Pipeline leakage location calculation method based on pressure difference

Abstract

The invention discloses a pipeline leakage location calculation method based on pressure difference. The calculation method comprises the following steps: establishing a pipeline leakage model; calculating an equation of negative pressure wave edge pipe attenuation; and finally, deducing the relationship between the pipeline leakage position and the pressure changes before and after pipeline leakage. In a simulation experiment, a negative pressure wave time-domain curve model is established for the first time according to fluid dynamics, the model is capable of simulating an actual pipeline, and dividing the negative pressure wave into three parts, namely respectively a steady state before leakage, an unsteady state during leakage and a steady state after leakage. An ANPW positioning algorithm and the traditional positioning algorithm can be compared by virtue of negative pressure wave simulated analysis, and the advantages of the ANPW positioning algorithm are obtained.

Description

technical field [0001] The invention relates to the field of pipeline transportation, in particular to a calculation method for pipeline leakage location based on pressure difference. Background technique [0002] In water resource transportation, pipeline transportation is the most convenient and economical transportation method. With the rapid development of water supply pipeline transportation, pipeline leakage is one of the most important problems in the safety of water supply pipeline transportation. The main reasons for its occurrence include pipeline aging, pipeline corrosion and man-made damage. Pipeline leakage will cause a series of problems, such as property damage, environmental damage and even endanger the safety of citizens. Therefore, it is necessary for us to pay more attention to pipeline leakage, increase its research efforts, improve the leakage detection and location technology of the water supply network, be able to detect leakage in time and accurately...

AI Technical Summary

Problems solved by technology

In industrial production, if the sampling rate is too high, it will greatly waste resources and violate the principle of low power consumption.

In addition, the speed of the negative pressure wave in the iron pipeline is

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