CN216016056U

CN216016056U - Switch cabinet with protection structure

Info

Publication number: CN216016056U
Application number: CN202121690438.9U
Authority: CN
Inventors: 穆西迎
Original assignee: Sichuan Zhengdong Electric Co ltd
Current assignee: Sichuan Zhengdong Electric Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-03-11
Anticipated expiration: 2031-07-23

Abstract

The utility model discloses a switch cabinet with a protection structure, and relates to the technical field of protection devices; the drying device comprises a blower, a first air blowing pipe, a second air blowing pipe, an exhaust fan, a first exhaust pipe, a second exhaust pipe, a filter cartridge, a drying cylinder and the like; the utility model can blow cold air into the upper placing chamber and the lower placing chamber simultaneously, so as to ensure that the switch cabinet body can blow cold air into the switch cabinet body, and further drive hot air in the switch cabinet body away, thereby realizing the purpose of heat dissipation; hot air in the switch cabinet body can be pumped away in time while the blower blows air, so that the unfavorable conditions that the switch cabinet body explodes or electrical elements are damaged due to overlarge pressure in the switch cabinet body are prevented; and the unfavorable conditions that dust or water vapor in the air enters the switch cabinet body along the blowing device and the air draft device to cause the electrical components to be damped and polluted and the like can be avoided.

Description

Switch cabinet with protection structure

Technical Field

The utility model relates to the technical field of protective devices, in particular to a switch cabinet with a protective structure.

Background

The switch cabinet is an electrical device, the external line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a branch control switch, and each branch is arranged according to the requirement. Such as meters, automatic controls, magnetic switches of motors, various alternating current contactors, and the like, some of which are also provided with high-voltage chambers and low-voltage chamber switch cabinets, and high-voltage buses, such as power plants, and some of which are also provided with low-frequency load shedding for keeping main equipment. The main function of the switch cabinet is to open and close, control and protect electric equipment in the process of power generation, power transmission, power distribution and electric energy conversion of an electric power system.

The utility model provides a drawout switch cabinet protection device, which is characterized in that a drawout switch cabinet protection device is disclosed in a patent with the application number of CN201920890326.4, and comprises a protection device body and a switch cabinet body, wherein a mounting groove is arranged in the protection device body, a damping plate is fixedly arranged on the bottom wall in the mounting groove, the end, away from a support leg, of the damping plate is provided with the switch cabinet body, four groups of clamping plates are symmetrically arranged on two opposite side walls of the mounting groove, a damping pad is clamped between the four groups of clamping plates, and two reinforcing mechanisms are symmetrically arranged between the end, away from the damping plate, of the switch cabinet body and the top wall in the mounting groove. And the firmness of the installation can be improved, and the protection performance of the device is greatly improved.

Above-mentioned device has produced the important function in the aspect of protecting the cubical switchboard cabinet body, however, at the in-process of in-service use, the electrical components in the cubical switchboard cabinet body very easily generates heat, leads to the inside heat of cubical switchboard to pile up, if these heats can not in time effluvium, long-time accumulation can make the temperature in the cubical switchboard very high, influences electrical components's life, electrical components's ageing with higher speed, increases user's cost. The radiator fan that above-mentioned device set up directly sets up in the cubical switchboard cabinet body top, and the air is difficult to direct access cabinet body in this portion, consequently is difficult to realize the heat dissipation purpose.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a switch cabinet with a protection structure; the air blower is arranged, cold air can be blown into the switch cabinet body, and therefore the purpose of heat dissipation is achieved; the exhaust fan is arranged, hot air in the switch cabinet body can be exhausted, cooling is carried out, and the service life and the use performance of electrical components are guaranteed.

