Switch equipment for power supply system of new energy automobile and use method of switch equipment

Abstract

The invention discloses a switch device for a new energy automobile power supply system and a use method thereof. The switch device comprises a switch cabinet body. A heat dissipation mechanism is arranged in the switch cabinet body; the heat dissipation mechanism comprises a water storage tank, a circulating tank and two water turbines; a circulating pump is arranged in the circulating box; the circulating pump communicates with the water storage tank through a circulating water pipe; the two water turbines are symmetrically arranged on the left and right sides in the switch cabinet body; a water inlet and a water outlet of the water turbine are respectively communicated with the water storage tank and the circulating tank through radiating pipes; a plurality of fixing frames are uniformly distributed on one side, close to the inner wall of the switch cabinet body, of the radiating pipe A plurality of cooling fans are rotationally connected to the fixing frame. One end of the water turbine rotor is provided with a driving shaft; the driving shaft is in transmission connection with the cooling fan through a transmission assembly. Through cooperation of the water storage tank, the circulation box, the water turbine, the heat dissipation pipe, the heat dissipation fan, the driving shaft and the transmission assembly, the heat dissipation effect can be effectively improved, and therefore the situation that the temperature in the cabinet body is too high, and consequently electrical components are damaged can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of switchgear equipment, and more particularly to a switchgear for a new energy vehicle power supply system and a method of using the same. Background Art

[0002] Switchgear's primary function is to open and close, control, and protect electrical equipment during power generation, transmission, distribution, and conversion. It's an integral part of new energy vehicle power supply systems. However, existing switchgear in new energy vehicle power supply systems typically relies on heat dissipation holes, which is ineffective. Prolonged operation can easily cause the internal temperature of the switchgear to overheat, potentially damaging internal electrical components. Summary of the Invention

[0003] In view of this, the present invention provides a switch device for a new energy vehicle power supply system and a method of using the same, the purpose of which is to solve the problems in the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A switchgear for a new energy vehicle power supply system comprises: a switch cabinet body; a heat dissipation mechanism is provided inside the switch cabinet body; the heat dissipation mechanism comprises a water tank, a circulation box and two turbines; the water tank and the circulation box are respectively arranged at the top and bottom ends of the switch cabinet body; a circulation pump is provided in the circulation box; the circulation pump is connected to the water tank through a circulation water pipe; the two turbines are symmetrically arranged on the left and right sides of the switch cabinet body; the water inlet and water outlet of the turbine are respectively connected to the water tank and the circulation box through a heat dissipation pipe; the heat dissipation pipe is provided with a plurality of fixing brackets on one side close to the inner wall of the switch cabinet body; a plurality of cooling fans are rotatably connected to the fixing bracket; a drive shaft is provided at one end of the rotor of the turbine; the drive shaft is transmission-connected to the cooling fan through a transmission assembly.

[0006] Preferably, the transmission assembly includes a first driving bevel gear, two first driven bevel gears, two first rotating shafts, a second driving bevel gear, a second driven bevel gear, a driving gear and a driven gear; the first driving bevel gear is arranged on the driving shaft; the two first rotating shafts are symmetrically arranged on the upper and lower sides of the driving shaft; each first rotating shaft is provided with a first driven bevel gear; the first driven bevel gear is meshed with the first driving bevel gear; the first rotating shaft is provided with a plurality of second driving bevel gears; the second driving bevel gears are the same in number as the fixed frame and are arranged one-to-one; the driving gear is rotatably connected to the fixed frame through the second rotating shaft; the second driven bevel gear is provided on the second rotating shaft; the second driven bevel gear is meshed with the second driving bevel gear; the cooling fan is rotatably connected to the fixed frame through a third rotating shaft; the multiple cooling fans on the same fixed frame are evenly distributed on both sides of the second rotating shaft; the third rotating shaft is provided with the driven gear; the driving gear is meshed with the adjacent driven gear; and the adjacent two driven gears are meshed and connected.

[0007] Preferably, a plurality of heat dissipation holes are provided on both the left and right sides of the switch cabinet body; a fixing frame corresponding to the heat dissipation holes is provided on the left and right outer walls of the switch cabinet body; a filter is provided on the side of the fixing frame away from the switch cabinet body.

