High-protection switch cabinet with multilayer shielding electromagnetic protection

Abstract

The invention discloses a high-protection switch cabinet with multi-layer shielding electromagnetic protection, and is applied to the technical field of switch cabinets. Comprising a switch cabinet body, sealing shells are welded to the two sides of the switch cabinet body, ventilation windows are communicated with the ends, away from the switch cabinet body, of the tops of the two sealing shells through bolts, and fixing bases are connected to the top of the switch cabinet body and the tops of the sealing shells through bolts. Heat conduction is carried out inside the switch cabinet main body through the heat dissipation fins, and heat inside the switch cabinet main body is transferred into the sealed shell. And then ventilation and heat dissipation are conducted on the interiors of the sealing shells through the heat dissipation mechanisms, so that external cold air can flow in the two sealing shells in sequence, and heat in the heat dissipation fins is taken away. Therefore, the interior of the switch cabinet can be completely sealed, the electromagnetic shielding protection capability is ensured, the flowing path of the air flow is changed, the air flow can uniformly flow to the heat dissipation fins at different positions to take away internal heat, and the heat dissipation effect on electronic components is fully improved.

Description

Technical Field

[0001] This invention belongs to the field of switchgear technology, and specifically relates to a highly protective switchgear with multi-layer shielding electromagnetic protection. Background Technology

[0002] Switchgear is an important type of power distribution equipment in power systems, mainly used for distributing electrical energy, controlling circuits, and protecting electrical equipment. It typically consists of a metal enclosure, circuit breakers, disconnect switches, protective devices, and measuring instruments, and is widely used in power distribution sites in industrial, commercial, and public facilities.

[0003] Currently, Chinese invention patent CN113381308B discloses a safe and stable switchgear. Existing switchgear typically requires electromagnetic shielding to ensure the stable and reliable operation of sensitive components (such as relay protection devices, PLCs, and intelligent instruments) and to prevent electromagnetic interference generated inside the cabinet from leaking out. However, switchgear often requires ventilation holes for heat dissipation of internal electronic components, which prevents the switchgear from being completely sealed, thus reducing its electromagnetic shielding capability. Furthermore, even with ventilation holes, the straight-line airflow means that the cool outside air blown in by the fan can only flow directly to the exhaust vent. This is ineffective for cooling electronic components not in the airflow path, thus not only reducing the switchgear's electromagnetic shielding capability but also failing to adequately dissipate heat from the internal electronic components. Summary of the Invention

[0004] The purpose of this invention is to provide a highly protective switchgear with multi-layered electromagnetic shielding. Its advantages are that it ensures the electromagnetic shielding protection capability of the switchgear, while allowing the airflow blown out by the motor to flow fully inside the switchgear, thereby improving the heat dissipation effect.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a highly protective switch cabinet with multi-layer shielded electromagnetic protection, comprising a switch cabinet body, both sides of the switch cabinet body are welded with sealed shells, and the top of each of the two sealed shells away from the switch cabinet body is bolted to a ventilation window, the top of the switch cabinet body and the sealed shells are bolted to a fixing seat, a motor is slidably connected to one side of the fixing seat, heat dissipation fins welded to both sides of the switch cabinet body are provided inside the two sealed shells, a water removal mechanism that works in conjunction with the heat dissipation fins is installed at the bottom of the switch cabinet body, and a heat dissipation mechanism is installed inside the two ventilation windows.

[0006] The above technical solution involves heat conduction through heat sink fins, transferring heat from the main body of the switchgear to the sealed housing. A cooling mechanism then ventilates the sealed housing, allowing cool outside air to flow sequentially within both housings, carrying away heat from the heat sink fins. This not only ensures complete sealing of the switchgear interior, guaranteeing electromagnetic shielding, but also alters the airflow path, ensuring even distribution of air to the heat sink fins at different locations, significantly improving heat dissipation for electronic components. A motor slides horizontally across the top of the switchgear, causing the driving bevel gear to alternately mesh with the left and right driven bevel gears, driving the two ventilation fan blades to rotate alternately in opposite directions. This changes the direction of airflow, from inward to outward, and vice versa, preventing one side's heat sink fins from constantly receiving outside air used by the other, ensuring consistent heat dissipation on both sides. Airflow enters the hourglass-shaped connecting groove, driving the fan blades to rotate and generating driving force. This force causes the wiping pads at the bottom of the sliding support plate to slide up and down on both sides of the heat sink fins. The wiping pads absorb water droplets condensing on the surface of the heat sink fins, and when they slide to the sides of the water-squeezing protrusions, the water inside the wiping pads is squeezed into the water collection box for storage. This effectively removes water from both sides of the heat sink fin surface, preventing water accumulation inside the sealed housing.

