Primary and secondary fusion ring network box

By combining evaporative cooling and forced cooling devices in the ring main unit, and utilizing water-absorbing sponges to evaporate condensate and fans to control ventilation, the problem of low heat dissipation efficiency of the ring main unit is solved, achieving efficient temperature control and stable operation.

CN120855122BActive Publication Date: 2026-07-03MINDIAN ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
MINDIAN ELECTRIC CO LTD
Filing Date
2025-07-21
Publication Date
2026-07-03

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    Figure CN120855122B_ABST
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Abstract

The application relates to a primary and secondary fusion ring net box, and relates to the technical field of ring net boxes, which comprises a box body and a box door, and further comprises an evaporation heat dissipation device and a forced heat dissipation device. The evaporation heat dissipation device collects rainwater by using a water storage tank, the rainwater is filtered through a filter screen, enters a water absorption sponge in a heat dissipation interlayer through a water inlet, and is discharged through a heat dissipation hole after being evaporated by heat. The fan of the forced heat dissipation device blows air into the ring net box from an air inlet, and discharges the air from an air outlet. A first telescopic motor controls a ventilation plate to adjust the air volume, and a temperature sensor controls the start of the equipment. The application can effectively dissipate heat of the ring net box, can save energy by using rainwater, and can automatically control and adjust the heat dissipation.
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Description

Technical Field

[0001] This invention relates to the field of ring main units, and more particularly to a primary and secondary integrated ring main unit. Background Technology

[0002] As a key piece of equipment in power distribution networks, the integrated primary and secondary ring main units (RMS) need to operate outdoors for extended periods. With the continuous development and upgrading of power systems, RMS plays an increasingly important role in power distribution and transmission. It integrates numerous power components such as circuit breakers and digital unit (DTU), which generate significant heat during load operation. High temperatures can severely impact the performance and lifespan of electronic components, potentially leading to reduced lifespan, decreased insulation performance, and even malfunctions. Therefore, maintaining a suitable internal temperature for the RMS is crucial for ensuring the reliability of power equipment. Furthermore, RMS faces complex and variable weather conditions in outdoor environments, further increasing the difficulty of heat dissipation and stable operation. Effective heat dissipation of the RMS directly affects the safe and stable operation of the power system and is of great significance for ensuring the electricity needs of residents and businesses.

[0003] In related technologies, a combination of fans and ventilation holes is commonly used to solve the heat dissipation problem of ring main units. Fans, as a common heat dissipation tool, generate airflow through their operation, expelling hot air from inside the ring main unit to the outside, thus achieving a certain degree of cooling. Ventilation holes are openings in the ring main unit's casing, utilizing the principle of natural convection to allow cool air from the outside to enter the unit and hot air to escape, thereby regulating the internal temperature. This combination of fans and ventilation holes can alleviate the heat dissipation pressure of ring main units to a certain extent, and due to its relatively simple structure and low cost, it has become a commonly used heat dissipation method. However, this heat dissipation method relies on the natural environment and the limited airflow of the fan. Its heat dissipation capacity is significantly limited when facing high temperatures or when the ring main unit operates under high loads, generating a large amount of heat.

[0004] Existing cooling technologies using fans and vents suffer from low heat dissipation efficiency. When the electrical components inside the ring main unit generate significant heat, the fans and vents cannot dissipate the heat quickly enough, requiring a considerable amount of time for the internal temperature to drop. Under high-temperature conditions, the electrical components inside the ring main unit are prone to prolonged exposure to high temperatures due to the inability to cool down quickly. This not only accelerates component aging and reduces their lifespan but may also lead to decreased insulation performance, increasing the probability of malfunctions and ultimately affecting the normal operation of the ring main unit and the stable operation of the power system. Summary of the Invention

[0005] To increase the heat dissipation efficiency of the ring main unit, this application provides a primary and secondary integrated ring main unit.

[0006] The primary and secondary integrated ring network box includes a box body with a door, and also includes an evaporative cooling device and a forced cooling device.

[0007] The evaporative cooling device includes:

[0008] A water storage tank is connected to the tank body. The water storage tank is connected to a water guide cover via a fixed column. Outside rainwater flows into the water storage tank along the surface of the water guide cover. The water guide cover is equipped with a filter screen, which is connected to the inner wall of the water storage tank.

