| Titanium as a new industrial materials, in the military, aerospace, marine industry,chemical industry, oil refining, automotive, medical, sports and daily necessities, buildingmaterials, nuclear industry and other fields have a wide application. With the growth ofnational economy in recent years, demand for titanium is also expanding. China’s titaniumproduction is less, most dependent on imports. At present, china titanium slag production islow, serious pollution, technological backwardness, except for a few new furnace, the other isbasically a technical level the seventies and eighties. As the titanium slag furnace technologyis closely related to its military, its smelting technology to master only a few developedcountries and not to transfer abroad. Therefore, we must accelerate the development of china’stitanium industrial, especially production equipment, technology, refining technology. For thetitanium industry to provide more high-quality raw materials to meet the needs of nationaleconomic development.The thesis is based on the30MVA titanium slag electric arc furnace computer controlsystem of the Sichuan Panzhihua Jinjiang Titanium. The summaries of the historic, presentstate and perspective trend of control techniques of titanium slag electric arc furnace are basedon consulting a great deal of documentation. According to the smelting process and thesituation at the scene, combined with current automation and control technology, the system’ssolving scheme is presented. The use of distributed control system as the overall systemcontrol program, and systematic study of the distributed control system in the process ofsmelting furnace application.Distributed control system is based on fieldbus communication protocol for industrialEthernet and profibus network. Central control room monitoring systems via Ethernet tocommunicate with senior management computer and on-site control station, remote I/Ocontrollers and field controllers via profibus communication, and ultimately communicatewith the central control room. The central control room can read the on-site control station inthe operational status of equipment and data, while the operational status of field devices toadjust, data storage and alarm display.Distributed control system used Siemens PLC as field control devices. According to thesmelting furnace process, specific equipment and field of sensor for PLC hardware selection,and preparation of the electrode and the furnace body control of the PLC control program, andin accordance with titanium slag smelting furnace process control system requirements for thedesign of practical control of electrode regulator algorithm and its implementation, theapplication of the Siemens programming software Setp7write electrode conditioning controlunit, batching control unit, hydraulic control unit, he vacuum switch control unit, tansformer voltage control unit and other logic control unit PLC control program.Monitoring system using Kingview configuration software for the entire productionprocess monitoring, data acquisition, parameter adjustment, real-time control, alarm function,data logging, report printing, trends, and security operations to be configured design, designof the Electric arc furnace system screen, environmental protection dust removal systemscreen, the electrode system screen, hydraulic system screen, Water cooling system screen,alarm screen, reports screen and so on. Through the monitoring system KingView networkconfiguration, drive connection setup and web publishing to achieve central monitoring andremote monitoring capabilities. |
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