船用蒸汽冷却器建模与仿真

摘要

Marine steam cooler is an important equipment of steam power plant using once-through boiler. It can provide safety for steam power plant in the condition of start-stop and low-powerd. According to modeling application of steam cooler control system, a simplified mathematical model of steam cooler is introduced. It provides a simulation test object of steam cooler control system design. The simulation program is developed using VC++6.0, and the mathematical model is resolved by Runge-Kutta method. The mathematical model is verified preliminarily by the simulation test and analyses in theory. Simulation results show that this model can describe the characteristics of steam cooler correctly, and have a definite application value.%船用蒸汽冷却器是直流锅炉蒸汽动力装置的重要设备.在启停与低功率运行工况下能保证蒸汽动力装置的安全.针对船用蒸汽冷却器控制系统的建模应用,介绍了1种简化的蒸汽冷却器数学模型,为蒸汽冷却器控制系统的设计提供了仿真验证对象.采用VC++6.0编制了仿真程序,利用龙格库塔法对数学模型进行解算.对数学模型进行仿真试验和理论分析,初步证实了模型的正确性.仿真结果表明,该模型能正确描述蒸汽冷却器的特性,具有一定的应用价值.