For the cause of much leak, the basis of instantaneous negative pressure wave to detect the pipeline leak is analyzed in this dissertation. The theory and advantage of the lifting wavelet transform is analyzed.
本文针对大泄漏信号检测,介绍了瞬态负压波法管道泄漏检测的基本原理,分析了提升小波的基本原理及其优点,给出了运用提升小波提取泄漏信号的流程图,通过在管道上实际采集数据的验证取得了满意的效果。
参考来源 - 基于瞬变流法管道泄漏检测若干技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
采用了瞬态负压波法、流量输差法和压力流量综合法等多种泄漏诊断方法。
Several leak diagnosis methods such as instantaneous negative pressure wave, flow-lack, and hybrid diagnostic method were used.
分析了热油输送管道沿程瞬态负压波传播速度的变化，采取两种搜索方法数值积分求解泄漏点位置。
The velocity change of instantaneous negative pressure wave along the pipeline is analyzed when hot oil is transported. Two searching methods are applied to locate leakage through numerical integral.
针对此问题，采用了输差法进行泄漏的检测与报警、瞬态负压波法与稳态相关时延分析法相结合进行泄漏点的实时定位技术。
It is based on the measuring the difference between the input and autput of the pipeline and by using the combination of the WSV and the SRDA to locate the leakage.
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