CN112186599B - Heat dissipation moisture-proof high-low voltage switch cabinet - Google Patents

Abstract

The invention relates to the technical field of high-low voltage switch cabinets, and particularly discloses a heat-dissipation moisture-proof high-low voltage switch cabinet; the cabinet comprises a cabinet body and a cabinet door, wherein a base is arranged below the cabinet body, a circular rotating groove is formed in the upper surface of the base, a connecting sleeve is arranged at the center of the bottom wall of the circular rotating groove, a hollow rotating shaft which is rotatably connected with the connecting sleeve is connected at the center of the lower surface of the cabinet body, a windward steering mechanism is arranged on the upper surface of the cabinet body, a plurality of air inlet windows are formed in the left side surface and the right side surface of the cabinet body from top to bottom, and a sealing cover plate is rotatably connected to each air inlet window; compared with the existing switch cabinet, the heat dissipation fan does not need to be in a running state all the time, the service life of the heat dissipation fan is prolonged, the electric energy loss is reduced, and when the sealing cover plate is opened, the heat dissipation effect of the interior of the whole cabinet body is better.

Description

A heat dissipation and moisture-proof high and low voltage switch cabinet

technical field

The invention relates to the technical field of high and low voltage switch cabinets, and specifically discloses a heat dissipation and moisture proof type high and low voltage switch cabinet.

Background technique

The switch cabinet is an electrical equipment. The outside line of the switch cabinet first enters the main control switch in the cabinet, and then enters the sub-control switch. Each branch is set according to its needs. The high and low voltage switchgear is widely used in the power industry, and the heat dissipation function of the existing high and low voltage switchgear on the market is poor, so when the high and low voltage switchgear is in use, the electronic components in the high and low voltage switchgear will generate a lot of If the heat cannot be dissipated in time, the temperature in the high and low voltage switchgear is likely to be too high, and various electronic components are burned, which greatly reduces the service life of the high and low voltage switchgear. At the same time, the moisture-proof performance of the existing high and low voltage switchgear is also poor. When the electrical components in the cabinet are in humid air for a long time, the aging speed of the wires is accelerated, which also reduces the circuit and electrical components inside the high and low voltage switchgear. life. At present, for the improvement of the heat dissipation and moisture-proof performance of the switch cabinet, a fan is installed inside, and the fan is operated through an additional power supply method to discharge the hot air in the cabinet from the heat dissipation holes on the switch cabinet, so as to achieve the effect of heat dissipation and moisture-proof.

The invention with the patent number of CN109818279A discloses a switch cabinet with good heat dissipation effect, which includes a base, a cabinet body is fixedly installed on the top of the base, a heat dissipation cabinet is fixedly installed on the right side of the cabinet body, and a heat dissipation cabinet is fixedly installed on the top of the inner wall of the heat dissipation cabinet. The bottom end of the installation block is fixedly installed with an exhaust fan. The switch cabinet with good heat dissipation effect continuously extracts air through the exhaust fan during the working process, and the air enters the inside of the water cooling device through the air outlet pipe. The electronic components inside the body dissipate heat, and the heat dissipation effect is good. However, because the exhaust fan inside the switch cabinet is always working, not only additional power supply is required, but long-term operation will seriously affect the service life of the exhaust fan. In addition, the moisture-proof performance of the switch cabinet is poor, and the air inside the switch cabinet cannot effectively dry and moisture-proof, which will also reduce the overall service life to a certain extent. Therefore, in view of the above-mentioned shortcomings of the traditional high and low voltage switches and the existing switchgear with good heat dissipation effect, it is a technical problem to be solved to design a high and low voltage switchgear that does not require the fan to run continuously and has better heat dissipation and moisture-proof effects. .

SUMMARY OF THE INVENTION

The purpose of the present invention is to design a high and low voltage switch cabinet that does not require the fan to run continuously and has better heat dissipation and moisture-proof effects, aiming at the above-mentioned shortcomings of the traditional high and low voltage switches and the existing switch cabinets with good heat dissipation effect.

