Insulator discharge defect detection device

Abstract

The invention discloses an insulator discharge defect detection device, and relates to the technical field of insulator discharge defect detection devices, the insulator discharge defect detection device comprises an operation table, and also comprises a rotating disc which is rotatably arranged on the operation table, a plurality of groups of mounting assemblies are arranged on the circumference of the rotating disc, each mounting assembly is provided with a clamping assembly, and the clamping assemblies are arranged on the rotating disc; the clamping device is used for clamping an insulator on the turntable; the device comprises a rotating disc, a feeding station and a testing station, insulators are clamped on the rotating disc one by one on the feeding station, then the rotating disc rotates at intervals, and the insulators are rotated to the testing station one by one for discharging detection; three functions of surface bulge defect detection, internal defect discharge detection and umbrella skirt cleaning are integrated, the rubber plate and the position sensor are matched to realize surface bulge accurate judgment and test station discharge detection to troubleshoot internal bubbles / cracks, and meanwhile, the rubber plate rotates to clean umbrella skirt foreign matters, so that the foreign matters are prevented from interfering with discharge detection, and the detection efficiency is improved. And the detection integrity of the insulator is comprehensively ensured.

Description

Technical Field

[0001] This invention belongs to the technical field of insulator discharge defect detection devices, specifically, it relates to an insulator discharge defect detection device. Background Technology

[0002] In power systems, insulators, as core components ensuring the insulation performance of electrical equipment and the stable operation of the system, are widely used in critical scenarios such as transmission lines, substations, and GIS equipment. Their insulation condition directly determines the safety and reliability of power transmission. When insulators support transmission lines through support slots, if there are bubbles or protrusions on the surface of the insulator or if there are defects inside the insulator, such as bubbles, cracks, or foreign objects, partial discharge will occur. Therefore, defect sampling inspections are required for different batches of insulators before they leave the factory. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an insulator discharge defect detection device that can overcome or at least partially solve the above problems.

[0004] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: an insulator discharge defect detection device, including an operating table, and further including: a turntable, rotatably mounted on the operating table, the turntable having multiple sets of mounting components arranged circumferentially, each mounting component having a clamping component for clamping the insulator on the turntable; a loading station and a testing station, wherein the insulators are clamped one by one on the turntable at the loading station, and then the turntable rotates intermittently, moving the insulators one by one to the testing station for discharge detection; and a surface defect detection component, mounted on the mounting components, for detecting raised defects on the surface of the insulator.

[0005] Preferably, the mounting assembly includes a mounting plate and a horizontal plate connected to the mounting plate, wherein the angle between the horizontal plate and the mounting plate is degrees.

[0006] Preferably, the clamping assembly includes a connecting sleeve and a mounting base. A connecting shaft is fixedly connected to the connecting sleeve. The connecting shaft is slidably connected to a horizontal plate. A rotating ring is rotatably connected to the bottom surface of the horizontal plate. The rotating ring is sleeved on the connecting shaft. A spring is connected between the rotating ring and the connecting sleeve. An alignment groove is provided on the mounting base, and one end of the insulator is located in the alignment groove.

[0007] Preferably, a gear is installed at the top of the connecting shaft, and a turntable is rotatably connected in the alignment groove.

[0008] Preferably, an arc-shaped positioning block is installed on the side wall of the alignment slot for centering the insulator, and the two ends of the arc-shaped positioning block are provided with flanges.

[0009] Preferably, a bracket is installed on the operating table, and an internal gear ring is fixedly connected to the bracket. One end of the internal gear ring is located on one side of the feeding station, and the other end of the internal gear ring is close to the testing station.

[0010] Preferably, the surface defect detection assembly includes a slide rod slidably connected to a mounting plate. The end of the slide rod is connected to the mounting plate via a second spring. A third spring is installed at the front end of the slide rod. A connecting rod is fixedly connected to the end of the third spring away from the slide rod. Multiple rubber plates are fixedly connected at equal intervals on the connecting rod. The rubber plates correspond to the spacing layers between adjacent skirts on the insulator. When the rubber plate enters the spacing layer, the front end of the rubber plate is adjacent to the insulating column, and the upper and lower surfaces of the rubber plate are adjacent to the bottom and surface of the adjacent skirt, respectively. A position sensor is installed on the mounting plate, and the position sensor corresponds to the connecting rod to detect position fluctuations of the connecting rod.

