Pressure relief and heat dissipation structure for switch cabinet

Abstract

The invention 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 used for covering pressure relief channels are slidably mounted on the fixed frame, and reset assemblies used for pushing the sealing windows to reset are mounted on the top surfaces of the sealing windows; the bottom face of the sealing window is connected with a first connecting frame through a first connecting shaft, and a limiting assembly capable of locking the vertical moving position of the sealing window is installed on the first connecting frame. The flow adjusting mechanism is arranged on the first connecting frame and used for automatically adjusting the flow of the flowing cooling liquid. According to the switch cabinet, the sealing window can be automatically closed or opened from the fixing frame through the automatic pressure relief mechanism, it is guaranteed that high-pressure airflow in the switch cabinet body is discharged in time, supporting can be provided for the sealing window through arrangement of a ratchet wheel and a pawl, supporting force can be provided for the switch cabinet in a rainy weather environment, and the safety of the switch cabinet is improved. Rainwater is prevented from being poured into the switch cabinet.

Description

Technical Field

[0001] The invention belongs to the technical field of switch cabinets, and in particular is a pressure relief and heat dissipation structure for a switch cabinet. Background Art

[0002] During the operation of the switch cabinet, due to insulation aging, human operating errors, switch cabinet design defects, etc., 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. Since the cabinet body is relatively narrow, if the faulty airflow cannot be effectively released in a short time, it will cause the switch cabinet to explode, causing serious damage to adjacent switch cabinets and personnel, and causing major safety accidents.

[0003] The switch cabinet pressure relief protection structure with the publication number CN220291463U provides a switch cabinet pressure relief protection structure, including a switch cabinet body, a pressure relief box is arranged on the top of the switch cabinet body, a pressure relief hole is provided through the top surface of the switch cabinet body, the switch cabinet body is connected with the pressure relief box through the pressure relief hole, a pressure relief disc is movably installed inside the pressure relief hole, a through hole is provided through the end surface of the pressure relief disc, a through hole is provided on the surface of the switch cabinet body, a plug-in rod is inserted inside the through hole, the pressure relief disc is sleeved on the outside of the plug-in rod through the through hole, a mounting rod is arranged on the top of the switch cabinet body, a spring is installed on the surface of the mounting rod, and the other end of the spring is fixed to the surface of the pressure relief disc. By setting the pressure relief box, the pressure relief hole, the through hole, the plug-in rod, the pressure relief disc, the mounting frame, and the spring, the switch cabinet body is convenient to relieve pressure, and this method is simple to operate.

[0004] During the implementation of the above-mentioned patent, although an automatic pressure relief mechanism is designed, which can automatically open the pressure relief channel when the internal air pressure rises and discharge the high-pressure airflow, thereby protecting the switch cabinet and its internal equipment from damage, these traditional switch cabinets have obvious shortcomings when dealing with severe weather conditions, especially rainy and snowy weather. Specifically, when rainy and snowy weather comes, the accumulation of rain or snow water can easily cause the pressure relief channel to open, which in turn causes rain or snow water to pour into the interior of the switch cabinet, causing the equipment to become damp, short-circuited, or even damaged. Summary of the invention

[0005] In order to solve the problems raised by the above background technology, the present invention proposes a pressure relief and heat dissipation structure for a switch cabinet.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A pressure relief and heat dissipation structure for a switch cabinet comprises a fixed frame and a shell, a plurality of sealing windows for covering a pressure relief channel are slidably mounted on the fixed frame, and a reset assembly for pushing the sealing window to reset is mounted 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, and a limit assembly capable of locking the sealing window to move up and down is installed on the first connecting frame;

[0009] The flow regulating mechanism is arranged on the No. 1 connecting frame and is used for automatically regulating the flow of the flowing coolant.

[0010] As a further preferred embodiment of the present technical solution: the limit assembly includes a rotatable transmission shaft and a No. 1 rotating shaft, a No. 1 transmission gear is fixedly mounted on the transmission shaft, and a No. 1 rack meshing with the No. 1 transmission gear is mounted on the No. 1 connecting frame, and a ratchet is also fixedly mounted on the transmission shaft, and a pawl used in conjunction with the ratchet is fixedly mounted on the No. 1 rotating shaft.

