A preparation method of a zero-value self-diagnostic slice film of an experimental insulator
By preparing electroluminescent sliced thin films, the problems of low efficiency and misjudgment in the diagnosis of zero-value defects in column insulators have been solved, realizing efficient and reliable self-diagnosis and simplifying the maintenance process, thereby improving the accuracy of insulator testing and resource utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIANNING POWER SUPPLY COMPANY OF STATE GRID HUBEIELECTRIC POWER
- Filing Date
- 2026-03-20
- Publication Date
- 2026-06-12
AI Technical Summary
In the existing technology, post insulators lack effective zero-value defect diagnosis methods, manual inspection is time-consuming and labor-intensive and prone to misjudgment, and electroluminescent coating is inconvenient to apply and is easily affected by the environment.
Electroluminescent sliced films were prepared using polydimethylsiloxane as a substrate and ZnS:Cu phosphor was added. Films with controllable thickness were prepared by a doctor blade method. After curing, the films exhibited toughness and were used for zero-value defect diagnosis of insulators.
It enables self-diagnosis of zero-value defects in insulators, reduces errors, improves maintenance efficiency, simplifies diagnostic steps, increases coating utilization, reduces resource waste, and the film can be reused.
Smart Images
Figure CN122201959A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of zero-value defect diagnosis technology for insulators, and specifically relates to a method for preparing a zero-value self-diagnostic slice film for experimental insulators. Background Technology
[0002] Post-type insulators are one of the important insulating support components of power grids, and a large number of them are in operation. In recent years, the problem of insulator aging has become increasingly prominent, and zero-value defects in insulators have become a major cause of lightning breakdown.
[0003] Currently, the power grid lacks effective means of monitoring post-type insulators, and routine maintenance often relies on manual inspection. Manual inspection is time-consuming and labor-intensive, and it cannot detect whether there are signs of aging in the internal insulation.
[0004] To achieve accurate diagnosis of zero-value defects in insulators, researchers have developed an electroluminescent coating. This coating can reflect the degree of insulation performance degradation of the insulator in real time through changes in brightness. However, previous electroluminescent coatings were applied using spray guns, which had a long setting time and were easily affected by the surrounding environment or dust, leading to misjudgments.
[0005] Therefore, to address this deficiency, this application presents a sliced thin film with electroluminescent properties. This film can be replaced when the electroluminescent coating on the insulator becomes contaminated, without requiring the insulator to be disassembled or cleaned. This film can achieve self-diagnosis of the deterioration of the internal insulation performance of the insulator while improving the maintenance efficiency of the insulator, providing a more efficient solution for maintaining the safety of the power system. Summary of the Invention
[0006] The purpose of this invention is to provide a method for preparing a zero-value self-diagnostic slice film for experimental insulators. This method can control the thickness and uniformity of the electroluminescent film, reduce the errors that may occur when manually spraying electroluminescent coatings directly onto the insulator. After curing, the slice film has a certain toughness and will not be easily destroyed, and can be used for repeated experiments.
[0007] To achieve the above objectives, the technical solution adopted by the present invention is a method for preparing a zero-value self-diagnostic slice film for experimental insulators, characterized by comprising the following steps: 1) Preparation of electroluminescent coating: Polydimethylsiloxane (PDMS, a high molecular weight organosilicon compound) is used as the coating base. ZnS:Cu phosphor is added to PDMS, wherein the mass fraction of ZnS:Cu phosphor is 50%-72% and the mass fraction of PDMS is 28%-50%. The solution is then centrifuged at 250-700 r / min for 5-15 min, stirred evenly, and placed in a vacuum drying oven for degassing to obtain the electroluminescent coating. 2) Cleaning and UV irradiating of glass slides: Take clean glass slides soaked in anhydrous ethanol, irradiate them with ultraviolet light for 19-21 minutes, and then place them on the blade table of the blade coating machine. 3) Preparation of thin film by doctor blade method: After calibrating the position of the doctor blade, use a small spoon to evenly apply the electroluminescent coating onto the glass slide, and start the doctor blade to prepare a glass slide with a thin film (the glass slide 1 has an electroluminescent coating 2). The thickness of the control film (electroluminescent coating 2) is 1-8 mm (the thickness before drying and curing, which is controlled by the position of the scraper; the optimal thickness is 3-5 mm). 4) Curing and cutting off the coating portion: Place the glass slide with the film in a vacuum drying oven and cure it at 115-125℃ for 1-4 hours. Then cut off the coating portion (the cured product) on the glass slide to obtain the zero-value self-diagnostic slice film of the experimental insulator.
