Leakage detecting method for urban water supply pipes

Abstract

The invention pertains to the technical field of leakage detection of pipes, and in particular relates to a leakage detection technology comprehensively utilizing a leakage noise recorder, a manual leakage listening detecting rod and the like, and an application method of the leakage detection technology to the urban water supply network. Based on the noise leakage detecting method of a leakage recorder, the signals of the leakage recorder are analyzed by a water supply network geographic information system (GIS) platform, and the key check area is determined; and further, the key check area is detected by comprehensively using the leakage recorder and the manual leakage listening detecting method so as to determine the leakage and locate the leakage point. The leakage detecting method combines the leakage detecting method by using the leakage recorder which has extremely high sensitivity on sound signals with the manual leakage listening detecting method, and is used for analyzing the leakage signals by utilizing the GIS platform, thereby not only effectively avoiding aimless check of a large-scale pipe network by using the manual leakage listening detecting method independently, but also avoiding a great quantity of misinformation signals by utilizing the leakage recorder independently and heavy check work caused thereby. The leakage detecting method not only can be used for detecting leakage of urban water supply networks, but also can be used for detecting leakage of pipes of urban reclaimed water supply networks, industrial oil pipes, industrial circulating cooling water pipes and the like.

Description

Technical field [0001] The invention belongs to the technical field of pipeline leakage detection, and particularly relates to a leakage detection technology that comprehensively utilizes a leakage noise loss recorder, an artificial hearing stick, etc., and an application method thereof in the leakage detection of an urban water supply pipe network. Background technique [0002] Pipeline leakage is a common problem faced by many urban water supply systems in our country. A survey of water supply companies in 509 cities across the country shows that the average leakage rate is about 9.79%, of which 192 are below 8%, accounting for 37.72%; 8%-10% are 95, accounting for 18.66%; more than 10% are 222 , Accounting for 43.62%. Even for cities with a certain scale and management level, the leakage rate of more than half of the enterprises exceeds the national standard level of 8%, and the amount of water lost every day in my country reaches tens of billions of meters. 3 . The leakage ...

AI Technical Summary

Problems solved by technology

However, in practical applications, it is found that the sound signal detection capability of the leakage recorder is too sensitive, and the signal filtering method is not optimized enough, etc., often leads to the phenomenon of "false alarm" of many leakage recorders, and the alarm rate in the application process of many cities is between More than 70%, so a lot of energy has to be spent on investigation

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