A power distribution cabinet with an aging warning mechanism

Abstract

The invention relates to the field of power distribution cabinets, and discloses a power distribution cabinet with an aging early warning mechanism. The cabinet space on the front side of an equipment installation plate is inspected horizontally and reciprocally by means of a vertical detection tube, an exhaust fan and a horizontal screw module. First pyrolytic particle sensors vertically and equidistantly distributed on the vertical detection tube facilitate rapid capture of pyrolytic particles generated by heating of electrical equipment, thereby overcoming the problem of low sensitivity of smoke sensors used in traditional early warning devices and improving the sensitivity and timeliness of early warnings. The horizontal coordinate of the heating equipment is positioned by positioning the positions of two first pyrolytic particle sensors with the highest concentrations, and then the vertical coordinate of the heating electrical equipment is positioned by vertically moving a lifting frame and a second pyrolytic particle sensor, thereby realizing rapid and accurate positioning of the heating electrical equipment. At the same time, the heating electrical equipment is marked and positioned by starting a paint spraying device, thereby facilitating subsequent maintenance.

Description

Technical Field

[0001] The present invention relates to the field of power distribution cabinets, and more specifically, to a power distribution cabinet with an aging early warning mechanism. Background Art

[0002] Electrical equipment will produce pyrolytic particles when it is aged and heated or under high temperature. Pyrolytic particle electrical fire monitoring detectors use highly sensitive sensors to detect these pyrolytic particles flowing in the air. When electrical equipment fails or overheats, the pyrolytic particles produced will be captured by the detector and analyzed and judged by the signal processing unit. If the signal strength exceeds the preset threshold, the detector will send out an alarm signal to achieve early warning of electrical fires, thereby effectively preventing and controlling the occurrence of fires and providing important guarantees for the safe operation of electrical equipment.

[0003] The fire warning device commonly used in power distribution cabinets is smoke sensors. However, this method has limitations. In the early stage of aging of electrical equipment, due to the low heat generation, the smoke concentration generated is extremely low, or even no smoke is generated at all. Even if there is smoke, its concentration will be greatly reduced after it spreads in the larger internal space of the power distribution cabinet. Therefore, when the smoke sensor finally senses the smoke, the fire has often developed to a very intense stage, resulting in insufficient fire warning for the power distribution cabinet.

[0004] The existing Chinese patent publication number CN117854218B discloses a high-security fire alarm device for a distribution cabinet. The smoke sensor is arranged on the heat dissipation path. The smoke will flow quickly to the vicinity of the smoke sensor along the heat dissipation airflow, so that the alarm light will sound an alarm at the first time of spontaneous combustion, avoiding the problem of slow alarm response of the alarm light caused by poor air flow in the local area of ​​the box, greatly improving the safety performance; although this patent can increase the contact probability between smoke and the smoke sensor to a certain extent, the internal space of the cabinet is large, and the smoke is inevitably diffused and retained, and the concentration will be severely diluted, resulting in inaccurate detection concentration threshold. Summary of the invention

[0005] 1. Technical issues to be solved In view of the problems existing in the prior art, the purpose of the present invention is to provide a distribution cabinet with an aging warning mechanism, which can provide timely warning of aging, heating and fire of electrical equipment inside the distribution cabinet.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A power distribution cabinet with an aging early warning mechanism comprises a cabinet body, an equipment installation plate for installing electrical equipment is fixedly connected in the cabinet body, a secondary positioning detection mechanism is installed on the front side of the equipment installation plate, the secondary positioning detection mechanism comprises a vertical detection tube arranged vertically, vertically equidistantly distributed air inlets are opened on the side wall of the vertical detection tube, a first pyrolysis particle sensor is installed in the air inlet, a lower end of the vertical detection tube is connected to a buffer cylinder through a suction pipe, the buffer cylinder is connected to an exhaust fan, and an air outlet of the exhaust fan is connected to an exhaust pipe extending to the outside of the cabinet body; The vertical detection tube is fixedly connected with a vertical frame, the upper end of the vertical frame is connected with a horizontal screw module that drives it to reciprocate horizontally, a lifting frame is sleeved on the vertical detection tube, a second pyrolytic particle sensor is nested at the lower part of the lifting frame, the second pyrolytic particle sensor is connected with a connecting pipe, and the connecting pipe is connected with the vertical detection tube; the lifting frame is connected with a vertical screw module that drives it to move up and down along the vertical detection tube; A paint spraying device is installed on the upper part of the lifting frame, a controller and a buzzer alarm are arranged in the cabinet, a communication module is arranged inside the controller, and the communication module is connected to the remote monitoring room through a wireless network; the first pyrolytic particle sensor, the second pyrolytic particle sensor, the horizontal screw module, the exhaust fan, and the vertical screw module are all electrically connected to the controller arranged in the cabinet.

