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| DOI：10.13522/j.cnki.ggps.2019100 |
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| Experimental study on uniformity of combination and the paving spacing for thin wall micro spray belt |
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WANG Jinyi, YANG Luhua, GOU Wanli, DI Zhigang
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1.College of Water Conservancy Engineering, Tianjin Agricultural University, Tianjin 300384, China; 2. Tianjin Agricultural Water Conservancy Technology Engineering Center, Tianjin 300384, China
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| Abstract: |
| 【Objective】We aimed to study the combination uniformity and optimum laying space about the thin wall micro spray belt.【Method】Three kinds of micro spray belts were chosen which were often used in water saving engineering. Experiments were carried out on the intensity, uniformity and width of micro-spray belt under different pressures, and the Surfer software Kriging interpolation method of mesh data was used according to water volume combination principle about the thin wall micro spray belt with pipe diameter of N44 mm.Within the range of 1.0~2.0 R (spraying width), the spraying intensity and uniformity of micro-spraying belt for combination were analyzed, and the optimal spacing of micro-spraying belt for combination was determined.【Result】The results showed that the spraying intensity of single tube micro-spraying belt distributed as single and double peak with the increase of spraying distance, and the spraying width increased with the pressure. In addition, the combined spraying intensity decreased with the laying distance and the combination uniformity presented a trend of “large-small-large-small” with the increase of paving spacing.When the paving spacing of micro-spray belt was 1.6 R, the combination uniformity reached its peak.【Conclusion】The combined spraying intensity is smaller and the combined uniformity is larger when paving spacing is 1.8 R and 1.9 R, which meets the requirements of the commonly specification using micro spraying belt with pipe diameter of 44 mm in the market. |
| Key words: thin wall micro spray belt; spraying width; laying spacing; uniformity of combination; spraying intensity of combined |
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