A pressure relief and heat dissipation structure for switch cabinets

Abstract

The application discloses a pressure relief and heat dissipation structure for a switch cabinet, and relates to the technical field of switch cabinets.The pressure relief and heat dissipation structure comprises a fixed frame and a shell, a plurality of sealing windows for covering pressure relief channels are slidably installed on the fixed frame, and a reset assembly for pushing the sealing windows to reset is installed on the top surface of the sealing window; the bottom surface of the sealing window is connected with a first connecting frame through a first connecting shaft, a limiting assembly capable of locking the up-and-down moving position of the sealing window is installed on the first connecting frame; and a flow adjusting mechanism is arranged on the first connecting frame and used for automatically adjusting the flow of flowing cooling liquid.In the application, the automatic pressure relief mechanism can automatically cover or open the sealing window from the fixed frame, thereby ensuring that high-pressure air flow in the switch cabinet body is timely discharged, and the setting of the ratchet wheel and the pawl can provide support for the sealing window, so that the switch cabinet can provide support force in a rainy weather environment, and rainwater can be prevented from flowing into the interior of the switch cabinet.

Description

Technical Field

[0001] This invention belongs to the field of switchgear technology, specifically a pressure relief and heat dissipation structure for switchgear. Background Technology

[0002] During the operation of the switchgear, under conditions such as insulation aging, human error, or switchgear design defects, a short circuit fault may occur in the primary circuit, generating a short circuit current of tens of thousands of amperes. This short circuit current will instantly generate high-temperature and high-pressure gas. Due to the relatively narrow cabinet, if the fault gas cannot be effectively released in a short time, it will cause the switchgear to explode, causing serious damage to adjacent switchgear and personnel, and causing a major safety accident.

[0003] A pressure relief protection structure for switchgear, disclosed in CN220291463U, includes a switchgear body with a pressure relief box at its top. A pressure relief hole is formed through the top surface of the switchgear body, which is connected to the pressure relief box via the pressure relief hole. A pressure relief disc is movably installed inside the pressure relief hole, with a through hole on its end face. A through hole is formed on the surface of the switchgear body, and a connecting rod is inserted into the through hole. The pressure relief disc is sleeved on the outside of the connecting rod through the through hole. A mounting rod is located at the top inside the switchgear body, and a spring is mounted on its surface. The other end of the spring is fixed to the surface of the pressure relief disc. The coordinated use of the pressure relief box, pressure relief hole, through hole, connecting rod, pressure relief disc, mounting bracket, and spring facilitates pressure relief of the switchgear body, and this method is simple to operate.

[0004] Although the aforementioned patents are designed with automatic pressure relief mechanisms that can automatically open the pressure relief channel and discharge high-pressure airflow when the internal air pressure rises, thereby protecting the switchgear and its internal equipment from damage, these traditional switchgears have obvious shortcomings in dealing with severe weather conditions, especially rain and snow. Specifically, when rain or snow comes, the accumulation of rainwater or snow water can easily cause the pressure relief channel to open, which in turn leads to rainwater or snow water entering the interior of the switchgear, causing the equipment to become damp, short-circuited, or even damaged. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention proposes a pressure relief and heat dissipation structure for switch cabinets.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A pressure relief and heat dissipation structure for switch cabinet includes a fixed frame and a housing. Multiple sealing windows for covering the pressure relief channel are slidably installed on the fixed frame. A reset component for pushing the sealing window to reset is installed on the top surface of the sealing window.

[0008] The bottom surface of the sealing window is connected to a first connecting frame via a first connecting shaft. A limiting component capable of locking the sealing window in a vertical position is installed on the first connecting frame.

[0009] The flow regulation mechanism, located on the first connecting frame, is used to automatically regulate the flow rate of the coolant.

[0010] As a further preferred embodiment of this technical solution: the limiting component includes a rotatable transmission shaft and a first rotating shaft. A first transmission gear is fixedly installed on the transmission shaft, and a first rack that meshes with the first transmission gear is installed on the first connecting frame. A ratchet is also fixedly installed on the transmission shaft, and a pawl that is used in conjunction with the ratchet is fixedly installed on the first rotating shaft.

