Low-voltage outdoor metering box based on non-power-cut meter replacement

Abstract

The invention discloses a low-voltage outdoor metering box based on non-power-cut meter replacement, and belongs to the technical field of power equipment. The metering box comprises a box body, and an uninterruptible meter changing system is arranged in the box body. According to the system, through cooperative configuration of the first air switch, the second air switch, the electric meter and the bypass branches connected to the two ends of the electric meter in parallel, circuit switching during meter changing operation is achieved. When the electric meter is replaced, the first air switch is switched off to cut off the power supply of the electric meter, and the circuit breaker is switched on, so that the current is continuously supplied to a user through the bypass, thereby completing the uninterruptible power replacement of the electric meter on the premise of ensuring the safety of an electrician, and effectively solving the technical problem that the power supply of the user must be interrupted in the traditional electric meter replacement operation. In addition, various safe and convenient auxiliary structures such as high-temperature alarm, automatic fire extinguishing, anti-abrasion threading and regular wiring can be integrated, and the operation safety, reliability and maintenance convenience of the metering box are further improved.

Description

Technical Field

[0001] This invention belongs to the field of power equipment technology, specifically relating to a low-voltage outdoor metering box based on uninterrupted meter replacement. Background Technology

[0002] Low-voltage outdoor metering boxes are a common device used in home electricity connections. These boxes contain electricity meters that record user consumption, allowing users to understand their usage and facilitating meter readings by the power company. They are an important component of the home electricity connection system. When replacing meters in existing low-voltage outdoor metering boxes, power needs to be cut off to the corresponding user to ensure the safety of electricians and prevent electric shock during the meter replacement process. This results in a power outage for the user during the meter replacement process, affecting the user's normal power consumption and the normal power demand of the user's appliances. Summary of the Invention

[0003] The purpose of this invention is to provide a low-voltage outdoor metering box based on uninterrupted meter replacement, so as to solve the problem in the prior art that power outages occur during meter replacement, thereby affecting the user's normal power supply.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A low-voltage outdoor metering box based on uninterrupted meter replacement includes a box body, and an uninterrupted meter replacement system is installed inside the box body. The uninterruptible power meter replacement system includes a first mounting bracket and a second mounting bracket fixedly connected to the inner wall of the enclosure; a first air switch is fixedly connected to the first mounting bracket, and a second air switch and a circuit breaker are fixedly connected to the second mounting bracket; an electricity meter is fixedly connected to the inner wall of the enclosure; a first live wire and a first neutral wire are electrically connected between the output terminal of the first air switch and the input terminal of the electricity meter; a second live wire and a second neutral wire are electrically connected between the output terminal of the electricity meter and the input terminal of the second air switch; a third live wire and a third neutral wire are electrically connected between the output terminal of the first air switch and the input terminal of the circuit breaker; and a fourth live wire and a fourth neutral wire are electrically connected between the output terminal of the circuit breaker and the input terminal of the second air switch.

[0005] By setting up a first air switch, a second air switch, an electricity meter, and a parallel bypass connected between the output terminal of the first air switch and the input terminal of the second air switch, when replacing the electricity meter, the first air switch can be disconnected first to cut off the power supply to the meter, and then the circuit breaker can be closed, allowing the mains current to flow directly to the user's side through the bypass. This achieves complete power disconnection and safe replacement of the meter without interrupting the user's power supply. This solves the technical problem of power outages caused by the traditional requirement to cut off the user's power during meter replacement, ensuring the safety of electricians and improving the continuity of power supply services and user satisfaction.

[0006] Furthermore, a high-temperature alarm is fixedly connected to the inner wall of the enclosure. The high-temperature alarm includes a housing, a battery and a control circuit board installed inside the housing, a buzzer alarm electrically connected to the control circuit board, and a temperature detection sensor connected to the control circuit board and the buzzer alarm via a cable. The detection end of the temperature detection sensor passes through the lower side of the housing to detect the internal temperature of the housing.

