A heat dissipation structure of a power distribution cabinet

Abstract

The application relates to the heat dissipation technical field of power distribution cabinets, and particularly provides a heat dissipation structure of a power distribution cabinet, which comprises a power distribution cabinet body, a heat dissipation area is arranged in the power distribution cabinet body, a first heat dissipation fin and a plurality of electrical elements are arranged in the heat dissipation area, a water cooling circulation pipeline is arranged in the first heat dissipation fin, a second heat dissipation fin is arranged at the corresponding position of the heat dissipation area on the outer side wall of the power distribution cabinet body, a spray head is arranged outside the power distribution cabinet body, when the temperature in the power distribution cabinet exceeds a preset value (such as 80 DEG C), the spray head sprays water to the second heat dissipation fin outside the cabinet body, the temperature of the second heat dissipation fin is rapidly reduced by using the heat absorption of water evaporation, and then the heat absorption capacity of the second heat dissipation fin to the heat of the first heat dissipation fin and the water cooling circulation pipeline in the cabinet is enhanced, the problem that the heat dissipation efficiency of traditional water cooling is reduced after the water temperature rises is effectively solved, and dangerous accidents caused by high-temperature accumulation are avoided.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation technology for power distribution cabinets, and in particular to a heat dissipation structure for power distribution cabinets. Background Technology

[0002] A distribution cabinet is the final stage equipment in a power distribution system. It is an electrical device used for power distribution, control, and protection. It is assembled from solenoid valves, measuring instruments, protective electrical appliances, and auxiliary equipment according to a certain wiring scheme. Its function is to distribute electrical energy to various power lines as required, which facilitates the configuration of power supplies by section or category. When a line fault occurs, it helps to control the scope of the fault and makes it easier for maintenance personnel to quickly find the fault point.

[0003] Electrical components inside a distribution cabinet generate heat during operation. Excessive heat accumulation can lead to decreased component performance, shortened lifespan, or even malfunctions. Therefore, distribution cabinets are generally equipped with heat dissipation structures. For example, Chinese patent CN111900640A discloses an outdoor distribution cabinet that uses both water cooling and air cooling to improve heat dissipation performance.

[0004] However, the efficiency of the air-cooled equipment in the above scheme is greatly affected by the environment. It has a better heat dissipation effect when the ambient temperature is low. As the temperature of the circulating water in the water-cooled equipment increases, the heat dissipation efficiency will decrease, making it difficult to control the high temperature of the internal circuit components and easily causing dangerous accidents. Summary of the Invention

[0005] Therefore, it is necessary to provide a heat dissipation structure for power distribution cabinets to address the problem that current water-cooled equipment cannot control the high temperature inside the cabinet when its heat dissipation efficiency decreases.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A heat dissipation structure for a power distribution cabinet, comprising:

[0008] The power distribution cabinet body has a heat dissipation area inside, and multiple electrical components are arranged in the heat dissipation area. A first heat dissipation fin is arranged in the heat dissipation area, and a second heat dissipation fin is arranged on the outer wall of the power distribution cabinet body at the corresponding heat dissipation area.

[0009] A water-cooled circulation pipeline is installed inside the first heat dissipation fins, and a water supply tank is connected to the water-cooled circulation pipeline to supply water to the water-cooled circulation pipeline.

[0010] A spray head is located above the second heat dissipation fin. The spray head is connected to a water supply pipe, which is connected to the water cooling circulation pipeline. A first solenoid valve is installed inside the water supply pipe. The first solenoid valve is configured to close when the internal temperature of the power distribution cabinet is lower than a preset value, and to open when the internal temperature of the power distribution cabinet is higher than the preset value.

[0011] Furthermore, the power distribution cabinet body is provided with an adjustment component, which is used to adjust the water spray volume of the spray head. The water spray volume of the spray head is positively correlated with the amount of water evaporated by the second heat dissipation fins.

[0012] Furthermore, the regulating component includes a rotating valve body and a sensing plate. The rotating valve body is fixedly connected inside the main body of the distribution cabinet and is connected to the water cooling circulation pipe and the water supply pipe. A rotating valve core is rotatably installed inside the rotating valve body. The rotation of the rotating valve core can regulate the water flow. One end of the sensing plate is rotatably connected to the outside of the main body of the distribution cabinet, and the other end of the sensing plate is located below the second heat dissipation fin. The position of the rotatably connected sensing plate is connected to the rotating shaft of the rotating valve core.

