Parallel pipeline non-contact harmonic magnetic field diagnosis method and indoor experiment system

A harmonic magnetic field and experimental system technology, applied in the direction of material magnetic variables, etc., can solve problems such as poor anti-interference ability, complicated operation, and bulky instruments, and achieve the effect of high magnetic field strength, high sensitivity, and enhanced advantages

Pending Publication Date: 2021-04-30
BEIJING UNIV OF TECH
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] External detection technologies for pipe damage mainly include TEM transient electromagnetic method, German NoPig multi-frequency harmonic current method, and Russian MTM magnetic detection technology. High detection rate and other shortcomings, and can only achieve wall thickness thinning detection; MTM detection technology detects the magnetic field of the pipeline itself, resulting in poor anti-interference ability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Parallel pipeline non-contact harmonic magnetic field diagnosis method and indoor experiment system
  • Parallel pipeline non-contact harmonic magnetic field diagnosis method and indoor experiment system
  • Parallel pipeline non-contact harmonic magnetic field diagnosis method and indoor experiment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings. like figure 1 As shown in the overall structure diagram, a parallel pipeline non-contact harmonic magnetic field diagnosis method and an indoor experimental system provided by the present invention include an experimental system frame (1), a parallel pipeline system (2), a loading module (3) and a detection module ( 4).

[0037] The present invention will be further described below in combination with specific embodiments and accompanying drawings.

[0038] figure 2 It is a structural schematic diagram of the experimental system frame (1) of the present invention, the experimental system frame (1) is made up of mounting bracket (5), pipeline sliding bracket (6) and corner piece (7), and is used for installing parallel pipeline system (2), Detect the guide rail platform (16) and the single-rod piston double-acting hydraulic cyli...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a parallel pipeline non-contact harmonic magnetic field diagnosis method and an indoor experiment system. The parallel pipeline non-contact harmonic magnetic field diagnosis system comprises an experiment system frame (1), a parallel pipeline system (2), a loading module (3) and a detection module (4). By adjusting the distance between the parallel interference pipeline (10) and the to-be-tested target pipeline (8) and the load applied by the loading module (3) to the to-be-tested target pipeline (8), the real working condition of the to-be-tested target pipeline (8) can be simulated. The harmonic power supply (18) loads a harmonic signal to the harmonic magnetic field excitation array coil (35) so as to emit a low-frequency high-frequency harmonic electromagnetic field to the to-be-tested target pipeline (8), and the damage state of the to-be-tested target pipeline (8) can be obtained by collecting and processing a reflection echo signal of the to-be-tested target pipeline (8). According to the harmonic magnetic field diagnosis method and the experimental system, pipeline damage ground excavation-free diagnosis under different parallel distances and different detection heights of the pipelines can be achieved.

Description

technical field [0001] The invention belongs to the field of pipeline damage detection, and in particular relates to a non-contact harmonic magnetic field diagnosis method for parallel pipelines and an indoor experiment system. At the same time, it can simulate pipeline damage at different parallel distances and different detection heights without excavating the ground, and has a structure The advantages of simplicity, convenient adjustment, high detection accuracy, short detection time and low detection cost improve the efficiency of pipeline detection Background technique [0002] External detection technologies for pipe damage mainly include TEM transient electromagnetic method, German NoPig multi-frequency harmonic current method, and Russian MTM magnetic detection technology. High detection rate and other shortcomings, and can only achieve wall thickness thinning detection; MTM detection technology detects the magnetic field of the pipeline itself, resulting in poor ant...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/82
CPCG01N27/82
Inventor 陈迎春王昌王新华段宇赵以振邓茗
Owner BEIJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap