A high and low voltage switchgear

Abstract

The present invention discloses a high and low voltage complete switchgear, belonging to the field of switchgear. A high and low voltage complete switchgear comprises a switch cabinet, and also comprises: a ventilation channel symmetrically arranged on the side wall of the switch cabinet, a heat dissipation and dust removal component is arranged inside the ventilation channel, which is used to dissipate heat for the electrical equipment in the switch cabinet and prevent dust from entering; a flow guide mechanism arranged on the inner wall of the switch cabinet near the ventilation channel, a part of the structure of the heat dissipation and dust removal component is connected to the flow guide mechanism, and a part of the structure of the flow guide mechanism can be driven to reciprocate up and down; a cleaning mechanism arranged on the outer wall of the switch cabinet near the ventilation channel, a part of the structure of the flow guide mechanism is connected to the cleaning mechanism, and a part of the structure of the cleaning mechanism can be driven to reciprocate along the end of the ventilation channel; the present invention can overcome the problems of uneven heat dissipation and poor effect of electrical equipment inside the high and low voltage complete switchgear, untimely cleaning of the dustproof plate, and poor dehumidification effect.

Description

Technical Field

[0001] The present invention relates to the technical field of switchgear, and in particular to a high and low voltage complete switchgear. Background Art

[0002] High and low voltage switchgear is an indispensable and important part of the power system. It is mainly composed of high voltage switchgear, low voltage switchgear and transformer. These equipment play a vital role in the power generation, transmission, transformation and distribution of the power system. It can not only realize the reasonable distribution of electric energy, distribute high voltage power to various power consumption areas, and then distribute electric energy to different power consumption equipment through low voltage switchgear, but also control and protect the power system. When a circuit fails, such as short circuit, overload, etc., the protection device in the complete set of equipment will act quickly to cut off the faulty circuit and protect the safety of equipment and personnel. Through reasonable design and configuration, it ensures the stable operation of the power system and reduces the occurrence of power outages. It is widely used in various fields such as industry, commerce, and civil use, such as factories, shopping malls, hospitals, residential areas, etc., and is a key equipment to ensure the safe, stable and efficient operation of the power system.

[0003] At present, most high and low voltage switchgear sets use ventilation fans to dissipate heat from internal electrical equipment, and then use dust shields to intercept dust entering the air. This method fixes the direction of air entry, making it difficult to effectively dissipate heat from electrical equipment at different locations, and easily causes excessive temperatures in local electrical equipment, affecting the use and service life of the electrical equipment. It is also difficult to clean the dust on the dust shields in a timely manner, affecting the heat dissipation effect of the electrical equipment. In addition, when dehumidifying the air, the dehumidifier needs to be replaced regularly, making it difficult to ensure the effect of air dehumidification. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of uneven heat dissipation and poor effect of electrical equipment inside high and low voltage complete switchgear in the prior art, untimely cleaning of dust panels and poor dehumidification effect, and to propose a high and low voltage complete switchgear.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A high and low voltage complete switchgear includes a switch cabinet, and also includes: a ventilation channel symmetrically arranged on the side wall of the switch cabinet, a heat dissipation and dust removal component is arranged inside the ventilation channel, which is used to dissipate heat from the electrical equipment in the switch cabinet and prevent dust from entering; a guide mechanism arranged on the inner wall of the switch cabinet near the ventilation channel, a partial structure of the heat dissipation and dust removal component is connected to the guide mechanism, and can drive a partial structure of the guide mechanism to reciprocate up and down; a cleaning mechanism arranged on the outer wall of the switch cabinet near the ventilation channel, a partial structure of the guide mechanism is connected to the cleaning mechanism, and can drive a partial structure of the cleaning mechanism to reciprocate along the end of the ventilation channel; a dehumidification mechanism arranged in the ventilation channel, a partial structure of the dehumidification mechanism is connected to the cleaning mechanism, and can drive a partial structure of the dehumidification mechanism to reciprocate along a predetermined trajectory.

