电厂给水泵设计参数的分析计算
李经宽，高红斌
（山西大学动力工程系，山西太原030006）
摘要： 电厂锅炉给水泵的主要设计参数包括流量、扬程、功率、效率、转速、气蚀余量等，分析了这几个主要参数
设计值的计算方法，研究结果表明：给水泵的扬程由汽包与除氧器位差、汽包压力、除氧器与汽包中流动阻力共同决定；
比转速是决定泵的性能和形状的准则数，比转速又是由流量、扬程来计算的，归根到底泵的性能和形状的需要是由锅炉
系统的设计需要来决定。
关键词： 给水泵；参数；优化设计
中图分类号： TH137.5 文献标识码： A 文章编号： 2095-0802-(2015)12-0001-02
Analytical Calculation of Design Parameter of Power Plant Feed Pump
LI Jingkuan, GAO Hongbin
(Power Engineering Department, Shanxi University, Taiyuan 030006, Shanxi, China)
Abstract: The main design parameters of feed water pump used in power plant boiler include flow rate, lift range, power,
efficiency, rotate speed, cavitation margin and so on. This paper analyzed calculation methods of the design value for several main
parameters. The results showed that: lift range of feed water pump was codetermined by potential difference between steam drum
and deaerator, drum-steam pressure, flow resistance in the deaerator and drum; specific rotary speed is dimensionless numbers to
determine the performance and shape of pump and is calculated by flow rate and lift range, and in the final analysis, the
performance and shape of pump are determined by boiler system design needs.

Key words: feed water pump；parameters；optimization design