Modular electricity metering box

Abstract

The present application relates to the field of power distribution metering facilities, in particular to a modular power metering box, comprising a box body and an assembly, the assembly is transversely arranged in the bottom of the box body, and one end of the assembly extends out of the box body, a holder is longitudinally arranged in the inside of the box body to close one end of the assembly inside the box body, a wind box is arranged outside the box body to communicate with the assembly, a door and a side cover are arranged on the front side of the box body to support the holder, the assembly comprises a core pipe penetrating through the box body, and an inner hole is vertically arranged in the middle section of the top side of the core pipe. The core pipe is used to complete the air duct communication butt joint through plug-in, the assembly process of the heat dissipation pipeline is simple and fast, the plug-in position is automatically locked, a whole row of multiple units share the pipe for heat dissipation, the box door is opened to automatically close the air, one group of box doors is opened to synchronously close the heat dissipation air duct at the position, the opening of the maintenance position is avoided to leak air, the complete heat dissipation gas is ensured to be introduced into the remaining closed working box body, and the stable heat dissipation air pressure of the remaining metering units is ensured.

Description

Technical Field

[0001] This invention relates to the field of power distribution metering facilities, and more specifically to a modular power metering box. Background Technology

[0002] With the large-scale construction of smart grids and the intensive deployment of industrial and commercial power distribution substations and residential power distribution points, modular assembled power metering boxes, with their advantages of being able to add or remove metering units as needed, convenient disassembly and maintenance, and adaptability to different power distribution capacities, are gradually replacing traditional integrated welded metering boxes and becoming the mainstream equipment for power metering and line management in power distribution systems. They are widely used in scenarios such as community power distribution rooms, outdoor power distribution points in industrial parks, and power distribution nodes on municipal branch roads.

[0003] Existing modular metering boxes only achieve mechanical assembly of the box bodies, with multiple metering boxes operating independently. This lack of centralized heat dissipation results in high energy consumption. Furthermore, existing assembled metering boxes are completely isolated, requiring each box to have its own independent fan and exhaust system, leading to high equipment procurement and maintenance costs. Under independent heat dissipation conditions, fan start / stop and airflow cannot be uniformly controlled. During periods of high outdoor temperatures, the heat dissipation efficiency of each box varies significantly, making high-load metering boxes prone to insufficient heat dissipation and meter overheating tripping.

[0004] When using external fans for unified air supply and heat dissipation through multiple pipelines, new enclosures require separate openings and separate installation of heat dissipation components, which does not meet the construction requirements for rapid assembly of power grids. Furthermore, when any set of enclosure doors is opened for component maintenance, the corresponding enclosure is directly exposed for ventilation, making it impossible to shut down the heat dissipation channel of a single enclosure. This results in the inability to timely introduce heat dissipation gas into other metering enclosure units, leading to poor performance. Summary of the Invention

[0005] The purpose of this invention is to provide a modular energy metering box to solve the above-mentioned problems. The air duct is connected and connected by core tubes, and the heat dissipation pipe assembly process is simple and quick, realizing automatic locking of the plug position. It forms a row of multiple units sharing the heat dissipation pipe, and has an automatic air-closing function when the box door is opened. Opening a single box door will simultaneously close the heat dissipation air duct at that location, avoiding air leakage from open maintenance positions, ensuring that the heat dissipation gas is completely introduced into the interior of the remaining closed working boxes, and ensuring the stability of the heat dissipation air pressure of the remaining metering units, as detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides a modular energy metering box, comprising a box body and an assembly, wherein the assembly is laterally disposed at the bottom of the box body; The assembly includes a core tube that penetrates the housing, with a connector and a fitting head respectively provided at both ends of the core tube. The core tubes of adjacent housings are connected by the connector and the fitting head. The core tube is provided with an inner hole that communicates with the inside of the housing. A sleeve that can rotate relative to the core tube is fitted on the outside of the core tube. The sleeve is provided with an outer hole that corresponds to the inner hole. When the sleeve rotates, the outer hole can be made to communicate with or be offset from the inner hole. The housing is provided with a retainer, and the retainer is provided with a baffle for closing the port of the fitting head. The baffle can lock the insertion position after adjacent housings are inserted. An air supply device connected to the core tube is installed on the outside of the housing.

