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Graded direct-reading method and device for surface hydrophobicity of composite insulating material

A technology of composite insulation and insulating materials, which is applied in the direction of testing composite materials, material analysis by optical means, measuring devices, etc. Effect

Inactive Publication Date: 2018-11-02
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is simple and quick to operate, and it is easy to quickly judge the hydrophobic performance. However, due to the existence of device errors and subjective judgments, certain errors will inevitably occur when analyzing the hydrophobic grade.

Method used

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  • Graded direct-reading method and device for surface hydrophobicity of composite insulating material
  • Graded direct-reading method and device for surface hydrophobicity of composite insulating material
  • Graded direct-reading method and device for surface hydrophobicity of composite insulating material

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Embodiment 1

[0042] like figure 1 As shown, embodiment 1 provides a kind of composite insulation material surface hydrophobicity graded direct reading method and device, described method comprises the following steps:

[0043] S1, adjust the distance between the nozzle and the surface of the insulating material, so that the distance between the nozzle and the surface of the insulating material is a standard distance. In this process, when adjusting the distance between the nozzle and the surface of the insulating material, the principle of laser ranging can be used to automatically adjust the distance between the nozzle and the surface of the insulating material through the control chip and the motor. The final standard distance is 25cm.

[0044] S2, spray a certain amount of deionized water on the surface of the insulating material through the nozzle at a certain speed and angle. Among them, the amount of water sprayed by the nozzle is 5ml, the spray rate is 0.5ml / s, and the spray angle ...

Embodiment 2

[0057] like image 3 As shown, embodiment 2 provides a kind of composite insulation material surface hydrophobicity classification direct reading method and device, described method comprises the following steps:

[0058] S0, establishing a standard database of hydrophobic grades, wherein the standard image corresponding to each hydrophobic grade is stored in the standard database of hydrophobic grades.

[0059] The specific implementation process of step S0 is as follows: obtain the composite insulating material whose hydrophobicity level has been determined; spray water on the surface of the composite insulating material and take a picture; digitize the number of water drops and the coverage area in the photographed image to obtain a standard image ; Repeat the above steps until the standard image corresponding to each hydrophobicity grade is obtained.

[0060] S1, adjust the distance between the nozzle and the surface of the insulating material, so that the distance betwee...

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Abstract

The invention provides a graded direct-reading method and device for the surface hydrophobicity of a composite insulating material. The method comprises the following steps: adjusting the distance from a spray head to the surface of an insulating material to be a standard distance; spraying quantified deionized water to the surface of the insulating material in a certain speed and angle; photographing a part of the material in the water spraying range; carrying out digital processing on a photographed image, so as to obtain a digital image including the number of water drops and the coverage area, and making comparison on the acquired digital image and a standard image of each hydrophobic grade; and displaying the grading result according to a comparison result. The device comprises a laser spacing device, a pressurizing injection unit, an image photographing unit, an image processing unit, an image analysis unit and a hydrophobic grade display unit. According to the method and the device, by quantitatively controlling the water yield, water jetting angle and water jetting height, the graded and accurate measurement of the surface hydrophobicity of the insulating material is realized.

Description

technical field [0001] The invention belongs to the field of hydrophobicity detection of insulating materials, and in particular relates to a direct-reading method and device for classifying and direct-reading the surface hydrophobicity of composite insulating materials. Background technique [0002] Organic external insulation materials prevent pollution flashover accidents mainly by utilizing their hydrophobic properties. If their hydrophobic properties fail, it indicates that the life of this material is about to end. However, when the surface of the organic external insulating material is seriously polluted, it will lead to a decrease in its hydrophobic performance and may cause a flashover accident. Under normal circumstances, due to the influence of environmental factors such as temperature, ultraviolet rays, and electromagnetic fields, organic external insulating materials will inevitably age, and aging phenomena such as peeling, cracking, powdering, and falling off w...

Claims

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Application Information

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IPC IPC(8): G01N21/84
CPCG01N21/84G01N2021/8472
Inventor 刘辉刘传彬漆照黄振宁姚金霞孙晓斌刘嵘贾然张洋周超段玉兵张皓马国庆张思远赵金辉姚朋飞李珊裴秀高
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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