Low-voltage wattmeter box for smart power grid

Abstract

The invention relates to a low-voltage power meter box for an intelligent power grid, which is applied to the technical field of low-voltage power meter boxes and comprises a box body and an intelligent regulator, the bottom of the box body is communicated with a threading cylinder and an air guide cylinder, and heat dissipation through grooves are formed in the two sides of the box body; a sealing baffle and a bearing plate are arranged at the top and the bottom of the air guide barrel respectively, and a top air opening is formed in the top of the box body; a transverse air channel is transversely installed between the heat dissipation through grooves in the two sides of the inner cavity of the box body. By the adoption of the structure, the inner cavity of the box body can be well cooled through the environment temperature at the bottom, wild animals are not prone to entering the box body, the heat dissipation through grooves can be synchronously controlled to be closed in heavy rain weather, a top wind opening in the top can be synchronously controlled to be opened in heavy rain weather, and the heat dissipation effect of the box body is improved. And the intelligent regulator can automatically adjust the wind direction of the inner cavity of the box body, so that the heat dissipation effect of the box body is further improved.

Description

Technical Field

[0001] The present invention relates to an electric power meter box, in particular to a low-voltage electric power meter box for a smart grid applied in the technical field of low-voltage electric power meter boxes. Background Art

[0002] A low-voltage power meter box refers to an electric box with a voltage below 1000 volts (or equal to or less than 380V / 220V line voltage). It is an electrical device used to distribute, control and protect electric energy. It is usually used at the end of the power distribution system to distribute electric energy to various electrical equipment. When the low-voltage power meter box is installed outdoors, the bottom of the low-voltage power meter box will be fixed with cement to achieve a better fixing effect, and a heat dissipation slot will be opened on the side of the low-voltage power meter box to dissipate the heat generated during the operation of the equipment in the low-voltage power meter box.

[0003] The patent with publication number CN208369028U discloses a high and low voltage power switch cabinet, including a cabinet body, one side of the cabinet body is provided with a plurality of evenly arranged heat dissipation holes, one side of the top of the cabinet body is provided with a water tank, the other side of the top of the cabinet body is provided with a water pump, a control panel is provided at the bottom of the cabinet door surface, a vent is provided on the other side of the cabinet body, a blowing device is provided at a position corresponding to the vent on one side of the inner wall of the cabinet body, and a U-shaped water cooling pipe is provided on one side of the blowing device; the heat in the cabinet body can be blown out of the cabinet body through the heat dissipation holes and the blowing device, so as to realize the heat dissipation of the power cabinet, and the water tank, water pump and U-shaped water cooling pipe can cooperate with the blowing device to cool the inside of the cabinet body, so as to further enhance the cooling and heat dissipation of the power cabinet.

[0004] When the above scheme is implemented, heat dissipation holes are opened on the side. When used in outdoor environments, there is a risk that small animals such as mice enter the cabinet through the heat dissipation holes and bite or damage the electrical equipment in the cabinet. When it rains, rainwater will also enter the cabinet through the heat dissipation holes, causing water to enter the cabinet. If the heat dissipation holes are designed to be small, the heat dissipation effect will be poor, affecting the normal operation of the electrical equipment in the cabinet. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that when used in an outdoor environment, small animals such as mice may enter the cabinet through the heat dissipation holes and bite and damage the electrical equipment in the cabinet. In rainy weather, rainwater may also enter the cabinet through the heat dissipation holes, causing water to enter the cabinet. If the heat dissipation holes are designed to be small, the heat dissipation effect will be poor, affecting the normal operation of the electrical equipment in the cabinet.

[0006] In order to solve the above problems, the present invention provides a low-voltage electric power meter box for a smart grid, comprising a box body, a rainproof top cover is arranged on the top of the box body, a threading barrel and an air guide barrel are respectively connected to the bottom of the box body, and heat dissipation grooves are arranged on both sides of the box body;

