Pipeline corrosion monitoring device based on array type piezoelectric film sensor

Abstract

The invention provides a pipeline corrosion monitoring device based on an array type piezoelectric film sensor. The thickness of the pipeline curved surface area range is tested. The device comprises an ultrasonic wave signal excitation module, an array type piezoelectric film sensor module, a signal collection and processing module and a signal analysis module. The ultrasonic wave signal excitation module is responsible for controlling a pulse signal generating device to generate periodic narrow pulses. The array type piezoelectric film sensor module is excited to generate ultrasonic waves, the ultrasonic waves are repeatedly reflected back and forth on the upper surface and the lower surface of a tested part, and reflected waves produced by reflection are received by an array type piezoelectric film sensor probe to form electric signals. The signal collection and processing module is responsible for carrying out amplifying, filtering and multi-channel scanning processing on the electric signals and sending the processed electric signals to the signal analysis module. The signal analysis module is responsible for counting the propagation time of the ultrasonic waves on the upper surface and the lower surface, waveform data analysis software is adopted for figuring out the thickness of the tested part, the measurement thickness change situation is output, and therefore the corrosion situation is detected.

Description

technical field [0001] The invention relates to nondestructive testing technology, belongs to the field of structural health testing, and in particular relates to a pipeline corrosion monitoring device based on an array piezoelectric film (PVDF) sensor. Background technique [0002] Today, the sustainability and rapidity of my country's economic development has become more and more urgent for the energy demand with oil and gas resources as the main body. In view of many advantages, pipelines have become one of the main means of transportation of oil and gas resources, so it is very important to prevent accidents such as pipeline leakage. Ultrasonic testing is a conventional non-destructive testing technology. It is easy to carry, easy to measure, has high precision, and has small errors. It can accurately detect the wall thickness of pipes without damaging equipment and parts. In the detection of curved surfaces such as boilers and pipes, conventional ultrasonic piezoelectr...

AI Technical Summary

Problems solved by technology

The single-point detection operation is complex and cumbersome, and the data records are chaotic, which is not conducive to the long-term monitoring of the corrosion of the pressure pipeline

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