| PY_130型摇臂式喷头摇臂运动规律试验研究 |
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| 引用本文： | 余芬芬,严海军,王福军.PY_130型摇臂式喷头摇臂运动规律试验研究[J].灌溉排水学报,2009(6). |
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| 作者姓名： | 余芬芬 严海军 王福军 |
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| 作者单位： | 中国农业大学水利与土木工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(50509024); 教育部新世纪优秀人才支持计划(NCET-04-0133) |
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| 摘 要： | 采用先进的高速摄影技术,对PY130摇臂式喷头的导流器受水射流冲击进行了试验研究,得到了摇臂运动规律,并与摇臂解析公式进行了对比分析。结果表明正转撞击周期随着进口工作压力增大而增大,反转撞击周期和正、反转过程的非自由运动时间随着进口工作压力的增大而减少。正转过程的自由运动时间要远大于非自由运动时间,反转过程的非自由运动时间约占撞击周期的25%。在正转过程的自由运动阶段,摇臂角位移变化呈正弦曲线;在正、反转运动过程的非自由运动阶段,角速度变化无明显规律。角位移和角速度的试验值与计算值在数量级上是一致的,试验值高于计算值。
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| 关 键 词： | 摇臂式喷头 高速摄影技术 摇臂运动 水射流 |
Experimental Study on the Movement Properties of the Swing Arm for the PY130 Impact Sprinkler |
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| YU Fen-fen,YAN Hai-jun,WANG Fu-jun.Experimental Study on the Movement Properties of the Swing Arm for the PY130 Impact Sprinkler[J].Journal of Irrigation and Drainage,2009(6). |
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| Authors: | YU Fen-fen YAN Hai-jun WANG Fu-jun |
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| Institution: | YU Fen-fen,YAN Hai-jun,WANG Fu-jun (College of Water Conservancy and Civil Engineering,China Agricultural University,Beijing 100083,China) |
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| Abstract: | An experiment study on the swing arm forced by the jet flow from the nozzle of the PY130 impact sprinkler was conducted by using the high speed photography technique.The movement properties of the swing arm was obtained and compared with the calculated results by the analytical equations.The results show that the positive rotation cycle increases with the inlet working pressure,while the reverse rotation cycle and the restricted motion time during both positive and reverse rotations decrease with the increa... |
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| Keywords: | impact sprinkler high speed photography technique swing arm movement jet flow |
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