An outdoor safety distribution cabinet

Abstract

This invention belongs to the field of power distribution cabinet technology and discloses an outdoor safety power distribution cabinet, including a cabinet body and a cabinet cover installed on its top, and further including: a passive heat dissipation mechanism installed on the top of the cabinet cover; and an active heat dissipation mechanism connected to the bottom of the cabinet body. The above solution utilizes the fact that in windy and sandy weather, airflow carrying sand particles flows through the guide cover and the cabinet cover. Because the top of the guide cover and the cabinet cover are arc-shaped, the airflow velocity at the top of the cabinet cover, above the second filter screen, is relatively fast, creating negative pressure at the point where the airflow passes through the guide cover. This creates suction on the baffle plate and the gas inside the cabinet cover, causing the gas inside the cabinet to be discharged through the baffle plate and the second filter screen. Meanwhile, external gas slowly replenishes the cabinet body through the active heat dissipation mechanism, thereby cooling the electrical equipment inside the cabinet and ensuring the stability of the cooling effect of the passive heat dissipation mechanism on the electrical equipment inside the cabinet.

Description

Technical Field

[0001] This invention belongs to the field of power distribution cabinet technology, specifically an outdoor safety power distribution cabinet. Background Technology

[0002] An outdoor distribution cabinet is a power device designed specifically for outdoor environments, primarily used for power distribution, control, and circuit protection.

[0003] For distribution cabinets in special areas such as deserts, it is necessary to ensure good heat dissipation while also providing dust and sand protection. Operators in these areas typically add fans to the cabinet to improve heat dissipation and install filters at the ventilation holes to filter sand. However, deserts, due to their surface characteristics, drastic temperature variations, pressure gradients, topography, and the interaction of global air currents, experience extremely frequent wind activity. Therefore, when a distribution cabinet is in operation, continuous sandstorms can cause sand particles to accumulate outside the filters if the fans stop working, hindering air exchange between the inside and outside of the distribution cabinet and causing the internal temperature to rise, potentially affecting the electrical equipment. Conversely, if the fans are exhausting air, strong winds in the opposite direction can impede ventilation, preventing the timely removal of hot air and wasting energy. Therefore, to address these issues, an outdoor safety distribution cabinet is proposed. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides an outdoor safety distribution cabinet that solves the problem of increased internal temperature and low heat dissipation in distribution cabinets in desert areas due to wind and sand erosion.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an outdoor safety distribution cabinet, comprising a cabinet body and a cabinet cover installed on its top, and further comprising: a passive heat dissipation mechanism installed on the top of the cabinet cover; and an active heat dissipation mechanism connected to and disposed at the bottom of the cabinet body;

[0006] The passive heat dissipation mechanism includes a flow guide cover disposed on the top of the cabinet cover, with a gap between the bottom of the flow guide cover and the cabinet cover, an anemometer fixedly installed on the top of the flow guide cover, baffles symmetrically fixed to the top of the cabinet cover below the flow guide cover, the cross section of the two baffles in the frontal view is funnel-shaped, the cavity of the cabinet cover can communicate with the outside through the baffles, arc-shaped spring pieces are fixedly fixed to the top of the cabinet cover at equal intervals above the baffles, and a second filter screen is fixed to the top of the cabinet cover above the arc-shaped spring pieces, the arc-shaped spring pieces are used to support the bottom of the second filter screen;

[0007] The front view of the flow guide cover, the arc-shaped spring sheet, and the second filter screen is arched.

[0008] Preferably, the flow guide cover includes a cover body and a flow guide grid plate. The flow guide grid plate is fixedly installed at equal intervals on the top of the cabinet cover, and the cover body is fixedly installed above the flow guide grid plate. The portion between the flow guide grid plate and the top of the cabinet cover is divided into several through cavities by the flow guide grid plate.

