Insulator umbrella skirt repairing method

Abstract

The invention provides an insulator umbrella skirt repairing method. The insulator umbrella skirt repairing method comprises the following steps: preparing a repairing umbrella skirt with the same structural parameters as a damaged umbrella skirt; pretreating the damaged part of the damaged umbrella skirt to form a notch to be repaired; acquiring three-dimensional data of the gap to be repaired; performing model construction according to the three-dimensional data, and generating a three-dimensional model of a repair block matched with the to-be-repaired gap; the three-dimensional model of the repairing block is guided into a control system of a cutting device, and a cutting path is generated; a cutting device is used for cutting the repaired umbrella skirt according to the cutting path, so that a repaired block is obtained; the repairing block is placed in the notch to be repaired; and the repairing block and the damaged umbrella skirt are connected into a whole. According to the technical scheme, the problems that in the prior art, a repairing mode is low in repairing efficiency and poor in repairing effect and repairing quality can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of insulator repair, in particular to an insulator shed repair method. BACKGROUND

[0002] As a core component in high-voltage transmission lines, composite insulators have gradually replaced traditional porcelain and glass insulators since the mid-20th century, becoming the mainstream choice in power systems, thanks to their light weight, high mechanical strength, excellent pollution flashover resistance, and other advantages. Composite insulators generally consist of three parts: a high-strength glass fiber epoxy resin pull rod (core rod), a silicone rubber shed sheath, and a metal connecting piece (fittings). The silicone rubber shed is formed by integral injection or molding process, with a specific umbrella-shaped structure designed on the surface, not only providing the necessary creepage distance, but also having excellent hydrophobicity, aging resistance, and tear resistance, which is a key component to ensure the electrical and mechanical properties of the insulator. However, with the development of power systems towards ultra-high and extra-high voltage, as well as the increasing frequency of extreme weather and environmental pollution, the operation and maintenance of composite insulators face new challenges. On the one hand, during transportation, installation, and long-term operation, the insulator shed is prone to mechanical damage, such as collision during transportation, accidental friction during hoisting, bird impact, hail attack, lightning arc burn, etc., which may cause cracks, perforations, and angle defects in the insulator shed. These damages not only destroy the integrity of the insulator shed, but also significantly reduce its mechanical carrying capacity (such as tensile strength, tear strength, etc.) and electrical performance (such as surface resistance, arc resistance, etc.); on the other hand, damaged insulator sheds are more likely to form partial discharge channels in polluted environments (such as coastal salt spray, industrial dust, heavy pollution areas, etc.), accelerating the aging of silicone rubber materials, and further causing pollution flashover accidents. According to statistics, about 15%~25% of the total insulator failure rate is caused by the damage of composite insulator sheds, resulting in direct economic losses and power outage losses of up to 8 billion~12 billion yuan, seriously threatening the safe and stable operation of the power grid.

[0003] A kind of on-site repair method of broken composite insulator umbrella skirt and quick repair glue are disclosed in Chinese patent 201710898617.3, the method needs to prepare the high-temperature vulcanized composite insulator umbrella skirt quick repair glue, it is made into lump-like plasticity colloid, transported to the work site, then the composite insulator umbrella skirt quick repair glue is pressed into the approximate shape of broken missing part, and its surface contacts the surface of broken part;Using the tool pair of composite insulator umbrella skirt quick repair glue to pressurize to broken part, the composite insulator umbrella skirt quick repair glue is filled in broken part and compacted, and the surface of its contact broken part is in close contact with the surface of contact broken part;The broken part is heated at high temperature, while the quick repair glue filled in the broken part of composite insulator umbrella skirt is heated, so that the material of original broken part and quick repair glue crosslinking occur.The above method can realize the repair of broken umbrella skirt, but the curing time of repair glue is too long, which is not conducive to the quick repair of composite insulator performance and appearance, resulting in longer power outage time, and the repair glue can only be pressed into the approximate shape of broken missing part by using tools, the adaptability of repair glue and the part to be repaired is poor, and the repair effect and repair quality are poor. SUMMARY

[0004] The main purpose of the present application is to provide an insulator umbrella skirt repair method, which can solve the problems of low repair efficiency, poor repair effect and poor repair quality of the repair method of the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides an insulator umbrella skirt repair method, comprising: preparing a repair umbrella skirt with the same structural parameters as the broken umbrella skirt;Pretreat the broken part of the broken umbrella skirt to form a repaired gap;Obtain the three-dimensional data of the repaired gap;According to the three-dimensional data, a three-dimensional model of a repair block is generated;The three-dimensional model of the repair block is imported into the control system of the cutting device, and the cutting path is generated;The repair umbrella skirt is cut according to the cutting path by using the cutting device to obtain the repair block;Place the repair block in the repaired gap;Make the repair block and the broken umbrella skirt into one.