[0007] A baffle plate and a bearing plate are respectively arranged at the top and bottom of the air guide tube, and the baffle plate and the bearing plate are connected in series through a guide rod penetrating the bottom of the box body. A pressure sensor 1 is installed on the baffle plate, and a reset spring is installed between the bottom of the inner cavity of the box body and the baffle plate. The outer wall of the box body is located below the heat dissipation groove and is vertically slidably connected with a bearing box, and the inner wall of the box body is vertically slidably connected with a plurality of baffle plates at positions corresponding to the heat dissipation groove. The bottom of the baffle plate is fixed to the bearing box through a slider, and a reset spring and a pressure sensor 2 are installed at the bottom of the slider. A top air outlet is opened on the top of the box body, and a top block is arranged below the top air outlet, and the top block is linked to the baffle plate through a connecting rod 1;

[0008] The inner cavity of the box body is located between the heat dissipation grooves on both sides, and a transverse air duct is installed horizontally. The bottom of the transverse air duct is connected to the top of the air guide tube through the air duct, and the top of the transverse air duct is connected to a vertical air duct arranged vertically. A circulation fan 1 is arranged at the connection between the inner cavity of the transverse air duct and the vertical air duct. A deflection driving member is installed at one end of the circulation fan 1 for driving the circulation fan 1 to deflect. A lower temperature sensor is installed in the inner cavity of the box body;

[0009] An intelligent controller and a buzzer are installed in the inner cavity of the box. A biological alarm module, a thermal analysis module and a heat dissipation control module are arranged on the intelligent controller. The biological alarm module is electrically connected to the thermal analysis module, pressure sensor 1, pressure sensor 2 and the buzzer respectively. The thermal analysis module is electrically connected to the heat dissipation control module and the lower temperature sensor respectively. The heat dissipation control module is electrically connected to the circulation fan 1 and the deflection drive component respectively.

[0010] In the above-mentioned low-voltage electricity meter box for smart grid, the bottom ambient temperature can be used to cool the inner cavity of the box to a good extent, and wild animals are not easy to enter the box. In addition, the heat dissipation slots can be closed and the top vents can be opened synchronously in rainy weather to improve the autonomous heat dissipation adjustment ability of the box, and the intelligent regulator can automatically adjust the wind direction of the inner cavity of the box to further improve the heat dissipation effect of the box.

[0011] As a further improvement of the present application, the carrier box has a top opening structure, a penetration hole is provided at the bottom of the carrier box, a plurality of heat dissipation slots are provided in parallel on each side, and a plurality of baffle plates and heat dissipation slots are provided correspondingly.

[0012] As a further improvement of the present application, a horizontal plate is fixed at the bottom of the connecting rod 1, and an insertion rod 1 vertically plugged with the horizontal plate is fixed at the top of the blocking plate, and the top of the insertion rod 1 is a T-shaped structure.

[0013] As a further improvement of the present application, a plurality of parallel air guide plates are hingedly connected at the inner wall of the box body corresponding to the heat dissipation grooves, and the other ends of the plurality of air guide plates are connected in series through connecting rod 2, and one side of connecting rod 2 is connected to a gear driving member through teeth, which is used to drive connecting rod 2 to move vertically through the ring gear at the output end of the gear driving member.

[0014] As another improvement of the present application, a second plug rod is vertically inserted on the horizontal plate, and the second plug rod is meshed with the output end of the gear driving component through teeth, so as to drive the second plug rod to move vertically through the gear ring at the output end of the gear driving component, and the heat dissipation control module is electrically connected to the gear driving component.

[0015] As another improved supplement of the present application, a rain sensor is installed on the top of the rainproof roof cover, a telescopic motor is arranged above the horizontal plate, the output end of the telescopic motor is fixed with a push plate arranged above the horizontal plate, and the thermal analysis module is electrically connected to the rain sensor and the telescopic motor respectively.

[0016] As another improved supplement of the present application, an upper temperature sensor and a second circulating fan are installed at the upper end of the inner cavity of the box, the thermal analysis module is electrically connected to the upper temperature sensor, and the heat dissipation control module is electrically connected to the second circulating fan.

[0017] As another improvement of the present application, a sealing ring is provided on the inner ring of the threading barrel, and the outer ring on the bottom of the box body is fixed to the installation surface by cement.

