Electric energy metering box

Abstract

The utility model discloses an electric energy metering box, which belongs to the technical field of electric energy metering and comprises an outer box body, an inner box body is fixedly mounted in the outer box body, a partition plate group with a partition plate type split structure is mounted in the inner box body, and the interior of the inner box body is divided into a plurality of metering terminal shielding spacing cavities by the partition plate group. According to the utility model, the inner box body is divided into a plurality of metering terminal shielding interval cavities through the partition plate groups, and independent electromagnetic shielding spaces are formed in cooperation with the metal shielding layers arranged on the peripheral side walls and the rear wall in a covering manner; the configuration of the radio frequency code scanner realizes the rapid acquisition and intelligent identification of the information of the metering terminal, data verification can be completed without opening the box, the observation window with the metal transparent isolation gate is matched, the electromagnetic shielding is considered while the visual monitoring is ensured, and the defect that the protection and shielding of the observation window of the existing product are difficult to consider is made up.

Description

Technical Field

[0001] This utility model relates to the field of electrical energy metering technology, specifically to an electrical energy metering box. Background Technology

[0002] As the power system transforms towards digitalization and intelligence, electricity metering boxes, as core equipment for trade settlement and electricity consumption monitoring, face higher requirements for operational stability, metering accuracy, and ease of maintenance. A search revealed a novel AI-powered intelligent electricity metering box disclosed in Chinese patent application CN120933796A. While it achieves basic intelligent data acquisition functions, it still has shortcomings in its structural design.

[0003] 1) Traditional and some existing metering boxes mostly adopt an integrated chamber design, with the internal metering terminal, control module and expansion components mixed together. This not only leads to the cross-tangling and messy wiring, which can easily cause wiring errors and safety hazards, but also makes the metering terminal susceptible to external electromagnetic waves and interference between internal components due to the lack of a targeted electromagnetic shielding structure, resulting in increased metering errors. This interference problem is more prominent, especially in industrial scenarios or high-voltage environments.

[0004] 2) Traditional metering boxes rely heavily on on-site drilling for installation, resulting in poor adaptability and low installation efficiency. Internal partitions are often fixed structures, making it impossible to flexibly adjust the chamber layout according to the specifications of the metering terminals. Subsequent maintenance or expansion requires disassembling the entire structure, which is cumbersome and labor-intensive. Furthermore, some existing metering boxes use ordinary transparent materials for their observation windows, which, while enabling visual monitoring, fail to meet electromagnetic shielding requirements and offer insufficient protection, allowing dust and moisture to easily penetrate the box. Some products lack efficient detachable installation structures, making it difficult to adapt to the flexible installation needs of different terminal specifications. Therefore, existing electricity metering boxes still have significant room for improvement in the integrated design of shielding and anti-interference, installation flexibility, and structural protection. Utility Model Content

[0005] An embodiment of this utility model provides an electricity metering box, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides an electricity metering box, including an outer casing. An inner casing is fixedly installed inside the outer casing. A partition group with a split structure is installed inside the inner casing, dividing the interior of the inner casing into multiple metering terminal shielding compartments. A central control compartment and an expansion compartment are respectively provided on one side and the bottom of the outer casing. The partition group is detachably connected to the inner wall of the inner casing via a detachable quick-installation mechanism. An RFID scanner is installed inside each metering terminal shielding compartment. The peripheral side walls and rear wall of each metering terminal shielding compartment are covered with a metal shielding layer. A front door is hinged to the front of the outer casing, and an observation door is hinged to the front of the front door. A window is opened on the surface of the observation door at the position corresponding to the metering terminal shielding compartment. An observation window with a metal transparent isolation grid is installed at the window. A dedicated installation structure is integrally designed on the back of the outer casing.

[0007] As a preferred embodiment of this utility model: the internal partition group of the metering terminal shielding interval cavity is adapted to the installation arrangement of the metering terminal, and the metal shielding layer in the metering terminal shielding interval cavity covers the internal surface of the partition group and the inner box.

[0008] As a preferred embodiment of this utility model: the central control compartment is located on one side of the metering terminal shielding compartment, and a first mounting bracket adapted to the installation of the central processing unit and the remote communication device is installed inside the central control compartment.

