Insulator pollution flashover monitoring device and method

Abstract

The invention discloses an insulator pollution flashover monitoring device and method, and relates to the technical field of online monitoring and fault diagnosis of high-voltage power equipment. The monitoring unit comprises a fixing piece, a hanging piece arranged on the fixing piece, a swing arm rotationally arranged on the fixing piece and detection assemblies arranged on the swing arm at intervals in the length direction of the swing arm; the visual acquisition module is arranged on the unmanned aerial vehicle; the hanging piece is detachably connected with the unmanned aerial vehicle, the fixing piece is used for being detachably and fixedly connected with an insulator, the swing arm is in driving connection with a driving piece, the driving piece can drive the swing arm to swing around a first axis, and the first axis is perpendicular to a second axis of the insulator to be detected. The detection environment of the electric field probe is less affected by the surrounding insulator chain, so that the obtained monitoring data is more representative, and the monitoring result is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of online monitoring and fault diagnosis of high-voltage power equipment, and in particular to an insulator pollution flashover monitoring device and method. Background Art

[0002] Insulators are an insulating component of overhead lines that provide support for transmission cables and insulate between cables and wire racks.

[0003] During the use of insulators, aging and contamination may cause pollution flashover. If the pollution flashover lasts too long and the current is too large, it will cause transmission line failure. Therefore, technicians and scientific research institutions have invested a lot of research on pollution flashover monitoring of insulators. There are many ways to monitor pollution flashover. Common monitoring methods include monitoring leakage current and monitoring the electric field near the insulator to monitor pollution flashover.

[0004] For example, Chinese invention patent application number 2023116318827 discloses a system and method for monitoring the operating status of overhead line insulators. This system employs electric field probes positioned on the crossarms of the line frame at a certain distance from the insulators to monitor the electric field near the insulators, thereby detecting flashover. However, in actual application, this system has been found to have at least the following problems: 1. Due to the extension direction of the cross arm of the line frame, more than one transmission line will be erected, and each transmission line will be equipped with an insulator string. When two electric field probes are set along the cross arm, the electric field around the other insulator string will interfere with the monitoring environment of the electric field probe and affect the monitoring results.

[0005] 2. In the above-mentioned method, the electric field probe is fixedly installed on the cross arm of the wire rack to monitor the insulator in real time, which can achieve good monitoring effect. However, a corresponding system needs to be configured on each insulator, which is costly. In addition, when a system component fails, maintenance is very difficult due to the long installation distance of the wire rack.

[0006] 3. When the insulator string is in an approximately vertical state, the electric field probe only needs to be set directly below the cross arm. However, when the insulator string is used to apply tension to the end of the transmission cable, the insulator string is approximately in a horizontal state. At this time, if the electric field probe is only set below the cross arm, it cannot correspond to the position of the insulator string, the detection effect is poor, and an additional auxiliary bracket is required, which further increases the installation cost and makes the installation more inconvenient.

[0007] With the development of science and technology, technologies that use drones to assist in detecting insulator-related parameters have emerged in recent years. For example, Chinese invention patent application number 2023116853094 discloses a drone-based transmission line zero absolute value insulator live detection device and method, which combines drones to perform zero absolute value detection on insulators.

[0008] Based on this, we hope to develop a device that can monitor insulator flashover with the help of drones. Summary of the Invention

[0009] The purpose of the present invention is to solve the above problems and provide an insulator pollution flashover monitoring device and method.

[0010] To achieve the above object, the technical solution of the present invention is: an insulator flashover monitoring device, comprising: drones; The monitoring unit includes a fixing member, a hanging member provided on the fixing member, a swing arm rotatably provided on the fixing member, and detection components provided on the swing arm at intervals along the length direction of the swing arm; A visual acquisition module is installed on the drone; The hanging part is detachably connected to the drone, the fixing part is used to be detachably fixedly connected to the insulator, the swing arm drive is connected to a driving part, and the driving part can drive the swing arm to swing around a first axis, the first axis is perpendicular to the second axis of the insulator to be inspected, and the length direction of the swing arm is perpendicular to the first axis.

[0011] Furthermore, the fixing members include two fixed members arranged at intervals, a power telescopic rod is provided between the two fixing members, and the telescopic direction of the power telescopic rod is perpendicular to the first axis.

[0012] Furthermore, each of the fixing members is provided with a hanging member, and the UAV is provided with two winches connected to the two hanging members in a one-to-one correspondence.

[0013] Furthermore, the fixing member includes a bearing plate; the hanging member is provided on a first surface of the bearing plate, and a locking member is further provided on the first surface along the swing path of the swing arm; A first limiting surface is provided on the first surface, a detection sensor is provided on the first limiting surface, and the locking member is connected to the detection sensor.

[0014] Furthermore, the locking member is an electric telescopic rod, and the swing arm is provided with a locking hole adapted to the locking member.

[0015] Furthermore, the fixing member includes: Loading plate; An articulated frame is provided on the second surface of the carrying plate and is hingedly connected to two oppositely arranged clamping jaws; The linear telescopic member is arranged on the bearing plate and the second surface, the first surface and the second surface are opposite to each other, and is drivingly connected to the two clamping claws.

