Multi-level protection type intelligent switch equipment

Abstract

The invention discloses a multi-level protection type intelligent switch device, relates to the field of switch devices, and solves the problem that an existing switch device is difficult to release pressure in time, the multi-level protection type intelligent switch device comprises a device shell and a mounting frame mounted on the outer side of the device shell, a ventilation box is mounted on the inner side of the mounting frame, and a ventilation plate is slidably mounted on the inner side of the ventilation box; a plurality of first ventilation holes are formed in the two sides of the ventilation box, and a plurality of second ventilation holes are formed in the outer side of the ventilation plate; the pressure relief mechanism is used for relieving pressure of the equipment shell in time, and the pressure relief mechanism is installed on the inner side of the ventilation box; by means of the pressure relief mechanism, when the air pressure in the equipment shell is increased, the ventilation plate can move downwards, second ventilation holes in the ventilation plate can gradually abut against first ventilation holes in the ventilation box, high-temperature air in the equipment shell can be gradually exhausted outwards from the first ventilation holes and the second ventilation holes, and the safety during air leakage is improved; therefore, the effect of timely air leakage is achieved.

Description

Technical Field

[0001] The present invention relates to the field of switchgear, and in particular to a multi-level protection type intelligent switchgear. Background Art

[0002] Switchgear is a device used to control, protect and isolate electrical equipment in power systems. It is widely used in power generation, transmission, distribution and consumption. Common switchgear includes circuit breakers, disconnectors, load switches, fuses, etc.

[0003] Multi-level protection switchgear refers to a combination of switchgear that works together through multi-level protection mechanisms to achieve precise isolation and protection of faults at different levels of the power system. Its core goal is to improve system reliability, selectivity and safety, and ensure that the scope of fault impact is minimized. When a short-circuit fault occurs in existing switchgear, high-temperature and high-pressure gas will be instantly generated due to the short-circuit current of tens of thousands of amperes. If the expanding gas cannot be released quickly, it will cause the switchgear to explode. Existing switchgear will install two elastic guide baffles on its outside and use electromagnets for adsorption and positioning. Although it can achieve rapid gas pressure relief, the electromagnet needs to be powered off before it can release the elastic guide baffle. If the power is not cut off in time, the pressure cannot be relieved in time, which reduces safety. In addition, the thrust of the gas during pressure relief is large, which can easily cause the elastic guide baffle to directly hit the pressure relief port and cause damage, making it difficult to reset automatically. Summary of the Invention

[0004] The object of the present invention is to provide a multi-level protection type intelligent switchgear to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A multi-level protection type intelligent switch device comprises: an equipment housing and an installation frame fixedly installed on the outside of the equipment housing, a ventilation box fixedly installed on the inner side of the installation frame, a ventilation plate slidably installed on the inner side of the ventilation box, a plurality of first ventilation holes distributed at equal intervals are provided on the outer side of the ventilation box, and a plurality of second ventilation holes distributed at equal intervals are provided on the outer side of the ventilation plate; further comprising: a pressure relief mechanism for timely relieving pressure on the equipment housing, the pressure relief mechanism being installed on the inner side of the ventilation box; a fixed plate mechanism for positioning and relieving pressure on the ventilation plate, the fixed plate mechanism being installed on the top of the ventilation plate; an air guide mechanism for safely discharging high-temperature gas in the equipment housing, the air guide mechanism being installed on the outer side of the ventilation box.

[0006] Preferably, the pressure relief mechanism includes two mounting rods symmetrically fixedly mounted on the bottom of the breathable plate, a push frame fixedly mounted between the two mounting rods, a telescopic air bag fixedly mounted on the bottom inner wall of the breathable box, the top of the telescopic air bag fixedly connected to the bottom of the push frame, a square opening located on the outside of the telescopic air bag is opened on the outside of the breathable box, two symmetrically distributed positioning slides are fixedly mounted on the inside of the breathable box, the positioning slides slide through the breathable plate, an L-shaped bracket is fixedly mounted on the outside of the positioning slide, the telescopic air bag is located between the two L-shaped brackets, a first spring is provided on the outside of the positioning slide, and the first spring is fixedly mounted between the top of the breathable plate and the top inner wall of the breathable box.