[0008] Preferably, the drive shaft extends to the outside of the switch cabinet body away from one end of the turbine and is provided with a first pulley; a fourth rotating shaft is rotatably connected at the middle position of the filter screen; a scraper and a second pulley are respectively provided at both ends of the fourth rotating shaft; the scraper is arranged on the side of the filter screen away from the switch cabinet body; the second pulley is arranged inside the fixed frame; the first pulley is connected to the second pulley through a synchronous belt.

[0009] Preferably, the multiple heat dissipation holes on the same side of the switch cabinet body are distributed in a circular array; a sealing disk is rotatably connected to the inner wall of the switch cabinet body; a plurality of through holes are opened on the sealing disk; the multiple through holes are distributed in a circular array; the number of the through holes is the same as the heat dissipation holes; a driving mechanism for driving the sealing disk to rotate is provided on the inner wall of the switch cabinet body.

[0010] Preferably, the driving mechanism includes a motor and a driving gear; the motor is arranged on the inner wall of the switch cabinet body; the driving gear is arranged at the output end of the motor; and the outer surface of the sealing disk is provided with external teeth meshing with the driving gear.

[0011] Preferably, the sealing disk is provided with a plurality of guide grooves on the side close to the heat dissipation hole; the plurality of guide grooves are distributed in a circular array; the guide grooves and the through holes are staggered; a guide plate is slidably connected in the guide groove; a sealing strip is provided on the side of the guide plate close to the heat dissipation hole; the cross-section of the sealing strip is arc-shaped; a plurality of springs are fixedly connected to the side of the guide plate away from the heat dissipation hole; the other end of the spring is fixedly connected to the inner wall of the guide groove.

[0012] Preferably, a plurality of positioning grooves adapted to the sealing strips are provided on the inner walls on both the left and right sides of the switch cabinet body; the positioning grooves and the heat dissipation holes are arranged in an alternating manner.

[0013] Preferably, the heat dissipation pipe is a serpentine structure.

[0014] A method for using a switch device for a new energy vehicle power supply system, using the switch device for a new energy vehicle power supply system, comprises the following steps:

[0015] S1: Add appropriate amount of cold water to the water storage tank and circulation tank respectively;

[0016] S2: Start the circulation pump to allow the cold water in the water tank to flow into the circulation box through the heat dissipation pipe and then flow back to the water tank through the circulating water pipe, forming a cycle. During this process, the heat dissipation pipe cools down the interior of the switchgear.

[0017] S3: During the cooling process of the heat pipe, cold water flows through the turbine and drives the turbine rotor to rotate. The turbine rotor drives the drive shaft to rotate, and the drive shaft drives the cooling fan to rotate through the transmission assembly.

[0018] Compared with the prior art, the present invention has achieved the following technical effects: the present invention can effectively improve the heat dissipation effect by coordinating the water storage tank, circulation box, turbine, heat pipe, heat dissipation fan, drive shaft and transmission assembly, thereby avoiding damage to electrical components caused by excessively high temperature inside the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a switch device for a new energy vehicle power supply system according to the present invention;

[0020] Figure 2 Schematic diagram of the internal structure of the fixed frame;

[0021] Figure 3 Schematic diagram of the internal structure of the sealing disk;

[0022] Figure 4 is a schematic diagram of a sealing disk;

[0023] Figure 5 This is a schematic diagram of the heat dissipation holes and positioning slots;

[0024] In the figure: 1. switch cabinet body; 2. water storage tank; 3. circulation box; 4. turbine; 5. heat pipe; 6. fixing frame; 7. cooling fan; 8. drive shaft; 9. first driving bevel gear; 10. first driven bevel gear; 11. first rotating shaft; 12. second driving bevel gear; 13. second driven bevel gear; 14. driving gear; 15. driven gear; 16. second rotating shaft; 17. third rotating shaft; 18. heat dissipation hole; 19. fixing frame; 20. filter screen; 21. first pulley; 22. fourth rotating shaft; 23. scraper; 24. second pulley; 25. synchronous belt; 26. sealing disk; 27. through hole; 28. motor; 29. ​​drive gear; 30. guide groove; 31. guide plate; 32. sealing strip; 33. spring; 34. positioning groove; 35. fixing plate; 36. shield; 37. limit block; 38. limit groove. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Reference Figure 1-5As shown, a switchgear for a new energy vehicle power supply system comprises: a switch cabinet body 1; a heat dissipation mechanism is provided inside the switch cabinet body 1; the heat dissipation mechanism comprises a water storage tank 2, a circulation box 3 and two turbines 4; the water storage tank 2 and the circulation box 3 are respectively arranged at the top and bottom ends of the switch cabinet body 1; a circulation pump is provided in the circulation box 3; the circulation pump is connected to the water storage tank 2 through a circulation water pipe; two turbines 4 are symmetrically arranged on the left and right sides of the switch cabinet body 1; the water inlet and outlet of the turbine 4 are respectively connected to the water storage tank 2 and the circulation box 3 through a heat dissipation pipe 5; a plurality of fixing brackets 6 are arranged on one side of the heat dissipation pipe 5 close to the inner wall of the switch cabinet body 1; the fixing bracket 6 is fixedly connected to the inner wall of the switch cabinet body 1; a plurality of cooling fans 7 are rotatably connected to the fixing bracket 6; the rotor of the turbine 4 is close to the switch A drive shaft 8 is provided at one end of the inner wall of the cabinet body 1; the other end of the drive shaft 8 is rotatably connected to the inner wall of the switch cabinet body 1; the drive shaft 8 is connected to the cooling fan 7 through a transmission component; when in use, the cold water in the water storage tank 2 flows into the circulation box 3 through the heat dissipation pipe 5, and the circulation pump is started at the same time to draw the recycled water in the circulation box 3 back to the water storage tank 2 through the circulation water pipe to form a circulation. In this process, the cold water flowing through the heat dissipation pipe 5 cools the inside of the switch cabinet body 1, and at the same time, the cold water flows through the inside of the turbine 4 and drives the rotor of the turbine 4 to rotate. The rotor of the turbine 4 drives the drive shaft 8 to rotate, and the drive shaft 8 drives the cooling fan 7 to rotate through the transmission component. The cooling fan 7 blows air, which can further improve the cooling effect, thereby effectively avoiding damage to electrical components inside the cabinet due to excessive temperature.

[0027] The above technical solution can effectively improve the heat dissipation effect by coordinating the water storage tank, circulation box, turbine, heat pipe, cooling fan, drive shaft and transmission components, thereby avoiding damage to electrical components due to excessive temperature inside the cabinet.

[0028] In this embodiment, the transmission assembly includes a first driving bevel gear 9, two first driven bevel gears 10, two first rotating shafts 11, a second driving bevel gear 12, a second driven bevel gear 13, a driving gear 14 and a driven gear 15; the first driving bevel gear 9 is arranged on the driving shaft 8; the two first rotating shafts 11 are symmetrically arranged on the upper and lower sides of the driving shaft 8; each first rotating shaft 11 is provided with a first driven bevel gear 10; the first driven bevel gear 10 is meshed with the first driving bevel gear 9; a plurality of second driving bevel gears 12 are provided on the first rotating shaft 11; the second driving bevel gears 12 are the same in number as the fixing frame 6, and are arranged one-to-one; the driving gear 14 is rotatably connected to the fixing frame 6 through the second rotating shaft 16; the second driven bevel gear 13 is provided on the second rotating shaft 16; the second driven bevel gear 13 is meshed with the second driving bevel gear 12; the cooling fan 7 is connected to the fixing frame 6 through the third rotating shaft 16 The rotating shaft 17 is rotatably connected to the fixing frame 6; multiple cooling fans 7 on the same fixing frame 6 are evenly distributed on both sides of the second rotating shaft 16; a driven gear 15 is provided on the third rotating shaft 17; the driving gear 14 is meshed with the adjacent driven gear 15; the two adjacent driven gears 15 are meshed and connected; when in use, the cold water drives the rotor of the turbine 4 to rotate, the rotor of the turbine 4 drives the driving shaft 8 to rotate, the driving shaft 8 drives the first driving bevel gear 9 to rotate, the first driving bevel gear 9 drives the first rotating shaft 11 to rotate through the first driven bevel gear 10, the first rotating shaft 11 drives the second driving bevel gear 12 to rotate, the second driving bevel gear 12 drives the second rotating shaft 16 to rotate through the second driven bevel gear 13, the second rotating shaft 16 drives the driving gear 14 to rotate, the driving gear 14 drives the driven gear 15 to rotate, and the driven gear 15 drives the cooling fan 7 to rotate through the third rotating shaft 17.

