Insulator state monitoring device for power transmission line of power grid

Abstract

The invention discloses an insulator state monitoring device for a power grid power transmission line, and relates to the technical field of insulator monitoring, the insulator state monitoring device comprises a fixing assembly and a monitoring ring, the fixing assembly is erected on an iron stand workpiece, one side of the iron stand workpiece is connected with a plurality of insulators, the monitoring ring is provided with two semi-circular rings, and the two semi-circular rings are connected with the fixing assembly. A first visual monitoring module is arranged on the surface of the side, facing the insulator, of the monitoring ring, a second visual monitoring module and an infrared monitoring module are arranged on the surface of the inner diameter of the semicircular ring, and a first air chamber and a second air chamber are sequentially formed in the semicircular ring from inside to outside. A plurality of through holes are formed in the side, facing the insulator, of the first air chamber at intervals, fixing rods are arranged in the through holes in a penetrating mode, rotating plates are arranged on the fixing rods in a sleeving mode, and torsional springs are connected between the fixing rods and the rotating plates. The insulator state monitoring comprehensiveness and the insulator surface cleaning quality and convenience are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of insulator monitoring, and in particular to an insulator status monitoring device for a power transmission line of a power grid. Background Art

[0002] Transmission line insulators are crucial electrical components in power systems, performing crucial electrical and mechanical functions within transmission lines. Their primary function is to insulate live conductors from grounded towers, preventing current from leaking through the insulators to the towers, thereby ensuring safe operation of transmission lines. They are designed to withstand high voltages and prevent electrical faults such as arcing. Insulators also support the conductors, withstanding mechanical loads such as tension, gravity, and wind. They must possess sufficient mechanical strength to ensure stability in harsh environmental conditions, such as high winds and icing.

[0003] Insulators are susceptible to pollution and weather conditions during long-term use. Atmospheric pollutants such as dust, salt spray, and industrial waste gases can adhere to the insulator surface, degrading its insulation performance. Particularly in humid environments, contamination can increase leakage current on the insulator surface and even cause flashover accidents. Severe weather conditions can increase the mechanical load on the insulator, potentially causing it to crack. Therefore, it's necessary to regularly clean insulators or apply anti-flashover coatings to improve their resistance to pollution. Furthermore, testing of their surface condition and insulation performance is essential.

[0004] Currently, the primary method for monitoring insulators is regular inspections. Power operations and maintenance personnel regularly inspect insulators along transmission lines for abnormalities such as damage, cracks, and discharge marks. Any problems discovered are promptly recorded and repair or replacement arranged. Furthermore, severely contaminated insulators require cleaning or sweeping. This inspection and maintenance process is not easy for personnel. Summary of the Invention

[0005] The object of the present invention is to provide an insulator status monitoring device for a power transmission line of a power grid, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an insulator status monitoring device for a power transmission line of a power grid, comprising a fixed component and a monitoring ring, wherein the fixed component is mounted on an iron frame workpiece, a plurality of insulators are connected to one side of the iron frame workpiece, the fixed component is arranged corresponding to each insulator, and the monitoring ring is arranged on the fixed component and faces the insulator for monitoring the status of the insulator.

[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 detection of the daily working status of the insulator. The inner diameter surface of the semicircular ring is provided with a visual monitoring module 2 and an infrared monitoring module for regular comprehensive detection of the insulator.

[0008] According to the above technical solution, air chamber 1 and air chamber 2 are opened in sequence from the inside to the outside inside the semicircular ring. Several through holes are spaced apart on the side of air chamber 1 facing the insulator. A fixing rod is passed through the through hole. A rotating plate is sleeved on the fixing rod. A torsion spring is connected between the fixing rod and the rotating plate.

[0009] According to the above technical solution, a deflection groove is opened in the semicircular ring between air chamber one and air chamber two, corresponding to the position of each rotating plate. An accordion cover is connected between the two sides of the rotating plate and the deflection groove to isolate air chamber one and air chamber two. A ventilation groove is opened on the part of the rotating plate located in air chamber one.

[0010] According to the above technical solution, air chamber 1 and air chamber 2 are respectively connected to the external gas pipeline, and the semicircular ring is made of insulating material as a whole.

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

[0012] According to the above technical solution, air chamber one is provided with an air flow input port corresponding to each rotating plate, air chamber two is respectively connected to air pump one and air pump two, air pump one and air pump two are respectively provided with corresponding reversing valves, and the air flow input port of air chamber one is connected to air chamber three.

