Method for monitoring leakage and positioning pipeline through straining loop sensor array

Abstract

The invention provides a method for monitoring leakage and positioning a pipeline through a straining loop sensor array, and belongs to the technical field of monitoring of pipelines. The method is characterized by comprising the steps of monitoring leakage through a negative pressure wave time interval signal generated by the straining loop sensor array during measuring leakage; measuring time difference of a negative wave signal and a geometric distance equitation set of a straining loop sensor through the straining loop sensor array; removing negative pressure wave speed which is an unknown value; solving the position of a leakage point; reducing the positioning error by the method of averaging a plurality of leakage point positions. The method has the effects and benefits that the shortage that the negative pressure wave speed is utilized for calculating and positioning in the traditional negative pressure wave positioning method, which causes low leakage positioning precision is solved; the reliability is high, the pipeline structure is free of damage, and the leakage can be monitored on real time.

Description

technical field [0001] The invention belongs to the technical field of pipeline monitoring, and relates to a pipeline leakage monitoring and positioning method, in particular to a pipeline leakage monitoring and positioning method using a strain hoop sensor array. Background technique [0002] During the operation of oil and gas pipelines, due to their own damage and the destructive effects of some external forces, leakage accidents will inevitably occur. Once a leakage occurs, it will not only generate a huge waste of resources, but also cause pollution to the environment. Therefore, the pipeline The monitoring and location of leaks is particularly important. [0003] When a pipeline leaks, there is an immediate material loss in the leaking part, which causes the fluid density at the leak location to decrease and the pressure to drop. The fluid fills the leakage area, which in turn causes the density and pressure of the area adjacent to the leakage area to decrease. This p...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for monitoring and locating pipeline leakage through a strain hoop sensor array, which solves the shortcomings of the traditional method of monitoring and locating pipeline leakage by measuring negative pressure waves with pressure sensors

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