成品油埋地起伏管道泄漏监测识别研究OA

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.