[0018] To summarize, the ambient temperature is utilized to cool down the inner cavity of the box, thus saving energy. The effect of gravity will cover the air duct and the heat dissipation slots to prevent wild animals from entering the box and reduce damage to the cables. In heavy rain, the rain will gradually fill the carrier box. The effect of gravity will drive the baffle plate to move down to seal the heat dissipation slots. The heat dissipation slots can be automatically adjusted and closed in heavy rain, and the top air vents can be opened simultaneously. When the heat dissipation slots are blocked in heavy rain, the box still has a good heat dissipation effect. It automatically adjusts according to the environment, thus avoiding the situation where the equipment cannot be automatically adjusted due to a control system failure, thereby improving the autonomous heat dissipation adjustment ability of the box. The intelligent controller set up can automatically adjust the different heat dissipation states of the box, so that it can be adjusted according to temperature adaptability, thereby improving the heat dissipation effect of the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the first and second implementation modes of the present application;

[0020] Figure 2 This is a schematic cross-sectional view of the bottom of the box body of the first and second embodiments of the present application;

[0021] Figure 3 Schematic cross-sectional view of the box body of the first and second embodiments of the present application;

[0022] Figure 4 Schematic diagram of the positions of the baffle plate and the wind guide plate of the first and second embodiments of the present application;

[0023] Figure 5 Schematic diagram of the gas wind direction after the heat dissipation slots are closed in the first and second embodiments of the present application;

[0024] Figure 6 This is a control principle block diagram of an intelligent controller according to the first embodiment of the present application;

[0025] Figure 7 Schematic diagram of the gas wind direction after the air guide plate is tilted in the first and second embodiments of the present application;

[0026] Figure 8 A schematic diagram of the gas wind direction after the telescopic motor is extended according to the first and second embodiments of the present application;

[0027] Fig. 9 This is a block diagram of the control principle of the intelligent controller of the second embodiment of the present application.

[0028] Description of the numbers in the figure:

[0029] 1. Box; 2. Heat dissipation groove; 3. Carrying box; 4. Rain cover; 5. Rain sensor; 6. Threading barrel; 7. Sealing ring; 8. Air guide tube; 9. Carrying plate; 10. Sealing plate; 11. Guide rod; 12. Pressure sensor 1; 13. Air duct; 14. Top air vent; 15. Intelligent controller; 16. Connecting rod 1; 17. Blocking plate; 18. Pressure sensor 2; 19. Air guide plate; 20. Connecting rod 2; 21. Top block; 22. Buzzer; 23. Horizontal air duct; 24. Circulating fan 1; 25. Lower temperature sensor; 26. Vertical air duct; 27. Telescopic motor; 28. Horizontal plate; 29. ​​Insert rod 1; 30. Gear drive; 31. Insert rod 2; 32. Deflection drive; 33. Upper temperature sensor; 34. Circulating fan 2. DETAILED DESCRIPTION

[0030] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0031] The first implementation method:

[0032] Figure 1-Figure 6A low-voltage electric power meter box for a smart grid is shown, comprising a box body 1, a rainproof top cover 4 is arranged on the top of the box body 1, a wire threading barrel 6 and an air guide barrel 8 are respectively connected to the bottom of the box body 1, heat dissipation grooves 2 are opened on both sides of the box body 1, the cable enters the box body 1 through the wire threading barrel 6, the heat in the box body 1 is dissipated through the heat dissipation grooves 2, and the outside wind can also enter the box body 1 through the heat dissipation grooves 2 on one side and be discharged through the heat dissipation grooves 2 on the other side, thereby improving the heat dissipation effect of the inner cavity of the box body 1. After the box body 1 is installed, usually in a hot weather environment such as summer, the ambient temperature at the bottom of the box body 1 will be lower than the temperature at other positions. Therefore, the air guide barrel 8 can guide the low-temperature air to the inner cavity of the box body 1, and the ambient temperature is used to better cool the inner cavity of the box body 1, thereby saving energy.