The purpose of the utility model is realized by the following technical scheme:

a switch cabinet with a protection structure comprises a protection device body and a switch cabinet body, wherein the protection device body is enclosed outside the switch cabinet body, two support legs are symmetrically and fixedly installed at the bottom end of the protection device body, a damping plate is fixedly arranged between the inner side of the bottom end of the protection device body and the outer side of the bottom end of the switch cabinet body, two damping devices are arranged between the inner side of the top end of the protection device body and the outer side of the top end of the switch cabinet body, each damping device comprises a first damping spring and two first fixing columns, the two first fixing columns are respectively and fixedly arranged on the inner side of the top end of the protection device body and the outer side of the top end of the switch cabinet body, and the first damping springs are vertically arranged between the two first fixing columns; the switch cabinet is characterized in that a partition plate is arranged in the switch cabinet body and divides the switch cabinet body into an upper placing chamber and a lower placing chamber. In addition, the protection device further comprises a blowing device, the blowing device comprises a blower, a first blowing pipe, a second blowing pipe and a third blowing pipe, the blower is arranged at the top end of the protection device body, the blower is respectively communicated with the first blowing pipe and the third blowing pipe, one end, far away from the blower, of the first blowing pipe vertically penetrates through the top end of the protection device body and is fixedly connected with a first telescopic pipe, the first telescopic pipe is vertically arranged between the inner side of the top end of the protection device body and the outer side of the top end of the switch cabinet body, the air outlet end of the first telescopic pipe is communicated with a first air box, the first air box is fixedly arranged at the top end of the switch cabinet body, and a plurality of first air holes communicated with the interior of the switch cabinet body are vertically formed in the bottom end of the first air box; the third blowing pipe with the second blowing pipe all sets up the protector body is outside, the inlet end of second blowing pipe with first blowing pipe intercommunication, the second blowing pipe end of giving vent to anger runs through place the room lateral wall and be connected with the flexible pipe of second down, the flexible pipe level of second sets up protector body inner wall with place between the outdoor wall down, the end intercommunication of giving vent to anger of the flexible pipe of second has the second bellows, the second bellows is fixed to be set up place the outdoor wall down, the end level of giving vent to anger of second bellows is worn to be equipped with a plurality of intercommunications and is put indoor portion's second wind hole down. Further comprises an air draft device which is arranged outside the protection device body, the air draft device comprises an exhaust fan, a first exhaust pipe and a second exhaust pipe, the exhaust fan is respectively communicated with the first exhaust pipe and the second exhaust pipe, one end of the first exhaust pipe, which is far away from the exhaust fan, horizontally penetrates through the side wall of the protection device body and is connected with a third telescopic pipe, the third telescopic pipe is horizontally arranged between the inner wall of the protection device body and the outer wall of the switch cabinet body, the second extension tube and the third extension tube are arranged on two opposite sides of the switch cabinet body, one side intercommunication that the third is flexible to be kept away from first exhaust column has the third bellows, the third bellows is fixed the setting simultaneously go up the placing chamber with place the chamber lateral wall down, a plurality of third wind holes are worn to be equipped with by the air side level of admitting air of third bellows.

Furthermore, a second damping spring is coaxially arranged outside the second telescopic pipe, second fixing columns are fixedly arranged at two ends of the second damping spring, and one ends, far away from the second damping spring, of the second fixing columns are fixedly connected with the side wall of the second air box and the inner wall of the protection device body respectively; the air outlet end of the second air blowing pipe penetrates through a second fixed column arranged on the inner wall of the protection device body and is connected with a second telescopic pipe, and the second telescopic pipe penetrates through a second fixed column arranged on the side wall of the second air box and is communicated with the second air box.

Furthermore, a third damping spring is coaxially arranged outside the third telescopic pipe, third fixing columns are fixedly arranged at two ends of the third damping spring, and one ends of the third fixing columns, which are far away from the third damping spring, are fixedly connected with the side wall of the third air box and the inner wall of the protection device body respectively; the air inlet end of the third telescopic pipe penetrates through a third fixed column arranged on the side wall of the third air bellow and is communicated with the third air bellow; and the air inlet end of the first air exhaust pipe penetrates through a third fixing column arranged on the inner wall of the protection device body and is in telescopic connection with the third fixing column.