[0009] As a preferred embodiment of this utility model: the extended interval cavity is located at the bottom of the shielding interval cavity of the metering terminal, and the interior of the extended interval cavity is adapted to a second mounting bracket for the expansion installation of the circuit breaker.

[0010] As a preferred embodiment of the present invention: the detachable quick-installation mechanism includes a first snap-fit ​​groove formed on the inner wall of the inner box, the first snap-fit ​​groove being at least two, the end of the horizontal plate of the partition group engaging with the first snap-fit ​​groove, the surface of the vertical plate of the partition group having a second snap-fit ​​groove, and the horizontal plate of the partition group engaging with and slidingly connecting with the second snap-fit ​​groove.

[0011] In a preferred embodiment of this utility model: the radio frequency (RF) scanner is located on the top of the inner wall of the shielding cavity of the metering terminal, and the RF scanner is fixedly connected to the inner wall of the inner box. The scanning sensing end of the RF scanner faces the internal installation area of ​​the shielding cavity of the metering terminal. A third mounting bracket for installing the metering terminal is fixedly connected to the inner wall of the inner box. The inner wall of the inner box is also provided with a wire hole for the metering terminal wiring. A rubber ring is embedded inside the wire hole. A wiring shielding box fixedly installed on the back of the inner box is provided on the back of the wire hole.

[0012] As a preferred embodiment of this utility model, the metal shielding layer is a metal alloy shielding plate, and the metal shielding layer is fixedly connected to the inner box and the partition assembly by means of adhesive bonding or bolt connection.

[0013] As a preferred embodiment of this utility model, the metal transparent isolation grille of the observation window is a hollow metal mesh structure, and the observation window is fixedly connected to the window edge of the front door by a bolt group.

[0014] As a preferred embodiment of this utility model, the special mounting structure includes several mounting ear plates integrally formed on the back of the outer casing, and the mounting ear plates are provided with waist-shaped mounting holes.

[0015] As a preferred embodiment of this utility model: the front door is locked to the outer casing via a door lock, the observation door is locked to the front door via a door lock, and when the observation door is closed, the inner side of the observation door abuts against and fixes the partition assembly.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1) The inner casing of this utility model is divided into multiple metering terminal shielding cavities by partitions. Combined with the metal shielding layer covering the surrounding side walls and rear wall, it forms an independent electromagnetic shielding space. Compared with the existing technology, which does not specifically strengthen the shielding structure, it can more effectively block the intrusion of external electromagnetic waves and the mutual interference between internal components, ensuring the metering accuracy of the metering terminal. At the same time, the wiring shielding box with the wiring hole further blocks the interference conduction path, adapting to the use requirements of complex electromagnetic environments. The partition design of the central control cavity and the expansion cavity realizes the classified installation of the central processing unit, remote communication device and circuit breaker components. Combined with the standardized wiring of the wiring hole, it effectively solves the problem of wire crossing and tangling, and reduces the risk of wiring errors.

[0018] 2) The detachable quick-installation mechanism of this utility model adopts a snap-fit ​​structure of the first and second snap-fit ​​slots, which allows the partition assembly to be quickly disassembled and flexibly adjusted to adapt to the installation requirements of different specifications of metering terminals. With the waist-shaped mounting holes of the back-mounted integrated special mounting structure, the installation process is greatly simplified and the installation efficiency is improved. The configuration of the radio frequency barcode scanner enables rapid collection and intelligent identification of metering terminal information, and data verification can be completed without opening the box. With the observation window with a metal transparent isolation grid, both visual monitoring and electromagnetic shielding performance are ensured, making up for the shortcomings of existing products where the observation window cannot simultaneously achieve protection and shielding. The design of the partition assembly being pressed and fixed when the observation door is closed further improves the structural stability. The dual protection structure of the front door and the observation door not only enhances the sealing of the box, but also facilitates daily maintenance, meeting the development requirements of "full equipment perception and fully intelligent operation and maintenance" of the digital metering system. Attached Figure Description

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

[0020] Figure 2 This is one of the structural schematic diagrams of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the present invention;

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

[0023] Figure 5 This is one of the schematic diagrams of the inner box structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the wiring shielding box structure of this utility model;

[0025] Figure 7 This is a schematic diagram of the partition assembly structure of this utility model.