[0007] In order to ensure the stability of heat dissipation of electrical equipment inside the switch cabinet, preferably, the heat dissipation and dust removal assembly includes a dustproof plate fixedly connected to the end of the ventilation channel away from the switch cabinet, the end of the ventilation channel close to the switch cabinet is fixedly connected to a mounting plate, a drive motor is fixedly connected to the mounting plate, and a ventilation fan is connected to the side of the drive motor away from the switch cabinet, wherein, when the drive motor drives the ventilation fan to rotate, the outside air can pass through the dustproof plate and enter the interior of the switch cabinet.

[0008] In order to facilitate the adjustment of the direction of air entering, the guide mechanism further includes a support plate symmetrically fixedly connected to the inner wall of the switch cabinet near the ventilation channel, and multiple groups of guide plates are rotatably connected between the support plates on both sides, and the axial end of the guide plate extends to the outside of the support plate, and the axial end of the guide plate on one side is fixedly connected with an adjusting gear, and a limit strip is fixedly connected to the side of the inner wall of the switch cabinet near the adjusting gear, and a movable rod is slidably connected between the limit strip and the support plate, and an end face rack meshing with the adjusting gear is fixedly connected to the movable rod, wherein a limited block is fixedly connected to the side of the switch cabinet near the bottom end of the movable rod, and one end of the guide plate is close to the ventilation channel.

[0009] In order to facilitate the driving of the guide plate to rotate, it further includes a rotating rod rotatably connected to the inner wall of the switch cabinet near the limit bar, the rotating rod and the output end of the driving motor are fixedly connected with a linkage wheel, a first belt is sleeved between the two groups of the linkage wheels, the rotating rod is fixedly connected to the side of the movable rod near the fan gear, and the movable rod is fixedly connected with a side rack meshing with the fan gear.

[0010] In order to facilitate the driving of the cleaning plate to rotate, the cleaning mechanism further includes a horizontal axis rotatably connected to the top of the two groups of support plates, one end of one group of guide plates away from the adjusting gear is fixedly connected to a driving wheel, the end of the horizontal axis is fixedly connected to a driven wheel, and a second belt is sleeved between the driving wheel and the driven wheel.

[0011] In order to facilitate the cleaning of dust on the dustproof plate, it further includes a rotating shaft rotatably connected to the side of the switch cabinet close to the horizontal axis, the end of the rotating shaft extends to the outside of the switch cabinet, a bevel gear group is arranged between the rotating shaft and the horizontal axis, and a cleaning plate is fixedly connected to the end of the rotating shaft away from the bevel gear group, wherein the rotating shaft and the horizontal axis are perpendicular to each other, the cleaning plate is in contact with the dustproof plate, and the size of the cleaning plate is larger than the diameter of the dustproof plate.

[0012] In order to facilitate dehumidification of the incoming air, the dehumidification mechanism further includes a baffle ring and a baffle plate fixedly connected to the inside of the ventilation channel, dehumidification cotton is arranged between the baffle ring and the baffle plate, and a pressure plate is slidably connected between the dehumidification cotton and the baffle ring, wherein the baffle ring, baffle plate, pressure plate and dehumidification cotton are all located between the ventilation fan and the dustproof plate, and the baffle ring is close to the ventilation fan, and the baffle plate is close to the dustproof plate, and the baffle plate and the pressure plate are provided with multiple groups of holes matching the dustproof plate.

[0013] In order to facilitate the removal of moisture adsorbed on the dehumidification cotton, it further includes a screw fixedly connected to the rotating shaft, a slider is arranged on the screw, an arc frame is fixedly connected to the bottom of the slider, and a sliding groove is symmetrically opened on the side of the ventilation channel close to the arc frame, and a connecting rod is fixedly connected between the arc frame and the pressure plate, wherein the arc frame is semicircular and matches the ventilation channel, and a protrusion matching the screw is arranged inside the slider, and the connecting rod passes through the sliding groove.

[0014] In order to improve the cleaning effect of dust on the dustproof plate, it further includes multiple groups of strikers fixedly connected to the side of the pressure plate close to the dustproof plate, and the dehumidification cotton and the baffle are both provided with through holes matching the strikers.

[0015] In order to facilitate the discharge of moisture on the dehumidification cotton, further, a drainage hole is opened at the bottom of the ventilation channel, and the drainage hole is located between the baffle ring and the baffle.

