Real-time monitoring device for operation state of medium and low voltage switch cabinet

Abstract

The application discloses to the technical field of low-voltage switch cabinet monitoring, specifically for a real-time monitoring device for the operating state of a low-voltage switch cabinet, comprising a switch cabinet body, the front side of the switch cabinet body is open, a cabinet door is hinged to the opening of the switch cabinet body through a hinge, the inner side of the cabinet door is fixedly connected with a lifting support seat and a connecting seat, a lifting transmission mechanism is installed on the lifting support seat, a monitoring camera device and a suction connector are installed on the lifting transmission mechanism, and the suction connector is fixedly connected with a monitoring pipeline at one end. The beneficial effects of the application are as follows: when the switch cabinet body is in normal use, the suction of the suction connector is started, at which time the suction connector removes the heat emitted by the internal components of the switch cabinet body; meanwhile, the lifting transmission mechanism drives the monitoring camera device and the suction connector to move up and down reciprocally, so that the monitoring camera device can comprehensively monitor the interior of the switch cabinet body.

Description

Technical Field

[0001] This invention relates to the field of medium and low voltage switchgear monitoring technology, specifically to a device for real-time monitoring of the operating status of medium and low voltage switchgear. Background Technology

[0002] A switchgear is an electrical device. External power lines first enter the main control switch inside the cabinet, then proceed to the branch control switches, with each branch circuit configured according to its needs. The main function of a switchgear is to open, close, control, and protect electrical equipment during the power generation, transmission, distribution, and energy conversion processes of a power system. Switchgear can be classified in many ways. For example, based on the circuit breaker installation method, it can be divided into withdrawable switchgear and fixed switchgear; or according to the cabinet structure, it can be divided into open switchgear, metal-enclosed switchgear, and metal-enclosed armored switchgear; and according to different voltage levels, it can be divided into high-voltage switchgear, medium-voltage switchgear, and low-voltage switchgear, etc.

[0003] Traditional medium and low voltage switchgear typically only provides basic switching and protection functions, making it difficult to achieve comprehensive monitoring and intelligent management of the power system. While some switchgear systems have incorporated monitoring devices, these devices are often limited to a single function and have poor monitoring capabilities. They are unable to provide adequate relief in emergencies, especially when a fire occurs inside the switchgear or equipment cabinet. If a detector detects a fire source, it may initiate large-scale fire suppression operations within the equipment room, interfering with or damaging other unburned equipment and causing unnecessary losses. Summary of the Invention

[0004] The purpose of this invention is to provide a device for real-time monitoring of the operating status of medium and low voltage switchgear, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a real-time monitoring device for the operating status of medium and low voltage switchgear, comprising a switchgear body, the front side of which is open, a cabinet door hinged to the opening of the switchgear body, a lifting support base and a connecting base fixedly connected to the inner side of the cabinet door, a lifting transmission mechanism mounted on the lifting support base, a monitoring camera and an air intake connector mounted on the lifting transmission mechanism, a monitoring pipe fixedly connected to one end of the air intake connector, a temperature sensor and a smoke alarm symmetrically fixedly mounted on the side of the monitoring pipe, a lifting hose fixedly mounted at the end of the monitoring pipe away from the air intake connector, and a connecting base fixedly inserted at the end of the lifting hose away from the monitoring pipe, the connecting base having a lifting groove on its inner side, an external hose fixedly inserted at the side of the connecting base away from the lifting hose, one end of the external hose passing through the side wall of the switchgear body and connected to one end of a tee joint via a pipe connector, the other two ends of the tee joint being connected to an air blower and an air extractor via connecting pipes respectively, and control valves installed at the connection points between the two ends of the tee joint and the connecting pipes.

[0006] As a further embodiment of the present invention, the side of the lifting support base is provided with a through groove, and the side of the lifting support base is provided with T-shaped grooves symmetrically on both sides of the through groove, with the T-shaped grooves distributed from top to bottom.

[0007] The lifting transmission mechanism includes a reciprocating screw rotatably connected in a through groove, a lifting slider sleeved on the reciprocating screw, a lifting platform fixedly installed on the side of the lifting slider, and T-shaped sliders symmetrically fixedly connected to one side of the lifting platform.

