Busbar heat dissipation structure suitable for large current and low temperature rise

Abstract

This invention relates to the field of busbar heat dissipation technology, specifically to a busbar heat dissipation structure suitable for high current and low temperature rise. The structure includes a substation main body, within which a busbar is installed. A fire monitor is also installed inside the substation main body. A forced convection heat dissipation mechanism, consisting of a drive motor, fan, and ventilation ducts, dynamically adjusts the airflow according to the busbar's operating conditions, quickly dissipating the Joule heat generated by the high current operation of the busbar. This prevents excessive temperature rise and thermal runaway caused by localized heat accumulation in the enclosed space. Simultaneously, relying on the centrifugal force generated by changes in fan speed, an automatic filter cleaning mechanism is triggered, scraping and collecting impurities from the filter. This prevents airflow reduction and heat dissipation channel obstruction caused by filter blockage, delays the aging of busbar insulation supports, reduces the risk of short-circuit discharge, ensures the stable operation of the busbar and the overall substation equipment, and improves the stability of power supply.

Description

Technical Field

[0001] This invention relates to the field of busbar heat dissipation technology, specifically to a busbar heat dissipation structure suitable for high current and low temperature rise. Background Technology

[0002] Busbars, also known as busbars, are rectangular conductive materials typically made of copper or aluminum alloy. They are core conductive components in power equipment such as substations, switchgear, and prefabricated substations, used for collecting, distributing, and transmitting electrical energy. In the power system structure, busbars serve as the common electrical connection hub for each level of distribution circuit, enabling the unified interconnection of electrical equipment such as transformers, circuit breakers, and disconnectors. This allows for the centralized conduction and branch distribution of large currents. Their current-carrying capacity is significantly superior to that of conventional cables, making them an indispensable key conductive component in complete power installations.

[0003] As a crucial power supply facility, substations are vulnerable to fires caused by short circuits, arcing, or overheating that ignites insulation materials in their busbars. The inability to quickly and accurately suppress these fires allows them to spread rapidly within the substation's enclosed space, potentially leading to complete equipment failure, widespread power outages, and serious threats to the safety of the power system. Furthermore, existing busbars typically rely on conventional fans for rudimentary ventilation and heat dissipation. This method suffers from poor compatibility between the ventilation path and the busbar itself, resulting in low heat exchange efficiency. Heat generated under high current conditions is difficult to dissipate quickly, leading to localized heat accumulation within the enclosed space and causing excessive busbar temperature rise. Additionally, the filters in the ventilation system are easily clogged by dust and debris over long-term operation, significantly reducing ventilation volume and obstructing heat dissipation channels, further worsening the busbar's heat dissipation conditions. Sustained high temperatures significantly accelerate the aging and failure of busbar insulation supports, reducing equipment insulation performance and increasing the risk of short-circuit discharge. Summary of the Invention

[0004] The purpose of this invention is to provide a busbar heat dissipation structure suitable for high current and low temperature rise, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a busbar heat dissipation structure suitable for high current and low temperature rise, comprising a substation body, a busbar disposed inside the substation body, a fire detector disposed inside the substation body, a heat dissipation box disposed on the side wall of the substation body, a storage tank installed inside the heat dissipation box, a suction box disposed on the storage tank, a ventilation pipe connected to the suction box and the substation body, and a fire extinguishing and cooling mechanism disposed on the ventilation pipe, the fire extinguishing and cooling mechanism comprising a component rotatably connected to... A rotating rod is mounted on the ventilation duct. A top plug is fixedly connected to the rotating rod. A gear is fixedly connected to the end of the top plug. A baffle is fixedly connected to the gear. A magnetic block is embedded in the baffle. A side pipe is connected to the ventilation duct. A smoke box is fixedly connected inside the side pipe. A smoke spraying component is slidably connected through the smoke box. A smoke inlet is opened at the bottom of the smoke spraying component. The bottom of the smoke spraying component is sealed. A pressing spring is sleeved on the outer wall of the smoke spraying component. A magnetic ring is fixedly connected to the smoke spraying component. The magnetic poles of the magnetic ring and the magnetic block are the same.

[0006] Preferably, the storage box is internally connected to a branch pipe, the end of the branch pipe away from the storage box is connected to the interior of a ventilation pipe, and the end of the rotating rod located inside the branch pipe is fixedly connected to a bottom plug.