[0011] Preferably, it includes a ring track mounted on a bracket on the operating table, one end of the ring track is provided with a starting end, the starting end converges toward the center of the turntable, the other end of the ring track is located on one side of the testing station, and an extension block is fixedly connected to the bottom surface of the starting end.

[0012] Preferably, the mounting plate is provided with a connecting block via a torsion spring, and the connecting block is mounted on the turntable.

[0013] Furthermore, the method for monitoring insulator defects using the position sensor includes: acquiring position data of the connecting rod in real time using the position sensor, calculating the position fluctuation value, comparing the position fluctuation value with a preset threshold range, and determining that the insulator has a protruding defect if the position fluctuation value exceeds the threshold range; specifically, the comparison method for the preset threshold range is as follows: the preset threshold range is [μ-3σ, μ+3σ], where μ is the average position fluctuation value of the connecting rod corresponding to the defect-free standard insulator, and σ is the standard deviation of the position fluctuation value of the connecting rod corresponding to the defect-free standard insulator; calculating the position fluctuation value Δx of the connecting rod corresponding to the insulator 3 to be tested in real time, and determining that the position fluctuation value exceeds the threshold range if Δx < μ-3σ or Δx > μ+3σ.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. This insulator discharge defect detection device integrates three major functions: surface protrusion defect detection, internal defect discharge detection, and shed cleaning. It uses a rubber plate and position sensor to accurately determine surface protrusions, discharge detection at the test station to check for internal bubbles / cracks, and the rotating rubber plate to clean foreign objects from the sheds, avoiding interference with discharge detection and ensuring the integrity of insulator testing in all aspects.

[0015] 2. This insulator discharge defect detection device features an arc-shaped positioning block and a flanged design to achieve automatic centering and skew correction of the insulator. The installation components connected by torsion springs can be adaptively flipped, and the ring track drives the rubber plate to approach for protection, which reduces the difficulty of clamping, improves the feeding efficiency, and avoids damage to the glass umbrella skirt. The elastic clamping structure is adaptable to insulators of different specifications, making it highly versatile.

[0016] 3. This insulator discharge defect detection device uses a stepper motor to drive the turntable to rotate intermittently, enabling continuous operation of feeding, cleaning, surface inspection, and discharge detection. The rotation and inspection of the insulator are carried out simultaneously, without the need for additional procedures. The single insulator inspection cycle is short, and it supports batch inspection, meeting the high-efficiency sampling inspection needs of power grid component production. Compared with traditional methods, the efficiency is significantly improved.

[0017] 4. This insulator discharge defect detection device, through the coordinated functions of protection, cleaning, and detection of the rubber plate, empowers and enhances the main function of discharge defect detection, achieving improvements from ensuring the prerequisites for detection to improving detection accuracy. During the clamping stage, the rubber plate automatically approaches the insulator as the installation components rotate, avoiding damage to the sheds through flexible contact, thus preventing hidden cracks, shed breakage, and other human-caused defects caused by clamping. During the rotation process, the rubber plate continuously rubs and cleans the rotating shed spacing layer, precisely removing dust, debris, and other foreign objects adhering to the surface, avoiding local electric field distortion caused by foreign objects, and preventing abnormal or inaccurate discharge detection results due to interference from foreign objects, ensuring the authenticity of discharge detection; detection During the bonding phase, the adhesive sheet flexibly integrates surface protrusions into quantifiable positional fluctuation signals. These signals are captured by position sensors and used to filter out insulators with surface defects. This process proactively eliminates substandard products where surface protrusions cause concentrated electric fields, reducing the workload of ineffective discharge detection and avoiding misjudgments caused by the superposition of surface and internal defects. It also provides a clear target for discharge detection to focus on internal defects (bubbles, cracks, etc.). Ultimately, through a progressive function of preconditioning, environmental purification, and targeted screening, the accuracy, efficiency, and reliability of discharge defect detection are enhanced, ensuring that the discharge detection results accurately reflect the internal insulation state of the insulator and provide high-quality insulation components for the power system.