[0009] A heat dissipation interlayer is provided on the side wall of the tank. The heat dissipation interlayer has a water inlet that communicates with the inside of the water storage tank. A water-absorbing sponge is provided inside the heat dissipation interlayer.

[0010] The side wall of the enclosure has several ventilation holes, and the ventilation layer is connected to the outside through the ventilation holes;

[0011] Forced cooling devices include:

[0012] The fan is connected to the box door, which has several air inlets, and the box has several air outlets that communicate with the heat dissipation layer.

[0013] The first telescopic motor is connected to the housing. The drive rod of the first telescopic motor is connected to a ventilation plate. The ventilation plate has a number of connecting holes corresponding to the air outlets, and the ventilation plate is slidably connected to the housing.

[0014] The temperature sensor is connected to the housing and electrically connected to the first telescopic motor and the fan.

[0015] By adopting the above technical solutions, the evaporative cooling device continuously cools the surface of the box through evaporation, while the forced cooling device accelerates the heat exchange efficiency between the box and the outside environment. The combination of the two effectively dissipates heat from the box. The water guide cover allows rainwater to flow into the water storage tank, and the filter screen prevents external impurities from entering the water storage tank. The water-absorbing sponge in the heat dissipation layer absorbs water from the water storage tank. When the ambient temperature is high, the condensate in the water-absorbing sponge absorbs heat and evaporates, exchanging heat with the inside of the box and reducing the surface temperature of the box. The fan introduces outside air through the air inlet. When the temperature sensor detects that the temperature inside the box has reached a certain value, it controls the first telescopic motor to align the connecting hole of the ventilation plate with the air outlet, accelerating the discharge of hot air from the box and enhancing the heat dissipation effect.

[0016] Optionally, the evaporative cooling device also includes a water storage tank installed inside the box, with a water injection pump connected to the water storage tank and the water injection pump connected to the water storage tank through a pipe.

[0017] The water storage tank is equipped with a level detector, which is used to monitor the level of condensate in the water storage tank in real time and is electrically connected to the water injection pump.

[0018] By adopting the above technical solution, a water storage tank and a water injection pump are set up, and the water storage tank is connected by a pipeline. With the help of a liquid level detector to monitor the condensate level in the water storage tank in real time and control the operation of the water injection pump, it can be ensured that there is always condensate in the water storage tank on non-rainy days, ensuring that there is enough water in the water-absorbing sponge for evaporation and heat dissipation, thereby increasing the heat dissipation efficiency of the ring network box.

[0019] Optionally, a siphon pipe is installed inside the water storage tank. The siphon pipe is located inside the tank and contains a pressure sensor that is electrically connected to the water injection pump.

[0020] By adopting the above technical solution, a siphon pipe is installed in the water storage tank, and a pressure sensor electrically connected to the water injection pump is installed in the pipe. When it rains and the water level inside the water storage tank is too high, triggering the siphon effect, the pressure sensor contacts the condensate and triggers the water injection pump to stop working, thus avoiding the liquid level detector controlling the water injection pump to inject water into the water storage tank when the siphon pipe is working.

[0021] Optionally, a spiral pipe is connected to the bottom of the siphon pipe, and the spiral pipe is connected to the water storage tank.

[0022] By adopting the above technical solution, the water storage tank is equipped with a siphon pipe, which contains a pressure sensor connected to the water injection pump. The bottom of the siphon pipe is connected to a spiral pipe leading to the water storage tank, which can increase the flow rate of condensate and improve the efficiency of draining excess condensate from the water storage tank.

[0023] Optionally, a second telescopic motor is installed inside the tank. The drive rod of the second telescopic motor is connected to a water-blocking block. The water-blocking block is slidably connected to the inner wall of the water tank at the water inlet, and the water-blocking block covers the water inlet.

[0024] By adopting the above technical solution, a second telescopic motor and a water baffle are installed. The water baffle can be controlled to slide to open and close the water inlet as needed, thereby reducing the loss of condensate in the water storage tank.

[0025] Optionally, a humidity sensor is installed at the end of the absorbent sponge away from the water tank. The humidity sensor is electrically connected to the second telescopic motor. A water storage block is installed on the inner wall of the heat dissipation jacket, and the absorbent sponge is inserted into the water storage block.