[0007] Preferably, a drive motor is fixedly connected inside the suction box, a transmission rod is fixedly connected to the output end of the drive motor, a fan is fixedly connected to the end of the transmission rod, and a cooling mechanism is provided on the transmission rod.

[0008] Preferably, the exhaust cooling mechanism includes slide rails fixedly connected to both sides of the transmission rod, an outward pusher is slidably connected inside the slide rail, a first platform and a second platform are provided on the outward pusher, a return spring is fixedly connected to the outer side wall of the outward pusher, and the end of the return spring away from the outward pusher contacts the inner wall of the slide rail, side plates are fixedly connected to both sides of the transmission rod, a top rod is slidably connected to the side plate, and a roller is provided at the end of the top rod.

[0009] Preferably, the bottom of the substation body is provided with a bottom groove, an outer ring is slidably connected inside the bottom groove, a return spring is fixedly connected to the outer side wall of the outer ring, the other end of the return spring is connected to the inner wall of the bottom groove, an inner ring is rotatably connected to the outer ring, and the end of the top rod away from the roller is fixedly connected to the inner ring.

[0010] Preferably, the substation body has bottom rails on both sides, and filter screens are slidably connected inside the two bottom rails. A push rod is fixedly connected between the filter screen and the outer ring. Threaded rods are rotatably connected to both sides of the filter screen. A cleaning component is threadedly sleeved on both threaded rods. A cleaning brush is fixedly connected inside the cleaning component. The cleaning brush contacts the surface of the filter screen. A sludge storage box is snapped into the cleaning component. A suction pipe is provided on the sludge storage box. A suction pump is provided inside the suction pipe. The end of the suction pipe away from the sludge storage box is connected to the cleaning brush.

[0011] Preferably, a toothed disc is fixedly connected to the bottom of each of the two threaded rods, and teeth are fixedly connected inside the bottom rail, with the teeth meshing with the toothed disc.

[0012] Preferably, a transverse plate is slidably connected through the suction box, and a rack is provided at the end of the transverse plate. The rack is meshed with a gear, and one end of the transverse plate located inside the suction box is fixedly connected to the outer ring.

[0013] Preferably, the substation body has ventilation grilles on its side walls, and both the substation body and the heat dissipation box have multiple flip doors. The heat dissipation box has spray holes.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The forced convection cooling mechanism, consisting of a drive motor, fan, and ventilation duct, can dynamically adjust the airflow according to the busbar's operating conditions, quickly dissipating the Joule heat generated by the high current operation of the busbar. This avoids excessive temperature rise and thermal runaway caused by localized heat accumulation in the enclosed space. Simultaneously, relying on the centrifugal force generated by the fan speed change, it triggers an automatic filter cleaning mechanism to scrape and clean the filter screen and collect impurities. This prevents airflow reduction and heat dissipation channel obstruction caused by filter screen blockage, delays the aging of busbar insulation support components, reduces the risk of short-circuit discharge, ensures the stable operation of the busbar and the overall substation equipment, and improves the stability of power supply.

