Alternating current high voltage armored drawer type intelligent vacuum switch cabinet

Abstract

The application discloses an alternating current high-voltage armored drawer type intelligent vacuum switch cabinet, which comprises an armored cabinet body, three chambers are arranged in the armored cabinet body from top to bottom, and the three chambers are respectively an instrument chamber, a circuit breaker trolley chamber and a cable chamber; and a partition insulating plate is fixedly connected between every two chambers. The armored cabinet body, the chambers, the partition insulating plate, the air inlet mechanism, the heat dissipation frame, the heat dissipation channel, the air suction fan and the protective grating are cooperated with each other, the chambers are divided into three independent chambers from top to bottom, the air inlet mechanism can dynamically adjust the ventilation opening degree of the heat dissipation opening according to the heat generation in the chambers, the air suction fan is matched with the heat dissipation channel to concentrate air suction and heat dissipation of the chambers, and the protective grating protects the air suction fan from external objects, so that the problem that the heat dissipation opening of the traditional switch cabinet is not adjustable and the heat dissipation effect does not match the actual load is solved, and the heat dissipation capacity and the dustproof performance are considered.

Description

Technical Field

[0001] This invention relates to the field of switchgear technology, specifically to an AC high-voltage armored drawer-type intelligent vacuum switchgear. Background Technology

[0002] High-voltage armored drawer-type vacuum switchgear is widely used in power distribution sites such as industrial and mining enterprises and substations, mainly for the distribution, control, and protection of electrical energy. Existing armored drawer-type switchgear typically consists of multiple independent chambers, including an instrument compartment, a circuit breaker compartment, and a cable compartment. Each chamber generates varying degrees of heat during operation, necessitating appropriate heat dissipation structures to ensure long-term reliable operation.

[0003] Currently, most similar switchgear on the market uses fixed openings for heat dissipation. The flow area of ​​the ventilation openings cannot be dynamically adjusted according to the actual load of the equipment and the temperature rise of the chamber. When the equipment is under high load and generates severe heat, the ventilation is insufficient, resulting in inadequate heat dissipation and accelerated aging of the insulation components inside the cabinet. Under light load or standby conditions, the ventilation openings remain open, allowing external dust to easily enter the cabinet chamber through the ventilation channels. Dust accumulation on the surface of the insulation components reduces insulation performance and poses a safety hazard to the equipment operation. Traditional switchgear heat dissipation systems lack a centralized heat dissipation structure, resulting in dispersed heat dissipation from each chamber and limited heat dissipation efficiency. Furthermore, the lack of external protection for the cooling fans allows foreign objects to easily contact and damage the fans, further affecting the normal operation of the heat dissipation system.

[0004] On the other hand, traditional switchgear lacks airflow blocking protection in fault conditions. When a short circuit or arcing fault occurs inside the switchgear, outside air can continuously enter the chamber through the heat dissipation channel, continuously supplying oxygen and easily fueling the fire's continued development, expanding the scope of damage. Existing switchgear flame-retardant protection largely relies entirely on electrical control devices for triggering, heavily depending on sensors and control units. Once a fault causes the electrical control circuit to fail, the flame-retardant protection function cannot be activated, and equipment safety under fault conditions cannot be effectively guaranteed.

[0005] Meanwhile, the existing switchgear ventilation structure lacks effective dust prevention and overpressure relief design. Under complex mining conditions, dust can easily enter the cabinet, and the instantaneous high pressure generated by a fault cannot be released in time, posing a risk of cabinet deformation or even explosion. The overall equipment protection reliability is insufficient. Summary of the Invention

