A lightning arrester detection device and a detection method thereof

Abstract

The application relates to the technical field of lightning arrester detection, in particular to a lightning arrester detection device and a detection method thereof, which comprises a workbench, the workbench is provided with a first three-dimensional linear module, a positioning unit, a leakage current detector and a second three-dimensional linear module, the first three-dimensional linear module is provided with a first clamp, and the second three-dimensional linear module is provided with a second clamp; a wiping unit is arranged on the first clamp, and a rotating unit is arranged on the workbench. The first three-dimensional linear module clamps the lightning arrester through the first clamp to feed the lightning arrester, the rotating unit drives the lightning arrester to rotate through the positioning unit, the wiping unit wipes the dirt on the lightning arrester, the leakage current detector detects the leakage current of the lightning arrester, and the second three-dimensional linear module drives the lightning arrester to be discharged through the second clamp. The application can realize the continuity of lightning arrester detection, thereby improving the electric performance detection efficiency of the lightning arrester.

Description

A surge arrester testing device and its testing method Technical Field

[0001] This application relates to the technical field of surge arrester testing, and in particular to a surge arrester testing device and testing method thereof. Background Technology

[0002] In the power sector, surge arresters are a crucial piece of equipment used to protect power systems from damage caused by lightning strikes and overvoltages.

[0003] As shown in Figure 1, the surge arrester 1 includes a main body 11, a wiring terminal 12, a grounding terminal 13, a base 14, and several skirts 15. The wiring terminal 12 is located at the upper end of the main body 11, the grounding terminal 13 is located at the lower end of the main body 11, the base 14 is located at the lower end of the grounding terminal 13, and the skirts 15 are arranged sequentially from top to bottom on the side of the main body 11.

[0004] Surge arresters will have leakage current problems under continuous operating voltage. Leakage current will cause the surge arrester to age continuously and reduce its performance. At this time, it is necessary to use a surge arrester leakage current detector to test the electrical performance of the surge arrester.

[0005] For surge arresters with high voltage levels, it is necessary to ensure that the arrester is at a specified height above ground before testing and to guarantee its stability during the testing process. Additionally, contamination on the arrester's surface can affect its safety during testing; therefore, the arrester must be cleaned before testing. In other words, the surge arrester testing process involves a series of operations: clamping, loading, cleaning, testing, and unloading. Current single-device systems cannot complete all these operations independently, failing to achieve continuous surge arrester testing and affecting the efficiency of electrical performance testing. Therefore, improvements are needed. Summary of the Invention

[0006] In order to enable continuous operation of surge arrester testing and thus improve the efficiency of surge arrester electrical performance testing, this application provides a surge arrester testing device and testing method.

[0007] In a first aspect, the surge arrester testing device provided in this application adopts the following technical solution: A surge arrester testing device includes a workbench, on which a first three-dimensional linear module, a positioning unit, a leakage current detector and a second three-dimensional linear module are provided. The moving end of the first three-dimensional linear module is provided with a first clamp for clamping and loading the surge arrester to the positioning unit. The leakage current detector is used to detect the surge arrester on the positioning unit. The moving end of the second three-dimensional linear module is provided with a second clamp for clamping and unloading the surge arrester on the positioning unit.

[0008] The first clamp is equipped with a wiping unit. When the first clamp is clamped on the surge arrester, the wiping unit will extend into the space between all two adjacent skirts of the surge arrester and abut against the opposite side of the two adjacent skirts.

[0009] The workbench is equipped with a rotating unit, which drives the positioning unit to rotate, thereby causing the surge arrester on the positioning unit to rotate.

[0010] Optionally, the first fixture includes:

[0011] The support is mounted on the moving end of the first three-dimensional linear module;

[0012] The pressure seat is connected to the bracket by a first elastic element that can extend and retract vertically;

[0013] Two clamping elements are connected to the bracket by a second elastic element that can extend laterally;

[0014] During the process of pressing down the surge arrester, the first elastic element will deform, causing the pressure base to gradually detach from the clamping element. At this time, the second elastic element will tend to return to its natural state, and the two clamping elements will jointly clamp the terminal and support the bottom of the terminal upward.

[0015] Optionally, the support includes:

[0016] The upper seat is located on the motion end of the first three-dimensional linear module;

[0017] The middle seat slides longitudinally into the upper seat;

[0018] The lower seat slides laterally into the middle seat;

[0019] The pressure seat is connected to the lower seat via a first elastic element, and the clamping element is connected to the lower seat via a second elastic element.

[0020] Optionally, the lower surface of the pressure seat is provided with a plurality of rollable balls, which protrude downward from the lower surface of the pressure seat.

[0021] Optionally, the wiping unit includes a dust removal hood and a dust suction hood respectively disposed on two clamping members. Both the dust removal hood and the dust suction hood are semi-cylindrical and can be combined to form a cylinder.

[0022] The dust cover is equipped with several wiping parts for extending between two adjacent skirts of the surge arrester.