[0007] The invention is further configured such that the dewatering mechanism includes an hourglass-shaped connecting groove formed at the bottom of the switch cabinet body and communicating with the interiors of the two sealed housings. A fixing frame is bolted to the interior of the hourglass-shaped connecting groove. Rotating shafts are rotatably connected to both sides of the fixing frame. Drive blades, fixedly sleeved to the rotating shafts, are symmetrically arranged on both sides of the fixing frame. Small bevel gears are bolted to both ends of the rotating shafts. Removable side plates are bolted to the bottom of both sealed housings. A threaded rod with both positive and negative threads is rotatably connected inside the removable side plate. The bottom of the rod is bolted to a large bevel gear that meshes with a small bevel gear. The surface of the positive and negative threaded rod is threaded with a connecting frame that is slidably connected to the detachable side plate. The side of the connecting frame near the heat dissipation fins is bolted to a sliding support plate. The bottom of the sliding support plate is bonded to a wiping pad that is slidably connected to both sides of the heat dissipation fins. The bottom of the switch cabinet body is welded to both sides of the hourglass-shaped connecting groove, and a water squeezing protrusion that is slidably connected to the wiping pad. The bottom of the inner cavities of the two sealed housings is bolted to a water collection box. One end of the water collection box is fixedly connected to a drain valve.

[0008] The above technical solution is adopted to absorb the water droplets condensed on the surface of the heat sink fins, and when sliding to both sides of the water squeezing protrusion, squeeze the water inside the wiping pad into the water collection box for storage, and finally discharge it outward through the drain valve. This can remove water from both sides of the heat sink fin surface and prevent water accumulation inside the sealed housing.

[0009] The invention is further configured such that the heat dissipation mechanism includes a transmission shaft rotatably connected to the inside of the fixed base; the output end of the motor is bolted to a driving bevel gear; both sides of the driving bevel gear are symmetrically meshed with a left driven bevel gear and a right driven bevel gear, which are fixedly sleeved on the surface of the transmission shaft and are completely identical; both ends of the transmission shaft are also bolted to two end bevel gears; a support frame is bolted to the inside of the ventilation window; a connecting rod is rotatably connected to the inside of the support frame; a ventilation fan blade is rotatably connected to the side of the support frame near the heat dissipation fins; a fan blade bevel gear is bolted to one end of the ventilation fan blade inside the support frame; and transmission bevel gears that mesh with the end bevel gear and the fan blade bevel gear are bolted to the top and bottom of the connecting rod, respectively.

[0010] By adopting the above technical solution, not only can the inside of the switch cabinet be completely sealed to ensure electromagnetic shielding protection, but the airflow path can also be changed so that the airflow can flow evenly to the heat dissipation fins at different locations to remove internal heat, thereby significantly improving the heat dissipation effect on electronic components.

[0011] The present invention is further configured such that a guide groove is provided on the top of the switch cabinet body and is slidably connected to the motor, and a transverse cylinder is provided on the side of the fixed base near the motor and is bolted to the top of the switch cabinet body, and the output end of the transverse cylinder is fixedly connected to one side of the motor.

[0012] The above technical solution is adopted: by opening the transverse cylinder, the motor is driven to slide inside the guide groove, thereby driving the active bevel gear to mesh with the left driven bevel gear or the right driven bevel gear respectively.

[0013] The present invention is further configured such that the interior of the switch cabinet body is provided with a handcart compartment, a busbar compartment, and a cable compartment, and an instrument box is bolted to the top of the handcart compartment inside the switch cabinet body.

[0014] The above technical solution isolates different components by creating separate compartments for the handcart, busbars, and cables within the switchgear. Simultaneously, the switchgear can be completely sealed, providing multi-layered electromagnetic shielding for internal components and enhancing protection effectiveness.

