| 滴灌灌水器多类型流道的微压水力性能研究 |
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| 引用本文： | 黎安,刘洁,魏青松,王聪,史玉升,董文楚.滴灌灌水器多类型流道的微压水力性能研究[J].中国农村水利水电,2012,0(2):4-7. |
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| 作者姓名： | 黎安 刘洁 魏青松 王聪 史玉升 董文楚 |
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| 作者单位： | 1. 华中科技大学材料成形及模具技术国家重点实验室,武汉,430074
2. 武汉大学水资源与水电工程科学国家重点实验室,武汉,430072 |
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| 基金项目： | 国家自然科学基金资助项目(5070911) |
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| 摘 要： | 微压条件下灌水器的水力性能相对于常压时会发生不同程度的变化。通过试验研究了八种灌水器在微压条件下的流态特征、出水均匀度及抗堵塞性能。结果表明，非压力补偿式滴灌产品在微压和常压下的流量变化率没有明显波动，清水下出水均匀性良好，而抗堵塞性能较差；压力补偿式滴头因为在微压下存在启动水压而影响了工作状态，当超过启动水压后其出水均匀性与常压时没有明显变化，抗堵塞性能良好，但是流量随压力增大而增大，没有起到压力补偿作用。
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| 关 键 词： | 微压 滴灌 出水均匀度 灌水器堵塞 |
| 收稿时间： | 2010-12-10 |
| 修稿时间： | 2011-08-12 |
The Hydraulic Properties of Multiple Flow Channels of Drip Emitters under Micro-pressure |
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| LI An,LIU Jie,WEI Qing-song,WANG Cong,SHI Yu-sheng,DONG Wen-chu.The Hydraulic Properties of Multiple Flow Channels of Drip Emitters under Micro-pressure[J].China Rural Water and Hydropower,2012,0(2):4-7. |
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| Authors: | LI An LIU Jie WEI Qing-song WANG Cong SHI Yu-sheng DONG Wen-chu |
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| Institution: | 1.State Key Laboratory of Materials Processing and Die and Mould Technology,Huazhong University of Science and Technology,Wuhan 430074,China;2.State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China) |
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| Abstract: | The hydraulic properties of emitters will change under micro-pressure compared with the ordinary pressure.In this paper,the tests of eight types of emitters have been done to study the flow pattern character,uniformity of water flow and anti-clogging performance.The results show that,under micro-pressure,the flow rate of drip products is stationary,the uniformity of water flow of branch water is good.However,,the anti-clogging performance is poor.Pressure compensating emitters have starting water pressure under micro-pressure so that working condition is influenced.The uniformity of water flow and the anti-clogging performance are good when pressure is over starting water pressure.The flow rate of pressure compensating emitters grows with pressure,but the emitters don’t play a part in pressure compensating under micro-pressure. |
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| Keywords: | micro-pressure hydraulic properties drip emitters uniformity of water flow clogging |
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