An insulator condition monitoring device for power transmission lines of an electrical grid

Abstract

The application discloses an insulator state monitoring device for power transmission lines of power grids, and relates to the technical field of insulator monitoring.The device comprises a fixing assembly and a monitoring ring.The fixing assembly is erected on an iron frame workpiece, and the iron frame workpiece is connected with a plurality of insulators on one side.The monitoring ring is provided with two semicircular rings, and a visual monitoring module one is arranged on the surface of the side of the monitoring ring facing the insulators.The inner diameter surface of the semicircular ring is respectively provided with a visual monitoring module two and an infrared monitoring module.Air chambers one and two are sequentially arranged inside the semicircular ring from inside to outside.The air chamber one is provided with a plurality of through holes on the side facing the insulators at intervals, and a fixing rod is arranged in the through hole.The fixing rod is provided with a rotating plate, and a torsional spring is connected between the fixing rod and the rotating plate.The application improves the comprehensiveness of insulator state monitoring, and improves the surface cleaning quality and convenience of the insulator.

Description

Technical Field

[0001] This invention relates to the field of insulator monitoring technology, specifically to an insulator condition monitoring device for power transmission lines in power grids. Background Technology

[0002] Transmission line insulators are crucial electrical devices in power systems, performing vital electrical and mechanical functions within transmission lines. Their primary function is to insulate energized conductors from grounded towers, preventing current leakage through the insulator to the towers and ensuring the safe operation of the transmission line. They can withstand high voltage and prevent electrical faults such as arcing. Insulators also support the conductors, bearing the tension, gravity, and mechanical loads such as wind. They require sufficient mechanical strength to ensure the conductors remain stable under harsh environmental conditions (such as strong winds and icing).

[0003] Insulators are susceptible to contamination and weather conditions during long-term use. Pollutants such as dust, salt spray, and industrial exhaust gases in the atmosphere adhere to the insulator surface, reducing its insulation performance. Especially in humid environments, contamination can easily increase leakage current on the insulator surface, even triggering flashover accidents. Harsh weather conditions increase the mechanical load on the insulator, potentially causing it to break. Therefore, it is necessary to regularly clean the insulators or apply anti-flashover coatings to improve their resistance to contamination, and to regularly inspect their surface condition and insulation performance.

[0004] Currently, the main method for monitoring insulators is regular inspection. Power maintenance personnel need to periodically inspect the insulators of transmission lines to check for abnormalities such as damage, cracks, and discharge traces. Any problems found must be recorded promptly and repairs or replacements arranged. In addition, heavily soiled insulators require cleaning or washing. For workers, the inspection and maintenance process is not easy. Summary of the Invention

[0005] The purpose of this invention is to provide an insulator condition monitoring device for power transmission lines in power grids, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an insulator condition monitoring device for power transmission lines in a power grid, comprising a fixing component and a monitoring ring, wherein the fixing component is mounted on an iron frame workpiece, and a plurality of insulators are connected to one side of the iron frame workpiece, the fixing component is set corresponding to each insulator, and the monitoring ring is set on the fixing component and faces the insulators for monitoring the insulator condition.

[0007] According to the above technical solution, the monitoring ring is provided with two semicircular rings. The surface of the monitoring ring facing the insulator is provided with a visual monitoring module 1 for simple surface inspection of the insulator's daily working status. The inner diameter surfaces of the semicircular rings are respectively provided with a visual monitoring module 2 and an infrared monitoring module for periodic comprehensive inspection of the insulator.

[0008] According to the above technical solution, the semi-circular ring has two air chambers, one inside and one outside, in sequence. The side of the air chamber facing the insulator has several through holes at intervals. A fixing rod passes through the through holes, and a rotating plate is sleeved on the fixing rod. A torsion spring connects the fixing rod and the rotating plate.

[0009] According to the above technical solution, a deflection groove is provided between the first air chamber and the second air chamber, corresponding to the position of each rotating plate. A bellows cover is connected between the two sides of the rotating plate and the deflection groove to isolate the first air chamber and the second air chamber. A ventilation groove is provided on the part of the rotating plate located in the first air chamber.

[0010] According to the above technical solution, gas chamber one and gas chamber two are respectively connected to gas pipelines, and the semi-circular ring as a whole is made of insulating material.