[0006] Further, the broken umbrella skirt includes at least one broken umbrella piece, and the structural parameters of the broken umbrella skirt include the material of the broken umbrella piece, the diameter of the broken umbrella piece before breaking, the thickness and the shape.

[0007] Further, the step of pretreating the broken part of the broken umbrella skirt to form a repaired gap includes: judging the broken type of the broken part of the broken umbrella skirt;According to the broken type, the corresponding processing method is adopted to form the repaired gap.

[0008] Further, the damage type includes a crack, a perforation and an angle defect, if the damage type is the crack, the area where the crack is located is cut to form a circular notch, and then the inner circumferential surface of the circular notch is planed to form the repaired notch; if the damage type is the perforation, the inner circumferential surface of the perforation is planed to form the repaired notch; if the damage type is the angle defect, the inner circumferential surface of the angle defect is planed to form the repaired notch.

[0009] Further, if the damage type is the angle defect, the step of planing the inner circumferential surface of the angle defect includes: cleaning the inner circumferential surface of the angle defect; and cutting the inner circumferential surface of the cleaned angle defect to form the repaired notch surrounded by at least three planes.

[0010] Further, the planes surrounding the repaired notch are all inclined planes, the inclined planes are inclined to the horizontal plane by a preset angle α, and the value range of α is 43°≤α≤47°.

[0011] Further, the step of placing the repair block in the repaired notch includes: performing a gluing operation on at least one of the outer circumferential surface of the repair block and the inner circumferential surface of the repaired notch.

[0012] Further, the step of connecting the repair block and the damaged canopy skirt into one includes: heating the bonding area between the repair block and the damaged canopy skirt, and pressing the repair block to keep the outer circumferential surface of the repair block and the inner circumferential surface of the repaired notch in close contact during the heating of the bonding area between the repair block and the damaged canopy skirt.

[0013] Further, the heating temperature of the bonding area between the repair block and the damaged canopy skirt ranges from 40° to 50°, and the heating time ranges from 1 min to 2 min.

[0014] By applying the technical scheme of the present application, a repair canopy skirt with the same structure parameters as the damaged canopy skirt is prepared, and during the repair, only the repair block is cut according to the specific situation of the damaged part to form the repair block, and then the repair block is directly placed in the damaged part to connect the two into one, without the need to compress the repair glue from a lump into an irregular shape and then perform a long-time high-temperature heating and curing as in the prior art. Since the repair canopy skirt itself is a solid state, the subsequent connection process is simple and fast, and the repair time can be greatly shortened. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings constituting a part of the specification of the present application are used to provide a further understanding of the present application, and the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0016] Fig. 1A flowchart illustrating an embodiment of the insulator skirt repair method of the present invention is shown;

[0017] Fig. 2 A schematic diagram of the structure of a damaged umbrella skirt according to an embodiment of the present invention is shown;

[0018] Fig. 3 A schematic diagram of the structure of a repair block according to an embodiment of the present invention is shown;

[0019] Fig. 4 A schematic diagram of the structure of a repaired damaged umbrella skirt according to an embodiment of the present invention is shown.

[0020] The above figures include the following reference numerals:

[0021] 10. Damaged umbrella skirt; 11. Damaged umbrella panel; 20. Repair block; 30. Gap to be repaired. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] like Figs. 1 to 4 As shown, the present invention provides a method for repairing insulator skirts. The method includes: preparing a repair skirt with the same structural parameters as the damaged skirt 10; pre-processing the damaged portion of the damaged skirt 10 to form a gap 30 to be repaired; acquiring three-dimensional data of the gap 30 to be repaired; constructing a model based on the three-dimensional data and generating a three-dimensional model of a repair block 20 adapted to the gap 30 to be repaired; importing the three-dimensional model of the repair block 20 into the control system of a cutting device and generating a cutting path; using the cutting device to cut the repair skirt according to the cutting path to obtain the repair block 20; placing the repair block 20 on the gap 30 to be repaired; and connecting the repair block 20 and the damaged skirt 10 together.