[0006] To address the problems mentioned in the background art, the present invention aims to provide an AC high-voltage armored drawer-type intelligent vacuum switchgear, which has the advantages of dynamically adjustable heat dissipation opening, centralized exhaust heat dissipation, airflow blocking under fault conditions, passive oxygen-consuming flame-retardant protection, dustproof and overpressure relief protection. It solves the problems of traditional switchgear where the heat dissipation and ventilation area cannot be dynamically adapted to the load, the heat dissipation efficiency is limited, the continuous supply of external oxygen in fault conditions promotes fire, the flame-retardant protection relies entirely on electrical control and is prone to failure, dust can easily enter the cabinet under complex conditions, and the high voltage cannot be released during a fault.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an AC high-voltage armored drawer-type intelligent vacuum switchgear, comprising an armored cabinet, wherein the armored cabinet has three chambers, which are respectively, from top to bottom, an instrument chamber, a circuit breaker trolley chamber, and a cable chamber. A partition insulating plate is fixedly connected between every two chambers. Heat dissipation vents are symmetrically opened on both sides of each chamber, and an air inlet mechanism is installed inside each vent. Heat exhaust vents are symmetrically opened on the rear sides of the three chambers, and a sealing mechanism is installed inside each exhaust vent. A heat dissipation frame is fixedly connected to the top of the armored cabinet. A heat dissipation channel is symmetrically connected to one side of the heat dissipation frame and is connected to the heat exhaust vent. An exhaust fan is symmetrically installed on the top of the heat dissipation frame and is connected to the heat dissipation channel. A protective grille is installed on the top of the heat dissipation frame. An oxygen-consuming and flame-retardant mechanism is installed on the inner wall of each chamber. A sealing door is hinged to the surface of each chamber. A control unit is provided on the surface of the sealing door, and the control unit is electrically connected to the air inlet mechanism, the sealing mechanism, and the exhaust fan.

[0008] In a preferred embodiment of the present invention, the air intake mechanism includes a mounting frame fitted onto the inner wall of the heat dissipation vent. A plurality of vertically evenly arranged partitions are fixedly connected to the inner wall of the mounting frame. A partition opening is provided at the top of each partition, and a slide bar is slidably connected to the inner wall of the partition opening. A mounting groove is provided on one side of the bottom inner wall of the mounting frame. A forward and reverse motor is installed inside the mounting groove. A rotating column is fixedly connected to the output end of the forward and reverse motor. A threaded block is fixedly connected to the top of the rotating column. A threaded groove is provided at the bottom of the slide bar, and the threaded groove is threadedly connected to the threaded block. A plurality of vertically evenly arranged baffles are provided on the surface of the slide bar, and the spacing between every two baffles is the same as the spacing between every two partitions.

[0009] As a preferred embodiment of the present invention, a sliding column is fixedly connected to the other side of the bottom inner wall of the mounting frame, and the top end of the sliding column is fixedly connected to the mounting frame. The surface of the baffle is provided with a sliding opening, and the sliding opening is slidably connected to the sliding column.

[0010] As a preferred embodiment of the present invention, an embedding groove is provided on the outer side of the mounting frame, an embedding frame is assembled inside the embedding groove, and a dustproof net is fixedly connected to the inner wall of the embedding frame.

[0011] As a preferred embodiment of the present invention, sealing gaskets are fixedly connected to both sides of the surface of the partition strip and the inner wall of the partition opening.

[0012] As a preferred embodiment of the present invention, a temperature and pressure sensor is provided on the inner wall of the chamber, and a pressure relief valve is installed on the surface of the mounting frame.

[0013] As a preferred embodiment of the present invention, the sealing mechanism includes a groove formed at the bottom of the heat exhaust port wall, an electric actuator is fixedly connected to the bottom of the groove, a push plate is fixedly connected to the output end of the electric actuator, and the push plate cooperates with the heat exhaust port sealing mechanism.

[0014] As a preferred embodiment of the present invention, the oxygen-consuming flame-retardant mechanism includes a modular flame-retardant shell installed on the inner wall of the cavity, a storage cavity is provided on the front of the modular flame-retardant shell, the storage cavity is filled with oxygen-consuming flame-retardant filler, and the surface of the storage cavity is covered with a low-temperature melting protective film.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention utilizes an armored cabinet, chambers, insulating partitions, an air intake mechanism, a heat dissipation frame, a heat dissipation channel, an exhaust fan, and a protective grille in a coordinated manner. The chambers are divided into three independent cavities from top to bottom: an instrument cavity, a circuit breaker trolley cavity, and a cable cavity. The air intake mechanism can dynamically adjust the ventilation opening of the heat dissipation vents according to the internal heat generation of the cavities. The exhaust fan, in conjunction with the heat dissipation channel, provides centralized exhaust cooling for each cavity. The protective grille provides external protection for the exhaust fan. This invention solves the problems of traditional switchgear where the heat dissipation opening is not adjustable and the heat dissipation effect does not match the actual load, thus balancing heat dissipation capacity and dustproof performance.

