Heat dissipation and monitoring composite structure of power distribution cabinet

Abstract

The invention relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet heat dissipation and monitoring composite structure which comprises a power distribution cabinet body, components are installed in the power distribution cabinet body, a power distribution cabinet door is rotationally connected to one side of an opening of the power distribution cabinet body, a partition plate is fixedly connected to the lower portion of an inner groove of the power distribution cabinet body, and a maintenance plate is connected to the bottom of the partition plate close to the opening through bolts. The top of the partition plate is fixedly connected with a mounting base, and a bottom plate is inserted into the mounting base. According to the heat dissipation and monitoring composite structure of the power distribution cabinet, the air guide arc plate is arranged, the heat dissipation column is arranged on the inner side of the air guide arc plate, and the heat dissipation blades are mounted on the surface of the heat dissipation column, so that when a switch component in the power distribution cabinet is heated, the heat dissipation column drives the heat dissipation blades to rotate, and then the heat dissipation blades push air from the air guide arc plate; and then the air is guided and blown out by the edge of the air guide arc plate, so that the blowing-out range of the heat dissipation air is expanded, switch components in the power distribution cabinet are fully cooled, and the heat dissipation effect of the power distribution cabinet is improved.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution cabinets, and in particular to a heat dissipation and monitoring composite structure of a power distribution cabinet. Background Art

[0002] The distribution cabinet is a device responsible for distributing electric energy and monitoring electric equipment in the power system. It is usually located at the end of the power system, responsible for distributing electric energy to nearby loads, and providing protection, monitoring and control functions. The design of the distribution cabinet enables it to be used in situations where the load is dispersed and there are fewer circuits, while the motor control center is suitable for situations where the load is concentrated and there are more circuits. During the use of the distribution cabinet, since the internal components are in a relatively closed environment, the electrical components will generate heat after long-term operation, which will cause the temperature inside the distribution cabinet to rise. Therefore, it is necessary to dissipate the heat of the distribution cabinet and discharge the heat generated inside the distribution cabinet through various means to keep its internal temperature within a reasonable range, ensure the normal operation of the equipment and extend its service life. The distribution cabinet will generate a lot of heat during operation. If the heat is not dissipated in time, it may cause the equipment to overheat and affect its stability and safety.

[0003] Existing heat dissipation is usually fan heat dissipation. The fan is installed on the distribution cabinet door of the distribution cabinet, and then sucks in external air and blows it to the components. However, because the cooling fan of the distribution cabinet is generally set in the center and then blows air to dissipate heat, the cooling air blows from one side to the other. Therefore, the components on the side of the distribution cabinet are difficult to be cooled by the cooling air, and the cooling air flows and is discharged quickly, making it difficult to fully exchange heat for the high temperature of the components. Therefore, the fan heat dissipation method cannot fully dissipate the heat of all the switching components that generate heat, and the heat dissipation and heat exchange effect is poor, resulting in poor heat dissipation effect of the distribution cabinet. Summary of the invention

[0004] The object of the present invention is to provide a composite structure of heat dissipation and monitoring of a power distribution cabinet to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a composite structure of heat dissipation and monitoring of a power distribution cabinet, comprising a power distribution cabinet body, components are installed inside the power distribution cabinet body, a power distribution cabinet door is rotatably connected to one side of the opening of the power distribution cabinet body, a partition is fixedly connected to the lower position of the inner groove of the power distribution cabinet body, an inspection plate is bolted to the bottom of the partition near the opening position, a mounting seat is fixedly connected to the top of the partition, a bottom plate is plugged and installed on the inner side of the mounting seat, an air guide arc plate is fixedly connected to the top of the bottom plate, a heat dissipation base is fixedly connected to the top of the heat dissipation base near the top position of the inner side of the air guide arc plate, a heat dissipation column is rotatably installed on the top of the heat dissipation base, and a heat dissipation blade is fixedly connected to the outer arc wall of the heat dissipation column;

