中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (3): 60-66.doi: 10.16265/j.cnki.issn1003-3033.2020.03.010

• 安全工程技术 • 上一篇    下一篇

大型储罐声发射技术下的安全评价方法

宋高峰1 高级工程师, 张延兵1 高级工程师, 孙培培2, 沈硕勋2, 王志荣**2 教授   

  1. 1.江苏省特种设备安全监督检验研究院 南通分院,江苏 南通 226011;
    2.南京工业大学 安全科学与工程学院,江苏 南京 211816
  • 收稿日期:2019-12-14 修回日期:2020-02-09 出版日期:2020-03-28 发布日期:2021-01-26
  • 通讯作者: **王志荣(1977—),男,江苏南京人,博士,教授,主要从事火灾爆炸、腐蚀安全防护、锂电子电池安全等方面的研究。wangzhirong@njtech.edu.cn。
  • 作者简介:宋高峰(1978—),男,江苏南京人,硕士,高级工程师,主要从事特种设备(承压类)方面的检测分析工作。E-mail:sgaofeng@163.com。
  • 基金资助:
    国家安全生产重大事故防治关键技术科技项目(jiangsu-0013-2017AQ)。

Safety evaluation method based on acoustic emission technology for large-scale storage tanks

SONG Gaofeng1, ZHANG Yanbing1, SUN Peipei2, SHEN Shuoxun2, WANG Zhirong2   

  1. 1. Branch of Nantong, Jiangsu Institute of Safety Supervision and Inspection of Special Equipment, Nantong Jiangsu 226011, China;
    2. College of Safety Science and Engineering, Nanjing Tech University, Nanjing Jiangsu 211816, China
  • Received:2019-12-14 Revised:2020-02-09 Online:2020-03-28 Published:2021-01-26

摘要: 为探究腐蚀声发射信号相关参数的变化特征,以常见的立式金属储罐为对象开展试验,研究储罐腐蚀声发射源特性,建立基于反向传播(BP)神经网络的安全评价模型,并开展应用实例研究。结果表明:声发射活性和强度会随着腐蚀反应的剧烈程度发生变化,且在腐蚀活性不同时期腐蚀信号的波形表现出连续型、突发型和混合型3种特征,频率主要集中在20~60 kHz;BP神经网络模型输出结果与实际评价结果一致,证明该方法具有一定的有效性。

关键词: 大型储罐, 腐蚀信号, 声发射活性及强度, 声发射检测, 反向传播(BP)神经网络模型

Abstract: In order to explore variation characteristics of related parameters of corrosion acoustic emission signals, experiment was carried out with a common vertical metal storage tank as research object to study characteristics of its acoustic emission source for corrosion. Then, a safety evaluation model based on BP neural network was established, and case study of its application was carried out. The results show that acoustic emission activity and intensity will change along with severity of corrosion reaction, and wave forms of corrosion signals in different periods of corrosion activity will exhibit three types, continuous, abrupt and hybrid types with its frequencies mainly concentrating between 20-60 kHz. The output of BP neural network model is consistent with actual evaluation results, which proves its feasibility and effectiveness.

Key words: large storage tank, corrosion signal, acoustic emission activity and intensity, acoustic emission monitoring, back propagation (BP) neural network model

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