[0008] Further, in step 1), the mass fraction of ZnS:Cu phosphor is 60%-62%, and the mass fraction of polydimethylsiloxane (PDMS) is 38%-40%.
[0009] Further, in step 1), the solution is centrifuged at a speed of 450-500 r / min for 8-10 min.
[0010] Furthermore, in step 2), after being irradiated with ultraviolet light for 20 minutes, the substrate is placed on the blade table of the blade coating machine.
[0011] Further, in step 4), the product is cured at 120°C for 2-3 hours.
[0012] This film possesses the normal operating performance of electroluminescent coatings and can effectively diagnose zero-value defects in insulators.
[0013] The beneficial effects of this invention are: 1. This film possesses electroluminescent properties and can be replaced when the electroluminescent coating becomes contaminated, without requiring the insulator to be disassembled or cleaned. This film enables self-diagnosis of internal insulation degradation in insulators while improving maintenance efficiency, providing a more efficient solution for maintaining power system safety.
[0014] 2. Compared with the traditional spraying method, the sliced film of this invention can not only control the thickness and uniformity of the electroluminescent film, reducing the errors that may occur when manually spraying electroluminescent coatings directly onto insulators, but also simplify the diagnostic steps for zero-value defects in insulators and improve the utilization rate of electroluminescent coatings. After curing, this sliced film has a certain toughness and will not be easily damaged. It can be repeatedly tested or used. After one use in the laboratory, it can be retrieved and placed in a clean place, which can effectively reduce the waste of resources and reduce the impact of coating spraying on insulators. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of the glass sheet and the electroluminescent coating of the present invention; in the figure: 1-glass sheet, 2-electroluminescent coating.
[0016] Figure 2 This is a flowchart of the preparation process of the present invention. Detailed Implementation
[0017] Example 1: like Figure 1-2 As shown, a method for preparing a zero-value self-diagnostic slice film for an experimental insulator includes the following steps: 1) Preparation of electroluminescent coating: Using polydimethylsiloxane (PDMS) as the coating base, ZnS:Cu phosphor was added to PDMS, wherein the mass fraction of ZnS:Cu phosphor was 50% and the mass fraction of PDMS was 50%; then the solution was centrifuged at 250 r / min for 15 min, stirred evenly, and placed in a vacuum drying oven for degassing treatment to obtain the electroluminescent coating; 2) Cleaning and UV irradiating of glass slides: Take a clean glass slide soaked in anhydrous ethanol, irradiate it with ultraviolet light for 19 minutes, and then place it on the scraper table of the scraper coating machine. 3) Preparation of thin film by doctor blade method: After calibrating the position of the doctor blade, use a small spoon to evenly apply the electroluminescent coating onto the glass slide, and start the doctor blade to prepare a glass slide with a thin film (the glass slide 1 has an electroluminescent coating 2). The thickness of the film (electroluminescent coating 2) is controlled to be 1 mm (the thickness before drying and curing, which is controlled by the position of the scraper). 4) Curing and cutting off the coating portion: Place the glass slide with the film in a vacuum drying oven and cure it at 115°C for 4 hours. Then cut off the coating portion (the cured product) on the glass slide to obtain the zero-value self-diagnostic slice film of the experimental insulator.
[0018] Application: The zero-value self-diagnostic slice film obtained by the method of this application is attached to the insulator, which can normally diagnose zero-value defects of the insulator. When the zero-value self-diagnostic slice film is contaminated, the zero-value self-diagnostic slice film of the experimental insulator is removed from the insulator and replaced with a new zero-value self-diagnostic slice film of the experimental insulator.
[0019] This film possesses the normal operating properties of an electroluminescent coating (this film exhibits electroluminescence properties) and can effectively diagnose zero-value defects in insulators. It can be replaced when the electroluminescent coating becomes contaminated without requiring disassembly or cleaning of the insulator. This sliced film, after curing, possesses a certain degree of toughness, is not easily damaged, and can be used repeatedly in experiments.