[0023] Optionally, both the interior of the dust removal hood and the interior of the dust collection hood are hollow. The inner wall of the dust removal hood is provided with a number of air jets communicating with the interior of the dust removal hood, and the inner wall of the dust collection hood is provided with a number of dust outlets communicating with the interior of the dust collection hood.

[0024] The bracket is equipped with an air pump and a vacuum cleaner. The air pump is connected to the inside of the dust hood through an air inlet pipe, and the vacuum cleaner is connected to the inside of the dust hood through an air outlet pipe.

[0025] Optionally, it also includes a separation unit, which includes two first hydraulic cylinders mounted on the worktable, the piston cylinders of the first hydraulic cylinders extending horizontally and connected to a pull seat;

[0026] When the rotating unit drives the surge arrester to rotate via the positioning unit, the two pull seats will be located between the dust removal hood and the dust extraction hood. The first hydraulic cylinder can pull the dust removal hood and the dust extraction hood apart through the pull seats.

[0027] Optionally, the positioning unit includes a tray for placing the base, the tray being rotatably connected to the worktable around its own axis, and the tray being provided with a positioning sleeve for vertical insertion of the base.

[0028] Secondly, this application provides a surge arrester testing method, which adopts the following technical solution: A surge arrester testing method includes the following steps.

[0029] S1. Clamping: The first three-dimensional linear module drives the first clamp to clamp the surge arrester;

[0030] S2, Loading: The first three-dimensional linear module drives the surge arrester to move onto the positioning unit via the first clamp;

[0031] S3. Cleaning: The rotating unit drives the surge arrester to rotate through the positioning unit, and the wiping unit wipes the dirt on the surge arrester skirt.

[0032] S4. Material preparation: The first three-dimensional linear module drives the first clamp to disengage from the surge arrester on the positioning unit and prepares to clamp the next set of surge arresters.

[0033] S5. Detection: The leakage current detector performs leakage current detection on the surge arrester on the positioning unit.

[0034] S6. Unloading: The second three-dimensional linear module uses the second fixture to drive the surge arrester on the positioning unit to unload.

[0035] Optionally, the workbench is equipped with a controller and an alarm, and both the leakage current detector and the alarm are coupled to the controller;

[0036] Step S5 includes the following steps:

[0037] S51. When the leakage current detector value is not greater than the first threshold, the surge arrester is in normal condition, and the controller controls the green light of the warning device to turn on.

[0038] S51. When the leakage current detector value is greater than the first threshold and less than the second threshold, the surge arrester is in a warning state, and the controller controls the yellow light of the warning device to turn on.

[0039] S51. When the leakage current detector value is not less than the second threshold, the surge arrester is in maintenance status, and the controller controls the red light of the warning device to illuminate.

[0040] In summary, this application includes the following beneficial technical effects:

[0041] 1. During the surge arrester testing process, the first three-dimensional linear module moves the surge arrester to the positioning unit via the first clamp, and the wiping unit wipes the surge arrester on the positioning unit. After the surge arrester is wiped, the leakage current detector detects the leakage current of the surge arrester on the positioning unit. After the surge arrester testing is completed, the second three-dimensional linear module moves the surge arrester off the positioning unit via the second clamp. This application integrates a series of operations, including clamping, loading, cleaning, testing, and unloading, into a single testing device, realizing continuous operation of surge arrester testing and thus improving the efficiency of surge arrester electrical performance testing.

[0042] 2. When the two clamping plates are clamped together on the surge arrester, the second elastic element will cause the two clamping plates to be clamped together on the terminal block by its own elastic force. The middle seat can slide longitudinally relative to the upper seat, and the lower seat can slide laterally relative to the middle seat, so that the two clamping plates can be finely adjusted in position to ensure that the clamping plates can be accurately clamped on the surge arrester.

[0043] 3. During the cleaning process of the surge arrester, the rotating unit drives the surge arrester to rotate through the positioning unit, the wiping component wipes away the dirt on the side of the surge arrester, the air pump draws air into the dust removal hood through the air inlet pipe, and the air inside the dust removal hood is sprayed onto the skirt through the air jet, thereby blowing away the dirt on the skirt; the vacuum cleaner draws air from the dust removal hood through the air outlet pipe, creating a negative pressure inside the dust removal hood, and the dirty air in the cylinder is discharged through the dust outlet and collected by the vacuum cleaner; the combination of air dust removal and wiping cleaning improves the cleaning effect of dirt on the surface of the surge arrester. Attached Figure Description

[0044] Figure 1 is a schematic diagram of the structure of the surge arrester in the background art of this application;

[0045] Figure 2 is a schematic diagram of the detection device according to an embodiment of this application;

[0046] Figure 3 is a structural schematic diagram of the first three-dimensional linear module, the first fixture, and the wiping unit in an embodiment of this application;

[0047] Figure 4 is a schematic diagram of the structure of the first clamp and wiping unit in an embodiment of this application;

[0048] Figure 5 is a cross-sectional view of the first clamp and wiping unit according to an embodiment of this application;