[0011] According to the above technical solution, an electromagnetic plate is installed in the second air chamber to match the deflection position of each rotating plate, and the part of the rotating plate located in the second air chamber is provided with magnetic material.

[0012] According to the above technical solution, air chamber one is provided with airflow inlets corresponding to each rotating plate, air chamber two is externally connected to air pump one and air pump two respectively, air pump one and air pump two are respectively equipped with corresponding reversing valves, and airflow inlets of air chamber one are connected to air chamber three.

[0013] According to the above technical solution, a cleaning head is provided at the end of the rotating plate facing the insulator, which can be used to clean the surface of the insulator.

[0014] According to the above technical solution, a pad is provided on the side of one of the semicircular rings facing away from the insulator, and a pressure-sensitive module is laid on the pad to detect the splicing status between the two semicircular rings.

[0015] According to the above technical solution, there are two sets of fixing components, each corresponding to a semicircular ring. The fixing component includes a housing, inside which is a slide rail. A slide plate is mounted on the slide rail. One side of the slide plate is connected to the semicircular ring, and the other side of the slide plate has a connecting groove. A sealing block is provided on the side of the housing opposite to the connecting groove. The sealing block opens towards the connecting groove. A spring connects the connecting groove and the sealing block. A tension detection module is provided at the connection between the spring and the sealing block. An air pump is connected to the outside of the sealing block. A sealing plate is provided on the housing in conjunction with the connecting groove to provide a sealing space for the connecting groove of the slide plate.

[0016] According to the above technical solution, there are locking blocks on both sides of the shell for fixing the shell to the iron frame workpiece.

[0017] According to the above technical solution, the fixed components and monitoring ring are equipped with a monitoring system. The monitoring system includes a daily monitoring unit and a periodic monitoring unit. The daily monitoring unit is connected to the visual monitoring module 1 and is used to monitor and evaluate the condition of the insulator under normal conditions. The periodic monitoring unit is connected to the visual monitoring module 2 and the infrared monitoring module and is used to conduct more comprehensive and accurate monitoring and evaluation of the condition of the insulator periodically.

[0018] Compared with existing technologies, the beneficial effects achieved by this invention are as follows: This invention, by incorporating a monitoring ring, can be used for daily and periodic status monitoring of insulators. Visual monitoring modules one and two monitor the surface condition of the insulator, while an infrared monitoring module monitors the heating state of the insulator surface, determining whether abnormal heating occurs and thus identifying any leakage current. This improves the comprehensiveness and convenience of insulator monitoring. The semi-circular ring and its internal structure enable effective cleaning of the insulator surface. Furthermore, the direction of the output airflow can be adjusted according to the cleaning type, improving cleaning quality. Moreover, the temperature of the output airflow can be controlled, making it suitable for insulators requiring heating and drying, thus improving the insulator's performance. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the monitoring device of the present invention;

[0021] Figure 2 This is a partial schematic diagram of the monitoring device of the present invention;

[0022] Figure 3 This is a partial cross-sectional view of the monitoring ring of the present invention;

[0023] Figure 4 This is the present invention. Figure 3 Enlarged diagram of area A;

[0024] Figure 5 This is a cross-sectional view of the monitoring ring of the present invention;

[0025] Figure 6 This is the present invention. Figure 5 Enlarged diagram of area B;

[0026] Figure 7 This is a schematic diagram of one deflection state of the rotating plate of the present invention;

[0027] Figure 8This is a schematic diagram of the structure of the fixing component of the present invention;

[0028] Figure 9 This is an exploded view of the fixing component of the present invention;

[0029] Figure 10 This is a cross-sectional view of the fixing component of the present invention.

