| 常压灌水器在低压条件下水力性能试验研究 |
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| 引用本文： | 马晓鹏,龚时宏,王建东,田金霞,胡明罡.常压灌水器在低压条件下水力性能试验研究[J].灌溉排水学报,2009(5). |
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| 作者姓名： | 马晓鹏 龚时宏 王建东 田金霞 胡明罡 |
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| 作者单位： | 中国水利水电科学研究院;北京市水利水电技术中心; |
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| 基金项目： | 国家863计划课题(2006AA100213); 国家“十一五”科技支撑计划课题(2006BAD11B02); 国家自然科学基金项目(50709045) |
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| 摘 要： | 鉴于目前国内低压滴灌系统中的滴灌带(管)基本沿用常压滴灌下使用的滴灌带(管),对常压滴灌系统中使用较多的国内6种单翼迷宫和内镶片式滴灌带在低压下的水力性能进行了试验研究,试验结果表明,在2~8 m和6~14 m水头压力范围拟合的流量与压力关系式不相同,在2~8 m水头压力范围的流态指数明显高于在6~14 m水头压力范围的流态指数。在较低压力下测定灌水器的制造偏差时,相比额定压力下所测定的结果表现出增大的趋势,即由于灌水器制造工艺和材料配方引起的制造偏差,在工作压力较低时表现的更为明显。
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| 关 键 词： | 灌水器 低压 水力性能 制造偏差 |
Hydraulic Performance of Emitters under Low Operating Pressure |
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| MA Xiao-peng,GONG Shi-hong,WANG Jian-dong,TIAN Jing-xia,HU Ming-gang.Hydraulic Performance of Emitters under Low Operating Pressure[J].Journal of Irrigation and Drainage,2009(5). |
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| Authors: | MA Xiao-peng GONG Shi-hong WANG Jian-dong TIAN Jing-xia HU Ming-gang |
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| Institution: | MA Xiao-peng1,GONG Shi-hong1,WANG Jian-dong1,TIAN Jing-xia2,HU Ming-gang2(1.China Institute of Water Resources and Hydropower Research,Beijing 100044,China,2.Beijing Water Resources and Hydropower Technology Center,Beijing 100073,China) |
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| Abstract: | According to common drip tape used low operating pressure of drip irrigation system,hydraulic performance of the different types of the emitters which are very popular on the market at present.The results show that the relationship of emitter discharge and pressure under low operating pressure(2~8 m water) was different from that under conventional pressure(7~12 m water).Low operating pressure of the manufacturer's variation of emitters which compared with under operating pressure of the manufacturer's vari... |
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| Keywords: | emitters low operating pressure hydraulic performance manufacturer's variation |
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