Looped netowrk cabinet with heat dissipation structure

Abstract

The application discloses a ring main unit with a heat dissipation structure and belongs to the technical field of ring main unit equipment. Mainly comprising a ring main unit, the ring main unit is provided with a side plate, the side plate is provided with a heat dissipation window; a frame body, the frame body is provided with a window; a side cabinet, the side cabinet is provided with a fan; a liquid cooling mechanism, the liquid cooling mechanism comprises a liquid cooling plate, the liquid cooling plate is provided with a liquid cooling frame, the middle of the liquid cooling frame is provided with a liquid cooling net, the liquid cooling net is uniformly arranged by a plurality of layers of longitudinal and transverse staggered cooling pipes which are communicated at the head and tail, and uniform air holes for air flow are formed between the plurality of layers of longitudinal and transverse staggered cooling pipes. The ring main unit with the heat dissipation structure can be cooled by the fan and the liquid cooling assembly, the cooling mode of the air cooling and the liquid cooling is combined to carry out the cooling treatment, meanwhile, the liquid cooling assembly can continuously cool the hot air flow, so that the hot air flow is prevented from flowing into the surrounding air at a high temperature, and the overall heat dissipation of the ring main unit is beneficial.

Description

Technical Field

[0001] This application relates to the field of ring main unit equipment technology, specifically a ring main unit with a heat dissipation structure. Background Technology

[0002] A ring network refers to a ring-shaped distribution network, where the main power supply line forms a closed loop. The power supply source provides power to this ring main line, and then the power is distributed outwards through high-voltage switches one by one from the main line. A ring network cabinet is a switch cabinet (outgoing switch cabinet) installed on each distribution branch. The busbar of this switch cabinet is also part of the ring main line. In other words, the ring main line is composed of the busbars of each outgoing switch cabinet connected together. Each outgoing switch cabinet is called a ring network cabinet.

[0003] A ring main unit is a set of high-voltage switchgear, usually installed in a metal or non-metal insulated cabinet, or made into a modular ring main power supply unit. Its core components are load switches and fuses. It has the advantages of simple structure, small size, low price, improved power supply parameters and performance, and power supply safety. It is widely used in distribution stations and box-type substations in load centers such as urban residential areas, high-rise buildings, large public buildings, factories and enterprises.

[0004] Ring main units are intelligent power distribution equipment in power systems, suitable for use with smart grids and new power systems. They have functions such as fault analysis and data analysis. The internal components of ring main units contain a large number of cables, wires and electrical components made of environmentally friendly materials, and are low-carbon, energy-saving, and reduce energy consumption and pollution.

[0005] As a common piece of equipment in power systems, ring main units generate more and more heat as their power increases. In order to improve the reliability and safety of ring main units, reasonable heat dissipation is required; otherwise, their normal operation will be affected. Therefore, it is necessary to provide a ring main unit with a heat dissipation structure to solve the above problems.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0007] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a ring main unit with a heat dissipation structure, which achieves the effect of timely heat dissipation of the ring main unit.

[0008] The technical solution adopted by this application to solve its technical problem is as follows: a ring main unit with a heat dissipation structure, including a ring main unit, which has a side plate with heat dissipation windows for heat dissipation; a frame with windows; a side cabinet with a fan installed on its side; and a liquid cooling mechanism located inside the side cabinet between the frame and the fan. The liquid cooling mechanism includes: a baffle mounted on the frame; a seat plate mounted on the side of the baffle near the frame; and a liquid cooling plate with a liquid cooling frame mounted on the seat plate. A liquid cooling mesh is provided in the middle of the liquid cooling frame. The liquid cooling mesh is composed of multiple layers of crisscrossing and interconnected cooling pipes arranged uniformly, forming uniform ventilation holes between the multiple layers of crisscrossing cooling pipes for airflow. The liquid cooling frame is provided with an inlet pipe and an outlet pipe, both of which are connected to the cooling pipes in the liquid cooling mesh to facilitate the introduction and export of external refrigerant.

[0009] Furthermore, multiple sets of cylinders are installed at the bottom of the side cabinet, and a base is provided at the output end of the cylinder; the base is in a sealed sliding connection with the inner wall of the side cabinet; a cleaning plate is installed on the side of the base away from the cylinder, and a protrusion adapted to the vent hole is provided on the cleaning plate.

