provided with sliding grooves. One end of each of the two limiting rods 8 is fixedly connected to the bottom inner wall of the mounting plate 7. The inclined surface of the push block 11 allows the push block 11 to move better. After the circuit breaker body 3 is pushed to the position, the push block 11 enters the sliding groove of the mounting plate 7 under the elastic force of the spring 12, so that the push block 11 can better drive the plug rod 13 to be inserted into the toothed inner wall of the limiting rod 8.

[0029] Reference Figure 3 Both limit rods 8 are U-shaped, and the inner wall of one side of both limit rods 8 is toothed. One end of each limit rod 8 is movably connected to the inside of the two connecting blocks 10. The U-shaped opening of the mounting plate 7 is adapted to circuit breaker bases of different sizes. The spacing of the teeth of the limit rods 8 allows the plug rods 13 to be locked in sections, which is beneficial for adapting to larger weight or irregularly shaped circuit breaker bodies 3.

[0030] Reference Figure 2 The two push blocks 11 are trapezoidal, and one end of each push block 11 is movably connected to the two slides of the mounting plate 7. The inclined guide provides a clear mounting point, which facilitates installation and prevents accidental loosening and falling off.

[0031] In this embodiment, the circuit breaker body 3 is first pushed into the U-shape of the mounting plate 7. Simultaneously, two connecting blocks 10 are inserted into the two limiting rods 8. During this pushing process, the inclined surface of the push block 11 causes one end of the push block 11 to move inwards towards the mounting block 9 by compressing the spring 12. Then, the push block 11 drives one end of the insertion rod 13 to move within the limiting rod 8. After the circuit breaker body 3 is pushed to its position, the push block 11, under the elastic force of the spring 12, enters the groove of the mounting plate 7. This causes the push block 11 to drive the insertion rod 13 into the toothed inner wall of the limiting rod 8, thus installing the circuit breaker body 3 on the inner wall of the anti-theft meter box 1, compared to installation using screws. This is faster and more convenient. Conversely, by pushing the push block 11, one end of the push block 11 drives the plug rod 13 to disengage from the toothed inner wall of the limit rod 8, thereby pulling out the circuit breaker body 3 for easy disassembly. Then, the voltage and current sensor 16 can detect the voltage and current data on the connecting copper busbar 14 and connecting copper busbar 2 15, collect electrical data in real time, effectively monitor whether the current is abnormal, and provide an early warning of electricity theft. Then, by installing temperature sensors 17 at key locations inside the circuit breaker body 3, such as the lower terminal of the circuit breaker, the copper busbar connection, and the circuit breaker body 3, the risk of overheating can be monitored. Then, when a fire occurs inside the circuit breaker body 3, the heat-sensitive triggering device on the fire extinguishing agent storage tank 18 can be used to open the circuit breaker in manual or automatic mode to ensure rapid suppression of the initial fire.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A power meter box for expanding the connection point of a three-phase four-wire circuit breaker, comprising an anti-theft meter box (1), characterized in that: The anti-theft meter box (1) is provided with a glass baffle (2) on the top, and a circuit breaker body (3) is provided on the inner wall of the anti-theft meter box (1). A cover plate (4) is fixedly connected to the top of the circuit breaker body (3). A terminal 1 (5) is fixedly connected to one end of the cover plate (4), and a terminal 2 (6) is fixedly connected to the other end of the cover plate (4). A connecting device for quick installation of the circuit breaker body (3) is provided between the anti-theft meter box (1) and the circuit breaker body (3). Multiple mounting holes (19) are opened on the outer surface of the anti-theft meter box (1). A connecting copper busbar 1 (14) and a connecting copper busbar 2 (15) are provided inside the circuit breaker body (3). Voltage and current sensors (16) are fixedly connected to the connecting copper busbar 1 (14) and the connecting copper busbar 2 (15). Multiple temperature sensors (17) are provided inside the circuit breaker body (3). A fire extinguishing agent storage tank (18) is provided at the bottom of the cover plate (4).

2. A power meter box for expanding the connection point of a three-phase four-wire circuit breaker according to claim 1, characterized in that: The cover plate (4) has connection holes at its four corners, and the cover plate (4) is fixedly connected to the top of the circuit breaker body (3) by bolts and connection holes. There are three terminals (5), and each terminal (5) has two ports on one side, and terminal (6) has four ports on one side.

3. A power meter box for expanding the connection point of a three-phase four-wire circuit breaker according to claim 2, characterized in that: The connecting copper busbar one (14) and connecting copper busbar two (15) are arranged in a crisscross pattern inside the circuit breaker body (3). One end of connecting copper busbar one (14) is fixedly connected to two terminals of terminal one (5), and one end of connecting copper busbar two (15) is fixedly connected to four terminals of terminal two (6).

4. A power meter box for expanding the connection point of a three-phase four-wire circuit breaker according to claim 1, characterized in that: The connecting device includes a mounting plate (7), a limiting rod (8), a mounting block (9), a connecting plug (10), a push block (11), a spring (12), and a plug rod (13). The mounting plate (7) is fixedly connected inside the anti-theft meter box (1), and two limiting rods (8) are fixedly connected to the inner wall of the mounting plate (7). Two mounting blocks (9) are fixedly connected to the bottom of the circuit breaker body (3). The bottom of each mounting block (9) is fixedly connected to a connecting plug (10), and one end of each mounting block (9) is movably connected to a push block (11). One end of each push block (11) is fixedly connected to a spring (12), and the bottom of each push block (11) is fixedly connected to a plug rod (13).

5. A power meter box for expanding the connection point of a three-phase four-wire circuit breaker according to claim 4, characterized in that: The mounting plate (7) is U-shaped, and both sides of the top of the mounting plate (7) are provided with sliding grooves, and one end of each of the two limiting rods (8) is fixedly connected to the bottom inner wall of the mounting plate (7).

6. A power meter box for expanding the connection point of a three-phase four-wire circuit breaker according to claim 4, characterized in that: Both of the limiting rods (8) are U-shaped, and the inner wall of one side of both limiting rods (8) is toothed, and one end of each limiting rod (8) is movably connected to the inside of the two connecting blocks (10).

7. A power meter box for expanding the connection point of a three-phase four-wire circuit breaker according to claim 5, characterized in that: The two push blocks (11) are trapezoidal, and one end of each push block (11) is movably connected to the two grooves of the mounting plate (7).

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