[0013] Furthermore, the rotating shaft of the rotating valve core extends out of the rotating valve body, and a first transmission gear is coaxially and fixedly mounted on the rotating shaft. A rack is vertically slidably mounted inside the distribution cabinet body, and the upper half of the rack is provided with a first tooth, which meshes with the first transmission gear. The induction plate is rotatably connected to the distribution cabinet body and a second transmission gear is coaxially and fixedly mounted on it. The lower half of the rack is provided with a second tooth, which meshes with the second transmission gear.

[0014] Furthermore, a water storage tank is provided on the sensing plate.

[0015] Furthermore, the rotary valve body also includes a housing, the outer periphery of which is provided with a connecting hole, and the outer periphery of the rotary valve core is provided with a baffle. The baffle is slidably and sealingly connected to the inner periphery of the housing. The baffle can adjust the opening size of the connecting hole, and the water flow rate is positively correlated with the opening size of the connecting hole.

[0016] Furthermore, the side wall of the power distribution cabinet body is provided with an air inlet and an air outlet, and the air inlet and the air outlet are respectively connected to the first heat dissipation fins.

[0017] Furthermore, a cooling box and a cooling fan are provided at both the air inlet and the air outlet. The cooling box is connected to the water-cooled circulation pipeline, and the cooling fan can blow air towards the cooling box.

[0018] Furthermore, partitions are installed inside the power distribution cabinet near the air inlet and air outlet.

[0019] Furthermore, both the air inlet and the air outlet are equipped with dust filters and desiccants.

[0020] The beneficial effects of this invention are:

[0021] This invention uses spray nozzles to spray water onto the second heat dissipation fins for evaporative cooling. When the internal temperature of the distribution cabinet exceeds a preset value (e.g., 80°C), the spray nozzles spray water onto the second heat dissipation fins on the outside of the cabinet. The evaporation of water absorbs heat and quickly reduces the temperature of the second heat dissipation fins, thereby enhancing their ability to absorb heat from the first heat dissipation fins and water-cooled circulation pipes inside the cabinet. This effectively solves the problem of decreased heat dissipation efficiency in traditional water cooling after the water temperature rises, and avoids the accumulation of high temperature that could lead to dangerous accidents.

[0022] This invention incorporates an adjustment component that regulates the water flow rate of the spray head, ensuring a positive correlation between the spray rate and the water evaporation rate of the second heat dissipation fins. When unevaporated water falls onto the sensing plate, the sensing plate rotates and, through a transmission structure, drives the rotating valve core to reduce the water supply flow rate, thus decreasing the water flow rate. Conversely, the water flow rate is maintained, preventing water waste and achieving efficient water conservation while ensuring effective heat dissipation.

[0023] This invention saves energy through tiered heat dissipation. At low temperatures (≤40℃), it dissipates heat naturally. At medium temperatures (40℃~80℃), it activates the water-cooled circulation pipes and air cooling (heat dissipation fan), further reducing the circulating water temperature through the cooling tank. At high temperatures (>80℃), it combines spray evaporation heat dissipation, forming a three-stage heat dissipation system of "natural heat dissipation - water cooling + air cooling - spray enhancement", which can adapt to the heat dissipation needs of different heat generation and ambient temperatures. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the heat dissipation structure of a power distribution cabinet according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the heat dissipation structure of a power distribution cabinet provided in one embodiment of the present invention from another angle.

[0026] Figure 3 for Figure 1 A front view of the heat dissipation structure of a power distribution cabinet provided in one embodiment;

[0027] Figure 4 for Figure 3 A cross-sectional view along AA of the heat dissipation structure of the power distribution cabinet provided in one embodiment;

[0028] Figure 5 for Figure 3 A cross-sectional view along BB of the heat dissipation structure of the power distribution cabinet provided in one embodiment;

[0029] Figure 6 for Figure 5 A partially enlarged view of the heat dissipation structure X portion of the power distribution cabinet provided in one embodiment;

[0030] Figure 7 for Figure 5 A partially enlarged view of the heat dissipation structure Y portion of the power distribution cabinet provided in one embodiment;

[0031] Figure 8 for Figure 5 A partial cross-sectional view along CC of the heat dissipation structure of the power distribution cabinet provided in one embodiment;

[0032] Figure 9 for Figure 5 A cross-sectional view along DD of the heat dissipation structure of the power distribution cabinet provided in one embodiment;

[0033] Figure 10 for Figure 9 A partially enlarged view of the heat dissipation structure Z part of the power distribution cabinet provided in one embodiment;

[0034] Figure 11 for Figure 2 A left view of the heat dissipation structure of a power distribution cabinet provided in one embodiment;

[0035] Figure 12 for Figure 11 A partially enlarged view of the heat dissipation structure U of the power distribution cabinet provided in one embodiment.