[0010] Furthermore, a guide post is installed on the base, and a second lug is installed at the other end of the liquid cooling frame. The guide post is adapted to pass through the second lug. A spring is installed between the second lug and the base, and the spring is sleeved on the outer ring of the guide post. A clearance hole is provided on the baffle.

[0011] Furthermore, a second gap is formed between the multiple sets of protrusions, and the bottom surface of the cleaning plate is provided with heat dissipation holes communicating with the second gap, and the base is provided with through grooves communicating with the heat dissipation holes.

[0012] Furthermore, a first lug is installed on one side of the liquid cooling frame, and a rod assembly is provided at the lower end of the first lug. A bracket is installed on the base, and a slide assembly is installed on the bracket. The slide assembly is adapted to approach or move away from the rod assembly and is adapted to cooperate with the rod assembly to control the position of the cleaning plate.

[0013] Furthermore, the rod assembly includes a seat mounted on the first lug, a rod rotatably mounted on the lower end of the seat, and a ball fixedly mounted on the lower end of the rod, the ball being elastic.

[0014] Furthermore, the slide assembly includes a slide plate mounted on the bracket, the slide plate having a vertically arranged first slide track; a second slide track is connected to the lower end of the first slide track, the second slide track being an inclined section, the bottom of the second slide track being lower than the bottom of the first slide track; a third slide track is connected to the end of the second slide track, the bottom of the third slide track being lower than the bottom of the second slide track; a first stopping point is provided at the connection between the second slide track and the third slide track, the first stopping point being located in the third slide track.

[0015] The ring main unit with a heat dissipation structure provided in this application has the following beneficial effects:

[0016] 1. By incorporating fans and liquid cooling components, the ring main unit can be cooled using a combination of air cooling and liquid cooling. At the same time, the liquid cooling components can continuously cool the hot airflow, thereby preventing the hot airflow from flowing into the surrounding air at a high temperature, which is beneficial to the overall heat dissipation of the ring main unit.

[0017] 2. By incorporating cylinders and cleaning plates, the liquid cooling components can be cleaned when needed. During cleaning, the liquid cooling components are only temporarily blocked, thus not significantly affecting the heat dissipation of the ring main unit.

[0018] 3. By setting up a rod assembly and slide assembly that cooperate with each other, as well as a base plate 23, the cleaned impurities can be discharged during the process of sealing the liquid cooling assembly, thereby purifying the hot airflow space.

[0019] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0021] In the attached diagram:

[0022] Figure 1 This is an overall schematic diagram of a ring main unit with a heat dissipation structure according to this application;

[0023] Figure 2 for Figure 1 Exploded view of the heat dissipation mechanism;

[0024] Figure 3 for Figure 2 Overall structural diagram of the liquid cooling assembly Figure 1 ;

[0025] Figure 4 for Figure 2 Overall structural diagram of the liquid cooling assembly Figure 2 ;

[0026] Figure 5 for Figure 2 A partial structural diagram at point A in the middle;

[0027] Figure 6 for Figure 3 Schematic diagram of the partial structure at point B;

[0028] Figure 7 for Figure 3 A schematic diagram of the partial structure at point C;

[0029] Figure 8 for Figure 4 A schematic diagram of the partial structure at point D;

[0030] Figure 9 for Figure 7 A schematic diagram of the overall structure of the center rod assembly;

[0031] Figure 10 for Figure 7 A schematic diagram of the overall structure of the middle slide rail assembly;

[0032] The following are the labeling elements in the figure:

[0033] 1. Ring main unit; 11. Side panel; 12. Frame; 121. Window;

[0034] 2. Heat dissipation mechanism; 21. Side cabinet; 22. Fan; 23. Base plate; 231. Low-position plate; 232. High-position plate; 233. Sloping plate;

[0035] 3. Liquid cooling mechanism; 31. Base; 311. Through groove; 32. Cylinder; 33. Seat plate; 34. Baffle; 341. Clearance hole; 35. Liquid cooling plate; 351. Liquid cooling frame; 352. Liquid cooling mesh; 353. Liquid inlet pipe; 354. First lug; 355. Second lug; 356. Liquid outlet pipe; 36. Bracket; 37. Guide post; 38. Cleaning plate; 381. Boss; 382. Heat dissipation hole; 39. Spring;

[0036] 4. Rod assembly; 41. Base; 42. Rod body; 43. Ball;

[0037] 5. Slide assembly; 51. Slide board; 52. First slide; 53. Second slide; 54. Third slide; 55. Fourth slide; 56. Fifth slide; 57. First stop; 58. Second stop; 59. Third stop. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0040] Example 1:

[0041] like Figure 1 As shown, this application provides a ring main unit with a heat dissipation structure, including a ring main unit 1. The ring main unit 1 is installed in the substations and box-type substations of load centers such as urban residential communities, high-rise buildings, large public buildings, and factories, and is mainly used for power supply.