[0015] The present invention is further configured such that a busbar is fixedly connected through the busbar compartment, and a busbar terminal is bolted to one end of both the busbar compartment and the busbar near the handcart compartment. A connecting wire busbar is bolted to one side of the busbar, and the busbar is electrically connected to the busbar terminal through the connecting wire busbar.

[0016] The above technical solution involves connecting the busbar terminals inside the switch cabinet to the busbar power supply via the connecting wire bar, and then connecting the power supply terminals to the busbar terminals to transmit the power from the busbar to the busbar terminals.

[0017] The invention is further configured such that a control screw is rotatably connected inside the handcart compartment, and a circuit breaker is slidably connected to the inside of the handcart compartment by a threaded sleeve on the top of the control screw. A power-conducting terminal that is slidably connected to the bus terminal is fixedly installed on the back of the circuit breaker.

[0018] The above technical solution involves rotating the control screw to engage with the bottom bolt of the circuit breaker, thereby causing the circuit breaker to slide inside the truck compartment, which in turn controls the connection or disconnection of the energized terminals on the back of the circuit breaker with the bus terminals.

[0019] The invention is further configured such that a current transformer, a line arrester, a grounding switch, and a zero-sequence transformer are bolted to each other inside the cable compartment, and an instrument panel is bolted to the side of the cable compartment away from the line arrester.

[0020] The above technical solution is used to protect the internal power transmission of the switchgear and improve the safety and stability of power transmission.

[0021] The invention is further configured such that the side of the two ventilation windows closest to the heat dissipation fins is bolted with air guide louvers that cooperate with the ventilation fan blades, and the side of the two ventilation windows furthest from the air guide louvers is bolted with a protective mesh plate.

[0022] The above technical solution involves installing air guide louvers to direct the incoming airflow, allowing it to blow downwards and evenly across the surface of the heat dissipation fins, carrying away heat. Simultaneously, installing a protective mesh panel prevents debris and other contaminants from being blown into the sealed housing.

[0023] The present invention is further configured such that a sealed door is hinged to the front of the switch cabinet body for use in conjunction with the handcart compartment and the cable compartment.

[0024] The above technical solution allows for the opening or closing of the front of the switchgear compartment and cable compartment by rotating the sealing door, facilitating the maintenance of the internal equipment of the switchgear and ensuring thorough sealing to guarantee the electromagnetic shielding protection effect.

[0025] In summary, the present invention has the following beneficial effects: 1. Heat is conducted through heat dissipation fins to the interior of the switchgear body, transferring heat from the main body to the sealed housing. Then, a cooling mechanism ventilates the sealed housing, allowing cool outside air to flow sequentially between the two sealed housings, carrying away heat from the heat dissipation fins. This not only ensures a completely sealed interior for electromagnetic shielding, but also alters the airflow path, allowing air to flow evenly to the heat dissipation fins at different locations, significantly improving heat dissipation for electronic components. Furthermore, moisture in the air entering the sealed housing forms water droplets on the heat dissipation fins, keeping the incoming air relatively dry. 2. By driving the motor to slide horizontally on the top of the switch cabinet body, the driving bevel gear alternately meshes with the left driven bevel gear and the right driven bevel gear, causing them to drive the two ventilation fan blades to rotate alternately in the forward and reverse directions. This changes the direction of airflow from one side to the other, thus preventing the heat dissipation fins on one side from constantly receiving outside air used by the other side, ensuring consistent heat dissipation on both sides. At the same time, it also prevents the surface temperature of the heat dissipation fins from dropping due to continuous air intake on one side, which would reduce the dehumidification effect. 3. Airflow enters the hourglass-shaped connecting groove, driving the fan blades to rotate and generating driving force. This force causes the wiping pad at the bottom of the sliding support plate to slide up and down on both sides of the heat sink fins. The wiping pad absorbs water droplets condensing on the surface of the heat sink fins, and when it slides to both sides of the water squeezing protrusions, the water inside the wiping pad is squeezed into the water collection box for storage. This effectively removes water from both sides of the heat sink fin surface, preventing water accumulation inside the sealed housing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the heat sink fin structure of the present invention; Figure 4 This is a cross-sectional view of the overall structure of the present invention; Figure 5 This is a cross-sectional view of the fixing base structure of the present invention; Figure 6 This is a cross-sectional view of the ventilation window structure of the present invention; Figure 7 This is a partial structural diagram of the water removal mechanism of the present invention.