[0007] The alarm integrates a temperature sensor, control circuit board, and buzzer into one unit, powered by a built-in battery, forming a self-contained, proactive temperature monitoring and early warning system. It can monitor abnormal temperature rises inside the metering box in real time and independently. When the internal temperature exceeds the safety threshold due to overload, poor contact, or other reasons, the buzzer alarm will immediately sound an audible and visual alarm, promptly alerting maintenance personnel or nearby users to potential electrical fire hazards. This provides valuable time for early intervention and response, preventing fires caused by overheating and improving the safety and reliability of the metering box operation.

[0008] Furthermore, the enclosure includes an electrical box and a cover hinged to one side of the electrical box via a hinge. A lock and a corresponding latch are provided between the electrical box and the cover. An observation hole is provided on the cover, and a transparent plate is fixedly embedded in the observation hole.

[0009] The enclosure consists of an electrical box and a hinged cover, equipped with a lock and an observation window. The hinged cover facilitates maintenance operations; the lock and latch ensure theft prevention and accidental opening safety when the cover is closed; the observation hole and transparent panel on the cover allow operators or inspectors to directly observe the readings, operating status, and indicator lights of the internal meters without opening the cover, simplifying daily inspections and meter readings, improving work efficiency, and reducing the safety risks and component wear that may result from frequent opening of the enclosure.

[0010] Furthermore, the bottom wall of the electrical box is provided with at least one wire hole, and an anti-wear rubber tube is movably inserted into the wire hole. Both ends of the anti-wear rubber tube extend out of the wire hole, and a limiting ring plate is fixedly sleeved on its outer side. The limiting ring plate is located inside the electrical box.

[0011] The cable threading hole structure has been optimized by adding an anti-abrasion rubber tube and a limiting ring plate. The anti-abrasion rubber tube acts as a buffer and isolation layer when cables pass through the metal enclosure, effectively preventing the sharp edges of the enclosure from cutting and abrading the cable insulation layer, thus preventing leakage, short circuits, or even electric shock accidents caused by insulation damage. The limiting ring plate ensures the stable installation of the anti-abrasion rubber tube inside the enclosure, preventing it from falling off. This physical protection significantly enhances the long-term operational safety of the metering box and the lifespan of the circuit, while reducing maintenance costs.

[0012] Furthermore, an automatic fire extinguisher is also fixedly connected to the second mounting bracket, and the automatic fire extinguisher is connected to a temperature sensor and a smoke sensor for triggering its activation.

[0013] Automatic fire extinguishers triggered by temperature and smoke sensors have been added. When an electrical fault inside the enclosure develops into a critical stage with open flames or large amounts of smoke, the sensors can quickly detect the fire signal and automatically trigger the fire extinguisher to release extinguishing agent. Without human intervention, it can quickly suppress the fire in its early stages, effectively preventing its spread and minimizing fire damage, providing a higher level of active fire protection for electrical facilities and the surrounding environment.

[0014] Furthermore, multiple mounting rails and L-shaped guide rails for installing electrical components are fixedly connected to the inner walls on both the left and right sides of the electrical box.

[0015] Standardized mounting rails and L-shaped guide rails were added to the inner wall of the electrical box. The guide rails provide a convenient and unified mechanical interface for installing additional electrical modules, enabling the metering box to go beyond basic metering functions and be upgraded to an intelligent integrated terminal as needed. This facilitates future functional expansion and technological iteration, improves the product's versatility and adaptability, and reduces the complexity and cost of later modifications.

[0016] Furthermore, a first pressure plate is fixedly connected to the inner wall of the enclosure, and a second pressure plate is detachably connected to the front side of the first pressure plate by multiple screws. The first live wire, the first neutral wire, the second live wire, and the second neutral wire are constrained between the first pressure plate and the second pressure plate.

[0017] The first and second wire clamps, along with screws, provide a detachable clamping mechanism that neatly and securely presses multiple wires into specific positions within the enclosure. This prevents wires from loosening due to gravity or accidental pulling, which could lead to poor contact or arcing. It also makes the wiring inside the enclosure more organized and clear, facilitating heat dissipation and circuit identification during maintenance, thus improving the standardization of the internal structure and the stability of long-term electrical connections.

