摘要
Abstract
During deep load regulation of coal fired units,the problems of leakage in the minimum flow recirculation regulating valve of feed pump and excessive flow of feed water recirculation often occur.For the domestic valve,a scheme of installing small bypass in the water supply recirculation system was put forward to carry out the"one machine,one policy"transformation from aspects of small bypass capacity configuration,valve structure optimization and bypass valve selection.After the transformation,the water supply recirculation flow under the same load was significantly reduced,the use frequency of the minimum flow recirculation regulator of feed pump was lessened,the energy loss of water supply system was lowered,the economy of the unit under low load was improved,and the maintenance cost of valve was decreased.The research results can provide technical support and scheme reference for the operation safety and economy of coal fired units during deep load regulation.关键词
深度调峰/给水泵再循环/最小流量再循环调节阀/精准配水Key words
deep load regulation/feed pump recirculation/minimum flow recirculation regulating valve/precise water distribution分类
能源科技
