Multi-specification electric meter adaptive electric energy metering box based on modular expansion

Abstract

The invention discloses a multi-specification electric meter adaptive electric energy metering box based on modular expansion, and relates to the technical field of electric energy metering boxes, and the electric energy metering box comprises a fixed support which is internally provided with a metering box unit with a modular expansion function. The back surface of the metering box unit is provided with an auxiliary heat dissipation unit which can remove air moisture by using waste heat in the metering box unit and complete active heat dissipation operation at the same time; the metering box unit comprises a metering box body which is fixedly mounted in the fixed bracket; air flow is driven by the heat dissipation fan to enter from the input end of the heat dissipation support, the air flow is filtered by the cylindrical movable filter screen rotating at a low speed and then input into the metering box body to achieve heat dissipation of electrical elements, and when the cylindrical movable filter screen filters the air flow, heat dissipation of the electrical elements is achieved. Filtered impurities accumulated on the surface of the cylindrical movable filter screen are scraped off by the scraping plate and are collected in the dirt bin, so that the cylindrical movable filter screen still has good air permeability in a long-term working state.

Description

Technical Field

[0001] This invention relates to the field of electricity metering box technology, and more specifically to an electricity metering box adapted to multiple specifications of electricity meters based on modular expansion. Background Technology

[0002] An electricity metering box is a legally mandated complete set of metering equipment in a power system that combines accurate electricity metering, protection of metering components, and management of electricity consumption data. Its core consists of a protective enclosure, electrical components, and protection modules. It converts high voltage and high current from the power grid into standard metering signals, accurately calculates electricity consumption, and provides a legal and authoritative basis for electricity billing. Simultaneously, through a compliant protective structure, it achieves dust and water protection, anti-theft protection, and overload and overvoltage protection, making it suitable for various electricity consumption scenarios such as residential, commercial, and industrial applications. Refer to the relevant patent CN111864593B. Essentially, it achieves rapid assembly and disassembly of the enclosure through the positioning of guide components and the splicing of interlocking components between the first and second enclosures, supplemented by connecting rods and widening strips to enhance stability. Damaged enclosures can be replaced individually, and standardized modules can adapt to different needs, reducing production and maintenance costs.

[0003] Traditional electricity metering boxes are mostly integrated fixed structures with fixed installation positions for electrical components. They lack modular expansion design and require custom-made boxes based on component specifications. This makes them unsuitable for electrical components of different sizes and specifications, resulting in poor versatility. Adding or replacing components requires replacing the entire box, leading to high costs and insufficient flexibility. Furthermore, heat dissipation is mostly a simple direct exhaust design without targeted airflow control. Therefore, a more efficient solution is to use flexible modular brackets and modular assembly plates, selecting the appropriate installation method based on component specifications to achieve multi-module assembly and improve compatibility with various component sizes. Simultaneously, dedicated heat dissipation channels that open synchronously with the modular brackets ensure stable assembly and accurate heat dissipation. Furthermore, an automatic filter collection structure ensures long-term filter ventilation. To address these issues, we offer a modular expansion-based multi-specification electricity metering box. Summary of the Invention

[0004] The purpose of this invention is to provide a modularly expandable multi-specification electricity metering box to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A modularly expandable multi-specification electricity metering box includes a fixed bracket. The fixed bracket is equipped with a metering box unit with modular expansion function. The back of the metering box unit is equipped with an auxiliary heat dissipation unit that can use the residual heat inside the metering box unit to remove air moisture and perform active heat dissipation. The metering box unit includes a metering box body fixedly installed inside a fixed bracket, a modular assembly plate set inside the metering box body for positioning and installing target electrical components, and a box door bracket set on the side of the metering box body to achieve reading observation while ensuring the airtightness of the box body. The auxiliary heat dissipation unit includes a heat dissipation bracket fixedly connected to the back of the metering box, a cylindrical movable filter screen set inside the back of the heat dissipation bracket for intercepting and filtering impurity particles in the intake airflow, and a waste heat dehumidification pipe set on the side of the cylindrical movable filter screen to remove moisture from the intake airflow using the heat inside the metering box.