[0036] in:

[0037] 100. Distribution cabinet body; 110. Electrical components; 120. Water-cooled circulation piping; 121. Water pump; 130. First heat dissipation fin; 140. Second heat dissipation fin; 141. Guide plate; 150. Spray head; 151. Water supply pipe; 152. First solenoid valve; 160. Water inlet pipe; 161. Second solenoid valve;

[0038] 200. Rotating valve body; 210. Housing; 211. Connecting hole; 220. Rotating valve core; 230. Baffle; 240. Rotating shaft; 241. First transmission gear; 250. Sensing plate; 251. Water storage tank; 260. Rotating shaft; 261. Second transmission gear; 262. Arc-shaped tooth; 270. Rack; 271. First tooth; 272. Second tooth;

[0039] 300, Air inlet; 310, Air outlet; 320, Dust filter; 330, Cooling box; 340, Zigzag heat sink; 350, Cooling pipe; 360, Partition. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0041] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] The following reference Figures 1-12 This invention describes a heat dissipation structure for a power distribution cabinet.

[0044] A heat dissipation structure for a power distribution cabinet, suitable for heat dissipation of the power distribution cabinet, includes a power distribution cabinet body 100, with multiple electrical components 110 disposed inside the power distribution cabinet body 100. A heat dissipation area is provided inside the power distribution cabinet body 100, and a first heat dissipation fin 130 is disposed within the heat dissipation area. The multiple electrical components 110 are all mounted on the end faces of the first heat dissipation fins 130, which can absorb the heat generated by the multiple electrical components 110. A water-cooled circulation pipe 120 is also provided inside the power distribution cabinet body 100, passing through the first heat dissipation fins 130 in a serpentine shape. There is a connection between the water-cooled circulation pipe 120 and the first heat dissipation fins 130. The gaps facilitate airflow to enhance convective heat dissipation. The heat absorbed by the first heat dissipation fin 130 can be absorbed by the water-cooled circulation pipe 120. A second heat dissipation fin 140 is provided on the outer wall of the distribution cabinet body 100 at a position corresponding to the heat dissipation area. Since the second heat dissipation fin 140 is located on the outside of the distribution cabinet body 100, it can transfer the heat from the first heat dissipation fin 130 and the water-cooled circulation pipe 120 to the outside. In the prior art, the above-mentioned water-cooling heat dissipation method is generally used. However, when the temperature of the water or other liquid in the water-cooling heat dissipation method is too high, the water-cooling heat dissipation efficiency is greatly reduced, making it impossible for the heat inside the distribution cabinet body 100 to dissipate, which can easily lead to dangerous accidents.

[0045] Based on this, the present invention provides a spray head 150 on the power distribution cabinet body 100. The spray head 150 is specifically located above the second heat dissipation fins 140, and a water supply pipe 151 is connected to the spray head 150. The water supply pipe 151 is connected to the water cooling circulation pipe 120, and a first solenoid valve 152 is provided on the water supply pipe 151. Under normal working conditions, the first solenoid valve 152 is in the closed state. When the heat inside the power distribution cabinet body 100 cannot be dissipated, causing the temperature to rise sharply and exceed a preset value (the preset value is 80 degrees Celsius), the first solenoid valve 152 is activated. When valve 152 is opened, water inside the water-cooled circulation pipe 120 will be sprayed out from the spray head 150 through the water supply pipe 151. The sprayed water falls on the second heat dissipation fin 140. The second heat dissipation fin 140 absorbs heat, causing the water to evaporate, thereby quickly reducing the temperature of the second heat dissipation fin 140. As the temperature decreases, the second heat dissipation fin 140 can quickly and continuously absorb the heat from the first heat dissipation fin 130 and the water-cooled circulation pipe 120, thereby alleviating the high temperature inside the distribution cabinet body 100 and reducing the risk of explosions or other dangerous accidents to the distribution cabinet body 100.

[0046] It should be noted that a water supply tank (not shown in the figure) is installed outside the distribution cabinet body 100. The water supply tank is connected to the water-cooled circulation pipe 120 through a water inlet pipe 160. A second solenoid valve 161 is installed at the location where the water supply tank connects to the water-cooled circulation pipe 120. The second solenoid valve 161 is used to control the connection between the water supply tank and the water-cooled circulation pipe 120. The second solenoid valve 161 and the first solenoid valve 152 work synchronously. When the first solenoid valve 152 is opened, the water inside the water-cooled circulation pipe 120 will flow through the spray head. When water is sprayed out at 150°C, the water level inside the water-cooled circulation pipe 120 decreases. Therefore, the second solenoid valve 161 opens simultaneously, allowing water from the water tank to replenish the water-cooled circulation pipe 120. The water replenished from the water tank is at a lower temperature, which allows it to mix with the water inside the water-cooled circulation pipe 120, thereby lowering the overall temperature and improving the heat dissipation capacity of the water-cooled circulation pipe 120. At the same time, the water tank replenishes the water level inside the water-cooled circulation pipe 120, thus preventing the water level inside the water-cooled circulation pipe 120 from decreasing.