[0016] Compared with the prior art, the present invention provides a high and low voltage complete switchgear, which has the following beneficial effects:

[0017] 1. This high and low voltage switchgear can transport external air to the inside of the switch cabinet through the heat dissipation and dust removal components, and intercept the dust in the air. At the same time, it drives the guide mechanism to reciprocate up and down, so as to adjust the direction of air entry, so that electrical equipment at different positions can effectively dissipate heat, ensure the use effect and service life of the electrical equipment, and thus improve the safety of the switch cabinet.

[0018] 2. The high and low voltage switchgear can drive the cleaning mechanism to reciprocate along the surface of the dustproof plate through the guide mechanism, so as to clean the dust on the surface of the dustproof plate in time, ensure the stability of air entering, and further improve the heat dissipation effect of the electrical equipment inside the switch cabinet.

[0019] 3. The high and low voltage switchgear can dehumidify the air entering the switch cabinet through the dehumidification mechanism. At the same time, the cleaning mechanism drives the dehumidification mechanism to reciprocately squeeze the dehumidification cotton, thereby removing the water sediment adsorbed in the dehumidification cotton, thereby ensuring the dehumidification effect of the dehumidification cotton and further improving the safety of the switch cabinet during use.

[0020] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention can overcome the problems of uneven heat dissipation and poor effect of electrical equipment inside high and low voltage complete switchgear, untimely cleaning of dustproof plates, and poor dehumidification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a high and low voltage complete switchgear proposed by the present invention;

[0022] Figure 2 A schematic diagram of the internal structure of a high and low voltage complete switchgear proposed by the present invention;

[0023] Figure 3 A partial structural schematic diagram of a high and low voltage complete switchgear proposed by the present invention;

[0024] Figure 4 A schematic diagram of the partial structure of a flow guiding mechanism in a high and low voltage complete switchgear proposed by the present invention;

[0025] Figure 5 This is a structural schematic diagram of a ventilation channel in a high and low voltage complete switchgear proposed by the present invention;

[0026] Figure 6 A high and low voltage complete switchgear proposed by the present invention Figure 5 A schematic cross-sectional structure diagram of ;

[0027] Figure 7 The present invention provides a schematic structural diagram of a medium voltage plate, an arc frame and a striker in a high and low voltage complete switchgear.

[0028] In the figure: 1. switch cabinet; 2. ventilation channel; 3. dustproof plate; 4. mounting plate; 5. drive motor; 6. ventilation fan; 7. support plate; 8. guide plate; 9. adjustment gear; 10. limit strip; 11. movable rod; 12. end face rack; 13. side rack; 14. rotating rod; 15. linkage wheel; 16. first belt; 17. sector gear; 18. horizontal axis; 19. driving wheel; 20. driven wheel; 21. second belt; 22. rotating shaft; 23. bevel gear set; 24. cleaning plate; 25. retaining ring; 26. baffle; 27. pressure plate; 28. dehumidification cotton; 29. ​​drainage hole; 30. striker; 31. through hole; 32. lead screw; 33. slider; 34. arc frame; 35. slide groove; 36. connecting rod. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Reference Figure 1-Figure 7 A high and low voltage complete switchgear comprises a switch cabinet 1, wherein the side wall of the switch cabinet 1 is made of flame-retardant DMC material to prevent the flame from extending to the outside of the switch cabinet 1 when a fire occurs in the electrical equipment inside the switch cabinet 1, thereby improving the safety of the switch cabinet 1 during use, and further comprising: a ventilation channel 2 symmetrically arranged on the side wall of the switch cabinet 1, wherein a heat dissipation and dust removal component is arranged inside the ventilation channel 2, for dissipating heat from the electrical equipment in the switch cabinet 1 and preventing dust from entering; a guide mechanism arranged on the inner wall of the switch cabinet 1 near the ventilation channel 2, wherein a part of the structure of the heat dissipation and dust removal component is connected to the guide mechanism, and can drive a part of the structure of the guide mechanism to reciprocate up and down; a cleaning mechanism arranged on the outer wall of the switch cabinet 1 near the ventilation channel 2, wherein a part of the structure of the guide mechanism is connected to the cleaning mechanism, and can drive a part of the structure of the cleaning mechanism to reciprocate along the end of the ventilation channel 2; a dehumidification mechanism arranged in the ventilation channel 2, wherein a part of the structure of the dehumidification mechanism is connected to the cleaning mechanism, and can drive a part of the structure of the dehumidification mechanism to reciprocate along a predetermined trajectory.

