PIPELINE TECHNICAL CONDITION EVALUATION METHOD Russian patent published in 2024 - IPC F16L58/00 G01N3/60 G01N11/04 

FIELD: hydraulics; measurement.

SUBSTANCE: invention relates to the field of hydraulics and diagnostics of pipelines, and namely to methods of technical condition evaluation of pressure metal (from steel and grey cast iron) pipelines of cold water supply, including pipelines of drinking water. Method includes determining quantitative value of criterion of damage of pipeline used to assess its technical condition, comparison of the obtained quantitative value of the pipeline damage criterion with its basic value selected as a base for comparison, and evaluation of the technical state of the pipeline on the basis of the above comparison. As a criterion for assessing the technical state of the pipeline, the coefficient of hydraulic efficiency of its operation is used, which takes into account the change in the hydraulic characteristics of the pipeline depending on the actual thickness of the layer of internal deposits in it, wherein pipeline characteristics are measured, including thickness of layer of internal deposits in pipeline and actual flow rate in it, quantitative value of said criterion is determined taking into account measured characteristics of the pipeline by formula. Comparing the obtained calculated quantitative value of said criterion K_eff with its basic value K_{eff basis}, the value of which is selected K_{eff basis}=0.95, and based on the results of said comparison, evaluating the technical condition of the pipeline, which characterizes the possibility of its functioning, wherein in case when K_eff≥0.95, technical condition of the pipeline is assessed as serviceable, and in the case when K_eff<0.95, the technical state of the pipeline is assessed as critical, requiring measures to prevent further formation of internal deposits in the pipeline to ensure its operability.

EFFECT: increased accuracy of pipeline technical state estimation and possibility of its further operation.

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