[0008] As a further solution of the present invention: the buffer cylinder is connected to a fire extinguishing tank through a feed pipe, the fire extinguishing tank is filled with high-pressure fire extinguishing agent, a solenoid valve is installed at the connection between the feed pipe and the fire extinguishing tank, and the solenoid valve is electrically connected to the controller.

[0009] As a further solution of the present invention: the paint spraying device includes a paint spraying tube arranged in the same direction as the second pyrolytic particle sensor, the paint spraying tube is connected to a piston cylinder, a piston disk is nested in the piston cylinder, and the piston disk is connected to an electric cylinder; the upper end of the piston cylinder is connected to a storage tank through a suction pipe, and the storage tank is filled with colored paint.

[0010] As a further solution of the present invention: the first pyrolytic particle sensor and the second pyrolytic particle sensor have the same structure. The first pyrolytic particle sensor includes a cylinder and a sensor body fixed at the center of the cylinder. The cylinder is a horizontally arranged hollow cylindrical structure with openings at both ends. The cylinder is fixedly connected to the inner wall of the air inlet.

[0011] As a further solution of the present invention: the vertical detection tube is a vertically arranged hollow circular tube, the air inlets are opened on its circumferential side wall and are linearly equidistantly distributed, and the vertical length of the vertical detection tube is greater than the vertical length of the equipment mounting plate.

[0012] As a further solution of the present invention: the horizontal screw module is fixedly connected to the top wall of the cabinet, the horizontal screw module includes a horizontal slide rail which is arranged horizontally and opens downward, the upper part of the vertical frame is nested in the horizontal slide rail, a horizontal screw which is threadedly connected to the vertical frame is nested in the horizontal slide rail, a horizontal screw motor is connected to the end of the horizontal screw, and the horizontal length of the horizontal screw is greater than the horizontal width of the equipment mounting plate.

[0013] As a further solution of the present invention: the lifting frame is in the shape of a hollow cylinder, and is provided with a hollow cavity for the vertical detection tube to pass through, a avoidance cavity connected to the hollow cavity is provided on the side of the hollow cavity facing the air inlet, and a fan-shaped cavity is provided in the middle of the lifting frame facing the air inlet.

[0014] As a further solution of the present invention: a partition is provided below the equipment installation plate to divide the cabinet into an upper cavity and a lower cavity, and the exhaust fan and the fire extinguishing storage tank are both installed in the lower cavity.

[0015] As a further solution of the present invention: a one-way valve is installed at the connection points between the paint spraying pipe and the material extraction pipe and the piston cylinder.

[0016] Compared with the prior art, the advantages of the present invention are: (1) The present invention uses a vertical detection tube, an exhaust fan and a horizontal screw module to perform a horizontal reciprocating inspection of the cabinet space on the front side of the equipment installation plate. The first pyrolytic particle sensors vertically equidistantly distributed on the vertical detection tube are convenient for quickly capturing the pyrolytic particles generated by the heating of the electrical equipment, overcoming the problem of low sensitivity of the smoke sensor used in the traditional early warning device, and improving the sensitivity and timeliness of the early warning; and the horizontal coordinate of the heating equipment is located by locating the positions of the two first pyrolytic particle sensors with the highest concentration, and then the vertical coordinate of the heating electrical equipment is located by vertically moving the lifting frame and the second pyrolytic particle sensor, thereby realizing rapid and accurate positioning of the heating electrical equipment, and at the same time, the heating electrical equipment is marked and located by starting the paint spraying device, which is convenient for subsequent maintenance.

