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For domestic carbon fiber pre-oxidation characteristics and the development of equipment status, this paper has developed a new design of PAN-based carbon fiber pre-oxidation equipment to solve the current conventional pre-oxidation process in carbon fiber production process takes a long time, energy consumption, control many parameters and the precision is not high phenomenon. The first article focuses on carbon fiber pre-oxidation process of the main features, and according to its characteristics put forward the corresponding new PAN-based carbon fiber pre-oxidation equipment designed for general requirements, and then focuses on the pre-oxidation furnace chamber, furnace mouth sealing, heating systems, Hot air circulation system, the draft drive system for a detailed design and calculation. According to the design of pre-oxidation furnace and the calculated control points, the paper finished carbon fiber production line control system hardware design, including system hardware overall program design, build, control cabinet main logic architecture; control cabinet design, low-voltage power supply cabinet design, fans and pull stretching frequency component selection and electrical control cabinet schematic design; PLC selection, I / O module selection, hardware configuration, address allocation, communication structure selection and communication parameter setting and other control system hardware core design. By proposing carbon fiber production line control system software design requirements, using the Siemens STEP 7 PLC program were structured programming, HMI using WinCC procedures for the overall design and the preparation of the program. The entire system software friendly interface, real-time communication and high anti-interference ability, control precision, easy follow-up project to expand and upgrade equipment maintenance. For carbon fiber production line energy consumption are analyzed, designed and developed a set of pre-oxidation equipment temperature control expert system, focusing on the design of the expert system knowledge base and inference engine, and conducted simulation. In this under the guidance of expert systems, and pre-oxidation equipment in actual field application situation described analysis. Operation show that the pre-oxidation equipment and its control system design complete, high precision control, temperature field uniformity, fully functional, running smoothly, meet the design requirements. Prepared for the pre-production line oxygen and carbon fiber filaments were characterized, the data indicate pre oxygen and carbon fiber filaments excellent performance to prove that the pre-oxidation equipment and its control system design is reasonable, prepared to meet the high-performance carbon fiber production and energy saving requirements.
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