[0006] A circulation pipe is embedded in and fixedly connected to the inner arc wall of the air guide arc plate, and both ends of the circulation pipe pass through the side wall of the air guide arc plate and are fixedly connected with circulation connectors, and the other ends of the two circulation connectors are installed with circulation installation heads, and an expansion valve is fixedly connected inside the circulation installation heads, wherein an inlet pipe is installed at the end of the middle circulation installation head away from the circulation connector, and a return pipe is fixedly connected to the end of the other circulation installation head away from the circulation connector, and the return pipe and the inlet pipe are both penetrated and fixedly connected with the partition, and a water pump is installed at the bottom end of the water inlet pipe, and a condenser is installed on the bottom inner groove wall of the distribution cabinet body near the partition and the inner side of the inspection plate, and an exhaust window is provided on the side wall of the distribution cabinet body away from the distribution cabinet door, and a monitor is embedded in and fixedly connected to the surface of the air guide arc plate close to the arc end.

[0007] In a further embodiment, a water inlet is installed on the outer side of the inspection plate, and a drain outlet is installed on the inspection plate below the water inlet.

[0008] In a further embodiment, a motor is installed inside the heat dissipation base, a turntable is fixedly connected to the bottom end of the heat dissipation column, a rotating groove is opened on the top of the heat dissipation base, the turntable is rotatably connected to the rotating groove, and the output end of the motor passes through the heat dissipation base and is fixedly connected to the bottom of the turntable.

[0009] In a further embodiment, a ball is embedded in and rollingly connected to the bottom of the turntable, and the ball is made of metal.

[0010] In a further embodiment, a baffle is slidably mounted on the mounting seat near the end of the opening, and a push block is fixedly connected to the outer side of the baffle.

[0011] In a further embodiment, a sliding block is fixedly connected to one side of the baffle plate close to the mounting seat, a sliding groove is provided at the end of the mounting seat relative to the sliding block, and the sliding block is adapted to and slidably connected to the sliding groove.

[0012] In a further embodiment, a slide rod is fixedly connected to the inner groove wall of the slide groove, the slide rod penetrates and is slidably connected to the slider, and a spring is fixedly connected between the sides of the two sliders that are away from each other and the inner groove wall opposite to the slide groove.

[0013] In a further embodiment, a bolt column is fixedly connected to one end of the circulation installation head close to the circulation connection head, a bolt groove is formed at one end of the circulation connection head opposite to the bolt column, and the bolt column is threadedly connected to the bolt groove.

[0014] In a further embodiment, the heat dissipation blades are arranged in an arc surface, a three-way valve is installed at the output end of the water pump, and the output end of the three-way valve is connected to two water inlet pipes.

[0015] In a further embodiment, the monitors are temperature sensors and humidity sensors, and the detection ends of the monitors are all facing the components.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention provides an air guide arc plate, and then provides a heat dissipation column on the inner side of the air guide arc plate. Heat dissipation blades are installed on the surface of the heat dissipation column. When the switch components inside the power distribution cabinet are heated, the heat dissipation column drives the heat dissipation blades to rotate. Then the heat dissipation blades push the air from the air guide arc plate, and then the air is guided and blown out by the edge of the air guide arc plate, thereby increasing the range of the heat dissipation air, fully dissipating the heat of the switch components inside the power distribution cabinet, and improving the heat dissipation effect of the power distribution cabinet;

[0018] 2. In the present invention, a circulation pipe for heat exchange is installed on the inner arc wall of the air guide arc plate. The circulation pipe circulates the coolant at the bottom. At this time, the air temperature inside the air guide arc plate is blown to the components through the heat dissipation column and the heat dissipation blade, thereby efficiently dissipating the heat of the components. The low-temperature air can more quickly and fully exchange heat with the components, thereby improving the heat dissipation efficiency inside the power distribution cabinet;

[0019] 3. In the present invention, an expansion valve is arranged inside the circulation installation head. When the coolant entering and discharged from the circulation pipe passes through the expansion valve, the fluid is quickly compressed by the expansion valve, the liquid flow rate is increased and the liquid pressure is reduced, so that the coolant can be quickly cooled, so that the coolant can be circulated and cooled more quickly and efficiently, and the cooling effect of the coolant subsequently entering the circulation pipe is better, so that the subsequent air temperature is increased, and then the distribution cabinet is quickly and efficiently dissipated, thereby improving the efficiency and effect of heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the structure of the power distribution cabinet of the present invention;