[0032] Reference Figure 1 , Figure 2 and Figure 5The heat dissipation and dust removal component includes a dustproof plate 3 fixedly connected to the end of the ventilation channel 2 away from the switch cabinet 1, and a mounting plate 4 is fixedly connected to the end of the ventilation channel 2 close to the switch cabinet 1. A driving motor 5 is fixedly connected to the mounting plate 4, and a ventilation fan 6 is connected to the side of the driving motor 5 away from the switch cabinet 1. When the driving motor 5 drives the ventilation fan 6 to rotate, the outside air can pass through the dustproof plate 3 and enter the interior of the switch cabinet 1.

[0033] The driving motor 5 adopts a dual-rotor motor, which is a conventional method in the prior art, so it is not elaborated here. The driving motor 5 drives the ventilation fan 6 to rotate, which will have a conveying effect on the surrounding air, thereby conveying the outside air into the switch cabinet 1, dissipating the heat of the electrical equipment in the switch cabinet 1, and at the same time as the air enters, the dust in the air can be intercepted. The surface of the dustproof plate 3 is provided with tiny holes, and the air can pass through the dustproof plate 3 when intercepting the dust.

[0034] Reference Figure 2 and Figure 3 The guide mechanism includes a support plate 7 symmetrically fixedly connected to the inner wall of the switch cabinet 1 near the ventilation channel 2, and multiple groups of guide plates 8 are rotatably connected between the support plates 7 on both sides, and the axial end of the guide plate 8 extends to the outside of the support plate 7, and the axial end of one side of the guide plate 8 is fixedly connected with an adjusting gear 9, and a limit strip 10 is fixedly connected to the side of the inner wall of the switch cabinet 1 near the adjusting gear 9, and a movable rod 11 is slidably connected between the limit strip 10 and the support plate 7, and an end face rack 12 meshing with the adjusting gear 9 is fixedly connected to the movable rod 11, wherein a limited block is fixedly connected to one side of the switch cabinet 1 near the bottom end of the movable rod 11, and one end of the guide plate 8 is close to the ventilation channel 2.

[0035] There are gaps between adjacent guide plates 8 and adjacent adjusting gears 9, and initially, the guide plates 8 are arranged in parallel. The limit blocks can prevent the movable rod 11 from being separated from the support plate 7 and the limit strip 10. When the movable rod 11 moves upward along the support plate 7 and the limit strip 10, it can drive multiple groups of adjusting gears 9 to rotate synchronously, thereby driving multiple groups of guide plates 8 to rotate synchronously, so that when the air enters the switch cabinet 1 along the ventilation channel 2, it flows along the direction of the guide plate 8 to the electrical equipment inside the switch cabinet 1. As the guide plate 8 rotates, the air can be transported to electrical equipment at different positions, thereby ensuring the heat dissipation effect of the electrical equipment.

[0036] Reference Figure 3 and Figure 4, and also includes a rotating rod 14 rotatably connected to the inner wall of the switch cabinet 1 near the limit bar 10, the rotating rod 14 and the output end of the driving motor 5 are fixedly connected with a linkage wheel 15, a first belt 16 is sleeved between the two sets of linkage wheels 15, a fan-shaped gear 17 is fixedly connected to the side of the rotating rod 14 near the movable rod 11, and a side rack 13 meshing with the fan-shaped gear 17 is fixedly connected to the movable rod 11.

[0037] When the driving motor 5 drives the ventilation fan 6 to rotate, it will drive the interlocking wheel 15 at the other end of the driving motor 5 to rotate synchronously. Under the action of the first belt 16, it will drive the other set of interlocking wheels 15 to rotate synchronously, thereby driving the fan gear 17 to rotate, and under the action of the side rack 13, the movable rod 11 is driven to move upward. When the fan gear 17 is disengaged from the side rack 13, the movable rod 11 moves to the initial position under the action of gravity. When the fan gear 17 contacts the side rack 13 again, it drives the movable rod 11 to move upward again. Through the above process, the guide plate 8 is driven to rotate up and down, thereby continuously changing the air flow direction, so that the electrical equipment at different positions in the switch cabinet 1 can be effectively cooled. The diameter ratio between the two sets of interlocking wheels 15 can be adjusted according to actual conditions to ensure the stability of the engagement between the fan gear 17 and the side rack 13.