[0018] Furthermore, the meter is mounted on the inner wall of the box via a fixing plate, which is fixedly connected to the box via multiple threaded nails.

[0019] The mounting plate, serving as an intermediate connector, provides a stable mounting base by securely connecting to the housing via multiple threaded bolts. It also facilitates connection to the back of the meter. During meter replacement, only the connector between the meter and the mounting plate needs to be manipulated; there's no need to move the mounting points on the housing. This simplifies the replacement process, improves efficiency, and reduces repeated installation damage to the housing.

[0020] Furthermore, a U-shaped handle made of insulating material is fixedly connected to the outer wall of the box lid.

[0021] A U-shaped handle made of insulating material has been added to the lid, making operation easier and more convenient.

[0022] Furthermore, mounting blocks are fixedly connected to the outer walls of both sides of the high temperature alarm box, and the mounting blocks are fixedly connected to the inner wall of the box by locking bolts.

[0023] The high-temperature alarm housing is securely and stably fixed using mounting blocks and locking bolts, effectively resisting potential vibrations and preventing the alarm from falling off due to loosening or internal wiring breakage. Simultaneously, the bolt connection facilitates independent installation, debugging, or replacement of the alarm module, improving maintenance convenience and reliability and ensuring its continuous and effective early warning function. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure from another direction of the present invention; Figure 3 This is the front view of the present invention; Figure 4 for Figure 1 A schematic diagram of the structure of the uninterrupted power meter replacement system; Figure 5 for Figure 1 A schematic diagram of the structure of the uninterrupted power supply meter replacement system from another direction; Figure 6 for Figure 1 Schematic diagram of a medium-high temperature alarm; Figure 7 for Figure 6 A schematic diagram of the high-temperature alarm after removing the cover.

[0025] In the diagram: 1. Cabinet; 2. First mounting bracket; 3. First air switch; 4. Meter; 5. Second mounting bracket; 6. Second air switch; 7. Circuit breaker; 8. First live wire; 9. First neutral wire; 10. Second live wire; 11. Second neutral wire; 12. Third live wire; 13. Third neutral wire; 14. Fourth live wire; 15. Fourth neutral wire; 16. High temperature alarm; 17. Box body; 18. Box cover; 19. Battery; 20. Control circuit board; 21. First cable; 22. Buzzer alarm; 23. Second cable; 24. 25. Temperature sensor; 26. Slot; 27. Electrical box; 28. Box cover; 29. ​​Lock; 30. Lock; 31. Observation hole; 32. Transparent plate; 33. Automatic fire extinguisher; 34. Temperature sensor; 35. Smoke sensor; 36. Mounting rail; 37. L-shaped guide rail; 38. U-shaped handle; 39. First pressure plate; 40. Screw; 41. Second pressure plate; 42. Mounting block; 43. Locking bolt; 44. Anti-wear rubber tube; 45. Limiting ring plate; 46. Fixing plate; 47. Threaded nail. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0027] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0028] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. It should be noted in the description of this invention that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] Please see Figures 1-7 This invention provides a low-voltage outdoor metering box based on uninterrupted meter replacement, comprising a box body 1, an uninterrupted meter replacement system installed inside the box body 1, a first mounting bracket 2 fixedly connected to the vertical inner wall of the box body 1, a first air switch 3 fixedly connected to the first mounting bracket 2, an electricity meter 4 fixedly connected to the vertical inner wall of the box body 1, a second mounting bracket 5 fixedly connected to the vertical inner wall of the box body 1, a second air switch 6 fixedly connected to the front side wall of the second mounting bracket 5, a circuit breaker 7 fixedly connected to the front side wall of the second mounting bracket 5, and a first live wire 8 electrically connected between the output terminal of the first air switch 3 and the input terminal of the electricity meter 4. A first neutral wire 9 is electrically connected between the output terminal of the gas switch 3 and the input terminal of the meter 4; a second live wire 10 is electrically connected between the output terminal of the meter 4 and the input terminal of the second air switch 6; a second neutral wire 11 is electrically connected between the output terminal of the meter 4 and the input terminal of the second air switch 6; a third live wire 12 is electrically connected between the first air switch 3 and the input terminal of the circuit breaker 7; a third neutral wire 13 is electrically connected between the first air switch 3 and the input terminal of the circuit breaker 7; a fourth live wire 14 is electrically connected between the output terminal of the circuit breaker 7 and the second air switch 6; and a fourth neutral wire 15 is electrically connected between the output terminal of the circuit breaker 7 and the second air switch 6.