[0013] According to the above technical solution, a cleaning head is provided at one 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 gasket is provided on the side of one of the semicircular rings facing away from the insulator, and a pressure sensing module is laid on the gasket to detect the splicing status between the two semicircular rings.

[0015] According to the above technical solution, two groups of fixing components are provided, which respectively cooperate with corresponding semicircular rings. The fixing components include a shell, a slide rail is provided inside the shell, and a slide rail is provided on the slide rail. One side of the slide is connected to the semicircular ring, and a connecting groove is provided on the other side of the slide. A sealing block is provided on the side of the shell relative to the connecting groove. The sealing block is open toward one side of the connecting groove. A spring is connected between the connecting groove and the sealing block. A tension detection module is provided at the connection between the spring and the sealing block. The sealing block is externally connected to an air pump three. The shell cooperates with the connecting groove to provide a sealing plate for the connecting groove to provide a sealed space for the connecting groove of the skateboard.

[0016] According to the above technical solution, clamping blocks are provided on both sides of the shell to fix the shell and the iron frame workpiece.

[0017] According to the above technical solution, the fixed component and the monitoring ring are jointly provided with a monitoring system, which includes a daily monitoring unit and a periodic monitoring unit. The daily monitoring unit is connected to the visual monitoring module 1 by signal, and is used to monitor and evaluate the insulator status under daily conditions. The periodic monitoring unit is connected to the visual monitoring module 2 and the infrared monitoring module by signal, and is used to regularly monitor and evaluate the insulator status in a more comprehensive and accurate manner.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing a monitoring ring, can be used for daily and periodic status monitoring of insulators, wherein visual monitoring module 1 and visual monitoring module 2 are used to monitor the surface status of the insulator, and the infrared monitoring module is used to monitor the heating status of the insulator surface, to determine whether an abnormal heating status occurs, thereby determining whether the insulator has leakage, thereby improving the comprehensiveness and convenience of insulator monitoring. By providing a semicircular ring and its internal structure, the effect of cleaning the insulator surface can be achieved. On this basis, the direction of the output airflow can be adjusted in a targeted manner according to the cleaning type, thereby improving the cleaning quality. Furthermore, the temperature of the output airflow can be regulated, and it can be used for insulators that require heating and drying, thereby improving the working performance of the insulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

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

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

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

[0023] Figure 4 This invention Figure 3 A magnified schematic diagram of area A;

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

[0025] Figure 6 This invention Figure 5 A magnified schematic diagram of area B;

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

[0027] Figure 8It is a schematic structural diagram of the fixing assembly of the present invention;

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

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

[0030] In the figure: 1. Fixed component; 11. Shell; 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. Semicircular ring; 211. Air chamber one; 212. Air chamber two; 213. Through hole; 214. Fixed rod; 215. Rotating plate; 2151. Ventilation groove; 216. Deflection groove; 217. Organ 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. Block. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-10 The present invention provides a technical solution: an insulator status monitoring device for a power transmission line of a power grid, comprising a fixed component 1 and a monitoring ring 2. The fixed 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 fixed component 1 is arranged corresponding to each insulator 4. The monitoring ring 2 is arranged on the fixed component 1 and faces the insulator 4 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 detection of the daily working status of the insulator 4. The inner diameter surface of the semicircular ring 21 is provided with a visual monitoring module 2 23 and an infrared monitoring module 24 for regular comprehensive detection of the insulator 4.

[0034] like Figures 4 to 6As shown, the interior of the semicircular ring 21 is provided with an air chamber 1 211 and an air chamber 2 212 from the inside out. A plurality of through holes 213 are provided at intervals on the side of the air chamber 1 211 facing the insulator 4. A fixing rod 214 is passed through the through hole 213. A rotating plate 215 is sleeved on the fixing rod 214. A torsion spring is connected between the fixing rod 214 and the rotating plate 215.

[0035] Furthermore, the semicircular ring 21 is provided with a deflection groove 216 between air chamber 1 211 and air chamber 2 212, corresponding to the position of each rotating plate 215. An accordion cover 217 is connected between the two sides of the rotating plate 215 and the deflection groove 216 to isolate air chamber 1 211 and air chamber 2 212. The part of the rotating plate 215 located in air chamber 1 211 is provided with a ventilation groove 2151.

[0036] Furthermore, the air chamber 1 211 and the air chamber 2 212 are respectively connected to an external gas pipeline, and the semicircular ring 21 is made of insulating material as a whole.