[0016] Furthermore, the clamping claw is drivingly connected to a linkage claw; The supporting plate is provided with a guide rod, the lower end of the guide rod is provided with a first driving plate, the lower surface of the first driving plate is slidably matched with the two linkage claws, and the upper end of the guide rod is drivingly connected to the linear telescopic member.

[0017] Furthermore, the upper end of the guide rod is connected to a second driving plate, and the second driving plate is provided with a connecting rod; The hanging part includes a column that cooperates with the guide of the supporting plate, a locking rod is provided in the guide of the supporting plate, and a locking groove is provided on the outer peripheral surface of the connecting rod; along the direction from the second surface to the first surface, the column includes a third section - and a first section - that are adapted to the locking rod; the radius of the third section - is smaller than that of the first section -.

[0018] Furthermore, the end of the third section extending out from the second surface is provided with a second limiting surface, and a first compression spring is provided between the second limiting surface and the second surface.

[0019] The present application also provides an insulator pollution flashover monitoring method, which uses any of the above-mentioned detection devices and includes the following steps: Step 1: Connect the drone to the monitoring unit and put the swing arm in the retracted position; Step 2: Control the drone to take off above the insulator string, collect image information of the insulator string through the visual acquisition module, determine the position of the insulator string, and place the monitoring unit directly above the insulator string; Step 3: Control the monitoring unit to descend so that the monitoring unit falls onto the insulator; Step 4: Fix the drone to the insulator through the fixing parts; then release the drone to the monitoring unit and return to the base; Step 5: The swing arm swings to the working state, the detection component is started, and the insulator is monitored online; Step 6: After the monitoring is completed, the swing arm returns to the storage state, the drone is connected to the monitoring unit, the fixing parts release the insulator, and the monitoring unit is recovered.

[0020] The insulator flashover monitoring device and method disclosed in the present invention have the following beneficial effects compared with the prior art: 1. Since the drone releases the monitoring unit from top to bottom, it can be placed directly above the insulator string and can be used with insulator strings that are in a nearly horizontal position. After the monitoring unit is fixedly connected to the insulator string, the swing arm swings 90 degrees, allowing two or more electric field probes installed on the swing arm to move radially away from the insulator string. Because the swing arm extends upward away from the insulator string, it will not tilt toward adjacent insulator strings. Therefore, the detection environment of the electric field probes is less affected by the surrounding insulator strings, making the acquired monitoring data more representative and the monitoring results more accurate. 2. The monitoring unit is lifted and lowered by a drone. The monitoring unit is detachably and fixedly connected to the insulator string, so the insulator strings can be monitored one by one. There is no need to configure a monitoring system for each insulator string, which reduces monitoring costs and eases maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a schematic diagram of the overall structure of an insulator pollution flashover monitoring device of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of an insulator flashover monitoring device hidden in a drone. Figure 1 .

[0023] Figure 3 This is a schematic diagram of the structure of an insulator flashover monitoring device hidden in a drone. Figure 2 .

[0024] Figure 4 The figure is a schematic structural diagram of an insulator flashover monitoring device in use according to the present invention.

[0025] Figure 5 The structure of the monitoring unit in the insulator flashover monitoring device of the present invention is shown in FIG. Figure 1 .

[0026] Figure 6 The structure of the monitoring unit in the insulator flashover monitoring device of the present invention is shown in FIG. Figure 2 .

[0027] Figure 7 The figure is a schematic structural diagram of a swing arm in an insulator pollution flashover monitoring device according to the present invention.

[0028] Figure 8 for Figure 5 The figure shows a schematic diagram of the partially enlarged structure of point A in an insulator flashover monitoring device of the present invention.

[0029] Figure 9 This is a schematic diagram of the structure of the first plate in an insulator flashover monitoring device of the present invention. Figure 1 .

[0030] Figure 10 for Figure 9 The figure shows a schematic diagram of the partially enlarged structure of point B in an insulator flashover monitoring device of the present invention.

[0031] Figure 11 This is a schematic diagram of the structure of the first plate in an insulator flashover monitoring device of the present invention. Figure 2 .

[0032] Figure 12 for Figure 11 The figure shows a schematic diagram of the partially enlarged structure of position C in an insulator flashover monitoring device of the present invention.

[0033] Figure 13 The figure is a schematic cross-sectional structural diagram of a first plate in an insulator pollution flashover monitoring device according to the present invention.

[0034] Figure 14 for Figure 13 The figure shows a schematic cross-sectional structure diagram of D in an insulator flashover monitoring device of the present invention.

[0035] Figure 15 for Figure 14 The figure shows a schematic cross-sectional structure diagram of a D-1 portion of an insulator flashover monitoring device according to the present invention.

[0036] Figure 16 for Figure 13 The figure shows a schematic cross-sectional structure diagram of point E in an insulator flashover monitoring device of the present invention.

