低压管道输水灌溉系统中管网与井泵的合理配套

The Reasonable Assortment of Pipe Network and Well-pump in Irrigation System of Low Pressure Delivery Pipe Lines

低压管道输水灌溉(简称“管灌”)系统由井、泵和管路等组成,本文根据该系统的运行特点,首行分析了系统综合装置效率的变化规律,并在引进输水管网设计点概念的基础上,研究了管网与井泵的合理配套。在设计中综合考虑了泵的扬程和泵的价格等因素,使设计出的整个灌溉系统运行于较经济的节能状态,并使系统的年费用最小。

Irrigation system of low pressure delivery pipe lines is compos of wells, pumps and pipelines. On the basis of the operation characteristics of such system this paper analyzes the change of efficiency of comprehensive unit. And on the basis of the concept of design of delivery pipe network to this paper studies the reasonable assortment of pipe network and well-pump. The factors of pump lift and pump price have been considered comprehensively in design, thus making whole irrigation system work under the economical and energy-saving condition and making the system have minimum yearly cost.