Abstract
To test the effectiveness of the detection and positioning technology of the pipe leakage, the propagation law of pipeline leakage signal is studied in this paper, and a pipeline leakage signal simulation and generation system is proposed. It can simulate the leakage pressure wave signals at different positions of the pipeline. Changing pipe’s parameters though the computer, the simulation and output of the leakage signal under various working conditions can be realized. It can test the reliability and accuracy of the detection and location technology of the pipe leakage, and verify the applicability of the pipe leakage detection and location technology to different pipe structures. The results show that the output signal of system can replace the real signal, and located the pre-set leakage point by cross-correlation method. The purpose of studying the effectiveness and accuracy of the existing leak location algorithm base on largescale complex pipe network system in laboratory conditions was realized.
Highlights
When the pipe network system is built, it will be used for a long time under harsh working environment
In practice, the pipeline leak detection and positioning system cannot be directly developed and evaluated through the actual pipe network system, and there is a lack of effective reliability test
PSoC calculates the pressure wave signals at various sensors according to the input parameters and the law of negative pressure wave propagation along the pipeline, and outputs 0-5V voltage signals through pulse width modulation (PWM)
Summary
When the pipe network system is built, it will be used for a long time under harsh working environment. In practice, the pipeline leak detection and positioning system cannot be directly developed and evaluated through the actual pipe network system, and there is a lack of effective reliability test. There is in need to develop a simulation system that can simulate the leakage signal of sensors at different positions in the pipeline network. Such a system can bring high social and economic benefits. Cao Jiahao [7]used the Flowmaster software to establish the corresponding bifurcation structure model, made a comparative analysis with the programming results and proposed a pipeline leakage detection and positioning method. The leakage analogue signal generated can be collected by the leakage detection equipment, and the data collected can be analyzed and the positioning technology can be studied
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