[0016] 2. This invention uses a sealing mechanism, a sealing door, and a control unit to work together. The control unit receives temperature and pressure signals from inside the chamber. In case of a fault, it can drive the sealing mechanism to seal the heat exhaust port, cutting off the air flow between the chamber and the outside, reducing the continuous supply of external oxygen to the faulty chamber, and suppressing the further spread of the fire. The sealing door facilitates the operation of operators to carry out maintenance work on each chamber inside the armored cabinet. The overall heat dissipation and protection are uniformly coordinated and controlled by the control unit, with a high degree of automation.

[0017] 3. This invention utilizes an oxygen-consuming flame-retardant mechanism installed on the inner wall of the chamber. It achieves passive thermal triggering by relying on a low-temperature melting protective film on the surface of the modular flame-retardant shell. When the internal temperature of the chamber rises to the melting threshold due to a fault, the low-temperature melting protective film melts and releases the oxygen-consuming flame-retardant filler in the storage chamber, consuming the free oxygen inside the chamber. At the same time, it releases inert cooling gas to achieve cooling and smoke suppression. This mechanism does not rely on electrical control signals. Even if the control unit, air intake mechanism, or sealing mechanism experiences electrical faults, it can still independently complete flame-retardant protection, significantly improving the operational safety of the switchgear under fault conditions.

[0018] 4. This invention uses a combination of mounting frame, dustproof net, sealing gasket, and pressure relief valve. The dustproof net filters and removes dust from the cooling airflow entering the chamber. The sealing gasket reduces the assembly gap when the heat dissipation vent is closed, preventing dust and moisture from entering the chamber. The pressure relief valve can passively release pressure when the internal pressure of the chamber exceeds the limit, preventing the armored cabinet from deforming under pressure, reducing the risk of insulation components accumulating dust and cabinet bursting. The equipment is easy to maintain and disassemble, and is suitable for complex power distribution conditions in industrial and mining environments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a three-dimensional schematic diagram of the structure of the present invention when the sealing door is opened; Figure 3 This is a partial cross-sectional perspective view of the structure of the present invention; Figure 4 This is a partial cross-sectional schematic diagram of the mounting frame of the present invention; Figure 5 This is an exploded perspective view of the mounting frame, partition strip, slide strip, and stop strip of the present invention. Figure 6 This is a three-dimensional schematic diagram illustrating the combined use of the modular flame-retardant shell and the low-temperature melting protective film of the present invention.