[0042] like Figures 1-2 As shown, a side plate 11 is provided on the ring main unit 1. The side plate 11 is provided with a heat dissipation window (not shown in the figure) for heat dissipation. The heat generated inside the ring main unit 1 can be transferred to the outside through the heat dissipation window, thereby reducing the temperature of the ring main unit 1 and maintaining the normal operation of the ring main unit 1.

[0043] To further improve the heat dissipation effect of the ring main unit 1, a heat dissipation mechanism 2 is also provided on the side plate 11. This heat dissipation mechanism 2 is located at the heat dissipation window to accelerate and cool the hot airflow flowing out of the heat dissipation window. Specifically:

[0044] like Figures 1-2 As shown, the heat dissipation mechanism 2 includes a frame 12 fixedly installed on the side plate 11. The frame 12 is provided with a window 121 corresponding to the heat dissipation window. At the same time, a side cabinet 21 is also fixedly installed on the side plate 11. The side cabinet 21 is located on the outer ring of the frame 12 to completely enclose the frame 12. A fan 22 is installed on the side of the side cabinet 21. When the fan 22 is working, it is suitable for discharging the hot airflow from the window 121 into the surrounding air.

[0045] Because the surrounding air is in the same environment as the ring main unit 1, if the ambient air temperature rises, the cooling rate of the ring main unit 1 will also decrease. Therefore, it is necessary to cool the hot air discharged from the ring main unit 1. Figures 2-4As shown, a liquid cooling mechanism 3 is provided inside the side cabinet 21 between the frame 12 and the fan 22. The liquid cooling mechanism 3 includes a baffle 34 fixedly installed with the frame 12. A seat plate 33 is fixedly installed on the side of the baffle 34 near the frame 12. A liquid cooling plate 35 is installed on the side of the seat plate 33 near the frame 12. The liquid cooling plate 35 is adapted to the window 121 and is used to cool the hot airflow vented from the window 121.

[0046] like Figures 3-4 and Figure 6 As shown, the liquid cooling plate 35 includes a liquid cooling frame 351 fixedly installed with the base plate 33. A liquid cooling mesh 352 is provided in the middle of the liquid cooling frame 351. The liquid cooling mesh 352 is composed of multiple layers of crisscrossing cooling pipes that are connected end to end. It can be understood that a uniform first gap (hereinafter referred to as a vent hole) is formed between the multiple layers of crisscrossing cooling pipes to allow airflow to pass through. Furthermore, a through square hole (not shown in the figure) is provided in the middle of both the baffle 34 and the base plate 33, so that the hot airflow from the window 121 can reach the position of the fan 22 through the vent hole and the square hole.

[0047] To cool the hot airflow passing through the liquid cooling network 352, an inlet pipe 353 and an outlet pipe 356 are provided on the liquid cooling frame 351. Both the inlet pipe 353 and the outlet pipe 356 are connected to the cooling pipes in the liquid cooling network 352. Thus, external refrigerant can be introduced through the inlet pipe 353 and input into the cooling pipes. When the refrigerant is transported in the cooling pipes, it can come into contact with the hot airflow for heat exchange, thereby cooling the hot airflow. After the heat exchange is completed, the refrigerant is discharged through the outlet pipe 356. The refrigerant is input in this cycle to continuously cool the hot airflow, thereby preventing the hot airflow from flowing into the surrounding air at a high temperature, which is beneficial to the overall heat dissipation of the ring main unit 1.

[0048] Example 2:

[0049] During the long-term cooling process of the liquid cooling mesh 352, the vents may become clogged due to dust and other impurities. Mild clogging does not affect the heat dissipation function of the liquid cooling mesh 352, but when the vents are clogged in large quantities, the hot air cannot pass through the vents smoothly to exchange heat with the cooling pipes, thus affecting the heat dissipation of the ring main unit 1.

