变工况下汽动给水泵的经济性分析  

Economical analysis on steam feed pump under varying load condition

作　　者：刘明福[1] 谢添玺 

机构地区：[1]山西大学,太原市030013

出　　处：《中国农机化学报》2016年第5期160-163,共4页Journal of Chinese Agricultural Mechanization

基　　金：山西省基础研究计划资助项目(K12012130003)

摘　　要：为对汽动给水泵的经济性进行分析,简介小汽轮机与给水泵的连接方式,建立汽动给水泵压力、焓升、功率和效率的求解方程。通过与设计数据比较可知:提出的求解相应参数的方法具有较高的精确度,完全可以满足工程的需要;建立的效率方程可以作为评判汽动给水泵的经济性的重要依据;滑压运行要比定压运行经济性高,可以提高给水泵的效率和机组的热经济性。In order to analyze economic of steam feed pump,it was introduced the connection mode of the small turbine and water pump,pre-established the equations of pressure,enthalpy rise,power and efficiency.By comparing with the design data,the decisions showed that：the equations has high accuracy,and can be as the basis for evaluation of the economics of steam feed pump;Sliding pressure operation than the constant pressure operation economy of high,it can improve the thermal efficiency and economic unit feed water pump.

关 键 词：汽动给水泵 效率 经济性 

分 类 号：TH122[机械工程—机械设计及理论]