Multi-module single-phase multi-meter-position non-metal low-voltage electric energy metering box

Abstract

The application discloses a multi-module single-phase multi-meter-position nonmetal low-voltage electric energy metering box, which comprises a box body, a partition plate is arranged in the box body to separate an incoming line cavity and a meter installation cavity, a first cabinet door and a second cabinet door are hingedly connected to the front of the box body, an incoming line switch, an ABS material interference fit electric energy meter connector are installed in the box body, an electric energy meter body is detachably and plug-pull assembled, and an output end of the electric energy meter body is electrically connected with an outgoing line switch. The plug-pull connector is adopted, so that the screw dismounting operation is omitted, the on-site operation and maintenance time of meter replacement and verification is reduced, and batch operation and maintenance efficiency is improved; the box body is made of SMC nonmetal insulating material, is matched with a PE protective bus, a waterproof eave, a heat dissipation port with a dust filter screen and a lead seal lock, and has the functions of equipment protection, grounding safety and electricity larceny prevention.

Description

Technical Field

[0001] This invention relates to the field of electricity metering boxes, and more particularly to a multi-module single-phase multi-position non-metallic low-voltage electricity metering box. Background Technology

[0002] Multi-module single-phase multi-position non-metallic low-voltage power metering boxes are key power distribution metering devices in centralized power supply systems of residential communities and industrial parks. They are mainly used for centralized collection of power consumption metering and circuit protection for multiple users, enabling individual household power consumption metering and line overload and short circuit protection. They have significant practical application value in ensuring fair and safe power supply metering for civilian use.

[0003] Most non-metallic low-voltage electricity metering boxes on the market currently house circuit breakers and electricity meters within the box. Workers open the box door to complete the meter wiring and installation, relying on the circuit breaker inside for basic circuit protection and the electricity meter for power consumption data collection. The cabinet door provides simple enclosure and protection, thus enabling centralized electricity metering and distribution for multiple households. However, existing similar energy metering boxes require repeated tightening of terminal screws during on-site maintenance, making the disassembly and assembly cumbersome. On-site verification and replacement of energy meters also consume a lot of time, resulting in low maintenance efficiency and hindering the large-scale meter maintenance work of power supply departments. Therefore, a multi-module single-phase multi-position non-metallic low-voltage energy metering box is proposed to solve the above problems. Summary of the Invention

[0004] To overcome the above shortcomings, this invention provides a multi-module single-phase multi-position non-metallic low-voltage power metering box, which aims to solve the problem of low operation and maintenance efficiency in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-module single-phase multi-meter non-metallic low-voltage power metering box, comprising a box body, wherein a partition is fixedly connected inside the box body, and a first cabinet door and a second cabinet door are hinged to the front of the box body. An incoming line switch is fixedly installed on the inner wall of the box on the left side of the partition. An electricity meter connector is fixedly installed on the inner wall of the box. An electricity meter body is detachably installed on the electricity meter connector. The output end of the electricity meter body is electrically connected to the outgoing line switch. The lower part of the enclosure has a cable inlet, the side wall of the enclosure has a heat dissipation vent, and waterproof eaves are fixedly connected to both sides of the enclosure. The energy meter body can be adapted to various standard single-phase energy meters. The energy meter body can collect single-phase active energy, the metering error meets the national metering standards, and supports remote uploading of metering data to realize the accurate metering function of the enclosure.

[0006] As a further description of the above technical solution: both the incoming and outgoing switches are circuit breakers. The incoming and outgoing switches are connected to the power supply circuit to provide overload and short-circuit protection for the line, avoid safety hazards caused by line overload and short-circuit faults, and realize the safety protection function.

[0007] As a further description of the above technical solution: the first cabinet door and the second cabinet door are equipped with lead seals, the cabinet body is a fully enclosed isolation structure, and the internal wiring of the cabinet body is concealed.

[0008] As a further description of the above technical solution: the electricity meter body has remote communication capability.

[0009] As a further description of the above technical solution: the waterproof eaves and heat dissipation vents of the enclosure cooperate with each other, and a dust filter is provided at the heat dissipation vents.

[0010] As a further description of the above technical solution: the enclosure is made of SMC non-metallic insulating material, and a PE protective busbar is installed inside the enclosure.