[0017] (2) The present invention is provided with a fire extinguishing tank connected to the vertical detection tube. When the concentration of pyrolytic particles detected by the first pyrolytic particle sensor or the second pyrolytic particle sensor is greater than a set threshold, the solenoid valve connected to the fire extinguishing tank is activated to inject high-pressure fire extinguishing agent into the vertical detection tube, thereby achieving rapid coverage and fire extinguishing by the fire extinguishing agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the cabinet in the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the secondary positioning detection mechanism in the present invention; Figure 4 It is a longitudinal cross-sectional structural schematic diagram of the present invention; Figure 5 for Figure 4 A schematic diagram of the enlarged structure at A in the middle; Figure 6 It is a schematic diagram of the assembly structure of the vertical detection tube and the lifting frame in the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the lifting frame in the present invention; Figure 8 It is a horizontal cross-sectional structural schematic diagram of the paint spraying device in the present invention; Fig. 9 It is a schematic diagram of the flow of air in the cabinet during detection; Fig.10 Schematic diagram of the moving state of the vertical detection tube and lifting frame.

[0019] Explanation of the numbers in the figure: 1. Cabinet; 2. Equipment mounting plate; 3. Secondary positioning detection mechanism; 4. Vertical detection tube; 401. Air inlet; 5. First pyrolytic particle sensor; 501. Cylinder; 502. Sensor body; 6. Vertical frame; 7. Horizontal screw module; 8. Suction pipe; 9. Buffer cylinder; 10. Exhaust fan; 11. Exhaust pipe; 12. Lifting frame; 1201. Hollow cavity; 1202. Avoidance cavity; 1203. Fan-shaped cavity; 13. Vertical screw module; 14. Second pyrolytic particle sensor; 15. Connecting pipe; 16. Paint spraying tube; 17. Piston cylinder; 18. Piston disc; 19. Electric cylinder; 20. Extraction pipe; 21. Storage tank; 22. Fire extinguishing tank; 23. Feed pipe; 24. Solenoid valve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-10 In one embodiment of the present invention, a power distribution cabinet with an aging warning mechanism includes a cabinet body 1, an equipment installation plate 2 for installing electrical equipment is fixedly connected in the cabinet body 1, a secondary positioning detection mechanism 3 is installed on the front side of the equipment installation plate 2, the secondary positioning detection mechanism 3 includes a vertical detection tube 4 arranged vertically, vertically equidistantly distributed air inlet holes 401 are opened on the side wall of the vertical detection tube 4, a first pyrolysis particle sensor 5 is installed in the air inlet hole 401, the lower end of the vertical detection tube 4 is connected to a buffer cylinder 9 through a suction pipe 8, the buffer cylinder 9 is connected to an exhaust fan 10, and the air outlet of the exhaust fan 10 is connected to an exhaust pipe 11 extending to the outside of the cabinet body 1; The vertical detection tube 4 is fixedly connected to a vertical frame 6, and the upper end of the vertical frame 6 is connected to a horizontal screw module 7 that drives it to reciprocate horizontally. A lifting frame 12 is sleeved on the vertical detection tube 4, and a second pyrolytic particle sensor 14 is nested at the lower part of the lifting frame 12. The second pyrolytic particle sensor 14 is connected to a connecting pipe 15, and the connecting pipe 15 is connected to the vertical detection tube 4; the lifting frame 12 is connected to a vertical screw module 13 that drives it to move up and down along the vertical detection tube 4; a paint spraying device is installed on the upper part of the lifting frame 12, and a controller and a buzzer alarm are arranged in the cabinet 1. A communication module is arranged inside the controller, and the communication module is connected to the remote monitoring room through a wireless network; The first pyrolytic particle sensor 5 , the second pyrolytic particle sensor 14 , the horizontal screw module 7 , the exhaust fan 10 , and the vertical screw module 13 are all electrically connected to a controller disposed in the cabinet 1 .

