A new intelligent waterproof electric energy metering box

Abstract

The application discloses a novel intelligent waterproof electric energy metering box, and relates to the technical field of metering boxes, in particular to a novel intelligent waterproof electric energy metering box, which comprises a metering box and a plurality of air inlets arranged on the left and right sides of the metering box, waterproof covers are fixedly connected to the bottom of the inner side surfaces of the left and right sides of the metering box and can completely cover the plurality of air inlets, the waterproof covers, the blocking cloth, the water absorption component, the heat exchange fan and the third communication port are cooperatively arranged, the weight increase of the water absorption component after water absorption can be utilized to drive the blocking cloth to be unfolded during rainfall, the airflow channel between the air inlet and the first communication port is effectively closed, reliable waterproofing is realized, and after the rainfall stops, negative pressure is formed on one side of the blocking cloth through the suction of the heat exchange fan, the blocking cloth is forced to be recessed and to pull and lift the water absorption component, and at the same time, external air is guided to enter the third communication port and to forcibly flush the surface of the water absorption component, so that the drying rate of the water absorption component is greatly increased.

Description

Technical Field

[0001] This invention relates to the field of metering box technology, and more specifically, to a novel intelligent waterproof energy metering box. Background Technology

[0002] Electricity metering boxes are widely used end-point metering devices in power supply and consumption management systems. They are mainly used to accurately measure and monitor electricity consumption in real time. A typical electricity metering box consists of a box containing various electrical components such as circuit breakers, terminals, and electricity meters. These components work together to realize basic functions such as electricity access, distribution, and metering. During normal operation, electrical components inevitably generate heat. This heat mainly comes from the Joule heating effect generated when current passes through a conductor, as well as the hysteresis and eddy current losses in magnetic components. As heat continues to accumulate, the internal temperature of the box will gradually rise. If heat cannot be effectively dissipated, high temperature will not only affect the accuracy of the metering device, but may also accelerate the aging of insulation materials, and even cause protection malfunctions or component damage. To maintain a suitable operating temperature inside the box, multiple ventilation holes are usually provided on the side walls of the box. However, a large number of electricity metering boxes need to be installed in outdoor environments, which exposes them to severe weather such as rainstorms. In the event of wind and rain, rainwater can easily enter the box through the ventilation holes when carried by the wind or flowing along the box wall. Once water enters, water may accumulate inside the box, which can reduce electrical clearance and creepage distance, decrease insulation strength, and lead to problems such as partial discharge, short circuit or corrosion of metal components. In severe cases, it can cause abnormal electrical components and make the metering box completely lose its function. To address this practical problem, some improved solutions have emerged on the market aimed at preventing rainwater from entering through the ventilation holes. For example, a power metering box disclosed in patent application number 202311545563.4 uses absorbent strips made of absorbent material inside the box wall, which are linked to a waterproof cloth. When rainwater enters the preset channel and is absorbed by the absorbent strips, the strips become displaced due to the increased weight from absorbing water, which in turn pulls the waterproof cloth to move and cover the ventilation holes, thus physically blocking the path for rainwater to continue entering the box. From the perspective of blocking liquid water, this design has a positive aspect. However, while achieving waterproofing, this technical solution also raises a significant heat dissipation problem, with its shortcomings mainly manifested in the following two aspects. Firstly, the difficulty in resetting the absorbent strip leads to prolonged closure of the heat dissipation holes. When the absorbent strip has absorbed enough rainwater and moved to its maximum travel position, the space it occupies is actually a relatively closed and narrow chamber. In this chamber, air can hardly exchange effectively with the outside, resulting in extremely poor ventilation. The moisture contained in the absorbent strip can only dissipate by relying on the natural evaporation and diffusion of water molecules in still air. The speed of evaporation largely depends on the difference between the partial pressure of water vapor on the surface of the absorbent material and the partial pressure of water vapor in the surrounding air. In a closed and narrow space, the evaporated water vapor is difficult to remove, and the relative humidity in the chamber will soon approach saturation. The water vapor pressure difference becomes extremely small, and the driving force required for evaporation almost disappears. Therefore, the drying speed of the absorbent strip is extremely slow. Even if the rain has long since stopped and the external atmospheric humidity has significantly decreased, the absorbent strip remains damp for a long time. The waterproof cloth continues to block the heat dissipation holes, causing the heat dissipation holes to be closed for a long time after the rain. The natural convection heat dissipation path of the cabinet is cut off, and the heat generated by the internal electrical components cannot be dissipated smoothly, which will significantly aggravate the temperature rise and affect the safe operation of the equipment. Secondly, the thickening of the box wall weakens the heat conduction and dissipation capacity of the box itself. This solution integrates the water absorption strip and transmission mechanism into the box wall interlayer, which inevitably increases the thickness of the box wall significantly. It should be clear that the box wall is not only a structural support component, but also an important heat dissipation channel. According to the basic principles of heat transfer, when there is a temperature difference, heat will spontaneously conduct from the high-temperature side to the low-temperature side through the solid wall. For a flat wall like the box, its heat conduction capacity is directly proportional to the temperature difference between the two sides of the wall and inversely proportional to the thickness of the wall. When the box wall is significantly thickened due to the addition of internal mechanisms, the path that heat must travel from the inside of the box to the outside surface becomes longer, and the thermal resistance increases significantly. This means that even if the heat dissipation holes are not sealed and internal convection is normal, the heat dissipated to the outside through the thickened box wall will be greatly reduced. In other words, even if the waterproof cloth is eventually reinstalled, the heat loss caused by the thickened box wall is continuous and irreversible. The equivalent heat dissipation capacity of the entire metering box is permanently reduced compared to the traditional thin-walled structure. In summary, while the existing technology has solved the problem of rainwater intrusion to some extent, it severely damages the heat dissipation performance of the electricity metering box by extending the sealing time of the heat dissipation holes and increasing the thermal resistance of the box wall. In areas with frequent rainfall or high temperature and humidity, such a design is prone to continuous high temperature due to poor internal heat dissipation, which in turn affects the accuracy of metering and the life of the equipment. Therefore, the long-term reliability and convenience of this solution in practical engineering applications are still significantly insufficient and deserve further optimization and improvement. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a novel intelligent waterproof energy metering box, which solves the problems mentioned in the background section.