[0037] In the figure: 1, UAV; 10, horizontal slide; 11, winch; 110, winch rope; 111, electric gripper; 2, visual acquisition module; 3, monitoring unit; 31, attachment; 31-1, first section; 31-2, connecting section; 31-3, third section; 31a, support arm; 31a-1, pin; 31b, swing rod; 31b-1, drive end; 31c, pull rope; 310, column; 3 11. Edge plate; 312. Rigid plate; 313. First compression spring; 32. Fixing member; 32a. First plate; 32a-1. First ear plate; 32a-2. Insulating pad; 32a-5. First guide hole; 32a-6. Second guide hole; 32b. Second plate; 32b-1. Support member; 320. Clamping jaw; 3201. Second ear plate; 3202. Swing shaft; 3203. Linking jaw; 321 , articulated frame; 3210, first drive motor; 3211, rotating shaft; 322, linear telescopic member; 3220, third drive plate; 323, first drive plate; 324, guide rod; 325, second drive plate; 3251, connecting rod; 3252, locking groove; 33, swing arm; 330, drive member; 3301, output shaft; 332, locking member; 331, strip hole; 333, sensor; 3 331. First limiting surface; 335. Locking hole; 336. Key sleeve; 34. Detection assembly; 340. Plate; 341. Screw; 342. Nut; 343. Positioning protrusion; 35. Power telescopic member; 37. Rigid rod; 371. Flange; 372. Second compression spring; 373. Third compression spring; 38. Locking rod; 381. Locking end; 382. Shaft end; 383. Conical surface; 9. Insulator string. DETAILED DESCRIPTION

[0038] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner, and thus only show components related to the present invention.

[0039] Example 1 Please refer to Figure 1-5 As a specific embodiment, the present invention provides an insulator pollution flashover monitoring device, comprising: Drone 1; The monitoring unit 3 includes a fixing member 32, a hanging member 31 provided on the fixing member 32, a swing arm 33 rotatably provided on the fixing member 32, and detection components 34 provided on the swing arm 33 at intervals along the length direction of the swing arm 33; A visual acquisition module 2 is provided on the drone 1; The hanging part 31 is detachably connected to the drone 1, the fixing part 32 is used to be detachably fixedly connected to the insulator, and the swing arm 33 is driven by a driving part 330, and the driving part 330 can drive the swing arm 33 to swing around a first axis. The first axis is perpendicular to the second axis of the insulator to be detected, and the length direction of the swing arm 33 is perpendicular to the first axis.

[0040] Specifically, the specific structure of an insulator flashover monitoring device provided by this application is as follows: Figure 1 、 Figure 2 , including a drone 1 and a monitoring unit 3. A winch 11 is mounted below the drone 1. A stranded wire is wound around the winch 11. An electric clamp 111 is provided at the lower end of the stranded wire. The drone 1, the winch 11 and the electric clamp 111 all adopt existing technologies and are remotely controlled. Their specific structures are not described one by one here. By providing the electric clamp 111, the attachment 31 can be attached. When the drone 1 is hovering, the monitoring unit 3 can be raised and lowered by retracting and extending the winch 11. After the monitoring unit 3 is connected to the insulator string 9, the electric clamp 111 is controlled to be released, thereby separating from the monitoring unit 3.

[0041] The monitoring unit 3 includes a fixing member 32, which can be fixedly connected to one of the insulators of the insulator string 9. A swing arm 33 is rotatably provided on the fixing member 32. Figure 1-Figure 3 , is a structural diagram of the swing arm 33 in the retracted state. At this time, when the fixing member 32 is connected to the insulator string 9, the length direction of the swing arm 33 is parallel to the length direction of the insulator string 9, and the first axis is in a horizontal state. After the monitoring unit 3 is connected to the insulator string 9, the drone 1 is controlled to separate from the monitoring unit 3, and then the driving member 330 is controlled to drive the swing arm 33 to rotate, so that the swing arm 33 switches to the position aligned with the insulator string 9. Figure 4In the working state shown, the length direction of the swing arm 33 is perpendicular to the length direction of the insulator string 9. Then the state of the swing arm 33 is locked, and the electric field around the insulator is detected by the detection component 34 arranged on the swing arm 33. It should be noted that the monitoring component is an electric field probe, and an internal circuit connected to the electric field probe is arranged on the fixing part 32, so as to perform online monitoring, wherein the electric field probe and the internal circuit both adopt existing technology. After monitoring for a period of time, the current working condition of the insulator string 9 is obtained, and the monitoring is completed. The swing arm 33 is controlled to return to the storage state, and then returned to the top of the monitoring unit 3 through the drone 1, and the electric clamp 111 is used to clamp the hanging part 31 of the monitoring unit 3, and then the fixing part 32 is controlled to separate from the insulator string 9, and the monitoring unit 3 is lifted and returned by the drone 1. Through this setting, when the drone 1 releases the monitoring unit 3, it is released from top to bottom, and cooperates with the visual acquisition module 2 to collect the insulator string below. 9 image information, after being collected, is fed back to the control terminal, so that the operator can adjust the position of the drone 1 so that the monitoring unit 3 can be placed directly above the insulator string 9, and can be adapted to the use of the insulator string 9 in a state that is approximately horizontal. After the monitoring unit 3 is fixedly connected to the insulator string 9, the swing arm 33 is swung 90 degrees, so that two or more electric field probes arranged on the swing arm 33 can be radially away from the insulator string 9. Since the swing arm 33 extends upward away from the insulator string 9, it will not tilt toward the direction of the adjacent insulator string 9. Therefore, the detection environment of the electric field probe is less affected by the surrounding insulator strings 9, thereby making the acquired monitoring data more representative and the monitoring results more accurate. On the other hand, the monitoring unit 3 is raised and lowered by the drone 1, and the monitoring unit 3 is detachably fixedly connected to the insulator string 9, so that the insulator strings 9 can be monitored one by one, without configuring a monitoring system for each insulator string 9, thereby reducing the monitoring cost and the difficulty of maintenance, and facilitating maintenance.