[0008] As a further embodiment of the present invention, the reciprocating screw is driven by the motor shaft of the stepper motor fixedly installed at the lower end of the lifting support base, and the reciprocating screw is threadedly connected to the lifting slider.

[0009] As a further embodiment of the present invention, the T-shaped slider matches the T-shaped groove, and the two T-shaped sliders are symmetrically distributed on both sides of the lifting slider, and the T-shaped sliders and the T-shaped groove are slidably connected vertically.

[0010] As a further embodiment of the present invention, a fire extinguishing mechanism is installed in the lifting groove inside the connecting seat. The fire extinguishing mechanism includes an electric telescopic rod fixedly installed on the upper end of the connecting seat. The lower end of the electric telescopic rod extends downward into the lifting groove and is fixedly connected to the upper end of the storage tank. The inner cavity of the storage tank is filled with dry powder fire extinguishing agent. A vent seat is fixedly installed on the lower end of the storage tank. A circular groove is opened on the inner side of the vent seat. A discharge port is opened through the upper end of the circular groove. Ventilation holes are symmetrically opened on the left and right sides of the inner side of the vent seat. A rotating material guiding mechanism is installed inside the storage tank.

[0011] As a further embodiment of the present invention, the lower end of the storage tank is inserted through the discharge port, and the vent seat is slidably connected to the inner side wall of the lifting groove.

[0012] As a further embodiment of the present invention, the lower end of the storage tank is open, the lower end of the inner cavity of the storage tank is conical, and the inner cavity of the storage tank is connected to the inner cavity of the circular groove.

[0013] As a further embodiment of the present invention, the rotating material guiding mechanism includes a rotating shaft rotatably connected to the inner cavity of the storage tank. The rotating shaft is rotatably connected to the upper end of the inner cavity of the storage tank, and the lower end of the rotating shaft extends downward into a circular groove. A spiral plate is fixedly sleeved on the rotating shaft, and multiple blades are fixedly connected to the lower end of the rotating shaft in a ring array.

[0014] As a further embodiment of the present invention, the spiral plate is distributed at the lower end of the inner cavity of the storage tank, and the blade is disposed in the circular groove.

[0015] The beneficial effects of this invention are:

[0016] 1. When the switchgear is in normal use, the exhaust fan is started. At this time, the suction connector removes the heat emitted by the internal components of the switchgear. Simultaneously, the lifting transmission mechanism drives the monitoring camera and the suction connector to move up and down, allowing the monitoring camera to comprehensively monitor the interior of the switchgear. The up-and-down movement of the suction connector effectively dissipates heat from the internal components of the switchgear. As heat flows through the monitoring pipe, it is detected by the temperature sensor installed at the upper end of the monitoring pipe, thereby monitoring the internal temperature of the switchgear in real time. This allows for effective heat dissipation while monitoring the internal temperature of the switchgear.

[0017] 2. When a fire occurs inside the switchgear, the smoke will be drawn away by the suction connector, and the smoke will flow through the monitoring pipe, triggering the smoke alarm. The smoke alarm sends the fire information to the controller, which then controls the inner rod of the electric telescopic rod to extend downwards, causing the fire extinguishing mechanism to move downwards. The blower introduces air into the connecting pipe, and the air simultaneously drives the rotating material guide mechanism to rotate, sending the dry powder extinguishing agent in the storage tank downwards into the circular trough. As the airflow passes through the circular trough, it carries the dry powder extinguishing agent, which is then sprayed out from the suction connector, thus spraying the dry powder extinguishing agent into the switchgear for fire extinguishing. At the same time, the lifting transmission mechanism moves the suction connector up and down, ensuring that the dry powder extinguishing agent is effectively sprayed into the switchgear, directly onto the fire source for effective fire extinguishing. It can also be sprayed onto other components, acting as a flame retardant and preventing further fire spread. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural view of the real-time monitoring device for the operating status of low-voltage switchgear in this invention;

[0019] Figure 2 This is a cross-sectional view of the low-voltage switchgear real-time monitoring device in this invention.

