Design and application of the Siemens programming software Step7, in the study of boiler drum water level control system principle and process on the basis of control scheme, the analysis and the establishment of I/O, and the program design. Application of simulation software for control of boiler water level simulation debugging, achieves the expected effect.
Boiler is one of the many industrial departments indispensable power equipment. Therefore, boiler water level control often became an integral part of many factories. Therefore, the boiler equipment automatic control system analysis is necessary. Boiler water level control system of boiler control system is the most important link in. On the production operation of the boiler if unreasonable, poor management, processing is undeserved, often cause accidents. Most of these incidents are due to improper control of boiler water level, visible in the boiler drum water level control device in the boiler control system importance.
In the boiler drum water level control system, water level is a very important control parameters, it indirectly reflects the boiler load and water balance. This design is the rational control of drum water level, the control scheme is based on Siemens SIMATIC S7-300series PLC three impulse regulating system, namely feedforward cascade control system. Thus can improve the boiler automation control level, maintain the drum water level in a given range, to ensure the safe operation of the boiler, reduce the labor intensity of workers, and achieved good economic and social benefits.
西门子电厂热工控制系统中的锅炉汽包水位控制系统原理。
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