Research and Application of Online Corrosion Monitoring System for Gas Pipelines

The corrosion damage of natural gas pipelines will seriously reduce the structural strength, load-bearing capacity, and reliability of pipelines, shorten their service life, and increase operational risks. In response to the current situation of natural gas pipeline corrosion, conventional manual testing can no longer meet on-site needs. The current online monitoring technologies for natural gas pipelines have limitations, such as excavation and testing of the remaining wall thickness of natural gas pipelines, which will inevitably have a certain negative impact on the pipeline in addition to high costs. A natural gas pipeline corrosion online monitoring system has been developed, and the article introduces the composition of the online monitoring system Calculation and online monitoring steps for corrosion measurement. The corrosion data collector analyzes and processes the corrosion signals of natural gas pipelines, uploads them to the remote control center, and after processing by the monitoring system, obtains accurate corrosion data and calculates the corrosion situation, determines the corrosion status of natural gas pipelines, locates the anti-corrosion layer, evaluates the aging status of the corrosion layer, identifies the operating parameters of natural gas pipelines, guides the selection and use of corrosion inhibitors, and adjusts the injection of corrosion inhibitors, Guide the implementation plan of forced impressed current cathodic protection for natural gas pipelines, and conduct online parameter warning through remote monitoring of SCADA system. This system has the characteristics of fast, accurate, and highly automated detection of corrosion resistance, effectively controlling the corrosion of natural gas pipelines.