[0006] A further improvement of the technical solution of the present invention is that: an exhaust port is fixedly connected to the bottom surface of the metering box, a limit block is fixedly connected to the top side of the module assembly plate, and a sliding bracket is fixedly connected to the inside of the module assembly plate.

[0007] A further improvement of the technical solution of the present invention is that: a baffle is slidably connected inside the sliding bracket, and an elastic pull strap is fixedly connected to the bottom surface of the baffle, with one end of the elastic pull strap fixedly connected to the back of the sliding bracket.

[0008] A further improvement of the technical solution of the present invention is that: a mounting bracket is fixedly connected to the bottom back of the module assembly plate, a baffle two is movably connected to the bottom back of the module assembly plate, a reset spring is fixedly connected to the side of the baffle two, and one end of the reset spring is fixedly connected to the back of the module assembly plate.

[0009] A further improvement of the technical solution of the present invention is that: a module bracket is movably connected inside the limiting block; two movable blocks facing opposite directions are movably connected to one end of the top surface of the module bracket; a spring is provided on the bottom surface of the movable blocks; an insert plate is fixedly connected to the back of the module bracket; the insert plate is slidably connected inside the sliding bracket and movably connected to the side of the baffle.

[0010] A further improvement of the technical solution of the present invention is that: a second module bracket is slidably connected inside the bottom side of the module assembly plate, one end of the outer surface of the second module bracket is slidably connected inside the mounting bracket, and a limit bracket is slidably connected inside the second module bracket.

[0011] A further improvement of the technical solution of the present invention is that: one end of the limiting bracket is snapped into the inside of the mounting bracket, a limiting rod is slidably connected to the inside of the side of the limiting bracket, a linkage rod is movably connected to the side of the limiting rod, and one end of the linkage rod is movably connected to one end of the inside of the limiting bracket.

[0012] A further improvement of the technical solution of the present invention is that: a cabinet door is movably connected to the side of the cabinet door bracket, an observation window is fixedly connected to the inside of the cabinet door, and a protective chain plate is slidably connected to the inside of the cabinet door.

[0013] A further improvement of the technical solution of the present invention is that: a filter support is fixedly connected to the back of the heat dissipation bracket, the cylindrical movable filter is rotatably connected to the inside of the sliding bracket, an air guide bracket is fixedly connected to the side of the filter support, the waste heat dehumidification pipe is fixedly connected to the inside of the air guide bracket, an exhaust duct is fixedly connected to the input end of the air guide bracket, the exhaust duct is fixedly connected to the output end of the exhaust port, and an exhaust pipe is fixedly connected to the output end of the air guide bracket.

[0014] A further improvement of the technical solution of the present invention is that: a heat dissipation fan is provided inside the heat dissipation bracket; one end of the cylindrical movable filter screen passes through the side of the filter screen bracket and is fixedly connected to a synchronous wheel; a synchronous belt is movably connected to the outer surface of the synchronous wheel; a scraper is fixedly connected inside the filter screen bracket; the scraper is set on the bottom surface of the cylindrical movable filter screen; and a waste bin is fixedly connected to the side of the scraper.

[0015] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows: 1. This invention provides a modular expansion-based multi-specification electricity metering box. By selecting to fix the electrical components to be installed inside the module bracket two or through the side of one or more module brackets one according to the actual size and specifications of the electrical components to be installed, the electrical components are installed to the corresponding area of ​​the module assembly plate, completing the multi-module combination operation and achieving sufficient protection function. During normal operation, the protective chain plate can be folded and stored inside the cabinet door. At this time, the operating status and specific readings of each module inside the metering box can be directly observed through the observation window. There is no need to frequently open the cabinet door, which ensures the stable working status of each module inside the metering box and ensures that the equipment can operate stably for a long time.