[0020] Figure 3 This is a partial cross-sectional view of the real-time monitoring device for the operating status of low-voltage switchgear in this invention;

[0021] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B;

[0023] Figure 6 This is a cross-sectional view of the lifting support structure of the present invention;

[0024] Figure 7 This is an exploded view of the lifting support base, lifting transmission mechanism, monitoring camera device, and air intake connector of the present invention;

[0025] Figure 8 This is an exploded view of the connecting seat and fire extinguishing mechanism of the present invention.

[0026] In the diagram: 1. Switch cabinet body; 11. Cabinet door; 2. Lifting support base; 21. Through slot; 22. T-slot; 3. Reciprocating screw; 31. Lifting slider; 32. Lifting platform; 33. T-slot; 4. Monitoring camera device; 5. Suction connector; 51. Monitoring pipe; 52. Temperature sensor; 53. Lifting hose; 54. Smoke alarm; 6. Connecting seat; 61. Lifting slot; 62. External hose; 7. T-connector; 71. Control valve; 72. Air blower; 73. Air extractor; 8. Electric telescopic rod; 81. Storage tank; 82. Vent seat; 83. Circular slot; 84. Discharge port; 85. Vent hole; 9. Rotating shaft; 91. Spiral plate; 92. Blade. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1 to 8This invention provides a technical solution: a real-time monitoring device for the operating status of medium and low voltage switchgear, comprising a switchgear body 1, the front side of which is open, and a cabinet door 11 is hinged to the opening of the switchgear body 1. A lifting support 2 and a connecting seat 6 are fixedly connected to the inner side of the cabinet door 11. A lifting transmission mechanism is installed on the lifting support 2, and a monitoring camera 4 and an air intake jack 5 are installed on the lifting transmission mechanism. A monitoring pipe 51 is fixedly connected to one end of the air intake jack 5. A temperature sensor 52 and a smoke alarm 54 are symmetrically fixedly installed on the upper and lower sides of the monitoring pipe 51. The lower end of the temperature sensor 52 extends downward into the inner cavity of the monitoring pipe 51, and the detection head of the smoke alarm 54 extends upward into the inner cavity of the monitoring pipe 51. A lifting hose 53 is fixedly installed at the end of the monitoring pipe 51 away from the air intake jack 5. One end of the lifting hose 53 is fixedly connected to the monitoring pipe 51 by a thread. The lifting hose 53 is connected to the suction connector 5 through the monitoring pipe 51. The end of the lifting hose 53 away from the monitoring pipe 51 is fixedly inserted into the side of the connecting seat 6. The inner side of the connecting seat 6 is provided with a lifting groove 61. An external hose 62 is fixedly inserted into the side of the connecting seat 6 away from the lifting hose 53. One end of both the lifting hose 53 and the external hose 62 are inserted through the interior of the connecting seat 6, and both the lifting hose 53 and the external hose 62 are connected to the inner cavity of the lifting groove 61. One end of the external hose 62 passes through the side wall of the switch cabinet body 1 and is connected to one end of the three-way connector 7 through a pipe joint. The other two ends of the three-way connector 7 are respectively connected to the air blower 72 and the air extractor 73 through connecting pipes. Control valves 71 are installed at the connection points of the two ends of the three-way connector 7 and the connecting pipes.

[0029] A filter screen is installed at the top of the switch cabinet body 1. The end of the external flexible hose 62 inside the switch cabinet body 1 is bent, so that the cabinet door 11 on the side of the switch cabinet body 1 can be opened and closed normally, and the external flexible hose 62 can transmit air normally.

[0030] Please see Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 The side of the lifting support 2 is provided with a through groove 21, and the side of the lifting support 2 is provided with T-shaped grooves 22 symmetrically on both sides of the through groove 21. The T-shaped grooves 22 are distributed from top to bottom.

[0031] The lifting transmission mechanism includes a reciprocating screw 3 rotatably connected in the through groove 21, a lifting slider 31 sleeved on the reciprocating screw 3, a lifting platform 32 fixedly installed on the side of the lifting slider 31, and a T-shaped slider 33 symmetrically fixedly connected to one side of the lifting platform 32.