[0026] In the diagram: 10, outer casing; 100, inner casing; 110, metering terminal shielding compartment; 120, central control compartment; 121, first mounting bracket; 130, extended compartment; 131, second mounting bracket; 200, partition assembly; 210, horizontal plate; 220, vertical plate; 230, second snap-fit ​​slot; 300, detachable quick-installation mechanism; 310, first snap-fit ​​slot; 400, RFID scanner; 410, third mounting bracket; 420, wiring hole; 430, rubber ring; 440, wiring shielding box; 500, metal shielding layer; 600, front door; 610, observation door; 611, window; 620, observation window; 700, special mounting structure; 710, mounting ear plate; 720, waist-shaped mounting hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example

[0029] Please see Figures 1-7This utility model provides an electricity metering box, including an outer casing 10, an inner casing 100 fixedly installed inside the outer casing 10, and a partition assembly 200 with a partition-type split structure installed inside the inner casing 100. The partition assembly 200 divides the interior of the inner casing 100 into multiple metering terminal shielding interval cavities 110. A central control interval cavity 120 and an expansion interval cavity 130 are respectively provided on one side and the bottom of the outer casing 10. The partition assembly 200 is detachably connected to the inner wall of the inner casing 100 through a detachable quick-installation mechanism 300. The shielded cavity 110 is equipped with an RFID scanner 400. The perimeter side walls and rear wall of the metering terminal shielded cavity 110 are covered with a metal shielding layer 500. The front of the outer casing 10 is hinged with a front door 600, and the front of the front door 600 is hinged with an observation door 610. The surface of the observation door 610 is provided with a window 611 at the position corresponding to the shielded cavity 110 of the metering terminal. An observation window 620 with a metal transparent isolation grid is installed at the window 611. The back of the outer casing 10 is designed with a dedicated installation structure 700.

[0030] Specifically, the outer casing 10 provides double protection for the inner casing 100, isolating it from dust and moisture. The partition assembly 200 is detachable and quick-installation mechanism 300 from the inner wall of the inner casing 100, forming multiple independent metering terminal shielding compartments 110 to avoid mutual interference between metering terminals. The central control compartment 120 on one side of the outer casing 10 integrates control components, and the bottom expansion compartment 130 is reserved for expansion space. The metal shielding layer 500 of the metering terminal shielding compartment 110 forms a closed shielding space to block electromagnetic interference. The internal radio frequency scanner 400 collects data in real time, while the front door 600 and the observation door 610 provide double protection. The metal transparent isolation grille of the observation window 620 combines visualization and shielding. The dedicated mounting structure 700 at the back enables the casing to be installed quickly and stably, allowing the power metering box to effectively measure and monitor power.

[0031] In this embodiment: the internal partition group 200 of the metering terminal shielding cavity 110 is adapted to the installation arrangement of the metering terminal, and the metal shielding layer 500 in the metering terminal shielding cavity 110 covers the internal surface of the partition group 200 and the inner box 100.

[0032] Specifically, the partition assembly 200 adopts a split structure, which can be flexibly adjusted according to the specifications of the metering terminal to ensure that the metering terminal is installed tightly and avoids shaking or positioning deviation. The metal shielding layer 500 is fully covered on the inner surface of the partition assembly 200 and the inner box 100, so that the partition assembly 200 has both separation and shielding functions. After the partition assembly 200 separates the inner box 100, the four sides and the rear wall of the shielding partition cavity 110 of each metering terminal are completely covered by the metal shielding layer 500, forming a gapless electromagnetic isolation space, effectively blocking the transmission of electromagnetic signals between the terminal and the outside and between the terminal, ensuring that the metering terminal works stably in an interference-free environment and improving the accuracy of metering data.

[0033] In this embodiment: the central control compartment 120 is located on one side of the metering terminal shielding compartment 110, and the central control compartment 120 is equipped with a first mounting bracket 121 adapted to the installation of the central processing unit and the remote communication device.

[0034] Specifically, the central control compartment 120 is located on one side of the metering terminal shielded compartment 110, which avoids direct contact between the control equipment and the metering terminal, reduces heat conduction, shortens the signal transmission path, and improves transmission efficiency. The first mounting bracket 121 is adapted to the installation requirements of the central processing unit and the remote communication device. The hole fixing method is compatible with mainstream equipment, which can quickly position and install without additional modifications. After the central processing unit is installed, it is connected to the metering terminal and the RFID scanner 400 through a preset interface. The remote communication device is positioned and fixed using the first mounting bracket 121 to ensure stable signal transmission and reception, and realizes the integration of control, acquisition and communication functions. This makes the central control compartment 120 the core of intelligent control and efficiently coordinates the work of various components.