[0007] When using the above-mentioned modular energy metering box, each box serves as a single energy metering unit. When additional metering units are needed, the additional boxes are placed side by side with the installed box on the side away from the wind box. Then, the retainer is pulled forward, and the baffle is moved forward to expose the core tube fitting head. At this time, the outer core tube port of the additional box is inserted into the adjacent box through the through hole, and the plug of the adjacent core tube is connected to the fitting head. Then, the retainer is released, and the baffle is pushed backward by the spring to the limit groove and locked into the stop groove of the plug, thereby locking the insertion position of the core tube of the adjacent box and preventing the plug from being accidentally separated. After adjacent housings are connected by a core tube, air is supplied to all the metering units in the parallel configuration through the air box outside the outermost metering unit. When it is necessary to adjust the heat dissipation state according to the working state of the electrical components inside different metering units, the fine-tuning cylinder of the corresponding metering unit housing assembly is rotated. The threaded engagement between the movable plate and the fine-tuning cylinder changes the lateral position of the fine-tuning cylinder. Since the fine-tuning cylinder and the sleeve rotate and engage, the sleeve slides laterally with the movable plate through the constraint rod. The fine-tuning cylinder then pulls the sleeve laterally to change the lateral position of the sleeve, which changes the lateral staggered state of the outer and inner holes. This allows for the adjustment of the size of the exhaust channel of the core tube inside a single metering unit, achieving targeted adjustment of the air volume. When opening the housing of a metering unit, pull the door forward to open the housing. At the same time, use the pull rope connected in the pull hole to pull the movable disc outside the core tube to rotate. Use the constraint rod inside the movable disc to drive the sleeve to rotate synchronously. The sleeve and the core tube rotate relative to each other, thereby pulling the outer hole and the inner hole to a closed position, so as to seal the heat dissipation and exhaust channel of the metering unit at that location, and maintain the normal heat dissipation of the housing in other unopened locations. Electrical components are installed on several sets of electrical racks within the same enclosure. The weight of the electrical components presses down on the mounting rails and square tubes, thereby moving the vents of the auxiliary tubes at the bottom of the square tubes to the position where they are removed from the sleeve, so as to correspond to the air distribution holes of the square tubes. Based on the installation status of the electrical components on different electrical racks, the distribution of the heat dissipation gas below is automatically adapted. The compression springs provide buffering and reset support for the entire electrical rack. After the electrical components on the mounting rails are removed, the electrical racks are automatically reset and the vents are sealed, increasing the rationality of the heat dissipation gas distribution.

[0008] Preferably, the connector is provided with a stop groove, and the edge of the baffle is provided with a limiting groove that can be longitudinally engaged with the stop groove, for locking the insertion position of the adjacent core tube.

[0009] Preferably, the front side of the housing is provided with a door and a side cover for a support frame. The support frame includes a pull rod that runs longitudinally through the side cover. A spring that pushes the baffle plate backward is sleeved on the pull rod. The compression stroke of the spring is greater than the outer diameter of the fitting head.

[0010] Preferably, a fixed disk is fixed on the core tube, and a movable disk is rotatably arranged on the outside of the fixed disk. The sleeve is in clearance fit with the movable disk through a constraint rod. A winding drum is fixed on the outside of the movable disk, and a pull rope is wound around the outside of the winding drum. The outer end of the pull rope passes through the box body and is connected to the bottom side of the box door.

[0011] Preferably, the door is provided with a pull hole for fixing a pull rope. When the door is rotated open, the pull rope pulls the movable disc, constraint rod, and sleeve to rotate, rotating the outer hole to a position offset from the inner hole, thus sealing the air outlet of the core tube. The sleeve is provided with a rotating groove on the outer side near the movable disc, and a fine-tuning cylinder is rotatably fitted in the rotating groove. The other end of the fine-tuning cylinder is threadedly fitted to the movable disc to adjust the initial tension of the pull rope.

[0012] Preferably, the housing includes a tail plate and two sets of side plates. The bottom of the two sets of side plates is provided with a bottom plate with a closed side cover. A top support and a bottom support are laterally connected between the two sets of side plates. A partition is provided on the top side of the bottom support. The inner cavity of the housing is divided into an upper electrical cavity and a lower pipeline cavity by the partition. The assembly is disposed in the pipeline cavity. The side plates are provided with through holes corresponding to the core tubes.

[0013] Preferably, the bottom side of the tail plate extends forward to form a support plate fixed to the bottom side of the bottom support, and several sets of electrical frames are evenly arranged horizontally inside the electrical cavity. A sliding seat for supporting the vertical sliding of the electrical frames is arranged horizontally on the front side of the tail plate.

[0014] Preferably, the top side of the partition is provided with a vertically penetrating sleeve corresponding to the electrical frame. The electrical frame includes a square tube arranged longitudinally above the partition. The rear end of the square tube is fixed with a mounting rail for a vertically sliding sliding seat. The mounting rail is densely covered with modular holes.

[0015] Preferably, the square tube has several air holes along its length on its top side, and an auxiliary tube that penetrates the sleeve downwards is connected to the bottom side of the square tube. The bottom end of the auxiliary tube is provided with an end cap, and an air hole is provided on the outer side of the bottom end of the auxiliary tube. A compression spring is sleeved on the outer side of the top end of the auxiliary tube. The two ends of the compression spring abut against the square tube and the partition plate respectively to support the auxiliary tube upwards and support the air hole to be retracted into the sleeve and kept in a closed state.