[0033] It is worth mentioning that see Figure 2 and Figure 3 A baffle plate 10 and a bearing plate 9 are respectively arranged at the top and bottom of the air guide tube 8. The baffle plate 10 and the bearing plate 9 are connected in series through a guide rod 11 that passes through the bottom of the box body 1. A pressure sensor 12 is installed on the baffle plate 10. A return spring is installed between the baffle plate 10 and the bottom of the inner cavity of the box body 1. When small animals such as mice want to enter the inner cavity of the box body 1 through the air guide tube 8, they will first climb onto the bearing plate 9, and use the effect of gravity to drive the baffle plate 10 to move down to cover the top of the air guide tube 8, so as to prevent wild animals from entering the box body 1 through the air guide tube 8 and reduce their damage to the cables. In addition, the outer wall of the box body 1 is located below the heat dissipation groove 2 and is vertically slidably connected to a bearing box 3. The inner wall of the box body 1 is vertically slidably connected to a plurality of baffle plates 17 at the corresponding positions of the heat dissipation groove 2, and the bottom of the baffle plate 17 is fixed to the bearing box 3 through a slider. The bottom of the slider is provided with a return spring and a pressure sensor 18, a top air vent 14 is provided on the top of the box body 1, and a top stopper 21 is provided below the top air vent 14, and the top stopper 21 is linked with the baffle plate 17 through a connecting rod 16. When the small animal wants to enter the inner cavity of the box body 1 through the heat dissipation groove 2, it will first climb onto the carrier box 3, and use the effect of gravity to drive the baffle plate 17 to move downward, and the downward baffle plate 17 will block the heat dissipation groove 2, thereby preventing the small animal from entering the inner cavity of the box body 1 through the heat dissipation groove 2, and the downward baffle plate 17 will drive the top top stopper 21 to move downward through the connecting rod 16, thereby opening the top air vent 14, so that cold air enters the inner cavity of the box body 1 through the air guide tube 8 and is discharged through the top air vent 14. When the heat dissipation groove 2 is blocked, the box body 1 still has a good heat dissipation effect.

[0034] In addition, in order to reduce the amount of rainwater entering the box body 1 through the heat dissipation slot 2, in heavy rain weather, rainwater will gradually fill up the carrier box 3, increasing the weight of the carrier box 3, and utilizing the effect of gravity to drive the baffle plate 17 to move down to block the heat dissipation slot 2. In heavy rain weather, the heat dissipation slot 2 can be automatically adjusted to be closed, reducing the amount of rainwater entering the box body 1, improving environmental adaptability, and synchronously controlling the top air vent 14 to open, so that cold air enters the inner cavity of the box body 1 through the air guide tube 8 and is discharged through the top air vent 14. In heavy rain weather, when the heat dissipation slot 2 is blocked, the box body 1 still has a good heat dissipation effect, and automatically adjusts according to the environment, avoiding the situation where the equipment cannot be automatically adjusted due to a control system failure, and improving the autonomous heat dissipation adjustment capability of the box body 1.

[0035] In this implementation, see Figure 3-Figure 5 The inner cavity of the box body 1 is located between the heat dissipation slots 2 on both sides and is laterally installed with a transverse air duct 23. The bottom of the transverse air duct 23 is connected to the top of the air guide tube 8 through the air duct 13. The top of the transverse air duct 23 is connected with a vertical air duct 26 arranged vertically. A circulation fan 24 is arranged at the connection between the inner cavity of the transverse air duct 23 and the vertical air duct 26. A deflection driving member 32 is installed at one end of the circulation fan 24 for driving the circulation fan 24 to deflect. A lower temperature sensor 25 is installed in the inner cavity of the box body 1. The wind entering the heat dissipation slot 2 can be quickly discharged from another heat dissipation slot 2 through the transverse air duct 23. Figure 3 As shown, the hot air in the inner cavity of the box body 1 is quickly taken out by using the pressure difference, and the cold air at the bottom is quickly guided to the inner cavity of the box body 1 by using the air guide tube 8. According to the temperature of the inner cavity of the box body 1, the circulation fan 24 is controlled to work and the heat dissipation efficiency is adjusted. In heavy rainy weather, after the heat dissipation slot 2 is closed, Figure 5 As shown, by controlling the deflection drive member 32 to work, the circulation fan 24 can be controlled to deflect toward the vertical air duct 26, so that the cold air entering through the air guide tube 8 can be transferred to the top of the box body 1, and the wind direction of the inner cavity of the box body 1 can be adjusted and discharged through the top air vent 14 opened at the top, thereby improving the heat dissipation effect of the inner cavity of the box body 1.

