Underground pipeline leakage monitoring method and device

Abstract

The invention discloses an underground pipeline leakage monitoring method and device. A signal collecting belt, a plurality of probes, a data terminal and an upper computer are included. The signal collecting belt is attached to the outer wall of an underground pipeline or arranged to be adjacent to underground pipeline and extends in the extending direction of the underground pipeline. The multiple probes are arranged on the signal collecting belt at intervals in the extending direction of the underground pipeline and used for collecting the specific resistance of the soil. The data terminalis connected with the signal collecting belt, receives the soil specific resistance collected by the multiple probes through the signal collecting belt and transmits the soil specific resistance to the upper computer, and the upper computer conducts calculation, judges whether the leakage accident happens to the underground pipeline or not and positions leakage points. Whether the leakage accidenthappens to the underground pipeline or not is judged by detecting the specific resistance changes of the soil around the underground pipeline, operation is simple, the detection result is accurate, the automation degree is high, and the leakage point positions of the underground pipeline can be rapidly and accurately positioned.

Description

technical field [0001] The invention belongs to the technical field of underground pipeline networks, and in particular relates to a device and method for monitoring whether there is leakage in underground pipelines. Background technique [0002] Underground pipelines are pipelines laid underground for transporting liquids, gases or loose solids. With the rapid development of urban construction, urban underground pipelines are becoming more and more dense. Affected by the service life and other factors, underground pipelines may leak or even leak, which will affect the surrounding environment and even cause pollution accidents. Therefore, the monitoring of pipeline leakage is becoming increasingly important. [0003] For underground liquid pipelines that transport liquids, they can be divided into two types: pressurized pipelines and non-pressurized pipelines according to the pressure-bearing form. Among them, the pressurized pipeline generally adopts the pressure sensing ...

AI Technical Summary

Problems solved by technology

Among them, the pressurized pipeline generally adopts the pressure sensing method to monitor whether there is a leakage problem in the pipeline, which is easy to use and has high sensitivity, but the requirements for the pipeline are relatively high, and it is difficult to locate the leakage point

For the monitoring of non-pressure pipelines, methods such as monitoring pipeline temperature, liquid velocity (flow rate) in the pipeline, ultrasonic waves, and sound waves are often used. The disadvantages are that they can only monitor discrete points, or they are expensive, or their positioning is vague.

In addition, there is also a method of simulating the accident location through monitoring data software simulation, and the results are often quite different from the actual situation.

Therefore, there is still a lack of a device that can automatically and long-term monitor the leakage point and leakage degree of underground pipelines and automatically locate them.

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