[0035] In this embodiment: the extended interval cavity 130 is located at the bottom of the metering terminal shielding interval cavity 110, and the interior of the extended interval cavity 130 is adapted to the second mounting bracket 131 for the extension installation of the circuit breaker.

[0036] Specifically, the extended partition 130 is located at the bottom of the shielded partition 110 of the metering terminal, without occupying the core installation space. It utilizes vertical space for expansion and facilitates the connection of the extended components with the terminal lines, avoiding wiring chaos. The second mounting bracket 131 adopts an adjustable design to adapt to different specifications and quantities of circuit breaker components, and achieves stable fixation through adjusting the hole position or the snap-fit ​​structure.

[0037] When users need to expand capacity due to increased load or the addition of new circuits, there is no need to modify the main structure of the box. Simply install the new circuit breaker on the second mounting bracket 131 and establish a circuit connection with the metering terminal in the metering terminal shielded compartment 110 through the reserved wiring channel to quickly complete the expansion, ensuring the flexibility and expandability of the metering box.

[0038] In this embodiment: the detachable quick-installation mechanism 300 includes a first snap-fit ​​groove 310 formed on the inner wall of the inner box 100. There are at least two first snap-fit ​​grooves 310. The end of the horizontal plate 210 of the partition assembly 200 is snapped into the first snap-fit ​​groove 310. A second snap-fit ​​groove 230 is formed on the surface of the vertical plate 220 of the partition assembly 200. The horizontal plate 210 of the partition assembly 200 is snapped into the second snap-fit ​​groove 230 and slidably connected.

[0039] Specifically, the detachable quick-installation mechanism 300 enables the quick assembly and precise positioning of the partition assembly 200 through the first snap-fit ​​groove 310 and the second snap-fit ​​groove 230. The inner wall of the inner box 100 has at least two parallel and symmetrical first snap-fit ​​grooves 310, which are precisely matched with the dimensions of the horizontal plate 210 to ensure a stable engagement and convenient installation. The second snap-fit ​​groove 230 on the surface of the vertical plate 220 is adapted to the horizontal plate 210 to achieve a vertical connection and form a grid partition structure. When it is necessary to adjust the chamber layout, only external force needs to be applied to make the vertical plate 220 slide on the horizontal plate 210, so that the space enclosed by the horizontal plate 210 between two adjacent vertical plates 220 can be adjusted, thereby enabling flexible adjustment of the chamber layout. At the same time, the second snap-fit ​​groove 23 has a certain damping effect when sliding with the horizontal plate 210, so that the vertical plate 220 can be fixed after being adjusted to the appropriate position.

[0040] During installation, first insert the horizontal plate 210 into the second snap-fit ​​slot 230 and tighten it, then insert the horizontal plate 210 into the first snap-fit ​​slot 310 to fix it, quickly forming the metering terminal shielding interval cavity 110. When disassembling, the horizontal plate 210 and the vertical plate 220 can be removed by applying force in the opposite direction. No professional tools are required, which is convenient for maintenance or adjustment of the cavity layout.

[0041] In this embodiment: the radio frequency scanner 400 is located on the top of the inner wall of the shielding cavity 110 of the metering terminal, and the radio frequency scanner 400 is fixedly connected to the inner wall of the inner box 100. The scanning sensing end of the radio frequency scanner 400 faces the internal installation area of ​​the shielding cavity 110 of the metering terminal. A third mounting bracket 410 for installing the metering terminal is fixedly connected to the inner wall of the inner box 100. The inner wall of the inner box 100 is also provided with a wire hole 420 for the metering terminal wiring. A rubber ring 430 is embedded inside the wire hole 420. A wiring shielding box 440 fixedly installed on the back of the inner box 100 is provided on the back of the wire hole 420.

[0042] Specifically, the radio frequency scanner 400 is installed on the top of the inner wall of the shielded cavity 110 of the metering terminal. The sensing end is unobstructed. After the metering terminal is fixed by the third mounting bracket 410, its sensing range can completely cover the terminal tag, realizing real-time data acquisition.