[0036] It is worth mentioning that the inner cavity of the box body 1 is installed with an intelligent controller 15 and a buzzer 22. The intelligent controller 15 is provided with a biological alarm module, a thermal analysis module and a heat dissipation control module. The biological alarm module is electrically connected to the thermal analysis module, the pressure sensor 12, the pressure sensor 2 18 and the buzzer 22 respectively. The thermal analysis module is electrically connected to the heat dissipation control module and the lower temperature sensor 25 respectively. The heat dissipation control module is electrically connected to the circulation fan 1 24 and the deflection drive member 32 respectively. When the small animal wants to enter the inner cavity of the box body 1 through the air guide tube 8 or the heat dissipation groove 2, it will climb onto the corresponding carrier plate 9 or the carrier box 3, triggering the corresponding pressure sensor 12 and the pressure sensor 2 18. After receiving the pressure signal sent by the pressure sensor 12 and the pressure sensor 2 18, the biological alarm module sends a signal to the buzzer 22. The buzzer 22 emits a corresponding alarm sound to scare away the small animals so that they dare not approach the box 1, and after the biological alarm module receives the pressure signal sent by the pressure sensor 218, it feeds back to the thermal analysis module. The thermal analysis module determines that the heat dissipation slot 2 is in a closed state. At this time, the thermal analysis module sends a heat dissipation enhancement signal to the heat dissipation control module. The heat dissipation control module controls the deflection drive member 32 to work to direct the circulation fan 24 toward the vertical air duct 26, and controls the circulation fan 24 to work, quickly guide the cold air to the top of the box 1, and discharge it through the top air vent 14; during normal operation, the thermal analysis module receives the inner cavity temperature signal of the box 1 fed back by the lower temperature sensor 25, determines the inner cavity temperature of the box 1, and controls the circulation fan 24 to work, improves air circulation, and improves the heat dissipation effect of the box 1.

[0037] In addition, the carrier box 3 is a top opening structure, and the bottom of the carrier box 3 is provided with a penetration hole. When rainwater enters the carrier box 3, the rainwater can flow out through the penetration hole after becoming smaller, so that the carrier box 3 can automatically reset. A plurality of heat dissipation grooves 2 are arranged in parallel on each side, and a plurality of baffle plates 17 are arranged corresponding to the heat dissipation grooves 2. When the baffle plate 17 moves down, the heat dissipation grooves 2 on the side can be completely blocked. The inner ring of the threading barrel 6 is provided with a sealing ring 7. After the cable is inserted into the threading barrel 6, the cable gap is blocked by the inflatable sealing ring 7 to prevent small animals from entering the box body 1 through the cable gap. The bottom outer ring of the box body 1 is fixed to the installation surface by cement, so as to improve the stability of the installation of the box body 1. At this time, in hot weather such as summer, the air at the bottom of the box body 1 will be lower than the ground temperature, so it is convenient to guide the cold air into the inner cavity of the box body 1 through the air guide tube 8.

[0038] The second implementation method:

[0039] Figure 4 and Figure 7-Figure 9A low-voltage electricity meter box for a smart grid is shown. Different from the first embodiment, a horizontal plate 28 is fixed to the bottom of the connecting rod 16, and a plug rod 29 vertically plugged with the horizontal plate 28 is fixed to the top of the blocking plate 17. The top of the plug rod 29 is a T-shaped structure. When the blocking plate 17 moves downward, the plug rod 29 is driven to move downward, and the connecting rod 16 and the top block 21 are driven to move downward synchronously through the horizontal plate 28, so as to facilitate the control of the top block 21 to move downward synchronously during the blocking process of the blocking plate 17 moving downward.

[0040] It is worth mentioning that see Figure 4 A plurality of parallel air guide plates 19 are hingedly connected to the inner wall of the box body 1 at the corresponding positions of the heat dissipation groove 2. The other ends of the plurality of air guide plates 19 are connected in series through the connecting rod 20. One side of the connecting rod 20 is connected to a gear driving member 30 through teeth, which is used to drive the connecting rod 20 to move vertically through the gear ring at the output end of the gear driving member 30. By controlling the plurality of air guide plates 19 to tilt upward at the same time, the wind entering through the heat dissipation groove 2 can be guided upward and discharged through the top air outlet 14, so that it can achieve a better air circulation effect in the inner cavity of the box body 1, thereby improving the heat dissipation effect. By controlling the gear driving member 30 to work, the gear ring at the output end of the gear driving member 30 meshes with the connecting rod 20 and drives the connecting rod 20 to move upward, thereby controlling the inclination of the plurality of air guide plates 19.