[0030] In the diagram: 1. Fixing component; 11. Housing; 12. Slide rail; 13. Slide plate; 131. Connecting groove; 14. Sealing block; 15. Spring; 16. Air pump three; 17. Sealing plate; 2. Monitoring ring; 21. Semi-circular ring; 211. Air chamber one; 212. Air chamber two; 213. Through hole; 214. Fixing rod; 215. Rotating plate; 2151. Ventilation slot; 216. Deflection slot; 217. Bellows cover; 218. Electromagnetic plate; 219. Cleaning head; 22. Visual monitoring module one; 23. Visual monitoring module two; 24. Infrared monitoring module; 25. Air pump one; 26. Air pump two; 27. Air chamber three; 3. Iron frame workpiece; 4. Insulator; 5. Gasket; 6. Clamping block. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1-10 The present invention provides a technical solution: an insulator status monitoring device for power transmission lines in a power grid, comprising a fixing component 1 and a monitoring ring 2. The fixing component 1 is mounted on an iron frame workpiece 3. A plurality of insulators 4 are connected to one side of the iron frame workpiece 3. The fixing component 1 is set corresponding to each insulator 4. The monitoring ring 2 is set on the fixing component 1 and faces the insulator 4, and is used to monitor the status of the insulator 4.

[0033] like Figure 3 As shown, the monitoring ring 2 is provided with two semicircular rings 21. The surface of the monitoring ring 2 facing the insulator 4 is provided with a visual monitoring module 1 22 for simple surface inspection of the insulator 4 in daily operation. The inner diameter surfaces of the semicircular rings 21 are provided with a visual monitoring module 23 and an infrared monitoring module 24, respectively, for periodic comprehensive inspection of the insulator 4.

[0034] like Figures 4-6As shown, the semi-circular ring 21 has two air chambers, one 211 and the other 212, arranged sequentially from the inside to the outside. The air chamber 211 has several through holes 213 spaced apart on the side facing the insulator 4. A fixing rod 214 passes through the through holes 213. A rotating plate 215 is fitted on the fixing rod 214. A torsion spring connects the fixing rod 214 and the rotating plate 215.

[0035] Furthermore, the semicircular ring 21 is provided with deflection grooves 216 between air chamber 1 211 and air chamber 212, corresponding to the position of each rotating plate 215. Bellows covers 217 are connected between the two sides of the rotating plate 215 and the deflection grooves 216 to isolate air chamber 1 211 and air chamber 212. The part of the rotating plate 215 located in air chamber 1 211 is provided with ventilation grooves 2151.

[0036] Furthermore, air chamber 1 211 and air chamber 2 212 are respectively connected to external air supply pipelines, and the semi-circular ring 21 is made of insulating material.

[0037] In actual operation, when airflow enters the second air chamber 212, the rotating plate 215 is pushed to rotate to the other side according to the airflow direction. The rotating plate 215 stops rotating after touching one side of the through hole 213. When the airflow stops, the rotating plate 215 returns to the center position under the action of the torsion spring. When airflow enters the first air chamber 211, the airflow can be output to the outside through each through hole 213, which can clean the surface of the insulator 4 or change its surface temperature.

[0038] In one embodiment, an electromagnetic plate 218 is provided in the second air chamber 212 to match the deflection position of each rotating plate 215, and the portion of the rotating plate 215 located in the second air chamber 212 is provided with a magnetic material.

[0039] The following is a supplementary explanation based on the above structure: (e.g.) Figure 7 As shown, the deflection direction of the rotating plate 215 can be used to adjust the output direction of the airflow. When clockwise airflow is introduced into the second air chamber 212, the rotating plate 215 deflects clockwise, the electromagnetic plate 218 is energized, and it attracts the rotating plate 215 when it comes close. At this time, the other end of the rotating plate 215 is pressed against the surface of one side of the through hole 213, so that the airflow cannot be output from this side. The airflow input into the first air chamber 211 is output from the other side of the through hole 213. The ventilation slot 2151 is used for airflow circulation so that the airflow on both sides of the rotating plate 215 can be led out. Similarly, when counterclockwise airflow is introduced into the second air chamber 212, the rotating plate 215 deflects counterclockwise, and the other side of the through hole 213 is the airflow outlet.

[0040] Optionally, air chamber 211 is provided with air inlet corresponding to each rotating plate 215, air chamber 212 is externally connected to air pump 25 and air pump 26 respectively, air pump 25 and air pump 26 are respectively equipped with corresponding reversing valves, and air inlet of air chamber 211 is connected to air chamber 3 27.