[0007] Preferably, the fixed plate mechanism includes a top block fixedly mounted on the top of the air permeable plate, an installation cavity is provided on the inner side of the top block, a positioning block is slidably mounted on the inner side of the installation cavity, a plurality of second springs distributed at equal distances are fixedly mounted between the positioning block and the inner side of the installation cavity, a card slot for limiting the insertion of the positioning block is provided on the inner side of the air permeable box, and the height of the card slot is greater than the height of the positioning block, two symmetrically distributed square frames are fixedly mounted on the side of the positioning block close to the second spring, a positioning plate is slidably mounted on the inner side of the square frame, and the bottom of the positioning plate is an inclined structure, and the inner sides of the air permeable plate and the top block are both provided with insertion cavities for limiting the sliding of the positioning plate.

[0008] Preferably, the air guide mechanism includes a sealing plate arranged on the outside of the first air vent, a rotating rod is rotatably installed on the bottom of the sealing plate, and the rotating rod is rotatably installed on the inner side of the air box, both ends of the rotating rod are fixedly installed with a first gear, and the inner side of the air box is rotatably installed with a second gear engaged with the first gear, and the air plate close to the sealing plate is fixedly installed with a rack plate engaged with the second gear, both sides of the sealing plate are fixedly installed with guide baffles, and the inner side of the sealing plate is an arc structure, which is convenient for high-temperature hot air to be discharged upward, a metal strip is fixedly installed on the side of the sealing plate away from the first air vent, a baffle is fixedly installed on the bottom of the first air vent, and the baffle is an inclined structure on the side close to the sealing plate.

[0009] Preferably, a rubber sleeve is fixedly mounted on the outer side of the installation frame, and a frame-shaped groove for mounting the rubber sleeve is provided on the outer side of the device housing.

[0010] Preferably, an air injection valve is fixedly mounted on the outer side of the telescopic airbag, and the air injection valve extends to the outer side of the breathable box.

[0011] Preferably, sliding balls are rotatably mounted on both sides of the push frame, and a sliding groove for limiting the sliding of the sliding balls is provided on the outer side of the L-shaped bracket.

[0012] Preferably, two symmetrically distributed rubber pads are fixedly mounted on the bottom of the air-permeable plate, and the rubber pads are located directly above the L-shaped bracket.

[0013] Preferably, a guide sleeve is fixedly mounted on the outer side of the square sleeve, a sliding cavity is provided on the inner side of the mounting cavity of the top block for limiting the sliding of the guide sleeve, and an optical axis that slides through the guide sleeve is fixedly mounted on the inner side of the sliding cavity.

[0014] Preferably, two symmetrically distributed pulley rods are fixedly mounted on the outer side of the top block, a long groove for limiting the sliding of the pulley rods is opened on the outer side of the breathable box, and an annular handle is fixedly mounted between the two pulley rods.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses a pressure relief mechanism to move the air plate downward when the air pressure in the device casing increases, so that the second air hole on the air plate and the first air hole on the air box can gradually approach each other, so that the high-temperature gas in the device casing can gradually be discharged outward from the first air hole and the second air hole, thereby improving the safety during air release and achieving the effect of timely air release.

[0016] The present invention uses a fixed plate mechanism, so that when the first air hole is aligned with the second air hole, the square sleeve frame on the positioning card block can be moved away from the positioning plate, and the rebound force of the second spring is used to insert the positioning card block into the card slot of the air box, providing a limit for the movement of the air plate, ensuring that the first air hole is aligned with the second air hole, facilitating rapid deflation, and thus improving the deflation efficiency.

[0017] The present invention uses an air guide mechanism, which can enable the rack plate to cooperate with the second rack to drive the first gear to rotate during the movement of the breathable plate. The first gear can drive the sealing plate to swing outward through the rotating rod, and utilize the weight of the metal block to keep the sealing plate in an inclined state, providing a guide for the discharge of high-temperature hot air, facilitating the high-temperature gas to be discharged outward in an inclined state, thereby achieving the effect of safe deflation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the mounting frame and the rubber sleeve frame in the present invention; Figure 3 Schematic diagram of the sealing plate and the breathable box structure of the present invention; Figure 4 for Figure 3Schematic diagram of the enlarged structure of area A in the middle; Figure 5 Schematic diagram of the structure of the breathable plate and the telescopic airbag in the present invention; Figure 6 Schematic diagram of the top block and pulley rod structure in the present invention; Figure 7 This is a schematic diagram of the positioning block and positioning plate structure in the present invention; Figure 8 It is a schematic diagram of the guide sleeve and square sleeve frame structure in the present invention.