[0049] Figure 6 is a schematic diagram of the structure of the first clamp according to an embodiment of this application;

[0050] Figure 7 is a structural schematic diagram of the pressure seat and clamping member according to an embodiment of this application;

[0051] Figure 8 is a structural schematic diagram of the bracket according to an embodiment of this application;

[0052] Figure 9 is an exploded structural diagram of the dust hood, dust extraction hood, and surge arrester according to an embodiment of this application;

[0053] Figure 10 is a schematic diagram of the structure of the dust removal hood according to an embodiment of this application;

[0054] Figure 11 is an exploded structural diagram of the wiping component according to an embodiment of this application;

[0055] Figure 12 is a schematic diagram of the positioning unit, rotating unit and first clamp in an embodiment of this application;

[0056] Figure 13 is a schematic diagram of the positioning unit, rotation unit and separation unit in an embodiment of this application;

[0057] Figure 14 is a cross-sectional structural schematic diagram of the positioning unit and the rotation unit in an embodiment of this application;

[0058] Figure 15 is a schematic diagram of the structure of the second three-dimensional linear module and the second fixture in an embodiment of this application.

[0059] Reference numerals: 1. Surge arrester; 11. Main body; 12. Wiring terminal; 13. Grounding terminal; 14. Base; 15. Umbrella skirt; 2. Workbench; 21. Roller; 22. Operating port; 23. Controller; 24. Warning device; 3. First three-dimensional linear module; 4. Positioning unit; 41. Tray; 42. Bearing; 43. Positioning sleeve; 5. Rotation unit; 51. Motor; 52. Drive gear; 53. Driven gear ring; 6. Leakage current detector; 7. Second three-dimensional linear module; 8. First clamp; 81. Bracket; 811. Upper seat; 812. Middle seat; 813. Lower seat; 82. Pressure seat; 821. 822. Receiving groove; 83. Ball bearing; 84. Clamping element; 85. Mounting base; 86. Moving base; 87. Clamping plate; 88. Limiting post; 89. Guide surface; 80. First elastic element; 81. Second elastic element; 92. Wiping unit; 93. Dust removal hood; 94. Air inlet; 95. Vacuum cleaner; 96. Air outlet; 97. Wiping element; 98. Air pump; 99. Inlet pipe; 90. Vacuum cleaner; 99. Outlet pipe; 10. Second clamp; 101. Support base; 102. Second hydraulic cylinder; 103. Clamping seat; 100. Separation unit; 1001. First hydraulic cylinder; 1002. Pulling seat. Detailed Implementation

[0060] The present application will be further described in detail below with reference to Figures 2-15.

[0061] This application discloses a surge arrester testing device. As shown in Figure 2, a surge arrester testing device includes a workbench 2. In this embodiment, the bottom of the workbench 2 is equipped with rollers 21 so that the workbench 2 can be moved to the surge arrester 1 to be tested.

[0062] As shown in Figures 2 and 3, the workbench 2 is equipped with a first three-dimensional linear module 3, a positioning unit 4, a leakage current detector 6, and a second three-dimensional linear module 7. The moving end of the first three-dimensional linear module 3 is equipped with a first clamp 8, and the first clamp 8 is equipped with a wiping unit 9. The moving end of the second three-dimensional linear module 7 is equipped with a second clamp 10.

[0063] During the testing of surge arrester 1, the first three-dimensional linear module 3 moves surge arrester 1 to the positioning unit 4 via the first clamp 8, and the wiping unit 9 wipes the surge arrester 1 on the positioning unit 4. After the surge arrester 1 is wiped, the leakage current detector 6 detects the leakage current of the surge arrester 1 on the positioning unit 4. After the surge arrester 1 is tested, the second three-dimensional linear module 7 moves the surge arrester 1 off the positioning unit 4 via the second clamp 10. This application integrates a series of operations such as clamping, loading, cleaning, testing, and unloading into the same testing device, realizing continuous operation of surge arrester 1 testing, thereby improving the testing efficiency of surge arrester 1.

[0064] As shown in Figures 3 and 4, the first clamp 8 includes a bracket 81, a pressure seat 82, and two clamping members 83. The bracket 81 is located on the moving end of the first three-dimensional linear module 3. The pressure seat 82 is connected to the bracket 81 through a first elastic member 84 that can extend vertically. The clamping members 83 are connected to the bracket 81 through a second elastic member 85 that can extend horizontally.

[0065] As shown in Figures 4 and 5, in this embodiment, the first elastic element 84 consists of two vertically arranged elastic telescopic rods. The fixed ends of the elastic telescopic rods are fixedly installed on the lower side of the bracket 81, and the telescopic ends of the elastic telescopic rods are fixedly connected to the upper surface of the pressure seat 82. The second elastic element 85 is a horizontally arranged spring. The two ends of the spring are fixedly connected to the bracket 81 and the clamping member 83, respectively. The clamping member 83 includes a mounting base 831, a movable base 832, and a clamping plate 833. A limiting post 834 is installed on the mounting base 831. The limiting post 834 slides horizontally through the bracket 81, so that the mounting base 831 can only move horizontally. The movable base 832 and the clamping plate 833 are both installed on the mounting base 831. The clamping plate 833 is arranged in an "L" shape.