[0037] In actual operation, when airflow enters air chamber 212, it pushes rotating plate 215 to rotate to the other side according to the airflow direction. Rotating plate 215 stops rotating after contacting one side of through-hole 213. When airflow stops, rotating plate 215 returns to its central position due to the action of the torsion spring. When airflow enters air chamber 1 211, it can be discharged to the outside through the through-holes 213, thereby cleaning the surface of insulator 4 or changing its surface temperature.

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

[0039] The supplementary explanation based on the above structure is as follows: 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 flows into the second air chamber 212, the rotating plate 215 deflects clockwise, and the electromagnetic plate 218 is energized, causing the rotating plate 215 to attract when it is close to the surface of the through hole 213. At this time, the other end of the rotating plate 215 is pressed against the surface of one side of the through hole 213, preventing the airflow from being 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 slots 2151 are used to circulate airflow, so that airflow can be directed out from both sides of the rotating plate 215. Similarly, when counterclockwise airflow flows into the second air chamber 212, the rotating plate 215 deflects counterclockwise, and the other side of the through hole 213 becomes the airflow output port.

[0040] Optionally, air chamber 1 211 is provided with an air flow input port corresponding to each rotating plate 215, and air chamber 2 212 is respectively connected to air pump 1 25 and air pump 2 26, and air pump 1 25 and air pump 2 26 are respectively provided with corresponding reversing valves, and the air flow input port of air chamber 1 211 is connected to air chamber 3 27.

[0041] It should be noted that: in one case, air pump 1 25 inhales air from the outside and inputs it into air chamber 2 212, and the air flow flows clockwise and is output from another interface to air pump 2 26, and air pump 2 26 outputs it to air chamber 3 27, and then air chamber 3 27 uniformly transports it to the air flow input ports of air chamber 1 211; in another case, air pump 2 26 inhales air from the outside and inputs it into air chamber 2 212, and the air flow flows counterclockwise and is output from another interface to air pump 1 25, and air pump 1 25 outputs it to air chamber 3 27, and then the air chamber uniformly transports it to the air flow input ports of air chamber 1 211.

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

[0043] A gasket 5 is provided on the side of one of the semicircular rings 21 facing away from the insulator 4 , and a pressure sensing module is laid on the gasket 5 for detecting the splicing status between the two semicircular rings 21 .

[0044] like Figures 8 to 10 As shown, the fixing component 1 is provided with two groups, which respectively cooperate with the corresponding semicircular rings 21. The fixing component 1 includes a shell 11, a slide rail 12 is provided inside the shell 11, and 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 a connecting groove 131 is provided on the other side of the slide plate 13. A sealing block 14 is provided on the side of the shell 11 relative to the connecting groove 131. The sealing block 14 is open to one side of 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. The sealing block 14 is externally connected to an air pump 3 16. The shell 11 is provided with a sealing plate 17 in cooperation with the connecting groove 131 for providing a sealed space for the connecting groove 131 of the slide plate 13.

[0045] In actual operation, air flow is input into the connecting groove 131 through the air pump 3 16 to push the slide 13 to slide on the slide rail 12, thereby controlling the semicircular ring 21 to move toward the insulator 4. The spring 15 is used to detect the sliding distance of the slide 13 according to the pulling length. The pulling length of the spring 15 is confirmed by the detection tension of the tension detection module.

[0046] Optionally, blocks 6 are provided on both sides of the housing 11 for fixing the housing 11 to the iron frame workpiece 3. It should be noted that in order to meet the installation requirements of the insulator 4 at different angles, the blocks 6 can be replaced with a rotary structure for adjusting the installation angle of the housing 11.

[0047] The fixed component 1 and the monitoring ring 2 are equipped with a monitoring system, which includes a daily monitoring unit and a periodic monitoring unit. The daily monitoring unit is connected to the visual monitoring module 1 22 by signal, and is used to monitor and evaluate the status of the insulator 4 under daily conditions. The periodic monitoring unit is connected to the visual monitoring module 2 23 and the infrared monitoring module 24 by signal, and is used to regularly monitor and evaluate the status of the insulator 4 in a more comprehensive and accurate manner.

[0048] The daily monitoring unit is used for environmental status monitoring and rough monitoring of the surface status of the insulator 4. Under the daily monitoring status, the fixed component 1 does not actively push the monitoring ring 2, and the monitoring ring 2 relies on the visual monitoring module 22 for monitoring.