[0047] To ensure the water in the water-cooled circulation pipe 120 can circulate, such as Figure 4 , Figure 5 and Figure 7 As shown, a water pump 121 is installed at the bottom of the power distribution cabinet body 100. The water outlet and water inlet of the water pump 121 are both connected to the water cooling circulation pipe 120. When the water pump 121 is working, it can make the water inside the water cooling circulation pipe 120 circulate.

[0048] Specifically, in this embodiment, the distribution cabinet body 100 is also equipped with an adjustment component. The adjustment component is used to adjust the water spray volume of the spray head 150. The water spray volume of the spray head 150 is positively correlated with the evaporation rate of water by the second heat dissipation fins 140. It is understood that spraying water onto the second heat dissipation fins 140 through the spray head 150 can effectively reduce the temperature of the second heat dissipation fins 140, but it will also waste some water resources. Therefore, the adjustment component is set to adjust the water spray volume of the spray head 150 to ensure that water resources are reduced while achieving the cooling effect. When the second heat dissipation fins 140 first come into contact with the water sprayed by the spray head 150... The second heat dissipation fin 140 can evaporate a large amount of water, and its temperature can drop rapidly. When the temperature of the second heat dissipation fin 140 drops significantly, its ability to evaporate water decreases, resulting in a reduction in the amount of water evaporated by the second heat dissipation fin 140. If the spray volume of the spray head 150 is not changed at this time, a large amount of water will only flow across the surface of the second heat dissipation fin 140 and cannot be evaporated, thus failing to achieve the effect of evaporative cooling, and this part of the water will be wasted. Therefore, in order to avoid wasting a lot of water resources, the spray volume of the spray head 150 needs to be reduced when the amount of water evaporated by the second heat dissipation fin 140 decreases, thereby reducing the waste of water resources.

[0049] More specifically, the adjustment assembly of the present invention includes a rotating valve body 200 and a sensing plate 250, wherein the rotating valve body 200 is fixedly mounted on the inner side wall of the distribution cabinet body 100, such as... Figure 10 As shown, the rotating valve body 200 is connected to the water-cooled circulation pipe 120 and the water supply pipe 151 respectively, thereby connecting the water-cooled circulation pipe 120 and the water supply pipe 151. When the temperature inside the distribution cabinet body 100 exceeds the preset value, the first solenoid valve 152 on the water supply pipe 151 is opened. At this time, the water in the water-cooled circulation pipe 120 is sprayed out from the spray head 150 through the water supply pipe 151. The rotating valve body 200 is equipped with a rotating valve core 220. When the rotating valve core 220 rotates, it can change the water flow at the connection between the water-cooled circulation pipe 120 and the water supply pipe 151, thereby adjusting the spray volume of the spray head 150.

[0050] One end of the induction plate 250 is rotatably mounted on the outer wall of the distribution cabinet body 100, such as Figure 11 and Figure 12 As shown, the position where the induction plate 250 is rotatably connected to the power distribution cabinet body 100 is connected to the rotary valve core 220. The other end of the induction plate 250 is located at the lower end of the second heat dissipation fin 140. When the spray head 150 sprays water, the water that has not been evaporated will fall onto the induction plate 250 along the second heat dissipation fin 140. The induction plate 250 is initially in a horizontal state. When the water falls onto the induction plate 250, it will break the balance, thereby causing the induction plate 250 to rotate around the rotatable connection position, which in turn drives the rotary valve core 220 to rotate, so that the rotary valve core 220 reduces the water flow at the connection between the water cooling circulation pipe 120 and the water supply pipe 151.

[0051] It is understandable that when water falls onto the sensor plate 250, it means that not all the water sprayed by the spray head 150 has been evaporated by the second heat dissipation fin 140. At this time, the spray volume of the spray head 150 is relatively large, which is easy to cause waste. If the water sprayed by the spray head 150 does not fall onto the sensor plate 250, then all the water sprayed by the spray head 150 will be evaporated. Therefore, only when water falls onto the sensor plate 250 will the sensor plate 250 rotate, thereby driving the rotating valve core 220 to rotate and thus reducing the spray volume of the spray head 150. When the temperature inside the power distribution cabinet body 100 is lower than the preset value, the first solenoid valve 152 on the water supply pipe 151 will close, thereby stopping the spraying of water by the spray head 150.