Further, be provided with purifier on the third blowing pipe, purifier includes cartridge filter and drying cylinder, the cartridge filter is close to the inlet end setting of third blowing pipe, the drying cylinder is kept away from the inlet end setting of third blowing pipe, the cartridge filter with drying cylinder threaded connection.

Further, be provided with a plurality of filter slivers in the cartridge filter, the cartridge filter end of giving vent to anger is provided with first filter screen.

Further, a plurality of silica gel balls are arranged inside the drying cylinder, and a second filter screen is arranged at the air outlet end and the air inlet end of the drying cylinder.

Furthermore, the second exhaust pipe is provided with the purification device.

Further, the air inlet end of the third blowpipe is arranged vertically downwards.

Further, the air outlet end of the second air exhaust pipe is vertically arranged downwards.

Further, a funnel is arranged at the air inlet end of the third air blowing pipe.

Compared with the prior art, the utility model has the following beneficial effects:

1. a blowing device comprising a blower, a first blowing pipe, a second blowing pipe and the like is arranged. Can blow cold air simultaneously to the room of placing under and upwards place the room, ensure that the cubical switchboard body homoenergetic blows into cold air, and then catch up with the hot-air in the cubical switchboard body, realize radiating purpose.

2. Is provided with an air draft device comprising an exhaust fan, a first exhaust pipe, a second exhaust pipe and the like. The hot air in the switch cabinet body can be timely pumped away while the blowing device blows air, so that the unfavorable conditions that the switch cabinet body is exploded or electric appliance elements are damaged due to overlarge pressure in the switch cabinet body are prevented; and simultaneously, the aim of radiating the switch cabinet body is achieved by combining the blowing device.

3. A purification device comprising a filter cartridge and a drying cartridge is provided. The bad conditions that dust or vapor in the air enters the switch cabinet body along the blowing device and the air draft device to cause the electrical components to be damped and polluted and the like can be avoided.

Drawings

FIG. 1 is a schematic sectional view in front view;

FIG. 2 is a schematic structural view in a front view direction of the present invention;

in the figure: 100-a protection device body, 110-a support leg, 120-a damping plate, 130-a first damping spring, 140-a first fixed column, 200-a switch cabinet body, 210-a partition plate, 220-an upper placing chamber, 230-a lower placing chamber, 310-a blower, 320-a first air blowing pipe, 330-a second air blowing pipe, 331-a second telescopic pipe, 332-a second air box, 333-a second air hole, 340-a third air blowing pipe, 341-a funnel, 350-a first telescopic pipe, 360-a first air box, 361 a first air hole, 410-an exhaust fan, 420-a first air extraction pipe, 430-a second air extraction pipe, 440-a third telescopic pipe, 450-a third air box, 451-a third air hole, 510-a third damping spring, 520-a third fixed column, 610-a filter cylinder, 620-a drying cylinder, 710-a second damping spring and 720-a second fixing column.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 2 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Among the prior art, the pull-out type cubical switchboard protector of disclosing has produced the important function in the aspect of protecting the cubical switchboard cabinet body, but, at the in-process of in-service use, the electrical components in the cubical switchboard cabinet body very easily generates heat, leads to the inside heat of cubical switchboard to pile up, if these heats can not in time spill, long-time accumulation can make the temperature in the cubical switchboard very high, influences electrical components's life, electrical components's ageing with higher speed, increases user's cost. The radiator fan that above-mentioned device set up directly sets up in the cubical switchboard cabinet body top, and the air is difficult to direct access cabinet body in this portion, consequently is difficult to realize the heat dissipation purpose.

