Pipeline leakage detection method based on pipeline pressure data

Abstract

The invention provides a pipeline leakage detection method based on pipeline pressure data. According to the method, firstly, the resistance factor of each part of pipeline is calculated according to the pipeline pipe diameter, the roughness degree, the medium density and the local resistance of parts such as elbows in the pipeline; then, the pressure drop of each part is worked out according to the initial flow rate, and the pressure value of each detection point is calculated through being combined with the pressure of the initial end; finally, a theoretical value is subjected to comparison analysis with the actual measured value, so that the pipeline leakage condition is obtained, and the position of a leakage point is positioned. The method provided by the invention has the advantages that the factors, such as the pipe diameter, the roughness degree and the local resistance of various components, for reflecting the concrete conditions of the pipeline in the whole pipeline are fully considered, whether the existing pipeline leaks or not can be effectively judged, and the prediction precision is higher.

Description

technical field [0001] The invention relates to a pipeline leakage detection method, in particular to a pipeline leakage detection method based on pipeline pressure data. Background technique [0002] Preventing pipeline production accidents is a very important task in pipeline safety management. With the rapid development of pipeline construction in various countries in the world, pipeline accidents also occur frequently. Once a pipeline leakage accident occurs, it will not only cause a large amount of property loss, but also cause environmental pollution and waste of resources. cause personal injury. [0003] In order to effectively prevent pipeline accidents, pipeline leakage detection technology has been developed rapidly. For this reason, a lot of research has been done at home and abroad. In recent years, with the development of computer technology, pipeline leakage detection technology is developing towards the combination of software and hardware. At present, vario...

AI Technical Summary

Problems solved by technology

However, these two methods do not model and analyze the pressure of the entire pipeline, which leads to a certain deviation in the results of pipeline leak detection. If the pressure conditions at different positions of the entire pipeline can be analyzed, the detection accuracy will be reduced. will greatly improve

[0005] Because it is difficult to obtain the pressure data of all sections of the entire pipeline, especially in the pipeline sections that cannot be approached, it is almost impossible to obtain pressure data. In the absence of pressure data of the entire pipeline section, the existing methods for pipeline leak detection based on pressure data are It is estimated based on very few pressure sampling points, which leads to unsatisfactory detection results

In recent years, with the development of detection technology, there have been some methods to obtain the pressure data of the entire pipeline, but no method for leak detection based on the pressure data of the entire pipeline has been proposed. Leak detection method based on pressure data

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