[0052] It should be noted that, as Figure 5 , Figure 6 , Figure 7 and Figure 10As shown, in this invention, one end of the rotating shaft 240 of the rotating valve core 220 extends out of the rotating valve body 200. A first transmission gear 241 is coaxially and fixedly mounted on the rotating shaft 240. When the first transmission gear 241 rotates, it drives the rotating valve core 220 to rotate synchronously. A rack 270 is vertically slidably mounted inside the distribution cabinet body 100. The upper part of the rack 270 is provided with a first tooth 271, which meshes with the first transmission gear 241. When the rack 270 moves in the vertical direction, it drives the first transmission gear 241 to rotate through the first tooth 271. The lower part of the 0 is provided with a second tooth 272, and a rotating shaft 260 is provided at one end of the induction plate 250 rotatably connected to the power distribution cabinet body 100. A second transmission gear 261 is coaxially and fixedly provided on the rotating shaft 260. The outer circumference of the second transmission gear 261 is provided with arc-shaped teeth 262, which mesh with the second tooth 272. When the induction plate 250 rotates around the rotating shaft 260, the rotating shaft 260 drives the rack 270 to move in the vertical direction through the arc-shaped teeth 262 and the second tooth 272, thereby causing the rotating valve core 220 to rotate.

[0053] It should also be noted that a torsion spring (not shown in the figure) is provided on the rotation shaft 260 of the induction plate 250 in this invention. The torsion spring is used to keep the induction plate 250 in a horizontal state. Since one end of the induction plate 250 is rotatably connected to the outside of the power distribution cabinet body 100, and the other end of the induction plate 250 is located at the lower end of the second heat dissipation fin 140 and is suspended, the torsion of the torsion spring is used to keep the induction plate 250 in a horizontal state. However, at this time, the induction plate 250 is in a critical state. When water falls on the induction plate 250, it can make the induction plate 250 rotate around the rotation shaft 260, which can adjust the water spray volume of the spray head 150.

[0054] Specifically, in this embodiment, the sensing plate 250 is provided with a water storage tank 251, which is used to store water falling from the second heat dissipation fin 140. A water supply pipe (not shown in the figure) is connected to the bottom of the water storage tank 251. The water supply pipe is connected to a water supply tank, which can draw water from the water storage tank 251 into the water supply tank. When the temperature inside the power distribution cabinet body 100 is lower than a preset value, the water supply tank draws water from the water storage tank 251 into the water supply tank. After the water in the water storage tank 251 is drawn away, the sensing plate 250 returns to a horizontal state, which can prepare for the next spraying by the spray head 150. At the same time, it can further reduce the waste of water resources.

[0055] More specifically, since the second heat dissipation fin 140 of the present invention is connected to the outer wall of the power distribution cabinet body 100, the water sprayed by the spray head 150 will flow over the outer wall of the power distribution cabinet body 100 when it passes through the second heat dissipation fin 140 and cannot fall onto the induction plate 250. Therefore, in this embodiment, a guide plate 141 is provided at the lower end of the second heat dissipation fin 140. The lower end of the guide plate 141 does not contact the outer wall of the power distribution cabinet body 100, that is, the lower end of the guide plate 141 is suspended, and the suspended position is located at the upper end of the induction plate 250. This allows the water flowing from the second heat dissipation fin 140 to be guided to the induction plate 250 through the guide plate 141, avoiding the water from flowing over the outer wall of the power distribution cabinet body 100 and not falling onto the induction plate 250.

[0056] More specifically, such as Figure 9 and Figure 10 As shown, the rotary valve body 200 also includes a housing 210, which is cylindrical in shape. Three connection holes 211 are provided on the outer wall of the housing 210. Two of the three connection holes 211 are connected to the inlet and outlet of the water-cooled circulation pipe 120, respectively, and the last connection hole 211 is connected to the water supply pipe 151. The rotary valve core 220 in this embodiment is hollow. Three baffles 230 are provided on the outer periphery of the rotary valve core 220, with a gap between adjacent baffles 230. All three baffles 230 are slidably sealed to the inner periphery of the housing 210. Initially, when the rotary valve core 220 is not rotating, the baffles 230 of the rotary valve core 220 do not block the connection holes 211, and the opening of the connection holes 211 is at its maximum. When the rotary valve core 220 begins to rotate, as... Figure 10 As shown, when the valve core 220 rotates clockwise, the baffle 230 will gradually block the connection hole 211. The greater the angle of rotation of the valve core 220, the larger the area of ​​the three baffles 230 blocking the three connection holes 211, thereby reducing the opening size of the three connection holes 211 and thus reducing the water flow inside the water supply pipe 151.