A switch cabinet with a protection structure comprises a protection device body 100 and a switch cabinet body 200, wherein the protection device body 100 is enclosed outside the switch cabinet body 200, two support legs 110 are symmetrically and fixedly installed at the bottom end of the protection device body 100, a damping plate 120 is fixedly arranged between the inner side of the bottom end of the protection device body 100 and the outer side of the bottom end of the switch cabinet body 200, two damping devices are arranged between the inner side of the top end of the protection device body 100 and the outer side of the top end of the switch cabinet body 200, each damping device comprises a first damping spring 130 and two first fixed columns 140, the two first fixed columns 140 are respectively and fixedly arranged at the inner side of the top end of the protection device body 100 and the outer side of the top end of the switch cabinet body 200, and the first damping spring 130 is vertically arranged between the two first fixed columns 140; a partition 210 is provided inside the switch cabinet body 200, and the partition 210 partitions the switch cabinet body 200 into an upper placing chamber 220 and a lower placing chamber 230. In addition, the protection device further comprises a blowing device, the blowing device comprises a blower 310, a first blowing pipe 320, a second blowing pipe 330 and a third blowing pipe 340, the blower 310 is arranged at the top end of the protection device body 100, the blower 310 is respectively communicated with the first blowing pipe 320 and the third blowing pipe 340, one end, far away from the blower 310, of the first blowing pipe 320 vertically penetrates through the top end of the protection device body 100 and is fixedly connected with a first telescopic pipe 350, the first telescopic pipe 350 is vertically arranged between the inner side of the top end of the protection device body 100 and the outer side of the top end of the switch cabinet body 200, the air outlet end of the first telescopic pipe 350 is communicated with a first air box 360, the first air box 360 is fixedly arranged at the top end of the switch cabinet body 200, and a plurality of first air holes 361 communicated with the interior of the switch cabinet body 200 are vertically arranged at the bottom end of the first air box 360; the third blowpipe 340 and the second blowpipe 330 are both arranged outside the protection device body 100, the air inlet end of the second blowpipe 330 is communicated with the first blowpipe 320, the air outlet end of the second blowpipe 330 penetrates through the side wall of the lower placing chamber 230 and is connected with a second expansion pipe 331, the second expansion pipe 331 is horizontally arranged between the inner wall of the protection device body 100 and the outer wall of the lower placing chamber 230, the air outlet end of the second expansion pipe 331 is communicated with a second air box 332, the second air box 332 is fixedly arranged on the outer wall of the lower placing chamber 230, and the air outlet end of the second air box 332 is horizontally provided with a plurality of second air holes 333 communicated with the inner part of the lower placing chamber 230. In addition, still include updraft ventilator, updraft ventilator sets up outside protector body 100, updraft ventilator includes air exhauster 410, first exhaust column 420 and second exhaust column 430, air exhauster 410 communicates with first exhaust column 420 and second exhaust column 430 respectively, first exhaust column 420 keeps away from air exhauster 410 one end level and runs through protector body 100 lateral wall and is connected with third flexible pipe 440, third flexible pipe 440 level sets up between protector body 100 inner wall and cubical switchboard body 200 outer wall, second flexible pipe 331 sets up in the both sides that cubical switchboard body 200 is relative with third flexible pipe 440, one side that first exhaust column 420 was kept away from to third flexible pipe 440 communicates with third bellows 450, third bellows 450 is fixed the setting simultaneously and is in last placing chamber 220 and lower placing chamber 230 lateral wall, a plurality of third wind holes 451 are worn to be equipped with to the side level of admitting air of third bellows 450.

