Low-power consumption intelligent three-dimensional magnetic leakage detecting probe

Abstract

The invention provides a low-power consumption intelligent three-dimensional magnetic leakage detecting probe, which is applied to magnetic leakage detecting equipment for defects such as the corrosion, the cracks and the like of a long-distance transmission pipeline, can realize high-precision multi-sensor detection (1,500 to 4,000 sensors) and low power consumption (one thirtieth to one two hundredths of the conventional equipment), and solves the key problem of the battery capacity of a magnetic leakage detector. The probe consists of a Hall sensor array, a time-sharing power supply module, a signal processing module and an intelligent controller, wherein the Hall sensor array is used for measuring magnetic leakage intensity in an X direction, a Y direction and a Z direction; the time-sharing power supply module is used for only supplying power to sampling sensors in a time-sharing mode so as to realize the low power consumption; the signal processing module is used for signal filtering, analogue / digital conversion and the like; the intelligent controller is a complex programmable logic device (CPLD), realizes time-sharing power supply control, data acquisition, data transmission and communication, and has high interference resisting capability.

Description

technical field [0001] The invention relates to a three-dimensional probe of magnetic flux leakage detection equipment for defects such as corrosion and cracks in long-distance oil and gas pipelines, which is used for detecting the shape and depth of defects. Background technique [0002] Due to reasons such as corrosion, fatigue cracks and accidental damage, the leakage of long-distance oil and gas pipelines occurs from time to time, which not only causes huge economic losses, but also causes serious pollution to the environment. In the process of pipeline operation and maintenance, efficient and reliable detection technology is of great significance for the assessment and prediction of accident hazards, maintenance and pipeline safety. [0003] The basic principle of magnetic flux leakage detection is to use an external magnetic field to magnetize the pipeline material. When the material is defective, the magnetic permeability will change, resulting in the bending and dist...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of low resolution and high power consumption of existing pipeline magnetic flux leakage detector probes, and provide a high-precision multi-sensor (1500-4000) detection, low power consumption (traditional equipment) 1 / 30~1 / 200) intelligent three-dimensional magnetic flux leakage detection probe

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