Intelligent remote monitoring method for protecting cathode of underground pipeline

Abstract

The invention discloses an intelligent remote monitoring method for protecting a cathode of an underground pipeline. According to the method, test piles and a potentiostat are used, the potentiostat is electrically connected with a steel pipeline to form a transmission channel for inputting electrical performance parameters (protective potential), and the test piles are arranged on the underground pipeline according to an appropriate separation distance on a pipeline required to be monitored according to a selected separation distance; a system for accurately positioning and timing the test piles and potentiostat is built through GPS (global positioning system) modules in the test piles and potentiostat by using a satellite system; an intelligent collection, processing and transmission system of real-time measured data and control data is built through a GPRS (general packet radio service) wireless network, a server and a monitoring host; a GPS is used for performing unified timing to simultaneously cut off the power supply and acquire potential values of all the test piles on the underground pipeline; the potential data of each test pile are acquired when the power supply is cut off for 0.05-0.3 second; and a monitoring center gives an instruction through a monitoring host system according to a display result of an obtained data set image curve to change a set protective potential value of the potentiostat, and transmits the change instruction to the potentiostat through a network to ensure that the underground pipeline achieves the best protected state.

Description

technical field [0001] The invention relates to an anti-corrosion technology, in particular to an intelligent remote monitoring and monitoring method for cathodic protection of underground pipelines by means of a GPRS network and a GPS timing and positioning system. Background technique [0002] Steel oil pipelines are essential container facilities for oil transportation in the petroleum and petrochemical industries. However, during operation, they are often corroded by internal and external environmental media, causing damage to underground metal pipes and burying various safety hazards. Cathodic protection technology is a technology to prevent or inhibit electrochemical corrosion of protected metal structures. By applying a certain cathodic current to the protected metal, the potential of the protected metal is negative to a certain potential value, and the anode reaction on it is suppressed, so that the corrosion of the metal is controlled. [0003] In pipeline corrosio...

AI Technical Summary

Problems solved by technology

However, the system still has the following problems: when the relevant data of pipeline cathodic protection is abnormal, it cannot remind the management personnel, and it cannot realize real-time monitoring and management of the protected facilities in the field and under harsh conditions; and the obtained management data is only the potentiostat Or the data of station equipment, generally there is no data of test piles, which cannot reflect the cathodic protection status of the entire pipeline

[0009] To sum up, it shows that although cathodic protection technology is adopted in domestic petrochemical underground pipelines, due to many imperfections in the technology itself, the owners of pipelines and storage tanks cannot know the real status of cathodic protection in time, and In management and actual operation, real-time monitoring and adjustment of the protection system in operation cannot be carried out, and there are great potential safety hazards

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