Pipeline leakage positioning method based on fuzzy reasoning

Abstract

The invention provides a pipeline leakage positioning method based on fuzzy reasoning. The method comprises collecting pressure signals and temperature signals of the head end and the tail end of a pipe line in real time; calculating time difference of pressure jump signals reaching the tail end and the head end of the pipeline if the pipeline has a leak point since the pressure jump signals caused by non-condition adjustment exist among the pressure signals of the two ends of the pipeline collected in real time; obtaining the distance between the pipeline leak point to the head end of the pipeline by utilizing a suction wave method, a generalized recurrent neural network positioning method and a temperature gradient method; positioning the leak point by utilizing a fuzzy reasoning algorithm and utilizing the distance between the pipeline leak point and the head end of the pipeline obtained by utilizing the suction wave method, the generalized recurrent neural network positioning method and the temperature gradient method. The three different positioning methods are adopted for positioning the pipeline leak point and different confidential coefficients are given for the three positioning results through fuzzy reasoning and parameter adaptive optimization of a subordinating degree function of a fish swarm algorithm, so that precise positioning of the leak point is realized.

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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