[0011] As a further preferred embodiment of the present technical solution: the flow regulating mechanism includes an adapter sleeve and a No. 2 rack, a No. 2 isolating square tube is arranged inside the adapter sleeve, a No. 2 rotating shaft is rotatably installed inside the No. 2 isolating square tube, a No. 4 transmission gear meshing with the No. 2 rack is fixedly installed on the No. 2 rotating shaft, and the No. 2 rack is connected to the No. 1 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, and the end of the movable baffle away from the fixed baffle is fixedly installed with the No. 2 rotating shaft, and through holes for allowing coolant to pass through are provided on both the fixed baffle and the movable baffle.

[0012] As a further preferred embodiment of the present technical solution: the reset assembly includes a guide shaft fixedly mounted on the top surface of the fixed frame, a No. 2 connecting frame is slidably mounted on the guide shaft, a No. 2 connecting shaft is fixedly mounted on the lower end of the No. 2 connecting frame, and the lower end of the No. 2 connecting shaft is fixedly mounted on the sealing window.

[0013] As a further preferred embodiment of the present technical solution: a volute spring is provided at the end of the transmission shaft for rotating and resetting the transmission shaft.

[0014] As a further preferred embodiment of the technical solution: a cooler is respectively provided on both sides of the fixing frame, and the cooler is connected to the adapter sleeve through a pipeline.

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

[0016] As a further preferred embodiment of the present technical solution: a water baffle is also installed inside the shell, and the water baffle is arranged on the inner side of the condenser, a plurality of air inlets arranged in an array are arranged on the water baffle, each of the air inlets is provided with a water retaining shed for preventing water droplets from passing through the air inlet, and a waterproof and breathable membrane is provided on the inner side of the water baffle.

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

[0018] As a further preferred embodiment of the present technical solution: the limit assembly also includes a mini motor, a No. 2 transmission gear is fixedly installed on the output end of the mini motor, the No. 2 transmission gear is meshingly connected with a No. 3 transmission gear, and the No. 3 transmission gear is fixedly installed on the end of the No. 1 rotating shaft.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, the sealing window can be automatically closed or opened from the fixed frame through the automatic pressure relief mechanism, so as to ensure that the high-pressure airflow inside the switch cabinet body is discharged in time, and the sealing window can be supported by the arrangement of the ratchet and the pawl, so that the switch cabinet can provide supporting force in the rainy weather environment to prevent rainwater from entering the interior of the switch cabinet.

[0021] 2. In the present invention, the design of the reset assembly enables the sealing window to automatically reset after the air pressure is released and to be re-closed on the fixed frame to maintain the sealed state. The automatic pressure release and reset of the sealing window greatly improves the safety and stability of the switch cabinet.

[0022] 3. In the present invention, the flow rate of the coolant can be adjusted according to the opening degree of the pressure relief channel through the flow regulating mechanism, thereby enhancing the cooling effect inside the switch cabinet, and can quickly take away the heat inside the switch cabinet to avoid overheating and damage to the equipment.

[0023] 4. In the present invention, a double-layer waterproof measure of a water retaining shed and a waterproof breathable membrane is adopted to effectively prevent condensed water from entering the interior of the switch cabinet and protect the dryness of the equipment. At the same time, the setting of the water storage box and the delivery pipe realizes the collection and discharge of condensed water and avoids increasing the burden on the switch cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a sectional view of the three-dimensional structure of the present invention;

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

[0027] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0028] Figure 5 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 1 ;

[0029] Figure 6 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 2 ;

[0030] Figure 7 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 3 ;

[0031] Figure 8 for Figure 7 The enlarged schematic diagram of point B in the middle;

[0032] Fig. 9 for Figure 7 The enlarged schematic diagram at C in the middle;

[0033] Fig.10 for Figure 6 The enlarged schematic diagram at D in the middle;

[0034] Fig.11 It is an exploded view of the local structure of the present invention.

