CN-121998612-A - Evaluation and repair method and system for composite sleeve umbrella skirt

CN121998612ACN 121998612 ACN121998612 ACN 121998612ACN-121998612-A

Abstract

The invention provides an evaluation and repair method and system for a composite sleeve umbrella skirt, comprising the steps of detecting and evaluating the current aging state of the composite sleeve umbrella skirt to obtain an aging grade; setting a repair decision according to the aging grade, and repairing the composite sleeve umbrella skirt according to the result of the repair decision. Through the step processing, the assessment and repair method breaks through the limitations of detection dispersion, assessment subjectivity and repair manual in the prior art, establishes a standardized grading assessment and decision mechanism, builds a full-flow automatic repair system, can realize automatic and accurate assessment of the ageing state of the composite sleeve umbrella skirt, intelligent self-adaptive execution of the repair process and closed-loop verification of the repair effect, and realizes the standardization, automation and accuracy of ageing repair of the composite sleeve umbrella skirt, thereby greatly reducing operation and maintenance cost and manual dependence on the premise of guaranteeing repair quality and improving repair efficiency and quality caused by the composite sleeve umbrella skirt.

Inventors

CHEN YUN
HAN YU
WANG XIAOFANG
LU YILIANG
YANG BINGKUN
ZHANG QIANG
ZHANG LI
GAO SONG
HUANG XINYU

Assignees

中国电力科学研究院有限公司
国网江苏省电力有限公司电力科学研究院
国家电网有限公司

Dates

Publication Date: 20260508
Application Date: 20251226

Claims (18)