[0038] Reference Figure 3 The cleaning mechanism includes a horizontal shaft 18 rotatably connected to the top of the two groups of support plates 7, one end of one group of guide plates 8 away from the adjusting gear 9 is fixedly connected to a driving wheel 19, the end of the horizontal shaft 18 is fixedly connected to a driven wheel 20, and a second belt 21 is sleeved between the driving wheel 19 and the driven wheel 20.

[0039] Among them, the diameter ratio of the driving wheel 19 and the driven wheel 20 can be adjusted according to the rotation speed of the ventilation fan 6, and the driving wheel 19 rotates synchronously with one group of guide plates 8. As the guide plates 8 rotate up and down, the driving wheel 19 drives the horizontal axis 18 to rotate through the second belt 21 and the driven wheel 20.

[0040] Reference Figure 1-Figure 3 and Figure 6 , and also includes a rotating shaft 22 rotatably connected to the side of the switch cabinet 1 close to the horizontal axis 18, the end of the rotating shaft 22 extends to the outside of the switch cabinet 1, a bevel gear set 23 is arranged between the rotating shaft 22 and the horizontal axis 18, and a cleaning plate 24 is fixedly connected to one end of the rotating shaft 22 away from the bevel gear set 23, wherein the rotating shaft 22 and the horizontal axis 18 are perpendicular to each other, the cleaning plate 24 is in contact with the dustproof plate 3, and the size of the cleaning plate 24 is larger than the diameter of the dustproof plate 3.

[0041] When the horizontal shaft 18 rotates, it rotates through the bevel gear set 23. The bevel gear set 23 includes two sets of bevel gears, which are respectively located on the rotating shaft 22 and the horizontal shaft 18 and mesh with each other, thereby driving the rotating shaft 22 to rotate and driving the cleaning plate 24 to reciprocate along the surface of the dustproof plate 3. When the temperature inside the switch cabinet 1 is within the normal range, the driving motor 5 drives the ventilation fan 6 to transport the external air inward to maintain the normal operation of the internal electrical equipment. In this process, the cleaning plate 24 can prevent large impurities from being adsorbed on the holes of the dustproof plate 3, thereby ensuring stable air exchange; when the temperature inside the switch cabinet 1 is high, the driving motor 5 drives the ventilation fan 6 to transport the internal high-temperature gas outward to reduce the residence time of the high-temperature gas in the switch cabinet 1, thereby improving the heat dissipation effect of the switch cabinet 1. At this time, the cleaning plate 24 can remove the dust on the surface of the dustproof plate 3 to ensure the stable discharge of the high-temperature gas inside the switch cabinet 1. It should be explained that the forward and reverse rotation of the driving motor 5 can be achieved by a temperature sensor, which is a conventional means in the prior art, so it is not repeated.

[0042] Reference Figure 6 The dehumidification mechanism includes a baffle ring 25 and a baffle plate 26 fixedly connected to the inside of the ventilation channel 2, a dehumidification cotton 28 is arranged between the baffle ring 25 and the baffle plate 26, and a pressure plate 27 is slidably connected between the dehumidification cotton 28 and the baffle ring 25, wherein the baffle ring 25, the baffle plate 26, the pressure plate 27 and the dehumidification cotton 28 are all located between the ventilation fan 6 and the dustproof plate 3, and the baffle ring 25 is close to the ventilation fan 6, the baffle plate 26 is close to the dustproof plate 3, and the baffle plate 26 and the pressure plate 27 are provided with multiple groups of holes matching the dustproof plate 3.

[0043] The dehumidification cotton 28 is a conventional means in the prior art, so it is not described in detail. When the air flows through the dehumidification cotton 28, the moisture in the air can be removed, thereby preventing the electrical equipment in the switch cabinet 1 from being damaged due to moisture. In addition, the dehumidification cotton 28 has a certain elasticity, and when the dehumidification cotton 28 is compressed, the moisture adsorbed on the dehumidification cotton 28 can be squeezed out, and when the compression stops, the dehumidification cotton 28 will rebound to its initial volume; secondly, there is a certain distance between the baffle ring 25 and the ventilation fan 6 and between the baffle 26 and the dustproof plate 3, and the baffle ring 25 can also prevent moisture from flowing into the interior of the switch cabinet 1.