[0024] In this embodiment, a repair skirt identical to the damaged umbrella skirt 10 is prepared according to its structural parameters. This repair skirt can be prepared in advance and brought directly to the repair site for subsequent operations. When repairing the damaged umbrella skirt 10, the damaged area needs to be pre-treated (e.g., cleaning dirt, debris, and aging layers from the damaged area, and grinding and cutting the damaged area). After pre-treatment, a repair gap 30 is formed. The repair skirt is cut to fit the size and shape of the pre-treated repair gap 30. Then, a repair block 20 is placed at the position of the repair gap 30. Finally, the repair block 20 is connected to the damaged umbrella skirt 10 to achieve the repair of the damaged area.

[0025] The steps of cutting and repairing the umbrella skirt to form a shape that matches the gap 30 to be repaired include: constructing a model based on 3D data and generating a 3D model of the repair block 20 that matches the gap 30; importing the 3D model of the repair block 20 into the control system of the cutting device and generating a cutting path; and using the cutting device to cut the umbrella skirt according to the cutting path to obtain the repair block 20. Obtaining the 3D data of the gap 30 to be repaired provides accurate data support for subsequent model construction and the design of the repair block 20, ensuring that the repair block 20 perfectly matches the gap. Constructing a model based on the 3D data and generating a 3D model of the repair block 20 that matches the gap 30 allows for a visual preview of the matching between the repair block 20 and the gap 30. The control system generates a cutting path based on the 3D model data. Through the generated cutting path, the subsequent cutting device can accurately cut the umbrella skirt, reducing material waste and ensuring that the shape of the repair block 20 matches the gap 30, thereby significantly improving the repair effect and quality.

[0026] Meanwhile, this application prepares a repair skirt with identical structural parameters to the damaged skirt 10. During repair, it is only necessary to cut the skirt to form a repair block 20 according to the specific condition of the damaged area, and then directly place the repair block 20 on the damaged area to connect the two together. In contrast, existing technologies use repair adhesive, which is malleable. When using repair adhesive, it needs to be pressed from a lump into the approximate shape of the damaged and missing part. Since the shape of the damaged part may be irregular, this process is time-consuming. Furthermore, the repair adhesive requires high temperature and long curing time, which is detrimental to the insulator's performance. Rapid repair of the appearance, especially for insulators that are energized, is detrimental to power supply safety. However, this application eliminates the need for pressing the repair adhesive from a lump into an irregular shape and then subjecting it to prolonged high-temperature curing, as required by existing technologies. Since the repair skirt itself is already solid, the subsequent connection process is simple and quick, significantly shortening the repair time. Furthermore, because the structural parameters of the repair skirt are completely identical to those of the original skirt, the performance of the repaired skirt remains consistent with the original skirt, eliminating the need for additional performance testing or adjustments, such as measuring electrical insulation performance or mechanical strength. This further shortens the repair time and significantly improves repair efficiency.

[0027] It should be noted that existing methods for repairing composite insulators with substandard umbrella leaf appearance that are not connected to the grid typically involve returning them to the manufacturer for on-machine repair. For composite insulators already connected to the grid with severely substandard umbrella leaf appearance, power outages are usually required for replacement. These repair methods are costly. For example, the repair method for insulators already connected to the grid involves using a specialized composite insulator skirt quick-repair adhesive, pressing it into the approximate shape of the damaged area and compacting it. The repaired area is then heated at high temperature to allow the adhesive to fuse with the original material. RTV coating is then sprayed to clean the insulator surface of dirt and powdery layers, and the coating is evenly sprayed. After curing, the coating surface is inspected. The repair method for insulators not connected to the grid involves sending the insulator back to the factory for repair using production molds or specialized repair molds to ensure repair quality.