[0004] The technical solution of this invention is as follows: To achieve the above objectives, the present invention is implemented through the following technical solution: a novel intelligent waterproof energy metering box, comprising a metering box and multiple air inlets opened on the left and right sides of the metering box, wherein a waterproof cover capable of completely covering the multiple air inlets is fixedly connected to the bottom of the left and right inner sides of the metering box, and multiple first communication ports are opened on the side of the waterproof cover away from the inner side of the metering box, a blocking cloth capable of separating its internal space is provided inside the waterproof cover, and a water-absorbing component is fixedly connected to the free end of the blocking cloth, and a heat exchange fan capable of causing the middle of the blocking cloth to form a recess is fixedly installed on the opposite sides of the two waterproof covers, and a third communication port capable of communicating with the bottom of the internal space of the waterproof cover is opened on the outer side of the metering box.

[0005] Preferably, a second partition plate is fixedly connected to the upper part of the inner wall of the waterproof cover, and a first partition plate is fixedly connected to both the front and rear parts of the upper surface of the second partition plate. A rotating take-up roller is set at the center of the two first partition plates. The end of the blocking cloth away from the water-absorbing component passes through the second partition plate and is fixedly connected to the take-up roller. A plurality of connecting pipes with one end fixedly connected to the top surface of the metering box are fixedly connected to the upper surface of the waterproof cover.

[0006] Preferably, the front and rear ends of the take-up roller are respectively penetrated by the corresponding first partition plate, and the front and rear ends of the take-up roller are fixedly sleeved with a spiral spring. The outer end of the spiral spring is fixedly connected to the waterproof cover. The front and rear ends of the take-up roller are fixedly connected with a take-up baffle that is attached to the end face of the barrier cloth on one side.

[0007] Preferably, the water-absorbing component includes a water-absorbing block fixedly connected to the free end of the barrier cloth, and a water-absorbing bucket is fixedly sleeved on the outer surface of the water-absorbing block.

[0008] Preferably, the absorbent block is made of superabsorbent resin, and the absorbent bucket is made of rigid absorbent foam.

[0009] Preferably, the waterproof cover has limiting slides on both the front and rear inner sides, and the front and rear ends of the water-absorbing bucket are slidably connected in the corresponding limiting slides.

[0010] Preferably, the blocking cloth includes an outer water-blocking cloth and an inner water-blocking cloth, both of which are fixedly connected to the take-up roller at one end. The front and rear ends of the inner water-blocking cloth are fixedly connected to the inner side of the outer water-blocking cloth, and there is a flow gap between the outer water-blocking cloth and the inner water-blocking cloth. The free ends of the outer water-blocking cloth and the inner water-blocking cloth are fixedly connected to the water-absorbing block.