[0027] Reference numerals: 1. Switch cabinet body; 2. Sealed housing; 3. Ventilation window; 4. Fixing base; 5. Motor; 6. Horizontal movement cylinder; 7. Heat dissipation fins; 8. Water removal mechanism; 801. Hourglass-shaped connecting groove; 802. Fixing frame; 803. Rotating shaft; 804. Drive fan blade; 805. Small bevel gear; 806. Removable side plate; 807. Positive and negative threaded screws; 808. Large bevel gear; 809. Connecting frame; 810. Sliding support plate; 811. Wiping pad; 812. Water squeezing protrusion; 813. Water collection box; 814. Drain valve; 9. Heat dissipation mechanism; 901. Drive shaft; 902. Driving bevel gear; 903. Left driven bevel gear. Gears; 904. Right driven bevel gear; 905. End bevel gear; 906. Support frame; 907. Connecting rod; 908. Transmission bevel gear; 909. Ventilation fan blade; 910. Fan blade bevel gear; 10. Instrument box; 11. Handcart compartment; 12. Circuit breaker; 13. Control screw; 14. Power terminal; 15. Busbar compartment; 16. Busbar; 17. Connecting wire busbar; 18. Cable compartment; 19. Busbar terminal; 20. Current transformer; 21. Line surge arrester; 22. Grounding switch; 23. Zero-sequence current transformer; 24. Instrument panel; 25. Guide chute; 26. Air guide louver; 27. Protective mesh plate; 28. Sealing door. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1: refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7A highly protective switchgear with multi-layered electromagnetic shielding includes a switchgear body 1. Sealed housings 2 are welded to both sides of the switchgear body 1. Ventilation windows 3 are bolted to the top of each of the two sealed housings 2, away from the switchgear body 1. A fixing seat 4 is bolted to the top of the switchgear body 1 and the sealed housings 2. A motor 5 is slidably connected to one side of the fixing seat 4, and the motor 5 rotates at 3000 r / min. Heat dissipation fins 7, welded to both sides of the switchgear body 1, are installed inside each of the two sealed housings 2. A dewatering mechanism 8, working in conjunction with the heat dissipation fins 7, is installed at the bottom of the switchgear body 1. Heat dissipation mechanisms 9 are installed inside each of the two ventilation windows 3. Heat is conducted through the heat dissipation fins 7 to the interior of the switchgear body 1 and then to the sealed housings 2. The heat dissipation mechanisms 9 then ventilate and dissipate heat into the sealed housings 2, allowing cool outside air to flow sequentially within the two sealed housings 2, carrying away the heat from the heat dissipation fins 7. This not only ensures complete sealing of the switchgear interior, guaranteeing electromagnetic shielding, but also alters the airflow path, allowing air to flow evenly to different heat dissipation fins 7, thus absorbing internal heat and significantly improving heat dissipation for electronic components. By driving the motor 5 to slide horizontally across the top of the switchgear body 1, the driving bevel gear 902 alternately meshes with the left driven bevel gear 903 and the right driven bevel gear 904, causing them to drive the two ventilation fan blades 909 to rotate alternately in both directions. This changes the direction of airflow from one side inwards to outwards, and vice versa, preventing one side's heat dissipation fins 7 from constantly receiving outside air used by the other side, ensuring consistent heat dissipation on both sides. Airflow enters the hourglass-shaped connecting groove 801, driving the fan blades 804 to rotate and generating driving force. This force causes the wiping pad 811 at the bottom of the sliding support plate 810 to slide up and down on both sides of the heat sink fins 7. The wiping pad 811 absorbs water droplets condensed on the surface of the heat sink fins 7, and when it slides to both sides of the water squeezing protrusions 812, it squeezes the water inside the wiping pad 811 into the water collection box 813 for storage. This removes water from both sides of the heat sink fins 7 surface, preventing water accumulation inside the sealed housing 2.