[0035] Legend: 1. Switch cabinet body; 2. Automatic pressure relief mechanism; 21. Fixed frame; 22. Sealing window; 23. No. 1 connecting shaft; 24. No. 1 connecting frame; 25. Reset assembly; 251. No. 2 connecting shaft; 252. No. 2 connecting frame; 253. Guide shaft; 254. Reset spring; 26. Limit assembly; 261. No. 1 rack; 262. No. 1 transmission gear; 263. Transmission shaft; 264. Ratchet; 265. Ratchet; 266. Mini motor; 267. No. 2 transmission gear; 268. No. 3 transmission gear; 269. No. 1 rotating shaft; 27. Connecting shell; 28 , 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; 7, casing; 8, mounting plate; 9, cooling fan assembly; 11, cooling channel; 12, water storage box; 13, delivery pump; 14, delivery pipe; 15, water baffle; 16, air inlet; 17, water retaining shed; 18, waterproof and breathable membrane. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1:

[0038] See also Figure 1-Figure 11The present application provides a pressure relief and heat dissipation structure for a switch cabinet, comprising a switch cabinet body 1 and a pressure relief and heat dissipation structure, wherein the pressure relief and heat dissipation structure comprises a dust cover 3 and an automatic pressure relief mechanism 2 installed inside the dust cover 3, wherein the automatic pressure relief mechanism 2 comprises a fixed frame 21 fixedly installed on the top wall of the switch cabinet body 1, wherein a plurality of sealing windows 22 are slidably connected to the fixed frame 21, and are used to cover the fixed frame 21 to form a sealed space, wherein a reset component 25 is installed above the sealing window 22, wherein the reset component 25 comprises a No. 2 connecting shaft 251 fixedly installed on the top surface of the sealing window 22, wherein a No. 2 connecting frame 252 is fixedly installed on the upper end of the No. 2 connecting shaft 251, and a guide shaft 253 is fixedly installed on 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 arranged between the No. 2 connecting frame 252 and the dust cover 3, and is used to push the No. 2 connecting frame 252 by elastic force to drive the sealing window 22 to reset and cover the fixed frame 21 again after the sealing window 22 rises and opens. A No. 1 connecting shaft 23 is fixedly installed on the bottom wall of each sealing window 22, and a No. 1 connecting frame 24 is fixedly installed on the lower end of the No. 1 connecting shaft 23, and a fixing frame 211 is fixedly installed on the inner wall of the switch cabinet body 1, and a limit assembly 26 is installed on the fixing frame 211, and the limit assembly 26 includes a transmission shaft 263 rotatably installed on the fixing frame 211, and a No. 1 transmission gear 26 is fixedly installed on the transmission shaft 263 2, and the limit assembly 26 also includes a No. 1 rack 261 fixedly mounted on the No. 1 connecting frame 24, and the No. 1 rack 261 is meshed with and used in conjunction with a No. 1 transmission gear 262, and a connecting shell 27 is fixedly mounted on the fixing frame 211, and a spiral spring 28 is arranged 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, so that after the transmission shaft 263 rotates a certain number of times, the transmission shaft 263 can be reset by the elastic force of the spiral spring 28, and a mini motor 266 is also fixedly mounted on the fixing frame 211, and a No. 2 transmission gear 267 is fixedly mounted on the output end of the mini motor 266, and the No. 2 transmission gear 267 is fixedly mounted on the output end of the mini motor 266. The transmission gear 267 is meshed 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, and a ratchet 265 used in conjunction with the ratchet 264 is fixedly mounted on the first rotating shaft 269. A first isolating square tube 210 is passed through and fixedly mounted on the top wall of the switch cabinet body 1, and the first rack 261 slides through the inside of the first isolating square tube 210 to extend the space for the first rack 261 to rise, and is in a sealed state to prevent rainwater from seeping in. It should be noted here 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 rain shelter structure is not shown in the figure.The canopy structure can block most of the rain, and the small amount of rain that drips can be blocked on the outside of the switch cabinet body 1 through the sealing window 22.

