Recently, the HART intelligent instrument real-time management and diagnosis system jointly developed by Changzhou University and Yangzi Petrochemical has won the second prize of scientific and technological progress of China Petroleum and Chemical Automation Industry Association. The expert group identified that as the first independent domestic technology, the system is innovative and advanced; its actual operation results show that the main technical indicators have reached the level of similar foreign products, and the economic benefits are significant. At present, the system has been successfully applied in companies such as Yangzi Petrochemical and Anqing Petrochemical. HART is a communication protocol between the field smart meter and control room equipment introduced by ROSEMOUNT in 1985. It has become the industry standard for smart meters in the world. The smart meter based on HART protocol has also been used in petrochemical plants. Widely used in production control systems. However, due to the late start, the real-time management and diagnosis system technology of domestic HART smart meters has been monopolized by some foreign multinational companies, and the source code of the system is not opened to users, so that domestic users are not free to use and deep development, related Instrumentation equipment is all dependent on imports, so petrochemical companies need to pay more for procurement. Moreover, foreign systems are not targeted, and on-site installation, use, operation, and after-sales service are inconvenient, and service costs and diagnostic costs are high. To this end, since 2004, Changzhou University and Yangzi Petrochemical have jointly developed technology development, and have successively applied successfully in the 100,000-ton/year ethylene cracking furnace of the Yangzi Petrochemical Olefin Plant and the PTA line 1 and 2 of the chemical plant. “Firstly, it has realized intelligent inspection and intelligent monitoring, which reduces the risk of manual on-site inspections, especially the high point of the installation, the polluted places, and the places that cannot be reached manually. The diagnostic effect is faster and better, the accuracy of instrument fault diagnosis is more than 99%, and the accuracy of equipment alarm is over 99%; and the open source code is solved, which promotes the development of related industries in China.†R&D personnel Yangzi Petrochemical Olefin Factory Yang Jincheng, deputy chief engineer of the electric instrument, said that the system has online real-time calibration, online real-time diagnosis and online real-time monitoring functions for the field instruments being managed. The maintenance method of the field instruments has changed from the passive maintenance to the current expectation. Maintenance, so that the maintenance function of the field instrument is changed from the fault stop type to the expected diagnosis type, which reduces the failure rate of the instrument, improves the stability of the online instrument, and avoids the fluctuation or parking risk caused by the instrument failure, so that the Yangzi olefin plant The operating rate of the advanced control system on the ethylene cracking furnace has increased from 75% to over 95% now; Advanced control systems put into operation rate of chemical PTA line and two line increased from 74% to over 95% now; thousands of yuan each year for the enterprise economic benefits. The solution to the technical bottleneck of this project is a major breakthrough in the domestic industrial automation control field with independent intellectual property rights technology. It is of great significance for the construction of intelligent digital factories, with good promotion conditions and market prospects.
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