[0009] Preferably, the cabinet cover is vertically and movably installed on the top of the cabinet body, and a drive mechanism for driving the cabinet cover upward is fixedly installed at the bottom of the cabinet body;

[0010] A filter screen and a grille are fixedly connected to the bottom of the cabinet cover. The outer periphery of the filter screen is initially located in the top cavity of the cabinet, and the grille is located on the outer periphery of the top of the cabinet with its bottom height lower than that of the filter screen.

[0011] Preferably, a U-shaped frame is fixedly installed on the top of the cabinet; a crossbar is fixedly connected to the lower surface of the arc-shaped spring sheet, and a magnetic component is hinged to the outer periphery of the crossbar. The bottom of the magnetic component is a magnet and can be attracted to the top of the U-shaped frame in the initial state.

[0012] When the cabinet cover moves upward, it can cause the U-shaped frame to detach from the magnetic component.

[0013] Preferably, the driving mechanism includes a limiting rod fixedly installed at the bottom of the cabinet cover. The limiting rod passes through the crossbeam portion at the top of the cabinet and extends into the cabinet cavity, where it is fixedly connected to a connecting plate. A lead screw motor is also fixedly connected to the bottom of the cabinet. The lead screw portion of the lead screw motor is vertically arranged and threadedly connected to the connecting plate. A temperature sensor is also provided on the inner wall of the cabinet.

[0014] Preferably, air vents are provided at the bottom of both sides of the cabinet, and auxiliary heat dissipation components are also provided on both sides of the cabinet;

[0015] The auxiliary heat dissipation component includes a connecting rod fixed to the bottom of the connecting plate. A grille combination baffle for sealing the air vents in the initial state is fixed to the bottom of the connecting rod. The upper part of the grille combination baffle is a sealing partition and the lower part is a grille. A second grille located outside the grille combination baffle is also fixed to the outside of the cabinet. A third filter screen is fixed to the lower part and outward side of the grille combination baffle.

[0016] Preferably, the active heat dissipation mechanism includes a support plate fixedly installed at the bottom of the cabinet, an air outlet on the support plate, a fan fixedly connected to the bottom of the support plate below the air outlet, and a pipe assembly fixedly connected to the bottom of the cabinet below the fan and communicating with the outside.

[0017] Preferably, the duct assembly includes a main duct installed at the bottom of the cabinet and extending to the ground. A spiral heat exchange duct is formed on the side wall of the main duct. A secondary duct is fixedly connected to the top of the main duct and communicates with the top of the spiral heat exchange duct. One end of the secondary duct extends to the outside of the cabinet and is fixedly connected to a filter plate. The bottom of the spiral heat exchange duct communicates with the central cavity at the bottom of the main duct. The central cavity at the top of the main duct can communicate with the cabinet cavity through a fan. Fins are also fixedly arranged in a ring array on the lower part of the outer periphery of the main duct.

[0018] The pipe assembly also includes a heat insulation sleeve that is fixedly fitted around the outer periphery of the main pipe and located below the cabinet and above the fins.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] The above solution utilizes the principle that during windy and sandy weather, airflow carrying sand particles flows through the guide cover and cabinet cover. Because the top of the guide cover and the cabinet cover are arc-shaped, the airflow velocity at the top of the cabinet cover, above the second filter, is relatively fast. This creates negative pressure in the airflow passing through the guide cover, which in turn creates suction on the baffle plate and the gas inside the cabinet cover. This allows the gas inside the cabinet to be discharged through the baffle plate and the second filter. Meanwhile, outside gas is slowly replenished to the cabinet through the active cooling mechanism, thereby cooling the electrical equipment inside the cabinet. Because the airflow velocity above the second filter is relatively fast and the top of the second filter is arc-shaped, the sand particles remaining on the second filter are carried by the airflow and blown out from the other end, preventing the accumulation of sand particles and reducing the heat dissipation effect. This further ensures the stability of the cooling effect of the passive cooling mechanism on the electrical equipment inside the cabinet.