[0043] The third mounting bracket 410 is compatible with different terminal installations. The terminal is fixed by bolts or clips to prevent displacement from causing scanning failure. The cable hole 420 provides a dedicated channel for the line. The internal rubber ring 430 seals and protects the insulation layer of the line. The back cable shielding box 440 shields and protects the line to avoid electromagnetic interference, ensure stable signal transmission, and form a complete workflow.

[0044] In this embodiment: the metal shielding layer 500 is a metal alloy shielding plate, and the metal shielding layer 500 is fixedly connected to the inner box 100 and the partition group 200 by means of adhesive or bolt connection.

[0045] Specifically, the metal shielding layer 500 uses a metal alloy shielding plate, which has excellent electromagnetic shielding performance, can reflect and absorb electromagnetic signals, and has high structural strength and is not easily deformed, so it can maintain the shielding effect for a long time. The metal shielding layer 500 is fixed to the inner box 100 and the partition group 200 by bonding or bolting. The bonding method ensures that the contact surfaces are tightly fitted without gaps to avoid shielding failure, while the bolting connection is used in the stress area or maintenance-required parts to prevent detachment and displacement. After fixed installation, the metal shielding layer 500, the inner box 100 and the partition group 200 form an integrated structure, forming a continuous closed shield around the shielding interval cavity 110 of the metering terminal, effectively blocking strong external electromagnetic interference and radiation from internal components, and ensuring that the working environment of the metering terminal is not disturbed.

[0046] In this embodiment: the metal transparent isolation grid of the observation window 620 is a hollow metal mesh structure, and the observation window 620 is fixedly connected to the edge of the window 611 of the front door 600 by bolts.

[0047] Specifically, the metal transparent isolation grid of the observation window 620 is a hollow metal mesh structure, which retains the transparent observation function, allowing staff to check the terminal status inside the metering terminal shielding compartment 110 without opening the box. It also uses the metal properties to fill shielding gaps, forming an electromagnetic shielding closed loop. The observation window 620 is fixed to the edge of the window 611 by bolts, with multiple tightening points to ensure a tight fit without gaps, enhancing installation stability and preventing loosening and falling off. At the same time, it improves the sealing of the box, blocking impurities from entering. Together with the metal shielding layer 500 of the metering terminal shielding compartment 110, it ensures that there are no dead angles in the shielding of the box.

[0048] In this embodiment: the special mounting structure 700 includes a plurality of mounting ear plates 710 integrally formed on the back of the outer casing 10, and the mounting ear plates 710 are provided with waist-shaped mounting holes 720.

[0049] Specifically, the dedicated mounting structure 700 uses mounting ear plate 710 and waist-shaped mounting hole 720 to achieve quick and stable installation of outer box 10. The mounting ear plate 710 and the back of outer box 10 are integrally formed to avoid structural weak points, can bear the weight of the box and internal components, improve installation stability, and prevent deformation and falling off.

[0050] In addition, the waist-shaped mounting hole 720 provides reserved space for installation and adjustment. When the mounting hole position is off or the position needs to be finely adjusted, there is no need to re-drill holes. The bolt can be moved along the long axis to calibrate, reducing the installation difficulty and improving the installation efficiency.

[0051] During installation, the mounting ear plate 710 is placed against the mounting surface, and bolts are inserted and tightened through the waist-shaped mounting holes 720. The multiple ear plates are evenly distributed to ensure balanced force distribution, so that the outer casing 10 is firmly fixed, providing a foundation for the stable operation of the internal components.

[0052] In this embodiment: the front door 600 is locked to the outer casing 10 by a door lock, and the observation door 610 is locked to the front door 600 by a door lock. When the observation door 610 is closed, the inner side of the observation door 610 is pressed and fixed against the partition assembly 200.