[0018] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0019] In the attached diagram: Figure 1 This is a three-dimensional structural schematic diagram of an insulator discharge defect detection device proposed in this invention; Figure 2 This is a top view of an insulator discharge defect detection device proposed in this invention; Figure 3This is a schematic diagram of the support and turntable of an insulator discharge defect detection device proposed in this invention; Figure 4 This is a schematic diagram of the ring track and extension block of an insulator discharge defect detection device proposed in this invention. Figure 5 This is a schematic diagram of the mounting plate and horizontal plate of an insulator discharge defect detection device proposed in this invention. Figure 6 This is a schematic diagram of the torsion spring, slide bar, and connecting rod of an insulator discharge defect detection device proposed in this invention. Figure 7 This is a schematic diagram of the position sensor, adhesive plate, and spacing layer of an insulator discharge defect detection device proposed in this invention. Figure 8 Schematic diagram of disc-shaped suspension glass insulator Figure 1 ; Figure 9 Schematic diagram of disc-shaped suspension glass insulator Figure 2 .

[0020] In the diagram: 1. Control panel; 11. Turntable; 12. Support frame; 2. Mounting plate; 20. Horizontal plate; 21. Mounting base; 211. Alignment groove; 212. Turntable; 213. Arc-shaped positioning block; 214. Flanged edge; 22. Insulating pad; 23. Connecting block; 231. Torsion spring; 3. Insulator; 31. Insulating post; 32. Sheath; 33. Spacing layer; 4. Connecting sleeve; 41. Spring 1; 42. Rotary ring; 43. Connecting shaft; 44. Gear; 45. Internal gear ring; 5. Slide rod; 51. Spring 2; 52. Connecting rod; 53. Rubber plate; 54. Spring 3; 55. Position sensor; 6. Circular track; 61. Starting end; 62. Extension block; 7. Loading station; 8. Testing station. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 The technical solutions provided in the various embodiments of the present invention will be described in detail.

[0023] Example: Refer to Figures 1-7 An insulator discharge defect detection device, comprising: Basic component installation: The turntable 11 is rotatably mounted at the center of the operating table 1 via a bearing assembly, ensuring smooth and uninterrupted rotation. Its intermittent rotation drive mechanism (a combination of a stepper motor and a gearbox) is connected to the turntable 11, and the rotation interval is set (customizable based on discharge detection efficiency requirements). The operating table 1 is divided into a loading station 7 and a testing station 8, both distributed along the circumference of the turntable 11; the loading station 7 and testing station 8 are positioned adjacent to each other.

[0024] Mounting Components: Each mounting component consists of a mounting plate 2 and a horizontal plate 20, which are fixed to the mounting plate 2 at a 90-degree angle by welding or bolting. A connecting block 23 is mounted on the side of the mounting plate 2 via a torsion spring 231, and then fixed to the inner circumference of the turntable 11, so that each mounting component is evenly distributed along the circumference of the turntable 11 (the spacing angle is 45 degrees in this implementation, but can be set according to the diameter of the turntable 11).