[0021] When the wind speed is low, the above solution will drive the cabinet cover to connect the top of the cabinet with the outside. At this time, the filter screen will isolate the external wind and sand from the cabinet cavity, and the grille will prevent rainwater from entering the cabinet through the filter screen. The drive mechanism will also drive the auxiliary heat dissipation components to move upward with the cabinet cover, so that the air vents on the side of the cabinet can connect with the outside, which improves the heat dissipation effect of the device under natural conditions and saves electricity.

[0022] The above solution works by detecting when the temperature sensor detects that the internal temperature of the cabinet exceeds the set temperature when the cabinet cover is raised. At this time, the fan will run, and the outside air will be filtered by the filter plate and enter the spiral heat exchange duct through the secondary pipe. Since the soil temperature is low underground, the temperature of the hot air in the spiral heat exchange duct will be reduced after heat conduction by the fins and the main pipe and enter the bottom of the main pipe. Finally, the fan will draw the cooler air from the bottom of the main pipe upward into the cabinet to cool the internal electrical components, saving electricity and improving the cooling effect. Attached Figure Description

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a frontal perspective view;

[0025] Figure 3 This is a bottom view of the cabinet cover structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the front cross-sectional structure of the cabinet cover of the present invention;

[0027] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0028] Figure 6 This is a schematic diagram of the internal structure of the cabinet of the present invention;

[0029] Figure 7 This is a schematic diagram of the front cross-sectional structure of the cabinet of the present invention;

[0030] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0031] Figure 9 for Figure 7 Enlarged view of point C in the middle;

[0032] Figure 10 This is a schematic diagram of the active heat dissipation mechanism of the present invention.

[0033] In the diagram: 1. Cabinet body; 11. Cabinet cover; 111. Filter screen component one; 112. Grille one; 12. U-shaped frame; 2. Passive heat dissipation mechanism; 21. Air guide cover; 211. Cover body; 212. Air guide grille; 22. Anemometer; 23. Baffle plate; 24. Filter screen two; 25. Arc-shaped spring; 251. Crossbar; 252. Magnetic component; 3. Drive mechanism; 31. Limiting rod; 32. Connecting plate; 33. Wire 34. Motor; 4. Temperature sensor; 5. Auxiliary heat dissipation assembly; 6. Connecting rod; 7. Grille combination baffle; 8. Filter screen three; 9. Grille two; 10. Active heat dissipation mechanism; 11. Support plate; 12. Air outlet; 13. Fan; 14. Pipe assembly; 15. Main pipe; 16. Secondary pipe; 17. Filter plate; 18. Spiral heat exchange air duct; 19. Fins; 20. Insulation jacket. Detailed Implementation

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] like Figures 1 to 10 As shown, the present invention provides an outdoor safety distribution cabinet, including a cabinet body 1 and a cabinet cover 11 installed on its top, and further including: a passive heat dissipation mechanism 2, which is installed on the top of the cabinet cover 11; and an active heat dissipation mechanism 5, which is connected to and disposed at the bottom of the cabinet body 1;

[0036] The passive heat dissipation mechanism 2 includes a flow guide cover 21 disposed on the top of the cabinet cover 11. A gap is left between the bottom of the flow guide cover 21 and the cabinet cover 11. An anemometer 22 is fixedly installed on the top of the flow guide cover 21. Baffles 23 located below the flow guide cover 21 are symmetrically fixed to the top of the cabinet cover 11. The cross-section of the two baffles 23 in the front view is funnel-shaped. The cavity of the cabinet cover 11 can communicate with the outside through the baffles 23. Arc-shaped spring pieces 25 located above the baffles 23 are fixedly fixed at equal intervals on the top of the cabinet cover 11. A second filter screen 24 located above the arc-shaped spring pieces 25 is fixedly fixed to the top of the cabinet cover 11. The arc-shaped spring pieces 25 are used to support the bottom of the second filter screen 24. The front view cross-section of the flow guide cover 21, the arc-shaped spring pieces 25 and the second filter screen 24 is arched.