[0011] As a further preferred embodiment of this technical solution: the flow regulating mechanism includes an adapter sleeve and a second rack. A second isolation square tube is provided inside the adapter sleeve. A second rotating shaft is rotatably installed inside the second isolation square tube. A fourth transmission gear that meshes with the second rack is fixedly installed on the second rotating shaft. The second rack is connected to a first connecting frame through a transmission frame. A fixed baffle is also fixedly installed inside the adapter sleeve. A movable baffle is rotatably installed on the fixed baffle. The end of the movable baffle away from the fixed baffle is fixedly installed to the second rotating shaft. Both the fixed baffle and the movable baffle have through holes for coolant to pass through.

[0012] As a further preferred embodiment of this technical solution: the reset assembly includes a guide shaft fixedly installed on the top surface of the fixed frame, a second connecting frame slidably installed on the guide shaft, a second connecting shaft fixedly installed at the lower end of the second connecting frame, and the lower end of the second connecting shaft fixedly installed with the sealing window.

[0013] As a further preferred embodiment of this technical solution: a spiral spring is provided at the end of the drive shaft to rotate and reset the drive shaft.

[0014] As a further preferred embodiment of this technical solution: a cooler is provided on each side of the fixed frame, and the cooler is connected to the adapter sleeve through a pipe.

[0015] As a further preferred embodiment of this technical solution: an mounting plate is installed on the outer casing, a cooling fan assembly for heat dissipation is installed on the mounting plate, a condenser tube is installed on the inner side of the mounting plate, one end of the condenser tube is connected to the cooler, and the other end of the condenser tube is connected to the adapter sleeve.

[0016] As a further preferred embodiment of this technical solution: a water baffle is also installed inside the outer shell, and the water baffle is located inside the condenser tube. The water baffle is provided with a plurality of air inlets arranged in an array. Each air inlet is provided with a water baffle to prevent water droplets from passing through the air inlet. A waterproof and breathable membrane is provided on the inner side of the water baffle.

[0017] As a further preferred embodiment of this technical solution: a water storage box is installed at the lower end of the outer shell, a conveying pipe is connected through the water storage box, and a conveying pump is provided between the water storage box and the conveying pipe.

[0018] As a further preferred embodiment of this technical solution: the limiting component further includes a mini motor, the output end of which is fixedly mounted with a second transmission gear, the second transmission gear meshing with a third transmission gear, and the third transmission gear being fixedly mounted to the end of a first rotating shaft.

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

[0020] 1. In this invention, the automatic pressure relief mechanism enables the sealing window to automatically close or open from the fixed frame, ensuring that the high-pressure airflow inside the switch cabinet body is released in a timely manner. Furthermore, the ratchet and pawl provide support for the sealing window, enabling the switch cabinet to provide support in rainy weather conditions and preventing rainwater from entering the interior of the switch cabinet.

[0021] 2. In this invention, the design of the reset component enables the sealing window to automatically reset and re-close onto the fixed frame after the air pressure is released, maintaining a sealed state. The automatic depressurization and reset of the sealing window greatly improves the safety and stability of the switchgear.

[0022] 3. In this invention, the flow rate can be adjusted according to the opening degree of the pressure relief channel, thereby enhancing the cooling effect on the inside of the switch cabinet and quickly removing the heat inside the switch cabinet to prevent the equipment from overheating and being damaged.

[0023] 4. In this invention, a double-layer waterproofing measure of water-blocking canopy and waterproof and breathable membrane is adopted, which effectively prevents condensate from entering the switch cabinet and protects the dryness of the equipment. At the same time, the setting of water storage box and conveying pipe realizes the collection and discharge of condensate, avoiding increasing the burden on the switch cabinet. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention;

[0026] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 This is a partial three-dimensional structural diagram of the present invention. Figure 1 ;

[0029] Figure 6 This is a partial three-dimensional structural diagram of the present invention. Figure 2 ;

[0030] Figure 7 This is a partial three-dimensional structural diagram of the present invention. Figure 3 ;

[0031] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0032] Figure 9 for Figure 7 Enlarged view of point C in the middle;

[0033] Figure 10 for Figure 6 Enlarged view of point D;

[0034] Figure 11 This is a partial exploded view of the structure of the present invention.

