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Magic wand type array eddy current probe and sensor and detection method thereof

A technology of eddy current detection and eddy current probes, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of inability to copy general detection probes, not too high, promotion restrictions, etc., and achieve simplification of hardware operation structure and procedures, and flexibility The effect of selective detection

Pending Publication Date: 2022-07-29
EDDYSUN (XIAMEN) ELECTRONICS CO LTD +1
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Problems solved by technology

However, this single-probe eddy current method is not too high in terms of detection efficiency
Right as attached figure 1 The main part of the detected object 11 shown has multiple irregular surfaces. If the array orthogonal non-directional probe needs to be used to improve work efficiency, a special array probe must be customized; in fact, this irregular shape structure pattern There are many kinds of general-purpose detection probes that cannot be copied, which limits the promotion of this technology

Method used

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  • Magic wand type array eddy current probe and sensor and detection method thereof
  • Magic wand type array eddy current probe and sensor and detection method thereof
  • Magic wand type array eddy current probe and sensor and detection method thereof

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Embodiment Construction

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like figure 1 and figure 2 As shown, an eddy current detection sensor is used for the eddy current detection sensor 121 of the detected object 11 of a large metal device, and includes a coil 1211 and a main body 1212. The intersection is wound around a cube, wherein, during detection, the six surfaces of the sensor cube-shaped main body form the same non-directional eddy current detection surface that intersects in pairs. That is, the same non-directional detection sensors are formed on the six surfaces of the detection sensor cube.

[0031] like figure 2As shown in the figure, three sets of identical coils are alternately used as transmitting and receiving coils in a time interval, and the best detection signal is selected as the required detection result. In each time period, the six faces of the detection sensor cube take turns to...

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Abstract

The invention discloses a magic wand type array eddy current probe and a sensor and a detection method thereof, the sensor 121 used for eddy current detection of cracks of a detected object 11 of a large metal device comprises coils 1211 and a main body 1212, the main body 1212 is arranged to be of a cube structure, three groups of identical coils are respectively and uniformly wound on the cube in a pairwise orthogonal manner, during detection, the six surfaces of the cube-shaped main body of the sensor form identical non-directional eddy current detection surfaces which are intersected pairwise. According to the detection probe formed by a plurality of non-directional cube eddy current detection sensor arrays, a connecting structure capable of relatively rotating and relatively translating is formed among the sensors, an array eddy current probe structure similar to a magic wand is realized, and the detection accuracy is improved by utilizing the characteristic that the square orthogonal coils have detection capability in a plurality of directions. A magic-stick-shaped (or snake-shaped) array is formed, and the deformable orthogonal non-directional eddy current sensor solves the problem of detection of irregular special-shaped metal workpieces in on-service large-scale equipment on site.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing, in particular to an array type eddy current sensor, in particular to a magic wand type array eddy current probe, a sensor and a detection method thereof. Background technique [0002] In the major equipment in service, there are various metal parts with special-shaped structures, including some structures with welded seams, which are prone to fatigue cracks because they must bear certain forces (including shearing, cutting, bending, torsion, etc.) during their work. Usually, people mostly use ultrasonic, magnetic particle, and eddy current methods for non-destructive testing. Since ultrasonic requires couplant, it is inconvenient to use. Magnetic particle testing has environmental pollution, and it is not easy to implement in some irregular surfaces. Therefore, currently in service The above two methods are not advisable to detect such workpieces, especially those with anti-corros...

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Application Information

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IPC IPC(8): G01N27/904
CPCG01N27/904
Inventor 林俊明沈功田卢超黄凤英吴晓瑜
Owner EDDYSUN (XIAMEN) ELECTRONICS CO LTD
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