100 MW双抽凝汽式汽轮机的通流改造实践  

The Flow Modification Practice of 100 MW DoubleExtraction Condensing Steam Turbine

作　　者：宋晓倩 徐俊 卢艳双 Song Xiaoqian;Xu Jun;Lu Yanshuang(SINOPEC Shanghai Petrochemical Co.,Ltd.,Shanghai 200540)

机构地区：[1]中国石化上海石油化工股份有限公司,上海200540

出　　处：《石油化工技术与经济》2023年第2期26-29,共4页Technology & Economics in Petrochemicals

摘　　要：某石化企业自备电厂100 MW双抽凝汽式汽轮机由于机型设计年代较早,采用的通流和结构设计已明显落后,安全结构存在隐患,还存在运行经济性能差等问题。为落实国家及上海市对燃煤电厂超低排放及节能改造的要求,保证汽轮机组安全、可靠、经济运行,采用新的汽轮机技术对机组实施通流改造。文章介绍了通流改造的原则、内容及成效,对改造后的机组进行了性能试验,缸效率提高5%,热耗率明显降低,煤耗率下降10%,达到先进企业同类型机组煤耗水平,改造效果显著。Due to the early design age of the 100 MW double extraction condensing-steam turbine in a petrochemical enterprise’s own power plant,the flow design and structure design have been obviously backward,and there are problems such as poor economic performance and hidden structural safety.In order to fulfill the national and Shanghai municipal requirements for ultra-low emission and energy saving transformation of coal-fired power plants,and ensure the safe,reliable and economical operation of steam turbine units,new turbine technology is adopted to carry out the flow transformation of the units.The principle,content and effect of the flow modification are introduced in this paper.The performance test of the modified unit is carried out.The cylinder efficiency is increased by 5%,the heat consumption rate is reduced significantly,and the coal consumption rate is reduced by 10%,reaching the coal consumption level of the same type units in advanced enterprises,and the transformation effect is remarkable.

关 键 词：通流设计 节能 缸效率 热耗率 煤耗率 

分 类 号：TK268[动力工程及工程热物理—动力机械及工程]