[0020] Example 2: like Figure 1-2 As shown, a method for preparing a zero-value self-diagnostic slice film for an experimental insulator includes the following steps: 1) Preparation of electroluminescent coating: Using polydimethylsiloxane (PDMS) as the coating base, ZnS:Cu phosphor was added to PDMS, wherein the mass fraction of ZnS:Cu phosphor was 60% and the mass fraction of PDMS was 40%; then the solution was centrifuged at 450 r / min for 10 min, stirred evenly, and placed in a vacuum drying oven for degassing treatment to obtain the electroluminescent coating; 2) Cleaning and UV irradiating of glass slides: Take a clean glass slide that has been soaked in anhydrous ethanol, irradiate it with ultraviolet light for 20 minutes, and then place it on the scraper table of the scraper coating machine. 3) Preparation of thin film by doctor blade method: After calibrating the position of the doctor blade, use a small spoon to evenly apply the electroluminescent coating onto the glass slide, and start the doctor blade to prepare a glass slide with a thin film (the glass slide 1 has an electroluminescent coating 2). The thickness of the film (electroluminescent coating 2) is controlled to be 3 mm (the thickness before drying and curing, which is controlled by the position of the scraper). 4) Curing and cutting off the coating portion: Place the glass slide with the film in a vacuum drying oven and cure it at 120°C for 2 hours. Then cut off the coating portion (the cured product) on the glass slide to obtain the zero-value self-diagnostic slice film of the experimental insulator.
[0021] Application: The zero-value self-diagnostic slice film obtained by the method of this application is attached to the insulator, which can normally diagnose zero-value defects of the insulator. When the zero-value self-diagnostic slice film is contaminated, the zero-value self-diagnostic slice film of the experimental insulator is removed from the insulator and replaced with a new zero-value self-diagnostic slice film of the experimental insulator.
[0022] This film possesses the normal operating properties of an electroluminescent coating (this film exhibits electroluminescence properties) and can effectively diagnose zero-value defects in insulators. It can be replaced when the electroluminescent coating becomes contaminated without requiring disassembly or cleaning of the insulator. This sliced film, after curing, possesses a certain degree of toughness, is not easily damaged, and can be used repeatedly in experiments.
[0023] Example 3: like Figure 1-2 As shown, a method for preparing a zero-value self-diagnostic slice film for an experimental insulator includes the following steps: 1) Preparation of electroluminescent coating: Using polydimethylsiloxane (PDMS) as the coating base, ZnS:Cu phosphor was added to PDMS, wherein the mass fraction of ZnS:Cu phosphor was 62% and the mass fraction of PDMS was 38%; then the solution was centrifuged at 500 r / min for 8 min, stirred evenly, and placed in a vacuum drying oven for degassing treatment to obtain the electroluminescent coating; 2) Cleaning and UV irradiating of glass slides: Take a clean glass slide that has been soaked in anhydrous ethanol, irradiate it with ultraviolet light for 20 minutes, and then place it on the scraper table of the scraper coating machine. 3) Preparation of thin film by doctor blade method: After calibrating the position of the doctor blade, use a small spoon to evenly apply the electroluminescent coating onto the glass slide, and start the doctor blade to prepare a glass slide with a thin film (the glass slide 1 has an electroluminescent coating 2). The thickness of the film (electroluminescent coating 2) is controlled to be 5 mm (the thickness before drying and curing, which is controlled by the position of the scraper). 4) Curing and cutting off the coating portion: Place the glass slide with the film in a vacuum drying oven and cure it at 120°C for 3 hours. Then cut off the coating portion (the cured product) on the glass slide to obtain the zero-value self-diagnostic slice film of the experimental insulator.
[0024] Application: The zero-value self-diagnostic slice film obtained by the method of this application is attached to the insulator, which can normally diagnose zero-value defects of the insulator. When the zero-value self-diagnostic slice film is contaminated, the zero-value self-diagnostic slice film of the experimental insulator is removed from the insulator and replaced with a new zero-value self-diagnostic slice film of the experimental insulator.
[0025] This film possesses the normal operating properties of an electroluminescent coating (this film exhibits electroluminescence properties) and can effectively diagnose zero-value defects in insulators. It can be replaced when the electroluminescent coating becomes contaminated without requiring disassembly or cleaning of the insulator. This sliced film, after curing, possesses a certain degree of toughness, is not easily damaged, and can be used repeatedly in experiments.