[0016] Preferably, the outer side of the box door is provided with a detachable locking handle for locking the box body. The top of the box body is provided with an exhaust hood and a box cover that form an exhaust mechanism. The box cover is fixed to the top side of the exhaust hood, and the exhaust hood is connected to the box body. The exhaust hood includes a support edge that closes the top opening of the box body. The inner side of the support edge extends upward to form a rim that supports the box cover. Exhaust holes are densely distributed on all four sides of the rim. The outer edge of the box cover extends downward to below the exhaust holes, and an exhaust slit with a height lower than the exhaust holes is formed between the outer edge of the box cover and the support edge.

[0017] The beneficial effects are as follows: 1. By pre-drilling through holes in the side plate, the air duct can be connected and connected directly by inserting the core tube end connector and the fitting head. The newly added metering box does not require on-site drilling or additional heat dissipation pipes and accessories, and the assembly process is simple and quick. At the same time, the retainer and baffle realize the automatic locking of the plug position, without the need for additional bolts to tighten and fix it. This avoids the damage to the anti-corrosion coating of the box and the problem of rust and water leakage caused by on-site drilling, and meets the construction requirements of rapid assembly and on-demand capacity expansion in power distribution sites.

[0018] 2. It has an automatic air-closing function when the cabinet door is opened, ensuring stable heat dissipation for the other cabinets. When a single cabinet door is opened, it simultaneously drives the outer hole of the sleeve and the inner hole of the core tube to rotate and close, automatically shutting off the internal heat dissipation air duct of the maintenance cabinet. This prevents air leakage from the maintenance position and avoids the leakage of heat dissipation airflow from the maintenance cabinet. It ensures that the heat dissipation gas is completely introduced into the interior of the other closed working cabinets, ensuring stable heat dissipation air pressure for the other metering units. It will not cause heat dissipation diversion or heat dissipation failure, thus improving the overall stability of the equipment.

[0019] 3. The lateral displacement of a single set of enclosure sleeves can be adjusted independently to change the overlapping conduction area of ​​the inner hole of the core tube and the outer hole of the sleeve. It can independently adjust the ventilation and heat dissipation air volume of a single enclosure at different positions according to the real-time heat generation of electrical components such as meters and circuit breakers inside the single enclosure. It is specifically designed to increase the heat dissipation air volume for high-load components, reduce the ventilation volume of low-load enclosures, and prevent excessive dust from entering the unloaded enclosures, thus balancing heat dissipation efficiency and dust protection, and is suitable for metering units under different operating conditions.

[0020] 4. The exhaust hood on the top of the box, together with the box cover, forms a sunken exhaust slit, which can not only ensure the smooth exhaust of hot air inside the box, but also prevent outdoor rainwater, fallen leaves, and debris from directly entering the box, thus improving the overall outdoor rain and dust protection capability of the metering box and making it suitable for long-term use in complex outdoor working conditions in residential areas and outdoor power distribution points. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a three-dimensional structural schematic diagram of the present invention; Figure 5 This is a three-dimensional structural schematic diagram of another aspect of the present invention; Figure 6 This is a partial structural breakdown diagram of the present invention; Figure 7 This is a schematic diagram showing the overall structure of the present invention broken down; Figure 8 This is a three-dimensional structural schematic diagram of the tail plate of the present invention; Figure 9 This is a three-dimensional structural diagram of the electrical frame of the present invention; Figure 10 This is a schematic diagram of the internal structure of the housing of the present invention; Figure 11 This is a three-dimensional structural disassembly diagram of the assembly of the present invention; Figure 12 This is a three-dimensional structural diagram of the lid of the present invention.