[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 discharge the air pressure inside the switch cabinet body 1, the air pressure will push the sealing window 22 to rise, so as to open the pressure relief channel on the fixed frame 21 and discharge the air pressure inside the switch cabinet body 1. During the rising process of the fixed frame 21, the No. 1 connecting shaft 23 can be driven to rise, and the No. 1 connecting shaft 23 drives the No. 1 connecting frame 24 to rise. In this way, the air pressure inside the switch cabinet body 1 is released, and the rising of the No. 1 connecting frame 24 drives the No. 1 rack 261 to rise, and the rising of the No. 1 rack 261 drives the No. 1 transmission gear 262 to rotate, and the rotation of the No. 1 transmission gear 262 drives the transmission shaft 263 to rotate, and the transmission shaft 263 drives the ratchet 264 to rotate, and the pawl 265 can allow the ratchet 264 to rotate in one direction, that is, it can only allow the No. 1 rack 261 to rise, thereby realizing the position of the sealing window 22 when it rises. The limit position is achieved, and when the internal air pressure is released, the mini motor 266 can be started to drive the second transmission gear 267 to rotate, the second transmission gear 267 drives the third transmission gear 268 to rotate, the third transmission gear 268 drives the first rotating shaft 269 to rotate, the first rotating shaft 269 drives the pawl 265 to separate from the ratchet 264, and drives the transmission shaft 263 to rotate in the opposite direction under the elastic force of the spiral spring 28, so as to realize the reset of the sealing window 22 and block the pressure relief channel on the fixed frame 21, and then drive the second transmission gear 267 to rotate by reverse driving the mini motor 266, so as to realize the pawl 265 to be stuck on the ratchet 264 again, and limit the further sliding of the sealing window 22, and then in severe weather conditions, if rainwater accumulates on the switch cabinet body 1, the sealing window 22 will not be sunk, so that the rainwater will be poured into the interior of the switch cabinet body 1, causing damage to the equipment inside the switch cabinet body 1, thereby ensuring the safety of the equipment inside the switch cabinet body 1.

[0040] Embodiment 2:

[0041] On the basis of the first embodiment, a flow regulating mechanism 4 is installed on the top of the switch cabinet body 1, and the flow regulating mechanism 4 includes a second rack 45 connected to the first connecting frame 24 through a transmission frame 29, and a cooler 5 is installed on the top of the switch cabinet body 1, and the cooler 5 is connected to a transfer sleeve 41 through a pipeline, and a fixed baffle 42 is installed in the internal pipeline of the transfer sleeve 41, and a movable baffle 43 is rotatably installed on the fixed baffle 42, and the fixed baffle 42 and the movable baffle 43 are both provided with through holes that allow the coolant to pass through, and in the initial In the initial state, the through holes on the fixed baffle 42 and the movable baffle 43 are staggered, and a No. 2 isolating square tube 44 is fixedly installed inside the adapter sleeve 41, and a No. 2 rotating shaft 47 is rotatably connected inside the No. 2 isolating square tube 44, and a No. 4 transmission gear 46 meshing with the No. 2 rack 45 is fixedly installed on the No. 2 rotating shaft 47. The No. 2 rack 45 passes through and slides inside the No. 2 isolating square tube 44, which can prevent the No. 2 rack 45, the No. 4 transmission gear 46 and the No. 2 rotating shaft 47 from directly contacting the coolant flowing out of the cooler 5, thereby protecting the cleanliness of the coolant.

[0042] Specifically, when the No. 1 connecting frame 24 rises, that is, the pressure relief channel is opened, the No. 1 connecting frame 24 drives the transmission frame 29 to rise, the transmission frame 29 drives the No. 2 rack 45 to rise, the No. 2 rack 45 drives the No. 4 transmission gear 46 to rotate, the No. 4 transmission gear 46 drives the No. 2 rotating shaft 47 to rotate, and the No. 2 rotating shaft 47 drives the movable baffle 43 to rotate, so that the through hole on the movable baffle 43 is directly opposite to the through hole on the fixed baffle 42, which can increase the flow rate of the coolant flow, and at the same time cooperate with the cooling fan assembly 9 to blow cold air into the interior of the switch cabinet body 1, and quickly cool the interior of the switch cabinet body 1 The equipment is cooled. At this point, the flow rate of the coolant is increased to increase the cooling effect on the inside of the switch cabinet body 1, which solves the problem of rising temperature inside the switch cabinet while depressurizing most switch cabinets. Increasing the flow rate of the coolant can take away the heat inside the switch cabinet body 1 to avoid the problem of explosion. It should be noted that the reason for not increasing the flow rate of the coolant is that too high a flow rate of the coolant will cause excessive liquid pressure in the pipeline, which may cause damage to the pipeline, pump, valve, etc., and increase the energy loss of the cooler 5, resulting in a waste of resources.