[0031] In the above embodiment, during use, the power transmission cable is connected to the first air switch 3, and the incoming cable is connected to the second air switch 6. When replacing the meter, the switch of the first air switch 3 is turned down to disconnect the current between the first air switch 3 and the meter 4, and the circuit breaker 7 is opened, allowing the current to be transmitted to the circuit breaker 7 through the third live wire 12 and the third neutral wire 13, and then through the fourth live wire 14 and the fourth neutral wire 15 to the second air switch 6 to connect with the incoming cable, thereby ensuring the normal transmission of incoming power. At this time, the meter 4 is not energized, so the meter 4 can be safely disassembled and replaced. After the meter 4 is replaced, the switch of the first air switch 3 is pushed up to open the circuit breaker 7, so that the current can be transmitted through the meter 4 to the second air switch 6 again, thereby restoring the power metering function of the meter 4. The operation is simple and convenient, and the meter 4 can be safely replaced without interrupting the power supply, effectively improving the safety of the meter 4 replacement and effectively ensuring the user's power demand when replacing the meter 4.

[0032] As an optional embodiment of the present invention, a high temperature alarm 16 is fixedly connected to the vertical inner wall of the box 1. The high temperature alarm 16 is fixedly connected to the box 17 on the inner wall of the box 1. The front side of the box 17 is fastened with a cover 18 by a buckle. A battery 19 is fixedly connected inside the box 17. A control circuit board 20 is fixedly connected inside the box 17. A first cable 21 is electrically connected between the control circuit board 20 and the battery 19. A buzzer alarm 22 is fixedly connected inside the box 17. A second cable 23 is electrically connected between the buzzer alarm 22 and the control circuit board 20. A third cable 24 is electrically connected to the buzzer alarm 22. One end of the third cable 24 is electrically connected to a temperature detection sensor 25. A slot 26 is opened on the lower side of the box 17. The temperature detection sensor 25 passes through the slot 26 and penetrates the lower side wall of the box 17.

[0033] In this embodiment, the temperature detection sensor 25 can monitor the temperature inside the electrical box 27 in real time. When the temperature detection sensor 25 detects that the temperature inside the electrical box 27 exceeds 100 degrees Celsius, it will trigger the buzzer alarm 22 through the control circuit board 20 to sound an alarm, thereby timely reminding the surrounding personnel of the abnormal temperature of the low-voltage outdoor metering box and effectively improving the safety of the use of the low-voltage outdoor metering box.

[0034] As an optional embodiment of the present invention, the box body 1 includes an electrical box 27. The right side of the electrical box 27 is hinged to a box cover 28. A latch 29 is fixedly connected to the inner wall of the bottom of the electrical box 27. A lock 30 matching the latch 29 is fixedly embedded in the vertical side wall of the box cover 28. Two wire holes are symmetrically opened at the bottom of the electrical box 27. An observation hole 31 is opened on the box cover 28. A transparent plate 32 is fixedly embedded in the observation hole 31.

[0035] In the above embodiment, the lock 30 and the latch 29 cooperate to securely close the cover 28, and the wire hole facilitates wire entry and exit.

[0036] As an optional embodiment of the present invention, an automatic fire extinguisher 33 is fixedly connected to the second mounting bracket 5, and a temperature sensor 34 and a smoke sensor 35 are fixedly connected to the automatic fire extinguisher 33.