[0023] The annotations in the attached figures are explained as follows: 1. Housing; 101. Tailplate; 101a. Support plate; 101b. Sliding seat; 102. Side plate; 102a. Pipe hole; 103. Bottom plate; 104. Top support; 105. Bottom support; 2. Assembly components; 201. Core tube; 201a. Inner hole; 201b. Fixing plate; 202. Connector; 202a. Stop groove; 203. Fitting head; 204. Sleeve; 204a. Outer hole; 204b. Rotating groove; 205. Movable plate; 205a. Coil spring; 205b. Winding spool; 206. Fine-tuning cylinder; 207. Constraint rod; 208. Pull rope; 3. Cage; 3 01. Baffle; 301a. Limiting groove; 302. Pull rod; 302a. Pull ring; 303. Spring; 4. Air box; 401. Fan; 5. Box door; 501. Pull cable hole; 502. Locking handle; 6. Box cover; 601. Lifting ring; 7. Partition; 701. Bundle; 8. Electrical frame; 801. Square tube; 801a. Air distribution hole; 802. Mounting guide rail; 802a. Modular hole; 803. Auxiliary pipe; 803a. Air hole; 804. End cap; 805. Compression spring; 9. Side cover; 10. Exhaust hood; 10a. Support edge; 10b. Surrounding edge; 10c. Exhaust hole. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0025] It should be noted that all directional and positional terms used in this invention, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0026] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] See Figures 1-12 As shown, the present invention provides a modular energy metering box, including a box body 1 and an assembly 2. The assembly 2 is horizontally inserted through the bottom of the box body 1, and one end of the assembly 2 extends out of the box body 1. A retainer 3 is longitudinally slidably arranged inside the box body 1 to close the assembly 2 at one end inside the box body 1, which is used to realize quick plug-in docking between adjacent boxes 1 to form a through-type centralized heat dissipation air duct, replacing the traditional single box independent heat dissipation structure, realizing unified air supply and heat dissipation for multiple metering units, reducing the overall heat dissipation energy consumption of the equipment and the cost of supporting equipment. An air supply device is provided outside the box body 1 to connect the assembly 2. The air supply device includes a wind box 4, which has a fan 401 inside. A box door 5 and a side cover 9 supporting the retainer 3 are provided on the front side of the box body 1 to limit the sliding stroke of the retainer 3, ensuring that the pull rod 302 slides smoothly and does not deviate. The box door 5 is used to close the front opening of the box body 1, and at the same time, in conjunction with the internal air duct structure, realizes the wind control function of automatically cutting off the air when the door is opened. Assembly 2 includes a core tube 201 penetrating the housing 1. A vertical inner hole 201a extends through the top side of the middle section of the core tube 201, serving as an air outlet channel for heat dissipation within the housing 1. This channel guides the cool air transported within the core tube 201 into the piping cavity of the housing 1, achieving heat dissipation and cooling of the components. The core tube 201 has a connector 202 and a fitting head 203 at both ends. Core tubes 201 of adjacent housings 1 are connected via the connector 202 and the fitting head 203. Preferably, the connector 202 has an annular sealing ring on its outer side, and the fitting head 203 has a sealing fit on its inner side. After insertion, a sealed connection is formed, enabling rapid assembly of adjacent modular housings 1. This allows for the connection of multiple housings 1 without on-site drilling modifications, meeting the requirements of power grid sites. To meet the construction requirements of rapid assembly and on-demand expansion, a sleeve 204 is coaxially rotatably installed on the outer side of the core tube 201. The top side of the sleeve 204 has an outer hole 204a corresponding to the inner hole 201a, thus forming an openable and adjustable air duct conduction structure. Through the relative rotation and lateral displacement of the sleeve 204 and the core tube 201, the air duct opening and closing and the ventilation volume can be infinitely adjusted. The retainer 3 includes a pull rod 302 that runs longitudinally through the side cover 9. The rear end of the pull rod 302 is fixed with a baffle 301 that can press against the closed end of the fitting head 203, thereby forming a physical blockage protection for the end of the fitting head 203. At the same time, it works with the plug-in structure to lock the docking position, effectively preventing the plug-in joint from loosening and falling off, and ensuring the sealing and structural stability of the air duct docking.

