Underground pipe leakage detecting device and detecting method

Abstract

The invention provides an underground pipe leakage detecting device and a detecting method. The device consists of such parts as an ultrasonic flowing speed meter A, an ultrasonic emitter, a data processing module, an ultrasonic receiver, an ultrasonic flowing speed meter B and a pipe. The device can judge if an underground pipe leaks water through upper and lower flowing speeds measured by two ultrasonic flowing speed meters and a difference between the emitting time of the ultrasonic emitter and the receiving time of the ultrasonic receiver; and the position of the leakage place is determined during leaking. The device has the following beneficial effects: the position of the leaking point of the pipe can be precisely determined without excavating the ground, so that the labor cost is saved, and the urban environment tidiness can be maintained.

Description

technical field [0001] The invention relates to an underground pipeline water leakage detection device and a detection method thereof. Background technique [0002] Since the reform and opening up, with the continuous improvement of productivity and the rapid development of the national economy, my country has entered a stage of rapid urbanization. Deep underground water supply and heating pipelines are criss-crossed and dense like spider webs, extending to every corner of the city. Once there is a water leakage problem, it is difficult to find the location of the water leakage because the water seepage cannot be seen on the ground. However, if the leakage of the pipeline cannot be found in time, it will cause a great waste of water resources and heat energy. Therefore, it is very important to monitor the water supply and heating pipelines in real time, and to find and solve the leakage of the pipeline in time. things. [0003] Usually, to check for water leaks in pipes, p...

AI Technical Summary

Problems solved by technology

This method can only be carried out at night. First, it is limited in time. If there is a water leakage problem during the day, it will cause a great waste of energy and resources to wait until night to detect; secondly, it can only be inspected in a small area. Suitable for a wide range of leak detection and follow-up inspections of tap water and heating pipes

[0004] There is an electronic leak detection instrument that can be used for pipeline leakage detection. It has a host and two electronic ears. The sound wave characteristics transmitted by the electronic ear include waveform, amplitude, wavelength, frequency, phase, etc., and have filtering and calculation functions; in actual use, the engineering team usually uses an audiometer or the human ear to find the area with the loudest water leakage , and then according to the distribution map of underground pipelines, determine which pipeline or pipelines may be leaking, then dig both ends of the pipeline, and connect the two electronic ears of the electronic leakage instrument to the two ends of the pipeline. The phase difference of the sound waves transmitted by the electronic ear can be used to calculate the water leakage point on the pipe by analyzing the wavelength and wave velocity; The search process in the area where the source is located is also an extremely complicated and time-consuming process

[0005] The existence of water leakage points can be measured by ultrasonic flow meters. The method is to install two ultrasonic flow meters on the upper and lower streams of the pipeline. The flow rate measured by them can be concluded when the difference between the flow rates of the upper and lower streams is large enough. There is a water leak between the flow meters, but the exact location of the leak cannot be determined

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