[0032] The reciprocating screw 3 is driven by the motor shaft of the stepper motor fixedly installed at the lower end of the lifting support 2. The reciprocating screw 3 is threadedly connected to the lifting slider 31. The motor shaft of the stepper motor drives the reciprocating screw 3 to rotate, and when the reciprocating screw 3 rotates, the lifting slider 31 moves up and down reciprocally.

[0033] The T-shaped slider 33 matches the T-shaped groove 22. Two T-shaped sliders 33 are symmetrically distributed on both sides of the lifting slider 31, and the T-shaped sliders 33 and the T-shaped groove 22 are slidably connected vertically. When the lifting slider 31 moves up and down, it drives the lifting platform 32 to move up and down. When the lifting platform 32 moves up and down, it drives the T-shaped sliders 33 to slide up and down along the T-shaped groove 22, so that the lifting platform 32 can move up and down stably.

[0034] As the lifting platform 32 moves up and down, it also drives the monitoring camera device 4 and the air intake connector 5 to move up and down, enabling the monitoring camera device 4 to comprehensively monitor the interior of the switch cabinet body 1.

[0035] When the air intake connector 5 moves up and down, it drives one end of the lifting hose 53 to move up and down through the monitoring pipe 51. The lifting hose 53 does not obstruct the up and down movement of the air intake connector 5. The monitoring pipe 51 is connected to the inner side of the lifting groove 61 of the connecting seat 6 through the lifting hose 53.

[0036] The air extractor 73 performs air extraction operation and the blower 72 is turned off. At this time, the air intake connector 5 extracts the heat emitted by the internal components of the switch cabinet body 1. The heat flows through the air intake connector 5, through the monitoring pipe 51, the lifting hose 53, the connecting seat 6, the external hose 62, the tee connector 7, and the connecting pipe, and is finally extracted by the air extractor 73.

[0037] At the same time, the lifting transmission mechanism drives the air intake joint 5 to move up and down repeatedly, thereby enabling good heat dissipation of the components inside the switch cabinet body 1.

[0038] When heat flows through the monitoring pipe 51, it is detected by the temperature sensor 52 installed at the upper end of the monitoring pipe 51, thereby monitoring the temperature inside the switch cabinet body 1 in real time.

[0039] Please see Figures 3 to 5 , Figure 8A fire extinguishing mechanism is installed in the lifting groove 61 inside the connecting seat 6. The fire extinguishing mechanism includes an electric telescopic rod 8 fixedly installed on the upper end of the connecting seat 6. The lower end of the electric telescopic rod 8 extends downward into the lifting groove 61 and is fixedly connected to the upper end of the storage tank 81. The inner cavity of the storage tank 81 is filled with dry powder fire extinguishing agent. A vent seat 82 is fixedly installed at the lower end of the storage tank 81. A circular groove 83 is opened on the inner side of the vent seat 82. A discharge port 84 is opened upward through the upper end of the circular groove 83. Ventilation holes 85 are symmetrically opened on the left and right sides of the inner side of the vent seat 82. The ventilation holes 85 penetrate the left and right side walls of the vent seat 82. When the vent seat 82 moves downward to the bottom of the lifting groove 61, one end of the lifting hose 53 and one end of the external hose 62 are respectively connected to the two ventilation holes 85.

[0040] When firefighting operations are not required, the piston rod of the electric telescopic rod 8 is in the retracted state, that is, the vent seat 82 does not contact the bottom of the lifting groove 61, and the vent holes 85 on both sides of the vent seat 82 contact the inner side wall of the lifting groove 61, thereby sealing the vent holes 85 on both sides of the vent seat 82 to prevent dry powder extinguishing agent from falling; a rotating material guiding mechanism is installed inside the storage tank 81.

[0041] When the equipment is operating normally and no fire occurs, the airflow for heat dissipation passes through the bottom of the lifting groove 61, that is, it flows under the vent seat 82, and does not flow through the vent seat 82.

[0042] The lower end of the storage tank 81 is inserted into the discharge port 84, and the vent seat 82 is slidably connected to the inner side wall of the lifting groove 61.

