Composite insulator aging experiment device

Abstract

The invention discloses a composite insulator aging experiment device, and belongs to the field of aging experiment equipment, and the device comprises an experiment platform which is provided with a water tank and an experiment cabin; the sliding door is arranged at the opening of the experiment cabin in a sliding manner, and an observation window is arranged on the sliding door; the pressurizing device is used for connecting the composite insulator into the boosting loop; a spraying mechanism; the lifting plate is installed in the experiment cabin through a lifting mechanism, a controller is arranged on the spraying mechanism, and a position sensor is arranged on the lifting plate; through the annularly distributed nozzles and the adjustable angle design, it is ensured that water mist uniformly covers the surface of the composite insulator, non-uniformity of manual spraying is avoided, and the experimental result is closer to the real working condition. The flow control valve is combined with the controller to realize accurate adjustment of the water spraying amount, different humidity, salt mist or icing conditions can be simulated, and diversified experiment requirements are met. The airtight design of the experiment module effectively isolates interference of external dust, airflow and the like, and ensures the accuracy of experiment data.

Description

Technical Field

[0001] The present invention relates to the field of aging experimental equipment, and particularly to an aging experimental device for composite insulators. Background Art

[0002] As a crucial insulation device in the power system, composite insulators bear the important responsibility of ensuring the safe and stable power transmission. However, due to their long-term exposure to complex and harsh natural environments such as humidity and pollution, aging phenomena often occur, which are extremely likely to cause serious faults such as surface flashover, posing a huge threat to the reliable operation of the power system. In order to accurately evaluate the anti-aging performance of composite insulators, it is necessary to use experimental means to simulate the key processes such as moisture absorption and pressurization faced by them in actual working conditions.

[0003] Currently, during the aging experiment of composite insulators, the traditional method of manually spraying water on the insulators is relatively common. However, this method has obvious drawbacks. It highly relies on manual spraying of water mist, not only difficult to ensure uniformity but also very difficult to accurately control the amount of water, resulting in the experimental results being unable to truly and accurately reflect the moisture state on the surface of composite insulators during actual operation. In addition, during the entire experimental operation process, many links such as the installation, lifting, and pressurization of insulators need to be intervened manually step by step, which not only consumes a large amount of manpower and time but also has human operation errors. At the same time, when the experiment is carried out in the external environment, impurities such as dust in the air will inevitably interfere with the experimental results. More importantly, there are certain safety hazards during the coordinated operation of various operations. Once an operation error occurs, it is very likely to cause serious safety accidents. For this reason, we have proposed an aging experimental device for composite insulators. Summary of the Invention

[0004] The purpose of the present invention is to solve the existing operation and environmental interference problems in the aging experiment of composite insulators.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: An aging experimental device for composite insulators, characterized by comprising: An experimental platform, on which a water tank and an experimental chamber are provided, and the experimental chamber is used to accommodate the composite insulators to be tested; A sliding door, slidably arranged at the opening of the experimental chamber, and an observation window is provided on the sliding door; A pressurizing device, used to connect the composite insulators to the step-up circuit, and a wire hole is opened on the bottom plate of the experimental chamber for the wire of the pressurizing device to pass through; Spraying mechanism, including a plurality of spray heads distributed in a ring, a water supply pipe, a ring pipe and a flow control valve. The spray heads are evenly arranged around the axis of the composite insulator and are connected to the water supply pipe through threaded joints. One end of the water supply pipe is connected to a water tank, and the other end extends to the top of the experimental cabin and is communicated with the ring pipe; Lifting plate, installed in the experimental cabin through a lifting mechanism. A suspension hook is provided in the middle of the lifting plate to fix the composite insulator. A controller is provided on the spraying mechanism, and a position sensor is provided on the lifting plate. When the controller detects that the lifting plate rises to the ring pipe, the position sensor triggers the spraying mechanism to start. Drainage holes are evenly opened on the bottom plate of the experimental cabin and communicate with the water tank.

[0006] Preferably, the pipe part of the spray head can be bent to adjust the angle, and the side wall of the water tank is provided with a water inlet and a drain outlet.

[0007] Preferably, the lifting mechanism includes a servo motor, a horizontally installed shaft, a lifting screw, a sleeve, a first gear and a second gear. The output end of the servo motor is connected to the horizontally installed shaft. The sleeve is fixed on both sides of the bottom plate of the experimental cabin and is in threaded cooperation with the lifting screw. The first gear is installed on the sleeve through a bearing, and the second gear is arranged at both ends of the horizontally installed shaft and meshes with the first gear.