[0030] refer to Figure 2 , Figure 3 , Figure 4 , Figure 7The dewatering mechanism 8 includes an hourglass-shaped connecting groove 801 located at the bottom of the switch cabinet body 1 and communicating with the interiors of the two sealed housings 2. A fixing frame 802, made of aluminum alloy, is bolted to the interior of the hourglass-shaped connecting groove 801. Rotating shafts 803 are rotatably connected to both sides of the fixing frame 802. Drive fan blades 804, fixedly sleeved with the rotating shafts 803, are symmetrically arranged on both sides of the fixing frame 802. Small bevel gears 805 are bolted to both ends of the rotating shafts 803. The two sealed housings... The bottom of the housing 2 is bolted with a detachable side plate 806. A threaded rod 807 is rotatably connected inside the detachable side plate 806. The bottom of the threaded rod 807 is bolted with a large bevel gear 808 that meshes with a small bevel gear 805. A connecting frame 809, which is slidably connected to the detachable side plate 806, is threaded onto the surface of the threaded rod 807. A sliding support plate 810 is bolted to the side of the connecting frame 809 closest to the heat dissipation fins 7. Both the connecting frame 809 and the sliding support plate 810 are made of ABS. Made of engineering plastic, the bottom of the sliding support plate 810 is bonded with a wiping pad 811 that slides and connects to both sides of the surface of the heat dissipation fins 7. The wiping pad 811 is made of PVA sponge. At the bottom of the switch cabinet body 1, on both sides of the hourglass-shaped connecting groove 801, there are water-squeezing protrusions 812 that slide and connect to the wiping pad 811. The bottom of the inner cavities of the two sealed housings 2 are bolted with water collection boxes 813, one end of which is fixedly connected to a drain valve 814. This system absorbs the water droplets condensing on the surface of the heat dissipation fins 7, and when sliding to both sides of the water-squeezing protrusions 812, it squeezes the water inside the wiping pad 811 into the water collection box 813 for storage. Finally, the water is discharged through the drain valve 814, thus removing water from both sides of the surface of the heat dissipation fins 7 and preventing water accumulation inside the sealed housings 2.

[0031] refer to Figure 2 , Figure 3 , Figure 5 , Figure 6The heat dissipation mechanism 9 includes a drive shaft 901 rotatably connected to the fixed base 4. The output end of the motor 5 is bolted to a drive bevel gear 902. Both sides of the drive bevel gear 902 are symmetrically meshed with a left driven bevel gear 903 and a right driven bevel gear 904, which are fixedly sleeved on the surface of the drive shaft 901 and are completely identical. Both ends of the drive shaft 901 are also bolted to two end bevel gears 905. The ventilation window 3 is bolted to a support frame 906. The support frame 906 is rotatably connected to a connecting rod 907. The side of the support frame 906 near the heat dissipation fins 7 is rotatably connected to a ventilation fan blade 909. The diameter of the ventilation fan blade 909 is greater than 25cm and the tilt angle is 15°-20° (forward tilt). One end of the ventilation fan blade 909 inside the support frame 906 is bolted to a fan blade bevel gear 910. The top and bottom of the connecting rod 907 are bolted to a drive bevel gear 908 that meshes with the end bevel gear 905 and the fan blade bevel gear 910, respectively. Not only can it completely seal the inside of the switch cabinet and ensure electromagnetic shielding protection, but it also changes the airflow path so that the airflow can flow evenly to different heat dissipation fins 7 to carry internal heat and fully improve the heat dissipation effect on electronic components.

[0032] refer to Figure 1 , Figure 3 , Figure 6 The top of the switch cabinet body 1 is provided with a guide groove 25 that is slidably connected to the motor 5. A horizontal movement cylinder 6 is bolted to the top of the switch cabinet body 1 on the side of the fixed base 4 near the motor 5. The output end of the horizontal movement cylinder 6 is fixedly connected to one side of the motor 5. By opening the horizontal movement cylinder 6, the motor 5 is driven to slide inside the guide groove 25, thereby driving the driving bevel gear 902 to mesh with the left driven bevel gear 903 or the right driven bevel gear 904 respectively.

[0033] refer to Figure 1 , Figure 4 The main body 1 of the switchgear contains a truck compartment 11, a busbar compartment 15, and a cable compartment 18. An instrument box 10 is bolted to the top of the truck compartment 11 inside the main body 1. By separating the truck compartment 11, busbar compartment 15, and cable compartment 18 inside the switchgear, different components are isolated from each other. Simultaneously, the switchgear can be completely sealed, providing multi-layered electromagnetic shielding for the internal components and improving the protection effect.

