Multichannel pulse eddy current online monitoring system and monitoring method
A pulsed eddy current and monitoring system technology, which is applied in the direction of measuring devices, material analysis through electromagnetic means, instruments, etc., can solve the problems of thin pipe wall, small-diameter pipe corrosion, wear, and damage, and achieve high accuracy and convenient implementation , the effect of simple operation
Pending Publication Date: 2019-09-13
CHINA UNIV OF PETROLEUM (EAST CHINA)
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However, the service environment of pipelines is often affected by corrosive media, and with the extension of service time, corrosion and wear will inevitably occur in small-diameter pipelines. Compared with other pipelines, small-diameter pipelines have thinner walls, and the thinning area is not easy to hide It is found that it is easy to cause sudden damage accidents
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[0034] The specific implementation of the present invention will be further described with reference to the drawings and embodiments.
[0035] Such as figure 1 Shown is a schematic diagram of the structure of a multi-channel pulse eddy current monitoring system, including: a PC 1 for monitoring device parameter setting and monitoring data processing and display, pulse eddy current monitoring for pulse eddy current generation and pipeline defect data collection Device, PC 1 and pulse eddy current monitoring device realize wireless connection through Bluetooth and other equipment;
[0036] The PC 1 includes a parameter setting module 2, a split-screen display module 11, an image synthesis module 12, and a data processing module. Set the sampling frequency, select the amplitude gear, and select the acquisition mode through the parameter setting module 2. The sampling frequency can be set to 2Hz, 4Hz, 8Hz, 16Hz, 32Hz; the selected amplitude gear can be set The output voltage can be ad...
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The invention relates to a multichannel pulse eddy current online monitoring system, comprising: a PC for setting monitoring device parameters and processing and displaying monitoring data, and a pulse eddy current monitoring device for generating pulse eddy current and collecting pipeline defect data, wherein the PC is wirelessly connected to the pulse eddy current monitoring device. The PC comprises a parameter setting module, a split screen display module and an image synthesis module, and the pulse eddy current monitoring device comprises a pulse eddy current generation module, a power amplifying module, a high speed change-over switch, an array probe, a signal amplifying module, a signal conditioning module and a data collection module, which are electrically connected with each otherthrough conducting wires in sequence. The invention further provides a multichannel pulse eddy current online monitoring method, in which pipeline defect detection is achieved by using pulse eddy current signals. By adopting the multichannel pulse eddy current online monitoring system provided by the invention, real-time monitoring is achieved, and quality or safety problems are discovered, rectified and reformed in the process in time, thereby avoiding personal injury and property loss caused by major quality and safety accidents; and the operation is simple, the implementation is convenient, and the accuracy of the test result is high.
Description
Technical field [0001] The invention belongs to the technical field of non-destructive monitoring and testing, and specifically relates to a multi-channel pulse eddy current online monitoring system and a monitoring method. Background technique [0002] With the rapid development of world industry, pipelines have been widely used in various fields such as petrochemicals and marine engineering, and have become an indispensable part of modern industry. However, the service environment of pipelines is often affected by corrosive media, and with the extension of service time, corrosion and abrasion of small-diameter pipelines will inevitably occur. Compared with other pipelines, small-diameter pipelines have thin walls and it is not easy to conceal the thinned area. It is found that it is easy to cause sudden destruction accidents. Therefore, detecting the corrosion and wear of the pipeline and evaluating the service life of the pipeline are necessary means to avoid such accidents. ...
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IPC IPC(8): G01N27/90G01N27/904
CPCG01N27/9046G01N27/904G01N27/9006
Inventor 张大磊李同跃许红明杨留洋白舒宇金有海
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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