Abstract:To explore the water distribution influenced by different working conditions of fluidic sprinkler, the best sprinkler uniformity was about to achieved. Through the analysis of water distribution data in different combination spacing and pressure, the precipitation intensity was fitted. The Christian-sen and distribution uniformity coefficient were used to calculate the corresponding sprinkler irrigation uniformity. The results show that CU values of square combination sprinkler irrigation decreased with the increase of sprinkler head spacing between 1.0R and 1.4R, and the CU values were all greater than 70%. The proportion of sprinkler intensity in the low-value was higher in square combination than that in the triangle combination under the combination spacing of 1.0R and 1.2R. While the combination spacing of 1.4R was opposite to the above. When the pressure increased from 0.1 MPa to 0.3 MPa, the peak irrigation value in the triangular combination decreased first and then increased with the increase of the pressure. The uniformity of spraying area was improved as increasing working pressure under square combination. The pressure loss did not always reduce the uniformity of sprinkler irrigation. The pressure loss of 10% has little impact on the uniformity of sprinkler irrigation under the pressure of 0.2-0.3 MPa. The triangular combination with 1.4R spacing should be adopted under the installation height of 1.4 m and pressure of 0.25 MPa.
史永杰,朱兴业*,胡广,张爱英,李吉鹏. 不同工况对喷灌水量分布的影响[J]. 排灌机械工程学报, 2021, 39(3): 318-324.
SHI Yongjie,ZHU Xingye*,HU Guang,ZHANG Aiying,LI Jipeng. Effect of water distribution on different working conditions for sprinkler irrigation. Journal of Drainage and Irrigation Machinery Engin, 2021, 39(3): 318-324.