[0016] 2. This invention provides a modular expansion-based multi-specification electricity metering box. By connecting the large-specification electrical components or mounting rails to be fixed to multiple module brackets, and ensuring that the spacing of each module bracket matches the opening size of the upper half of the module assembly plate, after the module brackets and electrical components are fixed, the insert plate is aligned with the side opening of the module bracket and inserted. The insert plate drives the limit bracket to move, thereby opening the side opening of the module assembly plate. When one end of the module bracket is inserted into the limit block, the spring cooperates with the movable block to lock the module bracket to the side of the limit block, ensuring that the electrical components mounted on the side of the module bracket are stable and reliable. Small and relatively fragile electrical components can be assembled inside the second module bracket. At this time, the second module bracket provides a stable mounting base and protection for the electrical components. Then, the second module bracket is inserted into the side bottom of the module assembly plate. The second baffle opens synchronously with the insertion of the second module bracket, allowing airflow to enter the second module bracket to dissipate heat from the electrical components. At this time, the limit bracket is engaged in the slot inside the mounting bracket to ensure the stability of the equipment during long-term operation. By pressing the pressure plate on the side of the movable card block, the movable card block can be stored inside the module bracket one. At this time, the module bracket one can be taken out from the side of the limiting card block, and the elastic pull belt drives the baffle one to reset, thereby closing the opening end of the module assembly board and preventing the heat dissipation airflow from flowing to other areas and affecting the overall heat dissipation efficiency. Pulling the limit lever will drive the linkage rod to pull the locking block on the side of the limit bracket. Then, the second module bracket can be removed from the bottom side of the module assembly plate for inspection or replacement. After that, the reset spring will drive the second baffle to quickly reset, thereby closing the opening end of the module assembly plate.