[0026] By adopting the above technical solution, the water-absorbing sponge is inserted into the water storage block, which allows excess condensate on the water-absorbing sponge to flow into the water storage block, reducing the loss of water from the water-absorbing sponge and increasing the duration of evaporation of the water-absorbing sponge.

[0027] Optionally, the housing is provided with a moisture-proof groove, and the air outlet is located on the inner wall of the moisture-proof groove near the water-absorbing sponge. The moisture-proof groove is provided with a moisture-proof plate, and the moisture-proof plate is provided with a number of moisture-proof holes corresponding to the connecting holes. A sealing block is provided on the side of the moisture-proof plate away from the water-absorbing sponge, and the sealing block abuts against the ventilation plate.

[0028] By adopting the above technical solution, a moisture-proof groove, a moisture-proof plate, a moisture-proof hole, and a sealing block are set up. When the temperature sensor detects that the temperature inside the chamber is greater than or equal to 40°C, the ventilation plate moves so that the connecting hole aligns with the moisture-proof hole. The airflow generated by the fan is then processed and flows to the water-absorbing sponge to increase evaporation efficiency and promote the cooling of the chamber. When the temperature sensor detects that the temperature inside the chamber is lower than or equal to 25°C, the ventilation plate moves so that the connecting hole and the moisture-proof hole are misaligned and abut against the sealing block, which can prevent moisture from flowing back into the chamber.

[0029] Optionally, the forced cooling device also includes an air duct that communicates with the inside of the housing, the air duct extends into the water storage tank, and the air duct passes through the inner wall of the water storage tank and communicates with the moisture-proof groove; the housing is equipped with a third telescopic motor, the drive rod of the third telescopic motor is connected to a cover plate, the cover plate is placed on one end of the air inlet of the air duct, and the third telescopic motor is electrically connected to a temperature sensor.

[0030] By adopting the above technical solution, the air duct is connected to the inside of the box, the water storage tank, and the moisture-proof groove. With the cooperation of the third telescopic motor and the cover plate, when the temperature sensor detects different temperatures, it can control the opening and closing of the air duct inlet of the cover plate, so that the airflow generated by the fan can selectively enter the air duct to cool the condensate in the water storage tank or directly blow air into the inside of the box to cool it down, thereby enhancing the intelligent controllability and heat dissipation effect of the heat dissipation device.

[0031] Optionally, the enclosure is equipped with a maintenance door at the heat dissipation layer, and the water-absorbing sponge is detachably connected to the inner wall of the heat dissipation layer.

[0032] By adopting the above technical solution and setting up a maintenance door, the water-absorbing sponge can be detachably connected to the inner wall of the heat dissipation layer, making it convenient to replace and install the water-absorbing sponge.

[0033] Optionally, the inner wall of the door is connected with sound-insulating foam, the fan is installed inside the sound-insulating foam, and a dustproof net is installed on the surface of the door, with the dustproof net covering the air inlet.

[0034] By adopting the above technical solutions, the vibration of the fan can be reduced by wrapping the fan with sound-insulating sponge; and the dustproof netting used to cover the air inlet can reduce the amount of dust entering the housing.

[0035] In summary, this application includes at least one of the following beneficial technical effects:

[0036] 1. The water-absorbing sponge of the evaporative heat dissipation device absorbs the condensate in the water storage tank. When the ambient temperature is high, the condensate in the water-absorbing sponge absorbs heat and evaporates, exchanging heat with the inside of the tank, which can reduce the temperature of the tank surface and improve heat dissipation efficiency.

[0037] 2. The forced cooling device consists of a fan, a first telescopic motor, and a temperature sensor. When the temperature sensor detects that the temperature inside the chamber is greater than or equal to 40°C, the ventilation plate moves so that the connecting hole aligns with the air outlet, allowing the airflow generated by the fan to exhaust the hot air into the heat dissipation layer, increasing the evaporation efficiency of the water-absorbing sponge and further promoting the cooling of the chamber.

[0038] 3. Through the cooperation of components such as liquid level detector, water injection pump, and pressure sensor, it can be ensured that there is always condensate in the water storage tank, keep the water-absorbing sponge moist, and maintain the continuous evaporative heat dissipation. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of this application;

[0040] Figure 2 This is a structural diagram of the present application, mainly showing the water storage tank;

[0041] Figure 3 This is a structural diagram of the present application, mainly showing the door of the water storage chamber;

[0042] Figure 4 This is a structural diagram of the present application, mainly showing the water storage chamber;

[0043] Figure 5 yes Figure 1 A schematic diagram of the cross-sectional structure along plane AA.