[0008] Preferably, stabilizing sleeves are provided on both sides of the front end of the bottom of the lifting plate, and stabilizing rods are correspondingly provided on both sides of the front end of the bottom plate of the experimental cabin. The stabilizing sleeves slide up and down along the stabilizing rods. Both the sleeve and the stabilizing rod are fixed to the bottom plate of the experimental cabin through mounting frame plates. The drainage holes are located inside the mounting frame plates, and an arc-shaped guiding surface is provided on the inner circumference of the mounting frame plates.

[0009] Preferably, the lifting plate and the lifting screw are connected through a bracket structure. The bracket structure includes a connecting frame and a stabilizing plate. The connecting frame is arranged at the top of the lifting screw and is connected to the stabilizing sleeve. The stabilizing plate is fixed to the rear end of the lifting plate and moves vertically along the inner wall of the experimental cabin.

[0010] Preferably, first slide rails are provided on both sides of the rear end of the inner wall of the experimental cabin, and first sliders that are slidably matched with the first slide rails are provided on both sides of the rear end of the stabilizing plate.

[0011] Preferably, the sliding door is slidably connected to the second slide rail on the experimental platform through a second slider. The second slide rail is arranged on the upper and lower edges of the opening of the experimental cabin.

[0012] Preferably, a threaded turning rod is provided on the lifting plate, and a positioning clip is connected to the bottom of the threaded turning rod. An anti-slip pad is provided on the inner wall of the positioning clip to limit the displacement of the end part of the composite insulator.

[0013] Preferably, an annular positioning groove is formed on the lifting plate, and a plurality of partition plates are arranged therein to form a channel. When the lifting plate rises, the nozzle passes through the channel and aligns with the outer periphery of the umbrella skirt of the composite insulator.

[0014] Preferably, a sealing rubber ring is arranged in the wire hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Through the annularly distributed nozzles and the adjustable angle design, it is ensured that the water mist uniformly covers the surface of the composite insulator, avoiding the non-uniformity of manual spraying, and making the experimental results closer to the actual working conditions. The flow control valve combined with the controller realizes the precise adjustment of the water spraying amount, and can simulate different humidity, salt fog or icing conditions to meet the diverse experimental requirements. The airtight design of the experimental chamber effectively isolates external interferences such as dust and air flow, ensuring the accuracy of experimental data.

[0016] Driven by the servo motor in the lifting mechanism and combined with the position sensor, it realizes automatic lifting and triggers the spraying mechanism when reaching the preset height, reducing manual intervention. The operator only needs to install the insulator and start the program, and subsequent steps such as lifting, spraying, and pressurization are automatically completed, greatly improving the experimental efficiency.

[0017] Through the cooperation of the hanging hook and the positioning clip with the anti-slip pad, it is ensured that the insulator does not shake during the experiment, avoiding experimental errors or safety hazards caused by loosening. The sliding door and the sealing rubber ring prevent the leakage of water mist or electric arc during high-voltage experiments, ensuring the safety of operators.

[0018] The lifting plate is double-guided by the stabilizing rod and the slide rail, avoiding deviation or jamming during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the split structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the present invention in the use state.

[0023] Figure 4 For the present invention Figure 4 It is a schematic diagram of the upward view sectional view.

[0024] Figure 5 Schematic diagram of the right side view of the experimental platform and water tank of the present invention

[0025] Figure 6 Schematic diagram of the rear view of the lifting mechanism and lifting plate of the present invention

[0026] Figure 7 Schematic diagram of the partial structure of the spraying mechanism of the present invention

[0027] Figure 8 Schematic diagram of the partial structure of the lifting mechanism of the present invention

[0028] Figure 9 Of the present invention Figure 2 Partial structure schematic diagram

[0029] Figure 10 Schematic diagram of the structure of the experimental cabin of the present invention

[0030] Figure 11 Schematic diagram of the positioning clip of the present invention in the working state

[0031] Figure 12 Partial disassembly schematic diagram of the nozzle of the present invention