[0041] In addition, a second plug rod 31 is vertically inserted on the horizontal plate 28, and the second plug rod 31 is meshed with the output end of the gear driving member 30 through teeth, and is used to drive the second plug rod 31 to move vertically through the ring gear at the output end of the gear driving member 30. The heat dissipation control module is electrically connected to the gear driving member 30, and the heat dissipation control module can control the operation of the gear driving member 30. When the gear driving member 30 controls the tilt of the air guide plate 19, it will mesh with the second plug rod 31 to control the second plug rod 31 to move downward, thereby synchronously driving the horizontal plate 28 and the connecting rod 1 16 to move downward, opening the top air outlet 14, and being able to synchronously control the wind entering the heat dissipation slot 2 to be guided to the entire inner cavity of the box body 1, and discharged through the top air outlet 14 for circulating heat dissipation.

[0042] In addition, a rain sensor 5 is installed on the top of the rainproof top cover 4, and a telescopic motor 27 is arranged above the horizontal plate 28. The output end of the telescopic motor 27 is fixed with a push plate arranged above the horizontal plate 28. The operation of the horizontal plate 28 drives the push plate to move downward, and can synchronously push the insertion rod 1 29, the insertion rod 2 31 and the horizontal plate 28 to move downward. The thermal analysis module is electrically connected to the rain sensor 5 and the telescopic motor 27 respectively. The rain sensor 5 can detect the rainfall in the external environment and feed it back to the thermal analysis module. When the thermal analysis module determines that the external rainfall exceeds the rainfall threshold (the thermal analysis module is preset with the maximum rainfall when rainwater enters the inner cavity of the box body 1 through the heat dissipation groove 2), the telescopic motor 27 will be controlled to work, and the heat dissipation control module will send a heat dissipation enhancement signal. The heat dissipation control module controls the deflection drive member 32 to work to turn the circulation fan 1 24 toward the vertical air duct 26, and controls the circulation fan 1 24 to work. Figure 8 As shown, the cold air is quickly guided to the top of the box body 1 and discharged through the top air vent 14. In heavy rain, the heat dissipation groove 2 is automatically controlled to be blocked, and the heat dissipation effect of the inner cavity of the box body 1 is simultaneously improved.

[0043] In addition, an upper temperature sensor 33 and a circulation fan 2 34 are installed at the upper end of the inner cavity of the box body 1, the heat analysis module is electrically connected to the upper temperature sensor 33, and the heat dissipation control module is electrically connected to the circulation fan 2 34. When the heat analysis module determines that the temperatures of the upper and lower ends of the inner cavity of the box body 1 are too high through the lower temperature sensor 25 and the upper temperature sensor 33, the heat analysis module sends an overall circulation heat dissipation signal to the heat dissipation control module. The heat dissipation control module controls the gear drive member 30 to adjust the air guide plate 19 to tilt upward, and open the top air outlet 14, controls the deflection drive member 32 to adjust the circulation fan 1 24 to face the vertical air duct 26, and controls the vertical air duct 26 and the circulation fan 2 34 to work. Figure 7 As shown, the flow direction of the gas entering through the heat dissipation groove 2 and the air guide tube 8 is adjusted, the external cold air is quickly guided to the entire cavity of the box 1, and discharged through the top air vent 14 at the top, thereby improving the overall circulation effect of the inner cavity of the box 1 and further improving its heat dissipation capacity.