[0028] The insulator skirt repair method of this application eliminates the need to return defective products to the factory, shortens on-site repair time, and reduces power outage time caused by skirt damage. The insulator skirt repair method of this application has the following advantages:

[0029] 1) It can complete the repair work in a short time, quickly restore the normal operation of the insulator, reduce power outage time, and improve power supply reliability;

[0030] 2) Rapid online repair avoids economic losses caused by prolonged power outages, especially on critical lines or during peak load periods, where its economic benefits are particularly significant;

[0031] 3) Simple and efficient operation: The repair process is simple and does not require complicated equipment and tools, which improves work efficiency and reduces labor intensity;

[0032] 4) Applicable to all types of composite insulators, effectively repairing issues such as damaged skirts, surface dirt, or other appearance problems;

[0033] 5) It has strong environmental adaptability; the restoration work can be carried out under various weather conditions and is not limited by the environment, thus having strong adaptability.

[0034] 6) High economic benefits: Rapid online repair reduces the frequency of insulator replacement, lowers maintenance costs, and avoids indirect losses caused by power outages, resulting in high economic benefits.

[0035] 7) Reduced manual operation: The operation of manually fixing the repair mold is not required during the heating repair and cooling molding process, which reduces the manual operation process.

[0036] In addition, the damaged umbrella skirt 10 includes at least one damaged umbrella piece 11, which may be a single damaged umbrella piece 11 or multiple damaged umbrella pieces 11. The repaired umbrella skirt includes at least one repaired umbrella piece. The structural parameters of the repaired umbrella skirt are the same as those of the damaged umbrella skirt 10. That is to say, the repaired umbrella piece is exactly the same in size, shape and material as the damaged umbrella piece 11.

[0037] In one embodiment of the present invention, the damaged umbrella skirt 10 includes at least one damaged umbrella piece 11, and the structural parameters of the damaged umbrella skirt 10 include the material of the damaged umbrella piece 11, the diameter, thickness and shape of the damaged umbrella piece 11 before it is damaged.

[0038] In this embodiment, the material of the damaged shed 11 is the same as that of the repaired shed skirt, ensuring that the repaired shed skirt maintains the same electrical insulation and mechanical properties as the original shed skirt. This preserves the original performance characteristics of the insulator and guarantees the safe and stable operation of the power system. The structural parameters of the damaged shed skirt 10 also include the diameter, thickness, and shape of the damaged shed 11 before damage, ensuring that the repaired shed skirt can be precisely cut to match the damaged area, reducing errors during the repair process and improving repair quality and efficiency. Furthermore, since the material of the repaired shed skirt is completely identical to the original shed skirt in the above structural parameters, the repaired insulator can quickly recover its original performance without the need for additional performance tests, such as surface resistance and arc resistance. This further saves time on post-repair inspection and verification. The immediate recovery of performance also ensures that the insulator can be put into operation immediately, reducing power outage time caused by shed damage.

[0039] In one embodiment of the present invention, the step of pre-processing the damaged portion of the damaged umbrella skirt 10 to form a gap 30 to be repaired includes: determining the damage type of the damaged portion of the damaged umbrella skirt 10; and taking corresponding processing methods according to the damage type to form a gap 30 to be repaired.

[0040] In this embodiment, by accurately determining the type of damage to the damaged part, the most suitable repair method can be selected to ensure repair efficiency and enable the repaired skirt to be quickly restored to normal, thus meeting the safety and performance requirements of the power system operation.

[0041] In one embodiment of the present invention, the damage types include cracks, perforations, and missing corners. If the damage type is a crack, the area where the crack is located is cut off to form a circular notch, and then the inner circumferential surface of the circular notch is machined to form a notch 30 to be repaired. If the damage type is a perforation, the inner circumferential surface of the perforation is machined to form a notch 30 to be repaired. If the damage type is a missing corner, the inner circumferential surface of the missing corner is machined to form a notch 30 to be repaired.

[0042] In this embodiment, if the damage type is a crack, the area where the crack is located is cut off to form a circular notch, which can effectively prevent the crack from expanding further and avoid the crack from reappearing during or after the repair process, thus improving the stability and durability of the repair. Furthermore, the inner circumferential surface of the circular notch is flattened to form a regular plane, which facilitates the quick connection with the damaged umbrella skirt 10 after the repair is completed.

[0043] If the damage type is perforation, the inner circumferential surface of the perforation is flattened to remove burrs and contaminants from the perforation edge, improving the cleanliness of the inner circumferential surface. Flattening also facilitates the subsequent connection between the repair block 20 and the damaged umbrella skirt 10. Similarly, if the damage type is a missing corner, the inner circumferential surface of the missing corner is flattened to remove burrs and contaminants, improving the cleanliness of the inner circumferential surface. Flattening also facilitates the subsequent connection between the repair block 20 and the damaged umbrella skirt 10.