[0032] Explanation of figure numbers: 1. Experimental platform; 2. Water tank; 3. Experimental cabin; 4. Sliding door; 5. Observation window; 6. Pressurizing device; 7. Wire hole; 8. Nozzle; 9. Water supply pipe; 10. Annular pipe; 11. Flow control valve; 12. Lifting plate; 13. Lifting mechanism; 14. Hanging hook; 15. Controller; 16. Position sensor; 17. Drain hole; 18. Water inlet; 19. Drain outlet; 20. Servo motor; 21. Horizontal mounting shaft rod; 22. Lifting screw; 23. Sleeve; 24. First gear; 25. Second gear; 26. Stabilizing sleeve; 27. Stabilizing rod; 28. Mounting frame plate; 29. Bracket structure; 30. Connecting frame; 31. Stabilizing plate; 32. First slide rail; 33. First slider; 34. Second slider; 35. Second slide rail; 36. Threaded rotating rod; 37. Positioning clip; 38. Anti-slip pad; 39. Annular positioning groove; 40. Partition; 41. Sealing rubber ring. Detailed implementation manners

[0033] The present invention will be further described in detail below with reference to the accompanying drawings.

[0034] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious deformations. The basic principles defined in the following description can be used in other implementation manners, deformation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not depart from the spirit and scope of the present invention.

[0035] Those skilled in the art should understand that in the disclosure of the present invention, the orientations or positions indicated by terms such as "longitudinal", "lateral", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or position relationships shown in the drawings. It is only for the convenience of simplifying the description of the present invention, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention.

[0036] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one component can be one, while in other embodiments, the number of this component can be multiple. The term "one" should not be construed as a limitation on the quantity.

[0037] Please refer to Figure 1 - Figure 12 , including: An experimental platform 1, on which a water tank 2 and an experimental chamber 3 are provided. The experimental chamber 3 is used to accommodate the composite insulator to be tested; A sliding door 4, slidably arranged at the opening of the experimental chamber 3. An observation window 5 is provided on the sliding door 4; A pressurizing device 6, used to connect the composite insulator to a boosting circuit. A wire hole 7 is opened on the bottom plate of the experimental chamber 3 for the wire of the pressurizing device 6 to pass through; A spraying mechanism, including a plurality of spray heads 8 distributed in a ring, a water supply pipe 9, a ring pipe 10 and a flow control valve 11. The spray heads 8 are evenly arranged around the axis of the composite insulator and are connected to the water supply pipe 9 through threaded joints. One end of the water supply pipe 9 is connected to the water tank 2, and the other end extends to the top of the experimental chamber 3 and is communicated with the ring pipe 10; A lifting plate 12, installed in the experimental chamber 3 through a lifting mechanism 13. A hanging hook 14 is provided in the middle of the lifting plate 12 to fix the composite insulator. A controller 15 is provided on the spraying mechanism, and a position sensor 16 is provided on the lifting plate 12. When the controller 15 detects that the lifting plate 12 rises to the ring pipe 10, the position sensor 16 triggers the spraying mechanism to start. Drainage holes 17 are evenly opened on the bottom plate of the experimental chamber 3 and communicate with the water tank 2.

[0038] In the specific implementation manner, the composite insulator aging experiment device in the present application mainly consists of the following structures: The experimental platform 1 serves as the basic framework of the device, and a water tank 2 and an experimental chamber 3 are fixed on its top. The water tank 2 is located behind the experimental chamber 3, and the two are connected through a water supply pipe 9 and a drain hole 17. The experimental chamber 3 is an airtight chamber, and a sliding door 4 is provided at the front opening. The sliding door 4 is slidably connected to the second slide rail 35 on the experimental chamber 3 through a second slider 34 to realize the opening and closing operation. A double-layer tempered glass observation window 5 is installed on the sliding door 4 to monitor the moisture state on the surface of the insulator in the chamber in real time. The upper and lower ends of the front side of the experimental chamber 3 extend outwards, and the extended part at the lower end forms a space with the experimental platform 1 for accommodating a pressurizing device 6. Its wires pass through a wire hole 7 opened at the front end of the bottom plate of the experimental chamber 3 and enter the chamber. A sealing rubber ring 41 is embedded in the wire hole 7 to ensure the airtightness of the chamber body.