[0017] 3. This invention provides a modular expansion-based multi-specification electricity metering box. Airflow is driven by a cooling fan to enter from the input end of the heat dissipation bracket. After being filtered by a low-speed rotating cylindrical movable filter, the airflow enters the metering box to dissipate heat from the electrical components. While filtering the airflow, the filter impurities accumulated on the surface of the cylindrical movable filter are scraped off by a scraper and collected inside the dirt bin, ensuring that the cylindrical movable filter still has good air permeability during long-term operation. As air continues to enter the metering chamber, excess airflow carrying heat is transported to the air guide bracket through the exhaust port and exhaust duct. The airflow is then transported to the waste heat dehumidification pipe through the air guide bracket. The high temperature on the surface of the waste heat dehumidification pipe can dehumidify the airflow entering the filter bracket, preventing moisture in the air from damaging electrical components. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the metering box unit of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure of the middle module assembly board; Figure 4 For the present invention Figure 3 A structural schematic diagram of the middle module bracket; Figure 5 For the present invention Figure 3 Schematic diagram of the structure of the second module bracket; Figure 6 For the present invention Figure 2Schematic diagram of the middle box door bracket; Figure 7 This is a schematic diagram of the auxiliary heat dissipation unit of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the heat dissipation bracket; Figure 9 For the present invention Figure 7 Schematic diagram of the structure of the cylindrical movable filter screen In the diagram: 1. Fixed bracket; 2. Metering box unit; 21. Metering box body; 22. Module assembly plate; 23. Box door bracket; 24. Exhaust port; 25. Limiting block; 26. Sliding bracket; 27. Baffle one; 28. Elastic pull strap; 29. ​​Mounting bracket; 210. Baffle two; 211. Reset spring; 212. Module bracket one; 213. Movable block; 214. Spring; 215. Insert plate; 216. Module bracket two; 217. 218. Limiting bracket; 219. Limiting rod; 220. Linkage rod; 221. Observation window; 222. Protective chain plate; 222. Cabinet door; 3. Auxiliary heat dissipation unit; 31. Heat dissipation bracket; 32. Exhaust duct; 33. Air guide bracket; 34. Waste heat dehumidification pipe; 35. Exhaust pipe; 36. Filter support; 37. Heat dissipation fan; 38. Cylindrical movable filter; 39. Synchronous pulley; 310. Scraper; 311. Dirt bin; 312. Synchronous belt. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to embodiments: Example 1: As Figure 1-9 As shown, the present invention provides a multi-specification electricity metering box adapted for modular expansion, including a fixed bracket 1. The fixed bracket 1 is provided with a metering box unit 2 with modular expansion function. The back of the metering box unit 2 is provided with an auxiliary heat dissipation unit 3 that can use the residual heat inside the metering box unit 2 to remove air moisture and perform active heat dissipation. The metering box unit 2 includes a metering box body 21 fixedly installed inside the fixed bracket 1, a modular assembly plate 22 set inside the metering box body 21 for positioning and installing target electrical components, and a box door bracket 23 set on the side of the metering box body 21 to realize reading observation under the premise of ensuring the sealing of the box body. The metering box 21 has openings on both the front and back. One end is for heat dissipation airflow, and the other end is for assembling the required electrical components inside the metering box 21. The metering box 21 has three exhaust ports 24 at the bottom, which are located in an area that does not affect the normal operation inside the box. An exhaust port 24 is fixedly connected to the bottom surface of the metering box 21. A limit block 25 is fixedly connected to the top side of the module assembly plate 22. A sliding bracket 26 is fixedly connected inside the module assembly plate 22. A baffle 27 is slidably connected inside the sliding bracket 26. An elastic pull strap 28 is fixedly connected to the bottom surface of the baffle 27. One end of the elastic pull strap 28 is fixedly connected to the back of the sliding bracket 26. An installation bracket 29 is fixedly connected to the bottom back of the module assembly plate 22. A baffle 210 is movably connected to the bottom back of the module assembly plate 22. A reset spring 211 is fixedly connected to the side of the baffle 210. One end of the reset spring 211 is fixedly connected to the back of the module assembly plate 22. The module assembly plate 22 is divided into upper and lower areas, which are used to fix electrical components of different specifications. The upper half of the module assembly plate 22 is equipped with multiple sets of sliding brackets 26 for fixing large electrical components individually or in combination. Each row of two adjacent and opposite sliding brackets 26 forms a group. The side of the sliding bracket 26 is provided with a slot that is compatible with the insert plate 215. The elastic pull strap 28 at the bottom of the baffle 27 can realize the quick reset of the baffle 27. The lower half of the module assembly plate 22 is used to install independent small-sized electrical components. The lower half of the reset spring 211 has multiple through holes, and each through hole is equipped with two baffles 210 facing opposite directions. The side of the cabinet door bracket 23 is movably connected to the cabinet door 222, the inside of the cabinet door 222 is fixedly connected to the observation window 220, and the inside of the cabinet door 222 is slidably connected to the protective chain plate 221. The cabinet door bracket 23 is equipped with two cabinet doors 222 facing each other on the side. The sides of the two cabinet doors 222 are equipped with buckles that can be locked by a lock. The protective chain plate 221 is composed of multiple protective plates connected by hinges. It can slide left and right along the inside of the cabinet door 222, and its side is equipped with a magnetic block that can be attracted to the inside of the cabinet door 222.

[0020] In this embodiment, the electrical components are installed into the corresponding area of ​​the module assembly plate 22 by selecting to fix them inside the module bracket 216 or by fixing them through the side of one or more module brackets 212, according to the actual size and specifications of the electrical components to be installed. This completes the multi-module combination operation and achieves sufficient protection. During normal operation of the equipment, the protective chain plate 221 can be folded and stored inside the cabinet door 222. At this time, the operating status and specific readings of each module inside the metering box 21 can be directly observed through the observation window 220. There is no need to frequently open the cabinet door 222, which ensures the stable working status of each module inside the metering box 21 and ensures that the equipment can operate stably for a long time.