[0042] Furthermore, it should be noted that the visual acquisition module 2 used in this application is a camera, and its working mode and data processing all adopt existing technologies, which will not be described one by one here, and those skilled in the art should understand.

[0043] Furthermore, the specific structure of the fixing member 32 used in this application is referred to below.

[0044] Further, as a specific embodiment, refer to Figure 5 、 Figure 6 The fixing members 32 include two fixed members 32 that are spaced apart from each other. A power telescopic rod is provided between the two fixing members 32 , and the telescopic direction of the power telescopic rod is perpendicular to the first axis.

[0045] As a preferred embodiment, the fixing members 32 include two, and the two fixing members 32 are connected by a power telescopic rod. The power telescopic rod adopts an electric telescopic rod. Through this setting method, the power telescopic rod can adjust the distance between the two fixing members 32 by telescoping, so that the two fixing members 32 correspond to the two insulators on the insulator string 9. The two fixing members 32 can be fixedly connected to the two insulators to improve the stability of the connection. After being connected to the insulator string 9 through the two fixing members 32, the power telescopic rod is parallel to the length direction of the insulator string 9. When the swing arm 33 is set, the swing arm 33 is parallel to the length direction of the power telescopic rod in the retracted state, which can ensure that the swing arm 33 is parallel to the insulator string 9, which is more conducive to the state positioning of the swing arm 33.

[0046] Example 2 The present invention provides an insulator flashover monitoring device. When the monitoring unit 3 is provided with two fixing members 32, each fixing member 32 is provided with a hanging member 31, and the drone 1 is provided with two winches 11 connected to the two hanging members 31 in a one-to-one correspondence. Figure 1 、 Figure 5 、 Figure 6 When the monitoring unit 3 is provided with two fixing parts 32, a hanging part 31 is provided on each of the two fixing parts 32. Correspondingly, a horizontal slide 10 is provided under the drone 1, and two winches 11 are provided on the guide of the horizontal slide 10. A driving device is provided between each winch 11 and the slide, and the driving device can drive the winch 11 to move on the slide. The two winches 11 are connected to the two hanging parts 31 in a one-to-one correspondence. Through this setting, the two winches 11 can operate independently and control the lifting amount independently. When the insulator string 9 is in an inclined state, the lifting amount of the two winches 11 can be controlled to make the monitoring unit 3 in an inclined state parallel to the insulator string 9, and then the two winches 11 are controlled to descend synchronously, so as to ensure that the two fixing parts 32 are effectively fixed to the insulator string 9; on the other hand, by setting the winch 11 to slide horizontally, the distance between the two winches 11 can be adjusted according to the distance between the two fixing parts 32 to avoid oblique pulling.

[0047] It should be noted that the driving device arranged between the winch 11 and the slideway may include a rack arranged on the slideway along the length of the slideway and a driving motor arranged on the winch 11. The output shaft 3301 of the driving motor is provided with a gear meshing with the rack, thereby achieving the purpose of driving the winch 11 to move on the slideway. The above method is a commonly used linear driving method, and other structures that can achieve driving can be selected between the winch 11 and the slideway. It is not specifically limited here, and any driving method in the existing technology that can achieve the above function can be adopted.

[0048] Example 3 The present invention provides an insulator flashover monitoring device, as a specific embodiment, referring to Figure 9 , the fixing member 32 includes a bearing plate; the hanging member 31 is provided on the first surface of the bearing plate, along the swing path of the swing arm 33, and a locking member 332 is also provided on the first surface; Located on one side of the driving member 330, a first limiting surface 3331 is provided on the first surface, and a detection sensor 333 is provided on the first limiting surface 3331. The locking member 332 is connected to the detection sensor 333. When the swing arm 33 abuts against the first limiting surface 3331, the swing arm 33 is in a state perpendicular to the first axis and the second axis.

[0049] Specifically, refer to Figure 5 、 Figure 6 The bearing plate is the first plate 32a and the second plate 32b, both of which are rigid plates 312 and can be made of steel plates or aluminum alloy plates. The two fixing members 32 have basically the same structure and are respectively arranged on the first plate 32a and the second plate 32b. The first plate 32a and the second plate 32b are both provided with ceramic insulating pads 32a-2. The two ends of the power telescopic member 35 are respectively connected to the first plate 32a and the second plate 32b, and are insulated from the power telescopic member 35 through the insulating pads 32a-2 to improve safety. A first ear plate 32a-1 is provided on the first surface of the first plate 32a, and a driving member 330 and a locking member 332 are provided on the first ear plate 32a-1. The driving member 330 is made of A driving motor is used, and the output shaft 3301 of the driving motor is socketed with the key sleeve 336 of the swing arm 33, so as to achieve the effect of driving the swing arm 33 to swing. A first limiting surface 3331 is provided on one side of the first ear plate 32a-1, and a detection sensor 333 is provided on the first limiting surface 3331. When the swing arm 33 swings, when the side surface contacts the first limiting surface 3331, the swing arm 33 is in a state perpendicular to the power telescopic component, and the detection sensor 333 can be triggered at this time. After the detection sensor 333 is triggered, the driving part 330 stops working, and the locking part 332 works to lock the position of the swing arm 33 and keep it in the working state, wherein the detection sensor 333 can adopt a proximity switch.

