输氢管路球阀内漏声发射检测信号分析  

Analysis of Acoustic Emission Detection Signal for Internal Leakage of Ball Valve in Hydrogen Transmission Pipeline

作　　者：邓波 郭少宏[1] 孙海洋 丁利 徐燕健 DENG Bo;GUO Shao-hong;SUN Hai-yang;DING Li;XU Yan-jian(Guangdong Special Equipment Testing Institute Foshan Testing Institute,Foshan 528000,Guangdong,China;South China University of Technology,Guangzhou 510000,Guangdong,China)

机构地区：[1]广东省特种设备检测研究院佛山检测院,广东佛山528000 [2]华南理工大学,广东广州510000

出　　处：《阀门》2024年第10期1205-1211,共7页Chinese Journal of Valve

基　　金：广东省特种设备检测研究院科技项目(2022CY-2-02)。

摘　　要：针对输氢管路阀门内漏情况,本文基于加氢制氢一体化站搭建实验平台,采用声发射技术检测,实验结果确认了声发射特征参数RMS(有效值电压)与ASL(平均信号电压)对阀门内漏信号的有效性和可靠性;发生泄漏时ASL与RMS均明显增大,其中RMS的检测较为敏感,发生泄漏时RMS增大1~2个数量级。研究内漏信号在不同阀门压力和不同泄漏程度(阀门开度模拟)下的变化趋势,为声发射应用于输氢管路阀门内漏检测定性判定的准确性和效率提供科学依据。Aiming at the internal leakage of hydrogen pipeline valves,this paper builds an experimental platform based on the integrated station of hydrogenation and hydrogen production,and uses acoustic emission technology to detect.The experimental results confirm the effectiveness and reliability of acoustic emission characteristic parameters RMS(effective value voltage)and ASL(average signal voltage)for valve internal leakage signals.When leakage occurs,both ASL and RMS increase significantly,and the detection of RMS is more sensitive.When leakage occurs,RMS increases by 1 to 2 orders of magnitude.The variation trend of internal leakage signal under different valve pressure and different leakage degree(valve opening simulation)is studied,which provides a scientific basis for the accuracy and efficiency of acoustic emission applied to the qualitative determination of internal leakage detection in hydrogen pipeline valves.

关 键 词：输氢管路 阀门内漏 声发射技术 实验模拟 

分 类 号：TH134[机械工程—机械制造及自动化]