[0043] Embodiment three:

[0044] On the basis of the second embodiment, a shell 7 is fixedly mounted on the side wall of the switch cabinet body 1, a mounting plate 8 is fixedly mounted on the shell 7, a cooling fan assembly 9 is mounted on the mounting plate 8, a condenser 6 is mounted on the inner side of the mounting plate 8, and the output end of the condenser 6 is through-mounted on the adapter sleeve 41, the input end of the condenser 6 is connected to the cooler 5, a water baffle 15 is mounted on the inner side of the condenser 6, and an array of air inlets 16 are arranged on the water baffle 15, and a water retaining shed 17 for shielding water droplets is installed on the outer side of each of the air inlets 16, and the water retaining shed 17 is arranged in an inclined V-shape to facilitate water droplets to flow down from the water retaining shed 17. The water retaining plate 15 is provided with a waterproof breathable membrane 18 inside, which can allow air to pass through and can block water molecules, and the mounting plate 8, the water retaining plate 15 and the waterproof breathable membrane 18, the waterproof breathable membrane 18 is the prior art and is only used, and are all installed inside the outer shell 7, the lower part of the outer shell 7 is connected with a water storage box 12, and a one-way valve is installed between the water storage box 12 and the outer shell 7 to prevent the water entering the water storage box 12 from flowing back into the inner part of the outer shell 7 again, and a delivery pipe 14 is installed on the water storage box 12, and a delivery pump 13 for discharging liquid water in the water storage box 12 from the delivery pipe 14 is installed between the water storage box 12 and the delivery pipe 14.

[0045] At this point, the heat dissipation fan assembly 9 is an existing technology, and it is used to blow external air into the switch cabinet body 1 through ventilation to dissipate heat, and the cooling and heat dissipation effect is increased by the coolant inside the condenser 6. The condenser 6 serves as a carrier of the coolant of the flow regulating mechanism 4. When the flow regulating mechanism 4 adjusts the coolant flow, it circulates through the condenser 6. When the temperature difference between the inside and outside of the corresponding condenser 6 is large, water droplets will appear on the surface of the condenser 6. If not processed, they will be brought into the switch cabinet body 1, causing damage to the internal equipment of the switch cabinet body 1. The present structure can block most of the water droplets through the water retaining shed 17 and flow into the bottom of the outer shell 7 through the inclined surface of the water retaining shed 17 and then enter the water storage box 12 for collection, and the liquid water inside the water storage box 12 can be pumped out through the delivery pipe 14. Even if a small part of the water passes through the water retaining plate 15, it can be blocked by the waterproof and breathable membrane 18 to further protect the dryness of the equipment inside the switch cabinet body 1.

[0046] In summary, through the setting of automatic pressure relief mechanism 2, flow regulating mechanism 4 and condensation heat dissipation, automatic pressure relief inside the switch cabinet is effectively achieved, and there is no need to worry about rainwater in rainy and snowy weather pressing down the sealing window 22 in the pressure relief channel, causing rainwater to enter the switch cabinet. The flow regulating mechanism 4 can adjust the coolant flow while the pressure relief channel is open, thereby improving the condensation heat dissipation efficiency and ensuring the dryness and safety of the inside of the switch cabinet.

[0047] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A pressure relief and heat dissipation structure for a switch cabinet, characterized in that: It comprises a fixed frame (21) and a housing (7); a plurality of sealing windows (22) for covering the pressure relief channel are slidably mounted on the fixed frame (21); a reset assembly (25) for pushing the sealing window (22) to reset is mounted on the top surface of the sealing window (22); The bottom surface of the sealing window (22) is connected to a first connecting frame (24) via a first connecting shaft (23), and a limiting component (26) capable of locking the sealing window (22) in an upward and downward moving position is installed on the first connecting frame (24); The flow regulating mechanism (4) is arranged on the first connecting frame (24) and is used for automatically regulating the flow of the flowing coolant.