[0044] Figure 6 yes Figure 1 A schematic diagram of the cross-sectional structure along the BB plane.

[0045] Attached Figure Descriptions: 1. Box Body; 2. Box Door; 3. Evaporative Cooling Device; 301. Water Storage Tank; 302. Fixing Column; 303. Water Guide Cover; 304. Filter Screen; 305. Water Storage Tank; 306. Water Injection Pump; 307. Siphon Pipe; 308. Spiral Pipe; 309. Absorbent Sponge; 310. Water Storage Block; 4. Forced Cooling Device; 401. Fan; 402. Moisture Insulation Board; 403. Ventilation Board; 404. Air Duct; 5. Water Storage Chamber; 6. 1. Liquid level detector; 7. Pressure sensor; 8. Heat dissipation jacket; 9. Water inlet; 10. Waterproof tank; 11. Second telescopic motor; 12. Water baffle; 13. Heat dissipation hole; 14. Humidity sensor; 15. Maintenance door; 16. Air inlet; 17. Sound insulation sponge; 18. Dustproof net; 19. Moisture isolation groove; 20. Air outlet; 21. Moisture isolation hole; 22. First telescopic motor; 23. Temperature sensor; 24. Third telescopic motor; 25. Cover plate. Detailed Implementation

[0046] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 This application will be described in further detail below.

[0047] Primary and secondary integrated ring main units, refer to Figure 1 The device includes a housing 1, a door 2 rotatably connected to the housing 1, an evaporative cooling device 3, and a forced cooling device 4. The evaporative cooling device 3 uses evaporation to continuously cool the surface of the housing 1, and the forced cooling device 4 can accelerate the heat exchange efficiency between the housing 1 and the outside world, thereby dissipating heat from the housing 1.

[0048] Reference Figure 1 , Figure 2 The evaporative cooling device 3 includes a water storage tank 301, the size of which matches the box body 1 and is fixedly connected to the top of the box body 1. The top of the water storage tank 301 is flush with the top of the side panel of the box body 1. Furthermore, the bottom of the water storage tank 301 is arc-shaped, and the top of the water storage tank 301 is open. Four fixing posts 302 are fixedly connected to the bottom surface inside the water storage tank 301, and a water guide cover 303 is fixedly connected to the end of each fixing post 302 away from the box body 1. The upper surface of the water guide cover 303 is arc-shaped and protrudes, and a gap of 20-30 cm is provided between the water guide cover 303 and the inner wall of the water storage tank 301, so that external rainwater can slide along the surface of the water guide cover 303 and fall into the water storage tank 301. Meanwhile, a filter screen 304 is fixedly connected to the side of the water guide cover 303, and is fixedly connected to the top surface of the water storage tank 301 through the filter screen 304. The filter screen 304 can effectively block external impurities from entering the water storage tank 301.

[0049] Reference Figure 2 , Figure 3 , Figure 4 The back panel of the housing 1 is equipped with a water storage chamber 5, and a water storage door is opened on the side of the water storage chamber 5 away from the door 2. A water storage tank 305 is installed inside the water storage chamber 5, and a water injection pump 306 is fixedly connected to the side wall of the water storage tank 305. The water injection pump 306 is connected to the water storage tank 301 through a pipe. At the same time, a liquid level detector 6 is fixedly connected to the inner wall of the water storage tank 301. The liquid level detector 6 is used to detect the liquid level in the water storage tank 301. The liquid level detector 6 is electrically connected to the water injection pump 306 to ensure that there is always condensate in the water storage tank 301 when it is not raining.

[0050] A siphon pipe 307 is fixedly connected inside the water storage tank 301. One end of the siphon pipe 307 is connected to the inner wall of the water storage tank 301. The inlet of the siphon pipe 307 is spaced from the bottom surface of the water storage tank 301, and the "U"-shaped tube of the siphon pipe 307 is pre-filled with condensate. The outlet end of the siphon pipe 307 penetrates the side wall of the water storage tank 301 and extends into the water storage chamber 305. A spiral pipe 308, which is connected to the siphon pipe 307, is fixedly connected inside the water storage chamber 305. The spiral pipe 308 is also connected to the water storage tank 305. When the condensate flows in the spiral pipe 308, the flow rate increases, thereby improving the discharge efficiency of excess condensate in the water storage tank 301.

