隔水管表面缺陷ACFM快速检测系统开发

发布时间：2019-02-16 20:25

【摘要】：本文结合“十二五”国家科技重大专项课题“海洋深水油气田开发工程技术”子课题“深水钻井隔水管作业管理及安全评价技术研究”,针对当前常规单式探头和阵列探头对于隔水管表面缺陷检测的适应性差和效率低下的不足,围绕隔水管表面缺陷交流电磁场检测技术展开研究,建立隔水管表面缺陷交流电磁场检测有限元模型,分析激励探头和检测探头影响区域,优化设计链式探头搭建隔水管表面缺陷快速检测系统,对隔水管表面缺陷进行检测识别。本文围绕以下内容展开研究:(1)隔水管表面缺陷交流电磁场检测的数值模型建立与仿真分析借助ANSYS建立隔水管表面缺陷交流电磁场检测数值模型,提取隔水管表面电流密度和磁通密度,分析隔水管表面电磁场畸变规律,经实验验证表明数值模型建立正确,特征信号分布规律合理。(2)链式隔水管表面缺陷ACFM探头设计基于隔水管结构特点,为提高检测效率和适应性,提出一种新型链式隔水管表面缺陷ACFM检测探头,采用数值分析和实验研究相结合的方法,对激励探头影响区域和检测探头拾取范围等链式探头关键参数进行定量分析,计算激励探头和传感器排布参数,设计开发并制作链式探头。(3)隔水管表面缺陷快速检测系统的开发与实验测试优化设计隔水管表面裂纹缺陷快速检测系统软硬件模块,配合链式探头搭建隔水管表面裂纹缺陷ACFM快速检测系统,并对含有人工缺陷的平板试件和隔水管试件进行实验测试,结果表明所开发系统能够较好地实现缺陷的判定和快速定位,并且本系统采用链式阵列探头能够满足不同直径的隔水管表面缺陷的大范围快速检测的需要。
[Abstract]:In this paper, combined with the "12th Five-Year Plan" national science and technology major project, "Marine deepwater oil and gas field development engineering technology" sub-project "Deep water drilling riser operation management and safety evaluation technology research", Aiming at the lack of adaptability and low efficiency of conventional single probe and array probe for detecting surface defect of riser, the research on AC electromagnetic field detection technology of surface defect of riser is carried out. The finite element model of AC electromagnetic field detection for surface defect of riser is established. The influence area of exciting probe and detection probe is analyzed, and the chain probe is optimized to set up a rapid detection system for surface defect of riser, and to detect and identify the surface defect of riser. The main contents of this paper are as follows: (1) the numerical model and simulation analysis of AC electromagnetic field detection for surface defects of risers are established by using ANSYS to establish a numerical model of AC electromagnetic field detection for surface defects of risers. The current density and flux density on the surface of riser are extracted, and the law of electromagnetic field distortion on the surface of riser is analyzed. The experimental results show that the numerical model is correct. The characteristic signal distribution law is reasonable. (2) the design of ACFM probe for the surface defect of chained riser is based on the structural characteristics of the riser. In order to improve the efficiency and adaptability of the detection, a new type of ACFM probe for detecting the surface defect of the chained riser is proposed. Using the method of numerical analysis and experimental study, the key parameters of the chain probe, such as the influence area of the exciting probe and the range of pickup of the probe, are quantitatively analyzed, and the parameters of the excitation probe and the arrangement of the sensor are calculated. Design and manufacture of chain probe. (3) the development of rapid detection system for surface defects of riser and the optimization of experimental design software and hardware module of rapid detection system for surface crack defects of riser. The ACFM rapid detection system for surface crack defects of riser was built with chain probe, and the plate and riser specimens with artificial defects were tested experimentally. The results show that the developed system can detect defects and locate them quickly, and the chain array probe can meet the needs of rapid detection of surface defects of risers with different diameters.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE951;TH878

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