[0011] Preferably, the outer waterproof fabric is made of non-breathable and inelastic waterproof material, while the inner waterproof fabric is made of breathable and highly elastic material.

[0012] Preferably, the water-absorbing block has a connecting groove that communicates with the flow gap, and multiple first divergence ports are provided on both the left and right sides of the connecting groove, and multiple second divergence ports corresponding one-to-one with the multiple first divergence ports are provided on the outer side of the water-absorbing bucket.

[0013] Preferably, the outer water-blocking cloth has multiple second communication ports that communicate with the flow gap on the side away from the inner water-blocking cloth. Beneficial effects

[0014] This invention provides a novel intelligent waterproof power metering box, which has the following beneficial effects: 1. This novel intelligent waterproof energy metering box, through the coordinated arrangement of a waterproof cover, a barrier cloth, a water-absorbing component, a heat exchange fan, and a third connecting port, can utilize the increased weight of the water-absorbing component after absorbing water during rainfall to drive the barrier cloth to unfold, effectively sealing the airflow channel between the air inlet and the first connecting port, thus achieving reliable waterproofing. After the rainfall stops, the suction effect of the heat exchange fan can create negative pressure on one side of the barrier cloth, forcing it to indent and lift the water-absorbing component. At the same time, it guides outside air to enter through the third connecting port and forcibly flushes the surface of the water-absorbing component, thereby significantly accelerating the drying rate of the water-absorbing component and allowing the barrier cloth to reset in time, restoring the normal ventilation and heat dissipation path of the metering box. This solves the contradiction of waterproofing and heat dissipation that is difficult to balance in the existing technology.

[0015] 2. This new type of intelligent waterproof energy metering box, by setting the waterproof cover inside the metering box rather than embedding it in the box wall, does not require an increase in the thickness of the box wall, thus maintaining the original heat conduction and heat dissipation capacity of the box wall without weakening it, and ensuring the thermal balance and long-term operational reliability of the metering box under various working conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the metering box of the present invention; Figure 2 This is a frontal cross-sectional structural diagram of the metering box of the present invention; Figure 3 This is a partially enlarged structural schematic diagram of the front cross-section of the metering box of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A; Figure 5 This is a partial cross-sectional view of the waterproof cover of the present invention from the right side. Figure 6 This is a schematic diagram of the spiral spring of the present invention; Figure 7 This is a schematic diagram of the combined structure of the outer water-blocking cloth, inner water-blocking cloth, water-absorbing block, and water-absorbing bucket of the present invention.

[0017] In the diagram: 1. Metering box; 2. Air inlet; 3. Waterproof cover; 4. Connecting pipe; 5. Take-up roller; 6. Outer water-blocking cloth; 7. Take-up baffle; 8. Limiting slide; 9. First connecting port; 10. Inner water-blocking cloth; 11. Second connecting port; 12. Water-absorbing block; 13. Water-absorbing bucket; 14. Third connecting port; 15. First diverging port; 16. Second diverging port; 17. Scroll spring; 18. First partition plate; 19. Second partition plate; 20. Heat exchange fan. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. Example