[0037] In this embodiment, during use, the temperature sensor 34 can detect the internal temperature of the low-pressure outdoor metering box in real time, and the smoke sensor 35 can monitor the amount of smoke inside the low-pressure outdoor metering box in real time. When the temperature exceeds the temperature threshold set by the automatic fire extinguisher 33 or the threshold of the smoke sensor 35 triggering the smoke sensor 35, the automatic fire extinguisher 33 will automatically start and spray fire extinguishing material to extinguish the fire, thereby timely and effectively suppressing the fire of the low-pressure outdoor metering box and effectively improving the safety of the low-pressure outdoor metering box.

[0038] As an optional embodiment of the present invention, multiple mounting rails 36 are fixedly connected to the vertical inner walls on both sides of the electrical box 27, and multiple L-shaped guide rails 37 are fixedly connected to the vertical inner walls on both sides of the electrical box 27.

[0039] In the above embodiments, the mounting rail 36 and L-shaped guide rail 37 can improve the convenience of installing circuit components in the electrical box 27 and improve the expandability of the low-voltage outdoor metering box.

[0040] As an optional embodiment of the present invention, a U-shaped handle 38 is fixedly connected to the vertical side wall of the box cover 28, and the U-shaped handle 38 is made of insulating material.

[0041] In this embodiment, the U-shaped handle 38 improves the ease of opening and closing the lid 28.

[0042] As an optional embodiment of the present invention, a first pressure plate 39 is fixedly connected to the vertical inner wall of the housing 1, and a second pressure plate 41 is fixedly connected to the side wall of the front side of the first pressure plate 39 by a plurality of screws 40. The first live wire 8, the first neutral wire 9, the second live wire 10 and the second neutral wire 11 are located between the first pressure plate 39 and the second pressure plate 41.

[0043] In the above embodiment, the first pressure plate 39 and the second pressure plate 41 cooperate with each other to provide wired limit for the first live wire 8, the first neutral wire 9, the second live wire 10 and the second neutral wire 11, thereby improving the stability of the first live wire 8, the first neutral wire 9, the second live wire 10 and the second neutral wire 11, preventing the first live wire 8, the first neutral wire 9, the second live wire 10 and the second neutral wire 11 from falling off, resulting in poor contact and wire burning, and effectively improving electrical safety.

[0044] As an optional embodiment of the present invention, mounting blocks 42 are fixedly connected to the outer walls on both the left and right sides of the box 17, and locking bolts 43 are fixedly connected between the mounting blocks 42 and the electrical box 27.

[0045] In this embodiment, the mounting block 42 and the locking bolt 43 cooperate with each other to securely fix the housing 17, thereby improving the stability of the high temperature alarm 16 in use.

[0046] As an optional embodiment of the present invention, an anti-wear rubber tube 44 is movably inserted into the wire hole, both ends of the anti-wear rubber tube 44 extend out of the wire hole, and a limiting ring plate 45 is fixedly sleeved on the outside of the anti-wear rubber tube 44, and the limiting ring plate 45 is located inside the electrical box 27.

[0047] In this embodiment, the anti-wear rubber tube 44 can prevent the electrical box 27 from causing wear and leakage to the cable, effectively improving the safety of the low-voltage outdoor metering box.

[0048] As an optional embodiment of the present invention, a fixing plate 46 is fixedly connected to the meter 4, and the fixing plate 46 is fixedly connected to the inner wall of the electrical box 27 by a plurality of threaded nails 47.

[0049] In the above embodiment, the fixing plate 46 and the threaded nail 47 cooperate with each other to securely fix the electricity meter 4, and improve the convenience of disassembling and assembling the electricity meter 4, as well as the convenience of replacing the electricity meter 4.

