小型锅炉给水泵的优化设计

Improved Design of Lower Boiler Feed Pump

介绍了一种与现在多级离心泵完全不同的小型锅炉（10t／h以下）给水泵。在同样的低比转数（n6≤20）条件下，比现有多级离心泵的水力效率可提高5％～8％。因结构重量的大幅度下降，其造价比现有多级离心泵低10％以上，其性价比有显著优势，值得在小型锅炉中推广。

A improved design of lower boiler feed pump（ ≤ 10t/h） , which is different remarkably from multi - stage centrifugal pump is presented. The efficiency of Pitot tube pump is 5% - 8% higher than which of centrifugal pump under the same low specific speed（ ns ≤20）. Since the structure and the weight dramatically drop, its cost is over 10% lower than multi - stage centrifugal pump, distinctly better in its performance and price, it is utterly worth to be extended and employed in lower boiler - feed pump.