摘要
成品油管道泄漏会造成环境污染,威胁居民的生命安全,因此对成品油管道泄漏进行监测和识别具有重要意义。建立成品油起伏管道泄漏监测识别模型,并通过控制阀门开度制造压力波,监测识别管道泄漏位置,研究了阀门开度、阀门起闭间隔时间对泄漏定位精度的影响。结果表明,泄漏监测识别模型对中孔泄漏识别精度较高,而对小孔和大孔的识别预测能力较低,泄漏定位的相对误差较大;当阀门开度由90%分别降至10%、30%和50%时,压力波波动信号的振动幅度均降低,通过泄漏监测识别模型计算的泄漏定位的相对误差逐渐增大,推荐阀门开度由90%降至10%;随着阀门启闭间隔时间的增加,因压力波信号和压力波返回信号相互影响,通过泄漏监测识别模型计算的泄漏定位的相对误差越来越大,推荐阀门启闭间隔时间为1 s。
Leakage of refined oil pipeline can cause environmental pollution and threaten the safety of residents'lives and properties,making leakage monitoring and identification critical.This study establishes a leakage monitoring and identification model for undulating buried pipelines,generates pressure waves by controlling valve openings,and monitors and identifies leakage locations.The effects of valve opening and valve opening/closing interval time on leakage localization accuracy were analyzed.Results show that the model exhibits high accuracy for identifying medium-sized hole leaks but lower prediction capabilities for small and large holes,resulting in larger relative errors in leakage localization.When the valve opening decreases from 90% to 10%,30%,and 50%,the amplitude of pressure wave signals decreases,and the relative error in leakage localization calculated by the model gradually increases.A valve opening of 10% is recommended.As the valve opening/closing interval time increases,the relative error in leakage localization grows due to interactions between pressure wave signals and reflected signals,with an optimal interval time of 1 second recommended.
作者
李躬行
LI Gongxing(China Petroleum Chongqing Sales Company,Chongqing 400043,China)
出处
《石油化工高等学校学报》
2025年第2期48-53,共6页
Journal of Petrochemical Universities
基金
浙江省科技计划项目(2022C33150)。
关键词
管道
泄漏
成品油
监测识别
主动
Pipeline
Leakage
Finished oil
Monitoring and identification
Active
