| 引用本文: | 刘鸿涛,李晓军,周 双,等.测控一体式分水农门试验与水力特性探索[J].灌溉排水学报,2024,43(2):25-30. |
| LIU Hongtao,LI Xiaojun,ZHOU Shuang,et al.测控一体式分水农门试验与水力特性探索[J].灌溉排水学报,2024,43(2):25-30. |
|
| 摘要: |
| 【目的】设计一种一体式量控建筑物—测控一体式分水农门，探究其在梯形渠道上的量水性能。【方法】利用农门控制碟阀和圆管组合而成测控一体式分水农门（以下简称分水农门），研究不同流量Q、不同农门控制碟阀开度θ下的分水农门各项水力特性以及流量公式。【结果】①通过拟合设计分水农门流量公式计算出的流量与实测流量平均误差为4.34%，流量量测误差小于±5%，满足灌区量水精度要求。②分水农门中输水管道部分“最优测点”位于管道整体长度0.475~0.575处。③分水农门主要是在水流经过碟阀时产生局部水头损失和沿程水头损失，水头损失介于29.54%~38.89%。【结论】当流量在30~65 m3/h时，不同流量工况和碟阀开度下分水农门满足灌区量水精度要求，可在灌区末级渠道进行水量计量。 |
| 关键词: 量水设施；灌区量水；测流原理；水力特性 |
| DOI：10.13522/j.cnki.ggps.2023143 |
| 分类号: |
| 基金项目: |
|
| Hydraulic characteristics of the integrated water distribution farm gate |
|
LIU Hongtao, LI Xiaojun, ZHOU Shuang, LI Jinjin, ZHAO Ruijuan, ZHAO Hu, ZHANG Fujun
|
|
1. School of Water Conservancy and Environmental Engineering, Changchun Institute of Technology, Changchun 130012, China;
2. Jilin Province Water Engineering Safety and Disaster Prevention Engineering Lab, Changchun 130012, China;
3. China Water Northeastern Investigation, Design and Research Co., Ltd, Changchun 130012, China; 4. Irrigation and Drainage Development Center of China, Beijing 100054, China; 5. Songliao Water Resources Commission, Changchun 130012, China;
6. Yongji County Xingxing Shao Reservoir Irrigation Area Management Center, Jilin 132214, China
|
| Abstract: |
| 【Objective】In view of the lack of integrated facilities for measuring and controlling flow of Doudou (agricultural) channel in irrigation area, an integrated quantity control building-Measurement and Control Integrated Water Distribution Farm Gate was designed to explore its performance on trapezoidal channel.【Method】Using the combination of agricultural gate control disc valve and circular pipe to form an integrated water distribution gate (hereinafter referred to as the water distribution gate), the hydraulic characteristics and flow formulas of the water distribution gate under different flow rates and different opening of the agricultural gate control disc valve are studied by model test.【Result】①The flow formula of Water Distribution Farm Gate was fitted and designed. The average error of the flow calculated by the formula was 4.34% compared with the measured flow, and the measurement error of flow was less than ±5%, which met the water accuracy requirements of irrigation area. ②The “optimal water head” of Water Distribution Farm Gate is between 0.475 and 0.575 L in the overall length of the pipeline.③The water distribution gate mainly produces local head loss and head loss along the distance when the water flow passes through the disc valve, and the range of head loss is 29.54% to 38.89%. 【Conclusion】When the flow rate is in the range of 30 - 65 m3/h, under different flow conditions and disc valve opening degree, the water metering can be carried out in the final channel of the irrigation area. Therefore, Water Distribution Farm Gate has a high prospect of popularization and practical application value in the future. |
| Key words: water measuring facilities; irrigation area measuring water; current measuring principle; hydraulic characteristics |