[0066] Before the surge arrester 1 is clamped, the first elastic element 84 will be in a natural state and the second elastic element 85 will be in a compressed state, so that the two movable seats 832 are clamped together on the pressure seat 82.

[0067] During the clamping process of surge arrester 1, the first three-dimensional linear module 3 will drive the first clamp 8 to move to the surge arrester 1, and the first three-dimensional linear module 3 will drive the pressure seat 82 to press down on the surge arrester 1, so that the base 14 of the surge arrester 1 is pressed tightly to the ground, so that the surge arrester 1 remains stable. At this time, the first elastic element 84 will be gradually compressed, and the pressure seat 82 will rise relative to the clamping plate 833, so that the pressure seat 82 will gradually detach from the moving seat 832. At this time, the second elastic element 85 will tend to return to its natural state, the two moving seats 832 will approach each other, and the two clamping plates 833 will clamp the terminal 12 together, and the lower ends of the two clamping plates 833 will support the bottom of the terminal 12 upwards. At this time, the terminal 12 will be fixed in multiple directions to ensure the stability of the surge arrester 1 during the loading process.

[0068] As shown in Figures 6 and 7, it is worth noting that the two clamping plates 833 are both arc-shaped on their opposite sides, which allows the clamping plates 833 to fit more closely to the side of the terminal block 12. In addition, the two movable seats 832 are each provided with an upwardly inclined guide surface 835 on their opposite sides. As the pressure seat 82 rises relative to the movable seat 832, the downwardly inclined lower end of the pressure seat 82 will gradually abut against the guide surface 835. The sliding fit between the pressure seat 82 and the guide surface 835 prevents the two clamping plates 833 from rapidly impacting the terminal block 12.

[0069] As shown in Figures 6 and 8, during the clamping process of the surge arrester 1, the first clamp 8 inevitably has a slight misalignment with the surge arrester 1 on the horizontal plane, which makes it impossible for the two clamping plates 833 to accurately clamp the terminal 12. To solve the above problem, in this embodiment, the bracket 81 includes an upper seat 811, a middle seat 812 and a lower seat 813 arranged sequentially from top to bottom. The upper seat 811 is installed on the moving end of the first three-dimensional linear module 3. The middle seat 812 slides longitudinally on the lower surface of the upper seat 811, and the lower seat 813 slides laterally on the lower surface of the middle seat 812. The first elastic member 84 and the second elastic member 85 are both installed on the lower seat 813.

[0070] When the two clamping plates 833 are clamped together on the surge arrester 1, the second elastic element 85 will cause the two clamping plates 833 to be clamped together on the terminal 12 by its own elastic force. The middle seat 812 can slide longitudinally relative to the upper seat 811, and the lower seat 813 can slide laterally relative to the middle seat 812, so that the two clamping plates 833 can be finely adjusted in position to ensure that the clamping plates 833 can be accurately clamped on the surge arrester 1.

[0071] As shown in Figures 6 and 7, during the fine-tuning of the position of the clamping plate 833, the pressure seat 82 pressing against the terminal 12 will slide horizontally relative to the surge arrester 1. To ensure that the pressure seat 82 can slide smoothly and reduce the wear on the terminal 12, in this embodiment, the lower surface of the pressure seat 82 is provided with several receiving grooves 821. The receiving grooves 821 are hemispherical, and rolling balls 822 are rolled and embedded in the receiving grooves 821. The rolling balls 822 protrude downward from the lower surface of the pressure seat 82, so that the sliding friction between the pressure seat 82 and the terminal 12 is transformed into the rolling friction between the rolling balls 822 and the terminal 12, so that the pressure seat 82 can slide relative to the surge arrester 1 and reduce the wear on the terminal 12.

[0072] As shown in Figure 8, the sliding fit between the middle seat 812 and the upper seat 811, as well as the sliding fit between the lower seat 813 and the middle seat 812, are achieved through the sliding insertion of the dovetail block and the dovetail groove. During the process of the first clamp 8 driving the surge arrester 1 to feed, the surge arrester 1 will cause the dovetail block to press down against the groove wall of the dovetail groove due to its own weight, so that the upper seat 811, the middle seat 812 and the lower seat 813 are not easy to slide relative to each other, so as to ensure the stability of the surge arrester 1 during the feeding process.

[0073] As shown in Figures 9 and 10, the wiping unit 9 includes a dust removal hood 91 and a dust suction hood 92 respectively disposed on two mounting bases 831. Both the dust removal hood 91 and the dust suction hood 92 are semi-cylindrical. Several wiping parts 93 are installed on the left and right sides of the dust removal hood 91 in sequence from top to bottom.