[0029] As an optional implementation, the plug connector 202 is coaxially provided with a stop groove 202a on its outer side, and the baffle 301 is provided with a limit groove 301a on its edge to form a matching snap-locking structure. This provides a structural basis for the fixed positioning of the adjacent housing 1 after the air duct is plugged in. When the plug connector 202 is plugged in with the sleeve head 203 in the adjacent housing 1, the limit groove 301a on the outer side of the baffle 301 can be longitudinally inserted into the stop groove 202a of the plug connector 202 to keep the connection of the adjacent assembly 2 locked. With this setting, the embedded snap-locking and limiting structure of the limit groove 301a and the stop groove 202a can realize the automatic locking and positioning after the housing 1 is plugged in and assembled. This effectively resists the problem of loosening of the plug caused by outdoor equipment vibration, temperature difference deformation, and external impact, avoids the failure of air duct disconnection and air leakage, and improves the overall structural stability and heat dissipation reliability of the assembled multi-housing-1. A spring 303 is sleeved on the outside of the pull rod 302. The spring 303 pushes the baffle 301 backward to lock the connector 202, providing a continuous elastic clamping force to ensure that the baffle 301 is always in contact with the insertion position, realizing the automatic reset and long-term locking of the locking structure, and avoiding the locking loosening failure after long-term use. A pull ring 302a is provided at one end of the pull rod 302 that protrudes from the side cover 9. The compression stroke of the spring 303 is greater than the outer diameter of the sleeve head 203, ensuring that the forward movement of the baffle 301 to unlock fully meets the insertion and removal space requirements of the connector 202, and there will be no problem of insufficient stroke leading to disassembly and assembly failure. With this setting, the disassembly and assembly logic of one-button unlocking and automatic locking can be realized, which greatly improves the work efficiency of expanding the capacity of the cabinet 1 and disassembling and maintenance. Moreover, the elastic locking structure has a buffering performance, which can be adapted to complex outdoor working conditions, avoid wear and loosening of the rigid structure, and extend the service life of the equipment. A fixed disk 201b is coaxially fixed to the outside of the core tube 201. A movable disk 205 is rotatably mounted on the outside of the fixed disk 201b. A coil spring 205a is provided between the fixed disk 201b and the movable disk 205 to support the automatic reset of the movable disk 205. A constraint rod 207 is fixed to the end face of the sleeve 204, which extends laterally through the movable disk 205. The constraint rod 207 is clearance-fitted with the movable disk 205 to realize the linkage rotation and relative sliding between the movable disk 205 and the sleeve 204. This ensures that the rotational power can be transmitted synchronously and provides a structure for the lateral displacement of subsequent airflow fine-tuning. The movable disc 205 has a winding drum 205b fixed on its outer side. A pull rope 208 is wound around the outside of the winding drum 205b. The outer end of the pull rope 208 passes through the box 1 and is connected to the bottom side of the box door 5. This is used to establish a coordination relationship between the opening action of the box door 5 and the rotation of the internal sleeve 204, so as to realize mechanical transmission control. The air duct can be automatically opened and closed without the need for an electrical control structure. With this setting, the adaptive switching between opening the door to cut off the air and closing the door to ventilate is realized by relying on the mechanical structure. The structure is stable and durable with a low failure rate. It does not require an external power supply and control system and is suitable for long-term use in outdoor scenarios without electrical control. The door 5 is equipped with a pull hole 501 for fixing the pull rope 208. This hole is used to fix the installation position of the pull rope 208, limit the deviation and swaying of the pull rope 208, and ensure smooth and precise force transmission during the opening and closing of the door 5. This effectively prevents the pull rope 208 from falling off, getting stuck, or becoming loose and failing, thus ensuring the operational stability of the mechanical structure. When the door 5 is open, the pull rope 208 pulls the movable disc 205, the constraint rod 207, and the sleeve 204 to rotate, causing the outer hole 204a to rotate to a position offset from the inner hole 201a, sealing the air outlet of the core tube 201. This automatically seals the unit's heat dissipation air duct when the single enclosure 1 is opened for maintenance, preventing air leakage and air escaping from the maintenance opening. This also prevents external dust and moisture from entering the enclosure and corroding electrical components. It can also ensure that the heat dissipation air pressure of the other closed boxes 1 is sufficient and stable, and prevent the overall heat dissipation efficiency from decreasing. The outer side of the sleeve 204 near the movable plate 205 is provided with a rotating groove 204b. A fine adjustment cylinder 206 is rotatably fitted in the rotating groove 204b. The other end of the fine adjustment cylinder 206 is threadedly engaged with the movable plate 205. By using the threaded transmission and rotating sliding structure, the lateral position of the fine adjustment cylinder 206 can be precisely adjusted, providing structural support for the lateral displacement of the sleeve 204 and the adjustment of the air duct conduction area. This setting makes it easy for the staff to finely adjust the air duct ventilation of the corresponding box 1 according to the load heat of the electrical components inside the single box 1, realize the independent air volume control of the unit, adapt to different heat dissipation needs, and take into account the use effect of dust prevention under low load and strong heat dissipation under high load. The housing 1 includes a tail plate 101 and two sets of side plates 102. A bottom plate 103 with a closed side cover 9 is provided on the bottom side of the two sets of side plates 102. A top support 104 and a bottom support 105 are laterally connected between the two sets of side plates 102 to provide lateral support and shape, improve the overall frame strength of the housing 1, prevent deformation and warping under pressure, and ensure accurate alignment of assembly holes and components. A partition 7 is provided on the top side of the bottom support 105, dividing the inner cavity of the housing 1. The assembly consists of an upper electrical cavity and a lower piping cavity. The assembly 2 is located inside the piping cavity. The side plate 102 is provided with a through hole 102a corresponding to the core tube 201, realizing the functional zoning layout of the inner cavity of the enclosure 1. It completely isolates the electrical component installation area from the heat dissipation piping layout area, avoids interference between cables, components and heat dissipation piping, and organizes the internal structure of the enclosure 1. At the same time, the through hole 102a provides precise positioning for the core tube 201 to pass through and assemble, ensuring the alignment accuracy of the air duct insertion of multiple enclosures 1. The bottom side of the tail plate 101 extends forward to form a support plate 101a fixed to the bottom side of the base support 105. Several sets of electrical frames 8 are evenly arranged horizontally inside the electrical cavity. A sliding seat 101b supporting the vertical sliding of the electrical frame 8 is arranged horizontally on the front side of the tail plate 101. Thus, the support plate 101a strengthens the connection between the tail plate 101 and the base support 105, and improves the load-bearing capacity of the bottom of the housing 1. At the same time, the sliding seat 101b provides vertical sliding guidance for the electrical frame 8, realizing the adaptive lifting of the electrical frame 8, and providing the basic conditions for the adaptive opening and closing heat dissipation structure of the component under load. A vertically penetrating sleeve 701 is provided on the top side of the partition 7 corresponding to the electrical frame 8. The electrical frame 8 includes a square tube 801 arranged vertically above the partition 7. The square tube 801 serves as the main support structure of the electrical frame 8 and also acts as an internal air guide channel, integrating support and heat dissipation functions, simplifying the internal structure of the housing 1. The rear end of the square tube 801 is fixed with a vertically sliding sliding seat 101b mounting rail 802. The mounting rail 802 is densely covered with modular holes 802a. The modular holes 802a facilitate the quick installation and fixed wiring of various electrical components, adapting to the assembly requirements of components of different specifications. At the same time, the mounting rail 802 and the sliding seat 101b slide together to ensure smooth vertical lifting of the electrical frame 8 and realize adaptive deformation adjustment. The top side of the square tube 801 has several air distribution holes 801a along its length, which are used to evenly blow out the heat dissipation airflow guided inside the square tube 801, providing targeted and full-coverage heat dissipation for the electrical components installed above, improving the uniformity of heat dissipation. The bottom side of the square tube 801 is connected to an auxiliary tube 803 that penetrates downwards through the sleeve 701. An end cap 804 is provided at the bottom end of the auxiliary tube 803, and an air hole 803a is provided on the outer side of the bottom end of the auxiliary tube 803. The air hole 803a serves as the air inlet of the air duct of the square tube 801, used to introduce the heat dissipation airflow from the lower pipe cavity, achieving through-flow air supply. The auxiliary tube 803 is fitted with a compression spring 805 on the outer side of its top end. The two ends of the compression spring 805 abut against the square tube 801 and the partition plate 7 respectively to support the auxiliary tube 803 upward and support the air hole 803a to be retracted into the sleeve 701 and kept closed. Thus, the compression spring 805 provides elastic support to achieve automatic air-sealing and dust prevention under no-load conditions. When the electrical frame 8 is not under component load, the air hole 803a is retracted into the sleeve 701 and closed to prevent dust and dirt from entering the unloaded position. After the component is installed, the air hole 803a is opened by its own weight, automatically adapting to the heat dissipation requirements of the load and achieving adaptive start-stop heat dissipation. A detachable locking handle 502 is provided on the outside of the box door 5 to lock the box body 1. This handle is used to lock and seal the box door 5 after it is closed, preventing accidental opening during daily use. The detachable structure also facilitates replacement of the handle in case of damage and makes maintenance convenient. The top of the box body 1 is provided with an exhaust hood 10 and a box cover 6, which constitute the exhaust mechanism. Lifting rings 601 are fixed at the four corners of the top of the box cover 6. The lifting rings 601 facilitate the overall lifting and handling of the box body 1 and its on-site installation and positioning, improving the ease of construction. The box cover 6 is fixed to the top side of the exhaust hood 10, and the exhaust hood 10 is connected to the box body 1. The exhaust hood 10 includes a support edge 10a that seals the top opening of the box body 1. The support edge 10a completely seals the top opening of the box body 1. The top opening of the closed box 1 prevents rainwater and debris from falling directly into the box, ensuring the airtightness of the box 1. The inner side of the support 10a extends upward to form the surrounding edge 10b that supports the box cover 6. The four sides of the surrounding edge 10b are densely covered with exhaust holes 10c. The outer edge of the box cover 6 extends downward to below the exhaust holes 10c, and the outer edge of the box cover 6 and the support 10a form an exhaust slit with a height lower than the exhaust holes 10c, thus forming a sunken rainproof and dustproof exhaust structure. This ensures that hot air is discharged normally and effectively blocks outdoor rainwater, dust, and fallen leaves from entering the box 1. It is suitable for complex outdoor working conditions in all weather conditions and greatly improves the safety and durability of the equipment during outdoor operation.