[0019] In the figure: 1. Equipment housing; 2. Mounting frame; 3. Breathing box; 4. Breathing plate; 5. First breather hole; 6. Second breather hole; 7. Mounting rod; 8. Push frame; 9. Telescopic airbag; 10. Positioning slide bar; 11. L-shaped bracket; 12. First spring; 13. Top block; 14. Positioning block; 15. Second spring; 16. Square sleeve; 17. Positioning plate; 18. Sealing plate; 19. Rotating rod; 20. First gear; 21. Second gear; 22. Rack plate; 23. Guide baffle; 24. Metal strip; 25. Rubber sleeve; 26. Air injection valve; 27. Sliding ball; 28. Rubber pad; 29. ​​Guide sleeve; 30. Optical axis; 31. Pulley rod; 32. Ring handle; 33. Baffle. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1-8The figure shows a multi-level protection type intelligent switch device, including a device housing 1 and a mounting frame 2 fixedly mounted on the outside of the device housing 1. A ventilation box 3 is fixedly mounted on the inside of the mounting frame 2, and a ventilation plate 4 is slidably mounted on the inside of the ventilation box 3. A plurality of first ventilation holes 5 distributed at equal intervals are opened on the outside of the ventilation box 3, and a plurality of second ventilation holes 6 distributed at equal intervals are opened on the outside of the ventilation plate 4. When the first ventilation holes 5 on the ventilation box 3 are aligned with the second ventilation holes 6 on the ventilation plate 4, the air in the device housing 1 is The air can be discharged outward from the first air vent 5 and the second air vent 6, and when the air plate 4 moves, the first air vent 5 and the second air vent 6 can be staggered to achieve sealing of the air box 3; it also includes: a pressure relief mechanism, which is used to timely relieve pressure on the equipment housing 1, and the pressure relief mechanism is installed on the inner side of the air box 3; a fixed plate mechanism, which is used to position the air plate 4 for pressure relief, and the fixed plate mechanism is installed on the top of the air plate 4; an air guide mechanism, which is used to safely discharge the high-temperature gas in the equipment housing 1, and the air guide mechanism is installed on the outer side of the air box 3.

[0022] The pressure relief mechanism includes two mounting rods 7 symmetrically fixedly mounted on the bottom of the breathable plate 4, a push frame 8 is fixedly mounted between the two mounting rods 7, a telescopic airbag 9 is fixedly mounted on the bottom inner wall of the breathable box 3, the top of the telescopic airbag 9 is fixedly connected to the bottom of the push frame 8, and a square opening is provided on the outside of the breathable box 3 on the outside of the telescopic airbag 9. When the air pressure in the device housing 1 increases, the telescopic airbag 9 can be correspondingly contracted, and the telescopic airbag 9 can pull the push frame 8 downward, and the push frame 8 pulls the breathable plate 4 to move through the mounting rods 7, so that the first The second vent hole 6 is close to the first vent hole 5 on the vent box 3 to achieve timely pressure relief of the device housing 1. Two symmetrically distributed positioning slides 10 are fixedly installed on the inner side of the vent box 3. The positioning slide 10 slides through the vent plate 4 to provide a guide for the movement of the vent plate 4 and improve the stability of the movement of the vent plate 4. An L-shaped bracket 11 is fixedly installed on the outer side of the positioning slide 10. The telescopic airbag 9 is located between the two L-shaped brackets 11 to provide a guide for the telescopic movement of the telescopic airbag 9, so that the telescopic airbag 9 can pull the push frame 8 to move. The outer side of the positioning slide 10 is set There is a first spring 12, which is fixedly installed between the top of the breathable plate 4 and the top inner wall of the breathable box 3, so that when the telescopic airbag 9 is contracted, the rebound force of the first spring 12 can be used to make the breathable plate 4 move downward quickly. A rubber sleeve 25 is fixedly installed on the outside of the mounting frame 2, and a frame-shaped groove for installing the rubber sleeve 25 is opened on the outside of the device housing 1 to improve the sealing between the mounting frame 2 and the device housing 1. An air injection valve 26 is fixedly installed on the outside of the telescopic airbag 9, and the air injection valve 26 extends to the outside of the breathable box 3, which is convenient for staff to pass through The air injection valve 26 injects gas into the telescopic airbag 9, and sliding balls 27 are rotatably installed on both sides of the push frame 8. A sliding groove for the sliding ball 27 to limit the sliding of the sliding ball 27 is provided on the outside of the L-shaped bracket 11, thereby improving the smoothness of the movement of the push frame 8, preventing the push frame 8 from moving crookedly, and reducing the friction between the push frame 8 and the L-shaped bracket 11. Two symmetrically distributed rubber pads 28 are fixedly installed on the bottom of the air breathable plate 4. The rubber pads 28 are located directly above the L-shaped bracket 11, providing a buffer for the downward movement of the air breathable plate 4, thereby improving the durability of the air breathable plate 4 and the L-shaped bracket 11.

