Acoustic wave leakage detecting and positioning device

Abstract

The invention relates to a pipe leak detection locating device, in particular to a sound wave leak detection locating device, which comprises a plurality of acoustic sensors arranged on the pipe, a plurality of field data acquisition units, a central server and a communication network. In the field data acquisition units, a preamplifier is connected with the acoustic sensors and amplifies simulated sound wave signals collected by the acoustic sensors; the output end of the preamplifier is connected with an A / D converter by a timing data acquisition module; the simulated sound wave signals finish analog-to-digital conversion by the timing data acquisition module to become digital signals which are delivered into the centre server by the communication network. The locating device accurately gives time by an embedded PC plus data acquisition plus GPS, has low cost and good performance, can use multiple network communication, dual network redundancy and mutual backup; the nodes supported by the locating device are 256 and can fully meet the requirements of long-distance transport pipes; the locating device has fast detection speed, high detection precision, low rate of missing report and misstatement rate, etc.

Description

technical field [0001] The invention relates to a pipeline leak detection and positioning device, in particular to an acoustic leakage detection and positioning device for detecting pressure fluid pipeline leakage and leakage position. Background technique [0002] The main function of the oil and gas pipeline leakage detection and positioning device is to detect and locate the fluid leakage and leakage location of the long-distance pipeline, timely repair and ensure the production and transportation safety of the oil and gas pipeline. The fluid transported by the long-distance pipeline can be gas or liquid. [0003] US Patent No. 6,389,881 discloses a method and device for monitoring pipeline leaks and locating leaks. The method detects leaks by capturing the acoustic signals generated by the leaks occurring in pipelines containing gas or fluid under pressure. By comparing and filtering models to reduce the false alarm rate, increase system sensitivity, and improve leak l...

AI Technical Summary

Problems solved by technology

At the same time, due to the on-site processing of the collected data, each processor needs to be equipped with digital information originally recorded in the on-site computer, which makes the structure of the on-site processor very large, and the cost will be very high. When updating, the signal in each processor needs to be updated, which relatively increases the workload, and this processed signal requires a special signal transmission line, which also increases the cost

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