Optimization Design for Pipeline of On-line Fertigation Device Based on PIPENET Software

LI Kai;YIN Yi-lei;HE Bin;HOU Yong;ZHANG Yue-hong;ZHANG Xue-jun;Chinese Academy of Agricultural Engineering Planning and Design;Key Laboratory of Farm Building in Structure and Construction, Ministry of Agriculture and Rural Affairs;Northwest A&F University;

PIPENET;;fertigation device;;pipeline simulation;;optimization design

The existing precision fertigation devices have similar fertilizer mixing principle, but according to different irrigation and fertilization requirements, the layout of pipeline, the types of fertilizer absorbing elements and the forms of water pumps are different. In order to speed up the research and design process of equipment, the design pipeline is simulated based on PIPENET software. The optimum design method is put forward to determine the appropriate amount of water pump, simulate the appropriate flow rate and pressure for Venturi pipe operation, and improve the efficiency and stability of fertilizer absorption equipment. The simulation results are verified by experiments. The pressure difference between the simulation results and the verification test results is less than 5.5%. Through comparison, it is proved that PIPENET software can be used in assistant design of fertilizer machine pipeline amount. Especially, the pump parameters can be determined quickly. And pipe diameter can be corrected according to flow rate. Thus, the design process can be accelerated and the reliability of the equipment can be improved.