Pipeline safety pre-warning and leakage monitoring alarm method

Abstract

The invention discloses a pipeline safety pre-warning and leakage monitoring alarm method. The alarm method can carry out pre-warning timely in the cases of external pipeline damaging events, external pipeline corrosion, internal corrosion, local stray current corrosion, anticorrosive coating strip-off corrosion and pipe stock mechanical abrasion reduction. Once a sudden event changes too fast, pre-warning is not carried out in time, and thus pipeline leakage is caused, the alarm method also can discover the situation and send an alarm, as core algorithm software runs in an upper host and a lower host and is used for processing real-time and static data, the pipeline safety pre-warning and leakage alarm are realized. The core algorithms include data acquisition requirements, an exception identifier, a simple equivalent circuit analytical method, a pipeline external damage and corrosion pre-warning positioning method, a pipeline internal corrosion pre-warning and positioning method, a local stray current corrosion pre-warning and positioning method, a pipe stock mechanical abrasion reduction pre-warning and positioning method, and a pipeline leakage monitoring alarm positioning method, the methods are realized by using the exception identifier.

Description

Technical field: [0001] The invention belongs to the technical field of pipeline safety, and in particular relates to a monitoring method which has the functions of pipeline safety early warning and leakage monitoring and surpasses the combined functions of the existing two systems. Background technique: [0002] There are more than 2.3 million kilometers of pipelines in use in the world, and my country’s oil and gas pipelines have also exceeded 100,000 kilometers. There are more and more pipeline safety accidents. All countries in the world are paying attention to pipeline safety, although various pipeline leakage monitoring has appeared Various pipeline corrosion prediction technologies have emerged, and pipeline safety early warning technologies to prevent artificial damage have emerged. However, these technologies are still far from the actual needs. There are many alarms and manual identification and positioning; cathodic protection monitoring data is scarce, and the deta...

AI Technical Summary

Problems solved by technology

[0002] There are more than 2.3 million kilometers of pipelines in use in the world, and my country’s oil and gas pipelines have also exceeded 100,000 kilometers. There are more and more pipeline safety accidents. All countries in the world are paying attention to pipeline safety, although various pipeline leakage monitoring has appeared Various pipeline corrosion prediction technologies have emerged, and pipeline safety early warning technologies to prevent artificial damage have emerged. However, these technologies are still far from the actual needs. There are many alarms and manual identification and positioning; cathodic protection monitoring data is scarce, and the details of pipeline anticorrosion cannot be known exactly, which leads to sometimes the cathodic protection data looks good and the corrosion is serious. The corrosion early warning technology is only effective for the external corrosion of the pipeline part. It does not meet the requirements of real-time monitoring and early warning, and has no early warning function for local stray current corrosion, edge corrosion, interlayer corrosion, internal corrosion and pipe wall thinning, and cannot respond to real-time pipeline hazard events; The pipeline safety early warning technology to prevent artificial damage cannot recognize the difference between ordinary spray and pipeline hazard spray. If there is spray, it will call the police. Therefore, this type of early warning equipment is not very practical.

[0003] Faced with the embarrassing situation that the service period of the pipeline is getting longer and the safety is deteriorating, people expect: there is a kind of equipment that can report to the police in time no matter what hidden dangers occur in the pipeline, so as to prevent the occurrence of accidents. Even if an accident causes a pipeline leak, the police can be called in time. However, such equipment does not exist at all, and the existing technology is far away from this goal.

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