[0041] It should be further explained that: In one scenario, air pump 25 draws in air from the outside and inputs it into air chamber 212. The airflow flows clockwise and outputs from another interface to air pump 26. Air pump 26 outputs the air to air chamber 37, and then air chamber 37 uniformly delivers it to the various airflow inlets of air chamber 211. In another scenario, air pump 26 draws in air from the outside and inputs it into air chamber 212. The airflow flows counterclockwise and outputs from another interface to air pump 25. Air pump 25 outputs the air to air chamber 37, and then air chamber 37 uniformly delivers it to the various airflow inlets of air chamber 211.

[0042] Preferably, a cleaning head 219 is provided at the end of the rotating plate 215 facing the insulator 4, which can be used to clean the surface of the insulator 4.

[0043] One of the semicircular rings 21 has a pad 5 on the side facing away from the insulator 4. A pressure-sensitive module is laid on the pad 5 to detect the splicing status between the two semicircular rings 21.

[0044] like Figures 8-10 As shown, the fixing component 1 is provided in two sets, each corresponding to a semicircular ring 21. The fixing component 1 includes a housing 11, inside which a slide rail 12 is provided. A slide plate 13 is provided on the slide rail 12. One side of the slide plate 13 is connected to the semicircular ring 21, and the other side of the slide plate 13 has a connecting groove 131. A sealing block 14 is provided on the side of the housing 11 opposite to the connecting groove 131. The sealing block 14 is open on the side facing the connecting groove 131. A spring 15 is connected between the connecting groove 131 and the sealing block 14. A tension detection module is provided at the connection between the spring 15 and the sealing block 14. An air pump 16 is connected to the outside of the sealing block 14. A sealing plate 17 is provided on the housing 11 in conjunction with the connecting groove 131 to provide a sealing space for the connecting groove 131 of the slide plate 13.

[0045] In actual operation, airflow is input into the connecting groove 131 by the air pump 316, which pushes the slide plate 13 to slide on the slide rail 12, thereby controlling the semi-circular ring 21 to move towards the insulator 4. The spring 15 is used to detect the sliding distance of the slide plate 13 according to the pulling length. The pulling length of the spring 15 is confirmed by the pulling force detected by the pulling force detection module.

[0046] Optionally, locking blocks 6 are provided on both sides of the housing 11 to fix the housing 11 to the iron frame workpiece 3. It should be noted that, in order to accommodate the different installation angles of the insulator 4, the locking blocks 6 can be replaced with a rotating structure to adjust the installation angle of the housing 11.

[0047] The fixed component 1 and the monitoring ring 2 are equipped with a monitoring system. The monitoring system includes a daily monitoring unit and a periodic monitoring unit. The daily monitoring unit is connected to the visual monitoring module 1 22 and is used to monitor and evaluate the status of the insulator 4 under normal conditions. The periodic monitoring unit is connected to the visual monitoring module 23 and the infrared monitoring module 24 and is used to conduct more comprehensive and accurate monitoring and evaluation of the status of the insulator 4 periodically.

[0048] The daily monitoring unit is used for environmental condition monitoring and coarse monitoring of the surface condition of insulator 4. Under daily monitoring conditions, the fixed component 1 does not actively push the monitoring ring 2, and the monitoring ring 2 is monitored by the visual monitoring module 22.

[0049] Specifically, visual monitoring module 22 first identifies the weather conditions of the day to determine if it is in a severe weather environment, i.e., an environment that would damage the surface of insulator 4 or reduce its insulation performance. For insulator 4 under normal weather conditions, visual monitoring module 22 monitors its surface condition in real time, checking for excessive impurities or damage. If any are found, it cleans the surface or notifies personnel to replace the insulator. For insulator 4 under severe weather conditions, while monitoring its surface condition in real time, after the severe weather conditions end, the fixing component 1 controls the monitoring ring 2 to extend. During this process, visual monitoring module 23 and infrared monitoring module 24 will respectively detect the surface condition and heating status of the gaps between the insulator 4's segments to determine if there is any damage or leakage. If insulator 4 exhibits abnormal heating during operation, assuming no surface damage, it is determined that the increased current is due to leakage.

[0050] Furthermore, if the visual monitoring module 22 detects foreign objects covering the surface of the insulator 4 during routine monitoring, it will attempt to remove the foreign objects from the surface of the insulator 4 by pushing out the monitoring ring 2.