[0029] In this embodiment, fixed plates 35 are symmetrically provided on the upper and lower sides of the first driving bevel gear 9; one end of the first rotating shaft 11 is rotatably connected to the inner wall of the switch cabinet body 1, and the other end of the first rotating shaft 11 is rotatably connected to the corresponding fixed plate 35; fixed columns are provided on the upper and lower outer walls of the turbine 4; the other ends of the fixed columns are fixedly connected to the corresponding fixed plates 35.

[0030] In this embodiment, a plurality of heat dissipation holes 18 are provided on both sides of the switch cabinet body 1 for heat dissipation; a fixing frame 19 corresponding to the heat dissipation holes 18 is provided on the outer walls of the left and right sides of the switch cabinet body 1; a filter 20 is provided on the side of the fixing frame 19 away from the switch cabinet body 1 to play a dust-proof role.

[0031] In this embodiment, the drive shaft 8 extends to the outside of the switch cabinet body 1 at one end away from the turbine 4 and is provided with a first pulley 21; the fourth rotating shaft 22 is rotatably connected at the middle position of the filter screen 20; a scraper 23 and a second pulley 24 are respectively provided at both ends of the fourth rotating shaft 22; the scraper 23 is arranged on the side of the filter screen 20 away from the switch cabinet body 1; the second pulley 24 is arranged inside the fixed frame 19; the first pulley 21 is connected to the second pulley 24 through a synchronous belt 25; when in use, the drive shaft 8 drives the first pulley 21 to rotate during rotation, the first pulley 21 drives the second pulley 24 to rotate through the synchronous belt 25, the second pulley drives the fourth rotating shaft 22 to rotate, and the fourth rotating shaft 22 drives the scraper 23 to rotate, and the scraper 23 scrapes off dust and other debris on the surface of the filter screen 20 to avoid clogging of the filter screen 20, thereby ensuring ventilation and heat dissipation effects.

[0032] In this embodiment, a protective cover 36 is provided on the outer side wall of the switch cabinet body 1 ; the first pulley 21 is disposed inside the protective cover 36 .

[0033] In this embodiment, multiple heat dissipation holes 18 on the same side of the switch cabinet body 1 are distributed in a circular array; a sealing disk 26 is rotatably connected to the inner wall of the switch cabinet body 1; a plurality of through holes 27 are opened on the sealing disk 26; the multiple through holes 27 are distributed in a circular array; the number of through holes 27 is the same as the heat dissipation holes 18; a driving mechanism for driving the sealing disk 26 to rotate is provided on the inner wall of the switch cabinet body 1; when the humidity in the external air is high, the sealing disk 26 is driven by the driving mechanism to rotate a certain angle so that the through holes 27 are staggered with the heat dissipation holes 18, so that the sealing disk 26 is used to seal the heat dissipation holes 18 to prevent external moisture from entering the interior of the switch cabinet body 1, thereby keeping the interior of the switch cabinet body 1 dry. When the humidity of the external air decreases, the sealing disk 26 is driven by the driving mechanism to rotate so that the through holes 27 correspond to the heat dissipation holes 18.

[0034] In this embodiment, the driving mechanism includes a motor 28 and a driving gear 29; the motor 28 is arranged on the inner wall of the switch cabinet body 1; the driving gear 29 is arranged at the output end of the motor 28; the outer surface of the sealing disk 26 is provided with external teeth that are meshed with the driving gear 29; when in use, the motor 28 drives the driving gear 29 to rotate, and the driving gear 29 drives the sealing disk 26 to rotate.

[0035] When the sealing plate 31 is in the closed position, the sealing strip 32 is in the closed position, and the sealing strip 32 is in the closed position.

[0036] In this embodiment, limit blocks 37 are symmetrically provided on both sides of the guide plate 31; a limit groove 38 adapted to the limit block 37 is opened on the inner wall of the guide groove 30; the limit block 37 is slidably connected to the corresponding limit groove 38 to limit the guide plate 31.

