摘要
在机理建模的过程中,引入信号流图的概念来描述被分析的系统,将系统中的各种设备和连接关系简化成节点和支路,建立节点和支路的算法描述.选取某130t/h的流化床锅炉为仿真对象,根据上述方法建立燃烧系统机理模型,并进行在线仿真.结果表明:一次风量的扰动对各个参数的影响趋势与流化床锅炉特性保持一致,该模型能够正确反映流化床锅炉风烟系统参数的变化趋势.
During mechanism modelling process,the concept of signal flow graph was introduced to describe the system to be analyzed,while relevant devices and connections in the system simplified into nodes and branches,and an algorithm description made with the nodes and branches.Taking a 130t/h fluidized bed boiler as an object of study,a mechanism model was built up for the air-flue gas system based on the proposed method,with which on-line simulations were performed.Results show that the effects of primary air flow disturbance on major parameters of the system agree well with actual characteristics of fluidizedbed boilers,indicating that the model can reflect the parameter variation trend of air-flue gas systems in fluidized-bed boilers.
出处
《动力工程学报》
CAS
CSCD
北大核心
2014年第7期524-528,共5页
Journal of Chinese Society of Power Engineering
基金
中央高校基本科研业务费专项资金资助项目(12ZP13)
关键词
流化床锅炉
风烟系统
机理模型
信号流图
节点
支路
fluidized-bed boiler
air-flue gas system
mechanism model
signal flow graph
node
branch