[0049] Specifically, the visual monitoring module 1 22 first identifies the weather conditions of the day and determines whether it is in a severe weather environment, that is, an environment that will damage the surface of the insulator 4 or reduce its insulation performance. For insulators 4 in normal weather conditions, the visual monitoring module 1 22 detects its surface condition in real time to see if there is too much impurity coverage or damage. If so, it is cleaned or the staff is notified to replace it. For insulators 4 in severe weather conditions, the visual monitoring module 1 22 detects its surface condition in real time. After the severe weather environment ends, the fixed component 1 will control the monitoring ring 2 to be pushed out. During this process, the visual monitoring module 2 23 and the infrared monitoring module 24 will respectively detect the surface condition and heating condition of the gap between the insulator 4 strings to determine whether there is damage or leakage. If the insulator 4 generates abnormal heat during operation, it is determined that the increase in current is caused by leakage, excluding surface damage.

[0050] Furthermore, if the visual monitoring module 1 22 detects that the surface of the insulator 4 is covered with foreign matter during daily monitoring, the monitoring ring 2 is pushed out to try to remove the foreign matter from the surface of the insulator 4 .

[0051] The regular monitoring unit is used to regularly monitor the status of the insulator 4. In this state, the monitoring ring 2 is pushed by the fixed component 1, and the visual monitoring module 23 and the infrared monitoring module 24 are used to scan the surface of the insulator 4 in all aspects, so as to evaluate its surface condition and leakage condition.

[0052] If the surface of the insulator 4 is excessively covered with impurities and requires cleaning, the monitoring ring 2 is controlled to move to the location requiring cleaning, and the corresponding rotating plate 215 is controlled to adjust the direction of the airflow outlet. Specifically, if a large area of ​​impurities is detected on the surface of the insulator 4, the airflow outlet direction cannot be fixed. In this case, the electromagnetic plate 218 is deenergized, and a periodically changing clockwise and counterclockwise airflow is introduced into the air chamber 212, causing the rotating plate 215 to cyclically deflect. The airflow output presents a sweeping state, and the fixed component 1 pushes the monitoring ring 2 across the surface of the insulator 4, thereby more thoroughly cleaning the surface of the insulator 4.

[0053] Furthermore, if localized impurity coverage is detected on the surface of insulator 4, monitoring ring 2 is controlled to locate the cleaning position, determine the cleaning range, and lock the corresponding semicircular ring 21. The cleaning range is divided into two sides by the center, and the rotating plates 215 adjacent to the cleaning boundary are determined. The rotating plates 215 within the cleaning range are then specifically deflected. By energizing the corresponding electromagnetic plates 218, the rotating plates 215 on either side of the center of the cleaning range are deflected toward the center and remain fixed, concentrating the output airflow within the cleaning range and improving cleaning quality.

[0054] Furthermore, if the infrared monitoring module 24 detects that the surface of the insulator 4 is overheated or overcooled, emergency control of the surface temperature is required to ensure that the insulator 4 can work normally or avoid excessive damage to the insulator 4.

[0055] Specifically, in a humid environment, contamination is more likely to cause an increase in leakage current on the surface of the insulator 4, and even cause a flashover accident. In a cold environment, ice will increase the weight and mechanical load of the insulator 4, and may even cause the insulator 4 to rupture. At this time, the surface of the insulator 4 needs to be dried and heated. Before outputting the airflow, the heat generated is increased by increasing the current flowing through the electromagnetic plate 218. After the airflow is introduced into the air chamber 212, the airflow will carry the heat out to the air chamber 212, and then output it to the surface of the insulator 4 through each through hole 213, thereby achieving a heating effect. When local high temperature appears on the surface of the insulator 4, the cooling can be assisted by continuously outputting airflow to the abnormally high temperature area to avoid the continuous high temperature causing more serious collateral damage to the insulator 4 as a whole. Mark the abnormal position to notify the staff to carry out maintenance and replacement.

[0056] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly 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 aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An insulator condition monitoring device for a power transmission line of a power grid, comprising a fixing component (1) and a monitoring ring (2), characterized in that: The fixing assembly (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 assembly (1) is arranged corresponding to each of the insulators (4), and the monitoring ring (2) is arranged on the fixing assembly (1) and faces the insulator (4) for monitoring 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 a surface of one side of the monitoring ring (2) facing the insulator (4) for surface detection of the daily working state of the insulator (4); and a visual monitoring module (23) and an infrared monitoring module (24) are provided on the inner diameter surface of the semicircular ring (21) for regular detection of the insulator (4).

2. The insulator status monitoring device for a power transmission line of a power grid according to claim 1, characterized in that: The interior of the semicircular ring (21) is provided with an air chamber 1 (211) and an air chamber 2 (212) in sequence from the inside to the outside. The air chamber 1 (211) is provided with a plurality of through holes (213) at intervals on one side facing the insulator (4). A fixing rod (214) is passed through the through hole (213). A rotating plate (215) is sleeved on the fixing rod (214). A torsion spring is connected between the fixing rod (214) and the rotating plate (215).