During the concrete implementation, the protection device body 100 can avoid the cubical switchboard body 200 to receive the direct striking of external force and take place the impaired condition of electrical components, and the effect of external force to cubical switchboard body 200 can be slowed down when protection device body 100 receives external force impact to first damping spring 130 and the shock attenuation board 120 that set up simultaneously, and then plays the guard action. When the electrical components inside the switch cabinet body 200 generate a large amount of heat due to operation, the suction fan 410 and the blower 310 are simultaneously turned on, and the cold air outside the hood body 100 enters the blower 310 along the third blowing pipe 340 and is blown into the switch cabinet body 200 through the first blowing pipe 320 and the second blowing pipe 330. Specifically, the cold air in the first path is blown to the upper placing chamber 220 along the first air blowing pipe 320, the first extension pipe 350, the first air box 360 and the first air holes 361 in sequence, so as to achieve the purpose of exhausting the hot air in the upper placing chamber 220; furthermore, the plurality of first air holes 361 can uniformly disperse cold air into the upper placing chamber 220, so that hot air is completely discharged, and the heat dissipation efficiency is improved; in addition, in the second path, the cold air is blown to the lower placing chamber 230 along the second blowing pipe 330, the second extension pipe 331, the second air box 332, and the plurality of second air holes 333 in sequence, so as to achieve the purpose of exhausting the hot air in the lower placing chamber 230, and further, in the second path, the plurality of second air holes 333 are provided, so that the cold air is uniformly dispersed into the lower placing chamber 230, and the hot air in the lower placing chamber 230 is exhausted. Further, after cold air enters the switch cabinet body 200, the hot air in the upper placing chamber 220 and the lower placing chamber 230 is sequentially exhausted out of the switch cabinet body 200 along the plurality of third air holes 451, the third air box 450, the first exhaust pipe 420 and the exhaust fan 410, so that the switch cabinet body 200 is prevented from being exploded or electric elements are damaged due to excessive pressure in the switch cabinet body 200; meanwhile, under the combined action of the blowing device and the air draft device, the purpose of rapid heat dissipation can be achieved. Further, the hot air in the upper and lower placing chambers 230 can be completely exhausted along the third air holes 451, so that the hot air in the switch cabinet body 200 reaches zero residue. In the process, the first, second and third telescopic pipes can be adaptively telescopic when the protection device is impacted by external force, so that the first, second and third telescopic pipes can work continuously.

Example 2

On the basis of embodiment 1, a second damping spring 710 is coaxially disposed outside the second extension tube 331, a second fixing column 720 is fixedly disposed at both ends of the second damping spring 710, and one end of the second fixing column 720, which is far away from the second damping spring 710, is fixedly connected to the side wall of the second bellows 332 and the inner wall of the protector body 100, respectively; the air outlet end of the second air blowing pipe 330 penetrates through a second fixed column 720 arranged on the inner wall of the protection device body 100 and is connected with a second telescopic pipe 331, and the second telescopic pipe 331 penetrates through the second fixed column 720 arranged on the side wall of the second air box 332 and is communicated with the second air box 332. Further, a third damping spring 510 is coaxially arranged outside the third telescopic tube 440, both ends of the third damping spring 510 are fixedly provided with a third fixing column 520, and one end of the third fixing column 520 far away from the third damping spring 510 is respectively and fixedly connected with the side wall of the third bellows 450 and the inner wall of the protector body 100; the air inlet end of the third telescopic pipe 440 penetrates through a third fixed column 520 arranged on the side wall of the third bellows 450 and is communicated with the third bellows 450; the air inlet end of the first exhaust pipe 420 penetrates through the third fixing column 520 arranged on the inner wall of the protection device body 100 and is connected with the third telescopic column. Further, a purification device is arranged on the third blowpipe 340, the purification device comprises a filter cartridge 610 and a drying cylinder 620, the filter cartridge 610 is arranged close to the air inlet end of the third blowpipe 340, the drying cylinder 620 is arranged far away from the air inlet end of the third blowpipe 340, and the filter cartridge 610 is in threaded connection with the drying cylinder 620. Further, a plurality of filter cotton slivers are arranged in the filter cartridge 610, and a first filter screen is arranged at the air outlet end of the filter cartridge 610; inside being provided with a plurality of silica gel balls of drying cylinder 620, the end of giving vent to anger and the inlet end of drying cylinder 620 all are provided with the second filter screen. Further, a purification device is disposed on the second exhaust pipe 430. The air inlet end of the third blowpipe 340 and the air outlet end of the second exhaust pipe 430 are both arranged vertically downwards; further, the air intake end of the third blowing pipe 340 is provided with a funnel 341.