[0030] Using the above structure, during use, a single box 1 serves as a single electricity metering unit. When it is necessary to add metering units according to usage needs, the added box 1 is placed side by side with the installed box 1 on the side away from the air box 4. Then, the retainer 3 is pulled forward, and the baffle 301 is moved forward to expose the core tube 201 and the fitting head 203. At this time, the outer end of the core tube 201 of the added box 1 is inserted into the adjacent box 1 along the through hole 102a, and then the plug 202 of the adjacent core tube 201 is connected to the fitting head 203. Then, the retainer 3 is released, and the baffle 301 is pushed backward by the spring 303 to the limiting groove 301a and locked into the stop groove 202a of the plug 202, thereby locking the insertion position of the core tube 201 of the adjacent box 1 and preventing the plug 202 from being accidentally separated. After adjacent housings 1 are connected by core tube 201, air is supplied through the air box 4 outside the outermost metering unit to supply air for heat dissipation to all metering units in parallel. When it is necessary to adjust the heat dissipation state according to the working state of the electrical components inside different metering units, the fine adjustment cylinder 206 of the internal assembly 2 of the corresponding metering unit housing 1 is rotated. The threaded engagement between the movable disk 205 and the fine adjustment cylinder 206 is used to change the lateral position of the fine adjustment cylinder 206. Since the fine adjustment cylinder 206 and the sleeve 204 are rotated and engaged, the sleeve 204 is laterally slidably engaged with the movable disk 205 through the constraint rod 207. The fine adjustment cylinder 206 is used to laterally pull the sleeve 204 to move, changing the lateral position of the sleeve 204, that is, changing the lateral staggered state of the outer hole 204a and the inner hole 201a. This allows for adjustment of the size of the exhaust channel of the core tube 201 inside a single metering unit to achieve targeted adjustment of the air volume. When opening the housing 1 of a metering unit, pull the door 5 forward to open the housing 1. At the same time, use the pull rope 208 connected in the pull hole 501 to pull the movable disk 205 outside the core tube 201 to rotate. Use the constraint rod 207 passing through the movable disk 205 to drive the sleeve 204 to rotate synchronously. The sleeve 204 and the core tube 201 rotate relative to each other, thereby pulling the outer hole 204a and the inner hole 201a to be staggered to the closed position, so as to seal the heat dissipation and exhaust channel of the metering unit at that location and maintain the normal heat dissipation of the housing 1 in other unopened locations. Electrical components are installed on several sets of electrical racks 8 within the same set of housings 1. The weight of the electrical components presses down on the mounting rails 802 and square tubes 801, thereby moving the air vent 803a of the auxiliary tube 803 at the bottom of the square tube 801 to the position of the release sleeve 701, so as to correspond to the air distribution hole 801a of the square tube 801. According to the installation state of the electrical components on different electrical racks 8, the distribution state of the heat dissipation gas below is automatically adapted, and the compression spring 805 provides buffering and reset support for the entire electrical rack 8. After the electrical components on the mounting rails 802 are removed, the electrical rack 8 is automatically reset and the air vent 803a is sealed, increasing the rationality of the heat dissipation gas distribution.