[0039] The spraying mechanism consists of an annular pipe 10, a plurality of adjustable-angle nozzles 8, a water supply pipe 9 and a flow control valve 11. The annular pipe 10 is fixed on the top of the experimental chamber 3. The nozzles 8 are evenly installed around the axis of the composite insulator through threaded joints. The pipe part of the nozzle 8 can be bent to adjust the angle to ensure that the water mist covers the surface of the insulator umbrella skirt. One end of the water supply pipe 9 is connected to the water tank 2, and the other end extends to the top of the experimental chamber 3 and is connected to the annular pipe 10. The flow control valve 11 adjusts the water spraying amount through a controller 15 to achieve precise control.

[0040] The lifting plate 12 is installed in the experimental chamber 3 through a lifting mechanism 13. The lifting plate 12 is connected to the lifting screw 22 in the lifting mechanism 13 through a bracket structure 29. The bracket structure 29 includes a connecting frame 30 and a stabilizing plate 31. The lifting mechanism 13 consists of a servo motor 20, a horizontally installed shaft 21, a lifting screw 22, a sleeve 23, a first gear 24 and a second gear 25. The servo motor 20 drives the horizontally installed shaft 21 to rotate, drives the lifting screw 22 to rotate through the meshing of the first gear 24 and the second gear 25. The lifting screw 22 is in threaded cooperation with the sleeve 23 to drive the lifting plate 12 to lift vertically. A hanging hook 14 is provided in the middle of the lifting plate 12 for hanging the composite insulator; on both sides of the front end of its bottom, stabilizing sleeves 26 are provided, which slide along the stabilizing rod 27 at the front end of the bottom plate of the experimental chamber 3, and the rear end is slidably matched with the first slide rail 32 on the inner wall of the experimental chamber 3 through a first slider 33 on the stabilizing plate 31 to ensure a stable lifting process.

[0041] The lifting plate 12 is provided with a threaded rotating rod 36, and a positioning clamp 37 is connected to its bottom. An inner wall of the positioning clamp 37 is provided with a rubber anti-slip pad 38 for fixing the end of the composite insulator to prevent displacement. An annular positioning groove 39 is formed on the surface of the lifting plate 12, and a partition 40 is arranged in the groove to form a channel for the nozzle 8. When the lifting plate 12 rises to the top, the nozzle 8 passes through the channel formed by the annular positioning groove 39 and the partition 40 to align with the outer circumference of the insulator skirt. Drainage holes 17 are evenly formed in the bottom plate of the experimental chamber 3, and an inner circumference of a frame plate 28 installed around the drainage holes 17 is provided with an arc-shaped flow guiding surface to guide the sprayed water to the water tank 2 for recycling. A water inlet 18 and a drain outlet 19 are arranged on a side wall of the water tank 2 to be externally connected to a water source or discharge waste water.