[0034] refer to Figure 1 , Figure 4A busbar 16 is fixedly connected through the busbar compartment 15. Busbar terminals 19 are bolted to the ends of both the busbar compartment 15 and the busbar 16 near the handcart compartment 11. A connecting wire busbar 17 is bolted to one side of the busbar 16. The busbar 16 is electrically connected to the busbar terminals 19 via the connecting wire busbar 17. Power to the busbar 16 is supplied to the busbar terminals 19 inside the switchgear via the connecting wire busbar 17, and then the power is transmitted from the busbar 16 to the busbar terminals 19 via the energized terminal 14.

[0035] refer to Figure 4 A control screw 13 is rotatably connected inside the handcart compartment 11. A circuit breaker 12, which is slidably connected inside the handcart compartment 11, is threaded onto the top of the control screw 13. A power-on terminal 14, which is slidably connected to the bus terminal 19, is fixedly installed on the back of the circuit breaker 12. By rotating the control screw 13, which engages with the bottom bolt of the circuit breaker 12, the circuit breaker 12 slides inside the handcart compartment 11, thereby controlling the connection or disconnection of the power-on terminal 14 on the back of the circuit breaker 12 with the bus terminal 19.

[0036] refer to Figure 4 Inside the cable compartment 18, current transformers 20, line surge arresters 21, grounding switches 22, and zero-sequence transformers 23 are bolted together and electrically connected to each other. An instrument panel 24 is bolted to the side of the cable compartment 18 furthest from the line surge arrester 21. This system is used to protect the power transmission inside the switchgear and improve the safety and stability of power transmission.

[0037] refer to Figure 2 , Figure 6 Two ventilation windows 3 are bolted to the side of the ventilation fins 7 with air guide louvers 26 that work in conjunction with the ventilation fan blades 909, and to the side of the ventilation windows 3 away from the air guide louvers 26 with protective mesh plates 27. The air guide louvers 26 guide the incoming airflow, allowing it to blow downwards and evenly across the surface of the ventilation fins 7 to remove heat. The protective mesh plates 27 prevent debris and other contaminants from being blown into the sealed housing 2.

[0038] refer to Figure 1 , Figure 2 The front of the switchgear body 1 is hinged with a sealing door 28 that works in conjunction with the truck compartment 11 and the cable compartment 18. By rotating the sealing door 28, the front of the truck compartment 11 and the cable compartment 18 can be closed or opened, thereby facilitating the maintenance of the internal equipment of the switchgear and ensuring a thorough seal to guarantee the electromagnetic shielding protection effect.

[0039] Brief description of the operation: First, starting the motor 5 drives the driving bevel gear 902 to mesh with the right driven bevel gear 904, causing the transmission shaft 901 to rotate in the forward direction. This drives the two end bevel gears 905 to mesh with the two transmission bevel gears 908, thereby rotating the two connecting rods 907. Since the engagement of the end bevel gears 905 and transmission bevel gears 908 causes the two connecting rods 907 to rotate in opposite directions, the engagement of the transmission bevel gears 908 with the two symmetrically positioned fan blade bevel gears 910 further drives the two ventilation fan blades 909 to rotate in the same direction inside the ventilation window 3. One fan blade 909 rotates to blow air into the sealed housing 2, and the other rotates to blow air out of the sealed housing 2. Then, the heat generated by the components inside the switch cabinet heats the air inside, and this hot air flows through the heat dissipation fins 7. The heat is conducted to the outside of the switch cabinet body 1 through the walls of the heat dissipation fins 7, thus carrying away the heat from the heat dissipation fins 7 as the air flows into the sealed housing 2. At the same time, the two sealed housings 2 are connected by the hourglass-shaped connecting groove 801, so that after the air passes through one side of the sealed housing 2 and carries away the heat inside the heat dissipation fins 7, it flows into the other side of the sealed housing 2 from the bottom and carries away the heat inside the heat dissipation fins 7 before being discharged, thereby changing the airflow path and dissipating heat on both sides of the heat dissipation fins 7.