[0044] Reference Figure 6 and Figure 7, also includes a lead screw 32 fixedly connected to the rotating shaft 22, a slider 33 is provided on the lead screw 32, an arc frame 34 is fixedly connected to the bottom of the slider 33, a slide groove 35 is symmetrically opened on the side of the ventilation channel 2 close to the arc frame 34, a connecting rod 36 is fixedly connected between the arc frame 34 and the pressure plate 27, wherein the arc frame 34 is semicircular and matches the ventilation channel 2, a protrusion matching the lead screw 32 is provided inside the slider 33, and the connecting rod 36 passes through the slide groove 35, and also includes a plurality of groups of strikers 30 fixedly connected to the side of the pressure plate 27 close to the dustproof plate 3, the dehumidification cotton 28 and the baffle 26 are provided with through holes 31 matching the striker 30, and a drainage hole 29 is opened at the bottom of the ventilation channel 2, and the drainage hole 29 is located between the retaining ring 25 and the baffle 26.

[0045] When the rotating shaft 22 rotates, it will drive the screw 32 to rotate, thereby driving the slider 33 to move back and forth along the surface of the screw 32, and at the same time driving the arc frame 34 to move back and forth along the surface of the ventilation channel 2, and under the action of the connecting rod 36, it will drive the pressure plate 27 to move toward the side of the dehumidification cotton 28, thereby squeezing the dehumidification cotton 28, so that the moisture in the dehumidification cotton 28 is discharged through the drainage hole 29; in addition, when the pressure plate 27 moves toward the side of the dustproof plate 3, it will also drive the striker 30 to move. When the pressure plate 27 moves to the maximum displacement, it will drive the striker 30 to collide with the dustproof plate 3, which can make part of the dust adsorbed on the dustproof plate 3 fall off, and at the same time can reduce the adsorption force between the dust and the dustproof plate 3, further improving the dust cleaning effect on the surface of the dustproof plate 3.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high and low voltage switchgear assembly, comprising a switch cabinet (1), characterized in that: Also includes: A ventilation channel (2) is symmetrically arranged on a side wall of the switch cabinet (1), wherein a heat dissipation and dust removal component is arranged inside the ventilation channel (2) for dissipating heat from electrical equipment in the switch cabinet (1) and preventing dust from entering; A flow guide mechanism is arranged on the inner wall of the switch cabinet (1) near the ventilation channel (2), and a part of the structure of the heat dissipation and dust removal component is connected to the flow guide mechanism, so that a part of the structure of the flow guide mechanism can be driven to reciprocate up and down; A cleaning mechanism is arranged on the outer wall of the switch cabinet (1) close to the ventilation channel (2), and a part of the structure of the flow guide mechanism is connected to the cleaning mechanism, so that the part of the structure of the cleaning mechanism can be driven to reciprocate along the end of the ventilation channel (2); A dehumidification mechanism is arranged in the ventilation channel (2), a part of the structure of the dehumidification mechanism is connected to the cleaning mechanism, and can drive the part of the dehumidification mechanism to move back and forth along a predetermined trajectory; The heat dissipation and dust removal assembly comprises a dustproof plate (3) fixedly connected to an end of the ventilation channel (2) away from the switch cabinet (1); an end of the ventilation channel (2) close to the switch cabinet (1) is fixedly connected to a mounting plate (4); a drive motor (5) is fixedly connected to the mounting plate (4); and a side of the drive motor (5) away from the switch cabinet (1) is connected to a ventilation fan (6). When the drive motor (5) drives the ventilation fan (6) to rotate, external air can pass through the dustproof plate (3) and enter the interior of the switch cabinet (1); The guide mechanism comprises a support plate (7) symmetrically fixedly connected to a side of the inner wall of the switch cabinet (1) close to the ventilation channel (2), a plurality of guide plates (8) are rotatably connected between the support plates (7) on both sides, and the axial ends of the guide plates (8) extend to the outside of the support plates (7), one side of the guide plate (8) is fixedly connected to the axial end of the guide plate (8) with an adjustment gear (9), a limit strip (10) is fixedly connected to a side of the inner wall of the switch cabinet (1) close to the adjustment gear (9), a movable rod (11) is slidably connected between the limit strip (10) and the support plate (7), and an end face rack (12) meshing with the adjustment gear (9) is fixedly connected to the movable rod (11), Wherein, a limit block is fixedly connected to one side of the switch cabinet (1) close to the bottom end of the movable rod (11), and one end of the guide plate (8) is close to the ventilation channel (2); It also includes a rotating rod (14) rotatably connected to the inner wall of the switch cabinet (1) near the limit strip (10), the rotating rod (14) and the output end of the drive motor (5) are both fixedly connected to a linkage wheel (15), a first belt (16) is sleeved between the two sets of the linkage wheels (15), the rotating rod (14) is fixedly connected to a fan-shaped gear (17) on the side near the movable rod (11), and the movable rod (11) is fixedly connected to a side rack (13) meshing with the fan-shaped gear (17).

