600MW机组高压加热器疏水调整阀堵塞原因分析及处理  

Analysis and Treatment of Drain Valve Blocked on High Pressure Heater in 600MW Unit

作　　者：王宏丹 贾志军 赵广毅 

机构地区：[1]内蒙古京宁热电有限责任公司,内蒙古乌兰察布012000 [2]内蒙古京隆发电有限责任公司,内蒙古乌兰察布012100

出　　处：《内蒙古电力技术》2017年第1期61-65,共5页Inner Mongolia Electric Power

摘　　要：内蒙古京隆发电有限责任公司600MW机组高压加热器疏水调整阀阀笼堵塞,堵塞物的主要成分为四氧化三铁。对凝结水精处理装置过滤器滤元、真空系统、除氧器、疏水调整阀阀笼等逐一进行排查,确定精处理装置过滤器滤元失效泄漏、除氧器脱氧不利是四氧化三铁生成的主要原因,而疏水调整阀阀笼节流孔过小是造成四氧化三铁沉积的主要原因。对以上问题进行处理后,高压加热器疏水调整阀阀笼堵塞问题得到解决。The drain valve blocked on the high pressure heater, and the main obstruction was ferroferric oxide in Inner Mongolia Jinglong Power Generation Co.,Ltd.,Checked filtration cell of fine treatment, vacuum system, deaerator and drain valve, diagnosed the trouble caused ferroferric oxide generated was filtration cell failured. Oxygen in the high pressure header exceed standard and the aperture size of valve cage in drain valve was too small to make the ferroferric oxide deposited. Thus the author adopted the relative methods to solve the problem.

关 键 词：高压加热器 疏水调整阀 阀笼 堵塞 节流孔 给水溶氧量 过滤器滤元 

分 类 号：TM621.7[电气工程—电力系统及自动化]