[0043] The lower end of the storage tank 81 is open, and the lower end of the inner cavity of the storage tank 81 is conical. The inner cavity of the storage tank 81 is connected to the inner cavity of the circular groove 83, which facilitates the downward fall of the dry powder extinguishing agent.

[0044] The rotary material guiding mechanism includes a rotating shaft 9 rotatably connected to the inner cavity of the storage tank 81. The rotating shaft 9 is rotatably connected to the upper end of the inner cavity of the storage tank 81. The lower end of the rotating shaft 9 extends downward into the circular groove 83. The lower end of the rotating shaft 9 is rotatably connected to the bottom of the circular groove 83. A spiral plate 91 is fixedly sleeved on the rotating shaft 9. Multiple blades 92 are fixedly connected to the lower end of the rotating shaft 9 in a ring array.

[0045] Spiral plates 91 are distributed at the lower end of the inner cavity of storage tank 81, and blades 92 are set in circular grooves 83.

[0046] A controller is installed on the side of the switch cabinet body 1 or inside the machine room. The controller is electrically connected to the stepper motor, monitoring camera 4, temperature sensor 52, smoke alarm 54, air blower 72, exhaust fan 73, and electric telescopic rod 8. The controller can directly control the start and stop of the stepper motor, air blower 72, exhaust fan 73, and electric telescopic rod 8. The monitoring camera 4 transmits the situation inside the switch cabinet body 1 to the controller in real time. At the same time, the temperature sensor 52 and smoke alarm 54 can monitor the situation inside the switch cabinet body 1 in real time.

[0047] When a fire occurs inside the switch cabinet body 1, the smoke will be drawn away by the suction connector 5. At this time, the smoke will flow through the monitoring pipe 51, thereby triggering the smoke alarm 54. The smoke alarm 54 sends the fire situation to the controller, and the controller controls the inner rod of the electric telescopic rod 8 to extend downward.

[0048] Slide the storage tank 81 and the vent seat 82 down along the lifting groove 61 to its bottom, so that the lifting hose 53 and the external hose 62 are connected to the two vent holes 85 on both sides of the vent seat 82 respectively. At the same time, stop the air pump 73 and start the air blower 72.

[0049] Air is introduced into the air blower 72 through the connecting pipes. The air is blown into the circular groove 83 of the air seat 82 along the three-way connector 7, the external hose 62, and the air vent 85. Then it flows out along the air vent 85 on the other side of the circular groove 83, passes through the lifting hose 53, the monitoring pipe 51, and the air intake connector 5, and finally blows out along the open end of the air intake connector 5.

[0050] When the wind blows through the circular trough 83, the dry powder extinguishing agent in the inner cavity of the storage tank 81 falls downward into the circular trough 83. At the same time, the wind pushes the blade 92 to rotate, the blade 92 drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the spiral plate 91 to rotate. The spiral plate 91 delivers the dry powder extinguishing agent in the storage tank 81 downward into the circular trough 83, while preventing the dry powder extinguishing agent from accumulating at the opening at the lower end of the storage tank 81, ensuring that the dry powder extinguishing agent can continuously fall into the circular trough 83.

[0051] At this time, when the airflow passes through the circular groove 83, it will carry the dry powder fire extinguishing agent to flow at the same time. As a result, the dry powder fire extinguishing agent is sprayed out from the air intake joint 5 with the wind, thereby spraying the dry powder fire extinguishing agent into the switch cabinet body 1 for fire extinguishing operation.

[0052] At the same time, the lifting transmission mechanism drives the air intake 5 to move up and down, so that the dry powder extinguishing agent can be sprayed into the switch cabinet body 1, and the dry powder can be sprayed directly at the fire source for effective fire extinguishing. It can also be sprayed on other components to play a flame-retardant role and prevent the fire from spreading further.

[0053] Working principle: When the switch cabinet body 1 is in normal use, the air extractor 73 is started. At this time, the air intake connector 5 draws away the heat emitted by the internal components of the switch cabinet body 1. The heat flows through the air intake connector 5, through the monitoring pipe 51, the lifting hose 53, the connecting seat 6, the external hose 62, the tee connector 7, and the connecting pipe, and is finally drawn away by the air extractor 73.