[0050] The working process of this invention is as follows: In use, the power transmission cable is connected to the first air switch 3, and the incoming cable is connected to the second air switch 6. When replacing the meter, the switch of the first air switch 3 is turned down to disconnect the current between the first air switch 3 and the meter 4. The circuit breaker 7 is then opened, allowing the current to be transmitted to the circuit breaker 7 through the third live wire 12 and the third neutral wire 13, and then through the fourth live wire 14 and the fourth neutral wire 15 to the second air switch 6 to connect with the incoming cable. This ensures the normal transmission of electricity to the household. At this time, the meter 4 is not energized, allowing for safe disassembly and replacement of the meter 4. After the meter 4 is replaced, the switch of the first air switch 3 is pushed up to disconnect the circuit breaker 7, allowing the current to be transmitted through the meter 4 back to the second air switch 6, thus restoring the meter 4's power metering function. The operation is simple and convenient, allowing for safe replacement of the meter 4 without interrupting the power supply. This effectively improves the safety of meter 4 replacement and ensures the user's power needs when replacing the meter 4. During use, the temperature detection sensor 25 can monitor the temperature inside the electrical box 27 in real time. When the temperature detection sensor 25 detects that the temperature inside the electrical box 27 exceeds 100 degrees Celsius, it will trigger the buzzer alarm 22 through the control circuit board 20 to sound an alarm, thereby promptly alerting the surrounding personnel to the abnormal temperature of the low-voltage outdoor metering box and effectively improving the safety of using the low-voltage outdoor metering box. The lock 30 and the latch 29 work together to securely close the lid 28, and the wire hole facilitates wire entry and exit. During use, the temperature sensor 34 can detect the internal temperature of the low-pressure outdoor metering box in real time, and the smoke sensor 35 can monitor the amount of smoke inside the low-pressure outdoor metering box in real time. When the temperature exceeds the temperature threshold set by the automatic fire extinguisher 33 or the smoke sensor 35 detects the threshold that triggers the smoke sensor 35, the automatic fire extinguisher 33 will automatically start and spray fire extinguishing material to extinguish the fire, thereby effectively suppressing the fire of the low-pressure outdoor metering box in a timely manner and effectively improving the safety of the low-pressure outdoor metering box.

[0051] This invention utilizes an uninterrupted meter replacement system. During operation, the power transmission cable is connected to a first circuit breaker, and the incoming power cable is connected to a second circuit breaker. When replacing the meter, the first circuit breaker is flipped downwards to disconnect the current between it and the meter. The circuit breaker is then opened, allowing current to flow through the third live wire and the third neutral wire to the circuit breaker, and then through the fourth live wire and the fourth neutral wire to the second circuit breaker, connecting with the incoming power cable. This ensures normal power supply to the household, and the meter is de-energized, allowing for safe meter replacement. After replacement, the first circuit breaker is pushed upwards to open the circuit breaker, allowing current to flow back through the meter to the second circuit breaker, restoring the meter's metering function. The system is simple and convenient, enabling safe meter replacement without interrupting power, effectively improving the safety of meter replacement and ensuring the user's power needs during meter replacement.

[0052] This invention features a high-temperature alarm. During use, the temperature detection sensor can monitor the temperature inside the electrical box in real time. When the temperature detection sensor detects that the temperature inside the electrical box exceeds 100 degrees Celsius, it will trigger a buzzer alarm through the control circuit board, thereby promptly alerting surrounding personnel to the abnormal temperature of the low-voltage outdoor metering box and effectively improving the safety of using the low-voltage outdoor metering box.

[0053] This invention, through the installation of an automatic fire extinguisher, a temperature sensor, and a smoke sensor, allows the temperature sensor to detect the internal temperature of the low-pressure outdoor metering box in real time, and the smoke sensor to monitor the amount of smoke inside the box. When the temperature exceeds the temperature threshold set by the automatic fire extinguisher or the smoke sensor triggers the smoke sensor's threshold, the automatic fire extinguisher automatically activates and sprays extinguishing material to put out the fire. This effectively and promptly suppresses fires in the low-pressure outdoor metering box, significantly improving the safety of its use.