[0024] Specifically, during the daily operation of the distribution cabinet, the aging warning mechanism is used to detect the aging of the electrical equipment in the distribution cabinet. Fig. 9 and Fig.10 , including the following steps: Step 1: Daily inspection. The controller starts the first pyrolytic particle sensor 5, the horizontal screw module 7 and the exhaust fan 10. The horizontal screw module 7 drives the vertical detection tube 4 to move back and forth laterally in front of the equipment mounting plate 2. A large range of pyrolytic particles are captured by a plurality of first pyrolytic particle sensors 5 distributed vertically and equidistantly. At the same time, the exhaust fan 10 is used for negative pressure suction, so that the airflow in the cabinet 1 can more easily enter the vertical detection tube 4 through the air inlet 401, and then the type and concentration of pyrolytic particles in the airflow are detected by the first pyrolytic particle sensor 5. Step 2: detection alarm. When one of the first pyrolytic particle sensors 5 detects pyrolytic particles, the controller starts the buzzer alarm and the internal communication module. The communication module transmits the alarm information to the remote monitoring room for timely warning. Step 3: lateral positioning. The horizontal screw module 7 drives the vertical detection tube 4 to continue to move back and forth horizontally. The controller compares the detection values ​​of each first pyrolytic particle sensor 5 until the first pyrolytic particle sensor 5 with the highest detection value reaches the highest concentration position, and then closes the horizontal screw module 7. Step 4, vertical positioning; the controller locates the positions of the two first pyrolytic particle sensors 5 with the highest concentrations, starts the vertical screw module 13 and the second pyrolytic particle sensor 14, so that the second pyrolytic particle sensor 14 moves between the two first pyrolytic particle sensors 5 with the highest concentration values, and then moves vertically up and down until the second pyrolytic particle sensor 14 is located at the position with the highest detection value, and then closes the vertical screw module 13; It should be noted that the length of the vertical detection tube 4, the spacing and positions of the air inlet holes 401 are all known, and the driving motors of the vertical screw module 13 and the horizontal screw module 7 are both equipped with Hall sensors to facilitate the control of the vertical position of the lifting frame 12; Step five, paint calibration, the controller locates and records the calibration position of the second pyrolytic particle sensor 14 with the highest concentration value, and then starts the vertical screw module 13 again, the lifting frame 12 drives the paint spraying device to move to the calibration position, and then the controller starts the paint spraying device to spray paint, and performs paint calibration on the electrical equipment at the position with the highest pyrolytic particle release concentration.

[0025] Compared with the traditional fire warning device of the distribution cabinet, the present invention performs horizontal reciprocating inspection on the cabinet space on the front side of the equipment installation plate 2 through the vertical detection tube 4, the exhaust fan 10 and the horizontal screw module 7. The first pyrolytic particle sensor 5 vertically and equidistantly distributed on the vertical detection tube 4 is convenient for quickly capturing the pyrolytic particles generated by the heating of the electrical equipment, overcoming the problem of low sensitivity of the smoke sensor used in the traditional warning device, and improving the sensitivity and timeliness of the warning; and the horizontal coordinate of the heating equipment is located by locating the positions of the two first pyrolytic particle sensors 5 with the highest concentration, and then the vertical coordinate of the heating electrical equipment is located by the vertical movement of the lifting frame 12 and the second pyrolytic particle sensor 14, thereby realizing the rapid and accurate positioning of the heating electrical equipment, and at the same time, the heating electrical equipment is marked and located by starting the paint spraying device, which is convenient for subsequent maintenance.

[0026] See also Figure 5 The first pyrolytic particle sensor 5 and the second pyrolytic particle sensor 14 have the same structure. The first pyrolytic particle sensor 5 includes a cylinder 501 and a sensor body 502 fixed at the center of the cylinder 501. The cylinder 501 is a hollow cylindrical structure that is horizontally arranged and opened at both ends. The cylinder 501 is fixedly connected to the inner wall of the air inlet 401.

[0027] Specifically, the negative pressure generated by the exhaust fan 10 causes the airflow in the cabinet 1 to pass through the sensor body 502 in the cylinder 501, thereby improving the sensitivity of capturing and detecting pyrolysis particles.

[0028] See also Figure 6 The vertical detection tube 4 is a vertically arranged hollow circular tube, and the air inlet holes 401 are opened on its circumferential side wall and are linearly and equidistantly distributed. The vertical length of the vertical detection tube 4 is greater than the vertical length of the equipment mounting plate 2.

[0029] Specifically, the airflow on the front side of the equipment installation plate 2 is uniformly extracted through the vertically linearly equidistantly distributed air inlet holes 401, thereby improving the efficiency of inspection.

[0030] See also Figure 3 The horizontal screw module 7 is fixedly connected to the top wall of the cabinet 1, and the horizontal screw module 7 includes a horizontal slide rail which is arranged horizontally and opens downward. The upper part of the vertical frame 6 is nested in the horizontal slide rail. A horizontal screw which is threadedly connected to the vertical frame 6 is nested in the horizontal slide rail. A horizontal screw motor is connected to the end of the horizontal screw. The horizontal length of the horizontal screw is greater than the horizontal width of the equipment mounting plate 2.