[0057] It should be noted that the adjustment component in this invention is not limited to the structure described above. Various other sensors can be used to sense the amount of water evaporation from the second heat dissipation valve core, and an automatically adjusting solenoid valve can be used instead of rotating the valve body 200 to achieve the automatic adjustment function. Of course, other structures are also possible, and no specific limitations are made here.

[0058] In further embodiments, such as Figure 1 , Figure 2 and Figure 4As shown, the side wall of the power distribution cabinet body 100 of the present invention is also provided with an air inlet 300 and an air outlet 310. Both the air inlet 300 and the air outlet 310 are connected to the first heat dissipation fin 130. The gas entering from the air inlet 300 will flow through the first heat dissipation fin 130. The gas can carry away the heat of the water-cooled circulation pipe 120 inside the first heat dissipation fin 130 and the heat of the first heat dissipation fin 130, and discharge it from the air outlet 310. At the same time, the second heat dissipation fin 140 can also absorb the heat of the first heat dissipation fin 130 and the water-cooled circulation pipe 120 inside the first heat dissipation fin 130.

[0059] Specifically, to further improve the heat dissipation effect of the water-cooled circulation pipe 120, a cooling box 330 and a cooling fan (not shown in the figure) are installed at both the air inlet 300 and the air outlet 310. The cooling fan can blow air towards the cooling box 330, such as... Figure 8 As shown, the cooling box 330 is provided with multiple zigzag heat sinks 340, and multiple cooling pipes 350 are installed between adjacent zigzag heat sinks 340. The multiple cooling pipes 350 are interconnected, and the cooling box 330 is connected to the water cooling circulation pipe 120. When the water in the water cooling circulation pipe 120 passes through the cooling box 330, it will pass through the multiple cooling pipes 350. The zigzag heat sinks 340 on the outer periphery of the multiple cooling pipes 350 absorb heat, and the water flowing through the cooling box 330 is cooled by the blowing action of the cooling fan, thereby improving the heat dissipation effect of the water cooling circulation pipe 120.

[0060] More specifically, in this embodiment, the openings of the air inlet 300 and the air outlet 310 are relatively large, and partition plates 360 are provided inside the power distribution cabinet body 100 near the air inlet 300 and the air outlet 310, such as... Figure 4 and Figure 8 As shown, the partition plate 360 ​​is vertically arranged, and the partition plate 360 ​​separates the first heat dissipation fin 130 and multiple electrical components 110, so that part of the gas entering through the air inlet 300 is blown into the first heat dissipation fin 130, and the other part is blown directly onto the surface of the multiple electrical components 110 for direct heat dissipation.

[0061] In a further embodiment, if the ambient air is humid, it will affect the normal operation of the electrical components 110 inside the distribution cabinet body 100. Therefore, a desiccant is provided at the air inlet 300 and the air outlet 310 to absorb moisture in the air. At the same time, the air also contains suspended dust particles. Therefore, a dust filter 320 is also provided at the air inlet 300 and the air outlet 310 to prevent suspended particles such as dust from entering the distribution cabinet body 100 and generating static electricity.

[0062] It should be noted that a temperature sensor (not shown in the figure) is installed inside the distribution cabinet body 100 in this embodiment. The temperature sensor is used to sense the temperature inside the distribution cabinet body 100. Furthermore, the cooling fan and water pump 121 of this invention start at different times, giving the heat dissipation structure three adjustable levels. In the low-temperature range, when the temperature is below 40 degrees Celsius, natural cooling is used, and neither the cooling fan nor the water pump 121 starts. In the medium-temperature range, when the temperature is above 40 degrees Celsius but below 80 degrees Celsius, a combination of air cooling and water cooling is used, i.e., the cooling fan and water pump 121 are started, allowing water to circulate inside the water-cooled circulation pipe 120. Simultaneously, the cooling fan blows air into the cooling box 330, allowing outside air to enter the distribution cabinet body 100 through the air inlet 300. After passing through multiple electrical components 110 and the first heat dissipation fin 130, the air is discharged from the outlet 310, which can handle temperatures below 80 degrees Celsius. In the high-temperature range, when the internal temperature of the distribution cabinet body 100 exceeds 80 degrees Celsius, the water-cooled circulation pipe 120 and the air-cooled cooling method cannot cope with the temperature. At this time, the first solenoid valve 152 and the second solenoid valve 161 are both opened, so that the water supply pipe 151 is connected to the water-cooled circulation pipe 120. At the same time, the water inlet pipe 160 of the water tank is also connected to the water-cooled circulation pipe 120. The water in the water-cooled circulation pipe 120 is sprayed out from the spray head 150 through the water supply pipe 151 and falls on the second heat dissipation fin 140 to spray and evaporate heat from the second heat dissipation fin 140, thereby quickly dissipating the heat inside the distribution cabinet body 100 and preventing overheating.