1. An evaluation and repair method for a composite sleeve umbrella skirt, which is characterized by comprising the following steps: Detecting and evaluating the current aging state of the composite sleeve umbrella skirt to obtain an aging grade; setting a repair decision according to the ageing grade; and repairing the composite sleeve umbrella skirt according to the repairing decision result.
2. The method for evaluating and repairing a composite casing umbrella skirt according to claim 1, wherein the aging level comprises a hydrophobicity level, a pulverization level and a cracking level, and the detecting and evaluating the current aging state of the composite casing umbrella skirt to obtain the aging level comprises: Detecting the hydrophobicity grade of the surface of the umbrella skirt of the composite sleeve and evaluating the current hydrophobicity grade; Detecting the pulverization grade of the surface of the umbrella skirt of the composite sleeve and evaluating the current pulverization grade; and detecting the cracking grade of the surface of the umbrella skirt of the composite sleeve and evaluating the current cracking grade.
3. The method for evaluating and repairing a composite casing umbrella skirt according to claim 2, wherein the detecting the hydrophobicity level of the surface of the composite casing umbrella skirt and evaluating the current hydrophobicity level comprises: spraying water mist to the surface of the umbrella skirt of the composite sleeve by utilizing an atomization nozzle; acquiring a surface water mist adhesion image of the composite sleeve umbrella skirt after spraying water; and carrying out image recognition processing on the surface water mist adhesion image, evaluating the water mist adhesion state, and outputting the hydrophobicity grade according to the water mist adhesion state.
4. The method for evaluating and repairing a composite sleeve umbrella skirt according to claim 3, wherein the spraying water mist to the surface of the composite sleeve umbrella skirt by using an atomizing nozzle comprises: The distance between the atomizing nozzle and the surface of the umbrella skirt of the composite sleeve is 20cm-30cm, the spray water flow opening angle of the atomizing nozzle is 50-70 degrees, the spray water quantity is 0.7-1 mL/time, the water is sprayed 1-3 times per second, and the spray time is 20s-30s.
5. The method for evaluating and repairing a composite casing umbrella skirt according to claim 3, wherein the acquiring the surface water mist adhesion image of the composite casing umbrella skirt after spraying water comprises: and the interval time after water spraying is not more than 25-35 s, and the surface water mist adhesion image of the composite sleeve umbrella skirt is obtained.
6. The method for evaluating and repairing a composite casing umbrella skirt according to claim 2, wherein the detecting the pulverization level of the surface of the composite casing umbrella skirt and evaluating the current pulverization level comprises: Pressing wiping cloth on the surface of the composite sleeve umbrella skirt with set pressure, and rotationally wiping the surface of the composite sleeve umbrella skirt by utilizing the wiping cloth; Acquiring a surface residue image of the wipe; And performing image recognition processing on the surface residue image, evaluating the residue adhesion quantity on the wiping cloth, and outputting the pulverization grade according to the residue adhesion quantity.
7. The method for evaluating and repairing a composite cannula shed as in claim 6, wherein said pressing a wipe against a surface of the composite cannula shed at a set pressure and rotationally wiping the surface of the composite cannula shed with the wipe comprises: The set pressure is 2N-4N, the contact surface area of the wiping cloth and the composite sleeve umbrella skirt is 1.5cm multiplied by 1.5cm-2.5cm multiplied by 2.5cm, and the wiping cloth is removed from the surface of the composite sleeve umbrella skirt after rotating 180-360 degrees.
8. The method for evaluating and repairing a composite casing umbrella skirt according to claim 2, wherein the detecting the cracking level of the surface of the composite casing umbrella skirt and evaluating the current cracking level comprises: acquiring a micro-distance enlarged image of the surface of the umbrella skirt of the composite sleeve after wiping; And carrying out image recognition processing and deep learning algorithm processing on the macro amplified image, evaluating the distribution and depth of cracks on the surface of the umbrella skirt of the composite sleeve, and outputting the cracking grade according to the distribution and depth state of the cracks.
9. The method for evaluating and repairing a composite casing umbrella skirt according to claim 2, wherein the setting of a repair decision according to the result of the aging level comprises: The hydrophobic grade fraction is HC1-HC7, the pulverization grade fraction is F0-F4, and the cracking grade fraction is K1-K3: when the current hydrophobicity level is positioned between HC1 and HC4, the current pulverization level is positioned between F0 and F2, and the current cracking level is positioned between K0 and K1, the repairing decision is that repairing treatment is not carried out on the composite sleeve umbrella skirt, and the output result is recorded as J1; When the current hydrophobicity level is between HC5 and HC7, the current pulverization level is between F0 and F2, and the current cracking level is between K0 and K1, the repair decision is to clean the umbrella skirt of the composite sleeve, and the output result is recorded as J2; When the current hydrophobicity level is between HC1 and HC4, the current pulverization level is between F3 and F4, and the current cracking level is between K2 and K3, performing aging layer removal treatment and surface coating treatment on the composite sleeve umbrella skirt, and recording an output result as J3; When the current hydrophobicity level is between HC5 and HC7, the current pulverization level is between F3 and F4, and the current cracking level is between K2 and K3, the repairing decision is that the composite sleeve umbrella skirt is subjected to ageing layer removal treatment and surface coating treatment, and the output result is recorded as J4.
10. The method for evaluating and repairing a composite casing umbrella skirt according to claim 9, wherein the repairing the composite casing umbrella skirt according to the result of the repairing decision comprises: And when the output result of the restoration decision is J2, the restoration treatment adopts a cleaning agent cleaning method, a pressure water flushing method, a laser cleaning method or a dry ice cleaning method to clean the surface of the composite sleeve umbrella skirt so as to restore the hydrophobicity of the surface of the composite sleeve umbrella skirt.
