高速混床双层多孔板式布水装置的研制  

Research on Water Distribution Device with Double Layer Multiple-Perforated Plates in High-flowrate Mixed Bed Polisher

作　　者：田文华[1] 祝晓亮[1] 雷俊茹[1] 徐光华 刘屹然[1] TIAN Wenhua;ZHU Xiaoliang;LEI Junru;XU Guanghua;LIU Yiran(Xi＇an Thermal Power Research Institute Co.,Ltd.,Xi＇an 710054,China;Hubei Huadian Xisaishan Power Generation Co.,Ltd.,Huangshi 435001,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054 [2]湖北华电西塞山发电有限公司,湖北黄石435001

出　　处：《中国电力》2018年第11期26-31,共6页Electric Power

摘　　要：现有凝结水精处理系统高速混床穹形挡板加多孔板拧水帽式布水装置常出现偏流,使高速混床周期制水量远低于设计要求。分析产生问题的原因为设备本身结构不当引发多孔板变形或损坏所致。为此,研究并提出采用穹形挡板加双层多孔板式布水装置的设计方案,利用流体力学计算机模拟技术优化了双层多孔板的设计参数,并将优化设计方案应用于某680 MW超超临界机组的高速混床布水装置的技改工程中。3个月的运行效果表明,双层多孔板式布水装置运行阻力小,布水均匀,且高速混床出水水质稳定。改造后的高速混床周期制水量由原来的6.6万m^3增加到10.9万m^3,节水减排效果十分显著。The water distribution device with vaulted baffle-perforated plates and strainers always introduces bias flowin high-flowrate mixed bed （HFMB） polisher. This paper analyzes the issue and figures out the root cause as the deformand damage of the perforated plates. Then the design scheme of water distribution device with vaulted baffle–doubleperforated plates is proposed, in which the design parameters are optimized through computer simulation technology of fluidmechanics. The new scheme has been applied in technical renovation engineering project of water distribution device in HFMBpolisher of a 680 MW ultra-supercritical unit. The result after three months of operation shows that by applying this waterdistribution device with double perforated plates there were very little differential pressure during operation while the waterdistribution is uniform with stable water quality in HFMB polisher. The volume of periodic water production has increased from66,000 m^3 to 109,000 m^3, which is of great significance for water saving and emission reduction.

关 键 词：高速混床 布水装置 双层多孔板 周期制水量 流体力学 计算机模拟 

分 类 号：TM621.8[电气工程—电力系统及自动化] TP31[自动化与计算机技术—计算机软件与理论]