[0044] In one embodiment of the present invention, if the damage type is a missing corner, the step of cutting the inner peripheral surface of the missing corner includes: cleaning the inner peripheral surface of the missing corner; cutting the cleaned inner peripheral surface of the missing corner so that the inner peripheral surface of the missing corner forms a notch 30 to be repaired, which is surrounded by at least three planes.

[0045] In this embodiment, by cleaning the inner circumferential surface of the missing corner, dust, oil stains and possible aging layers can be effectively removed from the inner circumferential surface of the missing corner. The inner circumferential surface of the missing corner is flattened to form a gap 30 to be repaired surrounded by at least three planes. This not only facilitates the subsequent cutting of the repaired umbrella skirt into a shape that matches the gap 30 to be repaired, reducing the cutting difficulty and improving the repair efficiency, but also can repair the connection area between the repair block 20 and the damaged umbrella skirt 10, ensuring the connection stability between the two.

[0046] In one embodiment of the present invention, the planes surrounding the gap 30 to be repaired are all inclined planes, and the inclined planes are tilted at a preset angle α relative to the horizontal plane, with the value of α ranging from 43°≤α≤47°.

[0047] In this embodiment, the beveled design increases the surface area of ​​the repair block 20 in contact with the notch 30 to be repaired, which can ensure the stability of the connection between the two.

[0048] In one embodiment, 3D data of the repair gap can be obtained using a 3D scanner, laser scanner, or similar means. Model construction based on the 3D data can be performed using software such as SolidWorks or UG. The cutting device can be a CNC cutting machine or laser cutting machine, which are based on existing technologies.

[0049] In one embodiment of the present invention, placing the repair block 20 before the step of repairing the notch 30 includes applying adhesive to at least one of the outer peripheral surface of the repair block 20 and the inner peripheral surface of the notch 30 to be repaired.

[0050] In this embodiment, at least one of the outer peripheral surface of the repair block 20 and the inner peripheral surface of the gap 30 to be repaired is applied with adhesive to connect the repaired umbrella skirt to the damaged umbrella skirt 10 as a whole.

[0051] In one embodiment of the present invention, the step of connecting the repair block 20 and the damaged umbrella skirt 10 together includes: heating the bonding area between the repair block 20 and the damaged umbrella skirt 10, and during the heating of the bonding area between the repair block 20 and the damaged umbrella skirt 10, squeezing the repair block 20 so that the outer peripheral surface of the repair block 20 is in contact with the inner peripheral surface of the gap 30 to be repaired.

[0052] In this embodiment, heating the bonding area between the repair block 20 and the damaged skirt 10 can accelerate the adhesive curing process and improve repair efficiency. The combination of heating and extrusion significantly shortens the entire repair process time. Compared with traditional methods that require a long time for natural curing, it can quickly achieve bonding and curing, reduce the time that the insulator is out of service due to repair, and improve the reliability of power grid operation.

[0053] In one embodiment of the present invention, the heating temperature for heating the bonding area between the repair block 20 and the damaged umbrella skirt 10 is in the range of 40°~50°, and the heating time is in the range of 1min~2min.

[0054] The above settings ensure that the adhesive reaches a sufficient degree of curing in a short time, thereby guaranteeing the bonding strength between the repair block 20 and the damaged umbrella skirt 10. At the same time, they prevent the material properties from deteriorating or deforming due to excessive temperature, ensuring that the performance of the repaired part remains consistent with that of the original material.

[0055] In one embodiment of the present invention, a rechargeable intelligent temperature-controlled clamp is used to heat the bonding area between the repair block 20 and the damaged skirt 10. This allows the repair block 20 to be quickly and stably fixed to the damaged area, thereby improving the repair efficiency. Since the relative position between the clamp and the insulator is stable, the repair quality of the damaged skirt 10 can be better guaranteed.

[0056] It should be noted that the rechargeable intelligent temperature-controlled clamp can use existing technology, and the specific structure will not be described here.

