A non-destructive testing device and method for composite insulators based on Lambert-Beer's law

A composite insulator, non-destructive testing technology, applied in the measurement of color/spectral characteristics, etc., can solve the problems of non-recovery of composite insulators, operation and damage of composite insulator structure transmission lines

Active Publication Date: 2021-08-20
STATE GRID SHAANXI ELECTRIC POWER RES INST +2
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  • Claims
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AI Technical Summary

Problems solved by technology

This method will cause irreversible damage to the composite insulator, and the structure of the composite insulator after the test is destroyed and cannot be re-run on the transmission line.

Method used

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  • A non-destructive testing device and method for composite insulators based on Lambert-Beer's law
  • A non-destructive testing device and method for composite insulators based on Lambert-Beer's law

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Embodiment approach

[0028] see figure 1 As shown, the present invention provides a non-destructive testing device for composite insulators based on Lambert-Beer's law, comprising a deuterium lamp 1, a diaphragm 2, a moving mirror 3, a beam splitter 4, an interferometer 5, a sample 6, Photomultiplier tube 7 and signal processing circuit 8.

[0029] The deuterium lamp 1 is used to generate ultraviolet light beams; on the irradiation path of the ultraviolet light beams, an aperture 2, a spectroscopic groove 4, an interferometer 5, a sample 6 and a photomultiplier tube 7 are arranged in sequence.

[0030] Diaphragm 2 is used to limit the ultraviolet beam emitted by deuterium lamp 1, and constrains the continuous ultraviolet spectrum emitted by deuterium lamp 1 to a beam with a radius of 20 μm; two diaphragms are set to form two ultraviolet beams, so that Subsequent formation of interference light;

[0031] Moving mirror 3, including multiple, is used to reflect ultraviolet light to reach the requir...

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Abstract

The invention discloses a composite insulator non-destructive testing device and method based on Lambert-Beer's law, comprising: a deuterium lamp, an aperture, a beam splitter, an interferometer, a sample and a photomultiplier tube; a deuterium lamp for generating ultraviolet beams; an ultraviolet On the irradiation path of the light beam, an aperture, a spectroscopic groove, an interferometer, a sample and a photomultiplier tube are arranged in sequence. The present invention is based on Lambert-Beer's law, utilizes Si-O-Si and Si-CH in the composite insulator material 3 After the group absorbs ultraviolet light, the electronic energy level transition in the group produces different absorption spectra, and the aging degree of the composite insulator can be judged according to the absorption spectrum. The invention solves the problem that the structure of the insulator needs to be destroyed in the related test at present, realizes the non-destructive testing of the composite insulator, and proposes a new testing method, which has great practical application value.

Description

technical field [0001] The invention belongs to the technical field of insulator detection, and in particular relates to a nondestructive detection device and a detection method of a composite insulator. Background technique [0002] With the development of UHV and other power transmission projects in my country, a large number of composite insulators need to be connected to the grid for operation in high-altitude environments. In high-altitude areas, the intensity of ultraviolet radiation is high, and the total radiation is much higher than other areas. As the main raw material of composite insulators, high-temperature vulcanized silicone rubber is an organic polymer material, which will accelerate aging in the face of strong ultraviolet radiation. After aging, it will cause the decline of mechanical and electrical properties of composite insulators, and even cause flashover and string drop. Such major accidents seriously threaten the safe and stable operation of the power ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/33
CPCG01N21/33
Inventor 申巍张鹏王森尚宇高峰王辰曦李志忠王南
Owner STATE GRID SHAANXI ELECTRIC POWER RES INST
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