供水管网检漏技术现状及发展趋势

Leakage Testing Techniques and Prospect for Ductwork of Water Supply

我国城市多数供水设施较陈旧、管理体制不健全以及检测技术水平发展不均衡,导致城市供水漏失率在20%～30%,其中约70%是供水管道漏水造成的.简要介绍了供水管网检漏技术在世界上的发展概况和在我国的应用现状;阐述了目前常用的11种检漏技术的原理步骤、仪器设备及其适应性;重点分析了漏水声波检漏法在实际应用中存在的明显不足与产生原因.供水管网检漏技术在我国的发展趋势将由原始、简单、粗糙向现代高、精、尖转变.

The avevage rate of water supply leakage in our cities is between 25%～30%,due to the problems of outdated water supply facilities,unamplified management system and the disequilibrium of testing technique development,among which 70% leakege is caused in pipes.The international up-to-date development of testing ductwork fechnique of water supply is introduced togther with the present application in China.A further presentation is put forward about the 11 kinds of testing techniques,their principles,equipment and adaptabitites with an analysis of disadvanteses in the sound-wave testing method.The prospect of testing ductwork techniques in water supply in our country is discussed.There will be a transformation for the present techniques from simple,unexact and primitive to comprensive,precise and modern.