CHEN Xiuping, HUANG Weigang. CLOSED-LOOP CONTROL SYSTEM OF CFB BOILERS[J]. Thermal power generation, 2004, (6): 57-59.
DOI:
CHEN Xiuping, HUANG Weigang. CLOSED-LOOP CONTROL SYSTEM OF CFB BOILERS[J]. Thermal power generation, 2004, (6): 57-59. DOI: 10.19666/j.rlfd.2004.06.016.
CLOSED-LOOP CONTROL SYSTEM OF CFB BOILERS
摘要
对大柳塔热电厂循环流化床锅炉模拟量控制系统控制回路的应用及存在问题进行了分析
重点介绍给水控制回路和主蒸汽温度控制回路的结构及其修改情况。经调试
在主蒸汽流量大于 5 0 %
减温水阀门开度大于 6 0 %的工况下
主蒸汽温度控制回路能够投入自动运行 ;在锅炉负荷比较稳定时
可保持主蒸汽温度在设定值± 5℃范围内
Abstract
The situation and problems existing in control circuits of analog variable control system for circulating fluidized bed (CFB) boilers in Daliuta Thermal Power Plant have been analysed
emphatically describing the structure of control circuits for the feedwater and the main steam temperature
as well as the situation of their improvement. Through debugging
the control circuit of main steam temperature can be put into automatic operation under operation condition of main steam flow quantity to be greater than 50%
and opening degree of the desuperheating water valve to be greater than 60%. During the time of comparatively stable boiler load
the main steam temperature can be maintained in the range ±5℃ of the set value.