| Cite this article: | 赵新凯,莫彦,夏辉,等.毛管末端自动冲洗阀研发及其水力性能试验研究[J].灌溉排水学报,0,():-. |
| zhaoxinkai,mo yan,xiahui,et al.毛管末端自动冲洗阀研发及其水力性能试验研究[J].灌溉排水学报,0,():-. |
|
| |
|
|
| This article has been：Browse 1535Times Download 0Times |
|
|
|
| DOI： |
|
| Development of automatic flushing valve at the end of dripline and its hydraulic performance test research |
|
zhaoxinkai1, mo yan2, xiahui1, Gong yiteng3, wang jiandong4, zhang yanqun5, gong shihong5, li qiaoling5
|
|
1.Agricultural University of Hebei;2.Institute of Water Resources, China Institute of Water Resources and Hydropower Researc;3.China Overseas Consulting Co., Ltd.;4.Institute of Agricultural Environment and Sustainable Development, Chinese Academy of Agricultural Sciences;5.Institute of Water Resources, China Institute of Water Resources and Hydropower Research
|
| Abstract: |
| 【Objective】Provide scientific basis for the research and development of automatic flushing valve at the end of dripline.【Method】Selecting three structural parameters of dentation length l, dentation width w and the height of the bonnet Za. Through single factor experiment, using 3D printing technology to process 7 flushing valves to test their flushing time T, flushing water volume Q and flushing velocity V under different flushing valve inlet pressure H2.【Result】When H2 is 0.038~0.096 Mpa, the T of the 7 flushing valves is 7.5~32.1 s, the Q is 2220~5725 ml, and the V is 0.88~1.51 m.s-1. Among them, when H2≤0.058 Mpa, T and Q are negatively correlated with H2; when H2>0.058 Mpa, T and H2 are negatively correlated, and there is no correlation between Q and H2 and the change magnitude of Q is small. T and Q are positively correlated with l, w and Za. The minimum flow area of the labyrinth channel can be affected by l and w. The amount of water entering into the upper cavity of the flushing valve can be affected by Za, which can finally affect T and Q. Within the scope of the factor level used in this experiment, the order of the three parameters influence on T and Q is w>l>Za. V is less affected by structural parameters and has a positive correlation with H2.【Conclusion】T and Q are closely related to the amount and velocity of the water flowing into the upper cavity and the distance between the elastomer and the water outlet. The air in the upper cavity is a key factor to hinder the increase of T and Q. The V is mainly affected by H2. |
| Key words: Drip irrigation with the Yellow River; anti-clogging; flushing time; flushing water volume; flushing velocity |
|
|
|
|
|
|
