A method for overhaul repairs of trunk pipelines using composite piping

Introduction. The paper discusses the development of economically feasible and efficient overhaul methods for trunk pipelines using composite materials that can be carried out without shutdown.

Methods. Full-scale experiments were carried out to achieve this goal. To determine the optimal structural composition of the repair assembly from composite materials, the algorithm of the SOLIDWORKS software was applied. Experimental and modeling results were further compared.

Results. A comparative analysis of the results obtained in the experiments and modeling of overhaul repair process of trunk pipelines using SOLIDWORKS software showed their good agreement. Based on the modeling results, the dependence of the stress-strain state at the assembly on the number of composite material layers was established. The obtained dependence allowed such parameters of the trunk pipeline overhaul process, as geometric dimensions of defects, the type of composite material, and the quantitative composition of a composite assembly, to be modeled.

Conclusions. The obtained research results on the development of overhaul process of trunk pipelines using composite materials proved highly reliable, hence recommended for industrial application. The proposed method of modeling the overhaul process of trunk pipelines using SOLIDWORKS software significantly reduces the complexity and duration of determining the optimal quantitative composition of the composite assembly for repairing pipelines based on the operating parameters of structures and the geometric dimensions of defects.

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