Three-dimensional magnetic flux leakage imaging of pipelines to detect floating magnetized components
An imaging detection and pipeline technology, applied in pipeline systems, magnetic objects, electrical components, etc., can solve problems such as the need to improve the magnetic circuit structure of the detector, the incorrect posture of the detector, and the blocking of the pipeline by the detector, so as to improve the passing ability. and deformation adaptability, simple structure, the effect of reducing noise and interference
Active Publication Date: 2016-12-07
TSINGHUA UNIV
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Problems solved by technology
Although the support strength of the magnetic circuit structure is good, the adaptability to deformation is poor, and the environment inside the pipeline is complex, which will generate a lot of noise and interference during the detection process, which will easily lead to incorrect attitude of the detector, which may cause the detector to jam the pipeline
Therefore, the detector magnetic circuit structure needs to be improved
Method used
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[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0032] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Rear", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the de...
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Abstract
The invention discloses a floating magnetization component for pipeline three-dimensional magnetic flux leakage imaging detection, comprising: a core shaft; Evenly arranged at intervals in the circumferential direction of each floating magnetized block, at least a part of each floating magnetized block abuts against the inner wall of the pipeline, and each floating magnetized block includes: a magnetizer, which is formed as a column extending along the axial direction of the mandrel; two Magnetic parts, two magnetic parts are respectively arranged on the outer wall surface of the magnetizer and arranged at intervals along the front and rear directions; and a plurality of silicon steel sheets, the plurality of silicon steel sheets are respectively connected with the two magnetic parts, and the free ends of the plurality of silicon steel sheets are respectively abut against the inner wall of the pipeline; and a plurality of support assemblies, the plurality of support assemblies are respectively movably arranged between the plurality of floating magnetized blocks and the outer wall of the mandrel, and each support assembly respectively abuts against the inner wall of the magnetizer and The outer wall of the mandrel. The component has good magnetic permeability, simple structure, good applicability and accurate detection.
Description
technical field [0001] The present invention relates to the technical field of oil and gas pipeline detection, in particular, to a method for on-line detection of defects in oil and gas pipelines and a magnetic circuit structure design method, and more specifically, to a floating magnetized assembly for pipeline three-dimensional magnetic flux leakage imaging detection. Background technique [0002] With the development of oil and gas extraction technology, the supporting oil and gas pipeline transportation technology is also constantly improving. In particular, the turning radius of the oil and gas pipeline is small, only 1.5D (D is the diameter of the pipeline), which has a very high test on the passability of the detector, and the difficulty of magnetization increases. This requires the three-dimensional magnetic flux leakage imaging detector of oil and gas pipelines to have high passing capacity, deformation adaptability and magnetization reliability. Reasonable magnetic...
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IPC IPC(8): F17D5/02H01F13/00
Inventor 黄松岭王珅赵伟刘欢
Owner TSINGHUA UNIV