灌溉流量自调节阀的结构设计与性能分析

Structural Design and Performance analysis of Irrigation flow Auto-regulating Valve

基于土壤负压原理、产品结构优化设计和信息感知、无线传输、微电子控制等先进技术,研发了适用于输配水管路的灌溉流量自调节阀新型样品,具有土壤实际水分状况感知采集、信息反馈和输水流量实时调节控制等复合功能。根据其工作原理和设计技术指标,通过室内试验对灌溉流量自调节阀进行指标测试和性能分析,结果表明:试制的DN25流量自调节阀样品的开度调节范围0~100%,在100~300 kPa供水压力下,流量自调节精准度达81%~99%,且控制灵敏度较高,阀片响应时间随着阀门开度增大而逐渐延长,单程启闭最长响应时间不足3 s,较好地实现了节水灌溉的流量精量调配功效,为流量自调节阀的进一步结构优化、性能改进和产品定型等提供技术依据。

According the principle of soil negative pressure,product structure optimization design and utilizing advanced technologies such as information perception,wireless transmission,and microelectronic control,we have developed and assembled a new type of irrigation flow regulating valve suitable for water distribution pipes,with the actual soil water condition sensing collection,information feedback and realtime adjustment and control of water flow and other composite functions.According to its working principle and design technical indicators,the index test and performance analysis of the irrigation flow regulating valve were performed through indoor simulation tests.The results show that the opening range of the test DN25 flow regulating valve sample is 0~100%,under 100~300 kPa water supply pressure,the accuracy of flow adjustment is 81%-99%,and the control sensitivity is high.The response time of the valve blade gradually increases with the increase of the valve opening,and the maximum response time for one-way opening and closing is less than 3s.It not only achieve better flow precision allocation effect of water-saving irrigation,but also provides technical basis for further structural optimization,performance improvement,and product shaping of the flow control valve.