Small leakage detection system for liquid pipeline

Abstract

The invention discloses a small leakage detection system for a liquid pipeline and relates to the technical fields of tests not included in other classes, acoustic wave measurement and pipeline systems. On the premise of not changing technological processes of current pipelines, a leakage detection ball is sent out by a pipe cleaner ball sending device and flows along with a medium in the pipeline; meanwhile, acoustic signals inside the pipeline and state information of the leakage detection ball are acquired, stored and tagged with time labels; after the leakage detection ball is collected back from a ball collecting bucket, the small leakage detection system is connected with an upper computer, so that the acoustic information stored in the pipeline and the state information of the leakage detection ball are obtained; the obtained acoustic information is directly displayed in an oscillograph on the upper computer; except a ball sending bucket and the ball collecting bucket, if an acoustic amplitude is higher than that of noise in the pipeline, the corresponding time is judged to be the leakage point and recorded; according to the recorded time of the leakage point, the state information of the leakage detection ball is subjected to quadratic integral so as to obtain displacement of the leakage detection ball relative to the ball sending bucket, namely the leakage position. The small leakage detection system for the liquid pipeline can detect small and even tiny leakages and is high in sensitivity.

Description

technical field [0001] The invention is a small leakage detection and leakage location system of a liquid pipeline. It relates to the technical field of measurement, measurement of sound waves and piping system not covered by other classes. technical background [0002] With the continuous development of the pipeline transportation industry, the increase of pipelines, the extension of pipeline laying distance, the increase of pipeline service period, and the unavoidable factors such as aging and corrosion of equipment, operational wear and geography, climate and environment changes and man-made damage, once leakage will not only Cause huge economic losses, and will cause environmental pollution, casualties and so on. Therefore, accurate detection and accurate location of pipeline leakage are of great practical significance to improve the management level of pipeline transportation and reduce economic losses and environmental pollution. [0003] At present, there are many p...

AI Technical Summary

Problems solved by technology

[0005] Although these technologies all claim to be able to solve the problem of leak detection of liquid pipelines, since pipelines are large-scale linear underground structures, objective factors such as liquid properties and geographical environment along the way greatly affect the stability and reliability of various systems. and have a direct impact on detection sensitivity and practicality

Therefore, the existing real-time leak monitoring technology has a significant effect on the detection of large leaks, but cannot detect small leaks; the existing non-real-time detection has a large workload and is difficult to implement for buried pipelines

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