[0040] By activating the transverse cylinder 6, the motor 5 slides horizontally across the top of the switch cabinet body 1, causing the driving bevel gear 902 to engage with the left driven bevel gear 903 (this must be done with the left driven bevel gear 903 not rotating). Since the left driven bevel gear 903 and right driven bevel gear 904 are identical and symmetrically mounted on either side of the driving bevel gear 902, and they rotate coaxially via the transmission shaft 901, rotating one will also drive the other to rotate. Therefore, their rotational positions are consistent, and the driving bevel gear 902 can directly slide to engage with the left driven bevel gear 903, thereby causing the transmission shaft 901 to rotate in the opposite direction. This causes the two ventilation fan blades 909 to rotate in opposite directions, changing the direction from inward to outward airflow, and vice versa. This ensures that both sides can utilize the earliest available outside cold air, preventing one side's heat dissipation fins 7 from always using outside air already used by the other side, thus ensuring consistent heat dissipation on both sides.

[0041] When the airflow passes through the center of the hourglass-shaped connecting groove 801, the channel narrows and the wind force increases, causing the drive fan blade 804 to rotate on one side of the hourglass-shaped connecting groove 801. Since the drive fan blades 804 are installed symmetrically on both sides, when the airflow direction changes, the drive fan blade 804 on that side can be rotated by the airflow entering from that side. The drive fan blade 804 drives the rotating shaft 803 to rotate and causes the small bevel gear 805 to mesh with the large bevel gear 808, thereby driving the positive and negative thread screw 807 to rotate inside the detachable side plate 806. The connecting bracket 809 engages with the positive and negative thread screw 807 through the thread, thereby causing the wiping pad 811 at the bottom of the sliding support plate 810 to slide back and forth on both sides of the surface of the heat dissipation fins 7, wiping away and absorbing the water droplets that condense and slide off the surface of the heat dissipation fins 7. Then, the sliding support plate 810 drives the wiping pad 811 to slide down to both sides of the water-squeezing protrusion 812. As the thickness of the bottom of the water-squeezing protrusion 812 increases, and the wiping pad 811 is rigid and cannot move, the increased thickness of the water-squeezing protrusion 812 will squeeze the wiping pad 811, thereby squeezing out the water absorbed by the wiping pad 811 and letting it slide down and be collected inside the water collection box 813. Finally, it can be discharged outward through the drain valve 814.

[0042] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0043] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A highly protective switchgear with multi-layer shielded electromagnetic protection, comprising a switchgear body (1), characterized in that: Both sides of the switch cabinet body (1) are welded with sealing shells (2). The top of each of the two sealing shells (2) away from the switch cabinet body (1) is bolted with a ventilation window (3). The top of the switch cabinet body (1) and the sealing shells (2) are bolted with a fixing seat (4). A motor (5) is slidably connected to one side of the fixing seat (4). The interior of each of the two sealing shells (2) is provided with heat dissipation fins (7) welded to both sides of the switch cabinet body (1). The bottom of the switch cabinet body (1) is equipped with a water removal mechanism (8) that works in conjunction with the heat dissipation fins (7). The interior of each of the two ventilation windows (3) is equipped with a heat dissipation mechanism (9).

2. The high-protection switchgear with multi-layer shielded electromagnetic protection according to claim 1, characterized in that: The dewatering mechanism (8) includes an hourglass-shaped connecting groove (801) located at the bottom of the switch cabinet body (1) and communicating with the interiors of the two sealed housings (2). A fixing frame (802) is bolted to the interior of the hourglass-shaped connecting groove (801). Rotating shafts (803) are rotatably connected to both sides of the fixing frame (802). Drive fan blades (804) are symmetrically arranged on both sides of the fixing frame (802) and fixedly sleeved with the rotating shafts (803). Small bevel gears (805) are bolted to both ends of the rotating shafts (803). Detachable side plates (806) are bolted to the bottom of the two sealed housings (2). A threaded screw (807) is rotatably connected to the interior of the detachable side plate (806). The bottom of the threaded screw (807) is bolted to... A large bevel gear (808) meshes with a small bevel gear (805). The surface of the positive and negative threaded screw (807) is threaded with a connecting frame (809) that is slidably connected to a detachable side plate (806). A sliding support plate (810) is bolted to the side of the connecting frame (809) near the heat dissipation fins (7). A wiping pad (811) that is slidably connected to both sides of the surface of the heat dissipation fins (7) is bonded to the bottom of the sliding support plate (810). A water squeezing protrusion (812) that is slidably connected to the wiping pad (811) is welded to both sides of the hourglass-shaped connecting groove (801) at the bottom of the switch cabinet body (1). A water collection box (813) is bolted to the bottom of the inner cavity of the two sealing shells (2). A drain valve (814) is fixedly connected to one end of the water collection box (813).

