结合三维图形技术的综合法泄漏检测系统在中低压输水管道上的应用研究  

Research on the Application of the Combined Multiple Leak Detection System Based on Three-dimensional Graphic Technology on Medium and Low Pressure Water Transportation Pipeline

作　　者：朱智伟 ZHU Zhi-wei(Henan Water and Power Engineering Consulting Co.,Ltd,Zhengzhou 450000,China)

机构地区：[1]河南省水利勘测设计研究有限公司,郑州450000

出　　处：《中国农村水利水电》2021年第10期207-211,220,共6页China Rural Water and Hydropower

摘　　要：在中低压输水管道输送过程中,压力信号不可避免地受到例如水泵和其他外界因素带来的噪音的影响,泄漏所产生的压力波动易被高频率噪音所覆盖;另外,因管道压力较小而导致压力波衰减无法传播至管道两端从而对泄漏定位产生影响。因此,中低压管道对泄漏检测系统的性能有着更为严苛的要求。通过分析对比传统泄漏检测系统与结合三维图形的综合法泄漏检测系统原理差异,以及综合法对压力信号进行的降噪处理和对流量差变化的精确计算,系统可得到降噪后的压力波动信号以及准确的流量波动情况。此方法可提高中低压输水管道上对泄漏检测的准确性以及可靠性,是未来中低压输水管道泄漏检测的主要选择趋势。In the process of the medium/low pressure water pipeline transportation,the pressure signal will inevitably be affected by the noise brought by pumps and other external factors,resulting in the pressure fluctuation caused by leak is covered by high frequency noise.In addition,as the pressure of the pipeline is very low,the pressure ware cannot propagate to both ends of the pipeline because attenuation,which has an impact on the leak location.For all the above factors,the performance of the leak detection system used in the medium/low pressure pipeline should be highly demanding.Through an analysis and comparison of the differences between the traditional leakage detection system and the comprehensive leakage detection system combined with three-dimensional graphics,as well as the noise reduction processing of the pressure signal and the accurate calculation of the flow difference change,the comprehensive method system can obtain the pressure fluctuation signal and the accurate flow fluctuation curve after noise reduction.This method can improve the accuracy and reliability of leakage detection on medium/low pressure water transmission pipeline,the comprehensive leak detection system will be the main choice of the medium/low pressure pipeline in the future.

关 键 词：综合法泄漏检测 三维图形技术 中低压管道 

分 类 号：TV134.1[水利工程—水力学及河流动力学]