直接空冷机组凝汽器管束表面温差产生原因分析与处理  

Cause Analysis and Treatment of Tubes Surface Temperature Difference on Direct Dry Cooling Unit Condenser

作　　者：王凯[1] 焦晓峰[2] 王志丽[3] 

机构地区：[1]内蒙古电力勘测设计院有限责任公司,呼和浩特010020 [2]内蒙古电力科学研究院,呼和浩特010020 [3]中国安全生产科学研究院,北京100029

出　　处：《内蒙古电力技术》2014年第6期71-74,共4页Inner Mongolia Electric Power

摘　　要：某电厂直接空冷机组凝汽器冬季运行时有多列冷却三角两侧管束的温差达20℃,常发生管束冻裂事故。分别从设计、安装、运行等方面分析了凝汽器管束表面产生温差的原因。经过多次现场运行调整操作和现场试验,确定温差的形成原因为安装工艺不当,因单侧抽真空管道坡度不合理造成其通流能力不足。通过调整管道安装坡度,最终解决了直接空冷机组凝汽器管束表面温差问题。The tubes surface temperature difference of derect dry cooling unit condenser reached to 20 ℃ in a power plant in winter operation, often occured bundles cracking accident, some common causes of condenser tube surface temperature difference were analyzed from installation, design, operation and other aspects. After several on-site operation adjustment and field tests, determined the temperature difference cause was the improper installation process, the unilateral vacuum pipe gradient was unreasonable. Through the improvement of pipeline installation slope, the direct air cooling unit condenser tube surface temperature difference problem was solved ultimately.

关 键 词：直接空冷机组凝汽器 表面温差 抽真空管道 冷却三角 冻结 

分 类 号：TK264.11[动力工程及工程热物理—动力机械及工程]