3. A high-protection switchgear with multi-layer shielded electromagnetic protection according to claim 1, characterized in that: The heat dissipation mechanism (9) includes a drive shaft (901) rotatably connected to the fixed base (4). The output end of the motor (5) is bolted to a drive bevel gear (902). Both sides of the drive bevel gear (902) are symmetrically meshed with a left driven bevel gear (903) and a right driven bevel gear (904) that are fixedly sleeved on the surface of the drive shaft (901) and are completely identical. Both ends of the drive shaft (901) are also bolted to two end bevel gears (905). The ventilation window (3) has internal screws A support frame (906) is bolted to the support frame (906), and a connecting rod (907) is rotatably connected inside the support frame (906). A ventilation fan blade (909) is rotatably connected to the side of the support frame (906) near the heat dissipation fins (7). A fan blade bevel gear (910) is bolted to one end of the fan blade (909) inside the support frame (906). A transmission bevel gear (908) that meshes with the end bevel gear (905) and the fan blade bevel gear (910) is bolted to the top and bottom of the connecting rod (907).

4. A high-protection switchgear with multi-layer shielded electromagnetic protection according to claim 1, characterized in that: The top of the switch cabinet body (1) is provided with a guide groove (25) that is slidably connected to the motor (5). The fixed seat (4) is provided with a horizontal movement cylinder (6) that is bolted to the top of the switch cabinet body (1) on the side near the motor (5). The output end of the horizontal movement cylinder (6) is fixedly connected to one side of the motor (5).

5. A high-protection switchgear with multi-layer shielded electromagnetic protection according to claim 1, characterized in that: The switch cabinet body (1) has a handcart compartment (11), a busbar compartment (15), and a cable compartment (18) respectively. An instrument box (10) is bolted to the top of the handcart compartment (11) inside the switch cabinet body (1).

6. A high-protection switchgear with multi-layer shielded electromagnetic protection according to claim 5, characterized in that: The busbar compartment (15) is fixedly connected to a busbar bar (16). The busbar compartment (15) and the busbar bar (16) are both bolted to one end near the handcart compartment (11). A connecting wire bar (17) is bolted to one side of the busbar bar (16). The busbar bar (16) is electrically connected to the busbar terminal (19) through the connecting wire bar (17).

7. A high-protection switchgear with multi-layer shielded electromagnetic protection according to claim 6, characterized in that: The inside of the handcart compartment (11) is rotatably connected to a control screw (13), and the top of the control screw (13) is threaded with a circuit breaker (12) that is slidably connected to the inside of the handcart compartment (11). The back of the circuit breaker (12) is fixedly installed with a power-on terminal (14) that is slidably connected to the bus terminal (19).

8. A highly protective switchgear with multi-layer shielded electromagnetic protection according to claim 5, characterized in that: The cable compartment (18) is bolted with a current transformer (20), a line arrester (21), a grounding switch (22), and a zero-sequence transformer (23) that are electrically connected to each other. An instrument panel (24) is bolted to the side of the cable compartment (18) away from the line arrester (21).

9. A highly protective switchgear with multi-layer shielded electromagnetic protection according to claim 3, characterized in that: The two ventilation windows (3) are bolted to the side of the heat dissipation fins (7) with air guide louvers (26) that work in conjunction with the ventilation fan blades (909), and the two ventilation windows (3) are bolted to the side of the side of the ventilation windows (3) away from the air guide louvers (26) with protective mesh plates (27).

10. A highly protective switchgear with multi-layer shielded electromagnetic protection according to claim 5, characterized in that: The front of the switch cabinet body (1) is hinged with a sealed door (28) that works in conjunction with the handcart compartment (11) and the cable compartment (18).

Images