[0037] Using the above scheme, during sandstorm weather, the airflow will carry sand particles through the guide cover 21 and the cabinet cover 11. Since the top of the guide cover 21 and the cabinet cover 11 are arc-shaped, the airflow velocity at the top of the cabinet cover 11, above the filter screen 24, is relatively fast. This causes the airflow passing through the guide cover 21 to generate negative pressure, thereby creating suction on the baffle plate 23 and the gas inside the cabinet cover 11. This allows the gas inside the cabinet 1 to be discharged through the baffle plate 23 and the filter screen 24, while the outside gas will slowly replenish the cabinet 1 through the active heat dissipation mechanism 5, thereby cooling the electrical equipment inside the cabinet 1. Since the airflow velocity above the filter screen 24 is relatively fast and the top of the filter screen 24 is arc-shaped, the sand particles remaining on the filter screen 24 will be carried by the airflow and blown out from the other end, avoiding the accumulation of sand particles and reducing the heat dissipation effect. This further ensures the stability of the cooling effect of the passive heat dissipation mechanism 2 on the electrical equipment inside the cabinet 1.

[0038] It is worth noting that operators can also keep the gas inside cabinet 1 dry by placing a desiccant inside cabinet 1.

[0039] like Figures 1-6 As shown, the flow guide cover 21 includes a cover body 211 and a flow guide grid 212. The flow guide grid 212 is fixedly installed at equal intervals on the top of the cabinet cover 11, and the cover body 211 is fixedly installed above the flow guide grid 212.

[0040] The portion between the flow guide plate 212 and the top of the cabinet cover 11 is divided into several through cavities by the flow guide plate 212;

[0041] By adopting the above scheme, the cover 211 is divided into several through cavities by the flow guide plate 212, which can ensure the stability of the airflow through the flow guide cover 21, so as to maintain a stable negative pressure state at the baffle plate 23 and avoid the airflow from generating vortices above the filter screen 24.

[0042] like Figure 1-Figure 4 and Figure 8 As shown, the cabinet cover 11 is vertically and movably installed on the top of the cabinet body 1, and a drive mechanism 3 for driving the cabinet cover 11 to move upward is fixedly installed at the bottom of the cabinet body 1.

[0043] A filter element 111 and a grille 112 are fixedly connected to the bottom of the cabinet cover 11. The outer periphery of the filter element 111 is initially located in the top cavity of the cabinet body 1, and the grille 112 is located on the outer periphery of the top of the cabinet body 1 with its bottom height lower than the height of the filter element 111.

[0044] A U-shaped frame 12 is fixedly installed on the top of the cabinet 1; a crossbar 251 is fixedly connected to the lower surface of the arc-shaped spring piece 25, and a magnetic component 252 is hinged to the outer periphery of the crossbar 251. The bottom of the magnetic component 252 is a magnet and can be attracted to the top of the U-shaped frame 12 in the initial state.

[0045] When the cabinet cover 11 moves upward, it can cause the U-shaped frame 12 to detach from the magnetic component 252;

[0046] Using the above scheme, when the anemometer 22 detects a decrease in wind force, the drive mechanism 3 drives the cabinet cover 11 to move upward, which in turn drives the passive heat dissipation mechanism 2 to move upward as a whole. At this time, the hot airflow inside the cabinet 1 can be discharged to the outside through the filter screen 111.

[0047] Meanwhile, as the cabinet cover 11 moves upward, the magnetic component 252 is attracted by the U-shaped frame 12. During the upward movement of the arc-shaped spring 25, it will be pulled and bend, causing the middle of the filter screen 24 to collapse. When the arc-shaped spring 25 can no longer bend, it will force the crossbar 251 to drive the magnetic component 252 upward and detach it from the U-shaped frame 12. At this time, the arc-shaped spring 25 will rebound and shake off and discharge the small amount of sand particles remaining on the top of the filter screen 24, which can play the role of automatically cleaning the filter screen 24.