[0011] As a further description of the above technical solution: the enclosure has an IP44 protection rating.

[0012] As a further description of the above technical solution: the electricity meter connector is an interference fit connector made of ABS material, which has a plug-in life of more than 1000 cycles and stable electrical contact; the electricity meter body is quickly assembled and disassembled through the electricity meter connector, which facilitates the disassembly and replacement of the electricity meter body.

[0013] As a further description of the above technical solution: the inlet is located at the bottom of the enclosure.

[0014] As a further description of the above technical solution: the partition divides the inner cavity of the box into an inlet function cavity and a meter installation cavity. The inlet switch is arranged in the inlet function cavity, and the electricity meter connector, electricity meter body, and outlet switch are arranged in the meter installation cavity, realizing the partitioned and isolated arrangement of strong and weak components.

[0015] The present invention has the following beneficial effects: 1. In this invention, an ABS material interference fit electricity meter connector is set, which allows for quick plugging and unplugging of the electricity meter body without repeatedly tightening the wiring screws. This simplifies the disassembly and assembly process for electricity meter calibration and rotation, reduces on-site maintenance time, and improves the work efficiency of power supply departments in large-scale meter maintenance operations. The connector has excellent insulation performance, long plugging and unplugging life, and ensures stable and reliable electrical contact.

[0016] 2. In this invention, the internal cavity of the cabinet is divided into an incoming line functional cavity and a meter installation cavity by a partition, so as to realize the partitioned and isolated arrangement of strong and weak components, reduce thermal and electrical interference between the incoming line switch and the meter module, and prevent faults from spreading to each other. At the same time, the partition cabinet doors can be opened independently, and the maintenance of different units does not affect each other, effectively improving the safety of equipment maintenance operations.

[0017] 3. In this invention, the enclosure is made of SMC non-metallic insulating material, and the interior is equipped with a PE protection bus. The door lock is connected to the PE protection bus through yellow-green double-color wires to form a complete grounding circuit. The outer shell reaches the IP44 protection level. It is equipped with a waterproof eave and a heat dissipation vent with a dustproof filter, which takes into account heat dissipation, dustproof and waterproof capabilities. It can be used for indoor hanging, improving the overall operating safety and environmental adaptability of the machine.

[0018] 4. In this invention, the first cabinet door and the second cabinet door are equipped with lead seals, the cabinet body is a fully enclosed isolation structure, and the internal wiring is concealed, which can effectively prevent unauthorized personnel from opening the cover or modifying the internal wiring, thus playing a good role in preventing electricity theft. The electricity meter body has remote communication capabilities and can remotely upload metering data, enabling remote meter reading and electricity data analysis, and is suitable for intelligent centralized electricity management in communities and parks. Attached Figure Description

[0019] Figure 1 This is a front view of a multi-module single-phase multi-position non-metallic low-voltage power metering box proposed in this invention. Figure 2 This is an internal schematic diagram of a multi-module single-phase multi-position non-metallic low-voltage power metering box proposed in this invention.