[0054] At the same time, the lifting transmission mechanism operates, and the reciprocating screw 3 is driven to rotate through the motor shaft of the stepper motor. When the reciprocating screw 3 rotates, the lifting slider 31 moves up and down back and forth. The lifting slider 31 drives the lifting platform 32 to move up and down back and forth. The lifting platform 32 drives the monitoring camera 4 and the air intake 5 to move up and down back and forth, so that the monitoring camera 4 can comprehensively monitor the interior of the switch cabinet body 1.

[0055] When the air intake joint 5 moves up and down, it can effectively dissipate heat from all the components inside the switch cabinet body 1.

[0056] When heat flows through the monitoring pipe 51, it is detected by the temperature sensor 52 installed at the upper end of the monitoring pipe 51, thereby monitoring the temperature inside the switch cabinet body 1 in real time. While monitoring the temperature inside the switch cabinet body 1, heat dissipation can be effectively carried out.

[0057] When a fire occurs inside the switch cabinet body 1, the smoke will be drawn away by the suction connector 5 and the smoke will flow through the monitoring pipe 51, thereby triggering the smoke alarm 54. The smoke alarm 54 sends the fire situation to the controller, and the controller controls the inner rod of the electric telescopic rod 8 to extend downward.

[0058] The inner rod of the electric telescopic rod 8 pushes the storage tank 81 and the vent seat 82 to slide down the lifting groove 61 to its bottom. At this time, the lifting hose 53 and the external hose 62 are connected to the two vent holes 85 on both sides of the vent seat 82, and at the same time, the air pump 73 stops running and the air blower 72 is started.

[0059] Air is introduced into the air blower 72 through the connecting pipes. The air is blown into the circular groove 83 of the air seat 82 along the three-way connector 7, the external hose 62, and the air vent 85. Then it flows out along the air vent 85 on the other side of the circular groove 83, passes through the lifting hose 53, the monitoring pipe 51, and the air intake connector 5, and finally blows out along the open end of the air intake connector 5.

[0060] At the same time, the wind drives the blade 92 to rotate, the blade 92 drives the shaft 9 to rotate, the shaft 9 drives the spiral plate 91 to rotate, and the spiral plate 91 delivers the dry powder extinguishing agent in the storage tank 81 downward to the circular groove 83 through the spiral plate 91, while preventing the dry powder extinguishing agent from accumulating at the opening at the lower end of the storage tank 81, and ensuring that the dry powder extinguishing agent can continuously fall into the circular groove 83.

[0061] At this time, when the airflow passes through the circular groove 83, it will carry the dry powder fire extinguishing agent to flow at the same time. As a result, the dry powder fire extinguishing agent is sprayed out from the air intake joint 5 with the wind, thereby spraying the dry powder fire extinguishing agent into the switch cabinet body 1 for fire extinguishing operation.

[0062] At the same time, the lifting transmission mechanism drives the air intake 5 to move up and down, so that the dry powder extinguishing agent can be sprayed into the switch cabinet body 1, and the dry powder can be sprayed directly at the fire source for effective fire extinguishing. It can also be sprayed on other components to play a flame-retardant role and prevent the fire from spreading further.