[0042] Working principle First, the experimenter needs to gently open the special sliding door 4. The sliding door 4 is precisely designed and made of well-sealed materials to ensure that the environment inside the experimental chamber 3 is not interfered by the outside during the experiment. After opening the door, carefully hang the composite insulator on the hanging hook 14 of the lifting plate 12. The hanging hook 14 has undergone special anti-rust treatment, and its shape and size are precisely adapted to the hanging part of the common composite insulator, providing a stable initial hanging support. Subsequently, the experimenter uses a special tool to screw the threaded rotating rod 36. The threaded rotating rod 36 is made of high-strength alloy steel, and its surface is finely processed with threads to ensure a smooth and stable rotation process. As the threaded rotating rod 36 rotates, the connected positioning clamp 37 will gradually approach the end of the insulator until the end of the insulator is firmly clamped. The inner side of the positioning clamp 37 is provided with an anti-slip pad 38. The anti-slip pad 38 is made of rubber material with anti-slip patterns, which can not only increase the friction force to prevent the insulator from sliding, but also will not damage the surface of the insulator, thus ensuring the installation stability of the insulator during the whole experiment and avoiding affecting the experimental results due to loosening. After the insulator is installed, the experimenter starts the servo motor 20 on the console. The servo motor 20 has high-precision speed control and strong torque output capabilities, and can accurately drive the subsequent mechanical transmission device. After the motor is started, power is transmitted to the lifting screw 22 through a group of carefully designed gear sets, the first gear 24 and the second gear 25. The lifting screw 22 starts to rotate under the drive of the gear set. Since it is threadedly connected to the lifting plate 12, the lifting plate 12 will move vertically upward along the stabilizing rod 27 and the first slide rail 32. The stabilizing rod 27 is made of solid stainless steel, has extremely high straightness and rigidity, and can effectively prevent the lifting plate 12 from shaking during the rising process. The first slide rail 32 is installed on the inner wall of the experimental chamber 3 and uses a high-precision linear slide rail. The rolling elements inside it can reduce the frictional resistance, making the rising process of the lifting plate 12 smoother and more stable. The lifting plate 12 will keep rising until it reaches the preset position accurately calculated and debugged at the top of the experimental chamber 3. The determination of this position comprehensively considers the space required for the experiment and the collaborative working requirements of the spraying mechanism, the pressurizing device 6, etc. During the rising process of the lifting plate 12, the position sensor 16 is always in a working state. The position sensor 16 uses advanced photoelectric induction technology and can accurately detect the position of the lifting plate 12. When the lifting plate 12 rises to the position of the annular pipe 10, the position sensor 16 will immediately capture this signal change and convert it into an electrical signal and send it to the controller 15. The controller 15 is the intelligent core of the entire experimental equipment and uses a high-performance microprocessor and a stable control algorithm. When it receives the signal sent by the position sensor 16, it will respond in a very short time and automatically issue an instruction to start the spraying mechanism. At this time, the flow control valve 11 starts to play a key role. The flow control valve 11 has an accurate flow regulation function. The experimenter can preset the required water pressure value through the controller 15. The valve core structure inside the flow control valve 11 can accurately adjust the opening degree according to the control signal, thereby accurately regulating the water pressure to ensure that the nozzle 8 can evenly spray water mist or a salt / ice water mixture on the insulator umbrella skirt. The nozzle 8 is specially designed, and the distribution and shape of its spray holes can ensure that the sprayed liquid covers the insulator umbrella skirt in a uniform fan shape, so as to simulate different actual working environments, such as humid coastal areas, cold high-altitude areas, etc. At the same time as the spraying operation is started, the pressurizing device 6 starts to be connected to work. The pressurizing device 6 uses professional high-voltage power supply equipment and can output different levels of voltage according to the actual working conditions. The pressurizing device 6 is connected to the bottom of the insulator through the wire hole 7, and good insulation and sealing measures are taken at the wire hole 7 to prevent electric leakage during the application of high voltage. According to the experimental plan, the experimenter sets the required voltage parameters on the controller 15, and the pressurizing device 6 applies voltage to the insulator according to the set value. At the same time, the experimenter can monitor the flashover phenomenon on the surface of the insulator in real time through the observation window 5. The observation window 5 is made of a special high-strength transparent material, which not only has good insulation performance but also provides a clear observation field of view. The experimenter needs to be equipped with professional observation and recording equipment, such as a high-definition camera and data acquisition software, to record and analyze the flashover phenomenon on the surface of the insulator in real time, including key data such as the time, location, and intensity of the flashover, providing detailed basis for subsequent experimental analysis. The sprayed water will flow down from the surface of the insulator and flow inside the mounting frame plate 28 to the drain hole 17. The drain holes 17 are distributed at appropriate positions at the bottom of the experimental chamber 3 to ensure effective collection of the sprayed liquid. The inner side of the mounting frame plate 28 is designed with a unique arc-shaped guiding surface, which can use the principles of gravity and fluid mechanics to collect the inflowing water into the water tank 2. The water tank 2 is made of corrosion-resistant material and is internally provided with a liquid level sensor (not shown in the figure), which can monitor the water level in the water tank 2 in real time. Through this water circulation system, the recycling of water resources is realized, which not only meets the environmental protection requirements but also reduces the experimental cost. After the experiment is over, the experimenter needs to open the drain port 19 to drain the wastewater generated during the experiment. A valve is installed at the drain port 19. Before draining the water, the experimenter needs to ensure the safety of the surrounding environment to avoid pollution of the environment by the wastewater. After draining is completed, the water tank 2 and the entire water circulation system also need to be cleaned and maintained to prepare for the next experiment.

[0043] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The object of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and described in the embodiments. Without departing from the said principles, the embodiments of the present invention can have any deformation or modification.