[0019] While achieving waterproofing, existing technologies also raise significant heat dissipation issues, with their shortcomings mainly manifested in the following two aspects; Firstly, the difficulty in resetting the absorbent strip leads to prolonged closure of the heat dissipation holes. When the absorbent strip has absorbed enough rainwater and moved to its maximum travel position, the space it occupies is actually a relatively closed and narrow chamber. In this chamber, air can hardly exchange effectively with the outside, resulting in extremely poor ventilation. The moisture contained in the absorbent strip can only dissipate by relying on the natural evaporation and diffusion of water molecules in still air. The speed of evaporation largely depends on the difference between the partial pressure of water vapor on the surface of the absorbent material and the partial pressure of water vapor in the surrounding air. In a closed and narrow space, the evaporated water vapor is difficult to remove, and the relative humidity in the chamber will soon approach saturation. The water vapor pressure difference becomes extremely small, and the driving force required for evaporation almost disappears. Therefore, the drying speed of the absorbent strip is extremely slow. Even if the rain has long since stopped and the external atmospheric humidity has significantly decreased, the absorbent strip remains damp for a long time. The waterproof cloth continues to block the heat dissipation holes, causing the heat dissipation holes to be closed for a long time after the rain. The natural convection heat dissipation path of the cabinet is cut off, and the heat generated by the internal electrical components cannot be dissipated smoothly, which will significantly aggravate the temperature rise and affect the safe operation of the equipment. Secondly, the thickened box wall weakens the box's own heat conduction and dissipation capacity. This solution integrates the water absorption strip and transmission mechanism into the box wall interlayer, inevitably increasing the box wall thickness significantly. It should be clear that the box wall is not only a structural support but also an important heat dissipation channel. According to the basic principles of heat transfer, in the presence of a temperature difference, heat will spontaneously conduct from the high-temperature side to the low-temperature side through the solid wall. For a flat wall like the box, its heat conduction capacity is directly proportional to the temperature difference between the two sides of the wall and inversely proportional to the wall thickness. When the box wall is significantly thickened due to the addition of internal mechanisms, the path that heat must travel from the inside of the box to the outside surface becomes longer, and the thermal resistance increases significantly. This means that even if the heat dissipation holes are not sealed and internal convection is normal, the heat dissipated to the outside through the thickened box wall will be greatly reduced. In other words, even if the waterproof cloth is eventually reinstalled, the heat loss caused by the thickened box wall is continuous and irreversible. The equivalent heat dissipation capacity of the entire metering box is permanently reduced compared to the traditional thin-walled structure. This embodiment was invented to solve the above problems.