[0053] Specifically, the front door 600 is locked to the outer casing 10 via a door lock, forming the first line of protection, enhancing sealing and anti-theft capabilities, and protecting the safety of internal equipment. The observation door 610 is locked to the front door 600 via another door lock, forming the second line of protection. It can be opened independently for observation during normal use, reducing contact between the casing and the outside and lowering the probability of impurities entering. During maintenance, both doors can be opened simultaneously, providing ample operating space. After the observation door 610 is closed and locked, its inner wall and the front face of the partition assembly 200 are in close contact, generating a clamping force. Combined with the locking and fixing of the detachable quick-installation mechanism 300, a double fixing structure is formed, preventing the partition assembly 200 from loosening or shifting, and ensuring the stability of the chamber structure and the accuracy of terminal installation.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electricity metering box, characterized in that, The system includes an outer casing (10), inside which an inner casing (100) is fixedly installed. Inside the inner casing (100) is a partition-type split-structure assembly (200), which divides the interior of the inner casing (100) into multiple metering terminal shielding interval cavities (110). The outer casing (10) has a central control interval cavity (120) and an extended interval cavity (130) on one side and bottom, respectively. The partition assembly (200) is detachably connected to the inner wall of the inner casing (100) via a detachable quick-installation mechanism (300). The metering terminal shielding interval cavities (110)... The internal components of the 0) are equipped with an RFID scanner (400). The periphery and rear walls of the shielding cavity (110) of the metering terminal are covered with a metal shielding layer (500). The front of the outer casing (10) is hinged with a front door (600). The front of the front door (600) is hinged with an observation door (610). The surface of the observation door (610) is provided with a window (611) at the position corresponding to the shielding cavity (110) of the metering terminal. An observation window (620) with a metal transparent isolation grid is installed at the window (611). The back of the outer casing (10) is designed with a special installation structure (700).

2. The electricity metering box according to claim 1, characterized in that, The internal partition group (200) of the metering terminal shielding partition cavity (110) is adapted to the installation arrangement of the metering terminal, and the metal shielding layer (500) in the metering terminal shielding partition cavity (110) covers the internal surface of the partition group (200) and the inner box (100).

3. An electricity metering box according to claim 1, characterized in that, The central control compartment (120) is located on one side of the metering terminal shielding compartment (110), and a first mounting bracket (121) adapted to the installation of the central processing unit and the remote communication device is installed inside the central control compartment (120).

4. An electricity metering box according to claim 1, characterized in that, The extended interval cavity (130) is located at the bottom of the metering terminal shielding interval cavity (110), and the interior of the extended interval cavity (130) is adapted to the second mounting bracket (131) for the extension installation of the circuit breaker.

5. An electricity metering box according to claim 1, characterized in that, The detachable quick-installation mechanism (300) includes a first snap-fit ​​groove (310) formed on the inner wall of the inner box (100). There are at least two first snap-fit ​​grooves (310). The end of the horizontal plate (210) of the partition group (200) is engaged with the first snap-fit ​​groove (310). The surface of the vertical plate (220) of the partition group (200) is provided with a second snap-fit ​​groove (230). The horizontal plate (210) of the partition group (200) is engaged with the second snap-fit ​​groove (230) and slidably connected.

6. An electricity metering box according to claim 1, characterized in that, The radio frequency scanner (400) is located on the top of the inner wall of the shielding cavity (110) of the metering terminal, and the radio frequency scanner (400) is fixedly connected to the inner wall of the inner box (100). The scanning sensing end of the radio frequency scanner (400) faces the internal installation area of ​​the shielding cavity (110) of the metering terminal. The inner wall of the inner box (100) is fixedly connected to a third mounting bracket (410) for installing the metering terminal. The inner wall of the inner box (100) is also provided with a wire hole (420) for the metering terminal wiring. A rubber ring (430) is embedded in the wire hole (420). A wiring shielding box (440) fixedly installed on the back of the wire hole (420) is provided on the back of the inner box (100).

7. An electricity metering box according to claim 1, characterized in that, The metal shielding layer (500) is a metal alloy shielding plate, and the metal shielding layer (500) is fixedly connected to the inner box (100) and the partition group (200) by means of adhesive bonding or bolt connection.

8. An electricity metering box according to claim 1, characterized in that, The metal transparent isolation grille of the observation window (620) is a hollow metal mesh structure, and the observation window (620) is fixedly connected to the edge of the window (611) of the front door (600) by bolts.

9. An electricity metering box according to claim 1, characterized in that, The special mounting structure (700) includes several mounting ear plates (710) integrally formed on the back of the outer casing (10), and the mounting ear plates (710) are provided with waist-shaped mounting holes (720).

10. An electricity metering box according to claim 1, characterized in that, The front door (600) is locked to the outer casing (10) by a door lock, and the observation door (610) is locked to the front door (600) by a door lock. When the observation door (610) is closed, the inner side of the observation door (610) is pressed against the partition group (200) and fixed.

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