[0025] Clamping Assembly: A sliding hole is made in the horizontal plate 20, and a bushing seat is installed in the sliding hole. The connecting shaft 43 passes through the bushing seat to ensure that the connecting shaft 43 can slide and rotate axially. A rotating ring 42 is rotatably set on the bottom surface of the horizontal plate 20. The rotating ring 42 is sleeved on the middle of the connecting shaft 43, and a spring 41 is fitted between the rotating ring 42 and the connecting sleeve 4, so that the connecting sleeve 4 has elastic buffering capacity and clamping capacity for the insulator 3. A set of arc-shaped positioning blocks 213 are installed in the alignment groove 211 of the mounting base 21. The arc-shaped positioning blocks 213 are semi-circular, with their openings facing the opening of the alignment groove 211. The ends of the arc-shaped positioning blocks 213 are provided with flanges 214. The function of the arc-shaped positioning blocks 213 is to enable the insulator 3 to automatically center itself, so that the insulator 3 remains perpendicular to the turntable 11 on the clamping assembly. The turntable 212 is rotatably mounted on the bottom of the alignment groove 211 via bearings. An anti-slip rubber pad is provided at the contact end between the turntable 212 and the insulator 3. A gear 44 is fixed at the top of the connecting shaft 43, and an internal gear ring 45 is fixed on the bracket 12 of the operating table 1. The tooth surface of the internal gear ring 45 meshes with the gear 44. One end of the internal gear ring 45 extends to the side of the loading station 7 (the position where the gear 44 begins to mesh), and the other end is close to the side of the testing station 8 (the end of the meshing between the gear 44 and the internal gear ring 45). The mounting base 21 is connected to the mounting plate 2, and an insulating pad 22 is provided between the mounting base 21 and the mounting plate 2. An insulating pad 22 is also provided on the contact surface between the mounting base 21 and the turntable 11. Furthermore, insulation issues have been considered in many aspects of the design of this device to ensure its safe operation.

[0026] A horizontal groove is made on the mounting plate 2, and the slide rod 5 is slidably installed in the groove. The end of the slide rod 5 is connected to the side wall of the mounting plate 2 through spring 2 51, so that the slide rod 5 has the ability to return to its original position. Spring 3 54 is fixed to the front end of the slide rod 5, and the other end of spring 3 54 is fixed to the connecting rod 52. Multiple rubber plates 53 are glued or bolted to the connecting rod 52 at equal intervals along its length. The number and spacing of the rubber plates 53 correspond one-to-one with the spacing layer 33 of the adjacent shed 32 of the insulator 3. The rubber plates 53 are made of flexible wear-resistant rubber material (thickness 0.5-1mm) to ensure that they can be smoothly inserted into the spacing layer 33 without damaging the surface of the insulator 3.

[0027] The circular track 6 is fixed on the bracket 12. The starting end 61 of the circular track 6 converges towards the center of the turntable 11. An extension block 62 is connected to the bottom surface of the starting end 61. The other end of the circular track 6 extends to one side of the test station 8. When the slide rod 5 reaches the test station 8, the slide rod 5 disengages from the circular track 6. The slide rod 5 drives the rubber plate 53 to reset and move away from the insulator 3.

[0028] When using this device, to clamp the insulator 3 onto the clamping assembly, insert one end of the insulator 3 into the insertion hole of the connecting sleeve 4, and push the connecting sleeve 4 upward. The connecting sleeve 4 compresses the spring 41, causing the connecting sleeve 4 to move upward. Then, push the lower end of the insulator 3 into the alignment groove 211, which is open at both ends, and position the lower end of the insulator 3 on the turntable 212. At this point, the insulator 3 is clamped onto the clamping assembly.

[0029] Reference Figure 2 There is an empty position on the turntable 11, where no installation components or clamping components need to be installed. By loading the material station 7, the clamping components on the turntable 11 are clamped one by one to complete the loading and clamping of the insulator 3. Test station 8 is equipped with a grounding terminal and a discharge contact clamp. The grounding terminal and the discharge contact clamp are driven to move back and forth in a linear motion by means of a cylinder, a linear screw slide, etc., and are driven to move closer to the turntable 11. During the test, the operator leaves the discharge detection area and operates the device by operating the control equipment. The turntable 11 rotates intermittently driven by a stepper motor. When the insulator 3 rotates to the test station 8, the grounding end first contacts the lower end of the insulator 3 to fix the mounting component (since the mounting component can rotate, it first contacts the lower end of the insulator 3 through the grounding end to avoid the mounting component flipping and making loose contact when the discharge contact clamp contacts the upper end of the insulator 3). The discharge contact clamp approaches the insulator 3 and contacts the upper end of the insulator 3, while the grounding end contacts the lower end of the insulator 3. Then, a specified voltage is applied to the insulator 3 to detect whether there is partial discharge (corresponding to internal defects), thereby determining whether the insulator 3 has defects. After a single insulator 3 is tested, the discharge contact clamp and the grounding end move away from the insulator 3, and then the turntable 11 rotates to move the next insulator 3 to be tested to the test station 8 to continue the testing.