[0074] After the first clamp 8 clamps the surge arrester 1, the dust removal hood 91 and the dust extraction hood 92 will together form a cylinder. The surge arrester 1 will be located inside the cylinder and will be arranged coaxially with the cylinder. The wiping component 93 will extend between the two adjacent umbrella skirts 15 of the surge arrester 1, and the wiping component 93 will abut against the opposite side of the two adjacent umbrella skirts 15. The workbench 2 is equipped with a rotating unit 5. During the process of the rotating unit 5 driving the surge arrester 1 to rotate through the positioning unit 4, the wiping component 93 will wipe the dirt on the side of the surge arrester 1. Through the rotation of the surge arrester 1, the wiping component 93 will achieve a complete cleaning of the umbrella skirts 15.

[0075] As shown in Figure 11, in this embodiment, the wiping component 93 includes a fixing seat installed inside the dust cover 91. The shape of the fixing seat is adapted to the gap between two adjacent umbrella skirts 15. The surface of the fixing seat is bonded with microfiber cloth, and the microfiber cloth is soaked with anhydrous ethanol. The pressure exerted by the wiping component 93 on the umbrella skirt 15 during the wiping process is no greater than 5 N / cm².

[0076] As shown in Figures 4 and 9, the interiors of both the dust removal hood 91 and the suction hood 92 are hollow. The inner wall of the dust removal hood 91 is provided with several air jets 911 that communicate with the interior of the dust removal hood 91, and the inner wall of the suction hood 92 is provided with several dust outlets 921 that communicate with the interior of the suction hood 92. An air pump 94 and a vacuum cleaner 95 are installed on the lower base 813. The air pump 94 is connected to the interior of the dust removal hood 91 through an air inlet pipe 941, and the vacuum cleaner 95 is connected to the interior of the suction hood 92 through an air outlet pipe 951.

[0077] During the cleaning process of surge arrester 1, the air pump 94 will introduce air into the dust removal hood 91 through the air inlet pipe 941. The air inside the dust removal hood 91 will be sprayed onto the umbrella skirt 15 through the air jet 911, thereby blowing away the dirt on the umbrella skirt 15. The vacuum cleaner 95 will draw air from the dust removal hood 92 through the air outlet pipe 951, so that a negative pressure is formed inside the dust removal hood 92. The air containing dirt in the cylinder will be discharged through the dust outlet 921 and collected by the vacuum cleaner 95. The combination of air dust removal and wiping cleaning improves the cleaning effect of dirt on the surface of surge arrester 1.

[0078] As shown in Figures 12 to 14, the positioning unit 4 includes a tray 41, which is rotatably connected to the worktable 2 via a bearing 42, so that the tray 41 is rotatably connected to the worktable 2 around its own axis; a positioning sleeve 43 is bolted to the upper surface of the tray 41. After the surge arrester 1 is loaded, the base 14 of the surge arrester 1 will be pressed against the upper surface of the tray 41, and the base 14 of the surge arrester 1 will be vertically inserted into the positioning sleeve 43, so that the surge arrester 1 remains stable for subsequent testing of the surge arrester 1.

[0079] The workbench 2 is provided with an operating port 22 that runs through the upper and lower surfaces of the workbench 2, so as to facilitate the wiring test of the surge arrester 1.

[0080] The rotating unit 5 includes a motor 51 mounted on the workbench 2. The output shaft of the motor 51 extends vertically and is fixedly fitted with a drive gear 52. A driven gear ring 53 meshes with the drive gear 52 and is fixedly fitted on the tray 41. The motor 51 can drive the driven gear ring 53 and the tray 41 to rotate via the drive gear 52. The tray 41 will drive the surge arrester 1 to rotate, so that the wiping member 93 can wipe the dirt off the surface of the surge arrester 1.

[0081] As shown in Figures 12 and 13, the workbench 2 is also provided with a separation unit 100. The separation unit 100 includes two first hydraulic cylinders 1001 installed on the workbench 2. The piston cylinder of the first hydraulic cylinder 1001 extends horizontally and is connected to a pull seat 1002.

[0082] When the tray 41 drives the surge arrester 1 to rotate, the two pull seats 1002 will be located between the dust removal hood 91 and the dust extraction hood 92. After the surge arrester 1 is cleaned, the two first hydraulic cylinders 1001 will start synchronously, so that the two pull seats 1002 move away from each other. The pull seats 1002 will pull the dust removal hood 91 and the dust extraction hood 92 to separate, so that the first clamp 8 can be detached from the surge arrester 1. At this time, the first clamp 8 can clamp the next set of surge arresters 1 for material preparation.

[0083] As shown in Figure 15, the second clamp 10 includes a support base 101 mounted on the moving end of the second three-dimensional linear module 7. Two second hydraulic cylinders 102 are mounted on the support base 101. The piston cylinders of the second hydraulic cylinders 102 extend horizontally and are connected to clamping seats 103, which are arranged in an "L" shape. The second hydraulic cylinders 102 are used to drive the clamping seats 103 to move horizontally, so that the two clamping seats 103 together clamp the terminals 12 of the surge arrester 1.