[0021] Figure 2 It is a three-dimensional schematic diagram of the structure of disassembling the inspection panel of the power distribution cabinet of the present invention;

[0022] Figure 3 It is a three-dimensional schematic diagram of the bottom plate and the top structure of the present invention;

[0023] Figure 4 It is a cross-sectional perspective schematic diagram of the bottom plate and the top structure of the present invention;

[0024] Figure 5 It is a schematic structural perspective view of the mounting base of the present invention;

[0025] Figure 6 It is a schematic diagram of the structural cross section of the circulation connection head and the circulation installation head of the present invention;

[0026] Figure 7 For the present invention Figure 4 A schematic diagram of the enlarged structure at point A;

[0027] Figure 8 For the present invention Figure 5 Schematic diagram of the enlarged structure at B.

[0028] In the figure: 1. distribution cabinet; 2. components; 3. distribution cabinet door; 4. partition; 5. inspection panel; 6. mounting base; 7. bottom plate; 8. air guide arc plate; 9. heat dissipation base; 10. heat dissipation column; 11. heat dissipation blade; 12. circulation pipe; 13. circulation connector; 14. circulation mounting head; 15. expansion valve; 16. water inlet pipe; 17. water return pipe; 18. water pump; 19. condenser; 20. exhaust window; 21. water inlet; 22. drain outlet; 23. motor; 24. turntable; 25. rotating groove; 26. ball bearing; 27. baffle; 28. push block; 29. ​​slider; 30. slide groove; 31. spring; 32. slide rod; 33. bolt column; 34. bolt groove; 35. monitor. DETAILED DESCRIPTION

[0029] The following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] See also Figure 1 - Figure 8 The present embodiment provides a composite structure for heat dissipation and monitoring of a power distribution cabinet, including a power distribution cabinet body 1, wherein components 2 are installed inside the power distribution cabinet body 1, a power distribution cabinet door 3 is rotatably connected to one side of the opening of the power distribution cabinet body 1, a partition 4 is fixedly connected to the lower position of the inner groove of the power distribution cabinet body 1, an inspection plate 5 is bolted to the bottom of the partition 4 near the opening position, a water injection port 21 is installed on the outer side of the inspection plate 5, and a drain port 22 is installed at a position below the water injection port 21 of the inspection plate 5, a mounting seat 6 is fixedly connected to the top of the partition 4, a bottom plate 7 is plugged and installed on the inner side of the mounting seat 6, and the top of the bottom plate 7 A wind guide arc plate 8 is fixedly connected, and a heat dissipation base 9 is fixedly connected to the top position of the bottom plate 7 near the inner side of the wind guide arc plate 8. A heat dissipation column 10 is rotatably installed on the top of the heat dissipation base 9. A heat dissipation blade 11 is fixedly connected to the outer arc wall of the heat dissipation column 10. The heat dissipation blade 11 is set through the arc surface of the wind guide arc plate 8 and then fans out the low-temperature air inside it. At this time, the cooling wind is guided by the opening of the wind guide arc plate 8 to diffuse, and the inside of the power distribution cabinet 1 is fully dissipated, the efficiency and area of ​​heat dissipation are improved, and it is ensured that the components 2 inside the power distribution cabinet 1 can all be cooled;