[0063] The specific working process of the heat dissipation structure of the power distribution cabinet provided by the present invention will be described in conjunction with the above embodiments:

[0064] Low temperature range:

[0065] When the internal temperature of the distribution cabinet body 100 is below 40 degrees Celsius, the cooling fan and water pump 121 inside the distribution cabinet body 100 will not start, and natural cooling will be used.

[0066] Medium temperature range:

[0067] When the internal temperature of the distribution cabinet body 100 is between 40 degrees Celsius and 80 degrees Celsius, the cooling fan and water pump 121 inside the distribution cabinet body 100 start. After the water pump 121 starts, the water inside the water-cooled circulation pipe 120 circulates, thereby absorbing the heat generated by the multiple electrical components 110 inside the distribution cabinet body 100. The water-cooled circulation pipe 120 passes through the first heat dissipation fin 130 in a serpentine shape, and the heat can be conducted to the first heat dissipation fin 130. Since the second heat dissipation fin 140 is close to the first heat dissipation fin 130, the heat dissipation fin 140... The heat from the first heat dissipation fin 130 is transferred to the outside. At the same time, the cooling fan can draw outside air into the power distribution cabinet body 100. After passing through the dust filter 320 and desiccant on the air inlet 300, the outside air passes through the surfaces of multiple electrical components 110 inside the power distribution cabinet body 100 and the first heat dissipation fin 130, thereby further reducing the temperature inside the power distribution cabinet body 100. In addition, the cooling fan blows air through the cooling box 330, and the air dissipates heat from the water inside the cooling box 330, thereby further improving the heat dissipation effect of the water cooling circulation pipe 120.

[0068] High temperature range:

[0069] When the internal temperature of the distribution cabinet body 100 exceeds 80 degrees Celsius, the first solenoid valve 152 and the second solenoid valve 161 open simultaneously. This allows water from the water-cooled circulation pipe 120 to be sprayed from the spray head 150 onto the second heat dissipation fins 140 via the water supply pipe 151. Simultaneously, a water tank replenishes the water-cooled circulation pipe 120 with cooler water. The higher temperature of the second heat dissipation fins 140 evaporates the water sprayed from the spray head 150, allowing the second heat dissipation fins 140 to cool down rapidly. This enables the second heat dissipation fins 140 to absorb more heat from the first heat dissipation fins 130 and the water-cooled circulation pipe 120, thereby lowering the internal temperature of the distribution cabinet body 100 and preventing overheating of the electrical components 110 inside the distribution cabinet body 100.

[0070] As the spraying time of the spray head 150 increases, the temperature of the second heat dissipation fin 140 decreases, and the evaporation rate of water from the second heat dissipation fin 140 gradually decreases. At this time, some of the water sprayed by the spray head 150 will not be evaporated and will fall down the second heat dissipation fin 140 into the water storage tank 251 on the induction plate 250. Since the induction plate 250 is initially in a horizontal state, a torsion spring (not shown in the figure) on the rotating shaft 260 of the induction plate 250 maintains the horizontal state of the induction plate 250. When the unevaporated water falls onto the induction plate 250, the balance of the induction plate 250 is broken. Under the action of gravity, the rotating shaft 260 of the induction plate 250 is driven to rotate. Due to the second transmission gear 261 on the rotating shaft 260... The outer arc-shaped teeth 262 mesh with the second teeth 272 on the rack 270, so the sensing plate 250 drives the rack 270 to move downward through the second transmission gear 261 and the second teeth 272. The first teeth 271 on the rack 270 mesh with the first transmission gear 241. The downward movement of the rack 270 drives the first transmission gear 241 to rotate. The first transmission gear 241 drives the rotating valve core 220 to rotate. When the rotating valve core 220 rotates, it drives the baffle 230 to gradually block the connecting hole 211, so that the opening of the connecting hole 211 is reduced. Since the connecting hole 211 is connected to the water supply pipe 151, the water flow inside the water supply pipe 151 is reduced, which in turn reduces the spray volume of the spray head 150 and reduces the waste of water resources.