[0084] It is worth noting that since the position of the surge arrester 1 is not fixed before loading, the first clamp 8 needs to be finely adjusted in position to accurately clamp the surge arrester 1; while the position of the surge arrester 1 is fixed during the testing process, so the second clamp 10 does not need to be finely adjusted in position to accurately clamp the surge arrester 1.

[0085] The implementation principle of the surge arrester testing device in this application embodiment is as follows: During the testing process of surge arrester 1, the first three-dimensional linear module 3 will drive the first clamp 8 to move to the surge arrester 1, and the first three-dimensional linear module 3 will drive the pressure seat 82 to press down on the surge arrester 1. The pressure seat 82 will rise relative to the clamping plate 833 and gradually detach from the moving seat 832. The two moving seats 832 will approach each other, and the two clamping plates 833 will automatically make position fine adjustments and clamp together on the terminal 12. The lower ends of the two clamping plates 833 will support the bottom of the terminal 12 upwards.

[0086] Then, the first three-dimensional linear module 3 will drive the surge arrester 1 to move onto the tray 41 via the first clamp 8. The base 14 of the surge arrester 1 will be inserted downward into the positioning sleeve 43 and placed on the tray 41. The motor 51 will drive the tray 41 to rotate through the cooperation of the drive gear 52 and the driven gear ring 53, causing the surge arrester 1 to rotate. The wiping component 93 will wipe the dirt on the umbrella skirt 15 thoroughly. At the same time, the air pump 94 will intake air into the dust removal hood 91 through the air inlet pipe 941. The air inside the dust removal hood 91 will be sprayed onto the umbrella skirt 15 through the air jet 911, thereby blowing away the dirt on the umbrella skirt 15. The vacuum cleaner 95 will draw air from the dust removal hood 92 through the air outlet pipe 951, creating a negative pressure inside the dust removal hood 92. The air containing dirt in the cylinder will be discharged through the dust outlet 921 and collected by the vacuum cleaner 95.

[0087] After the surge arrester 1 is cleaned, the first three-dimensional linear module 3 will move the first clamp 8 away from the surge arrester 1, so that the first clamp 8 is ready to clamp the next set of surge arresters 1 to be tested. The worker will test the surge arrester 1 on the tray 41 through the leakage current detector 6. After the surge arrester 1 is tested, the second three-dimensional linear module 7 will drive the surge arrester 1 to be unloaded through the second clamp 10.

[0088] In summary, this application integrates a series of operations such as clamping, feeding, cleaning, testing and unloading into a single testing device, thereby realizing continuous testing of surge arrester 1 and improving the testing efficiency of surge arrester 1.

[0089] This application also discloses a surge arrester testing method. A surge arrester testing method includes the following steps:

[0090] S1, clamping: the first three-dimensional linear module 3 drives the first clamp 8 to clamp the surge arrester 1;

[0091] S2, Loading: The first three-dimensional linear module 3 drives the surge arrester 1 to move onto the positioning unit 4 via the first clamp 8;

[0092] S3. Cleaning: Rotating unit 5 drives surge arrester 1 to rotate via positioning unit 4, and wiping unit 9 wipes the dirt on the skirt 15 of surge arrester 1.

[0093] S4. Material preparation: The first three-dimensional linear module 3 drives the first clamp 8 to disengage from the surge arrester 1 on the positioning unit 4 and prepares to clamp the next set of surge arresters 1.

[0094] S5. Detection: The leakage current detector 6 performs leakage current detection on the surge arrester 1 on the positioning unit 4.

[0095] S6. Unloading: The second three-dimensional linear module 7 drives the surge arrester 1 on the positioning unit 4 to unload via the second clamp 10.

[0096] The workbench 2 is equipped with a controller 23 and an alarm 24. The first three-dimensional linear module 3, the second three-dimensional linear module 7, the air pump 94, the vacuum cleaner 95, the first hydraulic cylinder 1001, the second hydraulic cylinder 102, the motor 51, the leakage current detector 6 and the alarm 24 are all coupled to the controller 23.

[0097] Step S1 includes the following steps:

[0098] S11. The worker manually controls the first three-dimensional linear module 3 to move the first clamp 8 to the lightning arrester 1;

[0099] S12, controller 23 controls the first three-dimensional linear module 3 to drive the pressure seat 82 to press down the surge arrester 1, so that the pressure seat 82 gradually separates from the moving seat 832;

[0100] S13, the middle seat 812 slides longitudinally relative to the upper seat 811, and the lower seat 813 slides laterally relative to the middle seat 812, so that the two clamping plates 833 are slightly adjusted in position and clamp together on the terminal 12 of the surge arrester 1, and the lower ends of the two clamping plates 833 will support the bottom of the terminal 12 upward.

[0101] Step S2 includes the following steps:

[0102] S21. The contact sensor installed on the clamp 833 will contact the side of the terminal 12. The contact sensor will send a feeding signal to the controller 23. The controller 23 will control the movement of the first three-dimensional linear module 3, so that the first three-dimensional linear module 3 will drive the surge arrester 1 to be fed through the first clamp 8.