[0020] In the diagram: 1. Armored cabinet; 2. Chamber; 3. Insulating partition board; 4. Heat dissipation frame; 5. Heat dissipation channel; 6. Exhaust fan; 7. Protective grille; 8. Sealed door; 9. Mounting frame; 10. Spacer bar; 11. Partition opening; 12. Sliding bar; 13. Forward and reverse motor; 14. Rotating column; 15. Threaded block; 16. Stop bar; 17. Sliding column; 18. Dustproof net; 19. Sealing gasket; 20. Pressure relief valve; 21. Electric actuator; 22. Push plate; 23. Modular flame-retardant shell; 24. Low-temperature melting protective film. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 6As shown, this invention provides an AC high-voltage armored drawer-type intelligent vacuum switchgear, including an armored cabinet 1. The armored cabinet 1 has three chambers 2 inside, which, from top to bottom, correspond to an instrument chamber, a circuit breaker trolley chamber, and a cable chamber, respectively. A partition insulating plate 3 is fixedly connected between every two chambers 2 to isolate them from each other. Heat dissipation vents are symmetrically opened on both sides of each chamber 2, and an air inlet mechanism is installed inside the vents to introduce cooling airflow into the chamber 2. Heat exhaust vents are symmetrically opened on the rear sides of the three chambers 2, and a sealing mechanism is installed inside the exhaust vents to open or close them. A heat dissipation frame 4 is fixedly connected to the top of the armored cabinet 1, and a heat dissipation channel 5 is symmetrically connected to one side of the heat dissipation frame 4. Furthermore, the heat dissipation channel 5 is connected to the heat exhaust port, collecting and transporting the hot air discharged from each chamber 2; the top of the heat dissipation frame 4 is symmetrically equipped with exhaust fans 6, and the exhaust fans 6 are connected to the heat dissipation channel 5, relying on the exhaust fans 6 to provide exhaust power, accelerating the exhaust of hot air inside the chamber 2 to the outside; the top of the heat dissipation frame 4 is equipped with a protective grille 7, forming an external protection for the exhaust fans 6, preventing foreign objects from entering and damaging the exhaust fans 6; the inner wall of the chamber 2 is equipped with an oxygen-consuming and flame-retardant mechanism, which can automatically achieve oxygen-consuming and flame-retardant protection when the temperature exceeds the fault; the surface of the chamber 2 is hinged with a sealing door 8, and the surface of the sealing door 8 is equipped with a control unit, and the control unit is electrically connected to the air intake mechanism, the sealing mechanism and the exhaust fan 6 respectively, and the control unit uniformly regulates the working status of each component of the heat dissipation system.

[0023] refer to Figure 2 , Figure 4 and Figure 5 The air intake mechanism includes a mounting frame 9 mounted on the inner wall of the heat dissipation vent. Multiple vertically evenly arranged partitions 10 are fixedly connected to the inner wall of the mounting frame 9. A partition opening 11 is provided at the top of each partition 10, and a slide bar 12 is slidably connected to the inner wall of the partition opening 11. A mounting groove is provided on one side of the bottom inner wall of the mounting frame 9. A forward / reverse motor 13 is installed inside the mounting groove. A rotating column 14 is fixedly connected to the output end of the forward / reverse motor 13. A threaded block 15 is fixedly connected to the top of the rotating column 14. A threaded groove is provided at the bottom of the slide bar 12, and the threaded groove is threadedly connected to the threaded block 15. The forward / reverse motor 13 drives the rotating column 14 and the threaded block 15 to rotate, and the slide bar 12 slides vertically via threaded transmission. Several vertically evenly arranged baffles 16 are provided on the surface of the slide bar 12, and the spacing between every two baffles 16 is the same as the spacing between every two partitions 10. The slide bar 12 moves the baffles 16 synchronously, thereby changing the actual ventilation opening of the heat dissipation vent to adapt to different heat dissipation requirements.

[0024] As a technical optimization of the present invention, the overlapping area of ​​the baffle 16 and the partition 10 can be continuously adjusted by the forward and reverse rotation of the forward and reverse motor 13, so as to realize stepless adjustment of the heat dissipation vent opening. Under high load conditions, the ventilation volume is increased to enhance heat dissipation, and under light load conditions, the ventilation volume is reduced to reduce the entry of dust and moisture into the chamber 2.

[0025] refer to Figure 4 A sliding post 17 is fixedly connected to the other side of the bottom inner wall of the mounting frame 9, and the top of the sliding post 17 is fixedly connected to the mounting frame 9. The surface of the stop strip 16 is provided with a sliding opening, and the sliding opening is slidably connected to the sliding post 17. The sliding post 17 guides and prevents the sliding strip 12 from rotating and getting stuck with the threaded block 15, ensuring that the sliding strip 12 only slides in the vertical direction.

[0026] As a technical optimization of the present invention, the sliding joints of the slide bar 17 and the stop bar 16 cooperate with each other to counteract the torsional torque generated by the rotation of the threaded block 15, improve the smoothness of the slide bar 12 operation, and reduce the probability of mechanism jamming failure.