[0016] 2. Through the setting of the fire extinguishing and cooling mechanism, when the main ballast short circuits and catches fire, the fire monitor will trigger a triple action of ventilation pipe sealing, precise heptafluoropropane injection, and colored smoke warning, which will quickly cut off the oxygen supporting the combustion, achieve efficient fire extinguishing and cooling, and guide personnel to evacuate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the planar structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 for Figure 3 Enlarged view of A in the middle; Figure 5 This is a schematic diagram of the internal structure of the ventilation duct of the present invention; Figure 6 This is a partial structural diagram of the suction box of the present invention; Figure 7 This is a schematic diagram of the planar structure of the push-out component of the present invention; Figure 8 This is a partial structural diagram of the suction box and storage tank of the present invention. Figure 1 ; Figure 9 for Figure 8 Enlarged view of B in the middle; Figure 10 This is a partial structural diagram of the suction box and storage tank of the present invention. Figure 2 ; Figure 11 This is a schematic diagram of the internal structure of the cleaning component of the present invention; Figure 12 This is a schematic diagram of the external structure of the present invention; Figure 13 This is a schematic diagram of the busbar structure of the present invention. The attached diagram lists the components represented by each number as follows: 1. Substation main body; 2. Ventilation grille; 3. Tilting door; 4. Busbar; 5. Heat sink; 6. Suction box; 7. Storage tank; 8. Ventilation duct; 9. Colored smoke box; 10. Branch pipe; 11. Bottom plug; 12. Horizontal sliding plate; 13. Rack; 14. Gear; 15. Top plug; 16. Rotating rod; 17. Baffle; 18. Side pipe; 19. Magnetic ring; 20. Pressing spring; 21. Smoke spraying component; 22. Smoke inlet; 23. Magnetic block; 24. Drive motor; 25. Transmission rod 26. Fan; 27. Slide rail; 28. Return spring; 29. ​​Top rod; 30. Roller; 31. Side plate; 32. Bottom groove; 33. Return spring; 34. Push rod; 35. Outer pusher; 36. Outer ring; 37. Inner ring; 38. Bottom rail; 39. First platform; 40. Second platform; 41. Filter screen; 42. Threaded rod; 43. Gear plate; 44. Teeth; 45. Cleaning component; 46. Cleaning brush; 47. Suction pipe; 48. Sludge collection box; 49. Spray nozzle. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0019] Example 1: Please refer to Figure 1 - Figure 13 A busbar heat dissipation structure suitable for high current and low temperature rise includes a substation body 1, a busbar 4 installed inside the substation body 1, a fire detector installed inside the substation body 1, a heat dissipation box 5 installed on the side wall of the substation body 1, a storage tank 7 installed inside the heat dissipation box 5, a suction box 6 installed on the storage tank 7, a ventilation pipe 8 connecting the suction box 6 and the substation body 1, and a fire extinguishing and cooling mechanism installed on the ventilation pipe 8. The fire extinguishing and cooling mechanism includes a rotating rod 16 rotatably connected to the ventilation pipe 8, and a fixedly connected component on the rotating rod 16. A top plug 15 is fixedly connected to a gear 14 at its end. A baffle 17 is fixedly connected to the gear 14. A magnetic block 23 is embedded in the baffle 17. A side pipe 18 is connected to the ventilation pipe 8. A smoke box 9 is fixedly connected inside the side pipe 18. A smoke spraying component 21 is slidably connected through the smoke box 9. A smoke inlet hole 22 is opened at the bottom of the smoke spraying component 21. The bottom of the smoke spraying component 21 is sealed. A pressing spring 20 is sleeved on the outer wall of the smoke spraying component 21. A magnetic ring 19 is fixedly connected to the smoke spraying component 21. The magnetic ring 19 has the same magnetic pole as the magnetic block 23.

[0020] The storage box 7 is internally connected to a branch pipe 10. The end of the branch pipe 10 away from the storage box 7 is connected to the interior of the ventilation pipe 8. The end of the rotating rod 16 located inside the branch pipe 10 is fixedly connected to a bottom plug 11.

[0021] A drive motor 24 is fixedly connected inside the suction box 6. A transmission rod 25 is fixedly connected to the output end of the drive motor 24. A fan 26 is fixedly connected to the end of the transmission rod 25. A ventilation and cooling mechanism is provided on the transmission rod 25.

[0022] In this embodiment, the substation body 1 houses all electrical components, making it a type of enclosed compact substation. During normal power supply operation of the substation body 1, the drive motor 24 operates stably at its rated power, driving the transmission rod 25 connected to its output end to rotate at a uniform speed. The rotation of the transmission rod 25 synchronously drives the coaxially mounted fan 26 to rotate. The negative pressure generated by the fan 26 continuously draws external air into the suction box 6. (It should be noted that the air inlet of the suction box 6 is equipped with a switching valve, not shown in the figure. When the busbar 4 has no cooling requirement, this switching valve automatically...) (Close the air inlet to reduce ineffective energy consumption) When external air enters the suction box 6, it is first filtered by the filter screen 41. Dust, lint and other impurities in the air are intercepted and attached to the surface of the filter screen 41, effectively preventing impurities from entering the substation body 1 and affecting the insulation performance and heat dissipation efficiency of electrical components. The clean air after being filtered by the filter screen 41 enters the ventilation duct 8 under the continuous push of the fan 26, and is blown to the busbar 4 through the ventilation duct 8 to form forced convection heat dissipation, ensuring that the temperature of the busbar 4 is maintained within the safe threshold and avoiding thermal runaway faults caused by overheating.

