| The cathodic protection monitor of oil and gas station, cathodic protection on-line monitoring technology is developed, and has been successfully applied in oil and gas station. The system was operating outside the station and tests the CP data automatically. Cathodic protection potential data is sent to management personnel regularly via the internet, the problem of cathodic protection system can be find as soon as possible. It can ensure the effectiveness of cathodic protection system and improve the station cathodic protection effect.According to the characteristics of cathodic protection potential sensor, It uses the electrical isolation, signal isolation, active filter and voltage follow technology, and devolepes the cathodic protection potential detection principle and detection circuit of the cable long distance transmission, and develops an 11 channels of cathodic protection potential receivers, realizes the potential receiver placed outside the station and multi-point detection of centralized management requirements.According to the basic principle of cathodic protection, the theory mode of cathodic protection potential scope is established of, the theory of cathodic protection potential scope of gas station is determined through the method of instantaneous interruption, and the software is devoleped to test and eavaluat the effectiveness of the cathodic protection system, It is applied to the gas station for the establishment of the cathodic protection criterion.The cathodic protection monitoring system is composed of copper-copper sulfate reference electrode, test leads, test instruments, A/D conversion module, RS232 communication module and computer. 11 test points on the station was determined. Since it running, the system getting the CP data form the 11 points continuously, the research gets its goal on the desired technology development. |
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