During specific implementation, the second damping spring 710 and the second fixing column 720 which are arranged outside the second telescopic tube 331 and the third damping spring 510 and the third fixing column 520 which are arranged outside the third telescopic tube 440 can both play a certain role in protecting the second and third telescopic tubes when external force acts on the outside of the protection device body 100, and meanwhile, collision and friction between the protection device body 100 and the switch cabinet body 200 can be avoided, and the protection effect on the switch cabinet body 200 can be also played, so that the influence of the external force on the protection device body is reduced. Further, purifier who sets up among the blast apparatus can play certain purification effect to the air that gets into in the cubical switchboard body 200, and is concrete, and filter cartridge 610 among the purifier can filter the impurity in the air, and the silica gel ball in the drying cylinder 620 can detach the vapor in the air, and then makes the cold air that blows to in the cubical switchboard body 200 clean and dry, prevents that the cubical switchboard body 200 from weing, receiving dirt and influencing electrical components's working property, causes a series of dangers such as electric leakage, conflagration even. Further, the purification device in the ventilation device can prevent the dust in the switch cabinet body 200 from blowing to the air, thereby causing air pollution, and simultaneously, can also prevent the water vapor and impurities in the outside air from entering the switch cabinet body 200 when the exhaust fan 410 is not in operation. Further, the air inlet end of the third blowing pipe 340 and the air outlet end of the second exhaust pipe 430 are both vertically and downwardly disposed, so that rainwater can be prevented from entering the third blowing pipe 340 and the second exhaust pipe 430. Further, the funnel 341 disposed at the air inlet end of the third blowing pipe 340 can increase the contact area between the air and the air inlet end, so as to increase the gas extraction rate of the exhaust fan 410 and increase the heat dissipation rate of the switch cabinet body 200.

The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the utility model is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a cubical switchboard with protective structure which characterized in that: comprises a protective device body (100) and a switch cabinet body (200), wherein the protective device body (100) is arranged outside the switch cabinet body (200) in an enclosing way, two support legs (110) are symmetrically and fixedly arranged at the bottom end of the protection device body (100), a damping plate (120) is fixedly arranged between the inner side of the bottom end of the protection device body (100) and the outer side of the bottom end of the switch cabinet body (200), two damping devices are arranged between the inner side of the top end of the protection device body (100) and the outer side of the top end of the switch cabinet body (200), each damping device comprises a first damping spring (130) and two first fixing columns (140), the two first fixing columns (140) are respectively and fixedly arranged on the inner side of the top end of the protection device body (100) and the outer side of the top end of the switch cabinet body (200), the first damping spring (130) is vertically arranged between the two first fixing columns (140); a partition plate (210) is arranged in the switch cabinet body (200), and the switch cabinet body (200) is divided into an upper placing chamber (220) and a lower placing chamber (230) by the partition plate (210);

the protective device further comprises a blowing device, the blowing device comprises a blower (310), a first blowing pipe (320), a second blowing pipe (330) and a third blowing pipe (340), the blower (310) is arranged at the top end of the protective device body (100), the blower (310) is respectively communicated with the first blowing pipe (320) and the third blowing pipe (340), one end, far away from the blower (310), of the first blowing pipe (320 vertically penetrates through the top end of the protective device body (100) and is fixedly connected with a first telescopic pipe (350), the first telescopic pipe (350) is vertically arranged between the inner side of the top end of the protective device body (100) and the outer side of the top end of the switch cabinet body (200), the air outlet end of the first telescopic pipe (350) is communicated with a first air box (360), and the first air box (360) is fixedly arranged at the top end of the switch cabinet body (200), a plurality of first air holes (361) communicated with the interior of the switch cabinet body (200) are vertically arranged at the bottom end of the first air box (360) in a penetrating manner; the third air blowing pipe (340) and the second air blowing pipe (330) are arranged outside the protection device body (100), the air inlet end of the second air blowing pipe (330) is communicated with the first air blowing pipe (320), the air outlet end of the second air blowing pipe (330) penetrates through the side wall of the lower placing chamber (230) and is connected with a second telescopic pipe (331), the second telescopic pipe (331) is horizontally arranged between the inner wall of the protection device body (100) and the outer wall of the lower placing chamber (230), the air outlet end of the second telescopic pipe (331) is communicated with a second air box (332), the second air box (332) is fixedly arranged on the outer wall of the lower placing chamber (230), and a plurality of second air holes (333) communicated with the interior of the lower placing chamber (230) are horizontally formed in the air outlet end of the second air box (332);