[0020] Please see Figures 1 to 7 This invention provides a technical solution: a novel intelligent waterproof energy metering box, comprising a metering box 1 and multiple air inlets 2 opened on the left and right sides of the metering box 1. The bottom of the inner sides of the metering box 1 are fixedly connected to waterproof covers 3 that can completely cover the multiple air inlets 2. The waterproof covers 3 have multiple first connecting ports 9 on the side away from the inner side of the metering box 1. The waterproof covers 3 are provided with a barrier cloth that can separate its internal space. The free end of the barrier cloth is fixedly connected to a water-absorbing component. The opposite sides of the two waterproof covers 3 are fixedly installed with heat exchange fans 20 that can cause the middle of the barrier cloth to form a depression. The outer side of the metering box 1 has a third connecting port 14 that can communicate with the bottom of the internal space of the waterproof covers 3. At the same time, thanks to the structural design of the waterproof covers 3 being built into the metering box 1 rather than embedded in the box wall, the wall thickness of the metering box 1 can be maintained at the same size as the conventional solution. Therefore, the ability of the metering box 1 to conduct heat to the external environment through the wall is not weakened at all, and it can perform its heat dissipation function normally, ensuring the thermal balance and equipment safety of the metering box 1 in daily operation. A second partition plate 19 is fixedly connected to the upper part of the inner wall of the waterproof cover 3. The end of the second partition plate 19 near the inner wall of the metering box 1 is fixedly connected to the metering box 1. The front and rear parts of the upper surface of the second partition plate 19 are both fixedly connected to the first partition plate 18, and the end of the first partition plate 18 near the inner wall of the metering box 1 is also fixedly connected to the metering box 1. Therefore, by setting the second partition plate 19, the internal space of the waterproof cover 3 can be divided into an upper space and a lower space. At the same time, the upper space is further divided into three areas: a front space, a middle space, and a rear space by using the two first partition plates 18. A rotating take-up roller 5 is set at the center of the two first partition plates 18. The end of the blocking cloth away from the water absorption component passes through the second partition plate 19 and is fixedly connected to the take-up roller 5. The blocking cloth and the second partition plate 19 are slidably connected, and there is a gap between them. Multiple connecting pipes 4 with one end fixedly connected to the top surface of the metering box 1 are fixedly connected to the upper surface of the waterproof cover 3. The upper surface of the waterproof cover 3 has a second water inlet at the position corresponding to the connecting pipe 4, and the upper surface of the metering box 1 has a first water inlet at the position corresponding to the connecting pipe 4. During rainfall, rainwater first flows into the first water inlet under the action of gravity, then flows down along the connecting pipe 4, and then enters the central space of the waterproof cover 3, which is enclosed by two first partition plates 18, through the second water inlet. The rainwater entering the central space immediately comes into contact with the barrier cloth and achieves water distribution through the preset gap between the barrier cloth and the second partition plate 19. Since the barrier cloth itself has a certain hydrophilicity and capillary wetting effect, the water can be quickly absorbed and spread at the gap, and continuously and evenly seep downward along the fiber texture and surface of the barrier cloth under the dominance of gravity. It can continuously and stably deliver sufficient water to the water absorption component located at the bottom of the waterproof cover 3, ensuring that it is fully wetted and produces the expected driving response. The front and rear ends of the take-up roller 5 are respectively penetrated by the corresponding first partition plate 18, and the front and rear ends of the take-up roller 5 are fixedly sleeved with a spiral spring 17. The outer end of the spiral spring 17 is fixedly connected to the waterproof cover 3. The front and rear ends of the take-up roller 5 are fixedly connected with a take-up baffle 7 with one side attached to the end face of the baffle cloth. Therefore, when the weight of the water-absorbing component increases significantly due to the continuous absorption of rainwater seeping down the surface of the barrier cloth, the gravitational force acting on it also increases. When the gravity gradually exceeds the restoring force provided by the spiral spring 17 on the take-up roller 5 and the internal frictional resistance of the system, the water-absorbing component will be displaced in the vertical direction. With the help of the free end of the barrier cloth that is fixedly connected to it, the tension is directly transmitted to the barrier cloth. The barrier cloth is then pulled out from the rolled-up state, thus forming an effective physical barrier between the air inlet 2 and the first connecting port 9. At this time, even if a rainstorm is accompanied by strong winds, causing rainwater to splash or drift into the waterproof cover 3 through the air inlet 2, it will be effectively intercepted by the unfolded barrier cloth and guided along the cloth surface to the lower space. It cannot pass through the barrier cloth to reach the first connecting port 9, thus reliably preventing rainwater from entering the metering box 1 and protecting the operational safety of electrical components. The water-absorbing component includes a water-absorbing block 12 fixedly connected to the free end of the barrier cloth, and a water-absorbing bucket 13 is fixedly fitted on the outer surface of the water-absorbing block 12. The water-absorbing block 12 is made of super absorbent resin, and the water-absorbing bucket 13 is made of rigid absorbent foam. Limiting slides 8 are opened on both the front and rear inner sides of the waterproof cover 3. The front and rear ends of the water-absorbing bucket 13 are slidably connected in the corresponding limiting slides 8. The width of the blocking cloth is the same as the width of the water-absorbing bucket 13. The front and rear sides of the blocking cloth are respectively attached to the inner side of the corresponding limiting slide 8, thus forming an effective lateral seal to ensure that airflow cannot bypass a large amount between the blocking cloth and the cover wall. When the heat exchange fan 20 is running, it continuously draws air from the lower space of the waterproof cover 3 from the first connecting port 9. Since the blocking cloth and the water-absorbing component together form the main barrier to block the airflow, the air in the inner cavity of the blocking cloth facing the first connecting port 9 is quickly drawn away, the pressure continues to drop, and a stable negative pressure area is formed. Driven by differential pressure, under the significant pressure difference between the external atmospheric pressure and the negative pressure zone, the flexible barrier cloth is forced to deform inward toward the first connecting port 9. This deformation shortens the effective vertical unfolding length of the barrier cloth, thereby applying an upward lifting force to the absorbent component through its bottom end. This causes the absorbent bucket 13, together with the absorbent block 12, to move upward along the limiting slide 8 (at this time, the bottom end of the absorbent bucket 13 will detach from the inner bottom surface of the waterproof cover 3). During this process, under the push of atmospheric pressure, a portion of the outside air is drawn into the waterproof cover 3 through the third connecting port 14. When the absorbent component is raised, its bottom end forms a flow gap with the bottom surface of the waterproof cover. Most of the incoming airflow first directly washes the outer surface of the absorbent component, then enters the space defined by the barrier cloth near the first connecting port 9 through the bottom flow gap. This creates a continuously renewing forced convection environment around the absorbent component. Based on the theory of enhanced convection mass transfer, the continuously flowing air can quickly remove the water vapor that has evaporated from the surface of the absorbent material, keeping the water vapor partial pressure in the boundary layer at a low level. This establishes a persistent and efficient driving force for moisture evaporation on the surface of the absorbent component. This significantly accelerates the drying rate. Afterward, this part of the air continues to move into the metering box 1, flows through the electrical components and absorbs the heat generated by their operation, and finally is smoothly discharged from the air outlet opened at the top of the metering box 1. This achieves uninterrupted auxiliary ventilation and heat dissipation. At the same time, after the middle of the barrier cloth is recessed into the waterproof cover 3, there will inevitably be gaps between its edge and the inner side of the waterproof cover 3, allowing a small amount of air to seep in directly. However, this part of the bypass air intake is extremely small and is not enough to offset the suction effect at the first connecting port 9. Therefore, it will not affect the effective establishment and maintenance of the negative pressure required for the lower space. Meanwhile, excess rainwater entering the waterproof cover 3 can be discharged to the outside of the metering box 1 through the third connecting port 14. Example