[0050] Furthermore, as a specific embodiment, the locking member 332 is an electric telescopic rod, and the swing arm 33 is provided with a locking hole 335 adapted to the locking member 332. Specifically, when the swing arm 33 is in the working state, the locking hole 335 is aligned with the locking member 332. At this time, the electric telescopic rod is extended and inserted into the locking hole 335, thereby locking the swing arm 33. This structure is simple, reliable, and has low production costs.

[0051] Further, as a specific embodiment, refer to Figure 9 、 Figure 11 The specific structure of the fixing member 32 is as follows: the fixing member 32 includes: Loading plate; The hinge frame 321 is provided on the second surface of the carrier plate and is hingedly connected to two oppositely disposed clamping jaws 320; The linear telescopic member 322 is disposed between the supporting plate and the second surface, with the first surface and the second surface facing away from each other, and is drivingly connected to the two clamping jaws 320 .

[0052] Specifically, exemplarily, the first plate 32a is taken as an example here, and the fixing member 32 includes a rotating shaft 3211 vertically rotatingly arranged on the first plate 32a, and the rotating shaft 3211 cooperates with the first plate 32a to prevent axial movement. The lower end of the rotating shaft 3211 is fixedly connected to the articulated frame 321, and two clamping jaws 320 are hingedly connected to the articulated frame 321. A linear telescopic member 322 is provided on the first surface of the first plate 32a opposite to the clamping jaw 320, wherein the linear telescopic member 322 uses an electric telescopic rod, and the end of the linear telescopic member 322 is driven and connected to the clamping jaw 320, thereby realizing the opening and closing of the driving clamping jaw 320. In actual use, the insulator is clamped, fixed and released by the opening and closing of the two clamping jaws 320.

[0053] Further, as a specific embodiment, refer to Figure 9 、 Figure 11 、 Figure 13 The clamping jaw 320 is driven and connected to a swing shaft 3202, and the swing shaft 3202 is non-rotatably matched with a linkage jaw 3203, and a gap is set between the two linkage jaws 3203 and the first surface; A guide rod 324 is vertically guided on the supporting plate, and a first driving plate 323 is provided at the lower end of the guide rod 324 parallel to the first surface. The lower surface of the first driving plate 323 slides with the two linkage claws 3203, and the upper end of the guide rod 324 is drivingly connected to the linear telescopic member 322.

[0054] Specifically, the articulated frame 321 is rotatably connected to the first plate 32a via a rotating shaft 3211, and the rotating shaft 3211 is driven by a first drive motor 3210. The first drive motor 3210 can drive the rotating shaft 3211 to rotate around the axis, thereby enabling the clamping jaw 320 to swing slightly, thereby enabling a slight reciprocating swing when clamping the insulator, and ensuring that the clamping jaw 320 and the insulator are better and more tightly clamped. In order to ensure that the clamping jaw 320 can swing slightly about the axis of the rotating shaft 3211, reference is made to FIG. Figure 9The clamping jaw 320 is provided with a second ear plate 3201, and a swing shaft 3202 is rotatably provided on the articulated frame 321. The swing shaft 3202 is plugged into the second ear plate 3201, and the second ear plate 3201 and the swing shaft 3202 are non-rotatably matched. The end of the swing shaft 3202 extending out of the articulated frame 321 is non-rotatably matched with a linkage claw 3203, which is located directly above the linkage claw 3203. A guide rod 324 is vertically guided on the first plate 32a, and the lower end of the guide rod 324 is fixedly connected to the first driving plate 323. The first driving plate 323 is spaced 1-3 cm from the articulated frame 321, and the lower surface is aligned with the linkage claw 3 203 slides together, and the upper end of the guide rod 324 is driven and connected to the linear telescopic member 322. When working, the linear driving member 330 drives the guide rod 324 to move downward, and can exert downward pressure on the linkage claw 3203 through the first driving plate 323, thereby driving the linkage claw 3203 to swing the linkage clamping claw 320 to achieve clamping. When the linear driving member 330 retracts upward, the guide rod 324 no longer applies thrust to the linkage claw 3203, and at this time the two clamping claws 320 can be opened. Through the above-mentioned setting method, it can be ensured that the clamping claw 320 is driven while the articulated frame 321 has a slight swing.

[0055] Specifically, in some embodiments, a tension spring (not shown in the figure) can be provided between the two second ear plates 3201, and the tension spring provides elastic force for the two clamping jaws 320 to swing away from each other, so that the clamping jaws 320 can be in an open state under the elastic force of the tension spring.