[0050] To solve the above problems, such as Figure 2 and Figure 4As shown, multiple sets of cylinders 32 are fixedly installed at the bottom of the side cabinet 21. A base 31 is provided at the output end of the cylinder 32, so that the base 31 is suitable to move closer to the liquid cooling mesh 352 under the drive of the cylinder 32. It should be noted that the base 31 is sealed and slidably connected to the inner wall of the side cabinet 21, and the output end of the cylinder 32 is in contact with the base 31 in the initial state, so that the base 31 can move closer to the liquid cooling mesh 352 when the cylinder 32 extends.

[0051] In order for the base 31 to return to its initial position, such as Figure 4 and Figure 8 As shown, a guide post 37 is fixedly installed on the base 31, and a second lug 355 is fixedly installed on the other end of the liquid cooling frame 351. The guide post 37 is adapted to pass through the second lug 355, and a spring 39 is fixedly installed between the second lug 355 and the base 31. The spring 39 is sleeved on the outer ring of the guide post 37.

[0052] Meanwhile, a clearance hole 341 is provided on the baffle 34 to allow the guide post 37 to pass. Thus, under the drive of the cylinder 32, the base 31 is suitable to move closer to the liquid cooling frame 351 and squeeze the spring 39. After the cylinder 32 retracts, the base 31 can be reset under the drive of the spring 39.

[0053] Meanwhile, a cleaning plate 38 is fixedly installed on the side of the base 31 away from the cylinder 32. The cleaning plate 38 is provided with a boss 381 that matches the vent hole, so that the cleaning plate 38 can move synchronously with the base 31 and pass through the vent hole through the boss 381 to clean the vent hole.

[0054] It should be noted that because the cleaning plate 38 is provided with spaced protrusions 381, a second gap (not shown in the figure) is formed between multiple sets of protrusions 381. At the same time, a heat dissipation hole 382 communicating with the second gap is provided on the bottom surface of the cleaning plate 38, and a through groove 311 communicating with the heat dissipation hole 382 is provided on the base 31. Thus, when the cleaning plate 38 is in the initial position, the hot air can be guided towards the fan 22 through the second gap and the through groove 311, so as not to affect the heat dissipation of the ring main unit 1. Furthermore, because the time it takes for the protrusions 381 to enter the vent during cleaning is short, the brief blockage during cleaning will not have a significant impact on the heat dissipation effect of the ring main unit 1.

[0055] Example 3:

[0056] Although the above method can clean the liquid cooling mesh 352, the removed impurities will still remain in the ring main unit 1 after cleaning. This will not only affect the normal operation of the ring main unit 1, but may also cause the liquid cooling mesh 352 to clog again in a short period of time.

[0057] To solve the above problems, such as Figures 7-10 As shown, a first lug 354 is fixedly installed on one side of the liquid cooling frame 351. A rod assembly 4 is provided at the lower end of the first lug 354. At the same time, a bracket 36 is fixedly installed on the base 31. A slide assembly 5 is installed on the bracket 36. The slide assembly 5 is adapted to approach or move away from the rod assembly 4 and is adapted to cooperate with the rod assembly 4 to control the position of the cleaning plate 38. Specifically:

[0058] like Figures 9-10 As shown, the rod assembly 4 includes a seat 41 fixedly mounted on a first lug 354, a rod 42 rotatably mounted on the lower end of the seat 41, and a ball 43 fixedly mounted on the lower end of the rod 42. The ball 43 is elastic, so that the ball 43 can adaptively switch between steps of different heights.

[0059] The slide assembly 5 includes a slide plate 51 fixedly mounted on a bracket 36. The slide plate 51 has a vertically arranged first slide 52. In the initial state, the ball 43 is located at the upper end of the first slide 52, and the cleaning plate 38 is located away from the liquid cooling mesh 352.

[0060] Continue to refer to Figure 10 A second slide 53 is connected to the lower end of the first slide 52. The second slide 53 is an inclined slide, and the bottom of the second slide 53 is lower than the bottom of the first slide 52. Thus, the ball 43 is suitable to slide from the first slide 52 into the second slide 53, but cannot return from the second slide 53 to the first slide 52.

[0061] Meanwhile, at the end of the second slide 53, there is an inclined third slide 54. The bottom of the third slide 54 is lower than the bottom of the second slide 53, so that the ball 43 is suitable to slide from the second slide 53 into the third slide 54, but cannot return from the third slide 54 to the second slide 53. A first stopping point 57 is provided at the connection between the second slide 53 and the third slide 54. The first stopping point 57 is located in the third slide 54.

