Industrial Steam Boiler Of The Study And Implementation Of Automated Control

Air pollution and energy shortages have become common in the world today is facing two major problems. With the rapid development of China's industrial and domestic energy shortages and worsening air pollution, industrial production in the various segments of resolving these two issues, China has become the strategy of sustainable development is an important component. Industrial boilers in Chinese industrial production and central heating important energy conversion device. Industrial boilers huge energy consumption, Chinese output of raw coal accounts for about one-third. However, the current operation of the majority of boiler control system automation level is not high, low security, efficiency generally lower than the national standard. Operation level uneven workers, the lower the level of production management, so that the long-term boiler at the high-energy consumption, serious pollution of the state of production. In this paper, 35T/h industrial boiler, a set of PLC control system of PC programs.This paper factory 35T/h boiler of the PLC control system in the background, theory and practice, detailed set of PLC technology, frequency converter technology, communication technology as one of the advanced control technology in the boiler control system. In this system, the application of Siemens's S7-300 series PLC, and its programming software design Step7 boiler control of the ladder and communication networks, the realization of the boiler water level in three impulse control, automatic combustion, steam Automatic pressure and other functions; At the same time, Siemens's PC software WinCC and friendly man-machine interface, the important data automatically to preserve the boiler running, according to the needs automatically and statements and print.Boiler water level in the boiler is to ensure the safe operation of the control of an important target. Boiler control the water level change because of their distinctive characteristics and features. Boiler water level control in the area of control has been a typical problem. Traditional PID control and poor adaptive fuzzy PID control theory applied to control system design, the system does not need major changes to the model, will be able to better control the effects. As a result, this article uses adaptive fuzzy PID theory drum level controller design. A more detailed analysis of the water level of dynamic properties of objects and traditional technologies control, and fuzzy control theory, focuses on the three-impulse control law. On this basis, put forward the theory of fuzzy-PID to the realization of drum water level control of the program, and the system software and hardware design. The results show that the system can eliminate the disturbance of the basic level, at the same time increased the yield and quality of steam, saving on production costs, enhance economic efficiency are of great significance.