[0020] Legend: 1. Cabinet body; 2. Partition; 3. First cabinet door; 4. Second cabinet door; 5. Incoming line switch; 6. Electricity meter connector; 7. Electricity meter body; 8. Outgoing line switch; 9. Incoming line port; 10. Ventilation vent; 11. Waterproof eaves. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Reference Figure 1 - Figure 2This invention provides an embodiment of a multi-module single-phase multi-meter non-metallic low-voltage power metering box, comprising a box body 1. The box body 1 is made of SMC non-metallic insulating material. SMC material has the characteristics of insulation, corrosion resistance, and high mechanical strength, making it suitable for indoor hanging installation. A PE protection busbar is installed inside the box body 1 to construct a complete protective grounding circuit. The metal parts of the door lock can be connected to the PE protection busbar through yellow-green bicolor wires to ensure personal electric shock protection in case of equipment failure. The outer shell of the box body 1 has an IP44 protection rating, and the operating surface protection rating can reach IP20C, preventing solid foreign objects and water splashes from entering the box and protecting the internal electrical components from external environmental interference. A partition 2 is fixedly connected inside the box body 1 to achieve physical partitioning and isolation of the internal cavity of the box body 1, avoiding the incoming line switch. 5. To prevent thermal and electrical interference between the metering module and the main unit, the front of the enclosure 1 is hinged with a first cabinet door 3 and a second cabinet door 4. The two cabinet doors open and close in separate areas, allowing independent operation of the maintenance incoming line unit and the metering unit, facilitating maintenance. The first cabinet door 3 and the second cabinet door 4 are equipped with lead-sealed locks, which can be applied to prevent unauthorized personnel from opening the cabinet doors. The enclosure 1 is a fully enclosed and isolated structure, and the internal wiring of the enclosure 1 is concealed, with no exposed wires or busbars, preventing human contact with live parts and blocking external forces from interfering with the internal wiring. The inner wall of the enclosure 1, on the left side of the partition 2, is fixedly installed with an incoming line switch 5 as a main incoming line protection device, realizing the switching on and off of the main power supply of the entire metering box and the protection of the main circuit fault. The inner wall of the enclosure 1 is fixedly installed with an energy meter connector 6, providing power. Meter body 7 features a quick-connect installation interface, eliminating the need for traditional wiring and screwing. The meter body 7 is detachably mounted on the meter connector 6, enabling tool-free quick assembly and disassembly. This facilitates on-site verification and replacement of the meter body 7. The meter connector 6 is made of ABS material with an interference fit, offering excellent insulation performance, a plug-in lifespan exceeding 1000 cycles, reliable contact, and resistance to overheating and loosening. The meter body 7 is easily assembled and disassembled via the quick-connect connector 6, facilitating its replacement. Meter body 7 possesses remote communication capabilities, establishing a data exchange channel with the backend management system to enable business command issuance and operational data feedback. Meter body 7 is compatible with various standard electricity meters for collecting single-phase active energy, and is compatible with mainstream single-phase electricity meters on the market, expanding the device's adaptability and versatility. The metering error meets national metrological standards, ensuring fair and accurate electricity metering. The backend can acquire user electricity metering data in real time and supports remote data upload, achieving precise metering. The output terminal of the electricity meter body 7 is electrically connected to the outgoing switch 8. Each household meter is independently configured with outgoing line protection, so a fault in one household will not affect the normal power supply to other users. Both the incoming switch 5 and the outgoing switch 8 are circuit breakers with dual protection characteristics of instantaneous short-circuit protection and overload delay protection. The incoming switch 5 and the outgoing switch 8 are connected to the power supply circuit, providing overload and short-circuit protection for the line, avoiding safety hazards caused by line overload and short-circuit faults, and realizing safety protection functions. When an overload or short-circuit fault occurs in the circuit, the power supply is quickly disconnected to protect cables, electricity meters, and downstream electrical equipment, and to curb the risk of electrical fires.Partition 2 divides the interior of enclosure 1 into an inlet function cavity and a meter installation cavity. The inlet switch 5 is located in the inlet function cavity, while the meter connector 6, meter body 7, and outlet switch 8 are located in the meter installation cavity. This achieves zoned and isolated arrangement of strong and weak current components, ensuring no interference between them and improving the safety of maintenance operations. An inlet port 9 is located at the bottom of enclosure 1, matching the bottom-in, bottom-out wiring process. Cables enter and exit from the bottom of enclosure 1, reducing the risk of rainwater flowing into the enclosure along the cables. The side walls of enclosure 1 are... The enclosure features a heat dissipation vent 10, allowing heat generated during operation to dissipate outwards and preventing accelerated aging of components due to high internal temperatures. Waterproof eaves 11 are fixedly connected to both sides of the enclosure 1 to prevent rainwater and dew from directly hitting the heat dissipation vents 10 and flowing back into the enclosure. The waterproof eaves 11 and heat dissipation vents 10 work together, with dust filters installed at the vents 10, providing a triple effect of heat dissipation, waterproofing, and dust prevention. This reduces the entry of dust and insects into the enclosure, extending the lifespan of internal components and making it suitable for various indoor installation scenarios.