[0021] Example 2: As Figure 1-9As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, a module bracket 212 is movably connected inside the limiting block 25, and two opposing movable blocks 213 are movably connected to one end of the top surface of the module bracket 212. A spring 214 is provided on the bottom surface of the movable blocks 213, and an insert plate 215 is fixedly connected to the back of the module bracket 212. The insert plate 215 is slidably connected inside the sliding bracket 26 and movably connected to the side of the baffle 27. The back of the module bracket 212 is equipped with two movable blocks 213 facing each other, one end of which passes through the side opening of the module bracket 212. By pressing the two movable blocks 213 simultaneously, they can be driven to retract into the module bracket 212. There are two insert plates 215. The side of the sliding bracket 26 has an opening that matches the insert plate 215. The insert plate 215 can drive the sliding bracket 26 to move, thereby opening the side top opening of the module assembly plate 22. Depending on the size and specifications of the electrical components to be installed, either module bracket 1 212 or module bracket 2 216 can be selected for fixing. Multiple module brackets 1 212 can work together to fix large electrical components or electrical component mounting tracks. Module bracket 2 216 is mainly used for fixing and protecting small electrical components. A second module bracket 216 is slidably connected inside the bottom side of the module assembly plate 22. One end of the outer surface of the second module bracket 216 is slidably connected inside the mounting bracket 29. A limit bracket 217 is slidably connected inside the second module bracket 216. One end of the limit bracket 217 is snapped into the mounting bracket 29. A limit rod 218 is slidably connected inside the side of the limit bracket 217. A linkage rod 219 is movably connected to the side of the limit rod 218. One end of the linkage rod 219 is movably connected to one end inside the limit bracket 217. The side of the second module bracket 216 is provided with a sliding groove that is adapted to the mounting bracket 29. The two second module brackets 216 can limit the positioning bracket 217. The side of the positioning bracket 217 is provided with a slot, and one end of it can move through the slot, thereby driving the locking block configured at one end of the positioning bracket 217 to move. The limiting pull rod 218 can slide along the inside of the side of the positioning bracket 217. One end of it is connected to two linkage rods 219. When the limiting pull rod 218 moves, it can drive the linkage rods 219 to move, and through the movement of the linkage rods 219, it pulls the locking block configured at one end of the positioning bracket 217 to move.

[0022] In this embodiment, by connecting the large-sized electrical components or mounting rails to be fixed to multiple module brackets 212, and ensuring that the spacing of each module bracket 212 matches the opening size of the upper half of the module assembly plate 22, after the module brackets 212 and electrical components are fixed, the insert plate 215 is inserted into the side opening of the module bracket 216. The insert plate 215 drives the limiting bracket 217 to move, thereby opening the side opening of the module assembly plate 22. When one end of the module bracket 212 is inserted into the limiting block 25, the spring 214 cooperates with the movable block 213 to lock the module bracket 212 to the side of the limiting block 25, ensuring that the electrical components mounted on the side of the module bracket 212 are stable and reliable. Small and relatively fragile electrical components can be assembled inside the second module bracket 216. At this time, the second module bracket 216 provides a stable mounting base and protection for the electrical components. Then, the second module bracket 216 is inserted into the side bottom of the module assembly plate 22. The second baffle 210 opens synchronously with the insertion of the second module bracket 216, allowing airflow to enter the second module bracket 216 to dissipate heat from the electrical components. At this time, the limit bracket 217 is engaged in the slot inside the mounting bracket 29 to ensure the stability of the equipment during long-term operation. By pressing the pressure plate on the side of the movable card block 213, the movable card block 213 can be stored inside the module bracket 212. At this time, the module bracket 212 can be taken out from the side of the limiting card block 25. The elastic pull strap 28 drives the baffle 27 to reset, thereby closing the opening end of the module assembly plate 22 and preventing the heat dissipation airflow from flowing to other areas and affecting the overall heat dissipation efficiency. Pulling the limit lever 218 can drive the linkage rod 219 to pull the locking block on the side of the limit bracket 217. Then, the module bracket 216 can be removed from the bottom side of the module assembly plate 22 for inspection or replacement. After that, the reset spring 211 drives the baffle 210 to quickly reset, thereby closing the opening end of the module assembly plate 22.