2. A high and low voltage switchgear according to claim 1, characterized in that: The cleaning mechanism comprises a transverse shaft (18) rotatably connected to the top ends of two groups of support plates (7), wherein one end of one group of guide plates (8) away from the adjustment gear (9) is fixedly connected to a driving wheel (19), and the end of the transverse shaft (18) is fixedly connected to a driven wheel (20), and a second belt (21) is sleeved between the driving wheel (19) and the driven wheel (20).

3. A high and low voltage switchgear according to claim 2, characterized in that: It also includes a rotating shaft (22) rotatably connected to a side of the switch cabinet (1) close to the transverse axis (18), the end of the rotating shaft (22) extending to the outside of the switch cabinet (1), a bevel gear set (23) being arranged between the rotating shaft (22) and the transverse axis (18), and a cleaning plate (24) being fixedly connected to one end of the rotating shaft (22) away from the bevel gear set (23). The rotating shaft (22) and the horizontal axis (18) are perpendicular to each other, the cleaning plate (24) is in contact with the dustproof plate (3), and the size of the cleaning plate (24) is larger than the diameter of the dustproof plate (3).

4. A high and low voltage switchgear according to claim 3, characterized in that: The dehumidification mechanism comprises a baffle ring (25) and a baffle plate (26) fixedly connected to the inside of the ventilation channel (2); a dehumidification cotton (28) is arranged between the baffle ring (25) and the baffle plate (26); a pressure plate (27) is slidably connected between the dehumidification cotton (28) and the baffle ring (25); The baffle ring (25), the baffle plate (26), the pressure plate (27) and the dehumidification cotton (28) are all located between the ventilation fan (6) and the dustproof plate (3), and the baffle ring (25) is close to the ventilation fan (6), the baffle plate (26) is close to the dustproof plate (3), and the baffle plate (26) and the pressure plate (27) are both provided with a plurality of groups of holes that match the dustproof plate (3).

5. A high and low voltage switchgear according to claim 4, characterized in that: It also includes a lead screw (32) fixedly connected to the rotating shaft (22), a slider (33) being provided on the lead screw (32), an arc frame (34) being fixedly connected to the bottom of the slider (33), a slide groove (35) being symmetrically provided on a side of the ventilation channel (2) close to the arc frame (34), a connecting rod (36) being fixedly connected between the arc frame (34) and the pressure plate (27), The arc frame (34) is semicircular and matches the ventilation channel (2); a protrusion matching the lead screw (32) is provided inside the slider (33); and the connecting rod (36) passes through the slide groove (35).

6. A high and low voltage switchgear according to claim 5, characterized in that: It also includes a plurality of groups of strikers (30) fixedly connected to the pressure plate (27) on one side close to the dustproof plate (3), and the dehumidifying cotton (28) and the baffle (26) are both provided with through holes (31) matching the strikers (30).

7. A high and low voltage switchgear according to claim 4, characterized in that: A drainage hole (29) is provided at the bottom of the ventilation channel (2), and the drainage hole (29) is located between the baffle ring (25) and the baffle plate (26).

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