Design And Analysis Of Crops Minitype Sprinkler Irrigation System

Sprinkler irrigation system can save water, save work, land-saving, conserving soil and water, strong adaptability, improve crop yield and quality, comprehensive benefit, make its get rapid development in the world. But because there are many kinds of sprinkler irrigation system, we need to according to the advantages and disadvantages of all kinds of sprinkler irrigation system and structure characteristics of comprehensive consideration, weigh the pros and cons, choose reasonable a way. This paper is study sprinkler irrigation system in semi-fixed pipe network.In this paper, specific design for sprinkler irrigation system. First, sprinkler type selection and determination of combined spacing、 operated mode. The sprinkler model checking, results show that the selected sprinkler to meet the requirements. Second, the overall lay of piping systems, the design of pipe materials、 structure size、 connection form and hydraulic calculation. Finally, the according to the hydraulic calculation, selecting rational pump and check, that the selection can ensure the safe operation of the pump.In this paper,3D model of sprinkler is established by using3D modeling software Solid Works, by Gambit software meshing. Import Fluent software to simulate the internal flow field of sprinkler flow movement, the flow speed and pressure field distribution and energy conversion are obtained. For the further the sprinkler internal structure size optimization and improve provides theoretical basis.Using mathematical recursive infinitesimal method is deduced more accurate calculation formula of laterals inlet pressure. By formula calculation compared with several kinds of experience approximate method, it results more close to the actual value.In this paper, graphic method and MATLAB software programming and drawing out characteristic curve of pump and pipeline. Ensure the best point position of pump so that it is stable and safe operation at higher efficiency range. In order to improve efficiency, energy conservation and get higher economic efficiency. This method is direct and image describes the location of the point.