[0103] S22. The infrared rangefinder installed on the upper seat 811 obtains the x-axis coordinates of the middle seat 812 relative to the upper seat 811. The infrared rangefinder installed on the middle seat 812 obtains the y-axis coordinates of the lower seat 813 relative to the middle seat 812. The controller 23 senses the motion state of the first three-dimensional linear module 3 and obtains the spatial coordinates of the upper seat 811 relative to the first three-dimensional linear module 3. Combined with the spatial coordinate system established by the controller 23, the spatial coordinates of the surge arrester 1 relative to the positioning unit 4 are obtained. Then the controller 23 controls the movement of the first three-dimensional linear module 3, so that the first three-dimensional linear module 3 drives the surge arrester 1 to move accurately onto the tray 41 and insert it into the positioning sleeve 43 through the first clamp 8.

[0104] Step S3 includes the following steps:

[0105] S31, the contact sensor on the mounting tray 41 will be touched by the surge arrester 1. At this time, it indicates that the surge arrester 1 has been loaded. The contact sensor will send a cleaning signal to the controller 23. The controller 23 will control the motor 51, the air pump 94 and the vacuum cleaner 95 to be turned on for a specified time.

[0106] S32, the motor 51 will drive the tray 41 to rotate through the cooperation of the drive gear 52 and the driven gear ring 53, so that the surge arrester 1 will rotate.

[0107] S33, the air pump 94 will introduce air into the dust removal hood 91 through the air inlet pipe 941, and the air inside the dust removal hood 91 will be sprayed onto the umbrella skirt 15 through the air jet 911, blowing away the dirt on the umbrella skirt 15.

[0108] S34. The vacuum cleaner 95 will draw air from the vacuum hood 92 through the air outlet 951, so that a negative pressure is formed inside the vacuum hood 92. The dirty air in the cylinder will be discharged through the dust outlet 921 and collected by the vacuum cleaner 95.

[0109] S35, the wiping component 93 will come into contact with the opposite side of the two adjacent umbrella skirts 15 and wipe the dirt on the umbrella skirts 15 thoroughly.

[0110] Step S4 includes the following steps:

[0111] S41, motor 51, air pump 94 and vacuum cleaner 95 will automatically shut down after being turned on for a specified time. Controller 23 will control the first hydraulic cylinder 1001 to drive the pull seat 1002 to move. The two pull seats 1002 will move away from each other, so that the dust cover 91 and the suction cover 92 will separate from each other.

[0112] S42. The infrared sensor on the workbench 2 will detect the pull seat 1002 and send a material preparation signal to the controller 23. The controller 23 will control the first three-dimensional linear module 3 to drive the first clamp 8 to disengage from the surge arrester 1. The two moving seats 832 will be re-clamped on the pressure seat 82. The first clamp 8 will be ready to clamp the next set of surge arresters 1. The controller 23 will control the first hydraulic cylinder 1001 to drive the pull seat 1002 to move and reset.

[0113] Step S5 includes the following steps:

[0114] S51. When the leakage current detector 6 detects a value that is not greater than the first threshold, the surge arrester 1 is in normal condition, and the controller 23 controls the green light of the warning device 24 to turn on.

[0115] S51. When the leakage current detector 6 detects a value greater than the first threshold and less than the second threshold, the surge arrester 1 is in a warning state, and the controller 23 controls the yellow light of the warning device 24 to turn on.

[0116] S51. When the leakage current detector 6 detects a value not less than the second threshold, the surge arrester 1 is in maintenance mode, and the controller 23 controls the red light of the warning device 24 to illuminate.

