摘要
从理论上分析和表达了水泵机械效率、水力效率、容积效率及总效率;分析和表达了泵效率、泵装置效率的相似性,评价了已见各种泵效率的换算公式,推导并提出了泵效率常数暨新的泵效率、泵装置效率换算方法;所提效率公式、效率换算方法对泵性能参数的可信性有鉴别、评价作用,对开发高效水力模型,提高泵站效率有指明路径作用。针对离心泵(及蜗壳式混流泵)和轴流泵(及导叶式混流泵)所提统一的表达式,既适用于泵,亦适用于泵装置;既适用于模型泵,亦适用相似的任意口径、任意参数的原型泵及原型泵装置。泵及泵装置性能统一表达的研究和实现,对于提高泵的设计水平,对于泵及泵站特性准确预测均有较大的理论意义和实际应用价值。
The formulas for mechanical, hydraulic, cubage and overall pump efficiencies are given theoretically. The pump efficiency analogies and pumping system efficiency analogies are discussed. Various formulas for converting pump efficiency are evaluated and discussed. A new conversion method for efficiency coefficient and a new pump efficiency formula are derived.. The formula and methods are useful to differentiate and evaluate the reliability of the pump characteristics and are instructional for developing new high efficient pumps. The formula derived from the centrifugal pump （the volute casing mixed flow pump） and the vertical axial flow pump （the vertical mixed flow pump） are also applicable to the pump system, of any size and any other parameters. The study gives a universal formula for the design of pumps and pump systems.
出处
《排灌机械》
2007年第1期1-8,共8页
Drainage and Irrigation Machinery
基金
国家自然科学基金资助项目(50279045)
关键词
水泵
水泵效率
装置效率
效率换算
pump
pump efficiency
efficiency of pumping system
conversion methods for efficiency