[0023] Example 2: Please refer to Figure 3-Figure 8, this embodiment further explains Example 1. The fixed plate mechanism in the figure includes a top block 13 fixedly mounted on the top of the breathable plate 4, so that when the telescopic airbag 9 is expanded and extended, the top block 13 on the breathable plate 4 can contact the top inner wall of the breathable box 3 to provide protection for the breathable plate 4. A mounting cavity is provided on the inner side of the top block 13, and a positioning block 14 is slidably mounted on the inner side of the mounting cavity. A plurality of second springs 15 with equal distances are fixedly mounted between the positioning block 14 and the inner side of the mounting cavity. A card slot for the positioning block 14 to limit the insertion is provided on the inner side of the breathable box 3, and the height of the card slot is greater than the height of the positioning block 14, so that the breathable When the plate 4 moves, it can drive the positioning block 14 to move downward through the top block 13. When the positioning block 14 is aligned with the card slot, the rebound force of the second spring 15 is used to insert the positioning block 14 into the card slot, ensuring that the first air hole 5 on the breathable box 3 is aligned with the second air hole 6 on the breathable plate 4, so as to achieve rapid discharge of gas. Two symmetrically distributed square frames 16 are fixedly installed on the side of the positioning block 14 close to the second spring 15. A positioning plate 17 is slidably installed on the inner side of the square frame 16. The bottom of the positioning plate 17 is a sloped structure. When the breathable plate 4 moves downward, the square frame 16 can move along the outer side of the positioning plate 17. When the vent plate 4 is moved upward, the inner side of the square frame 16 contacts the inclined surface of the bottom of the positioning plate 17, and the reaction force of the positioning plate 17 on the square frame 16 is used to pull the positioning block 14 into the installation cavity, thereby realizing the recovery of the positioning block 14 and preventing the positioning block 14 from pressing against the inner side of the vent box 3, thereby ensuring the normal reset of the vent plate 4. The inner sides of the vent plate 4 and the top block 13 are both provided with an insertion cavity for the limited sliding of the positioning plate 17. The square frame 16 A guide sleeve 29 is fixedly installed on the outside of the top block 13, and a sliding cavity is provided on the inner side of the installation cavity of the top block 13 for limiting the sliding of the guide sleeve 29, and an optical axis 30 that slides through the guide sleeve 29 is fixedly installed on the inner side of the sliding cavity to provide guidance for the movement of the positioning block 14 to prevent the positioning block 14 from tilting during movement. Two symmetrically distributed pulley rods 31 are fixedly installed on the outside of the top block 13, and a long groove is provided on the outside of the breathable box 3 for limiting the sliding of the pulley rod 31. A ring handle 32 is fixedly installed between the two pulley rods 31 to facilitate manual resetting of the breathable plate 4 upwards and replenishment of gas in the telescopic airbag 9.