[0023] During operation, if busbar 4 catches fire due to a short circuit fault, generating extremely high temperatures, the fire detector installed inside the substation main body 1 will detect it promptly and immediately send an emergency control signal to the drive motor 24, increasing its operating power to its peak. This causes the drive transmission rod 25 and fan 26 to enter an ultra-high-speed rotation state (this is existing technology and will not be elaborated further). At this time, the ultra-high-speed rotation of the transmission rod 25 generates a huge centrifugal force, causing the pusher 35 to move significantly outward along the slide rail 27 until the roller 30 at the end of the top rod 29 contacts the second platform 40. The second platform 40 is higher than the first platform 39, and the lifting force it generates on the roller 30 causes the top rod 29 to move outward. Rod 29, inner ring 37, and outer ring 36 move significantly towards fan 26. The movement of outer ring 36 causes transverse plate 12 to move synchronously and significantly. When transverse plate 12 moves, the rack 13 fixed at its end fully meshes with gear 14, converting the linear motion of rack 13 into the rotational motion of gear 14. This causes rotating rod 16, fixedly connected to gear 14, to rotate 90 degrees. During the rotation of rotating rod 16, a triple linkage action is simultaneously achieved: First, the top plug 15 at the top of rotating rod 16 rotates 90 degrees with rotating rod 16, precisely sealing the front inlet of ventilation pipe 8, cutting off the external air supply channel to the substation body 1, and preventing oxygen from entering the substation body 1. First, the contact between the main drain 4 and the combustion chamber creates an oxygen-deficient environment for fire control. Second, the bottom plug 11 at the bottom of the rotating rod 16 rotates 90 degrees simultaneously, releasing the blockage at the inlet of the branch pipe 10. At this time, the extinguishing agent stored in the storage tank 7 is rapidly injected into the rear section of the ventilation pipe 8 through the branch pipe 10 under the impetus of high-pressure nitrogen, and sprayed along the pipe towards the main drain 4 to extinguish and cool the main drain 4. Third, when the gear 14 rotates, it will drive the baffle 17 to move away from the side pipe 18. After the magnetic block 23 embedded in the baffle 17 moves with the baffle 17, the distance between it and the magnetic ring 19 exceeds the range of magnetic force, and the repulsive magnetic force between the two disappears. The smoke spraying component 21 presses the spring 2. Under the elastic restoring force of 0, it pops upward, so that the smoke inlet 22 on the side wall of the smoke sprayer 21 completely enters the interior of the colored smoke box 9. At this time, the colored smoke agent in the colored smoke box 9 will enter the smoke sprayer 21 through the smoke inlet 22 and be sprayed out from the top nozzle. At the same time, the external air drawn by the fan 26 is blocked by the ventilation pipe 8 and all of it is turned into the side pipe 18. After mixing with the colored smoke sprayed out by the smoke sprayer 21, it is sprayed out at high speed from the outlet end of the side pipe 18, forming a conspicuous colored smoke column, which is sprayed out from the nozzle 49 to convey an emergency signal to the surrounding personnel that a short circuit fire has occurred in the busbar 4 inside the main body 1 of the substation, guiding the personnel to quickly evacuate to a safe area and avoid secondary injuries caused by the fire.

[0024] Example 2: Please refer to Figure 1 - Figure 13This embodiment further describes Example 1. The exhaust cooling mechanism includes slide rails 27 fixedly connected to both sides of the transmission rod 25. An outward pusher 35 is slidably connected inside the slide rails 27. A first platform 39 and a second platform 40 are provided on the outward pusher 35. A return spring 28 is fixedly connected to the outer wall of the outward pusher 35. The end of the return spring 28 away from the outward pusher 35 contacts the inner wall of the slide rail 27. Side plates 31 are fixedly connected to both sides of the transmission rod 25. A top rod 29 is slidably connected to the side plate 31. A roller 30 is provided at the end of the top rod 29.

[0025] The bottom of the substation body 1 is provided with a bottom groove 32. An outer ring 36 is slidably connected inside the bottom groove 32. A return spring 33 is fixedly connected to the outer side wall of the outer ring 36. The other end of the return spring 33 is connected to the inner wall of the bottom groove 32. An inner ring 37 is rotatably connected to the outer ring 36. The end of the top rod 29 away from the roller 30 is fixedly connected to the inner ring 37.

[0026] The substation body 1 has bottom rails 38 on both sides. Filter screens 41 are slidably connected inside the two bottom rails 38. Push rods 34 are fixedly connected between the filter screens 41 and the outer ring 36. Threaded rods 42 are rotatably connected to both sides of the filter screens 41. Cleaning components 45 are threadedly sleeved on the two threaded rods 42. Cleaning brushes 46 are fixedly connected inside the cleaning components 45. The cleaning brushes 46 are in contact with the surface of the filter screens 41. A sludge storage box 48 is snapped into the cleaning components 45. A suction pipe 47 is provided on the sludge storage box 48. A suction pump is provided inside the suction pipe 47. The end of the suction pipe 47 away from the sludge storage box 48 is connected to the cleaning brushes 46.