[0023] Example 3: As Figure 1-9 As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, the auxiliary heat dissipation unit 3 includes a heat dissipation bracket 31 fixedly connected to the back of the metering box 21, a cylindrical movable filter 38 disposed inside the back of the heat dissipation bracket 31 for intercepting and filtering impurity particles in the intake airflow, and a waste heat dehumidification pipe 34 disposed on the side of the cylindrical movable filter 38 for removing moisture from the intake airflow by utilizing the heat inside the metering box 21. A motor is configured on the side of the filter support 36 to drive the cylindrical movable filter 38 to rotate at low speed. The four cylindrical movable filters 38 can rotate synchronously through the cooperation of the synchronous pulley 39 and the synchronous belt 312. The scraper 310 is arranged at the bottom of the cylindrical movable filter 38 and is set in a non-contact manner with the cylindrical movable filter 38. The dirt bin 311 configured on the side of the scraper 310 can be used to collect the impurities scraped off by the scraper 310. A filter support 36 is fixedly connected to the back of the heat dissipation bracket 31. A cylindrical movable filter 38 is rotatably connected inside the sliding bracket 26. An air guide bracket 33 is fixedly connected to the side of the filter support 36. A waste heat dehumidification pipe 34 is fixedly connected inside the air guide bracket 33. An exhaust duct 32 is fixedly connected to the input end of the air guide bracket 33. The exhaust duct 32 is fixedly connected to the output end of the exhaust port 24. An exhaust pipe 35 is fixedly connected to the output end of the air guide bracket 33. A heat dissipation fan 37 is installed inside the heat dissipation bracket 31. One end of the cylindrical movable filter screen 38 passes through the side of the filter screen support 36 and is fixedly connected to the synchronous wheel 39. The outer surface of the synchronous wheel 39 is movably connected to the synchronous belt 312. The inside of the filter screen support 36 is fixedly connected to the scraper 310. The scraper 310 is set on the bottom surface of the cylindrical movable filter screen 38. The side of the scraper 310 is fixedly connected to the sludge bin 311. The air guide bracket 33 has an air duct for airflow; the air guide bracket 33 is connected to the waste heat dehumidification pipe 34, and the airflow inside the air guide bracket 33 can be transported to the waste heat dehumidification pipe 34 through the air duct. The waste heat dehumidification pipe 34 is made of a material with excellent thermal conductivity.

[0024] In this embodiment, the airflow is driven by the cooling fan 37 to enter from the input end of the heat dissipation bracket 31. After being filtered by the low-speed rotating cylindrical movable filter 38, the airflow enters the metering box 21 to dissipate heat from the electrical components. While filtering the airflow, the filter impurities accumulated on the surface of the cylindrical movable filter 38 are scraped off by the scraper 310 and collected in the sludge bin 311, ensuring that the cylindrical movable filter 38 still has good air permeability in long-term working conditions. As air continues to enter the metering box 21, excess airflow carrying heat is transported to the air guide bracket 33 through the cooperation of the exhaust port 24 and the exhaust duct 32. The airflow is then transported to the waste heat dehumidification pipe 34 through the air guide bracket 33. The high temperature on the surface of the waste heat dehumidification pipe 34 can dehumidify the airflow entering the filter bracket 36, preventing moisture in the air from damaging electrical components.

[0025] The working principle of this modularly extended multi-specification electricity metering box will be explained in detail below.

[0026] like Figure 1-9As shown, by accurately selecting the installation and fixing method according to the actual size and specifications of the electrical components to be installed: they can be fixed inside the module bracket 216 or fixed through the side of one or more module brackets 212, and the electrical components can be accurately installed into the preset installation area of ​​the module assembly plate 22 to complete the collaborative assembly of multiple modules, while ensuring that the electrical components obtain reliable protection performance. During normal operation of the equipment, the protective chain plate 221 can be folded and stored inside the cabinet door 222. At this time, the operator can directly observe the operating status and specific metering readings of each module inside the metering box 21 through the observation window 220. There is no need to frequently open the cabinet door 222, which effectively ensures the stable operating conditions of each module inside the metering box 21 and ensures the long-term reliable operation of the equipment. For fixing large electrical components or mounting rails: First, connect them to multiple module brackets 212. During the connection process, ensure that the spacing of each module bracket 212 is precisely matched with the opening size of the upper half of the module assembly plate 22. After the module brackets 212 and electrical components are fixed, insert the insert plate 215 into the side opening of the module bracket 216. Drive the limit bracket 217 to move through the insert plate 215, thereby opening the side opening of the module assembly plate 22. When one end of the module bracket 212 is inserted into the limit block 25, the module bracket 212 is locked to the side of the limit block 25 by the cooperation of the spring 214 and the movable block 213, ensuring the installation stability of the electrical components mounted on the side of the module bracket 212.