[0054] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A low-voltage outdoor metering box based on uninterrupted meter replacement, characterized in that, Includes a housing (1), and the housing (1) is equipped with an uninterrupted meter replacement system; The uninterruptible meter replacement system includes a first mounting bracket (2) and a second mounting bracket (5) fixedly connected to the inner wall of the enclosure (1); a first air switch (3) is fixedly connected to the first mounting bracket (2), a second air switch (6) and a circuit breaker (7) are fixedly connected to the second mounting bracket (5), and an electric meter (4) is fixedly connected to the inner wall of the enclosure (1); a first live wire (8) and a first neutral wire (9) are electrically connected between the output terminal of the first air switch (3) and the input terminal of the electric meter (4); a second live wire (10) and a second neutral wire (11) are electrically connected between the output terminal of the electric meter (4) and the input terminal of the second air switch (6); a third live wire (12) and a third neutral wire (13) are electrically connected between the output terminal of the first air switch (3) and the input terminal of the circuit breaker (7); a fourth live wire (14) and a fourth neutral wire (15) are electrically connected between the output terminal of the circuit breaker (7) and the input terminal of the second air switch (6).

2. The low-pressure outdoor metering box according to claim 1, characterized in that, A high-temperature alarm (16) is also fixedly connected to the inner wall of the enclosure (1). The high-temperature alarm (16) includes a box (17), a battery (19) and a control circuit board (20) installed in the box (17), a buzzer alarm (22) electrically connected to the control circuit board (20), and a temperature detection sensor (25) connected to the control circuit board (20) and the buzzer alarm (22) via a cable. The detection end of the temperature detection sensor (25) passes through the lower side of the box (17) to detect the internal temperature of the enclosure (1).

3. The low-pressure outdoor metering box according to claim 1, characterized in that, The enclosure (1) includes an electrical box (27) and a cover (28) hinged to one side of the electrical box (27). A lock (30) and a latch (29) are provided between the electrical box (27) and the cover (28). An observation hole (31) is provided on the cover (28), and a transparent plate (32) is fixedly embedded in the observation hole (31).

4. The low-pressure outdoor metering box according to claim 2, characterized in that, The bottom wall of the electrical box (27) has at least one wire hole, and a wear-resistant rubber tube (44) is movably inserted into the wire hole. Both ends of the wear-resistant rubber tube (44) extend out of the wire hole, and a limiting ring plate (45) is fixedly sleeved on its outer side. The limiting ring plate (45) is located inside the electrical box (27).

5. The low-pressure outdoor metering box according to claim 1, characterized in that, An automatic fire extinguisher (33) is also fixedly connected to the second mounting bracket (5). The automatic fire extinguisher (33) is connected to a temperature sensor (34) and a smoke sensor (35) for triggering its activation.

6. The low-pressure outdoor metering box according to claim 2, characterized in that, Multiple mounting rails (36) and L-shaped guide rails (37) for installing electrical components are fixedly connected to the inner walls on both sides of the electrical box (27).

7. The low-pressure outdoor metering box according to claim 1, characterized in that, A first pressure plate (39) is fixedly connected to the inner wall of the housing (1). A second pressure plate (41) is detachably connected to the front side of the first pressure plate (39) by a number of screws (40). The first live wire (8), the first neutral wire (9), the second live wire (10) and the second neutral wire (11) are restricted between the first pressure plate (39) and the second pressure plate (41).

8. The low-pressure outdoor metering box according to claim 1, characterized in that, The meter (4) is installed on the inner wall of the box (1) by a fixing plate (46), and the fixing plate (46) is fixedly connected to the box (1) by multiple threaded nails (47).

9. The low-pressure outdoor metering box according to claim 2, characterized in that, The outer wall of the lid (28) is fixedly connected to a U-shaped handle (38) made of insulating material.

10. The low-pressure outdoor metering box according to claim 1, characterized in that, The outer walls of the left and right sides of the box (17) of the high temperature alarm (16) are fixedly connected with mounting blocks (42), and the mounting blocks (42) are fixedly connected to the inner wall of the box (1) by locking bolts (43).

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