[0027] The bottom of each of the two threaded rods 42 is fixedly connected to a gear plate 43, and the bottom rail 38 is fixedly connected to a tooth 44, which is meshed with the gear plate 43.

[0028] A transverse plate 12 is slidably connected through the suction box 6. A rack 13 is provided at the end of the transverse plate 12. The rack 13 is meshed with the gear 14. One end of the transverse plate 12 located inside the suction box 6 is fixedly connected to the outer ring 36.

[0029] Ventilation grilles 2 are provided on the side walls of the substation body 1. Multiple flip doors 3 are provided on both the substation body 1 and the heat dissipation box 5. Spray holes 49 are provided on the heat dissipation box 5.

[0030] In this embodiment, during use, the busbar 4 inside the substation main body 1 is used at high power. When the above-mentioned exhaust convection cooling cannot effectively cool the busbar 4, the drive motor 24 will start at high power (this is prior art and will not be elaborated further), causing the transmission rod 25 to drive the fan 26 into a high-speed rotation state. At this time, the suction force is significantly increased compared to before, further improving the heat dissipation effect on the busbar 4. The centrifugal force generated by the fan 26 rotating at high speed is significantly increased, allowing the pusher 35 to overcome the elastic force of the return spring 28 and move outward along the slide rail 27 until the roller 30 contacts the surface of the first platform 39. After the roller 30 contacts the first platform 39, the first platform 39 forms a lifting force on the roller 30, pushing the push rod 29 and the inner ring 37 connected to its top to move towards the fan 26. When the inner ring 37 moves, it will drive the outer ring 36 to move synchronously. During the movement of the outer ring 36, it will overcome the resistance of the return spring 33 and push the filter screen 41 as a whole through the push rod 34. As the filter screen 41 moves outward from the suction box 6, the toothed disc 43 and teeth 44 mounted at its bottom mesh with each other. The toothed disc 43 rotates as the filter screen 41 moves, driving the threaded rod 42 connected to it to rotate. When the threaded rod 42 rotates, it drives the cleaning component 45 to move at a constant speed from top to bottom along the surface of the filter screen 41. The cleaning brush 46 fixed on the outside of the cleaning component 45 is in close contact with the surface of the filter screen 41, scraping off the attached dust and impurities. The dust generated by the scraping is sucked into the sludge collection box 48 by the suction pipe 47 for centralized collection. This automatic dust cleaning mechanism can effectively ensure the ventilation efficiency of the filter screen 41 in high dust environments and prevent it from failing to dissipate heat due to blockage. (It should be added that if dust accumulates again on the surface of the filter screen 41 after a single cleaning, the maintenance personnel can reduce the power of the drive motor 24 to reset the components and then repeat the above dust cleaning process to achieve multiple cleanings of the filter screen 41.) This prevents the filter screen 41 from becoming clogged and affecting the cooling effect on the busbar 4.

[0031] The extinguishing agent used in this technical solution is heptafluoropropane, which has highly efficient chemical suppression extinguishing performance. It achieves rapid fire extinguishing by inhibiting free radicals in the combustion reaction, and leaves no residue or sudden temperature change after extinguishing the fire. Meanwhile, the colored smoke agent used for external warning is formulated with food-grade colorant, which has stable chemical composition, is non-toxic and harmless, and will not have adverse effects on human health even when sprayed in densely populated areas. It combines the effectiveness of warning and the safety of use. At the same time, the suction box 6 is equipped with an inspection door on the outside. When the sludge storage box 48 is full, the inspection door can be opened to remove and clean the sludge storage box 48.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A busbar heat dissipation structure suitable for high current and low temperature rise, comprising a substation body (1), wherein a busbar (4) is provided inside the substation body (1), and a fire monitor is provided inside the substation body (1), characterized in that, A heat dissipation box (5) is provided on the side wall of the substation main body (1). A storage tank (7) is installed inside the heat dissipation box (5). A suction box (6) is installed on the storage tank (7). A ventilation pipe (8) is provided between the suction box (6) and the substation main body (1). A fire extinguishing and cooling mechanism is provided on the ventilation pipe (8). The fire extinguishing and cooling mechanism includes a rotating rod (16) rotatably connected to the ventilation pipe (8). A top plug (15) is fixedly connected to the rotating rod (16). A gear (14) is fixedly connected to the end of the top plug (15). A gear (14) is fixedly connected to the gear (14). A baffle (17) is embedded with a magnetic block (23). A side pipe (18) is connected to the ventilation pipe (8). A colored smoke box (9) is fixedly connected inside the side pipe (18). A smoke spraying component (21) is slidably connected through the colored smoke box (9). A smoke inlet hole (22) is opened at the bottom of the smoke spraying component (21). The bottom of the smoke spraying component (21) is sealed. A pressing spring (20) is sleeved on the outer wall of the smoke spraying component (21). A magnetic ring (19) is fixedly connected to the smoke spraying component (21). The magnetic ring (19) has the same magnetic pole as the magnetic block (23).

