【摘要】：本文結(jié)合“十二五”國(guó)家科技重大專(zhuān)項(xiàng)課題“海洋深水油氣田開(kāi)發(fā)工程技術(shù)”子課題“深水鉆井隔水管作業(yè)管理及安全評(píng)價(jià)技術(shù)研究”,針對(duì)當(dāng)前常規(guī)單式探頭和陣列探頭對(duì)于隔水管表面缺陷檢測(cè)的適應(yīng)性差和效率低下的不足,圍繞隔水管表面缺陷交流電磁場(chǎng)檢測(cè)技術(shù)展開(kāi)研究,建立隔水管表面缺陷交流電磁場(chǎng)檢測(cè)有限元模型,分析激勵(lì)探頭和檢測(cè)探頭影響區(qū)域,優(yōu)化設(shè)計(jì)鏈?zhǔn)教筋^搭建隔水管表面缺陷快速檢測(cè)系統(tǒng),對(duì)隔水管表面缺陷進(jìn)行檢測(cè)識(shí)別。本文圍繞以下內(nèi)容展開(kāi)研究:(1)隔水管表面缺陷交流電磁場(chǎng)檢測(cè)的數(shù)值模型建立與仿真分析借助ANSYS建立隔水管表面缺陷交流電磁場(chǎng)檢測(cè)數(shù)值模型,提取隔水管表面電流密度和磁通密度,分析隔水管表面電磁場(chǎng)畸變規(guī)律,經(jīng)實(shí)驗(yàn)驗(yàn)證表明數(shù)值模型建立正確,特征信號(hào)分布規(guī)律合理。(2)鏈?zhǔn)礁羲鼙砻嫒毕軦CFM探頭設(shè)計(jì)基于隔水管結(jié)構(gòu)特點(diǎn),為提高檢測(cè)效率和適應(yīng)性,提出一種新型鏈?zhǔn)礁羲鼙砻嫒毕軦CFM檢測(cè)探頭,采用數(shù)值分析和實(shí)驗(yàn)研究相結(jié)合的方法,對(duì)激勵(lì)探頭影響區(qū)域和檢測(cè)探頭拾取范圍等鏈?zhǔn)教筋^關(guān)鍵參數(shù)進(jìn)行定量分析,計(jì)算激勵(lì)探頭和傳感器排布參數(shù),設(shè)計(jì)開(kāi)發(fā)并制作鏈?zhǔn)教筋^。(3)隔水管表面缺陷快速檢測(cè)系統(tǒng)的開(kāi)發(fā)與實(shí)驗(yàn)測(cè)試優(yōu)化設(shè)計(jì)隔水管表面裂紋缺陷快速檢測(cè)系統(tǒng)軟硬件模塊,配合鏈?zhǔn)教筋^搭建隔水管表面裂紋缺陷ACFM快速檢測(cè)系統(tǒng),并對(duì)含有人工缺陷的平板試件和隔水管試件進(jìn)行實(shí)驗(yàn)測(cè)試,結(jié)果表明所開(kāi)發(fā)系統(tǒng)能夠較好地實(shí)現(xiàn)缺陷的判定和快速定位,并且本系統(tǒng)采用鏈?zhǔn)疥嚵刑筋^能夠滿(mǎn)足不同直徑的隔水管表面缺陷的大范圍快速檢測(cè)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.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TE951;TH878

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