[0117] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A surge arrester testing device, comprising a workbench, on which are mounted a first three-dimensional linear module, a positioning unit, a leakage current detector, and a second three-dimensional linear module. The moving end of the first three-dimensional linear module is provided with a first clamp for clamping and loading a surge arrester onto the positioning unit. The leakage current detector is used to detect the surge arrester on the positioning unit. The moving end of the second three-dimensional linear module is provided with a second clamp for clamping and unloading the surge arrester from the positioning unit. The first clamp is provided with a wiping unit; when the first clamp clamps the surge arrester, the wiping unit extends between all adjacent skirts of the surge arrester and abuts against the opposite side of the two adjacent skirts. A rotating unit is provided on the worktable to drive the positioning unit to rotate, thereby causing the surge arrester on the positioning unit to rotate. During the surge arrester testing process, the first three-dimensional linear module will move the surge arrester to the positioning unit via the first clamp, and the wiping unit will wipe the surge arrester on the positioning unit. After the surge arrester is wiped, the leakage current detector will detect the leakage current of the surge arrester on the positioning unit. After the surge arrester testing is completed, the second three-dimensional linear module will unload the surge arrester on the positioning unit via the second clamp. The first clamp includes a bracket, a pressure seat, and two clamping parts. The bracket is located on the moving end of the first three-dimensional linear module, and the pressure seat is connected to the moving end of the first three-dimensional linear module. The clamping component is connected to the support via a first elastic element that can extend vertically, and to the support via a second elastic element that can extend laterally. The first elastic element consists of two vertically arranged elastic telescopic rods, with the fixed ends of the elastic telescopic rods fixedly installed on the lower side of the support and the telescopic ends of the elastic telescopic rods fixedly connected to the upper surface of the pressure seat. The second elastic element is a horizontally arranged spring, with both ends of the spring fixedly connected to the support and the clamping component, respectively. The clamping component includes a mounting base, a movable base, and a clamping plate. A limit post is installed on the mounting base, and the limit post slides laterally through the support, allowing the mounting base to move only laterally. The movable base and the clamping plate are both installed on the mounting base, and the clamping plate is arranged in an "L" shape. Both clamping plates have an arc-shaped design on opposite sides, allowing them to fit more closely to the side of the terminal block. Additionally, both movable seats have upward-sloping guide surfaces on opposite sides. As the pressure seat rises relative to the movable seat, the downward-sloping lower end of the pressure seat gradually contacts the guide surface. This sliding fit between the pressure seat and the guide surface prevents the two clamping plates from rapidly impacting the terminal block. The bracket includes an upper seat, a middle seat, and a lower seat arranged sequentially from top to bottom. The upper seat is mounted on the moving end of the first three-dimensional linear module. The middle seat slides longitudinally against the lower surface of the upper seat, and the lower seat slides laterally against the lower surface of the middle seat. The first elastic element and the second elastic element are both mounted on the lower seat.During the fine-tuning of the clamping plate, the pressure seat pressed against the terminal block will slide horizontally relative to the surge arrester. The lower surface of the pressure seat is provided with several receiving grooves, which are hemispherical in shape, and rolling balls are embedded in the receiving grooves. The rolling balls protrude downward from the lower surface of the pressure seat, so that the sliding friction between the pressure seat and the terminal block is transformed into the rolling friction between the rolling balls and the terminal block, so that the pressure seat can slide relative to the surge arrester and reduce the wear on the terminal block. The wiping unit includes a dust removal hood and a dust suction hood respectively disposed on two clamping members. The dust removal hood and the dust suction hood are both semi-cylindrical and can be combined to form a cylinder. The dust removal hood is provided with several wiping parts for extending between two adjacent skirts of the surge arrester. It also includes a separation unit, which includes two first hydraulic cylinders disposed on the workbench. The piston cylinder of the first hydraulic cylinder extends horizontally and is connected to a pull seat. When the rotation unit drives the surge arrester to rotate through the positioning unit, the two pull seats will be located between the dust removal hood and the dust suction hood. The first hydraulic cylinder can pull the dust removal hood and the dust suction hood apart through the pull seats. ; 2. The surge arrester testing device according to claim 1, characterized in that: Both the dust removal hood and the dust collection hood are hollow. The inner wall of the dust removal hood has several air jets that connect to the inside of the dust removal hood, and the inner wall of the dust collection hood has several dust outlets that connect to the inside of the dust collection hood. The support is equipped with an air pump and a vacuum cleaner. The air pump is connected to the inside of the dust removal hood through an air inlet pipe, and the vacuum cleaner is connected to the inside of the dust collection hood through an air outlet pipe.

3. The surge arrester testing device according to claim 2, characterized in that: The positioning unit includes a tray for placing the base, the tray is rotatably connected to the workbench around its own axis, and the tray is provided with a positioning sleeve for vertical insertion of the base.

4. A method for testing a surge arrester, wherein the testing method uses the surge arrester testing device according to any one of claims 1-3, characterized in that: The process includes the following steps: S1, clamping: the first three-dimensional linear module drives the first clamp to clamp the surge arrester; S2, loading: the first three-dimensional linear module drives the surge arrester to move onto the positioning unit via the first clamp; S3, cleaning: the rotating unit drives the surge arrester to rotate via the positioning unit, and the wiping unit wipes the dirt off the surge arrester's skirt; S4, preparing: the first three-dimensional linear module drives the first clamp to detach from the surge arrester on the positioning unit and prepares to clamp the next set of surge arresters; S5, detection: the leakage current detector detects the leakage current of the surge arrester on the positioning unit; S6, unloading: the second three-dimensional linear module drives the surge arrester on the positioning unit to unload via the second clamp.

5. The surge arrester testing method according to claim 4, characterized in that: The workbench is equipped with a controller and an alarm. The leakage current detector and the alarm are both coupled to the controller. Step S5 includes the following steps: S51, when the detection value of the leakage current detector is not greater than the first threshold, the surge arrester is in normal condition, and the controller controls the green light of the alarm to illuminate; S52, when the detection value of the leakage current detector is greater than the first threshold and less than the second threshold, the surge arrester is in warning condition, and the controller controls the yellow light of the alarm to illuminate; S53, when the detection value of the leakage current detector is not less than the second threshold, the surge arrester is in maintenance condition, and the controller controls the red light of the alarm to illuminate.

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