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動態(tài)水壓下非旋轉(zhuǎn)式折射噴頭水力特性
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“十二五”國家科技支撐計劃資助項目（2011BAD29B00）和高等學校學科創(chuàng)新引智計劃（111計劃）資助項目


Hydraulic Performance of Fixed Spray Plate Sprinkler under Dynamic Water Pressure
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    摘要:

    為解決非旋轉(zhuǎn)式折射噴頭水量分布集中,，打擊動能較大的問題，構(gòu)建了動態(tài)水壓噴灌測試平臺,。選擇Nelson D3000型噴頭為研究對象，施加以三角函數(shù)型動態(tài)變化的水壓,，對噴頭的徑向水量分布與能量分布進行測試,，并與恒壓條件下的水量和能量分布進行對比。結(jié)果表明：構(gòu)建的動態(tài)水壓測試平臺能夠滿足對動態(tài)供水壓力的要求,，施加了動態(tài)水壓的Nelson D3000型噴頭徑向濕潤范圍由恒壓時的0.85~1.36m增加到2.55~4.42m,，噴灌強度最大值降低67.6%~78.4%，能量通量密度最大值降低52.9%~71.6%,，說明采用動態(tài)水壓供水可以有效地改善Nelson D3000型噴頭的徑向水量分布和能量分布,。

    Abstract:

    In order to improve the sprinkler application rate and kinetic energy distribution of fixed spray plate sprinkler, a dynamic water pressure based sprinkler test platform was built. A Nelson D3000 nozzle was selected and then the water application rate and kinetic energy distribution in radial direction were tested under both dynamic water pressure in trigonometric type and constant pressure. The results showed that the test platform could well meet the demands of dynamic water pressure. The wetness area of Nelson D3000 nozzle in radial direction increased from 0.85~1.36m to 2.55~4.42m. The maximum value of sprinkler application rate was reduced by 67.6%~78.4%, and the maximum value of energy density flux was reduced by 52.9%~71.6%. Both the sprinkler application rate and kinetic energy distribution of Nelson D3000 nozzle were effectively improved.

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葛茂生,吳普特,朱德蘭,張林,鞏興暉.動態(tài)水壓下非旋轉(zhuǎn)式折射噴頭水力特性[J].農(nóng)業(yè)機械學報,2015,46(2):27-33. Ge Maosheng, Wu Pute, Zhu Delan, Zhang Lin, Gong Xinghui. Hydraulic Performance of Fixed Spray Plate Sprinkler under Dynamic Water Pressure[J]. Transactions of the Chinese Society for Agricultural Machinery,2015,46(2):27-33.

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  • 收稿日期:2014-01-11
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  • 在線發(fā)布日期: 2015-02-10
  • 出版日期: 2015-02-10
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