[0031] Specifically, it is convenient to implement the inspection coverage of the front cavity of the equipment installation plate 2 .

[0032] See also Figure 5 and Figure 8The paint spraying device includes a paint spraying tube 16 arranged in the same direction as the second pyrolytic particle sensor 14. The paint spraying tube 16 is connected to a piston cylinder 17, a piston disk 18 is nested in the piston cylinder 17, and the piston disk 18 is connected to an electric cylinder 19; the upper end of the piston cylinder 17 is connected to a storage tank 21 through a suction pipe 20, and the storage tank 21 is filled with color paint.

[0033] It should be noted that both the paint spraying pipe 16 and the material extraction pipe 20 are installed with a one-way valve at the connection points with the piston cylinder 17 .

[0034] Specifically, when it is necessary to mark the heating electrical equipment, the controller starts the electric cylinder 19, and the electric cylinder 19 drives the piston disc 18 to move back and forth in the piston cylinder 17. The piston cylinder 17 extracts and sprays the color paint in the storage tank 21 to achieve quantitative spray marking and ensure the marking effect.

[0035] See also Figure 8 The lifting frame 12 is in the shape of a hollow cylinder. The lifting frame 12 is provided with a hollow cavity 1201 for the vertical detection tube 4 to pass through. The hollow cavity 1201 is provided with a avoidance cavity 1202 connected with the hollow cavity 1201 on the side facing the air inlet 401. The middle part of the lifting frame 12 is provided with a fan-shaped cavity 1203 on the side facing the air inlet 401.

[0036] Specifically, by means of the avoidance cavity 1202 and the fan-shaped cavity 1203 , the lifting frame 12 will not block the air inlet hole 401 when sliding on the vertical detection tube 4 , thereby facilitating the secondary positioning operation.

[0037] In another embodiment of the present invention, see Figure 4 The buffer cylinder 9 is connected to the fire extinguishing tank 22 through a feed pipe 23. The fire extinguishing tank 22 is filled with a high-pressure fire extinguishing agent. A solenoid valve 24 is installed at the connection between the feed pipe 23 and the fire extinguishing tank 22. The solenoid valve 24 is electrically connected to the controller.

[0038] Specifically, when the pyrolytic particle concentration detected by the first pyrolytic particle sensor 5 or the second pyrolytic particle sensor 14 exceeds the set threshold, the controller turns off the exhaust fan 10 and starts the solenoid valve 24, and the high-pressure fire extinguishing agent in the fire extinguishing tank 22 is injected into the vertical detection tube 4 through the buffer cylinder 9 and the suction pipe 8, and is ejected from the air inlet 401 after passing through the first pyrolytic particle sensor 5. At the same time, the high-pressure fire extinguishing agent is ejected from the second pyrolytic particle sensor 14 through the connecting pipe 15, performing a fire extinguishing operation with a larger coverage area, while better protecting the first pyrolytic particle sensor 5 and the second pyrolytic particle sensor.

[0039] See also Figure 4 A partition is provided below the equipment installation plate 2 to divide the cabinet 1 into an upper cavity and a lower cavity, and the exhaust fan 10 and the fire extinguishing storage tank 22 are both installed in the lower cavity.