Claims

1. Composite insulator aging test device, characterized in that: include: An experimental platform (1) on which a water tank (2) and an experimental cabin (3) are arranged, wherein the experimental cabin (3) is used to accommodate a composite insulator to be tested; A sliding door (4) is slidably arranged at the opening of the experimental cabin (3), and an observation window (5) is provided on the sliding door (4); A pressurizing device (6) is used to connect the composite insulator to the boosting circuit, and the bottom plate of the experimental cabin (3) is provided with a wire hole (7) for the wire of the pressurizing device (6) to pass through; A spraying mechanism, comprising a plurality of sprinklers (8) distributed in an annular manner, a water supply pipe (9), an annular pipe (10) and a flow control valve (11), wherein the sprinklers (8) are evenly arranged around the axis of the composite insulator and connected to the water supply pipe (9) via a threaded joint, wherein one end of the water supply pipe (9) is connected to a water tank (2), and the other end extends to the top of the experimental chamber (3) and is connected to the annular pipe (10); A lifting plate (12) is installed in the experimental chamber (3) via a lifting mechanism (13); a hanging hook (14) is provided in the middle of the lifting plate (12) to fix the composite insulator; a controller (15) is provided on the spraying mechanism; a position sensor (16) is provided on the lifting plate (12); when the controller (15) detects that the lifting plate (12) rises to the annular pipe (10), the position sensor (16) triggers the spraying mechanism to start; and drainage holes (17) are evenly provided on the bottom plate of the experimental chamber (3) to communicate with the water tank (2).

2. The composite insulator aging test device according to claim 1 is characterized in that: The pipe portion of the nozzle (8) can be bent to adjust the angle, and the side wall of the water tank (2) is provided with a water inlet (18) and a water outlet (19).

3. The composite insulator aging test device according to claim 1 is characterized in that: The lifting mechanism (13) comprises a servo motor (20), a horizontally mounted shaft (21), a lifting screw (22), a sleeve (23), a first gear (24) and a second gear (25); the output end of the servo motor (20) is connected to the horizontally mounted shaft (21); the sleeve (23) is fixed to both sides of the bottom plate of the experimental cabin (3) and is threadedly engaged with the lifting screw (22); the first gear (24) is mounted on the sleeve (23) via a bearing; and the second gear (25) is arranged at both ends of the horizontally mounted shaft (21) and is meshed with the first gear (24).

4. The composite insulator aging test device according to claim 3 is characterized in that: Stabilizing sleeves (26) are provided on both sides of the front end of the bottom of the lifting plate (12), and stabilizing rods (27) are provided on both sides of the front end of the bottom plate of the experimental cabin (3), respectively. The stabilizing sleeves (26) slide up and down along the stabilizing rods (27), and the sleeves (23) and the stabilizing rods (27) are fixed to the bottom plate of the experimental cabin (3) through a mounting frame plate (28). The drainage hole (17) is located on the inner side of the mounting frame plate (28), and an arc-shaped guide surface is provided on the inner periphery of the mounting frame plate (28).

5. The composite insulator aging test device according to claim 4, characterized in that: The lifting plate (12) and the lifting screw (22) are connected via a support structure (29), wherein the support structure (29) comprises a connecting frame (30) and a stabilizing plate (31), wherein the connecting frame (30) is arranged at the top of the lifting screw (22) and is connected to the stabilizing sleeve (26), and the stabilizing plate (31) is fixed to the rear end of the lifting plate (12) and moves vertically along the inner wall of the experimental chamber (3).

6. The composite insulator aging test device according to claim 5, characterized in that: First slide rails (32) are provided on both sides of the rear end of the inner wall of the experimental cabin (3), and first slide blocks (33) slidably matched with the first slide rails (32) are provided on both sides of the rear end of the stabilizing plate (31).

7. The composite insulator aging test device according to claim 1, characterized in that: The sliding door (4) is slidably connected to a second slide rail (35) on the experimental platform (1) via a second sliding block (34); the second slide rail (35) is arranged at the upper and lower edges of the opening of the experimental cabin (3).

8. The composite insulator aging test device according to claim 1, characterized in that: The lifting plate (12) is provided with a threaded rotating rod (36), the bottom of which is connected to a positioning clamp (37), and the inner wall of the positioning clamp (37) is provided with an anti-slip pad (38) for limiting the displacement of the end of the composite insulator.

9. The composite insulator aging test device according to claim 1, characterized in that: The lifting plate (12) is provided with an annular positioning groove (39), in which a plurality of partitions (40) are arranged to form a channel. When the lifting plate (12) is raised, the nozzle (8) passes through the channel and is aligned with the outer periphery of the composite insulator shed.

10. The composite insulator aging test device according to claim 1, characterized in that: A sealing rubber ring (41) is provided in the wire hole (7).

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