Array eddy current probe and detection method for wire rope broken wire defect detection

Abstract

The invention discloses an array eddy current probe for detection of the wire breaking defect of a steel wire rope and a detection method. The probe comprises an excitation probe device and a detection probe device, wherein the excitation probe device comprises two semicircular resin frameworks nested on the outer part of the steel wire rope, excitation coils winding around the semicircular resinframeworks as well as bolts for fixation; the detection probe device comprises a plurality of cuboid resin frameworks in a circular array and detection coils winding around the cuboid resin frameworks; the steel wire rope is placed in an alternating magnetic field produced by the excitation coils, the surface and the near surface of the steel wire rope can induce axially distributed eddy current,and the plurality of cuboid resin frameworks in a circular array can detect the position of the wire breaking defect in the steel wire rope. The array probe detects the wire breaking defect of the steel wire rope in a non-contact manner; compared with conventional flux leakage detection probes, the probe has higher detection efficiency, can detect the steel wire rope online and is convenient to assemble and disassemble, and steel wire rope equipment is not required to be disassembled.

Description

technical field [0001] The invention relates to an electromagnetic non-destructive testing probe, in particular to an array eddy current probe and a testing method for detecting broken wire defects of steel wire ropes. Background technique [0002] As an important component widely used in lifting equipment, steel wire rope has the advantages of light weight, high tensile strength, strong bearing capacity, and good flexibility, so it is widely used in many fields. Due to the serious instability of its service environment, the steel wire rope will have defects such as broken wires, wear and corrosion that damage its own performance during service, which may cause serious safety accidents. Therefore, in order to reduce the occurrence of safety accidents and protect people's lives and property Safety, it is very important to use appropriate non-destructive testing methods for safety testing and evaluation of steel wire ropes. [0003] At present, the non-destructive testing met...

AI Technical Summary

Problems solved by technology

The magnetic flux leakage detection method has the advantages of simple operation, intuitive display results, and high detection sensitivity. However, there are also problems such as low detection efficiency and lack of verification by other methods.

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