[0035] Legend: 1. Switch cabinet body; 2. Automatic pressure relief mechanism; 21. Fixing frame; 22. Sealing window; 23. Connecting shaft No. 1; 24. Connecting bracket No. 1; 25. Reset assembly; 251. Connecting shaft No. 2; 252. Connecting bracket No. 2; 253. Guide shaft; 254. Reset spring; 26. Limiting assembly; 261. Rack No. 1; 262. Transmission gear No. 1; 263. Transmission shaft; 264. Ratchet; 265. Pawl; 266. Mini motor; 267. Transmission gear No. 2; 268. Transmission gear No. 3; 269. Rotating shaft No. 1; 27. Connecting shell; 28. 1. Scroll spring; 29. ​​Transmission frame; 210. No. 1 isolation square tube; 211. Fixed frame; 3. Dust cover; 4. Flow regulating mechanism; 41. Adapter sleeve; 42. Fixed baffle; 43. Movable baffle; 44. No. 2 isolation square tube; 45. No. 2 rack; 46. No. 4 transmission gear; 47. No. 2 rotating shaft; 5. Cooler; 6. Condenser pipe; 7. Outer shell; 8. Mounting plate; 9. Cooling fan assembly; 11. Heat dissipation channel; 12. Water storage box; 13. Delivery pump; 14. Delivery pipe; 15. Water baffle; 16. Air inlet; 17. Water baffle; 18. Waterproof and breathable membrane. Detailed Implementation

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1:

[0038] Please see Figures 1-11This application provides a pressure relief and heat dissipation structure for a switchgear, including a switchgear body 1 and a pressure relief and heat dissipation structure. The pressure relief and heat dissipation structure includes a dust cover 3 and an automatic pressure relief mechanism 2 installed inside the dust cover 3. The automatic pressure relief mechanism 2 includes a fixed frame 21 fixedly installed on the top wall of the switchgear body 1. Multiple sealing windows 22 are slidably connected to the fixed frame 21 to cover the fixed frame 21 and form a sealed space. A reset assembly 25 is installed above the sealing windows 22. The reset assembly 25 includes a second connecting shaft 251 fixedly installed on the top surface of the sealing window 22. A second connecting bracket 252 is fixedly installed at the upper end of the second connecting shaft 251, and a guide shaft 253 is fixedly installed at the upper end of the fixed frame 21. A return spring 254 is sleeved on the outer side of the guide shaft 253, and the return spring 254 is located between the second connecting frame 252 and the dust cover 3. After the sealing window 22 is opened, the spring force pushes the second connecting frame 252 to reset the sealing window 22 and close the fixing frame 21 again. A first connecting shaft 23 is fixedly installed on the bottom wall of each sealing window 22. A first connecting frame 24 is fixedly installed at the lower end of the first connecting shaft 23. A fixing frame 211 is fixedly installed on the inner wall of the switch cabinet body 1. A limit component 26 is installed on the fixing frame 211. The limit component 26 includes a transmission shaft 263 rotatably installed on the fixing frame 211. A first transmission gear 26 is fixedly installed on the transmission shaft 263. 2. The limiting component 26 further includes a first rack 261 fixedly mounted on the first connecting frame 24, and the first rack 261 meshes with and cooperates with the first transmission gear 262. A connecting shell 27 is fixedly mounted on the fixing frame 211. A spiral spring 28 is provided inside the connecting shell 27. One end of the spiral spring 28 is fixedly connected to the connecting shell 27, and the other end of the spiral spring 28 is fixedly connected to the transmission shaft 263. This allows the transmission shaft 263 to return to its original position after rotating a certain number of times, thanks to the elastic force of the spiral spring 28. A mini motor 266 is also fixedly mounted on the fixing frame 211. A second transmission gear 267 is fixedly mounted on the output end of the mini motor 266. A transmission gear 267 meshes with a third transmission gear 268. A first rotating shaft 269 is fixedly mounted on the third transmission gear 268, and the first rotating shaft 269 rotates on the mounting bracket 211. A pawl 265, which cooperates with a ratchet 264, is fixedly mounted on the first rotating shaft 269. A first isolation square tube 210 is installed through and fixedly mounted on the top wall of the switch cabinet body 1. A first rack 261 slides through the first isolation square tube 210 to extend the upward space of the first rack 261 and is in a sealed state to prevent rainwater from seeping in. It should be noted that an external rain shelter can be installed on the upper end of the switch cabinet body 1. Since the main content of the application is pressure relief and heat dissipation, the structure of the rain shelter is not shown in the figure.Furthermore, the canopy structure can block most of the rainwater, and the small amount of rainwater that drips can be blocked by the sealed window 22 and kept outside the switch cabinet body 1.

