Ferromagnetic material defect detection system based on ultrasonic and magnetic flux leakage

Abstract

The invention discloses a ferromagnetic material defect detection system based on ultrasonic and magnetic flux leakage. The system is composed of a sensor, a host computer, a computer, a data uploading line, a motor, wheels, a support plate, a frame, a through hole, coils, a U-shaped magnetic core, driving wheels, an N-pole electromagnetic ultrasonic coil, an S-pole electromagnetic ultrasonic coil, a Hall element, an electronic potting sealant, sensor holders, a power amplifier, a sinusoidal signal generator, a 220v / 5v power source, a heat blowing fan, a signal acquisition card, a power adjustment knob, and a 220v / 15v transformer coil. According to the detection system, magnetic flux leakage is adopted to perform detection; a part where an alarm is generated is marked; after the initial condition of a ferromagnetic pressure-bearing device is understood, an ultrasonic detection technology, that is, the electromagnetic ultrasonic coils, are used to accurately judge an alarm part; the safety status of the ferromagnetic pressure-bearing device can be judged; and the blindness of ultrasonic thickness measurement-based defect detection can be avoided. The system has a high practical value and bright application prospect.

Description

technical field [0001] The invention belongs to the technical field of non-destructive detection of defects of ferromagnetic pressure-bearing equipment, and in particular relates to a detection system for magnetic material defects combined with ultrasound and leakage magnets. Background technique [0002] As the core equipment of boilers and pressure pipes, pressure-bearing equipment has the characteristics of high temperature, high pressure, and cryogenic medium. These devices are very likely to cause accidents due to equipment overload, overdue service, and insufficient regular maintenance. Once a leakage or explosion accident occurs, the consequences will be extremely serious. Therefore, it is of great significance to develop effective non-destructive testing technology for ferromagnetic pressure equipment for rapid detection and early diagnosis of pressure equipment. At present, the commonly used non-destructive testing techniques include ultrasonic testing and magnetic...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the sensors used for magnetic flux leakage and ultrasonic detection are all independent sensors. If the above detection goals are to be achieved, multiple instruments and sensors such as magnetic flux leakage and ultrasonic are often required to be used together or in combination to perform detection.

Using the existing scheme of using multiple independent sensors to detect the measured object increases the complexity and cost of the detection system, and the detection efficiency is not high

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