[0051] A pressure sensor 7 is fixedly connected to the siphon pipe 307. The pressure sensor 7 is electrically connected to the water injection pump 306. This allows the pressure sensor 7 to contact the condensate and trigger the water injection pump 306 when it rains and the water level inside the water storage tank 301 is higher than the siphon pipe 307, thus triggering the siphon effect. When the pressure sensor 7 is triggered, the liquid level detector 6 disconnects from the water injection pump 306, thereby preventing the liquid level detector 6 from controlling the water injection pump 306 to inject condensate into the water storage tank 301 when the siphon pipe 307 is working.

[0052] Reference Figure 4 , Figure 5 The side wall of the housing 1 is provided with a heat dissipation jacket 8, and the inner wall of the heat dissipation jacket 8 is provided with a water inlet 9 that communicates with the water storage tank 301. The water inlet 9 is located between the water inlet of the siphon pipe 307 and the bottom surface of the water storage tank 301. A waterproof box 10 is fixedly connected to the side wall of the heat dissipation jacket 8 at the water inlet 9. A second telescopic motor 11 is fixedly connected inside the waterproof box 10. The drive rod of the second telescopic motor 11 extends through the waterproof box 10 into the water storage tank 301, and a water baffle 12 is fixedly connected to the end of the drive rod of the second telescopic motor 11. The water baffle 12 is slidably connected to the inner wall of the water storage tank 301. At the same time, when the drive rod of the second telescopic motor 11 extends, the water baffle 12 covers the water inlet 9, and a sealing gasket is fixedly connected to the water baffle 12 to prevent condensate in the water storage tank 301 from entering the heat dissipation jacket 8.

[0053] The housing 1 has several ventilation holes 13 on one side of the heat dissipation layer 8, which communicate with the outside. Meanwhile, the inner wall of the heat dissipation layer 8 is connected to a water-absorbing sponge 309 by screws. The water-absorbing sponge 309 is melamine sponge, which has high water absorption and high water retention properties. The water inlet 9 is opened by the water baffle 12. When the liquid level detector 6 detects that the liquid level in the water storage tank 301 is lower than the water inlet 9, the liquid level detector 6 drives the water injection pump 306 to start and inject condensate into the water storage tank 301, thereby ensuring the moisture content of the water-absorbing sponge 309.

[0054] Reference Figure 5Condensate flows into the heat dissipation interlayer 8 through the inlet 9, where the melamine sponge is quickly soaked, reducing moisture loss. When the ambient temperature is high, the condensate in the absorbent sponge 309 absorbs heat and evaporates under the influence of the environment, thus exchanging heat with the interior of the cabinet 1 and reducing the surface temperature of the cabinet 1.

[0055] Reference Figure 4 , Figure 5 A humidity sensor 14 is fixedly connected to the bottom of the absorbent sponge 309, and the humidity sensor 14 is electrically connected to the second telescopic motor 11. After the bottom of the absorbent sponge 309 is wetted, the humidity sensor 14 triggers the second telescopic motor 11 to start, causing the water-blocking block 12 to close the water inlet 9, thereby reducing the loss of condensate in the water storage tank 301. A maintenance door 15 is installed on the side wall of the heat dissipation layer 8 of the housing 1, and the heat dissipation hole 13 is opened on the maintenance door 15, so as to facilitate the replacement and installation of the absorbent sponge 309. In addition, a water storage block 310 is fixedly connected to the inner wall of the bottom surface of the heat dissipation jacket 8. The cross-section of the water storage block 310 is U-shaped. The water-absorbing sponge 309 is inserted into the water storage block 310 and the outer surface of the water-absorbing sponge 309 abuts against the inner wall of the water storage block 310. This allows excess condensate on the water-absorbing sponge 309 to flow into the water storage block 310 and reduces the loss of water in the water-absorbing sponge 309, thereby increasing the duration of evaporation of the water-absorbing sponge 309.