[0056] Example 4 Specifically, it is understood that after the monitoring unit 3 is set on the insulator string 9, long-term online monitoring is required. During this process, the clamping method of the clamping jaw 320 relying on the extension of the linear telescopic member 322 is unreliable, and the linear telescopic member 322 is not conducive to continuous long-term work. In order to ensure the long-term clamping of the clamping jaw 320, reference is made to the embodiment of ... Figure 13-14 、 Figure 16 Furthermore, the upper end of the guide rod 324 is connected to a second driving plate 325, and the second driving plate 325 is vertically provided with a connecting rod 3251, and the connecting rod 3251 is matched with the guide of the bearing plate; The hanging member 31 includes a column 310 that cooperates with the vertical guide of the supporting plate, a locking rod 38 is provided in the guide inside the supporting plate, and a locking groove 3252 that cooperates with the locking rod 38 is provided on the outer peripheral surface of the connecting rod 3251; along the direction from the second surface to the first surface, the column 310 includes a third section 31-3 and a first section 31-1 that are adapted to the other end of the locking rod 38, and a connecting section 31-2 connecting the third section 31-3 and the first section 31-1; the radius of the third section 31-3 is smaller than that of the first section 31-1.

[0057] Specifically, refer to Figure 9 、 Figure 13-14 、 Figure 16 , there are two guide rods 324, the upper end of the guide rod 324 is provided with a second driving plate 325, the protruding end of the linear telescopic member 322 is provided with a third driving plate 3220, and the lower surface of the second driving plate 325 is provided with a connecting rod 3251. The first plate 32a is provided with a second guide hole 32a-6 corresponding to the connecting rod 3251, and the first plate 32a is provided with a first guide hole 32a-5 perpendicularly intersecting the second guide hole 32a-6. A locking rod 38 is provided in the first guide hole 32a-5, and the connecting rod 3251 is provided with a locking groove 3252 corresponding to the locking rod 38. The hanging member 31 includes a column 310, and a guide channel corresponding to the column 310 is provided on the first plate 32a. The first guide hole 32a-5 intersects with the guide channel. Figure 14 The column 310 is a stepped shaft, including a first section 31-1, a second section and a connecting section 31-2. When the clamping jaw 320 clamps the insulator, the power telescopic member 35 is extended, and the second driving plate 325 is driven by the third driving plate 3220, thereby driving the first driving plate 323 to drive the linkage claw 3203, so that the clamping jaw 320 is in a clamping state. When the clamping jaw 320 is in the clamping state, the state of the second driving plate 325 is as follows: Figure 16 As shown, at this time, the second drive plate 325 is in contact with the upper surface of the first plate 32a, and the locking groove 3252 corresponds to the locking end 381. At this time, the first section 31-1 is matched with the first guide hole 32a-5, and the first section 31-1 can be in contact with the axial end 382 of the locking rod 38, so that the locking end 381 of the locking rod 38 extends into the locking groove 3252, locking the connecting rod 3251, thereby locking the position of the second drive plate 325 and locking the clamping state of the clamping claw 320. At this time, the linear telescopic member 322 can stop working after retracting to the initial state, so that the linear telescopic member 322 does not need to work continuously, reducing the failure rate, improving reliability, and saving electricity.

[0058] Further, as a specific embodiment, refer to Figure 9 、 Figure 14 A second limiting surface is provided at one end of the third section 31-3 extending out from the second surface, and a first compression spring 313 is provided between the second limiting surface and the second surface; an edge plate 311 is provided on the column 310 on the side of the first section 31-1 away from the third section 31-3, and when the edge plate 311 abuts against the supporting plate, the first section 31-1 corresponds to the locking rod 38.

[0059] Specifically, the third section 31-3 of the column 310 extends out of the lower surface of the first plate 32a, and the rigid plate 312 is screwed to the lower end of the third section 31-3. The second limiting surface is the plate surface of the rigid plate 312. The third section 31-3 is sleeved with a first compression spring 313. The two ends of the first compression spring 313 are respectively abutted against the rigid plate 312 and the first plate 32a. The upper end of the column 310 is provided with an edge plate 311. Under the elastic force of the first compression spring 313, the edge plate 311 can abut against the first plate 32a. At this time, the first section 31-1 is just in Figure 14 The area corresponding to the shaft end 382 provides a locking force to the locking rod 38 and maintains the position under the elastic force of the first compression spring 313 .

[0060] Specifically, it should be noted that the above structures of the first plate 32a and the second plate 32b are consistent.

[0061] Specifically, the work of installing the monitoring unit 3 on and removing it from the insulator string 9 includes the following steps: ① The rope 110 of the drone 1 is connected to the two hanging parts 31. At this time, the two clamping claws 320 are in an open state. At this time, the second driving plate 325 is in a state of being spaced apart from the upper surface of the supporting plate. The connecting rod 3251 is pulled out from the second guide hole 32a-6, and the linear telescopic member 322 is in a retracted state. ② The drone 1 takes off, pulling the monitoring unit 3 upward and moving it to the top of the insulator string 9. Under the weight of the monitoring unit 3, the first compression spring 313 is compressed a certain distance, and the second section corresponds to the locking rod 38. ③ When the winch 11 is working, the monitoring unit 3 is lowered a certain distance so that the monitoring unit 3 stops just above the insulator string 9, and a certain distance is ensured between the monitoring unit 3 and the insulator string 9, so that the first compression spring 313 remains in a compressed state; ④ The linear telescopic member 322 extends to drive the second drive plate 325 and the first drive plate 323 to move, driving the clamping claw 320 to clamp until the second drive plate 325 contacts the upper surface of the carrier plate; ⑤. The linear telescopic member 322 remains extended, the drone 1 releases the monitoring unit 3, and the column 310 descends under the elastic force of the first compression spring 313. The connecting section 31-2 drives the shaft end 382 to lock the locking rod 38 on the connecting rod 3251. ⑥. After the monitoring unit 3 has monitored for a certain period of time, the drone 1 mounts the mounting part 31 again and provides an upward pulling force to ensure that the upward pulling force is greater than or equal to the gravity of the monitoring unit 3. At this time, the column 310 is pulled upward to compress the first compression spring 313, so that the second section corresponds to the shaft end 382. At this time, the locking rod 38 loses its locking force, and the drone 1 continues to increase the upward pulling force. At this time, the clamp 320 opens, and the monitoring unit 3 is separated from the insulator string 9.