3. The insulator status monitoring device for power transmission lines of a power grid according to claim 2, characterized in that: The semicircular ring (21) is provided with a deflection groove (216) between the air chamber 1 (211) and the air chamber 2 (212), corresponding to the position of each rotating plate (215); an accordion cover (217) is connected between the two sides of the rotating plate (215) and the deflection groove (216) for isolating the air chamber 1 (211) and the air chamber 2 (212); and a ventilation groove (2151) is provided on the part of the rotating plate (215) located in the air chamber 1 (211).

4. The insulator status monitoring device for power transmission lines of a power grid according to claim 3, characterized in that: The air chamber 1 (211) and the air chamber 2 (212) are respectively connected to an air transmission pipeline, and the semicircular ring (21) is made of insulating material as a whole; an electromagnetic plate (218) is provided in the air chamber 2 (212) to match the deflection position of each rotating plate (215), and the part of the rotating plate (215) located in the air chamber 2 (212) is provided with a magnetic material.

5. The insulator status monitoring device for power transmission lines of a power grid according to claim 4, characterized in that: A gasket (5) is provided on the side of one of the semicircular rings (21) facing away from the insulator (4), and a pressure sensing module is laid on the gasket (5).

6. The insulator status monitoring device for power transmission lines of a power grid according to claim 5, characterized in that: The deflection direction of the rotating plate (215) is used to adjust the output direction of the airflow; When a clockwise airflow is introduced into the second air chamber (212), the rotating plate (215) deflects in the clockwise direction, the electromagnetic plate (218) is energized, and adsorption is performed when the rotating plate (215) is close to it. At this time, the other end of the rotating plate (215) is close to 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 groove (2151) is used for airflow circulation so that the airflow on both sides of the rotating plate (215) can be led out. Similarly, when a counterclockwise airflow is introduced into the second air chamber (212), the rotating plate (215) deflects in the counterclockwise direction, and the other side of the through hole (213) is the airflow output port.

7. The insulator status monitoring device for power transmission lines of a power grid according to claim 6, characterized in that: The air chamber 1 (211) is provided with an air flow input port corresponding to each of the rotating plates (215); the air chamber 2 (212) is externally connected to an air pump 1 (25) and an air pump 2 (26); the air pump 1 (25) and the air pump 2 (26) are respectively provided with corresponding reversing valves; the air flow input port of the air chamber 1 (211) is connected to the air chamber 3 (27).

8. The insulator status monitoring device for power transmission lines of a power grid according to claim 7, characterized in that: In one case, air pump one (25) inhales air from the outside and inputs it into air chamber two (212), and the air flow flows clockwise and is output from another interface to air pump two (26), and air pump two (26) outputs it to air chamber three (27), and then air chamber three (27) uniformly transports it to each air flow input port of air chamber one (211); in another case, air pump two (26) inhales air from the outside and inputs it into air chamber two (212), and the air flow flows counterclockwise and is output from another interface to air pump one (25), and air pump one (25) outputs it to air chamber three (27), and then air chamber three uniformly transports it to each air flow input port of air chamber one (211).

9. The insulator status monitoring device for power transmission lines of a power grid according to claim 8, characterized in that: The fixing assembly (1) is provided with two groups, respectively matched with the corresponding semicircular ring (21), the fixing assembly (1) comprises a shell (11), a slide rail (12) is provided inside the shell (11), 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) is provided with a connecting groove (131), and the shell (11) is provided with a sealing block (131) on one side relative to the connecting groove (131). 4), the sealing block (14) is open toward one side of 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), the sealing block (14) is externally connected to an air pump (16), and the housing (11) is provided with a sealing plate (17) in conjunction with the connecting groove (131) for providing a sealed space for the connecting groove (131) of the slide plate (13).

10. The insulator status monitoring device for power transmission lines of a power grid according to claim 9, characterized in that: The fixing assembly (1) and the monitoring ring (2) are cooperatively provided with a monitoring system, wherein the monitoring system comprises a daily monitoring unit and a periodic monitoring unit. The daily monitoring unit is connected to the visual monitoring module 1 (22) by signal and is used to monitor and evaluate the status of the insulator (4) under daily conditions. The periodic monitoring unit is connected to the visual monitoring module 2 (23) and the infrared monitoring module (24) by signal and is used to monitor and evaluate the status of the insulator (4) on a regular basis.

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