[0051] The periodic monitoring unit is used to periodically monitor the condition of insulator 4. In this state, the monitoring ring 2 is pushed by the fixing component 1, and the surface of insulator 4 is scanned in all directions by the visual monitoring module 23 and the infrared monitoring module 24, so as to evaluate its surface condition and leakage condition.

[0052] If the surface of insulator 4 is covered with too many impurities, it needs to be cleaned. The monitoring ring 2 is then moved to the position requiring cleaning, and the corresponding rotating plate 215 is adjusted to change the airflow outlet direction. Specifically, if a large area of ​​impurities is detected covering the surface of insulator 4, the airflow outlet direction cannot be fixed. In this case, the electromagnetic plate 218 is not energized, and airflow with a changing clockwise and counterclockwise flow rate is introduced into the second air chamber 212, causing the rotating plate 215 to deflect periodically. The airflow output presents a sweeping state, and the fixing component 1 pushes the monitoring ring 2 across the surface of insulator 4, thus ensuring a more thorough cleaning of the insulator 4 surface.

[0053] Furthermore, if localized impurities are detected covering the surface of insulator 4, the monitoring ring 2 is positioned to the cleaning location, the cleaning range is determined, and the corresponding semicircular ring 21 is locked. The cleaning range is divided into two sides by its center, and the rotating plates 215 adjacent to the cleaning boundary are identified. The rotating plates 215 within the cleaning range are deflected accordingly. By controlling the energization of the corresponding electromagnetic plates 218, the rotating plates 215 located on both sides of the center of the cleaning range are deflected towards the center and remain unchanged, allowing the output airflow to concentrate within the cleaning range and improve cleaning quality.

[0054] Furthermore, if the infrared monitoring module 24 detects that the surface of the insulator 4 is too hot or too cold, it is necessary to perform emergency regulation of its surface temperature to ensure that the insulator 4 can work normally or to prevent excessive damage to the insulator 4.

[0055] Specifically, in humid environments, dirt can more easily increase the leakage current on the surface of insulator 4, and even cause flashover accidents. In cold environments, icing increases the weight and mechanical load of insulator 4, and may even cause it to crack. In these cases, the surface of insulator 4 needs to be dried and heated. Before outputting the airflow, the current flowing through the electromagnetic plate 218 is increased to increase the heat generated. After airflow is introduced into the second air chamber 212, the airflow carries the heat out to the second air chamber 212, and then outputs it to the surface of insulator 4 through the through holes 213, thus achieving a heating effect. When localized high temperatures appear on the surface of insulator 4, continuous airflow can be output to the abnormally high-temperature area to assist in cooling, preventing further damage to the insulator 4 as a whole from continuous high temperatures. The abnormal location is marked to notify personnel for repair and replacement.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for monitoring the condition of insulators in power transmission lines of a power grid, comprising a fixed assembly (1) and a monitoring ring (2), characterized in that, The fixing component (1) is mounted on the iron frame workpiece (3). A number of insulators (4) are connected to one side of the iron frame workpiece (3). The fixing component (1) is set for each of the insulators (4). The monitoring ring (2) is set on the fixing component (1) and faces the insulator (4) to monitor the status of the insulator (4). The monitoring ring (2) is provided with two semicircular rings (21). A visual monitoring module (22) is provided on the side of the monitoring ring (2) facing the insulator (4) for surface detection of the daily working state of the insulator (4). A visual monitoring module (23) and an infrared monitoring module (24) are respectively provided on the inner diameter surface of the semicircular ring (21) for periodic detection of the insulator (4). The semi-circular ring (21) has two air chambers, one (211) and two (212), arranged sequentially from the inside to the outside. The air chamber one (211) has several through holes (213) spaced apart on the side facing the insulator (4). A fixing rod (214) passes through the through holes (213). A rotating plate (215) is sleeved on the fixing rod (214). A torsion spring connects the fixing rod (214) and the rotating plate (215). The semicircular ring (21) is located between the first air chamber (211) and the second air chamber (212), and a deflection groove (216) is provided at the position of each of the rotating plates (215). A bellows cover (217) is connected between the two sides of the rotating plate (215) and the deflection groove (216) to isolate the first air chamber (211) and the second air chamber (212). A ventilation groove (2151) is provided on the part of the rotating plate (215) located in the first air chamber (211). The first air chamber (211) and the second air chamber (212) are respectively connected to air supply pipelines. The semi-circular ring (21) is made of insulating material. An electromagnetic plate (218) is provided in the second air chamber (212) to match the deflection position of each of the rotating plates (215). The part of the rotating plate (215) located in the second air chamber (212) is provided with magnetic material.

