极寒地区600MW超临界直接空冷机组供热改造  

Heating Transformation of 600MW Supercritical Direct Air Cooling Unit in Arctic Region

作　　者：王鹏 

机构地区：[1]内蒙古国华呼伦贝尔发电有限公司,内蒙古呼伦贝尔021025

出　　处：《内蒙古电力技术》2015年第4期39-42,共4页Inner Mongolia Electric Power

摘　　要：内蒙古国华呼伦贝尔发电有限公司对2台600 MW机组实施了极寒地区超临界直接空冷机组供热改造,通过在汽轮机中压缸排汽管道上打孔引出采暖蒸汽。对机组供热改造后易出现的空冷岛防冻、凝汽器真空下降及凝结水溶氧超标等关键问题进行了分析,并给出了相应的解决办法。机组供热改造后,已经历2个供热周期的运行考验,未发生过影响机组及供热系统安全的事件,改造工作取得成功。2 sets of 600 MW supercritical direct air cooling units took heatingtransformation on the extremely cold area in Inner Mongolia Guohua Hulun Buir PowerGeneration Co.,Ltd.,by perforating hole on exhaust steam pipe of the IP cylinder for leadsto the heating steam.Analyzed the problems after the heating renovation,such as the aircooled island antifreeze,condenser vacuum leakage and condensation water dissolvedoxygen,and gave the corresponding solutions.After the transformation of the heating unit,through the operation of 2 heating cycles,the events did not occurred impacting on theunits and heating systems,reconstruction succeeded.

关 键 词：极寒地区 600 MW超临界直接空冷机组 供热改造 空冷岛防冻 真空严密性 凝结水溶氧超标 

分 类 号：TK264.11[动力工程及工程热物理—动力机械及工程]