[0062] Furthermore, in the actual implementation process, along the length direction of the power telescopic rod, the distance between the two fixing parts 32 is equal to about one-third of the total length of the insulator string 9, and is arranged at the end away from the transmission line, and the power telescopic rod and the first plate 32a and the second plate 32b are in an insulating state. Therefore, in the actual application process, good insulation can be guaranteed and will not affect the normal operation of the insulator string 9.

[0063] Furthermore, it is understandable that when the monitoring unit 3 is fixed on the insulator string 9 for a long time to perform monitoring work, the locking rod 38 may become stuck. When the jam occurs, it will affect the locking rod 38 to release the connecting rod 3251, so that the monitoring unit 3 cannot be effectively separated from the insulator string 9. In order to deal with the above problem, further, reference is made to Figure 10 、 Figure 12 、 Figure 15 The radius of the shaft end 382 is greater than the radius of the locking rod 38, and a tapered surface 383 is provided between the shaft end 382 and the rod body of the locking rod 38. A third guide hole connected to the second guide hole 32a-6 is vertically provided on the first plate 32a. A rigid rod 37 is guided in the third guide hole. A flange 371 is provided in the middle area of ​​the rigid rod 37. A third compression spring 373 is provided below the flange 371, and a second compression spring 372 is provided above the flange 371. Figure 15 state, at this time the third compression spring 373 and the second compression spring 372 are both in a free state, and at this time the lower end of the rigid rod 37 is not in contact with the conical surface 383.

[0064] Furthermore, a support arm 31a is provided on the upper surface of the first plate 32a and below the edge plate 311. The support arm 31a is hingedly connected to the swing arm 31b through a pin shaft 31a-1. The swing arm 31b is provided with a driving end 31b-1 located above the upper end of the rigid rod 37. The other end of the pin shaft 31a-1 is connected to a pull rope 31c. The other end of the pull rope 31c is fixedly connected to the edge plate 311 to control the length of the pull rope 31c. When the drone 1 pulls the monitoring unit 3 to take off, when the first compression spring 313 is compressed under the action of its own gravity, the pull rope 31c will not pull the swing arm 31b to swing. When the locking rod 38 is stuck, the drone 1 can continue to increase the upward pulling force, so that the first compression spring 313 is continuously compressed. During this process The edge plate 311 will pull the pull rope 31c, thereby pulling the swing rod 31b to swing, thereby driving the rigid rod 37 to move downward, and the end of the rigid rod 37 will provide downward pressure on the conical surface 383, thereby driving the locking rod 38 to move a certain distance in the unlocking direction. Once the locking rod 38 moves a certain distance, it can be released from the stuck position. At this time, the clamping claw 320 also has a tendency to expand outward under the pulling force of the drone 1, and will also provide an upward force on the second driving plate 325. The locking groove 3252 is an arc groove, and the locking end 381 is a hemispherical end. Therefore, at this time, the arc groove also provides a force for the locking end 381 to move in the unlocking direction. Under the dual force, the locking rod 38 can be unlocked. The above structure is simple and practical, and can improve the reliability of the detection unit.

[0065] Specifically, it should be noted that, as a preferred embodiment, reference Figure 7 、 Figure 8 The swing arm 33 can adopt a structure in which the skeleton is made of steel and the surface is covered with a ceramic layer to improve insulation and safety. A strip hole 331 is provided on the swing arm 33. The detection component 34 includes an electric field probe provided on the swing arm 33. The electric field probe includes a plate body 340. A screw 341 for passing through the strip hole 331 is provided on the plate body 340. A locking nut 342 is tightened at the other end of the screw 341 to fix the electric field probe. Two positioning protrusions 343 are provided at intervals on the plate body 340. The two positioning protrusions 343 can be positioned with the side of the swing arm 33. Through the above setting method, the position of the electric field probe can be adjusted according to needs.

[0066] Specifically, refer to Figure 6 A first ear plate 32a-1 is provided on the first plate 32a, and a support member 32b-1 for supporting the swing arm 33 is provided on the second plate 32b.