[0056] Reference Figure 1 , Figure 6 The forced cooling device 4 includes a fan 401, which is connected to the inner wall of the enclosure door 2. Several air inlets 16 are provided on the enclosure door 2 to support airflow to the fan 401. Additionally, a sound-insulating sponge 17 is fixedly connected to the inner wall of the enclosure door 2, and the fan 401 is fixedly connected inside the sound-insulating sponge 17 cover, thereby reducing vibration of the fan 401 during operation. Simultaneously, a dustproof net 18 is fixedly connected to the surface of the enclosure door 2, and the dustproof net 18 covers the air inlets 16, thereby reducing dust entering the enclosure 1.

[0057] Reference Figure 5A moisture-proof groove 19 is formed on the inner wall of the housing 1 on the same side as the heat dissipation interlayer 8. The outer surface of the moisture-proof groove 19 at the bottom abuts against the water-absorbing sponge 309, and the size of the moisture-proof groove 19 is smaller than the size of the water-absorbing sponge 309. At the same time, several air outlet holes 20 are formed at the bottom of the moisture-proof groove 19. A moisture-proof plate 402 is fixedly connected to the inner wall of the moisture-proof groove 19. A sealing block is fixedly connected to the side of the moisture-proof plate 402 away from the moisture-absorbing sponge. At the same time, several moisture-proof holes 21 are formed on the moisture-proof plate 402 and the sealing block. A ventilation plate 403 is slidably connected to the inner wall of the moisture-proof groove 19. The ventilation plate 403 has a number of connecting holes corresponding to the number of moisture-proof holes 21. In addition, a first telescopic motor 22 is fixedly connected inside the housing 1. The drive rod of the first telescopic motor 22 is fixedly connected to the ventilation plate 403.

[0058] A temperature sensor 23 is fixedly connected inside the housing 1. The temperature sensor 23 is electrically connected to the first telescopic motor 22 and the fan 401. When the temperature sensor 23 detects that the temperature inside the housing 1 is greater than or equal to 40°C, the first telescopic motor 22 starts and controls the ventilation plate 403 to slide closer to the top surface of the housing 1. This makes the connecting holes on the ventilation plate 403 correspond one-to-one with the moisture-proof holes 21. After the airflow generated by the fan 401 cools the inside of the housing 1, the hot air can flow into the moisture-absorbing sponge from the connecting holes, moisture-proof holes 21, and air outlet 20, thereby increasing the evaporation efficiency of the moisture-absorbing sponge and further promoting the cooling of the housing 1.

[0059] Four air ducts 404 are fixedly connected to the top surface of the housing 1. The portion of the air duct 404 inside the housing 1 is flush with the top surface of the housing 1. Simultaneously, the air duct 404 extends from the housing 1 into the water storage tank 301, and the portion of the air duct 404 inside the water storage tank 301 penetrates the inner wall of the water storage tank 301 and extends into the moisture-proof groove 19, thereby connecting the inner wall of the housing 1 with the moisture-proof groove 19. Furthermore, an air inlet plate is connected to the air inlet of the air duct 404. A third telescopic motor 24 is fixedly connected to the top surface inside the housing 1. The drive rod of the third telescopic motor 24 is fixedly connected to a cover plate 25, and the cover plate 25 covers the air inlet plate of the air duct 404.

[0060] Reference Figure 5 , Figure 6The third telescopic motor 24 is electrically connected to the temperature sensor 23. After the temperature sensor 23 is triggered for the first time and starts the first telescopic motor 22 and the fan 401, the temperature inside the box 1 continues to decrease under the action of the fan 401 and the moisture-absorbing sponge. When the temperature sensor 23 detects that the internal temperature of the box 1 is lower than or equal to 25°C, the temperature sensor 23 is triggered for the second time, the first telescopic motor 22 is started and controls the ventilation plate 403 to slide closer to the bottom surface of the box 1, so that the connecting hole on the ventilation plate 403 is misaligned with the moisture-proof hole 21, and the ventilation plate 403 abuts against the sealing block. At the same time, the third telescopic motor 24 is driven to open the air inlet of the duct 404 through the cover plate 25, and the fan 401 continuously blows air to cool the inside of the box 1, so that the airflow generated by the fan 401 enters the inside of the duct 404 and lowers the temperature of the condensate in the water storage tank 301 through the duct 404. When the temperature sensor 23 detects that the temperature inside the box 1 is lower than or equal to 20°, the third telescopic rod drives the cover plate 25 to close the air inlet of the duct 404, and the fan 401 stops running.