[0027] For small-sized and relatively fragile electrical components: they can be assembled inside module bracket 216, which provides a stable mounting reference surface and protective barrier for the electrical components; then, module bracket 216 is aligned with the bottom side of module assembly plate 22 and inserted, and baffle 210 opens synchronously with the insertion of module bracket 216, allowing airflow to enter the interior of module bracket 216 to dissipate heat from the electrical components; at this time, limit bracket 217 is engaged in the slot inside mounting bracket 29, further ensuring the long-term stability of the equipment; The disassembly process of module bracket 212: By pressing the pressure plate on the side of the movable block 213, the movable block 213 can be stored inside the module bracket 212; at this time, the module bracket 212 can be taken out from the side of the limiting block 25, and then the elastic pull strap 28 drives the baffle 27 to reset, thereby closing the opening end of the module assembly plate 22 and preventing the heat dissipation airflow from flowing to other areas and affecting the overall heat dissipation efficiency; The disassembly process of module bracket 216: Pull the limit rod 218, which will drive the linkage rod 219 to pull the locking block on the side of the limit bracket 217; then the module bracket 216 can be removed from the bottom side of the module assembly plate 22 for maintenance or replacement; after the operation is completed, the reset spring 211 drives the baffle 210 to quickly reset, thereby closing the opening end of the module assembly plate 22; The heat dissipation and filtration system operates by having the cooling fan 37 drive airflow into the heat dissipation bracket 31 from the input end. After being filtered by the low-speed rotating cylindrical movable filter 38, the airflow is delivered to the metering box 21 to complete the heat dissipation of the electrical components. While the cylindrical movable filter 38 filters the airflow, the filter impurities accumulated on its surface are scraped off by the scraper 310 and collected in the sludge bin 311, effectively ensuring that the cylindrical movable filter 38 still has good ventilation performance under long-term working conditions. Operating principle of waste heat dehumidification system: As air continuously enters the metering box 21, excess airflow carries heat and is transported to the air guide bracket 33 through the cooperation of exhaust port 24 and exhaust duct 32. The airflow is guided by the air guide bracket 33 to the waste heat dehumidification pipe 34. The high temperature on the surface of the waste heat dehumidification pipe 34 is used to dehumidify the airflow entering the filter bracket 36, so as to avoid the moisture in the air from corroding or short-circuiting the electrical components.

[0028] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements made without departing from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A modularly expandable multi-specification electricity metering box, including a fixed bracket (1), characterized in that: The fixed bracket (1) is equipped with a metering box unit (2) with modular expansion function. The back of the metering box unit (2) is equipped with an auxiliary heat dissipation unit (3) that can use the residual heat inside the metering box unit (2) to remove air moisture and complete active heat dissipation. The metering box unit (2) includes a metering box (21) fixedly installed inside the fixed bracket (1), a module assembly plate (22) set inside the metering box (21) for positioning and installing target electrical components, and a box door bracket (23) set on the side of the metering box (21) to realize reading observation under the premise of ensuring the sealing of the box. The auxiliary heat dissipation unit (3) includes a heat dissipation bracket (31) fixedly connected to the back of the metering box (21), a cylindrical movable filter (38) set inside the back of the heat dissipation bracket (31) for intercepting and filtering impurity particles in the intake airflow, and a waste heat dehumidification pipe (34) set on the side of the cylindrical movable filter (38) to remove moisture from the intake airflow using the heat inside the metering box (21).