[0026] Example 4: like Figure 1-2 As shown, a method for preparing a zero-value self-diagnostic slice film for an experimental insulator includes the following steps: 1) Preparation of electroluminescent coating: Using polydimethylsiloxane (PDMS) as the coating base, ZnS:Cu phosphor was added to PDMS, wherein the mass fraction of ZnS:Cu phosphor was 72% and the mass fraction of PDMS was 28%; then the solution was centrifuged at 700 r / min for 5 min, stirred evenly, and placed in a vacuum drying oven for degassing treatment to obtain the electroluminescent coating; 2) Cleaning and UV irradiating of glass slides: Take a clean glass slide that has been soaked in anhydrous ethanol, irradiate it with ultraviolet light for 21 minutes, and then place it on the scraper table of the scraper coating machine. 3) Preparation of thin film by doctor blade method: After calibrating the position of the doctor blade, use a small spoon to evenly apply the electroluminescent coating onto the glass slide, and start the doctor blade to prepare a glass slide with a thin film (the glass slide 1 has an electroluminescent coating 2). The thickness of the film (electroluminescent coating 2) is controlled to be 8 mm (the thickness before drying and curing, which is controlled by the position of the scraper). 4) Curing and cutting off the coating portion: Place the glass slide with the film in a vacuum drying oven and cure it at 125°C for 1 hour. Then cut off the coating portion (the cured product) on the glass slide to obtain the zero-value self-diagnostic slice film of the experimental insulator.
[0027] Application: The zero-value self-diagnostic slice film obtained by the method of this application is attached to the insulator, which can normally diagnose zero-value defects of the insulator. When the zero-value self-diagnostic slice film is contaminated, the zero-value self-diagnostic slice film of the experimental insulator is removed from the insulator and replaced with a new zero-value self-diagnostic slice film of the experimental insulator.
[0028] This film possesses the normal operating properties of an electroluminescent coating (this film exhibits electroluminescence properties) and can effectively diagnose zero-value defects in insulators. It can be replaced when the electroluminescent coating becomes contaminated without requiring disassembly or cleaning of the insulator. This sliced film, after curing, possesses a certain degree of toughness, is not easily damaged, and can be used repeatedly in experiments.
Claims
1. A method for preparing a zero-value self-diagnostic slice film for experimental insulators, characterized in that... Includes the following steps: 1) Preparation of electroluminescent coating: Using polydimethylsiloxane as the coating base, ZnS:Cu phosphor is added to polydimethylsiloxane, wherein the mass fraction of ZnS:Cu phosphor is 50%-72% and the mass fraction of polydimethylsiloxane is 28%-50%; then the solution is centrifuged at 250-700 r / min for 5-15 min, stirred evenly, and placed in a vacuum drying oven for degassing treatment to obtain electroluminescent coating; 2) Cleaning and UV irradiating of glass slides: Take clean glass slides soaked in anhydrous ethanol, irradiate them with ultraviolet light for 19-21 minutes, and then place them on the blade table of the blade coating machine. 3) Preparation of thin films by doctor blade method: After calibrating the position of the doctor blade, use a small spoon to evenly apply the electroluminescent coating onto the glass slide, and start the doctor blade to prepare a glass slide with a thin film. 4) Curing and cutting off the coating portion: Place the glass slide with the film in a vacuum drying oven and cure it at 115-125℃ for 1-4 hours. Then cut off the coating portion on the glass slide to obtain the zero-value self-diagnostic slice film of the experimental insulator.
2. The method for preparing a zero-value self-diagnostic slice film for an experimental insulator according to claim 1, characterized in that... In step 1), the mass fraction of ZnS:Cu phosphor is 60%-62%, and the mass fraction of polydimethylsiloxane is 38%-40%.
3. The method for preparing a zero-value self-diagnostic slice film for an experimental insulator according to claim 1, characterized in that... In step 1), centrifuge the solution at a speed of 450-500 r / min for 8-10 min.
4. The method for preparing a zero-value self-diagnostic slice film for an experimental insulator according to claim 1, characterized in that... In step 2), after being irradiated with ultraviolet light for 20 minutes, the substrate is placed on the blade table of the blade coating machine.
5. The method for preparing a zero-value self-diagnostic slice film for an experimental insulator according to claim 1, characterized in that... In step 3), the thickness of the film is controlled to be 1-8 mm.
6. The method for preparing a zero-value self-diagnostic slice film for an experimental insulator according to claim 1, characterized in that... In step 4), cure at 120°C for 2-3 hours.