[0030] This structural design supports mass production of insulator discharge defects, meets the needs of power grid component manufacturing, and effectively improves the efficiency of discharge defect detection compared to traditional testing methods.

[0031] Furthermore, referring to Figure 2 The mounting plate 2 and the mounting base 21 can be rotated by the torsion spring 231. This design allows the clamping assembly and the mounting assembly to be adaptively rotated according to the operator's actions when the insulator 3 is clamped on the clamping assembly, so as to facilitate inserting one end of the insulator 3 into the connecting sleeve 4 and to facilitate pushing the lower end of the insulator 3 into the alignment groove 211, thereby improving the detection efficiency.

[0032] Furthermore, the starting end 61 on the circular track 6 is located at the loading station 7. Since the starting end 61 converges towards the center of the turntable 11, the slide rod 5 does not contact the outer surface of the circular track 6 when it is at the loading station 7. However, when clamping the insulator 3, the rotation of the mounting assembly causes the slide rod 5 to move closer to the circular track 6. At this time, the slide rod 5 contacts the starting end 61 and the extension block 62 located on the bottom surface of the starting end 61, causing the slide rod 5 to be pushed, making the rubber plate 53 closer to the axis of the connecting sleeve 4. Therefore, through this action design, when clamping the insulator 3 at the loading station 7, the rubber plate 53 can be made closer to the axis of the connecting sleeve 4. The proximity of the insulator to the clamping assembly allows the rubber plate 53 to protect the insulator 3 during clamping, preventing collisions between the insulator 3 and the mounting plate 2. This effectively protects the clamping operation and the operator (since the sheds 32 of some insulator 3 products are made of glass, impacts can easily cause the sheds 32 to shatter, resulting in hidden cracks). Therefore, in the structural design of this device, the rubber plate 53 is automatically driven to approach the clamping assembly based on the clamping action and the trajectory of the action, providing the necessary protection during the clamping of the insulator 3.

[0033] Furthermore, after the insulator 3 is clamped at the loading station 7, the turntable 11 rotates, moving the position where the insulator 3 is clamped away from the loading station 7. In subsequent operations, the gear 44 will mesh with the internal gear ring 45, and during the rotation of the turntable 11, the gear 44 will drive the connecting shaft 43 to rotate on the horizontal plate 20. Since the insulator 3 is clamped between the connecting sleeve 4 and the turntable 212, the rotation of the connecting shaft 43 will also drive the insulator 3 to rotate. After the insulator 3 is clamped and leaves the loading station 7, the end of the slide rod 5 near the circular track 6 will continue to move along the circular track 6. The outer surface contact and the annular track 6 allow the slide rod 5 to change its position on the mounting plate 2, ensuring that the rubber plate 53 remains continuously adjacent to the insulator 3 and is located within the spacing layer 33. This design feature, combined with the rotation of the insulator 3, allows the rubber plate 53 to clean the sheds 32 of the insulator 3 during rotation, preventing foreign objects from remaining undetected on the sheds 32 and potentially causing abnormal discharges during subsequent discharge tests, leading to inaccurate detection. Before the insulator 3 reaches the test station 8, the slide rod 5 disengages from the annular track 6, and the rubber plate 53 moves away from the insulator 3, avoiding interference from the rubber plate 53 during discharge detection.

[0034] The arc-shaped positioning block 213 is designed to accurately position the insulator 3 when the lower end of the insulator 3 is pushed into the alignment groove 211, so that the insulator 3 remains vertical and avoids tilting, which would affect the subsequent rotational stability. In addition, in order to avoid the insulator 3 tilting during clamping, flanges 214 are set at both ends of the arc-shaped positioning block 213, which can automatically correct the insulator 3 during rotation without manual operation.

