Automatic detection method for quality of eddy current detection signal of heat-exchanger tube

Abstract

The invention belongs to the field of automatic detection and specifically relates to an automatic detection method for quality of an eddy current detection signal of a heat-exchanger tube. According to the automatic detection method, the unqualified data in a collecting process can be detected in time; an automatic process can be corrected in time; when data quality is unqualified, the automatic process can be stopped in time; and the detection is integrated into a collecting system and no additional detection time is consumed. The automatic detection method comprises the following steps: S1) detecting the basic characteristics of an eddy current defect signal; S2) detecting the response characteristic of an eddy current defect frequency; and S3) detecting the validity of the collecting scope of the eddy current signal.

Description

technical field [0001] The technology belongs to the field of automatic detection, and specifically relates to a method for automatic detection of signal quality of heat exchange tube eddy current detection. Background technique [0002] The eddy current inspection of evaporator heat transfer tube plays an important role in the in-service inspection of nuclear power equipment due to its high inspection frequency, heavy workload and high technical content. [0003] The development of eddy current testing software in foreign countries has matured, and most of the powerful foreign non-destructive testing companies in the field of nuclear power have developed eddy current testing systems. With the rapid development of technology, the eddy current testing system tends to be more rapid and intelligent. The main method is through automatic collection and analysis of eddy current signals, and building the whole system into a unified intelligent management platform, finally realizin...

AI Technical Summary

Problems solved by technology

At present, only a few testing companies in foreign countries have developed human-computer interaction eddy current signal quality analysis modules for the identification of signal quality. Since there are many factors that affect the quality of eddy current signal data, each factor will produce interference signals with different characteristics. These interferences may Resulting in unqualified eddy current detection signal

At the same time, the manual interactive detection method is used, and the analysis results are affected by human subjective factors. The current situation is that there is no efficient and fast eddy current signal data quality automatic verification method in the heat exchange tube eddy current detection at home and abroad.

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