[0024] Example 3: Please refer to Figure 3 and Figure 4, this embodiment is further described for other embodiments. The air guide mechanism in the figure includes a sealing plate 18 arranged on the outside of the first air vent 5, and a rotating rod 19 is rotatably installed at the bottom of the sealing plate 18. The rotating rod 19 is rotatably installed on the inner side of the air box 3. Both ends of the rotating rod 19 are fixedly installed with a first gear 20. The inner side of the air box 3 is rotatably installed with a second gear 21 meshing with the first gear 20. A rack plate 22 meshing with the second gear 21 is fixedly installed on the side of the air plate 4 close to the sealing plate 18, so that when the air plate 4 moves downward, the first gear 20 can be driven to rotate by the rack plate 22 and the second gear 21, and the first gear 20 can drive the rotating rod 19 to rotate synchronously, so that the rotating rod 19 can bring The dynamic sealing plate 18 opens the first air vent 5 and is in an inclined state, providing guidance for the discharge of high-temperature gas, so that the high-temperature hot gas can be discharged upward, improving the safety during pressure relief. Guide baffles 23 are fixedly installed on both sides of the sealing plate 18, and the inner side of the sealing plate 18 is an arc-shaped structure, which is convenient for the upward discharge of high-temperature hot gas. A metal strip 24 is fixedly installed on the side of the sealing plate 18 away from the first air vent 5, and a baffle 33 is fixedly installed on the bottom of the first air vent 5, and the side of the baffle 33 close to the sealing plate 18 is an inclined structure, so that when the rack plate 22 is away from the second gear 21, the sealing plate 18 contacts the inclined surface of the baffle 33, and the weight of the metal strip 24 is used to keep the sealing plate 18 in an inclined state.

[0025] Working principle: When a short circuit occurs in the electrical equipment in the device housing 1, the high-temperature gas generated gradually increases the air pressure in the device housing 1. The telescopic airbag 9 is affected by the gradually increasing air pressure and is in a contracted state. At this time, the telescopic airbag 9 pulls the push frame 8 to move downward, and the push frame 8 drives the mounting rod 7 to move synchronously. The rebound force of the first spring 12 is used to make the mounting rod 7 cooperate with the first spring 12 to drive the ventilation plate 4 to move downward along the inner side of the ventilation box 3. The second ventilation hole 6 on the ventilation plate 4 is close to the first ventilation hole 5 on the ventilation box 3. , so that the gas in the equipment housing 1 can be discharged outward from the first air vent 5 and the second air vent 6. At the same time, the air vent plate 4 drives the top block 13 and the rack plate 22 to move downward synchronously, and the rack plate 22 drives the second gear 21 to rotate, so that the second gear 21 drives the first gear 20 to rotate. The first gear 20 drives the sealing plate 18 to swing outward through the rotating rod 19 and contacts the inclined surface of the baffle 33 on the inner side of the first air vent 5, so that the sealing plate 18 is in a tilted state to open the first air vent 5. At the same time, the top block 13 drives the positioning card through the installation cavity The block 14 moves synchronously, so that the square sleeve 16 on the outside of the positioning block 14 moves downward along the outside of the positioning plate 17. When the positioning block 14 is aligned with the card slot, the square sleeve 16 is away from the bottom end of the positioning plate 17. The rebound force of the second spring 15 is used to insert the positioning block 14 into the card slot of the ventilation box 3, providing a limit for the movement of the ventilation plate 4. At this time, the second ventilation hole 6 on the ventilation plate 4 is completely aligned with the first ventilation hole 5 on the ventilation box 3, and the high-temperature gas in the equipment housing 1 can pass through the first ventilation hole 5 and the second ventilation hole 6 is discharged outwardly along the arc surface of the sealing plate 18 and between the two guide baffles 23. Finally, as the air pressure in the device housing 1 decreases, the telescopic airbag 9 expands again, causing the breathable plate 4 to reset upward, and the inner side of the square frame 16 contacts the inclined surface of the bottom of the positioning plate 17. The reaction force of the positioning plate 17 on the square frame 16 is used to pull the positioning block 14 into the installation cavity. The second breathable hole 6 can be staggered with the first breathable hole 5, thereby realizing the sealing of the breathable box 3, thereby achieving the effect of timely and safe exhaust.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0027] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-level protection intelligent switchgear, characterized in that: include: A device housing (1) and a mounting frame (2) mounted on the outside of the device housing (1); a ventilation box (3) is mounted on the inside of the mounting frame (2); a ventilation plate (4) is slidably mounted on the inside of the ventilation box (3); a plurality of first ventilation holes (5) are provided on both sides of the ventilation box (3); and a plurality of second ventilation holes (6) are provided on the outside of the ventilation plate (4); Also includes: A pressure relief mechanism, used for timely pressure relief of the device housing (1), the pressure relief mechanism being installed on the inner side of the breathable box (3); A fixed plate mechanism, used for positioning and relieving pressure on the air permeable plate (4), the fixed plate mechanism being mounted on the top of the air permeable plate (4); An air guide mechanism is used for safely discharging high-temperature gas in the device housing (1), and the air guide mechanism is installed on the outside of the breathable box (3).