Claims

1. A device for real-time monitoring of the operating status of medium and low voltage switchgear, comprising a switchgear body (1), wherein the front side of the switchgear body (1) is open, and a cabinet door (11) is hinged to the opening of the switchgear body (1) via a hinge, characterized in that: The inner side of the cabinet door (11) is fixedly connected to a lifting support base (2) and a connecting base (6). A lifting transmission mechanism is installed on the lifting support base (2). A monitoring camera (4) and an air intake connector (5) are installed on the lifting transmission mechanism. A monitoring pipe (51) is fixedly connected to one end of the air intake connector (5). A temperature sensor (52) and a smoke alarm (54) are symmetrically fixedly installed on the side of the monitoring pipe (51). A lifting hose (53) is fixedly installed at the end of the monitoring pipe (51) away from the air intake connector (5). The lifting hose (53) is far from the end of the monitoring pipe (51) away from the air intake connector (5). One end of the monitoring pipe (51) is fixedly inserted into the side of the connecting seat (6). The inner side of the connecting seat (6) is provided with a lifting groove (61). An external hose (62) is fixedly inserted into the side of the connecting seat (6) away from the lifting hose (53). One end of the external hose (62) passes through the side wall of the switch cabinet body (1) and is connected to one end of the three-way connector (7) through a pipe joint. The other two ends of the three-way connector (7) are respectively connected to an air blower (72) and an air extractor (73) through connecting pipes. Control valves (71) are installed at the connection points between the two ends of the three-way connector (7) and the connecting pipes. A fire extinguishing mechanism is installed in the lifting groove (61) inside the connecting seat (6). The fire extinguishing mechanism includes an electric telescopic rod (8) fixedly installed on the upper end of the connecting seat (6). The lower end of the electric telescopic rod (8) extends downward into the lifting groove (61) and is fixedly connected to the upper end of the storage tank (81). The inner cavity of the storage tank (81) is filled with dry powder fire extinguishing agent. A vent seat (82) is fixedly installed on the lower end of the storage tank (81). A circular groove (83) is opened on the inner side of the vent seat (82). A discharge port (84) is opened through the upper end of the circular groove (83). Ventilation holes (85) are symmetrically opened on the left and right sides of the inner side of the vent seat (82). A rotating material guiding mechanism is installed inside the storage tank (81).

2. The real-time monitoring device for the operating status of medium and low voltage switchgear according to claim 1, characterized in that: The side of the lifting support base (2) is provided with a through groove (21), and the side of the lifting support base (2) is provided with T-shaped grooves (22) symmetrically on both sides of the through groove (21), and the T-shaped grooves (22) are distributed from top to bottom; The lifting transmission mechanism includes a reciprocating screw (3) rotatably connected in a through groove (21), a lifting slider (31) sleeved on the reciprocating screw (3), a lifting platform (32) fixedly installed on the side of the lifting slider (31), and a T-shaped slider (33) symmetrically fixedly connected on one side of the lifting platform (32).

3. The real-time monitoring device for the operating status of medium and low voltage switchgear according to claim 2, characterized in that: The reciprocating screw (3) is driven by the motor shaft of the stepper motor fixedly installed at the lower end of the lifting support (2), and the reciprocating screw (3) is threadedly connected to the lifting slider (31).

4. The real-time monitoring device for the operating status of medium and low voltage switchgear according to claim 2, characterized in that: The T-shaped slider (33) matches the T-shaped groove (22), and the two T-shaped sliders (33) are symmetrically distributed on both sides of the lifting slider (31). The T-shaped sliders (33) and the T-shaped groove (22) are slidably connected up and down.

5. The real-time monitoring device for the operating status of medium and low voltage switchgear according to claim 1, characterized in that: The lower end of the storage tank (81) is inserted into the discharge port (84), and the vent seat (82) is slidably connected to the inner wall of the lifting groove (61).

6. The real-time monitoring device for the operating status of medium and low voltage switchgear according to claim 5, characterized in that: The lower end of the storage tank (81) is open, and the lower end of the inner cavity of the storage tank (81) is conical. The inner cavity of the storage tank (81) is connected to the inner cavity of the circular groove (83).

7. The real-time monitoring device for the operating status of medium and low voltage switchgear according to claim 6, characterized in that: The rotating material guiding mechanism includes a rotating shaft (9) rotatably connected to the inner cavity of the storage tank (81). The rotating shaft (9) is rotatably connected to the upper end of the inner cavity of the storage tank (81). The lower end of the rotating shaft (9) extends downward into the circular groove (83). A spiral plate (91) is fixedly sleeved on the rotating shaft (9). Multiple blades (92) are fixedly connected to the lower end of the rotating shaft (9) in a ring array.

8. The real-time monitoring device for the operating status of medium and low voltage switchgear according to claim 7, characterized in that: The spiral plate (91) is distributed at the lower end of the inner cavity of the storage tank (81), and the blade (92) is arranged in the circular groove (83).

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