[0032] A circulation pipe 12 is embedded in and fixedly connected to the inner arc wall of the air guide arc plate 8. Both ends of the circulation pipe 12 pass through the side wall of the air guide arc plate 8 and are fixedly connected with circulation connectors 13. The other ends of the two circulation connectors 13 are both installed with circulation installation heads 14. The circulation installation heads 14 are fixedly connected with expansion valves 15. The water pump 18 transports the coolant to the circulation pipe 12 through the water inlet pipe 16 and the circulation installation head 14. During the process, the coolant passes through the expansion valve 15 inside the circulation installation head 14. The expansion valve 15 compresses the coolant and reduces the pressure of the coolant. It is then transported to the circulation connector 13 by atomization spraying, and then enters the circulation pipe 12 through the circulation connector 13. The coolant inside the circulation pipe 12 is transported forward. During the process, the coolant exchanges heat with the air around the air guide arc plate 8 to cool it down. The expansion valve 15 converts the coolant into low-temperature and low-pressure wet steam through throttling, thereby achieving a refrigeration effect and providing a high temperature. The efficiency and effect of circulating and cooling the coolant are improved, wherein an inlet pipe 16 is installed at one end of the middle circulation installation head 14 away from the circulation connection head 13, and a return pipe 17 is fixedly connected to one end of the other circulation installation head 14 away from the circulation connection head 13. The return pipe 17 and the inlet pipe 16 are both penetrated by the partition 4 and fixedly connected, and a water pump 18 is installed at the bottom end of the inlet pipe 16. A condenser 19 is installed on the bottom inner groove wall of the distribution cabinet 1 near the partition 4 and the inner side of the inspection plate 5, and an exhaust window 20 is provided on the side wall of the distribution cabinet 1 away from the distribution cabinet door 3. A monitor 35 is embedded and fixedly connected on the surface of the air guide arc plate 8 near the arc end, and an expansion valve 15 is arranged in the return water circulation installation head 14 to throttle and cool the heated coolant again, thereby reducing the temperature of the refluxed coolant, and then the condenser 19 can be used for a shorter time and consumption, and the refluxed coolant is quickly cooled and recycled again.

[0033] The circulation installation head 14 is fixedly connected with a bolt column 33 at one end close to the circulation connection head 13, and a bolt groove 34 is opened at one end of the circulation connection head 13 opposite to the bolt column 33. The bolt column 33 is threadedly connected with the bolt groove 34. When the base plate 7 is installed inside the mounting seat 6, the connection between the circulation installation head 14 and the circulation connection head 13 is tightened by the threads of the bolt column 33 and the bolt groove 34, making the connection between the circulation installation head 14 and the circulation connection head 13 more convenient and quick, thereby improving the connection convenience and connection efficiency of the circulation pipe 12 and the water inlet pipe 16 and the return pipe 17 of the cooling liquid.

[0034] The heat dissipation blades 11 are arranged in an arc surface, a three-way valve is installed at the output end of the water pump 18, and the output end of the three-way valve is connected to two water inlet pipes 16. The three-way valve arranged at the output end of the water pump 18 facilitates the coolant to be evenly and stably distributed to the two circulation pipes 12. The cooling and heat dissipation of the two groups of circulation pipes 12 can further improve the heat dissipation effect inside the distribution cabinet 1.

[0035] The monitor 35 is a temperature sensor and a humidity sensor. The detection ends of the monitor 35 are all facing the components 2. The monitor 35 is provided with multiple and is installed in a staggered manner on the inner side of the cross-section of the air guide arc plate 8. The monitor 35 can monitor the temperature and humidity of the components 2 and the internal environment inside the distribution cabinet 1 in real time, thereby facilitating more stable heat dissipation and supervision of the inside of the distribution cabinet 1.

[0036] Example 2

[0037] See also Figure 4 and Figure 7 , further improvements were made on the basis of Example 1:

[0038] A motor 23 is installed inside the heat dissipation base 9, a turntable 24 is fixedly connected to the bottom end of the heat dissipation column 10, a rotating groove 25 is opened on the top of the heat dissipation base 9, the turntable 24 is rotatably connected to the rotating groove 25, the output end of the motor 23 passes through the heat dissipation base 9 and is fixedly connected to the bottom of the turntable 24, a ball 26 is embedded in the bottom of the turntable 24 and is rollingly connected, the ball 26 is made of metal material, when the motor 23 drives the heat dissipation column 10 to rotate, the output end of the motor 23 drives the turntable 24 to rotate in the rotating groove 25, at this time, the ball 26 at the bottom of the turntable 24 rolls at the bottom of the inner groove of the rotating groove 25, at this time, the turntable 24 can provide more stable support and rotation for the heat dissipation column 10, and the rolling of the ball 26 improves the smoothness of the heat dissipation column 10, and improves the efficiency of the heat dissipation of the heat dissipation column 10.