[0040] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A power distribution cabinet with an aging warning mechanism, characterized in that: The cabinet (1) comprises a device installation plate (2) for installing electrical equipment fixedly connected inside the cabinet (1), a secondary positioning detection mechanism (3) being installed on the front side of the device installation plate (2), the secondary positioning detection mechanism (3) comprising a vertical detection tube (4) arranged vertically, a side wall of the vertical detection tube (4) being provided with air inlet holes (401) distributed vertically and equidistantly, a first pyrolysis particle sensor (5) being installed in the air inlet hole (401), a lower end of the vertical detection tube (4) being connected to a buffer cylinder (9) via a suction pipe (8), the buffer cylinder (9) being connected to an exhaust fan (10), and an air outlet of the exhaust fan (10) being connected to an exhaust pipe (11) extending to the outside of the cabinet (1); The vertical detection tube (4) is fixedly connected to a vertical frame (6); the upper end of the vertical frame (6) is connected to a horizontal screw module (7) for driving the vertical detection tube (4) to reciprocate laterally; a lifting frame (12) is sleeved on the vertical detection tube (4); a second pyrolytic particle sensor (14) is embedded in the lower part of the lifting frame (12); the second pyrolytic particle sensor (14) is connected to a connecting pipe (15); the connecting pipe (15) is connected to the vertical detection tube (4); the lifting frame (12) is connected to a vertical screw module (13) for driving the lifting frame (12) to move up and down along the vertical detection tube (4); A paint spraying device is installed on the upper part of the lifting frame (12); a controller and a buzzer alarm are arranged in the cabinet (1); a communication module is arranged inside the controller, and the communication module is connected to the remote monitoring room through a wireless network; the first pyrolytic particle sensor (5), the second pyrolytic particle sensor (14), the horizontal screw module (7), the exhaust fan (10), and the vertical screw module (13) are all electrically connected to the controller arranged in the cabinet (1).

2. A power distribution cabinet with an aging warning mechanism according to claim 1, characterized in that: The buffer cylinder (9) is connected to a fire extinguishing tank (22) via a feed pipe (23), the fire extinguishing tank (22) is filled with a high-pressure fire extinguishing agent, and a solenoid valve (24) is installed at the connection point between the feed pipe (23) and the fire extinguishing tank (22), and the solenoid valve (24) is electrically connected to a controller.

3. A power distribution cabinet with an aging warning mechanism according to claim 1, characterized in that: The paint spraying device comprises a paint spraying tube (16) arranged in the same direction as the second pyrolytic particle sensor (14); the paint spraying tube (16) is connected to a piston cylinder (17); a piston disc (18) is nested in the piston cylinder (17); the piston disc (18) is connected to an electric cylinder (19); the upper end of the piston cylinder (17) is connected to a material storage tank (21) through a material extraction tube (20); the material storage tank (21) is filled with color paint.

4. A power distribution cabinet with an aging warning mechanism according to claim 1, characterized in that: The first pyrolytic particle sensor (5) and the second pyrolytic particle sensor (14) have the same structure. The first pyrolytic particle sensor (5) comprises a cylinder (501) and a sensor body (502) fixed at the center of the cylinder (501). The cylinder (501) is a hollow cylindrical structure that is horizontally arranged and open at both ends. The cylinder (501) is fixedly connected to the inner wall of the air inlet (401).

5. A power distribution cabinet with an aging warning mechanism according to claim 1, characterized in that: The vertical detection tube (4) is a hollow circular tube arranged vertically, and the air inlet holes (401) are opened on its circumferential side wall and are linearly and equidistantly distributed. The vertical length of the vertical detection tube (4) is greater than the vertical length of the equipment mounting plate (2).

6. A power distribution cabinet with an aging warning mechanism according to claim 1, characterized in that: The horizontal screw module (7) is fixedly connected to the top wall of the cabinet (1), and comprises a horizontal slide rail which is arranged transversely and opens downward. The upper part of the vertical frame (6) is nested in the horizontal slide rail. A horizontal screw which is threadedly connected to the vertical frame (6) is nested in the horizontal slide rail. A horizontal screw motor is connected to the end of the horizontal screw. The horizontal length of the horizontal screw is greater than the horizontal width of the equipment mounting plate (2).

7. A power distribution cabinet with an aging warning mechanism according to claim 1, characterized in that: The lifting frame (12) is in the shape of a hollow cylinder. The lifting frame (12) is provided with a hollow cavity (1201) for the vertical detection tube (4) to pass through. A avoidance cavity (1202) communicating with the hollow cavity (1201) is provided on the side of the hollow cavity (1201) facing the air inlet (401). A fan-shaped cavity (1203) is provided in the middle of the lifting frame (12) facing the side of the air inlet (401).

8. A power distribution cabinet with an aging warning mechanism according to claim 2, characterized in that: A partition is provided below the equipment installation plate (2) to divide the cabinet (1) into an upper cavity and a lower cavity, and the exhaust fan (10) and the fire extinguishing storage tank (22) are both installed in the lower cavity.

9. A power distribution cabinet with an aging warning mechanism according to claim 3, characterized in that: Both the paint spraying pipe (16) and the material extraction pipe (20) are provided with a one-way valve at the connection points with the piston cylinder (17).

Images