[0027] refer to Figure 1 and Figure 5 An embedding groove is provided on the outer side of the mounting frame 9, and an embedding frame is installed inside the embedding groove. A dustproof net 18 is fixedly connected to the inner wall of the embedding frame. The dustproof net 18 can filter dust and impurities in the air entering the chamber 2. The embedding frame can be directly disassembled and installed, which is convenient for the later cleaning and maintenance of the dustproof net 18.

[0028] As a technical optimization of the present invention, the dustproof net 18 can be disassembled, cleaned and replaced without disassembling the mounting frame 9 through the plug-in assembly structure of the embedded frame and the embedded slot, simplifying on-site maintenance operations.

[0029] refer to Figure 5 Sealing gaskets 19 are fixedly connected to both sides of the surface of the partition strip 10 and the inner wall of the partition opening 11. When the heat dissipation opening is in the fully closed position, the sealing gaskets 19 fill the assembly gap, improve the sealing effect after the heat dissipation opening is closed, and reduce dust and moisture infiltration into the cavity 2.

[0030] As a technical optimization of the present invention, by filling the gaps between each moving pair with the sealing gasket 19, the heat dissipation vent can effectively block the intrusion of external moisture and dust when it is fully closed, thus protecting the internal insulating components of the chamber 2.

[0031] refer to Figure 3 Temperature and pressure sensors are installed on the inner wall of chamber 2, and pressure relief valve 20 is installed on the surface of mounting frame 9. The temperature and pressure sensors collect the temperature and pressure data inside chamber 2 in real time and feed them back to the control unit. Pressure relief valve 20 automatically opens to relieve pressure when the pressure inside chamber 2 rises abnormally, preventing the cabinet from being deformed and damaged by pressure.

[0032] As a technical optimization of the present invention, the operating parameters of each chamber 2 are monitored in real time by temperature and pressure sensors, providing a basis for the control unit to adjust the heat dissipation opening and trigger fault protection. As a passive safety component, the pressure relief valve 20 can still achieve overpressure relief protection when the electrical control fails.

[0033] refer to Figure 2 and Figure 3 The sealing mechanism includes a groove at the bottom of the heat exhaust port wall. An electric actuator 21 is fixedly connected to the bottom of the groove. A push plate 22 is fixedly connected to the output end of the electric actuator 21. The push plate 22 cooperates with the heat exhaust port sealing mechanism. The control unit controls the extension and retraction of the electric actuator 21, which drives the push plate 22 to complete the opening and closing of the heat exhaust port. In case of failure, the heat exhaust port is closed to reduce the continuous entry of outside air into the chamber 2.

[0034] As a technical optimization of the present invention, the heat exhaust port is blocked by the push plate 22 driven by the electric thruster 21. When a fault occurs, the gas flow between the chamber 2 and the outside is cut off, the oxygen supply is reduced, and the mechanism works in conjunction with the oxygen-consuming flame-retardant mechanism to suppress the development of internal electric arc and fire.

[0035] refer to Figure 6 The oxygen-consuming flame-retardant mechanism includes a modular flame-retardant shell 23 installed on the inner wall of chamber 2. A storage cavity is opened on the front of the modular flame-retardant shell 23, and the interior of the storage cavity is filled with oxygen-consuming flame-retardant filler. A low-temperature melting protective film 24 is attached to the surface of the storage cavity. The oxygen-consuming flame-retardant filler is made of composite inorganic oxygen-consuming particles, mainly composed of magnesium hydroxide, ultrafine reduced iron powder, and diatomaceous earth flame-retardant powder. The particles are loose and porous, and after overflowing, they can quickly react with oxygen in the air to consume free oxygen. Simultaneously, they decompose upon heating to release inert cooling gas. It has the dual effects of oxygen consumption and flame retardancy, as well as cooling and smoke suppression; the low-temperature melting protective film 24 is made of polyethylene low-temperature hot melt film material, with a uniform melting threshold of 85℃. When the temperature is below the threshold, the film is completely sealed and completely covers the storage cavity, preventing the filler from getting damp, failing, or spilling; when the temperature is above the threshold, it melts and liquefies rapidly, opening the material outlet channel of the storage cavity; when the internal temperature of the cavity 2 reaches 85℃, the low-temperature melting protective film 24 melts, and the oxygen consumption and flame retardant filler overflows and consumes the oxygen inside the cavity 2, suppressing the spread of fire. This mechanism is passively triggered and can still work normally even if the electrical control fails.