[0039] Example 3

[0040] See also Figure 5 and Figure 8 , further improvements were made on the basis of Example 1:

[0041] A baffle 27 is slidably installed at the end position of the mounting seat 6 near the opening, and a push block 28 is fixedly connected to the outer side of the baffle 27. The two sides of the push block 28 are inclined surfaces and the surface is provided with anti-slip grooves. The baffle 27 is easily and quickly pushed by the push block 28 to release the obstruction of the baffle 27. At this time, the bottom plate 7 can be quickly inserted into the mounting seat 6, and a slider 29 is fixedly connected to the side of the baffle 27 near the mounting seat 6. A slide groove 30 is opened at the position of the end of the mounting seat 6 relative to the slider 29. The slider 29 is adapted to and slidably connected to the slide groove 30. A slide rod 32 is fixedly connected to the inner groove wall of the slide groove 30. The slide rod 32 penetrates and is slidably connected to the slider 29. The side of the two sliders 29 that is away from each other is fixed to the inner groove wall relative to the slide groove 30. Connect the spring 31. When installing the bottom plate 7, by pushing the push block 28 on the surface of the baffle 27, the slider 29 of the baffle 27 slides in the slide groove 30, and the two baffles 27 move away from each other. During the process, the slider 29 slides on the slide rod 32 and the compression spring 31 contracts. Then, the bottom plate 7 and its top structure are moved into the distribution cabinet 1, and the bottom plate 7 is inserted into the groove body of the mounting seat 6, and then the bottom plate 7 is pushed inward. After the bottom plate 7 is completely inserted into the inside of the mounting seat 6, the push block 28 is released at this time, and the slider 29 is pushed by the rebound of the spring 31. The slider 29 slides in the slide groove 30, which can drive the two baffles 27 to move toward the middle and limit the bottom plate 7, so that the rapid installation and limiting of the bottom plate 7 can be completed.

[0042] When in use, the coolant is added into the inner cavity formed by the partition 4 and the inspection plate 5 through the water injection port 21, and then the components 2 inside the power distribution cabinet 1 are operated. When the temperature of the components rises and generates heat, the water pump 18 is started to transport the coolant into the circulation pipe 12 through the water inlet pipe 16 and the circulation installation head 14. During the process, the coolant passes through the expansion valve 15 inside the circulation installation head 14, and the expansion valve 15 compresses the coolant, and the pressure of the coolant is reduced. Then, it is transported to the circulation connector 13 by atomization spraying, and then enters the circulation pipe 12 through the circulation connector 13. The cooling liquid in the cooling part is transported forward. During the process, the cooling liquid exchanges heat with the air around the air guide arc plate 8 to cool it down. At this time, the motor 23 is started to drive the heat dissipation column 10 to rotate. At this time, the heat dissipation column 10 can blow the low-temperature air inside the air guide arc plate 8 outward through the heat dissipation blades 11. Then the heat dissipation wind spreads from the inside of the air guide arc plate 8 to the outside and blows toward the components 2. At this time, the low-temperature wind and rain components 2 are quickly heat exchanged, thereby lowering the temperature of the components 2 and making the temperature inside the power distribution cabinet 1 as a whole. Then, after the heat dissipation wind completes the heat exchange, it is discharged from the exhaust window 20 to complete the heat dissipation inside the power distribution cabinet 1.

