600MW火电机组用循环水泵改型设计  

Remodeling design on circulating pump of 600 MW power unit

作　　者：伍春花 管荣国[2] 

机构地区：[1]湖南湘电长沙水泵厂有限公司,湖南长沙410015 [2]江苏大学流体机械工程技术研究中心,江苏镇江212013

出　　处：《排灌机械》2008年第1期40-42,52,共4页Drainage and Irrigation Machinery

基　　金：江苏省科技攻关重大项目(BE2006084)

摘　　要：介绍了600 MW火电机组用大型立式循环水泵的一种改型设计方法,即针对同一模型,叶轮与导叶体采用不同的换算系数进行设计.以天津盘山电厂一期2×600 MW及成都金堂电厂一期2×600 MW循环水泵设计为例,分别采用常规设计和改型设计方法进行了设计.详细说明了设计方法、设计要点及理论和实测性能曲线等.结果表明,当叶轮与导叶的换算系数相差在3%的范围,且叶轮与导叶体结合部位能够光滑过渡的情况下,用大叶轮配小导叶进行相似换算与叶轮及导叶体采用同一换算系数所测得的性能可以与模型泵性能相一致.A remodeling design of circulating pump of 600 MW power unit is introduced which adopts different conversion factors for the impeller and guide blade according to the same model pump. General design was used by taking two circulating pumps of 600 MW Panshan power plant of Tianjin, and two circulating pumps of 600 MW Jingtang power plant of Chengdu as examples. Design methods and design points were detailed from theoretical and experimental points of view. The results indicate that , adopting either different or the same conversion factors to design the impeller and the guide blade, the same property as the model pump is obtained if the difference between the conversion factor of the impeller and that of the guide blade was below 3% and the combined part transition between the impeller and the guide blade can be slippery.

关 键 词：循环泵 叶轮 导叶 换算系数 改型设计 性能对比 发电厂 

分 类 号：TH313[机械工程—机械制造及自动化]