[0067] Example 6 Furthermore, the present application also provides an insulator pollution flashover monitoring method, which uses any of the above-mentioned detection devices and includes the following steps: Step 1: Connect the drone 1 to the monitoring unit 3 so that the swing arm 33 is in the retracted state; Step 2: Control the drone 1 to take off above the insulator string 9, collect image information of the insulator string 9 through the visual acquisition module 2, determine the position of the insulator string 9, and place the monitoring unit 3 directly above the insulator string 9; Step 3: Control the monitoring unit 3 to descend, so that the monitoring unit 3 falls onto the insulator; Step 4: Fix the drone 1 to the insulator through the fixing member 32; then release the drone 1 from the monitoring unit 3 and return to the base; Step 5: The swing arm 33 swings to the working state, and the detection component 34 is started to perform online monitoring of the insulator; Step 6: After the monitoring is completed, the swing arm 33 returns to the storage state, the drone 1 is connected to the monitoring unit 3, the fixing member 32 releases the insulator, and the monitoring unit 3 is recovered.

[0068] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An insulator flashover monitoring device, characterized in that: include: Drone (1); A monitoring unit (3) includes a fixing member (32), a hanging member (31) disposed on the fixing member (32), a swing arm (33) rotatably disposed on the fixing member (32), and detection components (34) disposed on the swing arm (33) at intervals along the length direction of the swing arm (33); A visual acquisition module (2) is provided on the drone (1); The hanging member (31) is detachably connected to the drone (1); the fixing member (32) is used for detachably fixing and connecting to the insulator; the swing arm (33) is drivingly connected to a driving member (330); the driving member (330) is capable of driving the swing arm (33) to swing around a first axis, the first axis being perpendicular to a second axis of the insulator to be detected; and the length direction of the swing arm (33) is perpendicular to the first axis.

2. The insulator pollution flashover monitoring device and method according to claim 1, characterized in that: The fixing members (32) include two fixed members (32) that are spaced apart from each other. A power telescopic rod is provided between the two fixing members (32), and the telescopic direction of the power telescopic rod is perpendicular to the first axis.

3. The insulator flashover monitoring device according to claim 2, characterized in that: Each of the fixing members (32) is provided with a hanging member (31), and the drone (1) is provided with two winches (11) connected to the two hanging members (31) in a one-to-one correspondence.

4. The insulator flashover monitoring device and method according to claim 2, characterized in that: The fixing member (32) includes a bearing plate; the hanging member (31) is arranged on a first surface of the bearing plate, and a locking member (332) is also arranged on the first surface along the swing path of the swing arm (33); A first limiting surface (3331) is provided on the first surface, a detection sensor (333) is provided on the first limiting surface (3331), and the locking member (332) is connected to the detection sensor (333).

5. The insulator pollution flashover monitoring device and method according to claim 4, characterized in that: The locking member (332) is an electric telescopic rod, and the swing arm (33) is provided with a locking hole (335) adapted to the locking member (332).

6. The insulator pollution flashover monitoring device and method according to claim 1, characterized in that: The fixing member (32) comprises: Loading plate; An articulated frame (321) is arranged on the second surface of the bearing plate and is hingedly connected to two oppositely arranged clamping claws (320); The linear telescopic member (322) is arranged on the supporting plate and the second surface, with the first surface and the second surface facing away from each other, and is drivingly connected to the two clamping jaws (320).

7. The insulator flashover monitoring device according to claim 6, characterized in that: The clamping claw (320) is drivingly connected to a linkage claw (3203); A guide rod (324) is provided on the support plate for guidance. A first driving plate (323) is provided at the lower end of the guide rod (324). The lower surface of the first driving plate (323) is slidably engaged with the two linkage claws (3203). The upper end of the guide rod (324) is drivingly connected to the linear telescopic member (322).

8. The insulator flashover monitoring device according to claim 7, characterized in that: The upper end of the guide rod (324) is connected to a second drive plate (325), and the second drive plate (325) is provided with a connecting rod (3251); The hanging member (31) includes a column (310) matched with the guide of the bearing plate, a locking rod (38) is provided in the guide of the bearing plate, and a locking groove (3252) is provided on the outer peripheral surface of the connecting rod (3251); along the direction from the second surface to the first surface, the column (310) includes a third section (31-3) adapted to the locking rod (38) and a first section (31-1), and the radius of the third section (31-3) is smaller than that of the first section (31-1).

9. The insulator flashover monitoring device according to claim 8, characterized in that: One end of the third section (31-3) extending out from the second surface is provided with a second limiting surface, and a first compression spring (313) is provided between the second limiting surface and the second surface.

10. A method for monitoring insulator flashover, characterized in that: The detection device according to any one of claims 1 to 9 comprises the following steps: Step 1: Connect the drone (1) to the monitoring unit (3) so that the swing arm (33) is in the retracted state; Step 2: Control the drone (1) to take off to above the insulator string (9), collect image information of the insulator string (9) through the visual acquisition module (2), determine the position of the insulator string (9), and place the monitoring unit (3) directly above the insulator string (9); Step 3: Control the monitoring unit (3) to descend, so that the monitoring unit (3) falls onto the insulator; Step 4: Fix the insulator with the fixing member (32); then the drone (1) releases the monitoring unit (3), and the drone (1) returns; Step 5: The swing arm (33) swings to a working state, and the detection component (34) is started to perform online monitoring of the insulator; Step 6: After the monitoring is completed, the swing arm (33) returns to the storage state, the drone (1) is connected to the monitoring unit (3), the fixing member (32) releases the insulator, and the monitoring unit (3) is recovered.

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