the air draft device is arranged outside the protection device body (100) and comprises an exhaust fan (410), a first exhaust pipe (420) and a second exhaust pipe (430), the exhaust fan (410) is respectively communicated with the first exhaust pipe (420) and the second exhaust pipe (430), one end of the first exhaust pipe (420) far away from the exhaust fan (410) horizontally penetrates through the side wall of the protection device body (100) and is connected with a third telescopic pipe (440), the third telescopic pipe (440) is horizontally arranged between the inner wall of the protection device body (100) and the outer wall of the switch cabinet body (200), the second telescopic pipe (331) and the third telescopic pipe (440) are arranged on two opposite sides of the switch cabinet body (200), one side of the third telescopic pipe (440) far away from the first exhaust pipe (420) is communicated with a third bellows (450), the third air box (450) is simultaneously and fixedly arranged on the side walls of the upper placing chamber (220) and the lower placing chamber (230), and a plurality of third air holes (451) are horizontally arranged on the air inlet side of the third air box (450) in a penetrating mode.

2. The switch cabinet with a protective structure according to claim 1, characterized in that: a second damping spring (710) is coaxially arranged outside the second telescopic pipe (331), second fixing columns (720) are fixedly arranged at two ends of the second damping spring (710), and one ends, far away from the second damping spring (710), of the second fixing columns (720) are fixedly connected with the side wall of the second air box (332) and the inner wall of the protection device body (100) respectively; the air outlet end of the second air blowing pipe (330) penetrates through a second fixed column (720) arranged on the inner wall of the protection device body (100) and is connected with a second telescopic pipe (331), and the second telescopic pipe (331) penetrates through the second fixed column (720) arranged on the side wall of the second air box (332) and is communicated with the second air box (332).

3. The switch cabinet with a protective structure according to claim 1, characterized in that: a third damping spring (510) is coaxially arranged outside the third telescopic pipe (440), both ends of the third damping spring (510) are fixedly provided with third fixing columns (520), and one ends, far away from the third damping spring (510), of the third fixing columns (520) are respectively and fixedly connected with the side wall of the third air box (450) and the inner wall of the protection device body (100); the air inlet end of the third telescopic pipe (440) penetrates through a third fixed column (520) arranged on the side wall of the third air box (450) and is communicated with the third air box (450); the air inlet end of the first exhaust pipe (420) penetrates through a third fixing column (520) arranged on the inner wall of the protection device body (100) and is in telescopic connection with the third fixing column.

4. The switch cabinet with a protective structure according to claim 1, characterized in that: the third blowpipe (340) is provided with purification device, purification device includes cartridge filter (610) and drying cylinder (620), cartridge filter (610) are close to the inlet end setting of third blowpipe (340), drying cylinder (620) are kept away from the inlet end setting of third blowpipe (340), cartridge filter (610) with drying cylinder (620) threaded connection.

5. The switch cabinet with the protection structure according to claim 4, wherein: a plurality of filtering cotton slivers are arranged in the filter cartridge (610), and a first filter screen is arranged at the air outlet end of the filter cartridge (610).

6. The switch cabinet with the protection structure according to claim 4, wherein: the inside a plurality of silica gel balls that are provided with of drying cylinder (620), the end of giving vent to anger and the inlet end of drying cylinder (620) all are provided with the second filter screen.

7. The switch cabinet with the protection structure according to claim 4, wherein: the second exhaust pipe (430) is provided with the purification device.

8. The switch cabinet with a protective structure according to claim 1, characterized in that: the air inlet end of the third air blowing pipe (340) is vertically arranged downwards.

9. The switch cabinet with a protective structure according to claim 1, characterized in that: and the air outlet end of the second air exhaust pipe (430) is vertically arranged downwards.

10. The switch cabinet with a protective structure according to claim 1, characterized in that: the air inlet end of the third air blowing pipe (340) is provided with a funnel (341).