Pipeline monitoring method and system

Abstract

The invention provides a pipeline monitoring method and system. The pipeline monitoring method includes: outputting an alarm signal when monitoring pipeline settlement and / or pipeline sag; wherein, outputting an alarm signal when monitoring pipeline settlement is as follows: according to the flexural section modulus of the pipeline and the equivalent stress of the pipeline Calculate the allowable bending moment of the pipeline section; calculate the settlement deflection of the pipeline according to the allowable bending moment of the section; when the settlement deflection is greater than the preset deflection, output the pipeline settlement alarm signal; output the alarm signal when the pipeline sag is detected by the following method: according to Measure the circumferential stress or annular stress, the depth of the pipe sag and the plastic deformation stress of the pipe when the pipe is sag, and calculate the maximum depth of the pipe sag; The settlement and depression of the pipeline can be monitored to improve the safety of pipeline transportation.

Description

technical field [0001] The invention relates to the field of pipeline monitoring, in particular to a pipeline monitoring method and system. Background technique [0002] Compared with road transportation, railway transportation, waterway transportation, and air transportation, oil and gas pipelines have become the mainstay of oil and gas transportation due to their advantages such as low transportation cost, less loss, less permanent land occupation, fast construction speed, large transportation volume and high safety performance. means. However, some oil and gas buried pipelines are located in the soft ground zone, and the soft ground has poor bearing capacity for the pipeline. When the pipeline is disturbed by external force, it will cause the pipeline to settle unevenly, and even cause the pipeline to sag. At present, the staff cannot detect the settlement and depression of the pipeline in time, which reduces the safety of pipeline transportation. Contents of the inven...

AI Technical Summary

Problems solved by technology

However, some oil and gas buried pipelines are located in the soft ground zone, and the soft ground has poor bearing capacity for the pipeline. When the pipeline is disturbed by external forces, it will cause uneven settlement of the pipeline, and even cause the pipeline to sag.

At present, the staff cannot detect the settlement and depression of the pipeline in time, which reduces the safety of pipeline transportation

Images