[0037] In this embodiment, a plurality of positioning grooves 34 adapted to the sealing strips 32 are provided on the inner walls on both sides of the switch cabinet body 1; the positioning grooves 34 and the heat dissipation holes 18 are staggered; when the sealing strips 32 are staggered with the heat dissipation holes 18, the sealing strips 32 enter the positioning grooves 34, which can limit the sealing disk 26 and prevent the sealing disk 26 from shaking.

[0038] In this embodiment, the heat dissipation pipe 5 is a serpentine structure.

[0039] In this embodiment, a water pump is provided in the water storage tank 2 ; the water outlet of the water pump is connected to the heat dissipation pipe 5 .

[0040] In this embodiment, a refrigeration device is provided on the circulating water pipe for cooling the heated water.

[0041] The present invention also provides a method for using a switch device for a new energy vehicle power supply system, using the switch device for a new energy vehicle power supply system, comprising the following steps:

[0042] S1: Add appropriate amount of cold water to the water storage tank 2 and circulation tank 3 respectively;

[0043] S2: Start the circulation pump to allow the cold water in the water tank 2 to flow into the circulation box 3 through the heat dissipation pipe 5 and then flow back to the water tank 2 through the circulating water pipe, forming a cycle. During this process, the heat dissipation pipe 5 cools down the interior of the switch cabinet body 1;

[0044] S3: During the cooling process of the heat pipe 5, cold water flows through the inside of the turbine 4 and drives the rotor of the turbine 4 to rotate. The rotor of the turbine 4 drives the drive shaft 8 to rotate. The drive shaft 8 drives the heat dissipation fan 7 to rotate through the transmission assembly.

[0045] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A switchgear for a new energy vehicle power supply system, characterized in that: include: A switch cabinet body (1); a heat dissipation mechanism is provided inside the switch cabinet body (1); the heat dissipation mechanism comprises a water storage tank (2), a circulation box (3) and two water turbines (4); the water storage tank (2) and the circulation box (3) are respectively arranged at the top and bottom ends of the switch cabinet body (1); a circulation pump is provided in the circulation box (3); the circulation pump is connected to the water storage tank (2) through a circulation water pipe; the two water turbines (4) are symmetrically arranged on the left and right sides inside the switch cabinet body (1); the water inlet and the water outlet of the water turbine (4) are respectively connected to the water storage tank (2) and the circulation box (3) through a heat dissipation pipe (5); a plurality of fixing brackets (6) are uniformly arranged on one side of the heat dissipation pipe (5) close to the inner wall of the switch cabinet body (1); a plurality of heat dissipation fans (7) are rotatably connected to the fixing bracket (6); a drive shaft (8) is provided at one end of the rotor of the water turbine (4); the drive shaft (8) is transmission-connected to the heat dissipation fan (7) through a transmission assembly.

2. A switch device for a new energy vehicle power supply system according to claim 1, characterized in that: The transmission assembly comprises a first driving bevel gear (9), two first driven bevel gears (10), two first rotating shafts (11), a second driving bevel gear (12), a second driven bevel gear (13), a driving gear (14) and a driven gear (15); the first driving bevel gear (9) is arranged on the driving shaft (8); the two first rotating shafts (11) are symmetrically arranged on the upper and lower sides of the driving shaft (8); each of the first rotating shafts (11) is provided with the first driven bevel gear (10); the first driven bevel gear (10) is meshed with the first driving bevel gear (9); a plurality of second driving bevel gears (12) are provided on the first rotating shaft (11); the number of the second driving bevel gears (12) and the number of the fixing frame (6) are equal. The first and second driven bevel gears (13) are identical and arranged in a one-to-one correspondence; the driving gear (14) is rotatably connected to the fixing frame (6) through the second rotating shaft (16); the second driven bevel gear (13) is arranged on the second rotating shaft (16); the second driven bevel gear (13) is meshed with the second driving bevel gear (12); the cooling fan (7) is rotatably connected to the fixing frame (6) through the third rotating shaft (17); a plurality of cooling fans (7) on the same fixing frame (6) are evenly distributed on both sides of the second rotating shaft (16); the driven gear (15) is arranged on the third rotating shaft (17); the driving gear (14) is meshed with the adjacent driven gear (15); and the two adjacent driven gears (15) are meshed and connected.