2. The busbar heat dissipation structure suitable for high current and low temperature rise according to claim 1, characterized in that: The storage tank (7) is internally connected to a branch pipe (10), and the end of the branch pipe (10) away from the storage tank (7) is connected to the interior of the ventilation pipe (8). The end of the rotating rod (16) located inside the branch pipe (10) is fixedly connected to a bottom plug (11).

3. The busbar heat dissipation structure suitable for high current and low temperature rise according to claim 1, characterized in that: The suction box (6) is fixedly connected to a drive motor (24), the output end of the drive motor (24) is fixedly connected to a transmission rod (25), the end of the transmission rod (25) is fixedly connected to a fan (26), and the transmission rod (25) is provided with a cooling mechanism.

4. A busbar heat dissipation structure suitable for high current and low temperature rise according to claim 3, characterized in that: The exhaust cooling mechanism includes slide rails (27) fixedly connected to both sides of the transmission rod (25). An external pusher (35) is slidably connected inside the slide rail (27). A first platform (39) and a second platform (40) are provided on the external pusher (35). A return spring (28) is fixedly connected to the outer wall of the external pusher (35). The end of the return spring (28) away from the external pusher (35) contacts the inner wall of the slide rail (27). Side plates (31) are fixedly connected to both sides of the transmission rod (25). A top rod (29) is slidably connected to the side plate (31). A roller (30) is provided at the end of the top rod (29).

5. A busbar heat dissipation structure suitable for high current and low temperature rise according to claim 4, characterized in that: The bottom of the substation body (1) is provided with a bottom groove (32). An outer ring (36) is slidably connected inside the bottom groove (32). A return spring (33) is fixedly connected to the outer side wall of the outer ring (36). The other end of the return spring (33) is connected to the inner wall of the bottom groove (32). An inner ring (37) is rotatably connected to the outer ring (36). The end of the top rod (29) away from the roller (30) is fixedly connected to the inner ring (37).

6. A busbar heat dissipation structure suitable for high current and low temperature rise according to claim 5, characterized in that: The main body (1) of the substation has bottom rails (38) on both sides. Filter screens (41) are slidably connected inside the two bottom rails (38). Push rods (34) are fixedly connected between the filter screens (41) and the outer ring (36). Threaded rods (42) are rotatably connected to both sides of the filter screens (41). Cleaning parts (45) are threaded together on the two threaded rods (42). Cleaning brushes (46) are fixedly connected inside the cleaning parts (45). The cleaning brushes (46) are in contact with the surface of the filter screens (41). A sludge storage box (48) is snapped into the cleaning parts (45). A suction pipe (47) is provided on the sludge storage box (48). A suction pump is provided inside the suction pipe (47). The end of the suction pipe (47) away from the sludge storage box (48) is connected to the cleaning brush (46).

7. A busbar heat dissipation structure suitable for high current and low temperature rise according to claim 6, characterized in that: The bottom of each of the two threaded rods (42) is fixedly connected to a toothed disc (43), and the bottom rail (38) is fixedly connected to a toothed disc (44), which is meshed with the toothed disc (43).

8. A busbar heat dissipation structure suitable for high current and low temperature rise according to claim 1, characterized in that: A transverse plate (12) is slidably connected through the suction box (6). A rack (13) is provided at the end of the transverse plate (12). The rack (13) and the gear (14) are meshed. One end of the transverse plate (12) inside the suction box (6) is fixedly connected to the outer ring (36).

9. A busbar heat dissipation structure suitable for high current and low temperature rise according to claim 1, characterized in that: The substation body (1) has ventilation grilles (2) on its side walls. Both the substation body (1) and the heat sink (5) are equipped with multiple flip doors (3). The heat sink (5) is equipped with spray holes (49).

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