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| Double spray guns technology of energy saving and quality guaranteed hard hose traveler |
| LIU Yichuan1,2,ZHANG Rui1,2,ZHU Delan1,2*,GE Maosheng1,2,GAO Fei1,2,ZHAO Haiqing1,2 |
| 1. Institute of Water Saving Agriculture in Arid Areas of China, Northwest A & F University, Yangling, Shaanxi 712100, China; 2. College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China |
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Abstract In order to solve the problem of high working pressure required for single-gun irrigation on reel-type sprinkler irrigation machines, double spray guns for combined irrigation was proposed to use. Experiments were carried out on the mobile spraying water distribution of double and single spray guns under different working pressures to compare and analyze the irrigation uniformity of the two spray guns under different round irrigation combinations. The results show that when the wor-king pressures of double and single spray guns are 0.10 and 0.25 MPa, the spraying widths are 45.08 and 45.60 m, respectively. When the two spray guns are combined with 1.5 times the spraying radius of the nozzle car, the combined uniformity is 81.72 and 80.36%, respectively, and the spraying effect is basically the same. Using the equivalent annual value method to compare the initial investment, energy consumption and annual operating costs of the two spray guns, it is found that under this working condition, the initial investment, energy consumption and annual operating costs of double spray guns are 27.45, 77.58 and 105.04 yuan/hm2 respectively, those of single spray guns are 12.95, 193.96 and 206.91 yuan/hm2. Although the initial investment of double spray guns has increased slightly, its energy consumption and annual opera-ting costs are reduced by 60.00% and 49.23% respectively compared with single spray guns. Therefore, spraying with double spray guns can reduce working pressure, energy consumption and annual operating costs while ensuring the quality of spraying.
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Received: 22 April 2021
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