[0043] After the coolant circulates inside the circulation pipe 12, it enters the circulation installation head 14 from the circulation connector 13 at one end of the return pipe 17. At this time, the coolant that has completed the heat exchange and has increased in temperature passes through the expansion valve 15 again, and then compresses the refluxed heated coolant again, thereby lowering the temperature of the coolant. The coolant then enters the cavity inside the partition 4 and the inspection plate 5. The coolant has been pre-cooled, and at this time the condenser 19 can cool the coolant in a shorter time, thereby improving the efficiency of the coolant cooling cycle.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power distribution cabinet heat dissipation and monitoring composite structure, comprising a power distribution cabinet body (1), components (2) are installed inside the power distribution cabinet body (1), and a power distribution cabinet door (3) is rotatably connected to one side of the opening of the power distribution cabinet body (1), characterized in that: A partition (4) is fixedly connected to the lower position of the inner groove of the power distribution cabinet (1); a maintenance plate (5) is bolted to the bottom of the partition (4) near the opening position; a mounting seat (6) is fixedly connected to the top of the partition (4); a bottom plate (7) is plugged and installed inside the mounting seat (6); a wind guide arc plate (8) is fixedly connected to the top of the bottom plate (7); a heat dissipation base (9) is fixedly connected to the top position of the bottom plate (7) near the inner side of the wind guide arc plate (8); a heat dissipation column (10) is rotatably installed on the top of the heat dissipation base (9); and a heat dissipation blade (11) is fixedly connected to the outer arc wall of the heat dissipation column (10); A circulation pipe (12) is embedded in and fixedly connected to the inner arc wall of the air guide arc plate (8); both ends of the circulation pipe (12) penetrate the side wall of the air guide arc plate (8) and are fixedly connected to circulation connectors (13); the other ends of the two circulation connectors (13) are both installed with circulation installation heads (14); the circulation installation heads (14) are internally fixedly connected with expansion valves (15); one end of the middle circulation installation head (14) away from the circulation connector (13) is installed with a water inlet pipe (16); the other end of the other circulation installation head (14) away from the circulation connector (13) is installed with a water inlet pipe (16); One end of the head (13) is fixedly connected to a return pipe (17), the return pipe (17) and the water inlet pipe (16) are both passed through the partition (4) and are fixedly connected, a water pump (18) is installed at the bottom end of the water inlet pipe (16), a condenser (19) is installed on the bottom inner groove wall of the distribution cabinet (1) close to the partition (4) and the inner side of the inspection plate (5), a side wall of the distribution cabinet (1) away from the distribution cabinet door (3) is provided with an exhaust window (20), and a monitor (35) is embedded and fixedly connected on the surface of the air guide arc plate (8) close to the arc surface end.

2. A power distribution cabinet heat dissipation and monitoring composite structure according to claim 1, characterized in that: A water inlet (21) is installed on the outer side of the inspection plate (5), and a water outlet (22) is installed on the inspection plate (5) at a position below the water inlet (21).

3. The heat dissipation and monitoring composite structure of a power distribution cabinet according to claim 1 is characterized in that: A motor (23) is installed inside the heat dissipation base (9); a turntable (24) is fixedly connected to the bottom end of the heat dissipation column (10); a turntable (25) is provided on the top of the heat dissipation base (9); the turntable (24) is rotatably connected to the turntable (25); and an output end of the motor (23) passes through the heat dissipation base (9) and is fixedly connected to the bottom of the turntable (24).

4. A power distribution cabinet heat dissipation and monitoring composite structure according to claim 3, characterized in that: A ball (26) is embedded in and rollingly connected to the bottom of the rotating disk (24), and the ball (26) is made of metal material.

5. The heat dissipation and monitoring composite structure of a power distribution cabinet according to claim 1, characterized in that: A baffle (27) is slidably mounted on the mounting seat (6) at an end position close to the opening, and a push block (28) is fixedly connected to the outer side of the baffle (27).

6. A power distribution cabinet heat dissipation and monitoring composite structure according to claim 5, characterized in that: A sliding block (29) is fixedly connected to one side of the baffle (27) close to the mounting seat (6); a sliding groove (30) is provided at the end of the mounting seat (6) relative to the sliding block (29); and the sliding block (29) is adapted to and slidably connected to the sliding groove (30).

7. A power distribution cabinet heat dissipation and monitoring composite structure according to claim 6, characterized in that: The inner groove wall of the slide groove (30) is fixedly connected with a slide rod (32), the slide rod (32) penetrates and is slidably connected with the slider (29), and a spring (31) is fixedly connected between the sides of the two sliders (29) that are away from each other and the inner groove wall relative to the slide groove (30).

8. The heat dissipation and monitoring composite structure of a power distribution cabinet according to claim 1, characterized in that: A bolt column (33) is fixedly connected to one end of the circulation installation head (14) close to the circulation connection head (13); a bolt groove (34) is formed at one end of the circulation connection head (13) opposite to the bolt column (33); and the bolt column (33) is threadedly connected to the bolt groove (34).

9. The heat dissipation and monitoring composite structure of a power distribution cabinet according to claim 1, characterized in that: The heat dissipation blades (11) are arranged in an arc surface, a three-way valve is installed at the output end of the water pump (18), and the output end of the three-way valve is connected to two water inlet pipes (16).

10. The heat dissipation and monitoring composite structure of a power distribution cabinet according to claim 1, characterized in that: The monitor (35) is a temperature sensor and a humidity sensor, and the detection ends of the monitor (35) are all facing the component (2).

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