A Pipeline Leak Location Method Based on Fuzzy Reasoning

Abstract

The present invention provides a method for locating pipeline leakage based on fuzzy reasoning, which includes: real-time collection of pressure signals and temperature signals at both ends of the pipeline; if there is a pressure mutation signal caused by non-working condition adjustment in the real-time collected pressure signals at both ends of the pipeline, If there is a leakage point in the current pipeline, calculate the time difference between the pressure mutation signal reaching the first and last ends of the pipeline; use the negative pressure wave method, the generalized recurrent neural network positioning method, and the temperature gradient method to locate the distance from the pipeline leakage point to the first end of the pipeline; according to the use of negative pressure wave method, generalized recurrent neural network positioning method, and temperature gradient method. The pressure wave method, generalized recursive neural network positioning method, and temperature gradient method are used to locate the distance from the pipeline leakage point to the head end of the pipeline, and the fuzzy inference algorithm is used to locate the leakage point. Three different positioning methods are used to locate the pipeline leakage point. After fuzzy reasoning and fish swarm algorithm adaptive optimization of membership function parameters, the three positioning results are given different confidence levels, thereby achieving precise location of the leakage point.

Description

technical field [0001] The invention belongs to the technical field of pipeline detection, and in particular relates to a method for locating pipeline leakage based on fuzzy reasoning. Background technique [0002] With the increase of oil pipelines and the increase of pipeline service time, the safety status of pipeline transportation is not optimistic. The aging degree of many pipelines is relatively serious, and has entered a period of frequent leakage accidents. In addition, the phenomenon of man-made sabotage of pipelines to steal oil resources is also quite serious, bringing major security risks. Therefore, pipeline leakage detection has become an important work content of pipeline safety production management, and the location of pipeline leakage points has become the top priority in the work. [0003] At present, various methods such as temperature gradient method, negative pressure wave method and pipeline model method have appeared to locate the leakage point of ...

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Problems solved by technology

[0003] At present, various methods such as temperature gradient method, negative pressure wave method and pipeline model method have appeared to locate the leakage point of the pipeline. However, among these methods, some methods are simple, convenient and practical, but the positioning accuracy is poor ; while other methods are more accurate in positioning accuracy, but the method is complicated and needs to consider many factors

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