2. The multi-level protection intelligent switchgear according to claim 1, characterized in that: The pressure relief mechanism comprises two mounting rods (7) mounted on the bottom of the air vent plate (4), a push frame (8) is fixedly mounted between the two mounting rods (7), a telescopic air bag (9) is mounted on the bottom inner wall of the air vent box (3), the top of the telescopic air bag (9) is fixedly connected to the bottom of the push frame (8), a square opening is provided on the outside of the telescopic air bag (9), two positioning slides (10) are mounted on the inside of the air vent box (3), the positioning slides (10) slide through the air vent plate (4), an L-shaped bracket (11) is fixedly mounted on the outside of the positioning slides (10), a first spring (12) is provided on the outside of the positioning slides (10), and the first spring (12) is fixedly mounted between the top of the air vent plate (4) and the top inner wall of the air vent box (3).

3. The multi-level protection intelligent switchgear according to claim 2, characterized in that: The fixed plate mechanism comprises a top block (13) mounted on the top of the air-permeable plate (4), an installation cavity is provided on the inner side of the top block (13), a positioning block (14) is slidably mounted on the inner side of the installation cavity, a plurality of second springs (15) are fixedly mounted between the positioning block (14) and the inner side of the installation cavity, a card slot for limiting insertion of the positioning block (14) is provided on the inner side of the air-permeable box (3), and the height of the card slot is greater than the height of the positioning block (14), two square sleeves (16) are fixedly mounted on one side of the positioning block (14), a positioning plate (17) is slidably mounted on the inner side of the square sleeve (16), and the bottom of the positioning plate (17) is in an inclined structure, and the inner sides of the air-permeable plate (4) and the top block (13) are both provided with an insertion cavity for limiting sliding of the positioning plate (17).

4. The multi-level protection intelligent switchgear according to claim 3, characterized in that: The air guide mechanism includes a sealing plate (18) arranged on the outside of the first air vent (5), a rotating rod (19) is rotatably mounted on the bottom of the sealing plate (18), and the rotating rod (19) is rotatably mounted on the inner side of the air box (3), and first gears (20) are fixedly mounted on both ends of the rotating rod (19), and a second gear (21) meshing with the first gear (20) is rotatably mounted on the inner side of the air box (3), a rack plate (22) meshing with the second gear (21) is fixedly mounted on one side of the air vent plate (4), and flow guide baffles (23) are fixedly mounted on both sides of the sealing plate (18), and a metal strip (24) is fixedly mounted on one side of the sealing plate (18), and a baffle (33) is fixedly mounted on the bottom of the first air vent (5), and the baffle (33) has an inclined surface structure on the side close to the sealing plate (18).

5. The multi-level protection intelligent switchgear according to claim 2, characterized in that: A rubber sleeve frame (25) is fixedly mounted on the outer side of the installation frame (2), and a frame-shaped groove for mounting the rubber sleeve frame (25) is provided on the outer side of the device housing (1).

6. The multi-level protection intelligent switchgear according to claim 2, characterized in that: An air injection valve (26) is fixedly mounted on the outer side of the telescopic airbag (9).

7. The multi-level protection intelligent switchgear according to claim 2, characterized in that: Sliding balls (27) are rotatably mounted on both sides of the push frame (8), and a sliding groove for limiting the sliding of the sliding balls (27) is provided on the outer side of the L-shaped bracket (11).

8. The multi-level protection intelligent switchgear according to claim 2, characterized in that: Two rubber pads (28) are fixedly mounted on the bottom of the air permeable plate (4), and the rubber pads (28) are located directly above the L-shaped bracket (11).

9. The multi-level protection intelligent switchgear according to claim 3, characterized in that: A guide sleeve (29) is installed on the outside of the square sleeve frame (16), a sliding cavity for limiting the sliding of the guide sleeve (29) is opened on the inside of the installation cavity of the top block (13), and an optical axis (30) that slides through the guide sleeve (29) is fixedly installed on the inside of the sliding cavity.

10. The multi-level protection intelligent switchgear according to claim 3, characterized in that: Two pulley rods (31) are fixedly mounted on the outside of the top block (13), and a long groove for limiting the sliding of the pulley rods (31) is opened on the outside of the air-permeable box (3), and an annular handle (32) is fixedly mounted between the two pulley rods (31).

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