[0071] After being sprayed by the spray nozzle 150, the temperature of the second heat dissipation fin 140 drops rapidly, thereby absorbing a large amount of heat inside the power distribution cabinet body 100, which in turn lowers the temperature inside the power distribution cabinet body 100 to below 80 degrees Celsius. When the temperature is below 80 degrees Celsius, the first solenoid valve 152 and the second solenoid valve 161 close, and the water pump 121 and the cooling fan work normally. At the same time, the water tank pumps water out of the water storage tank 251 on the induction plate 250 to prepare for the next high temperature. If the temperature inside the power distribution cabinet body 100 drops to below 40 degrees Celsius, the water pump 121 and the cooling fan stop working and perform natural cooling.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A heat dissipation structure of a power distribution cabinet, characterized in that, The utility model relates to a power distribution cabinet, which comprises a power distribution cabinet body, a plurality of electrical elements arranged in a heat dissipation area inside the power distribution cabinet body, a first heat dissipation fin arranged in the heat dissipation area, a water cooling circulation pipeline arranged in the first heat dissipation fin, a water supplement tank connected to the water cooling circulation pipeline and capable of supplementing water to the water cooling circulation pipeline, a second heat dissipation fin arranged on the outer wall of the power distribution cabinet body corresponding to the heat dissipation area to transfer heat from the first heat dissipation fin and the water cooling circulation pipeline to the outside, a spray head arranged above the second heat dissipation fin, a water supply pipe connected to the spray head and communicated with the water cooling circulation pipeline, a first electromagnetic valve arranged in the water supply pipe and configured to be closed when the temperature inside the power distribution cabinet body is lower than a preset value and opened when the temperature inside the power distribution cabinet body is higher than the preset value, an adjusting assembly arranged on the power distribution cabinet body and used to adjust the water spraying amount of the spray head, the water spraying amount of the spray head being positively correlated with the water evaporation amount of the second heat dissipation fin, a rotating valve body and a sensing plate, a water storage groove being formed in the sensing plate, the rotating valve body being fixedly connected to the inside of the power distribution cabinet body, the rotating valve body being communicated with the water cooling circulation pipeline and the water supply pipe, a rotating valve core being rotatably arranged in the rotating valve body, the rotating valve core being capable of adjusting the water flow, one end of the sensing plate being rotatably connected to the outside of the power distribution cabinet body, the other end of the sensing plate being arranged below the second heat dissipation fin, the rotating connection position of the sensing plate being drivingly connected with the rotating shaft of the rotating valve core, the rotating shaft of the rotating valve core extending out of the rotating valve body, a first transmission gear being coaxially and fixedly arranged on the rotating shaft, a rack being vertically slidably arranged in the power distribution cabinet body, the upper half of the rack being provided with first teeth, the first teeth being engaged with the first transmission gear, a second transmission gear being coaxially and fixedly arranged at the rotating connection position of the sensing plate and the power distribution cabinet body, the lower half of the rack being provided with second teeth, the second teeth being engaged with the second transmission gear, a torsion spring being arranged on the rotating shaft of the sensing plate, the sensing plate being initially in a horizontal state, water falling on the sensing plate breaking the balance, the sensing plate rotating around the rotating connection position and driving the rotating valve core to rotate, the rotating valve core reducing the water flow at the communication position between the water cooling circulation pipeline and the water supply pipe, the shell of the rotating valve body being provided with a connecting hole, the outer periphery of the rotating valve core being provided with a baffle, the baffle being slidably and sealingly connected to the inner periphery of the shell, the baffle being capable of adjusting the opening size of the connecting hole, the water flow being positively correlated with the opening size of the connecting hole, air inlets and air outlets being arranged on the side walls of the power distribution cabinet body, the air inlets and the air outlets being communicated with the first heat dissipation fin, cooling boxes and heat dissipation fans being arranged at the positions of the air inlets and the air outlets, the cooling boxes being communicated with the water cooling circulation pipeline, the heat dissipation fans being capable of blowing air to the cooling boxes, partition plates being arranged at positions close to the air inlets and the air outlets inside the power distribution cabinet body, dust filters and drying agents being arranged on the air inlets and the air outlets. ​ ​ ​ ​ ​ 2. The heat dissipating structure of the power distribution cabinet according to claim 1, wherein, ​ 3. The heat dissipating structure of the power distribution cabinet according to claim 1, wherein, ​ 4. The heat dissipating structure of the power distribution cabinet according to claim 1, wherein, ​ 5. The heat dissipating structure of the power distribution cabinet according to claim 1, wherein, ​

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