The invention is achieved through the following technical solutions:

A heat-dissipating and moisture-proof high and low voltage switch cabinet comprises a cabinet body and a cabinet door, the cabinet door is rotatably arranged on the front side of the cabinet body, a base is arranged under the cabinet body, and an upper surface of the base is provided with A circular rotating groove, a connecting sleeve is provided at the center of the bottom wall of the circular rotating groove, a hollow rotating shaft rotatably connected with the connecting sleeve is connected at the center of the lower surface of the cabinet body, and the inner cavity of the cabinet body is The lower end is provided with a partition, which divides the interior of the cabinet into an upper assembly area and a lower air supply area, a large number of air holes are opened at the left and right ends of the partition, and a large number of air holes are opened on the upper surface of the cabinet. A heat dissipation hole, the left and right sides of the lower end of the front side of the cabinet are connected with air intake pipes, the outer end of the air intake pipe is provided with a filter screen, the inner end of the air intake pipe is provided with a cooling fan, and the center of the partition plate is provided with a cooling fan. There is a cable extension outlet aligned with the hollow shaft;

The upper surface of the cabinet is provided with a windward steering mechanism, the windward steering mechanism includes an inverted V-shaped windward plate, and the two inner sides of the windward plate are connected with triangular diversion blocks, each of the triangular diversions. The lower end of the block is connected with an L-shaped fixing plate, the L-shaped fixing plate is fixedly connected with the upper surface of the cabinet, and the heat dissipation hole is arranged between the two L-shaped fixing plates and between the two triangular guide blocks. The upper surface of the cabinet is provided with a wind speed sensor, the interior of the cabinet is provided with a PLC control terminal, the wind speed sensor and the PLC control terminal are electrically connected, and the left and right sides of the cabinet are opened from top to bottom. There are several air inlet windows, each of the air inlet windows is rotatably connected with a sealing cover plate, the inner surface of each of the sealing cover plates is provided with a rotating piece, and a rotating bar is connected to the rotating piece, A telescopic device is vertically arranged on the left and right ends of the upper surface of the partition plate, the telescopic device is electrically connected with the PLC control end, and a vertical bar is connected to the top of the telescopic device, which is located on the same side The inner ends of the rotating bars are all rotatably connected with the vertical bars.

As a further arrangement of the above solution, the wind speed sensor includes a rotating drum, a rotating rod and several air cups, the rotating drum is fixedly arranged on the upper surface of the cabinet, the rotating rod is rotatably arranged in the rotating drum, and the wind cups It is connected with the upper end of the rotating rod, the lower end of the rotating rod extends into the interior of the cabinet, and the lower end of the rotating rod extends into the interior of the cabinet is connected with a fan blade, and the interior of the cabinet is provided with a drying and moisture-proof device, The drying and moisture-proof device includes a suction casing matched with a fan blade, the fan blade is arranged in the inner cavity of the suction casing, a rotational speed sensor is arranged on the lower surface of the suction casing, and the rotating rod The bottom end is connected with the rotational speed sensor, the rotational speed sensor is electrically connected with the PLC control end, the side of the air extraction housing is connected with an air extraction pipe, and the rear side of the air extraction housing is connected with an exhaust pipe, so The exhaust pipe protrudes from the rear side of the cabinet, the outer end of the exhaust pipe is connected with a drying cylinder, the drying cylinder is provided with a desiccant, and the other end of the drying cylinder is connected with a drying air exhaust pipe. The end of the drying air exhaust pipe extends into the interior of the cabinet; here, the wind speed sensor is changed to connect the fan blade at the lower end, and the fan blade is set in the air extraction shell. The air passes through the air extraction pipe, the air extraction housing, the drying cylinder and the drying air exhaust pipe in turn, so that the circulation and drying of the air inside the cabinet can be realized, which increases its moisture-proof effect.

As a further arrangement of the above solution, the drying cylinder is detachably sealed with the exhaust pipe and the drying air exhaust pipe; the detachable sealing connection of the drying cylinder can facilitate the removal of the drying cylinder, and then the desiccant inside can be removed. replace.

As a further arrangement of the above solution, the interior of the cabinet is provided with a battery, and the outer surface of the windward panel is provided with a photovoltaic power generation panel; the setting of the photovoltaic power generation panel can convert light energy into electrical energy and store it in the battery, and then The battery then supplies power to the expansion device, PLC control terminal, sensors, etc.