[0048] like Figures 2-4 and Figures 6-9 As shown, the drive mechanism 3 includes a limiting rod 31 fixedly installed at the bottom of the cabinet cover 11. The limiting rod 31 passes through the crossbeam part at the top of the cabinet 1 and extends into the cavity of the cabinet 1 and is fixedly connected to a connecting plate 32. A lead screw motor 33 is also fixedly connected to the bottom of the cabinet 1. The lead screw part of the lead screw motor 33 is vertically arranged and threadedly connected to the connecting plate 32. A temperature sensor 34 is also provided on the inner wall of the cabinet 1.

[0049] Air vents are provided at the bottom of both sides of the cabinet 1, and auxiliary heat dissipation components 4 are also provided on both sides of the cabinet 1.

[0050] The auxiliary heat dissipation component 4 includes a connecting rod 41 fixed to the bottom of the connecting plate 32. A grille combination baffle 42 for sealing the air vents in the initial state is fixed to the bottom of the connecting rod 41. The upper part of the grille combination baffle 42 is a sealing partition and the lower part is a grille. A second grille 43 located outside the grille combination baffle 42 is also fixed to the outside of the cabinet 1. A third filter screen 421 is fixed to the lower part of the grille combination baffle 42 and on the outward side.

[0051] Using the above scheme, when the anemometer 22 detects that the ambient wind force is small, the screw motor 33 will drive the connecting plate 32 and the limit rod 31 to move, and drive the cabinet cover 11 to move upward to connect the top of the cabinet 1 with the outside. At this time, the filter screen 111 will isolate the external wind and sand from the cavity of the cabinet 1. At the same time, the grille 112 can prevent rainwater from entering the cabinet 1 through the filter screen 111. The connecting plate 32 will also drive the auxiliary heat dissipation component 4 to move upward synchronously with the cabinet cover 11, so that the air vents on the side of the cabinet 1 can connect with the outside, which improves the heat dissipation effect of the device in natural state, and also saves electricity.

[0052] When the cabinet cover 11 is closed, the grille combination baffle 42 will also block the air holes to avoid affecting the operation of the passive heat dissipation mechanism 2 in windy and sandy weather.

[0053] like Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 10 As shown, the active heat dissipation mechanism 5 includes a support plate 51 fixedly installed at the bottom of the cabinet 1, an air outlet 52 is provided on the support plate 51, a fan 53 located below the air outlet 52 is fixedly connected to the bottom of the support plate 51, and a pipe assembly 54 located below the fan 53 and connected to the outside is fixedly connected to the bottom of the cabinet 1.

[0054] The duct assembly 54 includes a main duct 541 installed at the bottom of the cabinet 1 and extending to the ground. A spiral heat exchange duct 544 is provided on the side wall of the main duct 541. A secondary duct 542 is fixedly connected to the top of the main duct 541 and communicates with the top of the spiral heat exchange duct 544. One end of the secondary duct 542 extends to the outside of the cabinet 1 and is fixedly connected to a filter plate 543. The bottom of the spiral heat exchange duct 544 communicates with the central cavity at the bottom of the main duct 541. The central cavity at the top of the main duct 541 can communicate with the cavity of the cabinet 1 through a fan 53. Fins 545 are also fixedly connected in a ring array to the lower part of the outer periphery of the main duct 541.

[0055] The pipe assembly 54 also includes a heat insulation sleeve 546 that is fixedly sleeved on the outer periphery of the main pipe 541 and located below the cabinet 1 and above the fins 545;

[0056] Using the above scheme, when the temperature sensor 34 detects that the internal temperature of the cabinet 1 continues to exceed the set temperature when the cabinet cover 11 is raised, the fan 53 will run. The outside air is filtered by the filter plate 543 and enters the spiral heat exchange air duct 544 through the secondary pipe 542. Since the soil temperature is low underground, the temperature of the hot air in the spiral heat exchange air duct 544 will be reduced after the heat conduction of the fins 545 and the main pipe 541 and enter the bottom of the main pipe 541. Finally, the fan 53 will draw the lower temperature air from the bottom of the main pipe 541 upward into the cabinet 1 to cool the internal electrical appliances, saving electricity and improving the cooling effect.