2. A pressure relief and heat dissipation structure for a switch cabinet according to claim 1, characterized in that: The limit assembly (26) comprises a rotatable transmission shaft (263) and a first rotating shaft (269); a first transmission gear (262) is fixedly mounted on the transmission shaft (263); a first rack (261) meshing with the first transmission gear (262) is mounted on the first connecting frame (24); a ratchet (264) is also fixedly mounted on the transmission shaft (263); and a ratchet pawl (265) used in conjunction with the ratchet (264) is fixedly mounted on the first rotating shaft (269).

3. A pressure relief and heat dissipation structure for a switch cabinet according to claim 1, characterized in that: The flow regulating mechanism (4) comprises an adapter sleeve (41) and a second rack (45), wherein a second isolating square tube (44) is arranged inside the adapter sleeve (41), a second rotating shaft (47) is rotatably mounted inside the second isolating square tube (44), a fourth transmission gear (46) meshingly connected with the second rack (45) is fixedly mounted on the second rotating shaft (47), and the second rack (45) is connected to the first connecting frame (24) through a transmission frame (29), a fixed baffle (42) is also fixedly mounted inside the adapter sleeve (41), a movable baffle (43) is rotatably mounted on the fixed baffle (42), and one end of the movable baffle (43) away from the fixed baffle (42) is fixedly mounted on the second rotating shaft (47), and through holes for passing coolant are provided on both the fixed baffle (42) and the movable baffle (43).

4. A pressure relief and heat dissipation structure for a switch cabinet according to claim 1, characterized in that: The reset assembly (25) comprises a guide shaft (253) fixedly mounted on the top surface of the fixed frame (21), a second connecting frame (252) being slidably mounted on the guide shaft (253), a second connecting shaft (251) being fixedly mounted on the lower end of the second connecting frame (252), and a lower end of the second connecting shaft (251) being fixedly mounted on the sealing window (22).

5. The pressure relief and heat dissipation structure for a switch cabinet according to claim 2, characterized in that: A spiral spring (28) is provided at the end of the transmission shaft (263) for enabling the transmission shaft (263) to rotate and reset.

6. A pressure relief and heat dissipation structure for a switch cabinet according to claim 3, characterized in that: A cooler (5) is provided on each side of the fixing frame (21), and the cooler (5) is connected to the adapter sleeve (41) through a pipeline.

7. A pressure relief and heat dissipation structure for a switch cabinet according to claim 3, characterized in that: A mounting plate (8) is installed on the outer shell (7), a cooling fan assembly (9) for heat dissipation is installed on the mounting plate (8), a condenser (6) is installed on the inner side of the mounting plate (8), one end of the condenser (6) is connected to the cooler (5), and the other end of the condenser (6) is connected to the adapter sleeve (41).

8. A pressure relief and heat dissipation structure for a switch cabinet according to claim 7, characterized in that: A water baffle (15) is also installed inside the shell (7), and the water baffle (15) is arranged on the inner side of the condenser tube (6). The water baffle (15) is provided with a plurality of air inlets (16) arranged in an array, and each of the air inlets (16) is provided with a water baffle (17) for preventing water droplets from passing through the air inlet (16). A waterproof and breathable membrane (18) is provided on the inner side of the water baffle (15).

9. A pressure relief and heat dissipation structure for a switch cabinet according to claim 8, characterized in that: A water storage box (12) is installed at the lower end of the housing (7), a delivery pipe (14) is connected through the water storage box (12), and a delivery pump (13) is provided between the water storage box (12) and the delivery pipe (14).

10. The pressure relief and heat dissipation structure for a switch cabinet according to claim 2, characterized in that: The limiting assembly (26) further comprises a mini motor (266), the output end of the mini motor (266) being fixedly mounted with a second transmission gear (267), the second transmission gear (267) being meshingly connected with a third transmission gear (268), and the third transmission gear (268) being fixedly mounted with the end of the first rotating shaft (269).

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