11. The method for evaluating and repairing a composite casing umbrella skirt according to claim 9, wherein the repairing the composite casing umbrella skirt according to the result of the repairing decision comprises: When the output result of the repair decision is J3 or J4, the repair treatment adopts a mechanical cleaning method, a dry ice removal method or a laser pulse method to remove surface dirt, a chalking layer and unstable-adhesion aged silicone rubber of the composite sleeve umbrella skirt so as to realize the removal treatment of the aged layer; And when the ageing layer is removed and treated until no pulverization layer exists, spraying vulcanized silicone rubber coating to cover the surface of the umbrella skirt of the composite sleeve, and naturally drying to realize surface coating treatment.
12. An evaluation repair system for a composite cannula shed, comprising: the detection evaluation module is used for detecting and evaluating the current aging state of the composite sleeve umbrella skirt to obtain an aging grade; The decision module is used for setting a repair decision according to the ageing grade; and the repair module is used for repairing the composite sleeve umbrella skirt according to the repair decision result.
13. The evaluation repair system for a composite casing umbrella of claim 12, wherein the detection evaluation module comprises: The hydrophobicity detection evaluation unit is used for detecting the hydrophobicity grade of the surface of the umbrella skirt of the composite sleeve and evaluating the current hydrophobicity grade; the pulverization detection evaluation unit is used for detecting pulverization grades on the surface of the umbrella skirt of the composite sleeve and evaluating the current pulverization grades; And the crack detection and evaluation unit is used for detecting the cracking grade of the surface of the umbrella skirt of the composite sleeve and evaluating the current cracking grade.
14. The evaluation repair system for a composite casing umbrella skirt of claim 13, wherein the hydrophobicity detection evaluation unit comprises: the water mist sprayer is used for spraying water mist to the surface of the composite sleeve umbrella skirt by utilizing the atomizing nozzle; The first camera is used for acquiring a surface water mist adhesion image of the composite sleeve umbrella skirt after water spraying; And the first image processor is used for carrying out image recognition processing on the surface water mist adhesion image, evaluating the water mist adhesion state and outputting the hydrophobicity grade according to the water mist adhesion state.
15. The evaluation repair system for a composite casing umbrella skirt of claim 13, wherein the chalking detection evaluation unit comprises: The rotary wiping cloth pressing head is used for pressing wiping cloth on the surface of the composite sleeve umbrella skirt with set pressure and rotationally wiping the surface of the composite sleeve umbrella skirt by utilizing the wiping cloth; The second camera is used for acquiring the surface residue image of the wiping cloth; And a second image processor for performing image recognition processing on the surface residue image and evaluating the residue adhesion amount on the wipe, and outputting the pulverization level according to the residue adhesion amount.
16. The evaluation repair system for a composite casing umbrella skirt of claim 13, wherein the crack detection evaluation unit comprises: the third camera is used for acquiring a micro-distance enlarged image of the surface of the umbrella skirt of the composite sleeve after wiping; And the third image processor is used for carrying out image recognition processing and deep learning algorithm processing on the macro amplification image, evaluating the distribution and depth of cracks on the surface of the umbrella skirt of the composite sleeve, and outputting the cracking grade according to the distribution and depth of the cracks.
17. The evaluation and repair system for composite cannula shed as in claim 13, wherein, The hydrophobic grade fraction is HC1-HC7, the pulverization grade fraction is F0-F4, and the cracking grade fraction is K1-K3: When the decision module obtains that the current hydrophobicity level output by the hydrophobicity detection evaluation unit is positioned between HC1 and HC4, the current pulverization level output by the pulverization detection evaluation unit is positioned between F0 and F2, and the current cracking level output by the crack detection evaluation unit is positioned between K0 and K1, the restoration decision of the decision module is that restoration processing is not performed on the composite sleeve umbrella skirt, and the output result is recorded as J1; When the decision module obtains that the current hydrophobicity level output by the hydrophobicity detection evaluation unit is positioned between HC5 and HC7, the current pulverization level output by the pulverization detection evaluation unit is positioned between F0 and F2, and the current cracking level output by the crack detection evaluation unit is positioned between K0 and K1, the restoration decision of the decision module is to clean the composite sleeve umbrella skirt, and the output result is recorded as J2; When the decision module obtains that the current hydrophobicity level output by the hydrophobicity detection evaluation unit is positioned in HC1-HC4, the current pulverization level output by the pulverization detection evaluation unit is positioned in F3-F4, and the current cracking level output by the crack detection evaluation unit is positioned in K2-K3, the restoration decision of the decision module is to perform ageing layer removal treatment and surface coating treatment on the composite sleeve umbrella skirt, and the output result is recorded as J3; When the decision module obtains that the current hydrophobicity level output by the hydrophobicity detection evaluation unit is located between HC5 and HC7, the current pulverization level output by the pulverization detection evaluation unit is located between F3 and F4, and the current cracking level output by the crack detection evaluation unit is located between K2 and K3, the restoration decision of the decision module is to perform ageing layer removal treatment and surface coating treatment on the composite sleeve umbrella skirt, and the output result is recorded as J4.
18. The evaluation repair system for a composite casing umbrella of claim 17, wherein the repair module comprises: the cleaning unit is used for cleaning the surface of the composite sleeve umbrella skirt by adopting a cleaning agent cleaning method, a pressure water flushing method, a laser cleaning method or a dry ice cleaning method when the output result of the decision module is J2, so as to recover the hydrophobicity of the surface of the composite sleeve umbrella skirt; When the output result of the decision module is J3 or J4, adopting a mechanical cleaning method, a dry ice removing method or a laser pulse method to remove surface dirt, a chalking layer and unstable-adhesion aged silicone rubber of the composite sleeve umbrella skirt so as to realize the aged layer removing treatment; And the coating unit is used for spraying vulcanized silicone rubber coating to cover the surface of the umbrella skirt of the composite sleeve and naturally drying to realize surface coating treatment when the ageing layer is removed and treated until no chalking layer exists.