[0023] Working principle: During operation, external power is supplied through the inlet port 9 at the bottom of the enclosure 1. The main power supply is switched on and off and the main circuit is protected by the inlet switch 5 installed on the left side of the partition 2. The current is then distributed to each electricity meter connector 6. The electricity meter body 7 mounted on the electricity meter connector 6 collects the electricity metering data of each household. The output terminal of the electricity meter body 7 is connected to the outgoing switch 8 to realize overload and short circuit protection for each household circuit. The load current of each household is output to the outside through the outgoing switch 8. The enclosure 1 is equipped with a PE busbar. The door lock is reliably connected to the PE busbar through a yellow-green double-color BVR wire to realize the grounding protection of the whole machine. The heat dissipation vent 10 on the side wall of the enclosure 1 and the waterproof eaves 11 on both sides of the enclosure 1 cooperate to realize heat dissipation, dust prevention and waterproofing inside the enclosure. The electricity meter body 7 has remote communication capability and can upload the collected metering data to the outside to complete intelligent management such as remote meter reading and data statistical analysis.

[0024] It is worth noting that in this embodiment, the electrical equipment is a common device in the prior art, and the model used can be customized according to actual usage needs. The power supply interface of the electrical equipment in this invention is connected to the power supply system through a switch (not shown in the figure) and a wire (not shown in the figure) to realize its control. The circuits and controls involved are all prior art and are known in the current field, so they will not be described in detail here.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 multi-module single-phase multi-position non-metallic low-voltage power metering box, comprising a box body (1), characterized in that: The box (1) is fixedly connected to a partition (2), and the front of the box (1) is hinged with a first cabinet door (3) and a second cabinet door (4). An incoming line switch (5) is fixedly installed on the inner wall of the box (1) on the left side of the partition (2). An energy meter connector (6) is fixedly installed on the inner wall of the box (1). An energy meter body (7) is detachably installed on the energy meter connector (6). The output end of the energy meter body (7) is electrically connected to an outgoing line switch (8). The lower part of the box (1) is provided with a cable inlet (9), the side wall of the box (1) is provided with a heat dissipation vent (10), and the two sides of the box (1) are fixedly connected with waterproof eaves (11).

2. The multi-module single-phase multi-position non-metallic low-voltage energy metering box according to claim 1, characterized in that: Both the incoming line switch (5) and the outgoing line switch (8) are circuit breakers. The incoming line switch (5) and the outgoing line switch (8) are connected to the power supply circuit to provide overload and short circuit protection for the line, avoid safety hazards caused by overload and short circuit faults, and realize the safety protection function.

3. The multi-module single-phase multi-position non-metallic low-voltage power metering box according to claim 1, characterized in that: The first cabinet door (3) and the second cabinet door (4) are equipped with lead seals. The box body (1) is a fully enclosed isolation structure, and the internal wiring of the box body (1) is concealed.

4. The multi-module single-phase multi-position non-metallic low-voltage energy metering box according to claim 1, characterized in that: The power meter body (7) has remote communication capability.

5. A multi-module single-phase multi-position non-metallic low-voltage energy metering box according to claim 1, characterized in that: The waterproof eaves (11) and heat dissipation vents (10) of the housing (1) cooperate with each other, and a dust filter is provided at the heat dissipation vents (10).

6. The multi-module single-phase multi-position non-metallic low-voltage energy metering box according to claim 1, characterized in that: The enclosure (1) is made of SMC non-metallic insulating material, and a PE protection busbar is installed inside the enclosure (1).

7. A multi-module single-phase multi-position non-metallic low-voltage energy metering box according to claim 1, characterized in that: The enclosure (1) has an IP44 protection rating.

8. The multi-module single-phase multi-position non-metallic low-voltage power metering box according to claim 1, characterized in that: The electricity meter connector (6) is an ABS material interference fit connector. The electricity meter body (7) can be quickly plugged in and unplugged through the electricity meter connector (6), which facilitates the disassembly and replacement of the electricity meter body (7).

9. A multi-module single-phase multi-position non-metallic low-voltage energy metering box according to claim 1, characterized in that: The inlet (9) is located at the bottom of the housing (1).

10. A multi-module single-phase multi-position non-metallic low-voltage energy metering box according to claim 1, characterized in that: The partition (2) divides the inner cavity of the box (1) into an inlet function cavity and a meter installation cavity. The inlet switch (5) is arranged in the inlet function cavity, and the electricity meter connector (6), electricity meter body (7), and outlet switch (8) are arranged in the meter installation cavity, so as to realize the partitioned and isolated arrangement of strong and weak components.

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