[0035] In one embodiment, refer to Figure 7 A position sensor 55 is installed on the mounting plate 2 at the position corresponding to the connecting rod 52. The position sensor can be a laser displacement sensor. The probe of the position sensor 55 corresponds to the back of the connecting rod 52 to ensure real-time detection of position changes of the connecting rod 52. A triangular block is installed on the back of the connecting rod 52 at the position corresponding to the position sensor 55. The face of the triangular block opposite to the position sensor 55 is inclined, so that the change in position of the connecting rod 52 can be more accurately detected.

[0036] The method for monitoring defects in insulator 3 using position sensor 55 includes: real-time acquisition of position data of connecting rod 52 using position sensor 55, calculation of position fluctuation value, comparison of position fluctuation value with a preset threshold range, and determination that insulator 3 has a protruding defect if the position fluctuation value exceeds the threshold range; specifically: the comparison method of the preset threshold range is: the preset threshold range is [μ-3σ, μ+3σ], where μ is the average position fluctuation value of connecting rod 52 corresponding to a defect-free standard insulator, and σ is the standard deviation of position fluctuation of connecting rod 52 corresponding to a defect-free standard insulator; real-time calculation of position fluctuation value Δx of connecting rod 52 corresponding to the insulator 3 to be tested, and determination that the position fluctuation value exceeds the threshold range if Δx < μ-3σ or Δx > μ+3σ; During the commissioning process, at least 50 standard insulators that have been manually inspected and confirmed to be free of defects are selected and installed one by one into the clamping assembly. The turntable 11 is then started to rotate. During this process, the insulator 3 rotates through the gear 44 and the internal gear ring 45. The position sensor 55 collects the position data of the connecting rod 52 corresponding to each standard insulator (sampling frequency 100Hz, 1000 sets of data are sampled for each insulator 3). For each group of standard insulators, calculate the fluctuation value of the position data (fluctuation value = maximum position value - minimum position value within the same insulator sampling period), count the fluctuation values ​​of 50 standard insulators, calculate the average value μ and standard deviation σ, set the preset threshold range as [μ-3σ, μ+3σ], and enter the threshold into the controller's detection program; During device operation, under the preload of spring 51, slide rod 5 pushes the rubber plate 53 on connecting rod 52 into the spacing layer 33 of insulator 3. The upper and lower surfaces and front end of rubber plate 53 are in contact with shed 32 and insulating post 31, respectively. If there are raised defects on the surface of insulator 3, they will push and squeeze rubber plate 53 from the side, which will be transmitted to connecting rod 52 through spring 54, causing the position of connecting rod 52 to shift. Position sensor 55 collects the position data of connecting rod 52 in real time and transmits it to controller. Controller calculates Δx according to: fluctuation value = real-time position - initial position (position when there are no defects), updates it every 10ms, and compares it with the preset threshold [μ-3σ, μ+3σ]. If Δx exceeds the threshold, controller immediately marks the insulator 3 as having surface defects and stores the defect position data. Therefore, through the designed structure of the rubber plate 53, this device can not only protect the insulator 3 during the clamping process, but also automatically clean the surface of the shed 32 during device operation to avoid the residue of foreign objects causing inaccurate discharge detection. It can also cooperate with the position sensor 55 to detect protruding defects in the insulator 3.

[0037] In another implementation, refer to Figure 8 , Figure 9This device can also test disc suspension glass insulators. During testing, the glass insulators are assembled to the length required by the device before testing, thus making it more widely used.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention.

Claims

1. An insulator discharge defect detection device, comprising an operating table (1), characterized in that, Also includes: A turntable (11) is rotatably mounted on the operating table (1). Multiple sets of mounting components are arranged around the circumference of the turntable (11). Each mounting component is equipped with a clamping component for clamping the insulator (3) onto the turntable (11). The loading station (7) and the testing station (8) are used to clamp the insulators (3) one by one on the turntable (11) at the loading station (7). Then the turntable (11) rotates intermittently to transfer the insulators (3) one by one to the testing station (8) for discharge detection. A surface defect detection component is provided on the mounting component for detecting raised defects on the surface of the insulator (3).