As a further arrangement of the above solution, the lower ends of the left and right sides of the cabinet are provided with arc-shaped ledges matching the circular rotating grooves, and a plurality of ball grooves are formed on the outer surface of the arc-shaped ledges, each of which is The ball grooves are all rotatably provided with balls, and the inner wall of the circular rotating groove is provided with an annular rolling groove matched with the balls; overall more stable.

As a further arrangement of the above solution, the circular rotating groove located below the annular rolling groove can be provided with a plurality of drainage channels, and the drainage channels pass through the side of the base; The water in the rotating trough is discharged to prevent the corrosion of the cabinet from gathering in the circular rotating trough in rainy days.

As a further setting of the above scheme, the air inlet windows opened on the left and right sides of the cabinet are 2 to 4, and the air inlet windows opened on the left and right sides of the cabinet are arranged in mirror symmetry; Choose according to the situation. The symmetrical arrangement of the air inlets on both sides can make the air body pass through the cabinet smoothly and take away a lot of heat.

As a further arrangement of the above solution, the telescopic device is one of an electric telescopic rod or a hydraulic telescopic rod; the selection of the specific telescopic device is selected according to the actual situation.

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

1) The heat-dissipating and moisture-proof type high and low voltage switch cabinet disclosed in the present invention can make the cabinet body rotate in the circular rotating groove on the base through the windward steering mechanism arranged above the cabinet body under the action of natural wind, so that the The side of the cabinet body of the air inlet window is facing the wind body, and the wind will pass through the gap between the two triangular guide blocks in the windward steering mechanism, so that the air flow speed above the heat dissipation hole is large. The air supply function of the cabinet can make the air in the cabinet move from bottom to top, can take away the heat in the cabinet, and play a heat dissipation effect; when the speed of the natural wind is large, the wind speed sensor can transmit the signal to the PLC control end, PLC control end controls the cooling fan to stop working, and controls the expansion and contraction device to shorten. The air window is opened, and then the outside natural wind passes through the entire cabinet to achieve heat dissipation; compared with the existing switch cabinet, the cooling fan does not need to be in operation all the time, which prolongs the service life of the cooling fan and reduces the power consumption. loss; and when the sealing cover is opened, the internal heat dissipation effect of the entire cabinet is better.

2) The present invention also improves the traditional wind speed sensor. The fan blade is set at the lower end of the rotating rod, and the fan blade is set in an air extraction shell. The air inside the cabinet can be continuously pumped by the action of the outside natural wind. It is put into and dried through a drying cylinder, and then discharged into the cabinet after drying. The moisture-proof effect is excellent, and it does not need fan drive, and the utilization effect of wind energy is novel and practical.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is the first angle three-dimensional structure schematic diagram of the cabinet in the present invention;

3 is a schematic diagram of a second angle three-dimensional structure of the cabinet in the present invention;

Fig. 4 is the three-dimensional structure schematic diagram of the base in the present invention;

Fig. 5 is the three-dimensional structure schematic diagram of the windward steering mechanism in the present invention;

6 is a schematic diagram of the three-dimensional structure of a sealing cover plate, a rotating bar, a vertical bar, a telescopic device and the like in the present invention;

7 is a schematic three-dimensional structure diagram of the modified wind speed sensor and the drying and moisture-proof device in Embodiment 2 of the present invention.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only The embodiments are part of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.

It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances for the embodiments of the application described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", The orientation or positional relationship indicated by "vertical", "horizontal", "horizontal", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are primarily used to better describe the invention and its embodiments, and are not intended to limit the fact that the indicated device, element, or component must have a particular orientation, or be constructed and operated in a particular orientation.

In addition, some of the above-mentioned terms may be used to express other meanings besides orientation or positional relationship. For example, the term "on" may also be used to express a certain attachment or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific situations.

Furthermore, the terms "installed", "set up", "provided with", "connected", "connected", "socketed" should be construed broadly. For example, it may be a fixed connection, a detachable connection, or a unitary structure; it may be a mechanical connection, or an electrical connection; it may be directly connected, or indirectly connected through an intermediary, or between two devices, elements, or components. internal communication. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings 1 to 7 and in conjunction with the embodiments.

Example 1

This embodiment 1 introduces a heat dissipation type high and low voltage switch cabinet. Referring to FIG. 1, its main structure includes a cabinet body 1 and a cabinet door 2. The cabinet door 2 is rotated and arranged on the front side of the cabinet body 1. A handle is provided, and a lock (not shown in the figure) is provided on the cabinet body 1 and the cabinet door 2.