[0031] By pre-drilling through holes 102a in the side plate 102, the air duct can be connected and connected directly by inserting the end connector 202 and the fitting head 203 of the core tube 201. The newly added metering box 1 does not require on-site drilling or additional heat dissipation pipes and accessories, making the assembly process simple and quick. At the same time, the retainer 3 and the baffle 301 automatically lock the plug position, eliminating the need for additional bolts for tightening and fixing. This avoids damaging the anti-corrosion coating of the box 1 and causing rust and water leakage problems by drilling on-site, while also meeting the construction requirements of rapid assembly and on-demand capacity expansion at the power distribution site.

[0032] Equipped with an automatic air-closing function when the door 5 is opened, it ensures stable heat dissipation for the remaining boxes 1. When a single door 5 is opened, it simultaneously drives the outer hole 204a of the sleeve 204 and the inner hole 201a of the core tube 201 to rotate and close, automatically shutting off the internal heat dissipation air duct of the maintenance box 1. This prevents air leakage from the open maintenance position and avoids the heat dissipation airflow from the maintenance box 1. It ensures that the heat dissipation gas is completely introduced into the remaining closed working boxes 1, ensuring stable heat dissipation air pressure for the remaining metering units. It also prevents heat dissipation diversion and heat dissipation failure, thus improving the overall stability of the equipment.

[0033] The lateral displacement of the sleeve 204 of a single enclosure 1 can be adjusted independently, changing the overlapping conduction area of ​​the inner hole 201a of the core tube 201 and the outer hole 204a of the sleeve 204. It can independently adjust the ventilation and heat dissipation air volume of the single enclosure 1 at different positions according to the real-time heat generation of electrical components such as meters and circuit breakers inside the single enclosure 1. It is specifically designed to increase the heat dissipation air volume for high-load components, reduce the ventilation volume of low-load enclosure 1, and prevent excessive dust from entering the unloaded enclosure 1, balancing heat dissipation efficiency and dust protection, and is suitable for metering units under different working conditions.

[0034] The exhaust hood 10 on the top of the box 1, together with the box cover 6, forms a sunken exhaust slit, which can not only ensure that the hot air inside the box can be discharged smoothly, but also prevent outdoor rainwater, fallen leaves and debris from directly entering the interior of the box 1, thereby improving the overall outdoor rain and dust protection capability of the metering box and making it suitable for long-term use in complex outdoor working conditions in communities and outdoor power distribution points.

[0035] It should be noted that the core technology of this application lies in constructing a centralized heat dissipation path for the modular metering box through pluggable and interconnected air duct components, and realizing automatic air duct cut-off during single-box maintenance through a door linkage air-closing structure. At the same time, it combines an air volume adjustment structure to realize independent heat dissipation control for different metering units. As for the specific size parameters, material parameters, installation position parameters, connection parameters, elasticity parameters, and drive parameters of each component, those skilled in the art can make conventional designs and selections based on the actual use environment, box specifications, and heat dissipation requirements. They are not limited here, and none of them will affect the implementation of the technical solution and the realization of the technical effect of this invention.

