中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 灌溉渠道直读式挡板量水计试验及应用 农业工程学报 2010,26 (4) 25-30
Position: Home > Articles > Experiment and application of simple direct-reading water measuring device for irrigation canals Transactions of the Chinese Society of Agricultural Engineering 2010,26 (4) 25-30

灌溉渠道直读式挡板量水计试验及应用

作  者：
蔡守华;赵江辉;王洁;袁尧
单  位：
扬州大学水利科学与工程学院
关键词：
测流;测流仪器;水表;挡板;直读;灌溉渠道
摘  要：
有利于推广应用的灌溉渠道量水设施不但要求具有一定的测量精度,还要满足测量方便、成本适中的要求,为此该文提出一种直读式挡板量水计。该量水计由挡水板、分流水表及水表井组成。根据流体力学理论,证明了在孔口自由出流和淹没出流两种情况下,渠道流量与通过水表的流量之比值近似于常数的结论。在U形渠道上进行的试验也表明,在自由流和淹没流两种流态情况下,该比值均接近于常数,最大测流误差分别为3.60%和5.45%。该量水计具有结构简单、成本低廉、测量方便、精度可靠的特点,适用于小型灌溉渠道量水。
译  名：
Experiment and application of simple direct-reading water measuring device for irrigation canals
作  者：
Cai Shouhua,Zhao Jianghui,Wang Jie,Yuan Yao (College of Water Conservancy Science and Engineering,Yangzhou University,Yangzhou 225009,China)
关键词：
flow measurement,flow measuring instruments,water meters,baffles,direct-reading,irrigation canals
摘  要：
Water measuring devices easy to apply widely should have some particular strengths such as satisfactory accuracy,easy observation,and low cost.Towards this goal,a simple direct-reading water measuring device suit to irrigation canals was developed.It is composed of one or two baffles,an ordinary water meter and a water meter well.It is concluded that the ratio of canal discharge to water meter discharge is a constant in both states of free flow and drowned flow.Laboratory experimental results obtained in U-shaped canal also showed that the ratio M approximates to a constant in the two flow states,and the maximum relative errors were 3.60% and 0.45%,respectively.Since 2008,the direct-reading water measuring devices have been installed and operated satisfactorily in Yanyun Irrigation District and Zhuluoba Irrigation District,Jiangsu Province.This device has some characteristics such as simple structure,low cost, convenient measurement,and satisfactory accuracy.It can be used for small irrigation canals.

相似文章

导出引用
计量
文章访问数: 9
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46