Suspension type magnetic flux leakage detection module

A magnetic flux leakage detection and suspension technology, applied in the direction of material magnetic variables, etc., can solve the problem of reducing the detection accuracy of the detection box, and achieve the effects of reducing the detection energy consumption, improving the detection accuracy and improving the fit.

Pending Publication Date: 2020-08-25
智云安科技(北京)有限公司
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Problems solved by technology

[0004] Most of the existing variable-diameter magnetic flux leakage detectors only realize the variable-diameter function in the walking mechanism, guiding mechanism and other parts. When in use, the detection mechanism is still fixed with the detector bracket. Therefore, when the diameter of the measured object changes, the magnet module The distance from the surface to be tested also changes accordingly, thus changing the closed magnetic circuit formed by the magnet, tube wall, and magnetic permeable module. In this way, the detection accuracy of the detection box is greatly reduced

Method used

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  • Suspension type magnetic flux leakage detection module

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with embodiment:

[0026] A suspended magnetic flux leakage detection module, comprising:

[0027] The magnetic flux leakage detection mechanism is used to detect the defects of the pipe wall;

[0028] The suspension connection mechanism, the magnetic flux leakage detection mechanism is connected with the detector bracket 1 through the suspension connection mechanism, and the suspension connection mechanism is used to enable the magnetic flux leakage detection mechanism to float inside and outside with the change of pipe diameter.

[0029] Further, the magnetic flux leakage detection mechanism includes a magnetic conduction module 12, the outer two ends of the magnetic conduction module 12 are respectively fixed with a front magnet module 7 and a rear magnet module 11, between the front magnet module 7 and the rear magnet module 11 A detection box 9 is provided.

[0030] Further, the detection box 9 ...

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Abstract

The invention provides a suspension type magnetic flux leakage detection module, which comprises a magnetic flux leakage detection mechanism used for detecting pipe wall defects; and the magnetic fluxleakage detection mechanism is connected with a detector bracket through a suspension connection mechanism. The suspension connection mechanism is used for enabling the magnetic flux leakage detection mechanism to float inwards and outwards along with the change of the pipe diameter. According to the suspension connection mechanism, the magnetic flux leakage detection mechanism can realize the actions of hole shrinkage and opening recovery, so that the detection box can be attached to a detected surface as much as possible, and the detection precision is improved; the detection box utilizes an auxiliary suspension mechanism to further improve the fitness between the detection box and a detected surface, so that the detection precision is further improved; and the configured rollers can reduce the advancing resistance, so that the detection energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of in-pipeline detectors, in particular to a suspended magnetic flux leakage detection module. Background technique [0002] Pipelines are an important way of long-distance transportation of oil and natural gas. Pipelines work under high pressure, long distances, and harsh external environments. Due to various reasons such as transmission medium corrosion, stress, construction damage, and natural disasters, various defects will occur on the pipe wall. , These defects are very harmful to the safe operation of the pipeline, and early detection of defects is an important means to guide pipeline maintenance work and maintain pipeline integrity. At present, the most common in-service detection method for pipeline defects is the in-pipeline detection technology, especially the magnetic flux leakage detection technology. [0003] Flux leakage detection means that after the ferromagnetic material is magnetized, a l...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/83
CPCG01N27/83
Inventor 翁志良贾开明何帮喜
Owner 智云安科技(北京)有限公司
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