| This article has been：Browse 112Times Download 111Times |
scan it! |
|
|
| DOI：10.13522/j.cnki.ggps.2023143 |
|
| 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 |
|
|