2. The modularly expandable multi-specification meter adaptable energy metering box according to claim 1, characterized in that: An exhaust port (24) is fixedly connected to the bottom surface of the metering box (21), a limit block (25) is fixedly connected to the top side of the module assembly plate (22), and a sliding bracket (26) is fixedly connected inside the module assembly plate (22).

3. The modularly expandable multi-specification meter adaptable energy metering box according to claim 2, characterized in that: The sliding bracket (26) has a baffle (27) slidably connected inside. An elastic pull strap (28) is fixedly connected to the bottom surface of the baffle (27). One end of the elastic pull strap (28) is fixedly connected to the back of the sliding bracket (26).

4. The modularly expandable multi-specification meter adaptable energy metering box according to claim 3, characterized in that: The bottom back of the module assembly plate (22) is fixedly connected to a mounting bracket (29), and the bottom back of the module assembly plate (22) is movably connected to a baffle plate two (210). The side of the baffle plate two (210) is fixedly connected to a reset spring (211), and one end of the reset spring (211) is fixedly connected to the back of the module assembly plate (22).

5. The modularly expandable multi-specification meter adaptable energy metering box according to claim 4, characterized in that: The limiting block (25) is internally connected to a module bracket (212). One end of the top surface of the module bracket (212) is movably connected to two opposing movable blocks (213). The bottom surface of the movable blocks (213) is provided with a spring (214). The back of the module bracket (212) is fixedly connected to a plate (215). The plate (215) is slidably connected inside the sliding bracket (26) and movably connected to the side of the baffle (27).

6. The modularly expandable multi-specification meter adaptable energy metering box according to claim 5, characterized in that: The module assembly plate (22) has a module bracket two (216) slidably connected inside the bottom side of the module bracket. One end of the outer surface of the module bracket two (216) is slidably connected inside the mounting bracket (29). The module bracket two (216) has a limit bracket (217) slidably connected inside.

7. The modularly expandable multi-specification meter adaptable energy metering box according to claim 6, characterized in that: One end of the limiting bracket (217) is snapped into the inside of the mounting bracket (29). A limiting rod (218) is slidably connected to the inside of the side of the limiting bracket (217). A linkage rod (219) is movably connected to the side of the limiting rod (218). One end of the linkage rod (219) is movably connected to one end of the inside of the limiting bracket (217).

8. The modularly expandable multi-specification meter adaptable energy metering box according to claim 7, characterized in that: The cabinet door bracket (23) is movably connected to the side of the cabinet door (222), and the cabinet door (222) is fixedly connected to the inside of the cabinet door (222). The cabinet door (222) is slidably connected to the inside of the cabinet door (222).

9. The modularly expandable multi-specification meter adaptable energy metering box according to claim 8, characterized in that: A filter support (36) is fixedly connected to the back of the heat dissipation bracket (31). The cylindrical movable filter (38) is rotatably connected to the inside of the sliding bracket (26). A wind guide bracket (33) is fixedly connected to the side of the filter support (36). The waste heat dehumidification pipe (34) is fixedly connected to the inside of the wind guide bracket (33). An exhaust duct (32) is fixedly connected to the input end of the wind guide bracket (33). The exhaust duct (32) is fixedly connected to the output end of the exhaust port (24). An exhaust pipe (35) is fixedly connected to the output end of the wind guide bracket (33).

10. The modularly expandable multi-specification meter adaptable energy metering box according to claim 9, characterized in that: The heat dissipation bracket (31) is equipped with a heat dissipation fan (37). One end of the cylindrical movable filter screen (38) passes through the side of the filter screen bracket (36) and is fixedly connected to a synchronous pulley (39). The outer surface of the synchronous pulley (39) is movably connected to a synchronous belt (312). The filter screen bracket (36) is fixedly connected to a scraper (310). The scraper (310) is located on the bottom surface of the cylindrical movable filter screen (38). The side of the scraper (310) is fixedly connected to a sludge bin (311).

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