Description

Evaluation and repair method and system for composite sleeve umbrella skirt Technical Field The invention relates to the technical field of composite sleeve repair, and particularly provides an evaluation and repair method and system for a composite sleeve umbrella skirt. Background The composite sleeve is used as a key insulating part of power equipment, and the umbrella skirt is exposed to outdoor complex environments for a long time, is easy to age due to factors such as ultraviolet radiation, temperature and humidity alternation, pollutant attachment and the like, and is particularly characterized by phenomena such as hydrophobicity reduction, surface chalking and cracking. The aging problems can obviously reduce the insulating property of the sleeve, shorten the service life, increase the risks of pollution flashover, creeping discharge and the like, and seriously threaten the safe and stable operation of the power system. Because of high replacement cost of the composite sleeve, aiming at the aging problem of the composite sleeve umbrella skirt, the aging umbrella skirt is usually repaired by adopting modes of on-site manual cleaning, painting repair paint and the like so as to prolong the service life of the composite sleeve umbrella skirt. However, the existing field repair technology has a plurality of limitations, and is difficult to meet the high-quality operation and maintenance requirements of an electric power system, firstly, the ageing degree assessment depends on manual judgment, a standardized and automatic detection means is lacked, operation and maintenance personnel can not accurately distinguish different ageing grades through visual inspection of the umbrella skirt surface state or manual operation, so that the repair measures are excessive or insufficient, secondly, the automation degree of the repair process is low, the labor intensity is high, the operation efficiency is low, the repair quality is difficult to ensure, and the conventional composite sleeve umbrella skirt operation and maintenance technology is difficult to adapt to the development trend. The existing automatic repairing equipment focuses on a single repairing process (such as automatic cleaning or automatic coating) and does not form a full-flow automatic repairing system covering surface pretreatment, repairing construction and effect rechecking. Disclosure of Invention The invention aims to solve the problems of poor repair efficiency and repair quality caused by manual dependency of the existing system maintenance composite sleeve umbrella skirt. The invention aims at realizing the following technical scheme: The invention provides an evaluation and repair method for a composite sleeve umbrella skirt, which comprises the steps of detecting and evaluating the current aging state of the composite sleeve umbrella skirt to obtain an aging grade, setting a repair decision according to the aging grade, and repairing the composite sleeve umbrella skirt according to the repair decision result. Preferably, the ageing grades comprise a hydrophobicity grade, a pulverization grade and a cracking grade, the ageing grade is obtained by detecting and evaluating the current ageing state of the composite sleeve umbrella skirt, the ageing grade comprises the step of detecting and evaluating the hydrophobicity grade of the surface of the composite sleeve umbrella skirt, the step of detecting and evaluating the pulverization grade of the surface of the composite sleeve umbrella skirt, and the step of detecting and evaluating the cracking grade of the surface of the composite sleeve umbrella skirt. Preferably, the detecting and evaluating the current hydrophobicity level of the surface of the umbrella skirt of the composite sleeve comprises the steps of utilizing an atomization nozzle to spray water mist to the surface of the umbrella skirt of the composite sleeve, acquiring a surface water mist adhesion image of the umbrella skirt of the composite sleeve after spraying water, carrying out image identification processing on the surface water mist adhesion image, evaluating a water mist adhesion state, and outputting the hydrophobicity level according to the water mist adhesion state. Preferably, the spraying of the water mist to the surface of the composite sleeve umbrella skirt by using the atomizing nozzle comprises the steps that the distance between the atomizing nozzle and the surface of the composite sleeve umbrella skirt is 20cm-30cm, the spraying water flow opening angle of the atomizing nozzle is 50-70 degrees, the spraying water quantity is 0.7 mL/time-1 mL/time, the spraying water is sprayed 1 time-3 times per second, and the spraying water is sprayed for 20s-30s. Preferably, the step of acquiring the surface water mist adhesion image of the composite sleeve umbrella skirt after spraying water comprises the step of acquiring the surface water mist adhesion image of the composite sleeve umbrella skirt after spraying water f