[0021] In the above embodiments, although the lifting force applied to the absorbent component when the middle of the barrier fabric is concave can cause the absorbent block 12 and the absorbent bucket 13 to move upward synchronously, thereby allowing the air entering through the third connecting port 14 to effectively scour the outer surface of the absorbent bucket 13 and remove its surface moisture during the flow process, this drying mechanism mainly acts on the exposed surface of the absorbent component. The internal moisture migration process is still significantly restricted. Specifically, the absorbent bucket 13 made of rigid absorbent foam and the absorbent block 12 formed by the internal superabsorbent resin are both porous media. Their drying process follows the basic principle of from the surface to the inside: surface moisture can evaporate relatively quickly under forced convection, while internal moisture needs to migrate to the surface through capillary action, or be removed by water. The vapor diffuses outward along the pore channels. When the internal diffusion and capillary replenishment rates are lower than the surface evaporation rate, the drying process enters a slowdown phase, and the overall dehumidification efficiency decreases significantly. Therefore, relying solely on the airflow scouring the outer surface of the water-absorbing bucket 13 is insufficient to quickly remove the large amount of moisture stored in the pores inside the water-absorbing bucket 13 and deep within the water-absorbing block 12. This results in the overall moisture content of the water-absorbing component remaining high for a considerable period of time. Consequently, the restoring force of the spiral spring 17 is unable to overcome the weight of the water-absorbing component and the system resistance for an extended period. The blocking cloth remains in an unfolded state for a long time, and the airflow channel between the air inlet 2 and the first connecting port 9 is difficult to fully recover, thus affecting the normal heat dissipation and ease of use of the equipment. This embodiment is invented to solve the above problems.

[0022] Please see Figures 1 to 7 Based on the above embodiments, the technical solution adopted includes an outer water-blocking cloth 6 and an inner water-blocking cloth 10, both of which are fixedly connected to the take-up roller 5 at one end. The front and rear ends of the inner water-blocking cloth 10 are fixedly connected to the inner side of the outer water-blocking cloth 6, and there is a flow gap between the outer water-blocking cloth 6 and the inner water-blocking cloth 10. The free ends of the outer water-blocking cloth 6 and the inner water-blocking cloth 10 are fixedly connected to the water-absorbing block 12. The outer water-blocking cloth 6 is made of non-breathable and non-elastic waterproof fabric, while the inner water-blocking cloth 10 is made of breathable and highly elastic fabric. The water-absorbing block 12 has a connecting groove that communicates with the flow gap. Multiple first divergence ports 15 are provided on both the left and right sides of the connecting groove, and multiple second divergence ports 16 are provided on the outer side of the water-absorbing bucket 13 that correspond one-to-one with the multiple first divergence ports 15. The outer water-blocking cloth 6 has multiple second communication ports 11 that communicate with the flow gap on the side away from the inner water-blocking cloth 10; Therefore, when the middle of the baffle cloth is concave towards the first connecting port 9 under negative pressure, outside air can enter the flow space formed by the flow gap between the outer baffle cloth 6 and the inner baffle cloth 10 through the second connecting ports 11 provided on the outer baffle cloth 6. Although the inner baffle cloth 10 itself has a certain degree of air permeability, its air permeability is far from sufficient to balance the continuous suction at the first connecting port 9. Therefore, the negative pressure cannot be eliminated by the air permeability. Under this continuous pressure difference, the inner baffle cloth 10, which has a certain degree of elasticity, will undergo more significant elastic deformation, further conforming to the concave trend and maintaining the openness of the flow gap. During this process, the outer baffle cloth 6 and the inner baffle cloth 10 synchronously pull the water-absorbing block 12 and the water-absorbing bucket 13 upward. At the same time, the airflow entering the flow gap continues to flow into the connecting groove opened in the water-absorbing block 12 under the drive of the pressure difference, and then passes through each of the first divergence ports 15 and the corresponding second divergence ports 16 in sequence. Finally, the air is released into the lower space of the inner water-blocking cloth 10 near the first connecting port 9. Because the air permeability of the inner water-blocking cloth 10 is limited to a certain range, while the suction capacity of the heat exchange fan 20 continues, some air is forced to be drawn out along the path of flow gap, connecting groove, first divergence port 15 and second divergence port 16. This forms a through-flow micro airflow inside the water-absorbing component. According to the theory of convective mass transfer enhancement, this airflow that penetrates the porous medium can effectively carry away the water vapor evaporated in the deep layer of the water-absorbing block 12 and the pores of the water-absorbing bucket 13, maintain the water vapor partial pressure in the internal micro-channels at a low level, and establish a driving force for water evaporation from the inside out. At the same time, the outside air is still rinsing the outer surface of the water-absorbing bucket 13, forming external forced convection drying. Through this dual drying mechanism of internal penetrating airflow and external surface rinsing airflow, the overall moisture dissipation rate of the water-absorbing component is greatly enhanced, and the drying time is significantly shortened. Furthermore, thanks to the second connecting port 11, the flow gap, and the connecting groove, rainwater can quickly soak and penetrate into the interior of the water-absorbing block 12 and the water-absorbing bucket 13 along these channels when it rains. This significantly increases the contact area between the rainwater and the superabsorbent resin, accelerating the water absorption and weight gain process of the water-absorbing component. As a result, the blocking cloth can be driven to unfold and close the passage between the air inlet 2 and the first connecting port 9 more quickly in the early stage of rain. After the water in the water-absorbing component gradually evaporates and the weight is reduced to below the critical value, the reset torsional torque accumulated by the spiral spring 17 will overcome the system resistance and drive the winding roller 5 to rotate in the opposite direction, rewinding the outer water-blocking cloth 6 and the inner water-blocking cloth 10 and restoring the smooth flow of air.

