Eddy current testing system for pipeline nondestructive testing

A non-destructive testing and eddy current testing technology, applied in measuring devices, material analysis by electromagnetic means, instruments, etc., can solve the problems of low coupling between excitation coil and receiving coil, low sensitivity of detection probe and low lift-off height, etc. Energy transfer efficiency, improved detection capability, and high sensitivity

Pending Publication Date: 2021-11-12
SICHUAN DEYUAN PETROLEUM & GAS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem of low coupling between the excitation coil and the receiving coil of the existing eddy current detect

Method used

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  • Eddy current testing system for pipeline nondestructive testing
  • Eddy current testing system for pipeline nondestructive testing
  • Eddy current testing system for pipeline nondestructive testing

Examples

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Embodiment 1

[0045] like figure 1 As shown, in Embodiment 1, the eddy current testing system for non-destructive testing of pipelines includes a data processing unit, a first signal conditioning unit, a second signal conditioning unit and a detection probe, and the detection probe includes a mutual inductance excitation coil and a receiving coil, It also includes a passive resonant coil arranged between the exciting coil and the receiving coil; the data processing unit, the first signal conditioning unit, and the exciting coil are connected in sequence, and the receiving coil, the second signal conditioning unit, and the data processing unit are connected in sequence. Among them, the data processing unit is used to generate the excitation signal to the first signal conditioning unit, and at the same time, it is used to receive the detection information fed back by the second signal conditioning unit, and is also used for MPU calibration, RTC time correction, etc. As an option, the data pro...

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Abstract

The invention discloses an eddy current testing system for pipeline nondestructive testing, which belongs to the technical field of nondestructive testing, and comprises a data processing unit, a first signal conditioning unit, a second signal conditioning unit and a detection probe, the detection probe comprises an excitation coil, a receiving coil and a passive resonance coil, and the passive resonance coil is arranged between the excitation coil and the receiving coil. According to the invention, the detection does not need to add additional magnetization treatment equipment, so that the system volume is greatly reduced, the requirement of the detection system on the internal cleanliness of the pipeline is reduced, the pipeline passing ability of the detection system is improved, and the cost overhead of the system is greatly reduced; the passive resonance coil is introduced between the excitation coil and the receiving coil, so that coupling between the excitation coil and the receiving coil can be enhanced, the energy transmission efficiency is remarkably improved, the sensitivity of the detection probe is further improved, the probe can accurately detect pipeline defects at a higher lift-off height, and the defect detection capacity of the probe is improved.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing, in particular to an eddy current testing system for non-destructive testing of pipelines. Background technique [0002] Pipeline transportation is considered to be one of the safest and most economical transportation methods. During the operation and use of the pipeline, the pipeline body often has defects as time goes by. In the past few decades, accidents caused by pipeline defects have caused a large number of casualties and economic losses around the world. In order to detect pipeline defects in advance and eliminate potential safety hazards, pipeline companies around the world carry out periodic inspections on pipelines, discover and repair pipeline defects in time, and ensure safe and reliable operation of pipelines. [0003] At present, methods such as magnetic flux leakage testing and ultrasonic testing are widely used in pipeline defect detection, and have become an imp...

Claims

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Application Information

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IPC IPC(8): G01N27/904G01N27/90
CPCG01N27/904G01N27/9046G01N27/9073G01N27/9006
Inventor 高斌杨雨沛张勇谌梁姜世强
Owner SICHUAN DEYUAN PETROLEUM & GAS CO LTD
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