Referring to Figure 2, Figure 3 and Figure 4, a base 3 is provided below the cabinet 1, a circular rotating groove 301 is opened on the upper surface of the base 3, and the bottom wall of the circular rotating groove 301 is at the center of the circle A connecting sleeve 4 is provided, and the center of the lower surface of the cabinet 1 is connected with a hollow rotating shaft 5 rotatably connected with the connecting sleeve 4. Through the action between the connecting sleeve 4 and the hollow rotating shaft 5, the cabinet 1 can be placed on the base. 3 turns on. At the same time, the lower ends of the left and right sides of the cabinet are also provided with arc-shaped convex edges 6 that match the circular rotating grooves 301. The outer surface of the arc-shaped convex edge 6 is provided with a plurality of ball grooves, and each ball groove rotates Balls 7 are provided, and an annular rolling groove 302 that matches the balls 7 is opened on the inner wall of the circular rotating groove 301. The cooperation between them can make the whole cabinet 1 more stable during the rotation process.

Referring to FIG. 2 , a partition plate 8 is arranged at the lower end of the inner cavity of the cabinet body 1 . For installation of various high and low voltage circuit switches, circuit breakers and other electrical devices. A large number of air holes 801 are opened at the left and right ends of the partition plate 8 , and a large number of heat dissipation holes 101 are opened on the upper surface of the cabinet 1 . Air inlet pipes 9 are connected to the left and right sides of the lower end of the front side of the cabinet body 1 , the outer end of the air inlet pipe 9 is provided with a filter screen 901 , and the inner end of the air inlet pipe 9 is provided with a cooling fan (not shown in the figure), The cooling fan draws the outside cold air into the intake pipe 9, first filters the drawn air, and then discharges it from the air holes 801 on the partition plate, and then dissipates the heat of the electrical components inside the cabinet 1, and finally dissipates the heat from the air. hole 101. At the same time, a cable extension port 802 aligned with the hollow shaft 5 is also opened at the center of the partition 8, and the cables inside the cabinet are all extended into the hollow shaft 5 from the cable extension port 802, and finally from the connection sleeve. 4 extends into base 3.

Referring to FIG. 1 and FIG. 5 , a windward steering mechanism is provided on the upper surface of the cabinet 1 . Specifically, the windward steering mechanism includes an inverted V-shaped windward plate 10 and is connected to both inner sides of the windward plate 10 There are triangular guide blocks 11, and the lower end of each triangle guide block 11 is connected with an L-shaped fixing plate 12, the L-shaped fixing plate 12 is fixedly connected to the upper surface of the cabinet 1, and the heat dissipation holes are arranged on two L-shaped fixing plates. between the boards. Through the setting of the windward steering mechanism, when the wind reaching a certain wind speed blows on the windward plate 10, the entire cabinet 1 will rotate under the action of the wind until the end faces of the two triangular guide blocks 11 face the wind body, and When the wind body passes through the two triangular guide blocks 11, the wind speed above the heat dissipation hole 101 is large and the pressure is small, and the hot air collected above the inside of the cabinet 1 will also be discharged from the heat dissipation hole 101 to achieve a certain heat dissipation. Effect.

In addition, referring to FIG. 2 and FIG. 6 , a wind speed sensor 13 is also arranged on the upper surface of the cabinet 1 between the two triangular diversion blocks 11 , and a PLC control terminal 14 is arranged inside the cabinet 1 . The wind speed sensor 13 is electrically connected with the PLC control terminal 14 . The left and right sides of the cabinet 1 are provided with a number of air inlet windows from top to bottom, and the air inlet windows are 2 to 4 in the specific setting, and the air inlet windows opened on both sides are mirror-symmetrical. A sealing cover plate 15 is rotatably connected to each air inlet window, and a rotating member 16 is arranged on the inner surface of each sealing cover plate 15 , and a rotating bar 17 is connected to each rotating member 16 . A telescopic device 18 is vertically arranged on both the left and right ends of the upper surface of the partition plate 8 . Specifically, the telescopic device is one of an electric telescopic rod or a hydraulic telescopic rod. The PLC control terminal 14 can control the extension or shortening of the telescopic device 18. A vertical bar 19 is connected to the top of the retractable device 18, and the inner ends of the rotating bars 17 on the same side are connected to the same vertical bar 19. Turn the connection. That is, through the extension or shortening of the telescopic device 18 , the sealing cover 15 can be closed or opened under the action of the rotating bar 17 .

In addition, in this embodiment, a battery 20 is also arranged inside the cabinet 1, and a photovoltaic power generation panel (not shown in the figure) is arranged on the outer surface of the windward panel 10, and the photovoltaic power generation panel can charge the battery 20, Then the battery 20 can supply power to the telescopic device 18 , the wind speed sensor 13 and the PLC control terminal.

Finally, in this embodiment, a plurality of drainage channels 303 can be opened on the circular rotating groove 301 located below the annular rolling groove 302 , and the drainage channels 303 are penetrated from the side of the base 3 , and the drainage channels 303 can The circular rotating groove 301 is discharged in time.

Example 2

Embodiment 2 discloses an improved heat-dissipating and moisture-proof high and low voltage switchgear based on Embodiment 1. The similarities between Embodiment 2 and Embodiment 1 will not be described again. The differences are:

Referring to FIG. 3 and FIG. 7 , the present invention refits a common wind speed sensor on the market, and the refitted structure includes a drum 131 , a rotating rod 132 and several air cups 133 , and the drum 131 is fixedly arranged with two On the upper surface of the cabinet 1 between the triangular deflector blocks 11, the rotating rod 132 is rotatably arranged in the rotating drum 131, a plurality of air cups 133 are connected with the upper end of the rotating rod 132, and the lower end of the rotating rod 132 extends into the rotating drum 131. The cabinet body 1 is arranged inside, and a fan blade 134 is connected to the lower end of the rotating rod 132 extending into the cabinet body 1 . A drying and moisture-proof device 21 is arranged inside the cabinet body 1 . The drying and moisture-proof device 21 includes a suction casing 211 matched with the fan blades 134 , and the fan blades 134 are arranged in the inner cavity of the suction casing 211 . The lower surface of the air casing 211 is provided with a rotational speed sensor 212, the bottom end of the rotating rod 132 is connected with the rotational speed sensor 212, and the rotational speed sensor 212 is electrically connected with the PLC control terminal 14, and the wind speed can also be realized by the function of the rotational speed sensor 212. measurement. An air extraction pipe 213 is connected to the left side of the air extraction housing 211 , and an exhaust pipe 214 is connected to the rear side of the air extraction housing 211 . The outer end of the air pipe 214 is connected with a drying cylinder 215, and the drying cylinder 215 is provided with a desiccant (not shown in the figure). The other end is connected with a dry air exhaust pipe 216 , and the end of the dry air exhaust pipe 216 is extended into the cabinet 1 to be arranged. The above-mentioned modification of the wind speed sensor can realize the utilization of wind energy, so that the fan blades 134 in the air extraction shell 211 are rotated, and the internal air of the cabinet 1 is continuously led to the drying cylinder 215 for drying. Play a better moisture-proof effect.

Finally, it should be noted that in this embodiment, the drying cylinder 215 and the exhaust pipe 214 and the drying air exhaust pipe 216 are detachable and sealed; It is a snap connection, and a sealing ring can be set at the snap connection. It is detachably sealed and connected with the subsequent replacement of the desiccant in the drying cylinder 215 .

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. Inside.

Claims (8)