[0023] In summary, when this new type of intelligent waterproof electricity metering box is in use, rainwater flows sequentially through the first water inlet at the top of the metering box 1, the connecting pipe 4, and the second water inlet on the waterproof cover 3, and collects in the central space enclosed by the first partition plate 18. It then flows downward along the gap between the outer water-blocking cloth 6 and the inner water-blocking cloth 10 and the second partition plate 19. At the same time, some rainwater enters the flow gap through the second connecting port 11 on the outer water-blocking cloth 6, and then quickly permeates and wets the water-absorbing block 12 and the water-absorbing bucket 13 through the connecting groove, causing the water-absorbing components to quickly increase in weight. When the weight exceeds the reset force of the spiral spring 17, the water-absorbing bucket 13 moves downward along the limiting slide 8, causing the blocking cloth to unfold and sealing the airflow channel between the air inlet 2 and the first connecting port 9, thereby effectively preventing rainwater from splashing or drifting into the metering box 1. When the temperature inside the metering box 1 reaches the set threshold (the metering box 1 is equipped with a temperature sensor and controller), the heat exchange fan 20 starts and continuously draws air through the first connecting port 9, causing the air in the inner cavity of the blocking cloth facing the first connecting port 9 to be quickly drawn away. Under the action of pressure difference, the middle of the outer water-blocking cloth 6 and the inner water-blocking cloth 10 is concave towards the first connecting port 9, and the bottom end is pulled upward to lift the water-absorbing bucket 13 and the water-absorbing block 12, so that the bottom end of the water-absorbing bucket 13 is separated from the inner bottom surface of the waterproof cover 3. At this time, under the push of atmospheric pressure, part of the outside air enters the waterproof cover 3 through the third connecting port 14 and washes the outer surface of the water-absorbing bucket 13, while the other part passes through the second connecting port 11, flow gap, connecting groove, first divergence port 15 and second divergence port 16 on the outer water-blocking cloth 6 to form a micro-airflow that penetrates the inside of the water-absorbing component. This dual forced convection drying mechanism that combines external scouring and internal penetration can quickly remove the water vapor in the deep layer of the water-absorbing block 12 and the pores of the water-absorbing bucket 13, greatly accelerating the drying rate. Once the weight of the water-absorbing component drops below the critical value, the reset torsional torque accumulated by the spiral spring 17 drives the take-up roller 5 to rotate. Guided by the take-up baffle 7, the outer water-blocking cloth 6 and the inner water-blocking cloth 10 are re-wound, and the air inlet 2 and the first connecting port 9 are restored to unobstructed flow. The metering box 1 re-establishes a natural convection heat dissipation path from the air inlet 2, the first connecting port 9 to the top air outlet. At the same time, because the waterproof cover 3 is an internal structure, the wall thickness of the box remains unchanged, and the heat conduction and heat dissipation capacity of the box wall is not weakened in any way, ensuring the thermal balance and long-term operational reliability of the metering box 1 under various working conditions.