[0044] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A low-voltage power meter box for smart grid, characterized in that: It comprises a box body (1), the top of the box body (1) is provided with a rainproof cover (4), the bottom of the box body (1) is respectively connected with a threading tube (6) and an air guide tube (8), and both sides of the box body (1) are provided with heat dissipation grooves (2); A baffle plate (10) and a bearing plate (9) are respectively arranged at the top and bottom of the air guide tube (8); the baffle plate (10) and the bearing plate (9) are connected in series via a guide rod (11) penetrating the bottom of the box body (1); a pressure sensor (12) is installed on the baffle plate (10); a return spring is installed between the baffle plate (10) and the bottom of the inner cavity of the box body (1); the outer wall of the box body (1) is located below the heat dissipation groove (2) and is vertically slidably connected to a bearing box (3); A plurality of baffle plates (17) are vertically slidably connected to the inner wall of the box body (1) at positions corresponding to the heat dissipation grooves (2); the bottom of the baffle plate (17) is fixed to the carrier box (3) via a slider; a return spring and a second pressure sensor (18) are installed at the bottom of the slider; a top air vent (14) is provided at the top of the box body (1); a top block (21) is provided below the top air vent (14); and the top block (21) is linked to the baffle plate (17) via a connecting rod (16); The inner cavity of the box body (1) is provided with a transverse air duct (23) disposed transversely between the heat dissipation grooves (2) on both sides; the bottom of the transverse air duct (23) is connected to the top of the air guide tube (8) through the air duct (13); the top of the transverse air duct (23) is connected to a vertical air duct (26) disposed vertically; a circulation fan (24) is disposed at the connection point between the inner cavity of the transverse air duct (23) and the vertical air duct (26); a deflection driving member (32) is disposed at one end of the circulation fan (24) for driving the circulation fan (24) to deflect; and a lower temperature sensor (25) is disposed in the inner cavity of the box body (1); The inner cavity of the housing (1) is equipped with an intelligent controller (15) and a buzzer (22); the intelligent controller (15) is provided with a biological alarm module, a heat analysis module and a heat dissipation control module; the biological alarm module is electrically connected to the heat analysis module, the pressure sensor 1 (12), the pressure sensor 2 (18) and the buzzer (22), respectively; the heat analysis module is electrically connected to the heat dissipation control module and the lower temperature sensor (25), respectively; and the heat dissipation control module is electrically connected to the circulation fan 1 (24) and the deflection drive member (32), respectively.

2. A low-voltage electric power meter box for smart grid according to claim 1, characterized in that: The carrier box (3) is a top-opening structure, a penetration hole is provided at the bottom of the carrier box (3), a plurality of heat dissipation slots (2) are provided in parallel on each side, and a plurality of baffle plates (17) are provided corresponding to the heat dissipation slots (2).

3. The low-voltage electric power meter box for smart grid according to claim 1, characterized in that: A horizontal plate (28) is fixed at the bottom of the connecting rod (16), and an insertion rod (29) vertically plugged into the horizontal plate (28) is fixed at the top of the blocking plate (17), wherein the top of the insertion rod (29) is a T-shaped structure.

4. A low-voltage electric power meter box for smart grid according to claim 3, characterized in that: A plurality of air guide plates (19) arranged in parallel are hingedly connected at the inner wall of the box body (1) and at the positions corresponding to the heat dissipation groove (2); the other ends of the plurality of air guide plates (19) are connected in series via a second connecting rod (20); one side of the second connecting rod (20) is connected via teeth to a gear drive member (30) for driving the second connecting rod (20) to move vertically via a gear ring at the output end of the gear drive member (30).

5. A low-voltage electric power meter box for smart grid according to claim 4, characterized in that: A second plug rod (31) is vertically inserted on the horizontal plate (28), and the second plug rod (31) is meshed with the output end of the gear driving member (30) through teeth, and is used to drive the second plug rod (31) to move vertically through the gear ring at the output end of the gear driving member (30), and the heat dissipation control module is electrically connected to the gear driving member (30).

6. A low-voltage electric power meter box for smart grid according to claim 5, characterized in that: A rain sensor (5) is installed on the top of the rainproof roof cover (4), a telescopic motor (27) is arranged above the transverse plate (28), a push plate arranged above the transverse plate (28) is fixed to the output end of the telescopic motor (27), and the thermal analysis module is electrically connected to the rain sensor (5) and the telescopic motor (27), respectively.

7. A low-voltage electric power meter box for smart grid according to claim 1 or 6, characterized in that: An upper temperature sensor (33) and a second circulating fan (34) are installed at the upper end of the inner cavity of the box body (1); the heat analysis module is electrically connected to the upper temperature sensor (33); and the heat dissipation control module is electrically connected to the second circulating fan (34).

8. The low-voltage electric power meter box for smart grid according to claim 1, characterized in that: The inner ring of the threading barrel (6) is provided with a sealing ring (7), and the outer ring of the bottom of the box body (1) is fixed to the installation surface by cement.

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