[0057] In one embodiment of the present invention, the outer peripheral surface of the repair block 20 is bonded to the inner peripheral surface of the notch 30 to be repaired using weather-resistant adhesive. When applying the adhesive, it is necessary to ensure that the adhesive layer is completely covered and free of air bubbles to guarantee the bonding effect. After the weather-resistant adhesive has cured, the bonded area needs to be inspected to ensure the interface bonding strength and sealing performance, thereby ensuring that the repaired insulator restores its original performance.

[0058] As can be seen from the above description, the above embodiments of the present invention achieve the following technical effects: by preparing a repair skirt with the same structural parameters as the damaged skirt, during repair, it is only necessary to cut it into repair blocks according to the specific situation of the damaged part, and then directly place the repair blocks on the damaged part to connect the two into one. There is no need to press the repair adhesive from a lump into an irregular shape and then perform long-term high-temperature heating and curing as in the prior art. Since the repair skirt itself is already solid, the subsequent connection process is simple and fast, which can greatly shorten the repair time.

[0059] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0060] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for repairing insulator skirts, characterized in that, include: Prepare a repaired umbrella skirt with the same structural parameters as the damaged umbrella skirt (10); The damaged part of the damaged umbrella skirt (10) is pre-treated to form a gap (30) to be repaired. Obtain the three-dimensional data of the notch (30) to be repaired; A model is constructed based on the three-dimensional data, and a three-dimensional model of the repair block (20) that is adapted to the gap (30) to be repaired is generated; The three-dimensional model of the repair block (20) is imported into the control system of the cutting device, and a cutting path is generated; The repair umbrella skirt is cut according to the cutting path using the cutting device to obtain the repair block (20). Place the repair block (20) on the gap to be repaired (30); The repair block (20) is connected to the damaged umbrella skirt (10) as a whole.

2. The insulator skirt repair method according to claim 1, characterized in that, The damaged umbrella skirt (10) includes at least one damaged umbrella piece (11), and the structural parameters of the damaged umbrella skirt (10) include the material of the damaged umbrella piece (11), the diameter, thickness and shape of the damaged umbrella piece (11) before it is damaged.

3. The insulator skirt repair method according to claim 1 or 2, characterized in that, The steps of pre-treating the damaged portion of the damaged umbrella skirt (10) to form a gap (30) to be repaired include: Determine the type of damage to the damaged part of the damaged umbrella skirt (10); According to the type of damage, the corresponding treatment method is adopted to form the gap to be repaired (30).

4. The insulator skirt repair method according to claim 3, characterized in that, The damage types include cracks, perforations, and missing corners. If the damage type is a crack, the area where the crack is located is cut off to form a circular notch, and then the inner circumferential surface of the circular notch is shaped to form the notch to be repaired (30). If the damage type is a perforation, the inner circumferential surface of the perforation is shaped to form the notch to be repaired (30). If the damage type is a missing corner, the inner circumferential surface of the missing corner is shaped to form the notch to be repaired (30).

5. The insulator skirt repair method according to claim 4, characterized in that, If the damage type is a missing corner, the step of planing the inner circumferential surface of the missing corner includes: Clean the inner circumferential surface of the missing corner; The inner circumferential surface of the cleaned corner is cut to form the notch to be repaired (30) surrounded by at least three planes.

6. The insulator skirt repair method according to claim 5, characterized in that, All planes that form the gap (30) to be repaired are inclined planes, and the inclined planes are inclined at a preset angle α relative to the horizontal plane. The value of α is 43°≤α≤47°.

7. The method for repairing insulator skirts according to claim 1 or 2, characterized in that, The step of placing the repair block (20) on the notch to be repaired (30) includes applying adhesive to at least one of the outer peripheral surface of the repair block (20) and the inner peripheral surface of the notch to be repaired (30).

8. The method for repairing insulator skirts according to claim 7, characterized in that, The steps of connecting the repair block (20) and the damaged umbrella skirt (10) together include: The bonding area between the repair block (20) and the damaged umbrella skirt (10) is heated, and during the heating process, the repair block (20) is squeezed so that the outer peripheral surface of the repair block (20) is in contact with the inner peripheral surface of the gap to be repaired (30).

9. The method for repairing insulator skirts according to claim 8, characterized in that, The heating temperature range for heating the bonding area between the repair block (20) and the damaged umbrella skirt (10) is 40°~50°, and the heating time ranges from 1min to 2min.

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