[0039] Specifically, when the air pressure inside the switch cabinet body 1 increases, and the heat dissipation channel 11 on the switch cabinet body 1 cannot expel the air pressure inside the switch cabinet body 1, the air pressure will push the sealing window 22 to rise, thereby opening the pressure relief channel on the fixed frame 21 and expelling the air pressure inside the switch cabinet body 1. During the rising process of the fixed frame 21, it can drive the first connecting shaft 23 to rise, and the first connecting shaft 23 drives the first connecting bracket 24 to rise. In this way, the air pressure inside the switch cabinet body 1 is released. The rising of the first connecting bracket 24 drives the first rack 261 to rise, and the rising of the first rack 261 drives the first transmission gear 262 to rotate. The rotation of the first transmission gear 262 drives the transmission shaft 263 to rotate, and the transmission shaft 263 drives the ratchet 264 to rotate. The pawl 265 allows the ratchet 264 to rotate in one direction, that is, it can only allow the first rack 261 to rise, thus achieving the position control of the sealing window 22 when it rises. The system is designed to limit the pressure release of the internal air pressure. Once the internal pressure is released, the mini motor 266 can be activated to drive the second transmission gear 267 to rotate. The second transmission gear 267 drives the third transmission gear 268 to rotate, which in turn drives the first rotating shaft 269 to rotate. The first rotating shaft 269 causes the pawl 265 to separate from the ratchet 264, and under the elastic force of the spiral spring 28, it drives the transmission shaft 263 to rotate in the opposite direction. This resets the sealing window 22 and blocks the pressure relief channel on the fixed frame 21. Then, the mini motor 266 drives the second transmission gear 267 to rotate in the opposite direction, causing the pawl 265 to lock onto the ratchet 264 again, limiting the further downward movement of the sealing window 22. In severe weather conditions, even if rainwater accumulates on the switch cabinet body 1, the sealing window 22 will not be crushed, preventing rainwater from entering the interior of the switch cabinet body 1 and damaging the equipment inside, thus ensuring the safety of the equipment inside the switch cabinet body 1.

[0040] Example 2:

[0041] Based on Embodiment 1, and with a flow regulating mechanism 4 installed on the top of the switch cabinet body 1, the flow regulating mechanism 4 includes a second rack 45 connected to a first connecting frame 24 via a transmission frame 29. A cooler 5 is installed on the top of the switch cabinet body 1, and the cooler 5 is connected to a connecting sleeve 41 via a pipe. A fixed baffle 42 is installed inside the connecting sleeve 41, and a movable baffle 43 is rotatably installed on the fixed baffle 42. Both the fixed baffle 42 and the movable baffle 43 have through holes that allow coolant to pass through. In the initial state, the through holes on the fixed baffle 42 and the movable baffle 43 are staggered, and a second isolation square tube 44 is fixedly installed inside the adapter sleeve 41. A second rotating shaft 47 is rotatably connected inside the second isolation square tube 44. A fourth transmission gear 46 that meshes with a second rack 45 is fixedly installed on the second rotating shaft 47. The second rack 45 passes through and slides inside the second isolation square tube 44, which can prevent the second rack 45, the fourth transmission gear 46 and the second rotating shaft 47 from directly contacting the coolant flowing out of the cooler 5, thus protecting the cleanliness of the coolant.