[0062] Furthermore, a fourth slide 55 is connected to the end of the third slide 54. The fourth slide 55 is an inclined slide, and the bottom of the fourth slide 55 is lower than the bottom of the third slide 54. Thus, the ball 43 is suitable to slide from the third slide 54 into the fourth slide 55, but cannot return from the fourth slide 55 to the third slide 54. A second stopping point 58 is provided at the connection between the third slide 54 and the fourth slide 55. The second stopping point 58 is located in the fourth slide 55.

[0063] Thus, when the cylinder 32 drives the cleaning plate 38 to approach the liquid cooling frame 351, the ball 43 simultaneously enters the second slide 53 along the first slide 52, and as the cylinder 32 reaches the limit position, the ball 43 reaches the first stag point 57. At this time, the protrusion 381 on the cleaning plate 38 passes through the vent hole and protrudes from the vent hole to clean the vent hole.

[0064] Then cylinder 32 begins to retract. At this time, cleaning plate 38 retracts synchronously with base 31 under the action of spring 39. However, ball 43 will start to move along the third slide 54. When ball 43 reaches the position of the second stop 58, ball 43 is restricted and cannot continue to move.

[0065] At this time, because the skateboard 51 is hooked by the ball 43, the cleaning board 38 cannot move synchronously, which causes the boss 381 to stay in the vent hole and block the vent hole.

[0066] Because the impurities generated during the cleaning of boss 381 are present in the hot airflow and cannot pass through the vent, in order to remove the impurities, such as Figure 2 and Figure 5 As shown, a base plate 23 is fixedly installed on the inner bottom of the side cabinet 21. The base plate 23 is divided into a low plate 231 near the liquid cooling frame 351, a high plate 232 near the fan 22, and an inclined plate 233 connecting the low plate 231 and the high plate 232. Thus, in the initial state, the base 31 is in sealed contact with the high plate 232, and the base 31 is connected to the other three inner surfaces of the side cabinet 21 by sealed slides.

[0067] As the base 31 approaches the liquid cooling frame 351 under the action of the cylinder 32, the base 31 will slowly pass over the high plate 232 and reach the position of the low plate 231 via the inclined plate 233. At this time, a third gap (not shown in the figure) is formed between the base 31 and the low plate 231, and the vent is blocked by the boss 381, so the hot air can only flow to the position of the fan 22 through the third gap.

[0068] At the same time, the impurities generated during cleaning also flow out from the third gap along with the hot airflow, thereby purifying and cleaning the hot airflow chamber. Impurities entering the fan 22 position can be intercepted by adding a filter screen to the fan 22 and then removed manually. This cleaning work is relatively easy and will not increase the burden on the staff.

[0069] To reset the cleaning plate 38 and unblock the vents, continue referring to... Figure 10 At the end of the fourth slide 55, there is a fifth slide 56, which is divided into a first section connected to the fourth slide 55 and a second section connected to the first slide 52.

[0070] The first section is a channel with the bottom of the groove at the same height, and the bottom of the first section is lower than the bottom of the fourth slide 55, so that the ball 43 is suitable to slide into the first section from the fourth slide 55, but cannot return from the first section to the fourth slide 55. A third stopping point 59 is provided at the connection between the fourth slide 55 and the first section. The third stopping point 59 is located in the first section and is flush with the first stopping point 57.

[0071] Meanwhile, the second section is a channel with an inclined bottom. The bottom of the second section gradually rises along the direction close to the first slide 52, and a step is formed at the connection between the second section and the first slide 52, so that the sphere 43 is suitable to slide from the second section into the first slide 52, but cannot return from the first slide 52 to the second section.

[0072] In summary, when the cylinder 32 extends again and moves against the base 31, the ball 43 will pass through the fourth slide 55 to reach the third stagnation point 59, and when the cylinder 32 retracts, the ball 43 will return to the initial position of the first slide 52 through the fifth slide 56.

[0073] At this point, the base 31 will return to its initial position under the action of the spring 39, so as to facilitate the next cleaning operation.

