摘要
介绍了超临界间接空冷机组乏汽外引高背压供热系统的改造方式及原理,针对改造后系统运行调整中遇到的给水泵汽轮机排汽温度高超限及给水泵汽轮机出力不足、综合阀位高超限等问题,给出了相应的解决办法。并对系统改造后机组的供热能力进行了分析,认为改造后机组的供热能力大幅提高,电负荷工况为250~280 MW时机组的供热能力较强。
This paper introduces the transformation mode and principle of high back pressure heat supply system with exhaust steam from supercritical indirect air cooled unit,and puts forward corresponding solutions to the problems encountered in the operation and adjustment of the system after transformation,such as high exhaust temperature of feed pump turbine,insufficient output of feed pump turbine,high over limit of comprehensive valve position,etc.The heating capacity of the unit after the system transformation is analyzed.It is considered that the heating capacity of the unit is stronger when the electric load condition is in the range of 250 MW to 280 MW after the transformation,and the heating capacity of the unit is greatly improved.
作者
俎海东
魏超
焦晓峰
ZU Haidong;WEI Chao;JIAO Xiaofeng(Inner Mongolia Power Research Institute,Hohhot 010020,China)
出处
《内蒙古电力技术》
2021年第4期78-81,共4页
Inner Mongolia Electric Power
基金
内蒙古电力科学研究院科技项目“汽轮机故障分析研究及辅助决策系统研发”(ZC-2021-09)。
关键词
超临界机组
间接空冷
乏汽外引
高背压供热
综合阀位
supercritical unit
indirect air cooled
exhaust steam elicatation
high back pressure heating
comprehensive valve position
