Cdq Hoist Plc Based Control System Research And Design

Long-term iron and steel enterprises coking process technology using conventional coke wet quenching, energy consumption, heavy pollution, but also made a lot of heat carried by the red coke can not be used since Middle of last century, foreign began to use the technology of coke dry quenching to replace coke wet quenching. The technology will save energy, protect environment and improve the quality of coke .Developing coke dry quenching for the development of iron and steel enterprises, increase market competitiveness has a positive role in promoting its social and economic benefits.This paper analyzed the main processes of CDQ, and made the hoister control system design and research through the Siemens PLC hardware and software. The hardware design using local PLC and remote I/O station network structure, the photoelectric switch test the operation data of the hoister, according to the data, it finished the whole control process. Software design using modularization program design ideas, paper listed the procedure flow chart, the whole process will be divided into four modules, respectively is: single car operation, car automatic operation and the rope operation and central automatic operation .The program using ladder diagram and functional module chart combining PLC programming languages, and finally in debugging stage , it adopted simulation software simulation simulated the whole program, and verified the reliability of the program.The CDQ hoister control system has been successfully applied in the Hangzhou Iron and Steel Company. The performance show that the system meets the technical process of the CDQ hoister and production requirements, and the software system is stable and reliable. Improving the recycling of coke energy and the atmospheric environment plays an important role.