[0074] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A ring main unit with a heat dissipation structure, characterized in that: include: Ring main unit (1), the ring main unit (1) has a side plate (11), the side plate (11) is provided with heat dissipation windows for heat dissipation; A frame (12) is fixedly installed on a side panel (11), and a window (121) corresponding to the heat dissipation window is provided on the frame (12). A side cabinet (21) is also fixedly installed on the side panel (11). The side cabinet (21) is set on the outer ring of the frame (12) to completely enclose the frame (12). A fan (22) is installed on the side of the side cabinet (21). When the fan (22) is working, it is suitable for exhausting the hot airflow from the window (121) into the surrounding air through the fan (22). A liquid cooling mechanism (3) is disposed inside the side cabinet (21) between the frame (12) and the fan (22). The liquid cooling mechanism (3) includes: A baffle (34) is mounted on the frame (12); A seat plate (33) is mounted on the side of the baffle (34) near the frame (12); Liquid cooling plate (35), which has a liquid cooling frame (351) installed with the base plate (33), and a liquid cooling mesh (352) is provided in the middle of the liquid cooling frame (351). The liquid cooling mesh (352) is composed of multiple layers of crisscrossing and connected cooling pipes evenly arranged, forming uniform air vents between the multiple layers of crisscrossing cooling pipes for airflow to pass through. The liquid cooling frame (351) is provided with an inlet pipe (353) and an outlet pipe (356), both of which are connected to the cooling pipe in the liquid cooling mesh (352) to facilitate the introduction and export of external refrigerant. Multiple sets of cylinders (32) are installed at the bottom of the side cabinet (21), and a base (31) is provided at the output end of the cylinder (32). The base (31) and the inner wall of the side cabinet (21) are in a sealed sliding connection; A cleaning plate (38) is installed on the side of the base (31) away from the cylinder (32), and the cleaning plate (38) is provided with a boss (381) adapted to the vent hole. A second gap is formed between multiple sets of the bosses (381), and the bottom surface of the cleaning plate (38) is provided with a heat dissipation hole (382) communicating with the second gap. The base (31) is provided with a through groove (311) communicating with the heat dissipation hole (382). A base plate (23) is fixedly installed on the inner bottom of the side cabinet (21). The base plate (23) is divided into a low plate (231) near the liquid cooling frame (351), a high plate (232) near the fan (22), and an inclined plate (233) connecting the low plate (231) and the high plate (232). In the initial state, the base (31) is in sealed contact with the high plate (232), and the base (31) is connected to the other three inner surfaces of the side cabinet (21) by a sealed slide. As the base (31) approaches the liquid cooling frame (351) under the action of the cylinder (32), the base (31) passes over the high plate (232) and reaches the position of the low plate (231) via the inclined plate (233). At this time, a third gap is formed between the base (31) and the low plate (231). The vent is blocked by the boss (381), and the hot air can only flow to the position of the fan (22) through the third gap.

2. A ring main unit with a heat dissipation structure according to claim 1, characterized in that: A guide post (37) is installed on the base (31), and a second lug (355) is installed at the other end of the liquid cooling frame (351). The guide post (37) is adapted to pass through the second lug (355). A spring (39) is installed between the second lug (355) and the base (31). The spring (39) is sleeved on the outer ring of the guide post (37). The baffle (34) is provided with a clearance hole (341) to avoid the guide post (37).

3. A ring main unit with a heat dissipation structure according to claim 2, characterized in that: A first lug (354) is installed on one side of the liquid cooling frame (351), and a rod assembly (4) is provided at the lower end of the first lug (354). A bracket (36) is installed on the base (31), and a slide assembly (5) is installed on the bracket (36). The slide assembly (5) is adapted to be close to or away from the rod assembly (4) and is adapted to cooperate with the rod assembly (4) to control the position of the cleaning plate (38).

4. A ring main unit with a heat dissipation structure according to claim 3, characterized in that: The rod assembly (4) includes a seat (41) mounted on the first lug (354), a rod (42) rotatably mounted on the lower end of the seat (41), and a ball (43) fixedly mounted on the lower end of the rod (42), the ball (43) being elastic.

5. A ring main unit with a heat dissipation structure according to claim 4, characterized in that: The slide assembly (5) includes a slide plate (51) mounted on the bracket (36), the slide plate (51) having a vertically arranged first slide plate (52).

6. A ring main unit with a heat dissipation structure according to claim 5, characterized in that: The lower end of the first slide (52) is connected to a second slide (53), which is an inclined slide. The bottom of the second slide (53) is lower than the bottom of the first slide (52).

7. A ring main unit with a heat dissipation structure according to claim 6, characterized in that: The end of the second slide (53) is connected to an inclined third slide (54). The bottom of the third slide (54) is lower than the bottom of the second slide (53). A first stopping point (57) is provided at the connection between the second slide (53) and the third slide (54). The first stopping point (57) is located in the third slide (54).

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