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Orthogonal eddy current testing device

A detection device and eddy current technology, applied in the field of eddy current detection, can solve problems such as missed detection

Pending Publication Date: 2019-07-05
NANJING VOCATIONAL UNIV OF IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem of missed detection in the prior art, and proposes an orthogonal eddy current detection device, which forms a rotating eddy current on the surface and sub-surface of the rail, and realizes detection through the rotating eddy current

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  • Orthogonal eddy current testing device
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Embodiment Construction

[0025] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0026] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of numerous ways, since the concepts and embodiments disclosed herein are not limited to any implementation. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[0027] to combine Figure 1-Figure 4 As shown, an orthogonal eddy current detection device of the present invention include...

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Abstract

The invention provides an orthogonal eddy current detection device, which comprises a shell, iron cores and an electromagnetic sensor array, wherein the iron cores and the electromagnetic sensor arrayare orthogonally distributed and arranged in the shell; the orthogonally distributed iron cores comprise two identical U-shaped iron cores which are orthogonally fixed in the shell respectively; theslot parts of the first iron core and the second iron core are positioned at mutually superposed positions and are wound with coils as eddy current generating devices, and the coils respectively formindependent circuits through coil wires, are led out of the shell and are connected with an excitation circuit; the electromagnetic sensor array is formed by a plurality of magnetic sensors arranged into M*N combination and is used for receiving the feedback signal of eddy current detection; and the orthogonal eddy current detection device can form rotating eddy currents on the surface and the subsurface of the rail, and can realize comprehensive detection through the rotating eddy currents.

Description

technical field [0001] The invention relates to the technical field of eddy current detection, in particular to the eddy current detection of rail damage, and in particular to an orthogonal eddy current detection device. Background technique [0002] At present, there are four main methods of rail detection, each with advantages and disadvantages. Manual identification: slow detection speed, poor accuracy, and extremely high requirements for the work quality of inspectors; ultrasonic flaw detection: suitable for internal inspection of railroad tracks, and is easily affected by environmental factors; CCD line scan camera: fast detection accuracy, suitable for railroad tracks Surface inspection is easily affected by impurities on the rail surface; traditional eddy current inspection: suitable for rail surface and subsurface inspection, can accurately determine the location of defects, but still fails to achieve quantitative evaluation of the shape, size, and damage degree of r...

Claims

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Application Information

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IPC IPC(8): G01N27/90
CPCG01N27/9006
Inventor 宋增禄杨战民
Owner NANJING VOCATIONAL UNIV OF IND TECH