2. The insulator discharge defect detection device according to claim 1, characterized in that, The mounting assembly includes a mounting plate (2) and a horizontal plate (20) connected to the mounting plate (2), wherein the angle between the horizontal plate (20) and the mounting plate (2) is 90 degrees.

3. The insulator discharge defect detection device according to claim 2, characterized in that, The clamping assembly includes a connecting sleeve (4) and a mounting base (21). A connecting shaft (43) is fixedly connected to the connecting sleeve (4). The connecting shaft (43) is slidably connected to the horizontal plate (20). A rotating ring (42) is rotatably connected to the bottom surface of the horizontal plate (20). The rotating ring (42) is sleeved on the connecting shaft (43). A spring (41) is connected between the rotating ring (42) and the connecting sleeve (4). An alignment groove (211) is provided on the mounting base (21). One end of the insulator (3) is located in the alignment groove (211).

4. The insulator discharge defect detection device according to claim 3, characterized in that, A gear (44) is installed at the top of the connecting shaft (43), and a turntable (212) is rotatably connected in the alignment groove (211).

5. The insulator discharge defect detection device according to claim 4, characterized in that, An arc-shaped positioning block (213) is installed on the side wall of the alignment groove (211) for centering the insulator (3). The two ends of the arc-shaped positioning block (213) are provided with flanges (214).

6. The insulator discharge defect detection device according to claim 4, characterized in that, A bracket (12) is installed on the operating table (1), and an internal gear ring (45) is fixedly connected on the bracket (12). One end of the internal gear ring (45) is located on the side of the loading station (7), and the other end of the internal gear ring (45) is close to the testing station (8).

7. The insulator discharge defect detection device according to claim 1, characterized in that, The surface defect detection assembly includes a slide rod (5) slidably connected to the mounting plate (2). The end of the slide rod (5) is connected to the mounting plate (2) via a spring (51). A spring (54) is installed at the front end of the slide rod (5). A connecting rod (52) is fixedly connected to the end of the spring (54) away from the slide rod (5). Multiple rubber plates (53) are fixedly connected at equal intervals on the connecting rod (52). The rubber plates (53) correspond to the spacing layer (33) between adjacent skirts (32) on the insulator (3). When the rubber plate (53) enters the spacing layer (33), the front end of the rubber plate (53) is adjacent to the insulating column (31), and the upper and lower surfaces of the rubber plate (53) are adjacent to the bottom and surface of the adjacent skirts (32), respectively. A position sensor (55) is installed on the mounting plate (2). The position sensor (55) corresponds to the connecting rod (52) and is used to detect the position fluctuation of the connecting rod (52).

8. The insulator discharge defect detection device according to claim 7, characterized in that, Includes a ring track (6) mounted on a bracket (12) on the operating table (1). One end of the ring track (6) is provided with a starting end (61), which converges toward the center of the turntable (11). The other end of the ring track (6) is located on one side of the test station (8). An extension block (62) is fixedly connected to the bottom surface of the starting end (61).

9. The insulator discharge defect detection device according to claim 8, characterized in that, The mounting plate (2) is provided with a connecting block (23) via a torsion spring (231), and the connecting block (23) is mounted on the turntable (11).

10. The insulator discharge defect detection device according to claim 7, characterized in that, The method for monitoring defects in insulators (3) using the position sensor (55) includes: The position data of the connecting rod (52) is collected in real time by the position sensor (55), the position fluctuation value is calculated, and the position fluctuation value is compared with the preset threshold range. If the position fluctuation value exceeds the threshold range, it is determined that the insulator (3) has a protrusion defect. Specifically: The comparison method of the preset threshold range is as follows: The preset threshold range is [μ-3σ,μ+3σ], where μ is the average position fluctuation of the connecting rod (52) corresponding to the flawless standard insulator (3), and σ is the standard deviation of the position fluctuation of the connecting rod (52) corresponding to the flawless standard insulator (3); The position fluctuation value Δx of the connecting rod (52) corresponding to the insulator (3) to be tested is calculated in real time. If Δx < μ-3σ or Δx > μ+3σ, the position fluctuation value is determined to be outside the threshold range.

Images