發(fā)布時(shí)間：2018-02-11 12:02

  本文關(guān)鍵詞： 壓力管道 漏磁 有限元分析 可變徑管道檢測(cè)　出處：《中國(guó)安全生產(chǎn)科學(xué)技術(shù)》2016年12期 　論文類型：期刊論文

【摘要】：為了更好地支持壓力管道檢驗(yàn),降低事故率,本文基于漏磁檢測(cè)原理,利用有限元分析軟件建立了管道外漏磁檢測(cè)模型,對(duì)管道漏磁檢測(cè)進(jìn)行了仿真計(jì)算,得到了缺陷處漏磁場(chǎng)特征曲線,模擬了圓柱形缺陷對(duì)管道外壁漏磁場(chǎng)的影響,得出了不同參數(shù)缺陷對(duì)漏磁場(chǎng)的影響規(guī)律,并且基于理論和有限元計(jì)算結(jié)果試制了可變徑管道外漏磁檢測(cè)儀的樣機(jī),利用該檢測(cè)儀對(duì)壁厚為8mm的帶有人工缺陷的管道進(jìn)行掃描檢測(cè),研究不同參數(shù)缺陷對(duì)漏磁場(chǎng)信號(hào)的影響規(guī)律。結(jié)果表明,所得結(jié)果與有限元仿真的結(jié)果吻合良好,且缺陷檢測(cè)精度及效果滿足要求,另外,檢測(cè)裝置對(duì)內(nèi)外壁缺陷檢測(cè)同樣可行有效,適合特種設(shè)備(壓力管道)檢測(cè)的工程應(yīng)用。
[Abstract]:In order to better support the inspection of pressure pipeline and reduce the accident rate, based on the principle of magnetic flux leakage detection, the model of magnetic leakage detection outside the pipeline is established by using the finite element analysis software, and the simulation calculation of the magnetic flux leakage detection of pipeline is carried out. The characteristic curve of leakage magnetic field at defect is obtained, the influence of cylindrical defect on leakage magnetic field of outer wall of pipeline is simulated, and the influence law of different parameter defect on leakage magnetic field is obtained. Based on the theory and finite element calculation results, a prototype of external magnetic flux leakage detector for variable diameter pipeline is developed. The instrument is used to scan and detect the pipeline with manual defects in thickness of 8 mm. The effect of different parameter defects on magnetic field leakage signal is studied. The results show that the results are in good agreement with the results of finite element simulation, and the accuracy and effect of defect detection meet the requirements. The detection device is also feasible and effective for inner and outer wall defect detection, which is suitable for the engineering application of special equipment (pressure pipeline) detection.
【作者單位】： 杭州市特種設(shè)備檢測(cè)研究院;東北石油大學(xué)機(jī)械科學(xué)與工程學(xué)院;華中科技大學(xué)能源與動(dòng)力工程學(xué)院;
【基金】：國(guó)家質(zhì)量監(jiān)督檢驗(yàn)檢疫總局科技計(jì)劃項(xiàng)目(2016QK163) 浙江省質(zhì)量技術(shù)監(jiān)督系統(tǒng)科研計(jì)劃項(xiàng)目(20150236)
【分類號(hào)】：TE973.6

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