[0036] As a technical optimization of the present invention, passive triggering is achieved through the thermal melting characteristics of the low-temperature melting protective film 24, without relying on sensor or control unit signals. Even if the switch cabinet electrical control circuit is damaged, the modular flame-retardant shell 23 can still autonomously complete the release of material to consume oxygen and retard flame, further improving the safety of equipment failure conditions.

[0037] The working principle and usage process of this invention are as follows: During actual operation, the temperature and pressure sensors on the inner wall of chamber 2 collect real-time temperature and pressure signals from the instrument compartment, circuit breaker trolley compartment, and cable compartment inside the armored cabinet 1 and transmit them to the control unit on the sealing door 8. The control unit controls the forward and reverse motor 13 to rotate in both directions based on the received temperature signals. The forward and reverse motor 13 drives the rotating column 14 and the threaded block 15 to rotate. The threaded block 15 drives the slide bar 12 to slide vertically inside the partition opening 11 of the spacer bar 10 through threaded transmission. The slide bar 12 drives the stop bar 16 to move synchronously. The column 17 is mounted on the mounting frame 9 and slides with the sliding opening of the baffle 16 to guide and prevent rotation of the slide bar 12. The overlap area between the baffle 16 and the partition 10 changes to adjust the ventilation opening of the heat dissipation vent inside the mounting frame 9. The sealing gasket 19 fixed on the partition 10 and the partition opening 11 fills the movement gap to achieve sealing when the heat dissipation vent is closed. Outside air passes through the dustproof net 18 embedded on the outside of the mounting frame 9 to filter dust and impurities before entering each chamber 2 to complete heat exchange. The hot air after heat exchange flows into the heat dissipation channel 5 through the heat exhaust port. The exhaust fan 6 operates to provide ventilation power to expel hot air from inside the heat dissipation channel 5. The protective grille 7 on top of the heat dissipation frame 4 protects the exhaust fan 6 and prevents foreign objects from entering. When the temperature and pressure sensor detects an over-temperature or over-pressure condition inside the chamber 2, the control unit issues a command to extend the electric thruster 21. The electric thruster 21 pushes the push plate 22 to move and block the heat exhaust port, cutting off the airflow path between the chamber 2 and the outside. At the same time, if the internal temperature of the chamber 2 rises to 85°C, the low-temperature melting protective film 24 on the surface of the modular flame-retardant shell 23 installed on the inner wall of the chamber 2 will melt. When heated and liquefied, the oxygen-consuming and flame-retardant packing inside the storage chamber overflows. The oxygen-consuming and flame-retardant packing consumes free oxygen inside chamber 2 and releases inert cooling gas to achieve oxygen consumption, flame retardancy, cooling and smoke suppression. When the pressure inside chamber 2 exceeds the safety threshold sharply, the pressure relief valve 20 mounted on the surface of the mounting frame 9 is passively opened to release the high pressure inside chamber 2, preventing the armored cabinet 1 from being deformed and damaged by pressure. During equipment maintenance, the operator can open the sealing door 8 to carry out maintenance on the components inside chamber 2. The embedded frame can also be removed from the embedded slot of the mounting frame 9 to clean or replace the dustproof net 18.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An AC high-voltage armored drawer-type intelligent vacuum switchgear, comprising an armored cabinet (1), characterized in that: The armored cabinet (1) has three chambers (2) inside, which correspond to the instrument room, circuit breaker truck room and cable room from top to bottom, respectively. A partition insulation plate (3) is fixedly connected between every two chambers (2). Heat dissipation vents are symmetrically opened on both sides of each chamber (2), and an air intake mechanism is installed inside each heat dissipation vent. Heat exhaust vents are symmetrically opened on the rear side of each of the three chambers (2), and a sealing mechanism is installed inside each heat exhaust vent. A heat dissipation frame (4) is fixedly connected to the top of the armored cabinet (1). A heat dissipation channel (5) is symmetrically connected to one side of the heat dissipation frame (4), and the heat dissipation channel (5) is connected to the heat exhaust port. An exhaust fan (6) is symmetrically installed on the top of the heat dissipation frame (4), and the exhaust fan (6) is connected to the heat dissipation channel (5). A protective grille (7) is installed on the top of the heat dissipation frame (4). An oxygen-consuming flame-retardant mechanism is installed on the inner wall of the chamber (2). A sealing door (8) is hinged to the surface of the chamber (2). A control unit is provided on the surface of the sealing door (8), and the control unit is electrically connected to the air intake mechanism, the sealing mechanism and the exhaust fan (6) respectively.