[0061] The implementation principle of this application embodiment is as follows: When the power components inside the ring main unit generate heat, the system dissipates heat through dual-mode coordinated cooling. External rainwater is guided through the arc-shaped surface of the water guide cover 303, filtered through the filter screen 304 to remove impurities, and then enters the water storage tank 301 for storage. Condensate in the water storage tank 301 is absorbed by the water inlet 9 and soaked in the absorbent sponge 309 (melamine sponge), which uniformly stores water through capillary action. When the surface temperature of the unit 1 rises, the water in the absorbent sponge 309 absorbs heat and evaporates, then is discharged through the heat dissipation holes 13, continuously reducing the sidewall temperature of the unit 1 through phase change heat absorption.

[0062] During non-rainy days, the level detector 6 monitors the water level in the storage tank 301 and triggers the water injection pump 306 to replenish water from the storage tank 305, ensuring the sponge remains continuously moist. After the humidity sensor 14 at the bottom of the absorbent sponge 309 detects saturation, it activates the second telescopic motor 11 to drive the water-blocking block 12 to close the inlet 9, preventing excessive water seepage. During rainy days, when the storage tank 301 overflows, the siphon effect triggers the pressure sensor 7, stopping the water injection pump 306 and activating the siphon pipe 307. Excess condensate flows back to the storage tank 305 via the spiral pipe 308.

[0063] When the temperature sensor 23 detects an internal temperature ≥40℃, the fan 401 is activated, and external airflow enters the chamber through the dust filter 18 and the air inlet 16. The first telescopic motor 22 pushes the ventilation plate 403 to slide, aligning the connecting hole with the air outlet 20 and the moisture barrier 21. Hot air inside the chamber is guided through the air outlet 20 into the moisture barrier 19, penetrates the absorbent sponge 309 to enhance evaporation efficiency, and is finally discharged through the heat dissipation hole 13. When the temperature ≤25℃, the ventilation plate 403 resets, causing the connecting hole to misalign, and the sealing block closes the air duct, preventing moisture backflow. When the temperature ≤20℃, the third telescopic motor 24 drives the cover plate 25 to close the inlet of the air duct 404, and the fan 401 stops. During high temperatures, the cover plate 25 opens, and the airflow from the fan 401 flows through the air duct 404 and through the water tank 301 to cool the condensate, enhancing the evaporative heat dissipation potential.

[0064] In addition, the sound-absorbing sponge 17 suppresses the vibration noise of the fan 401, and the dustproof net 18 blocks external dust. The maintenance door 15 facilitates the replacement of the water-absorbing sponge 309; the water storage block 310 stores excess water from the sponge and prolongs the evaporation time.

[0065] Among them, evaporative cooling continuously reduces the surface temperature of the cabinet 1, and forced heat dissipation quickly removes the internal heat. The dual system intelligently switches through temperature control, which not only ensures heat dissipation efficiency under high temperature conditions, but also avoids energy waste in low temperature environments, thus achieving a balance between energy saving and reliability.

