Pipeline stress nondestructive testing method and system based on ultrasound

Abstract

The invention discloses an ultrasonic-based pipeline stress nondestructive testing method, which comprises the following steps that: a pipeline to be tested is prepared, the pipeline is put on a detection table, anda transmitting probe and a receiving probe of ultrasonic detection equipment are arranged at corresponding positions of the pipeline; during testing, the detection equipment emits ultrasonic waves through the transmitting probe, and the ultrasonic waves penetrate through the pipeline and are received through the receiving probe; the ultrasonic receiving probe performs signal amplification processing on the received sound wave after receiving the ultrasonic wave, the amplified signal is transmitted to a data acquisition module, and the data acquisition module is arranged in the detection equipment; and the detection equipment analyzes the collected signals. The pipeline stress is detected through ultrasonic waves in the ultrasonic detection equipment, the pipeline stress detection efficiency is improved, meanwhile, the detection equipment is small in size and convenient to carry, the pipeline stress can be detected anytime and anywhere, and the limitation of traditional pipeline stress detection is solved.

Description

technical field [0001] The invention relates to the technical field of pipeline stress testing, in particular to an ultrasonic-based nondestructive testing method and system for pipeline stress. Background technique [0002] During the use of pipelines, geometric deformation often occurs due to ground subsidence and other reasons, resulting in stress concentration. Microscopically, the atoms in the stress concentration area on the pipeline are prone to slip movement, which may lead to an increase in the geometric deformation of the pipeline. , decreased strain resistance and accelerated corrosion, may eventually develop into macroscopic defects in the pipeline, that is, cause the overall damage of the stress concentration area on the pipeline. Therefore, in order to avoid the occurrence of the above situation, it is necessary to carry out stress detection on the pipeline in time. The existing pipeline stress detection efficiency is low and the detection must be sent to a pro...

AI Technical Summary

Problems solved by technology

[0002] During the use of pipelines, geometric deformation often occurs due to ground subsidence and other reasons, resulting in stress concentration. Microscopically, the atoms in the stress concentration area on the pipeline are prone to slip movement, which may lead to an increase in the geometric deformation of the pipeline. , reduced strain resistance and accelerated corrosion, may eventually develop into macroscopic defects in the pipeline, that is, cause the overall failure of the stress concentration area on the pipeline

Therefore, in order to avoid the occurrence of the above situation, it is necessary to carry out stress detection on the pipeline in time. The existing pipeline stress detection efficiency is low and must be sent to a professional testing organization during the detection.

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