[0042] Specifically, when the first connecting frame 24 rises, that is, the pressure relief channel is opened, the first connecting frame 24 drives the transmission frame 29 to rise, the transmission frame 29 drives the second rack 45 to rise, the second rack 45 drives the fourth transmission gear 46 to rotate, the fourth transmission gear 46 drives the second rotating shaft 47 to rotate, and the second rotating shaft 47 drives the movable baffle 43 to rotate, so that the through hole on the movable baffle 43 is aligned with the through hole on the fixed baffle 42, which can increase the flow rate of coolant. At the same time, in conjunction with the cooling fan assembly 9, cool air is blown into the interior of the switch cabinet body 1, quickly cooling the interior of the switch cabinet body 1. The equipment is cooled down. This achieves the goal of increasing the flow rate of the coolant to enhance the cooling effect inside the switchgear body 1, solving the problem of temperature rise inside the switchgear body during depressurization in most switchgear systems. Increasing the flow rate of the coolant can remove the heat inside the switchgear body 1, preventing the risk of explosion. It should be noted that the coolant flow rate is not continuously increased because excessively high flow rates can cause excessive liquid pressure in the pipes, which may damage the pipes, pumps, valves, etc., and increase the energy loss of the cooler 5, resulting in a waste of resources.

[0043] Example 3:

[0044] Based on Embodiment 2, a housing 7 is fixedly installed on the side wall of the switch cabinet body 1. A mounting plate 8 is fixedly installed on the housing 7. A cooling fan assembly 9 is installed on the mounting plate 8. A condenser pipe 6 is installed on the inner side of the mounting plate 8, and the output end of the condenser pipe 6 is installed through the adapter sleeve 41. The input end of the condenser pipe 6 is connected to the cooler 5. A baffle plate 15 is installed on the inner side of the condenser pipe 6. An array of air inlets 16 is provided on the baffle plate 15. A water-blocking canopy 17 for blocking water droplets is installed on the outer side of each air inlet 16. The water-blocking canopy 17 is arranged in an inclined V-shape to facilitate water droplets flowing down from the water-blocking canopy 17. The water baffle 15 has a waterproof and breathable membrane 18 inside, which allows air to pass through and blocks water molecules. The mounting plate 8, the water baffle 15, and the waterproof and breathable membrane 18 are all installed inside the outer shell 7. A water storage box 12 is connected through the lower part of the outer shell 7. A one-way valve is installed between the water storage box 12 and the outer shell 7 to prevent water entering the water storage box 12 from flowing back into the outer shell 7. A delivery pipe 14 is installed through the water storage box 12. A delivery pump 13 is installed between the water storage box 12 and the delivery pipe 14 to discharge the liquid water inside the water storage box 12 from the delivery pipe 14.

[0045] Therefore, the existing technology of the cooling fan assembly 9 is used to blow external air into the switch cabinet body 1 for heat dissipation. The cooling effect is further enhanced by the coolant inside the condenser pipe 6. The condenser pipe 6 serves as the carrier of the coolant in the flow regulating mechanism 4. When the flow regulating mechanism 4 adjusts the coolant flow, it circulates through the condenser pipe 6. When there is a large temperature difference between the inside and outside of the condenser pipe 6, water droplets will form on the surface of the condenser pipe 6. If not treated, these droplets will be carried into the interior of the switch cabinet body 1, causing damage to the internal equipment. This structure can block most of the water droplets through the water baffle 17 and allow them to flow into the bottom of the outer shell 7 through the slope of the water baffle 17 and then into the water storage box 12 for collection. The liquid water inside the water storage box 12 can be pumped out through the delivery pipe 14. Even if a small amount of water passes through the water baffle 15, it can be blocked by the waterproof and breathable membrane 18, further protecting the dryness of the internal equipment of the switch cabinet body 1.

[0046] In summary, the automatic pressure relief mechanism 2, the flow regulation mechanism 4, and the condensation and heat dissipation system effectively achieve automatic pressure relief inside the switchgear. There is no need to worry about rainwater in rainy or snowy weather causing the sealing window 22 in the pressure relief channel to sink and fall, resulting in rainwater entering the switchgear. The flow regulation mechanism 4 can adjust the coolant flow rate while the pressure relief channel is open, improving the condensation and heat dissipation efficiency, and ensuring the dryness and safety of the switchgear.