[0066] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A primary and secondary integrated ring network box, comprising a box body (1), wherein the box body (1) is provided with a box door (2), characterized in that: It also includes an evaporative cooling device (3) and a forced cooling device (4); The evaporative heat dissipation device (3) includes: A water storage tank (301) is connected to the tank body (1). The water storage tank (301) is connected to a water guide cover (303) via a fixed column (302). External rainwater flows into the water storage tank (301) along the surface of the water guide cover (303). The water guide cover (303) is equipped with a filter screen (304), which is connected to the inner wall of the water storage tank (301). A heat dissipation interlayer (8) is provided on the side wall of the box body (1). A water inlet (9) communicating with the inside of the water storage tank (301) is provided on the heat dissipation interlayer (8). A water-absorbing sponge (309) is provided inside the heat dissipation interlayer (8). The side wall of the box (1) is provided with several heat dissipation holes (13), and the heat dissipation interlayer (8) is connected to the outside through the heat dissipation holes (13); The forced heat dissipation device (4) includes: A fan (401) is connected to the box door (2). The box door (2) has several air inlets (16) and the box body (1) has several air outlets (20) that communicate with the heat dissipation interlayer (8). The first telescopic motor (22) is connected to the box body (1). The drive rod of the first telescopic motor (22) is connected to a ventilation plate (403). The ventilation plate (403) has a number of connecting holes corresponding to the air outlet (20), and the ventilation plate (403) is slidably connected to the box body (1). Temperature sensor (23) is connected to the housing (1), and the temperature sensor (23) is electrically connected to the first telescopic motor (22) and the fan (401); The housing (1) has a moisture-proof groove (19), and the air outlet (20) is located on the inner wall of the moisture-proof groove (19) near the water-absorbing sponge (309). The moisture-proof groove (19) is provided with a moisture-proof plate (402), and the moisture-proof plate (402) has a number of moisture-proof holes (21) corresponding to the connecting holes. A sealing block is provided on the side of the moisture-proof plate (402) away from the water-absorbing sponge (309), and the sealing block abuts against the ventilation plate (403). The forced heat dissipation device (4) also includes an air duct (404) that communicates with the inside of the box (1). The air duct (404) extends into the water storage tank (301), and the air duct (404) communicates with the moisture-proof groove (19) after penetrating the inner wall of the water storage tank (301). The housing (1) is equipped with a third telescopic motor (24), the drive rod of the third telescopic motor (24) is connected to a cover plate (25), the cover plate (25) covers one end of the air inlet of the air duct (404), and the third telescopic motor (24) is electrically connected to the temperature sensor (23). The inner wall of the box door (2) is connected with sound insulation sponge (17), the fan (401) is installed in the sound insulation sponge (17), and the surface of the box door (2) is provided with a dustproof net (18), which covers the air inlet (16). When the temperature sensor (23) detects that the temperature inside the box is ≥40℃, the fan (401) is started. The outside airflow is filtered through the dustproof net (18) and enters the box through the air inlet (16). The first telescopic motor (22) pushes the ventilation plate (403) to slide, so that the connecting hole aligns with the air outlet (20) and the moisture-proof hole (21). The hot air inside the box is introduced into the moisture-proof groove (19) through the air outlet (20), penetrates the water-absorbing sponge (309) to enhance the evaporation efficiency, and is finally discharged through the heat dissipation hole (13). When the temperature is ≤25℃, the ventilation plate (403) is reset to make the connecting hole misaligned, and the sealing block closes the air duct to block the return of moisture. When the temperature is ≤20℃, the third telescopic motor (24) drives the cover plate (25) to close the air duct (404) inlet, and the fan (401) stops.

2. The primary and secondary integrated ring network box according to claim 1, characterized in that: The evaporative heat dissipation device (3) also includes a water storage tank (305) installed in the box (1), and a water injection pump (306) is connected to the water storage tank (305). The water injection pump (306) is connected to the water storage tank (301) through a pipe. The water storage tank (301) is equipped with a liquid level detector (6), which is used to monitor the liquid level of condensate in the water storage tank (301) in real time and is electrically connected to the water injection pump (306).

3. The primary and secondary integrated ring network box according to claim 2, characterized in that: The water storage tank (301) is equipped with a siphon pipe (307), which is located inside the tank body (1). A pressure sensor (7) is installed inside the siphon pipe (307), and the pressure sensor (7) is electrically connected to the water injection pump (306).

4. The primary and secondary integrated ring network box according to claim 3, characterized in that: The bottom of the siphon pipe (307) is connected to a spiral pipe (308), which is connected to the water storage tank (305).

5. The primary and secondary integrated ring network box according to claim 1, characterized in that: The box (1) is equipped with a second telescopic motor (11), and the drive rod of the second telescopic motor (11) is connected to a water baffle (12). The water baffle (12) is slidably connected to the inner wall of the water tank (301) at the water inlet (9), and the water baffle (12) covers the water inlet (9).

6. The primary and secondary integrated ring network box according to claim 5, characterized in that: A humidity sensor (14) is provided at the end of the absorbent sponge (309) away from the water tank (301). The humidity sensor (14) is electrically connected to the second telescopic motor (11). A water storage block (310) is provided on the inner wall of the heat dissipation interlayer (8). The absorbent sponge (309) is inserted into the water storage block (310).

7. The primary and secondary integrated ring network box according to claim 1, characterized in that: The housing (1) is provided with a maintenance door (15) at the heat dissipation interlayer (8), and the water-absorbing sponge (309) is detachably connected to the inner wall of the heat dissipation interlayer (8).

Citation Information

Patent Citations

  • Energy-saving transformer substation

    CN113585832A

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    CN211238960U