2. The AC high-voltage armored drawer-type intelligent vacuum switchgear according to claim 1, characterized in that: The air intake mechanism includes a mounting frame (9) assembled on the inner wall of the heat dissipation port. The inner wall of the mounting frame (9) is fixedly connected with a plurality of vertically uniformly arrayed partitions (10). The top of the partitions (10) is provided with a partition opening (11). The inner wall of the partition opening (11) is slidably connected with a slide bar (12). The bottom inner wall of the mounting frame (9) is provided with a mounting groove. A forward and reverse motor (13) is installed inside the mounting groove. The output end of the forward and reverse motor (13) is fixedly connected with a rotating column (14). The top of the rotating column (14) is fixedly connected with a threaded block (15). The bottom of the slide bar (12) is provided with a threaded groove, and the threaded groove is threadedly connected to the threaded block (15). The surface of the slide bar (12) is provided with a plurality of vertically uniformly arrayed baffles (16), and the spacing between every two baffles (16) is the same as the spacing between every two partitions (10).

3. The AC high-voltage armored drawer-type intelligent vacuum switchgear according to claim 2, characterized in that: A sliding column (17) is fixedly connected to the other side of the bottom inner wall of the mounting frame (9), and the top of the sliding column (17) is fixedly connected to the mounting frame (9). The surface of the baffle (16) is provided with a sliding opening, and the sliding opening is slidably connected to the sliding column (17).

4. The AC high-voltage armored drawer-type intelligent vacuum switchgear according to claim 3, characterized in that: An embedding groove is provided on the outer side of the mounting frame (9), and an embedding frame is assembled inside the embedding groove. A dustproof net (18) is fixedly connected to the inner wall of the embedding frame.

5. The AC high-voltage armored drawer-type intelligent vacuum switchgear according to claim 4, characterized in that: Sealing gaskets (19) are fixedly connected to both sides of the surface of the spacer (10) and the inner wall of the partition (11).

6. The AC high-voltage armored drawer-type intelligent vacuum switchgear according to claim 5, characterized in that: The inner wall of the chamber (2) is provided with a temperature and pressure sensor, and the surface of the mounting frame (9) is provided with a pressure relief valve (20).

7. The AC high-voltage armored drawer-type intelligent vacuum switchgear according to claim 6, characterized in that: The sealing mechanism includes a groove formed at the bottom of the heat exhaust port wall, an electric actuator (21) is fixedly connected to the bottom of the groove, a push plate (22) is fixedly connected to the output end of the electric actuator (21), and the push plate (22) cooperates with the heat exhaust port sealing mechanism.

8. The AC high-voltage armored drawer-type intelligent vacuum switchgear according to claim 7, characterized in that: The oxygen-consuming flame-retardant mechanism includes a modular flame-retardant shell (23) installed on the inner wall of the chamber (2). The front of the modular flame-retardant shell (23) is provided with a storage cavity. The storage cavity is filled with oxygen-consuming flame-retardant filler. The surface of the storage cavity is covered with a low-temperature melting protective film (24).

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