Defect detection device for small diameter coiled tubing based on three-axis magnetic flux leakage detection
A technology for magnetic flux leakage detection and detection devices, which is applied in the direction of material magnetic variables, etc., can solve problems such as large size, achieve high detection accuracy, reduce data transmission costs, and reduce signal transmission costs.
Inactive Publication Date: 2018-08-03
CHINA UNIV OF PETROLEUM (BEIJING)
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[0007] In order to overcome the problem that the existing magnetic flux leakage detection device has a large size and is not suitable for detecting defects in small-diameter coiled tubing, the present invention provides a small-diameter coiled tubing internal defect detection device based on three-axis magnetic flux leakage detection. The small-diameter coiled tubing internal defect detection device based on three-axis magnetic flux leakage detection adopts a MEMS three-axis magnetic sensor and has a small and exquisite structure. And the detection accuracy is high
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[0028] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0029] Such as figure 1 and figure 2 As shown, the present invention provides a small-diameter coiled tubing internal defect detection device based on three-axis magnetic flux leakage detection, including a support shaft 1, a magnetic flux leakage detection assembly and a control unit. The magnetic flux leakage detection assembly is arranged on the support shaft 1, and the magnetic flux leakage detection assembly includes a MEMS three-axis magnetic sensor 6, which can detect the magnetic flux in the pipeline to be tested (such as a coiled tubing with a pipe diameter of 20 mm to 50 mm). MFL signal. The control unit includes a data processing module and a wireless signal transmission module, ...
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The invention provides a small-diameter coiled tubing internal defect detection device based on three-axis magnetic flux leakage detection. The small-diameter coiled tubing internal defect detection device based on three-axis magnetic flux leakage detection includes: a support shaft; a magnetic flux leakage detection component, which is set On the support shaft, the magnetic flux leakage detection component includes a MEMS three-axis magnetic sensor, which can detect the magnetic flux leakage signal in the pipeline to be tested; the control unit includes a data processing module, which can detect the magnetic flux leakage signal in the pipeline The magnetic flux leakage signal detected by the magnetic detection component is processed. The small-diameter coiled tubing internal defect detection device based on three-axis magnetic flux leakage detection adopts MEMS three-axis magnetic sensor and has a small and exquisite structure. And the detection accuracy is high.
Description
technical field [0001] The invention relates to an internal defect detection device for oil pipes, in particular to an internal defect detection device for small-diameter coiled oil pipes based on three-axis magnetic flux leakage detection. Background technique [0002] At present, pipelines are mainly used for long-distance transportation of oil and natural gas. Oil and gas pipelines have excellent characteristics such as high strength, corrosion resistance, and low cost. About half of the active pipelines in the world have been used for decades, and most of the oil and gas pipelines in my country were built in the early 1970s, and they have also entered a period of frequent accidents. Pipeline accidents caused by aging pipelines are frequent every year, and the potential danger is very high. Big. In order to prevent accidents such as corrosion holes, cracks, and fractures in oil and gas pipelines, my country invests a huge amount of money every year to maintain, inspect an...
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IPC IPC(8): G01N27/83
Inventor 贾晓丽冯程宝刘书海张仕民田博显陶志杰彭振龙
Owner CHINA UNIV OF PETROLEUM (BEIJING)