2. The insulator condition monitoring device for power transmission lines in a power grid according to claim 1, characterized in that, One of the semicircular rings (21) has a pad (5) on the side facing away from the insulator (4), and a pressure-sensitive module is laid on the pad (5).

3. The insulator condition monitoring device for power transmission lines in a power grid according to claim 2, characterized in that, The deflection direction of the rotating plate (215) is used to adjust the output direction of the airflow; When clockwise airflow is introduced into air chamber two (212), the rotating plate (215) deflects clockwise, the electromagnetic plate (218) is energized, and it is attracted when the rotating plate (215) is close. At this time, the other end of the rotating plate (215) is pressed against the surface of the through hole (213), so that the airflow cannot be output from this side. The airflow input into air chamber one (211) is output from the other side of the through hole (213). The ventilation slot (2151) is used for airflow circulation so that the airflow on both sides of the rotating plate (215) can be drawn out. Similarly, when counterclockwise airflow is introduced into air chamber two (212), the rotating plate (215) deflects counterclockwise, and the other side of the through hole (213) is the airflow outlet.

4. The insulator condition monitoring device for power transmission lines in a power grid according to claim 3, characterized in that, The first air chamber (211) is provided with an airflow inlet corresponding to each of the rotating plates (215). The second air chamber (212) is externally connected to the first air pump (25) and the second air pump (26). The first air pump (25) and the second air pump (26) are respectively equipped with corresponding reversing valves. The airflow inlet of the first air chamber (211) is connected to the third air chamber (27).

5. The insulator condition monitoring device for power transmission lines in a power grid according to claim 4, characterized in that, In one scenario, air pump 1 (25) draws in airflow from the outside and inputs it into air chamber 2 (212). The airflow flows clockwise and outputs from another interface to air pump 2 (26). Air pump 2 (26) outputs the airflow into air chamber 3 (27), and then air chamber 3 (27) uniformly delivers it to each airflow inlet of air chamber 1 (211). In another scenario, air pump 2 (26) draws in airflow from the outside and inputs it into air chamber 2 (212). The airflow flows counterclockwise and outputs from another interface to air pump 1 (25). Air pump 1 (25) outputs the airflow into air chamber 3 (27), and then air chamber 3 uniformly delivers it to each airflow inlet of air chamber 1 (211).

6. The insulator condition monitoring device for power transmission lines in a power grid according to claim 5, characterized in that, The fixing component (1) is provided in two sets, each corresponding to a semicircular ring (21). The fixing component (1) includes a housing (11), inside which a slide rail (12) is provided. A sliding plate (13) is provided on the slide rail (12). One side of the sliding plate (13) is connected to the semicircular ring (21), and the other side of the sliding plate (13) is provided with a connecting groove (131). A sealing block (1) is provided on the side of the housing (11) opposite to the connecting groove (131). 4) The sealing block (14) opens to the side facing the connecting groove (131). A spring (15) is connected between the connecting groove (131) and the sealing block (14). A tension detection module is provided at the connection between the spring (15) and the sealing block (14). An air pump (16) is connected to the outside of the sealing block (14). The housing (11) is equipped with a sealing plate (17) in cooperation with the connecting groove (131) to provide a sealing space for the connecting groove (131) of the slide plate (13).

7. The insulator condition monitoring device for power transmission lines in a power grid according to claim 6, characterized in that, The fixed component (1) and the monitoring ring (2) are equipped with a monitoring system. The monitoring system includes a daily monitoring unit and a periodic monitoring unit. The daily monitoring unit is connected to the visual monitoring module one (22) and is used to monitor and evaluate the status of the insulator (4) in daily conditions. The periodic monitoring unit is connected to the visual monitoring module two (23) and the infrared monitoring module (24) and is used to monitor and evaluate the status of the insulator (4) periodically.

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