[0047] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A pressure relief and heat dissipation structure for a switchgear, characterized by, It includes fixed frame (21) and shell (7), a plurality of sealing windows (22) for closing pressure relief channel are slidably installed on the fixed frame (21), reset assembly (25) for pushing sealing window (22) reset is installed on the top surface of sealing window (22); The bottom surface of the sealing window (22) is connected to a first connecting frame (24) through a first connecting shaft (23), and a limiting assembly (26) capable of locking the up-down movement position of the sealing window (22) is installed on the first connecting frame (24); The flow regulating mechanism (4) is provided on the first connecting frame (24) for automatically regulating the flow of the flowing cooling liquid; The limiting assembly (26) includes a transmission shaft (263) and a first rotating shaft (269), a first transmission gear (262) is fixedly installed on the transmission shaft (263), a first rack (261) is installed on the first connecting frame (24) and engages with the first transmission gear (262), and a ratchet wheel (264) is also fixedly installed on the transmission shaft (263), a pawl (265) is fixedly installed on the first rotating shaft (269) and matched with the ratchet wheel (264); The flow regulating mechanism (4) includes an adapter sleeve (41) and a second rack (45), a second isolation square tube (44) is provided inside the adapter sleeve (41), a second rotating shaft (47) is rotatably installed inside the second isolation square tube (44), a fourth transmission gear (46) is fixedly installed on the second rotating shaft (47) and connected with the second rack (45), the second rack (45) is connected with the first connecting frame (24) through a transmission frame (29), a fixed baffle (42) is also fixedly installed inside the adapter sleeve (41), a movable baffle (43) is rotatably installed on the fixed baffle (42), and the end of the movable baffle (43) away from the fixed baffle (42) is fixedly installed with the second rotating shaft (47), and the fixed baffle (42) and the movable baffle (43) are both provided with through holes for the cooling liquid to pass through; The reset assembly (25) includes a guide shaft (253) fixedly installed on the top surface of the fixed frame (21), a second connecting frame (252) is slidably installed on the guide shaft (253), a second connecting shaft (251) is fixedly installed at the lower end of the second connecting frame (252), and the lower end of the second connecting shaft (251) is fixedly installed with the sealing window (22); The end of the transmission shaft (263) is provided with a spiral spring (28) for rotating reset of the transmission shaft (263); The limiting assembly (26) further includes a mini motor (266), a second transmission gear (267) is fixedly installed at the output end of the mini motor (266), a third transmission gear (268) is engaged and connected with the second transmission gear (267), and the end of the third transmission gear (268) is fixedly installed with the first rotating shaft (269).

2. The pressure relief and heat dissipation structure for a switch cabinet according to claim 1, characterized in that, Two sides of the fixed frame (21) are respectively provided with a cooler (5), and the cooler (5) is connected with the adapter sleeve (41) through a pipeline.

3. The pressure relief and heat dissipation structure for a switch cabinet according to claim 2, characterized in that, The housing (7) is provided with a mounting plate (8), the mounting plate (8) is provided with a heat dissipation fan assembly (9) for heat dissipation, the inner side of the mounting plate (8) is provided with a condenser pipe (6), one end of the condenser pipe (6) is connected with the cooler (5), and the other end of the condenser pipe (6) is connected with the adapter sleeve (41).

4. The pressure relief and heat dissipation structure for a switch cabinet according to claim 3, characterized in that, The housing (7) is further provided with a water baffle (15), and the water baffle (15) is arranged on the inner side of the condenser pipe (6), a plurality of air inlets (16) are arranged on the water baffle (15) in an array, a water blocking shed (17) is arranged on each air inlet (16) to prevent water droplets from passing through the air inlet (16), and the inner side of the water baffle (15) is provided with a waterproof and breathable film (18).

5. The pressure relief and heat dissipation structure for a switch cabinet according to claim 4, characterized in that, The lower end of the housing (7) is provided with a water storage box (12), the water storage box (12) is provided with a conveying pipe (14) penetratingly connected thereto, and a conveying pump (13) is arranged between the water storage box (12) and the conveying pipe (14).

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