摘要
建立调压灌溉系统各部分压力变幅的对应关系是合理确定调节压力限的基础。通过管网各节点压力变量的分析及建立水泵机组供水扬程与调压罐压力平衡之间的关系，提出了田间压力变幅、水泵扬程变幅与调压罐压力、水位变幅的直接对应关系，据此可很简便地根据田间灌水质量所要求的田间压力允许变幅及水泵机组经济安全运行所允许的扬程变幅，综合确定调压罐的调节压力限。
The relationship of the pressure ranges among the parts of pressure regulation irrigation system is the basis for determining the range of pressure regulation.In this paper,through analyzing the pressure varieties in the pipe networkand establishing the relationship between the pump head and air chamber pressure,the relationship of the varying ranges among the field pressure and the pump head and the pressure & water level in the chamber is advanced.Thus we can easily determine the pressure range in the chamber in the light of the pressure range demanded by the irrigation quality in the field and the range of pressure allowance of the pump unit running safely and economically.
出处
《灌溉排水》
CSCD
1998年第1期5-8,共4页
Irrigation and Drainage
基金
中国农业科学院院长基金
关键词
调压灌溉
田间压力
水泵扬程
调压罐压力
Pressure regulation irrigation, field pressure, pump head, air chamber pressure, change range, corresponding relationship
