Distributed real-time health monitoring system and method for pipeline structures

Abstract

The invention discloses a distributed real-time health monitoring system for pipeline structures. The distributed real-time health monitoring system mainly comprises a monitoring terminal and piezoresistive chip sensors attached to structural key points in a plurality of structural key areas on a continuous pipe section, and further comprises a plurality of environment parameter sensors arranged in each structural key area or in the environment where the structural key areas are located. According to the system, a continuous distributed sensor monitoring network is formed; the characteristic that the piezoresistive chip sensors directly respond to stress and strain of the pipeline structures is utilized, and for the pipeline structures of different positions and different shapes, specificattaching and monitoring modes are adopted, so that the stress and strain of the pipeline structures are monitored; in addition, large strain of the pipeline structures due to external influence or sudden change of pressure in pipes can be directly reflected as instantaneous large increment of resistivity of the sensors and can be monitored in real time; and finally, through combination of the monitored environment parameters, real-time health monitoring of the long-distance continuous pipe section is achieved, and a potential safety hazard alarm can be given in time.

Description

technical field [0001] The present disclosure relates to the technical field of pipeline monitoring, in particular to a distributed real-time health monitoring system and method for pipeline structures. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] Pipelines (also known as pipelines, pipelines) are one of the main transportation tools for oil, natural gas, and chemical liquids / gases, and are widely used in the petrochemical industry. Pipes are usually composed of steel pipes, alloy pipes and plastic composite pipes. Although the pipeline has a large transportation volume, good sealing performance and low cost, as the service period of the pipeline goes on, under the influence of natural aging, external environment and corrosion of the conveying medium, the structure and function of the pipeline material will degrade. It is easy to ca...

AI Technical Summary

Problems solved by technology

Therefore, checking the potential safety hazards of long-distance pipelines poses a great challenge to the existing pipeline maintenance work based on manual inspections

[0004] The inventors of the present disclosure have found that the existing pipeline monitoring methods are divided into two types, the first is the sampling detection method, that is, the method of regular inspection by manual or mobile detection instruments; the second is the method of using various There are two kinds of sensors for real-time monitoring, that is, to monitor the air leakage or oil leakage of the pipeline or the surrounding environment of the pipeline by arranging various sensors; It can only realize the post-failure detection of the pipeline structure, and cannot realize the effective pre-failure detection; moreover, the existing oil and air leakage sensors have low applicability, difficult construction and high monitoring cost for pipelines buried underground or located in plateau areas ; At the same time, the existing methods cannot realize the adaptive monitoring of different structural parts in the pipeline, such as continuous pipe sections, bent pipe sections or T-shaped pipe sections, that is, the existing monitoring methods cannot achieve the best monitoring effect

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