[0024] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Furthermore, it should be noted that, 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A novel intelligent waterproof energy metering box, comprising a metering box (1) and multiple air inlets (2) opened on the left and right sides of the metering box (1), characterized in that: The bottom of the left and right inner sides of the metering box (1) is fixedly connected to a waterproof cover (3) that can completely cover multiple air inlets (2). The waterproof cover (3) has multiple first communication ports (9) on the side away from the inner side of the metering box (1). The waterproof cover (3) is provided with a barrier cloth that can separate its internal space. The free end of the barrier cloth is fixedly connected to a water-absorbing component. The opposite sides of the two waterproof covers (3) are fixedly installed with heat exchange fans (20) that can cause the middle of the barrier cloth to form a depression. The outer side of the metering box (1) is provided with a third communication port (14) that can communicate with the bottom of the internal space of the waterproof cover (3).

2. The novel intelligent waterproof power metering box according to claim 1, characterized in that: The upper part of the inner wall of the waterproof cover (3) is fixedly connected to a second partition plate (19). The front and rear parts of the upper surface of the second partition plate (19) are fixedly connected to a first partition plate (18). A rotating take-up roller (5) is set at the center of the two first partition plates (18). The end of the barrier cloth away from the water absorption component passes through the second partition plate (19) and is fixedly connected to the take-up roller (5). The upper surface of the waterproof cover (3) is fixedly connected to a plurality of connecting pipes (4) with one end fixedly connected to the top surface of the metering box (1).

3. A novel intelligent waterproof power metering box according to claim 2, characterized in that: The front and rear ends of the take-up roller (5) are respectively penetrated by the corresponding first partition plate (18), and the front and rear ends of the take-up roller (5) are fixedly sleeved with a spiral spring (17). The outer end of the spiral spring (17) is fixedly connected to the waterproof cover (3). The front and rear ends of the take-up roller (5) are fixedly connected with a take-up baffle (7) that is attached to the end face of the blocking cloth on one side.

4. A novel intelligent waterproof power metering box according to claim 3, characterized in that: The water-absorbing component includes a water-absorbing block (12) fixedly connected to the free end of the barrier cloth, and a water-absorbing bucket (13) is fixedly sleeved on the outer surface of the water-absorbing block (12).

5. A novel intelligent waterproof power metering box according to claim 4, characterized in that: The absorbent block (12) is made of super absorbent resin, and the absorbent bucket (13) is made of rigid absorbent foam.

6. A novel intelligent waterproof power metering box according to claim 5, characterized in that: The waterproof cover (3) has limit slides (8) on both the front and rear inner sides, and the front and rear ends of the water-absorbing bucket (13) are slidably connected in the corresponding limit slides (8).

7. A novel intelligent waterproof power metering box according to claim 6, characterized in that: The blocking cloth includes an outer water-blocking cloth (6) and an inner water-blocking cloth (10) both fixedly connected to the take-up roller (5) at one end. The front and rear ends of the inner water-blocking cloth (10) are both fixedly connected to the inner side of the outer water-blocking cloth (6), and there is a flow gap between the outer water-blocking cloth (6) and the inner water-blocking cloth (10). The free ends of the outer water-blocking cloth (6) and the inner water-blocking cloth (10) are both fixedly connected to the water-absorbing block (12).

8. A novel intelligent waterproof power metering box according to claim 7, characterized in that: The outer waterproof fabric (6) is made of non-breathable and non-elastic waterproof fabric, while the inner waterproof fabric (10) is made of breathable and elastic fabric.

9. A novel intelligent waterproof power metering box according to claim 8, characterized in that: The water-absorbing block (12) has a connecting groove that communicates with the flow gap. Multiple first divergence ports (15) are provided on both the left and right sides of the connecting groove. The outer side of the water-absorbing bucket (13) has multiple second divergence ports (16) that correspond one-to-one with the multiple first divergence ports (15).

10. A novel intelligent waterproof power metering box according to claim 9, characterized in that: The outer water-blocking cloth (6) has multiple second communication ports (11) on the side away from the inner water-blocking cloth (10) that communicate with the flow gap.

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