[0036] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A modular energy metering box, characterized in that: It includes a housing (1) and an assembly (2), wherein the assembly (2) is laterally inserted through the bottom of the housing (1); The assembly (2) includes a core tube (201) that penetrates the housing (1). The two ends of the core tube (201) are respectively provided with a plug (202) and a fitting head (203). The core tubes (201) of adjacent housings (1) are connected to each other by plugging the plug (202) and fitting head (203). The core tube (201) is provided with an inner hole (201a) that communicates with the inside of the housing (1). A sleeve (204) that can rotate relative to the core tube (201) is sleeved on the outside of the core tube (201). The sleeve (204) is provided with an outer hole (204a) that corresponds to the inner hole (201a). When the sleeve (204) rotates, the outer hole (204a) can be made to communicate with or be offset from the inner hole (201a). The housing (1) is provided with a retainer (3), and the retainer (3) is provided with a baffle (301) for closing the port of the fitting head (203). The baffle (301) can lock the insertion position after the adjacent housings (1) are inserted. The box (1) is provided with an air supply device that communicates with the core tube (201) on the outside; The connector (202) is provided with a stop groove (202a), and the edge of the baffle (301) is provided with a limiting groove (301a) that can be longitudinally inserted into the stop groove (202a) to lock the insertion position of the adjacent core tube (201). The front side of the box (1) is provided with a box door (5) and a side cover (9) of a support frame (3). The support frame (3) includes a pull rod (302) that runs longitudinally through the side cover (9). A spring (303) that pushes the baffle (301) backward is sleeved on the pull rod (302). The compression stroke of the spring (303) is greater than the outer diameter of the fitting head (203). A fixed plate (201b) is fixed on the core tube (201). A movable plate (205) is rotatably arranged on the outside of the fixed plate (201b). The sleeve (204) is in clearance fit with the movable plate (205) through the constraint rod (207). A winding drum (205b) is fixed on the outside of the movable plate (205). A pull rope (208) is wound around the outside of the winding drum (205b). The outer end of the pull rope (208) passes through the box body (1) and is connected to the bottom side of the box door (5).

2. The modular energy metering box according to claim 1, characterized in that: The door (5) is provided with a pull hole (501) for fixing the pull rope (208). When the door (5) is rotated open, the pull rope (208) pulls the movable disc (205), the constraint rod (207), and the sleeve (204) to rotate, rotating the outer hole (204a) to a position offset from the inner hole (201a), thus closing the air outlet of the core tube (201). The sleeve (204) is provided with a rotating groove (204b) on the outer side near the movable disc (205). A fine adjustment cylinder (206) is rotatably fitted in the rotating groove (204b). The other end of the fine adjustment cylinder (206) is threadedly fitted to the movable disc (205) to adjust the initial tension of the pull rope (208).

3. The modular energy metering box according to claim 1, characterized in that: The housing (1) includes a tail plate (101) and two sets of side plates (102). The bottom of the two sets of side plates (102) is provided with a bottom plate (103) with a closed side cover (9). The two sets of side plates (102) are connected laterally by a top support (104) and a bottom support (105). The bottom support (105) is provided with a partition (7) on its top side. The inner cavity of the housing (1) is divided into an upper electrical cavity and a lower pipeline cavity by the partition (7). The assembly (2) is located in the pipeline cavity. The side plate (102) is provided with a through hole (102a) corresponding to the core tube (201).

4. The modular energy metering box according to claim 3, characterized in that: The tail plate (101) extends forward to form a support plate (101a) fixed to the bottom side of the base support (105). Several sets of electrical frames (8) are evenly arranged in the electrical cavity. A sliding seat (101b) supporting the vertical sliding of the electrical frame (8) is arranged in the front side of the tail plate (101).

5. A modular energy metering box according to claim 4, characterized in that: The top side of the partition (7) is provided with a vertically penetrating sleeve (701) corresponding to the electrical frame (8). The electrical frame (8) includes a square tube (801) arranged longitudinally above the partition (7). The rear end of the square tube (801) is fixed with a mounting rail (802) for a vertically sliding sliding seat (101b). The mounting rail (802) is densely covered with modular holes (802a).

6. The modular energy metering box according to claim 5, characterized in that: The square tube (801) has several air holes (801a) on its top side along its length, and the bottom side of the square tube (801) is connected to an auxiliary tube (803) that penetrates downward through the sleeve (701). The bottom end of the auxiliary tube (803) is provided with an end cap (804), and the outer side of the bottom end of the auxiliary tube (803) is provided with an air hole (803a). The outer side of the top end of the auxiliary tube (803) is fitted with a compression spring (805). The two ends of the compression spring (805) abut against the square tube (801) and the partition (7) respectively to support the auxiliary tube (803) upward and support the air hole (803a) to be retracted into the sleeve (701) and kept in a closed state.

7. A modular energy metering box according to claim 1, characterized in that: The outer side of the box door (5) is provided with a locking handle (502) that can be detachably locked to the box body (1). The top of the box body (1) is provided with an exhaust hood (10) and a box cover (6) that form an exhaust mechanism. The box cover (6) is fixed to the top side of the exhaust hood (10) and the exhaust hood (10) is connected to the box body (1). The exhaust hood (10) includes a support edge (10a) that closes the top opening of the box body (1). The inner side of the support edge (10a) extends upward to form a circumference (10b) that supports the box cover (6). The four sides of the circumference (10b) are densely covered with exhaust holes (10c). The outer edge of the box cover (6) extends downward to below the exhaust holes (10c), and an exhaust slit with a height lower than the exhaust holes (10c) is formed between the outer edge of the box cover (6) and the support edge (10a).

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