Method for performing nondestructive testing on power transmission line clamp by applying flexible memory phosphorescent plate

Abstract

The invention discloses a method for carrying out nondestructive detection on a power transmission line clamp by applying a flexible memory phosphorescent plate, which comprises the following steps that the flexible memory phosphorescent plate is placed behind the power transmission line clamp, laser rays are emitted by a laser generator, the radiation of the laser rays is received by the flexiblememory phosphorescent plate, and the energy of the incident radiation of the laser rays are stored; the scanner scans the flexible memory phosphor plate to obtain a scanned image; the scanning imagesare transmitted to the computer device, the computer device analyzes the structural defects of the power transmission line clamp according to the scanning images, wireless transmission in a complex electromagnetic environment with high voltage is avoided, collision can be borne, and the flexible memory phosphorescent plate is easier to carry and operate compared with a digital flat panel detector. Due to the fact that the flexible memory phosphorescent plate is easier to carry and operate, laser ray flaw detection is achieved more conveniently and efficiently, the power supply reliability inthe flaw detection process is improved, and the cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of flaw detection, in particular to a method for non-destructive testing of transmission line clips using a flexible memory phosphor plate. Background technique [0002] In the prior art, a digital flat-panel detector is usually used for flaw detection of overhead cables. Specifically, an X-ray machine detects the image signal of the internal structure of the cable, and then wirelessly transmits it to the digital flat-panel detector. The digital flat-panel The detector then wirelessly transmits the image information to the control platform for image processing and imaging display. [0003] However, the method of using the above-mentioned digital flat-panel detector for flaw detection has the following defects: first, when working in the complex and strong electromagnetic field environment of the high-voltage electric tower, the signal wireless transmission method is greatly interfered by the strong electroma...

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Problems solved by technology

[0003] However, the method of using the above-mentioned digital flat-panel detector for flaw detection has the following defects: first, when working in the complex and strong electromagnetic field environment of the high-voltage electric tower, the signal wireless transmission method is greatly interfered by the strong electromagnetic field, resulting in the final imaging display The success rate is extremely low; when using UAV power UAV inspection, the higher the voltage level of the power line, the greater the electromagnetic interference received by the UAV operating near it, and the easier it is for geomagnetic signals, Remote control, image transmission signal loss, etc.

However, problems such as loss of image transmission signals due to electromagnetic field shielding still need to be resolved

Second, the use of digital flat-panel detectors requires high-voltage tower power outage operations, which will bring huge economic losses to power supply companies; because the operation of digital flat-panel detectors is based on X-ray stimulation of photodiodes using a 127μm grid pixel array Thin film transistor (thin film transistor, TFT) imaging, so it is impossible to use a Faraday cage to protect the internal structure of the digital flat panel detector

During the equipotential process of live work, the arc discharge will destroy the photodiode and the grid pixel array

Third, the digital flat-panel detector is a precision electronic device, including routers, batteries and other equipment. When working in the field, in the open air, or in a complex and strong electromagnetic field environment, the internal electronic devices of the device are extremely susceptible to interference from strong electromagnetic fields, and the failure rate of the device is extremely high. high

Fourth, after the digital flat panel detector is damaged, the repair cost is extremely high and the repair time is long

If the square pixel array TFT is damaged, the digital flat panel detector is basically scrapped and cannot be used any more

Fifth, the weight of the digital flat panel detector is about 15 kilograms together with the battery and wireless transmission. It is very inconvenient for electric workers to carry the electric tower higher than 100 meters

Sixth, the digital flat-panel detector requires the X-ray machine to continuously emit multiple pulse signals, and the multiple pulse signals will cause great radiation to the operators.

At the same time, it will shorten the service life of expensive X-ray machines

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