[0057] It is worth noting that the heat insulation sleeve 546 can isolate the influence of excessively hot shallow soil on the airflow inside the spiral heat exchange duct 544.

[0058] Working principle and usage process of this invention:

[0059] During sandstorms, airflow carrying sand particles flows through the guide cover 21 and the cabinet cover 11. Since the top of the guide cover 21 and the cabinet cover 11 are arc-shaped, the airflow speed is faster at the top of the cabinet cover 11, above the filter screen 24, while the airflow speed is slower below the filter screen 24. At this time, the airflow passing through the guide cover 21 will generate negative pressure, which will generate suction on the baffle plate 23 and the gas inside the cabinet cover 11. This will cause the gas inside the cabinet 1 and the cabinet cover 11 to be discharged through the baffle plate 23 and the filter screen 24. Meanwhile, the outside gas will be slowly replenished to the cabinet 1 through the active heat dissipation mechanism 5, thereby cooling the electrical equipment inside the cabinet 1. Since the airflow speed above the filter screen 24 is faster and the top of the filter screen 24 is arc-shaped, the sand particles remaining on the filter screen 24 will be carried by the airflow and blown out from the other end, further ensuring the stability of the cooling effect of the passive heat dissipation mechanism 2 on the electrical equipment inside the cabinet 1.

[0060] When the anemometer 22 detects that the ambient wind force is low, the drive mechanism 3 will drive the cabinet cover 11 upward to connect the top of the cabinet 1 with the outside. At this time, the filter screen 111 will isolate the external wind and sand from the cavity of the cabinet 1. Meanwhile, the grille 112 can prevent rainwater from entering the cabinet 1 through the filter screen 111. The drive mechanism 3 will also drive the auxiliary heat dissipation component 4 to move upward synchronously with the cabinet cover 11, so that the air vents on the side of the cabinet 1 can connect with the outside, which improves the heat dissipation effect of the device under natural conditions and saves electricity.

[0061] When the cabinet cover 11 is raised, if the temperature sensor 34 detects that the internal temperature of the cabinet 1 continues to exceed the set temperature, the fan 53 will run. The outside air is filtered by the filter plate 543 and enters the spiral heat exchange duct 544 through the secondary pipe 542. Since the soil temperature is low underground, the temperature of the hot air in the spiral heat exchange duct 544 will be reduced after the heat conduction of the fins 545 and the main pipe 541 and enter the bottom of the main pipe 541. Finally, the fan 53 will draw the lower temperature air from the bottom of the main pipe 541 upward into the cabinet 1 to cool the internal electrical appliances, saving electricity and improving the cooling effect.