1. A heat-dissipating and moisture-proof type high and low voltage switchgear, comprising a cabinet body and a cabinet door, and the cabinet door is rotatably arranged on the front side of the cabinet body, it is characterized in that, the bottom of the cabinet body is provided with a base, the base The upper surface of the seat is provided with a circular rotating groove, the center of the bottom wall of the circular rotating groove is provided with a connecting sleeve, and the center of the lower surface of the cabinet is connected with a hollow rotating shaft that is rotatably connected with the connecting sleeve. The lower end of the inner cavity of the cabinet is provided with a partition, the partition divides the interior of the cabinet into an upper assembly area and a lower air supply area, and a large number of air holes are opened at the left and right ends of the partition. The upper surface of the cabinet is provided with a large number of heat dissipation holes, the left and right sides of the lower end of the front side of the cabinet are connected with air intake pipes, the outer end of the air intake pipe is provided with a filter screen, and the inner end of the air intake pipe is provided with a cooling fan. The center of the partition is provided with a cable extension port aligned with the hollow rotating shaft; The upper surface of the cabinet is provided with a windward steering mechanism, the windward steering mechanism includes an inverted V-shaped windward plate, and the two inner sides of the windward plate are connected with triangular diversion blocks, each of the triangular diversions. The lower end of the block is connected with an L-shaped fixing plate, the L-shaped fixing plate is fixedly connected with the upper surface of the cabinet, and the heat dissipation hole is arranged between the two L-shaped fixing plates and between the two triangular guide blocks. The upper surface of the cabinet is provided with a wind speed sensor, the interior of the cabinet is provided with a PLC control terminal, the wind speed sensor and the PLC control terminal are electrically connected, and the left and right sides of the cabinet are opened from top to bottom. There are several air inlet windows, each of the air inlet windows is rotatably connected with a sealing cover plate, the inner surface of each of the sealing cover plates is provided with a rotating piece, and a rotating bar is connected to the rotating piece, A telescopic device is vertically arranged on the left and right ends of the upper surface of the partition plate, the telescopic device is electrically connected with the PLC control end, and a vertical bar is connected to the top of the telescopic device, which is located on the same side The inner ends of the rotating bars are all rotatably connected with the vertical bars. 2. The heat-dissipating and moisture-proof high and low-voltage switch cabinet according to claim 1, wherein the wind speed sensor comprises a rotating drum, a rotating rod and several air cups, and the rotating drum is fixedly arranged on the upper surface of the cabinet body, so that the The rotating rod is rotatably arranged in the rotating drum, the wind cup is connected with the upper end of the rotating rod, the lower end of the rotating rod extends into the interior of the cabinet, and the lower end of the rotating rod that extends into the interior of the cabinet is connected with a fan blade , the interior of the cabinet is provided with a drying and moisture-proof device, the drying and moisture-proof device includes an air extraction casing matched with a fan blade, the fan blade is arranged in the inner cavity of the air extraction casing, and the air extraction casing The lower surface of the body is provided with a rotational speed sensor, the bottom end of the rotating rod is connected with the rotational speed sensor, the rotational speed sensor is electrically connected with the PLC control end, the side of the air extraction housing is connected with an air extraction pipe, and the air extraction The rear side of the air casing is connected with an exhaust pipe, the exhaust pipe is arranged out of the rear side of the cabinet, the outer end of the exhaust pipe is connected with a drying cylinder, and the drying cylinder is provided with a desiccant, and the The other end of the drying cylinder is connected with a drying air exhaust pipe, and the end of the drying air exhaust pipe extends into the interior of the cabinet and is arranged. 3. The heat-dissipating and moisture-proof high and low-voltage switch cabinet according to claim 2, characterized in that the drying cylinder is detachably connected with the exhaust pipe and the drying air exhaust pipe. 4. The heat-dissipating and moisture-proof high and low voltage switch cabinet according to claim 1, characterized in that a battery is arranged inside the cabinet body, and a photovoltaic power generation panel is arranged on the outer surface of the windward panel. 5. The heat-dissipating and moisture-proof high and low voltage switch cabinet according to claim 1, wherein the lower ends of the left and right sides of the cabinet are provided with arc-shaped convex edges matched with the circular rotating grooves, and the arc-shaped convex edges A plurality of ball grooves are opened on the outer surface of the ball groove, and each ball groove is rotatably provided with a ball, and an annular rolling groove matched with the ball is opened on the inner wall of the circular rotating groove. 6. The heat-dissipating and moisture-proof high and low-voltage switchgear according to claim 5, wherein the circular rotating grooves located below the annular rolling grooves are provided with a plurality of drainage channels, and the drainage channels extend from the bottom of the base. Out on the side. 7. The heat-dissipating and moisture-proof type high and low voltage switchgear according to claim 1, characterized in that, the air inlet windows opened on the left and right sides of the cabinet are 2 to 4, and the inlet windows opened on the left and right sides of the cabinet are 2-4. The wind window is set in mirror symmetry. 8 . The heat-dissipating and moisture-proof high and low voltage switch cabinet according to claim 1 , wherein the telescopic device is one of an electric telescopic rod or a hydraulic telescopic rod. 9 .

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