3. A switch device for a new energy vehicle power supply system according to claim 1, characterized in that: A plurality of heat dissipation holes (18) are provided on both the left and right sides of the switch cabinet body (1); a fixing frame (19) corresponding to the heat dissipation holes (18) is provided on both the left and right outer walls of the switch cabinet body (1); and a filter (20) is provided on the side of the fixing frame (19) away from the switch cabinet body (1).

4. A switch device for a new energy vehicle power supply system according to claim 3, characterized in that: The drive shaft (8) extends from one end of the turbine (4) to the outside of the switch cabinet body (1) and is provided with a first pulley (21); a fourth rotating shaft (22) is rotatably connected at the middle position of the filter screen (20); a scraper (23) and a second pulley (24) are respectively provided at both ends of the fourth rotating shaft (22); the scraper (23) is arranged on the side of the filter screen (20) away from the switch cabinet body (1); the second pulley (24) is arranged inside the fixed frame (19); the first pulley (21) is connected to the second pulley (24) through a synchronous belt (25).

5. A switch device for a new energy vehicle power supply system according to claim 3, characterized in that: The plurality of heat dissipation holes (18) on the same side of the switch cabinet body (1) are distributed in a circular array; a sealing disk (26) is rotatably connected to the inner wall of the switch cabinet body (1); a plurality of through holes (27) are provided on the sealing disk (26); the plurality of through holes (27) are distributed in a circular array; the number of the through holes (27) is the same as the number of the heat dissipation holes (18); and a driving mechanism for driving the sealing disk (26) to rotate is provided on the inner wall of the switch cabinet body (1).

6. A switch device for a new energy vehicle power supply system according to claim 5, characterized in that: The driving mechanism comprises a motor (28) and a driving gear (29); the motor (28) is arranged on the inner wall of the switch cabinet body (1); the driving gear (29) is arranged at the output end of the motor (28); and the outer surface of the sealing disk (26) is provided with external teeth meshing with the driving gear (29).

7. The switch device for a new energy vehicle power supply system according to claim 5, characterized in that: The sealing disk (26) is provided with a plurality of guide grooves (30) on a side close to the heat dissipation hole (18); the plurality of guide grooves (30) are distributed in a ring array; the guide grooves (30) and the through holes (27) are arranged in an interlaced manner; a guide plate (31) is slidably connected in the guide groove (30); a sealing strip (32) is provided on a side of the guide plate (31) close to the heat dissipation hole (18); the cross section of the sealing strip (32) is arc-shaped; a plurality of springs (33) are fixedly connected to a side of the guide plate (31) away from the heat dissipation hole (18); the other end of the spring (33) is fixedly connected to the inner wall of the guide groove (30).

8. A switch device for a new energy vehicle power supply system according to claim 7, characterized in that: A plurality of positioning grooves (34) adapted to the sealing strips (32) are provided on the inner walls on both the left and right sides of the switch cabinet body (1); the positioning grooves (34) and the heat dissipation holes (18) are arranged in an alternating manner.

9. The switch device for a new energy vehicle power supply system according to claim 1, characterized in that: The heat dissipation pipe (5) is a serpentine structure.

10. A method for using a switch device for a new energy vehicle power supply system, characterized in that: Using the switch device for the new energy vehicle power supply system as claimed in any one of claims 1 to 9, comprising the following steps: S1: Add appropriate amount of cold water to the water storage tank (2) and circulation tank (3); S2: Start the circulation pump, so that the cold water in the water storage tank (2) flows into the circulation box (3) through the heat dissipation pipe (5), and flows back to the water storage tank (2) through the circulation water pipe, forming a cycle. During this process, the heat dissipation pipe (5) cools the inside of the switch cabinet body (1); S3: During the cooling process of the heat dissipation pipe (5), cold water flows through the interior of the water turbine (4) and drives the rotor of the water turbine (4) to rotate. The rotor of the water turbine (4) drives the drive shaft (8) to rotate. The drive shaft (8) drives the heat dissipation fan (7) to rotate through the transmission assembly.

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