[0062] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0063] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An outdoor safety distribution cabinet, comprising a cabinet body (1) and a cabinet cover (11) mounted on its top, characterized in that, Also includes: Passive heat dissipation mechanism (2), which is installed on the top of the cabinet cover (11); An active heat dissipation mechanism (5) is connected to the bottom of the cabinet (1); The passive heat dissipation mechanism (2) includes a flow guide cover (21) set on the top of the cabinet cover (11). There is a gap between the bottom of the flow guide cover (21) and the cabinet cover (11). An anemometer (22) is fixedly installed on the top of the flow guide cover (21). A baffle plate (23) located below the flow guide cover (21) is symmetrically fixed to the top of the cabinet cover (11). The cross section of the two baffle plates (23) in the front view direction is funnel-shaped. The cavity of the cabinet cover (11) can communicate with the outside through the baffle plate (23). An arc-shaped spring piece (25) located above the baffle plate (23) is fixed at equal intervals on the top of the cabinet cover (11). A filter screen (24) located above the arc-shaped spring piece (25) is fixed to the top of the cabinet cover (11). The arc-shaped spring piece (25) is used to support the bottom of the filter screen (24). The front view of the flow guide cover (21), the arc-shaped spring sheet (25) and the filter screen (24) is arched; The cabinet cover (11) is vertically and movably installed on the top of the cabinet body (1), and a drive mechanism (3) for driving the cabinet cover (11) to move upward is fixedly installed at the bottom of the cabinet body (1). The bottom of the cabinet cover (11) is fixed with a filter screen (111) and a grille (112). The outer periphery of the filter screen (111) is initially located in the top cavity of the cabinet (1). The grille (112) is located on the outer periphery of the top of the cabinet (1) and its bottom height is lower than that of the filter screen (111). A U-shaped frame (12) is fixedly installed on the top of the cabinet (1); A crossbar (251) is fixed to the lower surface of the arc-shaped spring sheet (25), and a magnetic component (252) is hinged to the outer periphery of the crossbar (251). The bottom of the magnetic component (252) is a magnet and can be attracted to the top of the U-shaped frame (12) in the initial state. When the cabinet cover (11) moves upward, it can cause the U-shaped frame (12) to detach from the magnetic component (252); The active heat dissipation mechanism (5) includes a support plate (51) fixedly installed at the bottom of the cabinet (1), an air outlet (52) is provided on the support plate (51), a fan (53) is fixedly connected to the bottom of the support plate (51) below the air outlet (52), and a pipe assembly (54) is fixedly connected to the bottom of the cabinet (1) below the fan (53) and connected to the outside. The pipe assembly (54) includes a main pipe (541) installed at the bottom of the cabinet (1) and extending to the ground. A spiral heat exchange duct (544) is provided on the side wall of the main pipe (541). A secondary pipe (542) is fixedly connected to the top of the main pipe (541) and communicates with the top of the spiral heat exchange duct (544). One end of the secondary pipe (542) extends to the outside of the cabinet (1) and is fixedly connected with a filter plate (543). The bottom of the spiral heat exchange duct (544) communicates with the central cavity at the bottom of the main pipe (541). The central cavity at the top of the main pipe (541) can communicate with the cavity of the cabinet (1) through a fan (53). Fins (545) are also fixedly connected in a ring array to the lower part of the outer periphery of the main pipe (541). The pipe assembly (54) also includes a heat insulation sleeve (546) that is fixedly sleeved on the outer periphery of the main pipe (541) and located below the cabinet (1) and above the fins (545).

2. The outdoor safety distribution cabinet according to claim 1, characterized in that: The flow guide cover (21) includes a cover body (211) and a flow guide grid plate (212). The flow guide grid plate (212) is fixedly installed at equal intervals on the top of the cabinet cover (11), and the cover body (211) is fixedly installed above the flow guide grid plate (212). The portion between the flow guide plate (212) and the top of the cabinet cover (11) is divided into several through cavities by the flow guide plate (212).

3. The outdoor safety distribution cabinet according to claim 1, characterized in that: The drive mechanism (3) includes a limiting rod (31) fixedly installed at the bottom of the cabinet cover (11). The limiting rod (31) passes through the crossbeam part at the top of the cabinet body (1) and extends into the cavity of the cabinet body (1) and is fixedly connected to a connecting plate (32). A lead screw motor (33) is also fixedly connected to the bottom of the cabinet body (1). The lead screw part of the lead screw motor (33) is vertically arranged and threadedly connected to the connecting plate (32). A temperature sensor (34) is also provided on the inner wall of the cabinet body (1).

4. The outdoor safety distribution cabinet according to claim 1, characterized in that: Air holes are provided at the bottom of both sides of the cabinet (1), and auxiliary heat dissipation components (4) are also provided on both sides of the cabinet (1). The auxiliary heat dissipation component (4) includes a connecting rod (41) fixed to the bottom of the connecting plate (32). The bottom of the connecting rod (41) is fixed with a grid combination baffle (42) for sealing the air holes in the initial state. The upper part of the grid combination baffle (42) is a sealing partition and the lower part is a grid. The cabinet (1) is also fixed with a second grid (43) located outside the grid combination baffle (42). A filter screen three (421) is fixed to the lower part and the outward side of the grille assembly baffle (42).

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