Fault detection method and system for fluid pipeline

Abstract

The invention provides a fluid pipeline fault detection method and system, which are used to solve the problems that the leakage and blockage detection method in the prior art cannot be applied to any pipeline and has low precision. It includes the following steps: on the specified leak detection and blockage detection section, according to the energy balance of the fluid in the pipeline, the fluid flow in the pipeline, and the pressure difference between the front and rear ends of the pipeline, map the mutual constraint relationship between the pipeline and the fluid; through machine self-learning, continuous Obtain the resistance value R and fluidity characteristic coefficient n along the pipeline as a normal reference sample; once the resistance R and fluidity characteristic coefficient n change, it indicates that the pipeline is in an abnormal state; capture the resistance R and fluidity characteristics along the pipeline The time and degree of the quantitative change of the coefficient n can identify the qualitative change failure state of the pipe section in blockage or leakage. Through the machine self-learning method, there is no need to observe the original parameters such as the condition of the pipeline erection, the shape of the section surface, the type of viscous and viscous media, and the speed of the flow rate, so it can be widely used.

Description

technical field [0001] The invention relates to the technical field of measurement and control, in particular to a method and system for detecting a fault of a fluid pipeline. Background technique [0002] Liquid and gaseous media travel through the pipeline for a long time, and will accumulate sediment on the wall of the pipeline. These dirt will cause the flow resistance to gradually increase during the subsequent transmission process, and will also cause electrochemical corrosion of the pipeline material. Corrosion damage, accelerating pipe perforation leakage. [0003] Due to various erosion effects, unpredictable external force damage and other factors, most of the initial leakage has its own unique concealment, which is not very intuitive and obvious, especially the trace leakage is difficult to find. [0004] Once a continuous leakage accident occurs, it will not only interfere with normal production, cause economic losses, but also cause major safety hazards, and th...

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Problems solved by technology

[0031] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a fluid pipeline fault detection method and system for solving the problems that the leakage and blockage detection method in the prior art cannot be applied to any pipeline and the accuracy is not high

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