| 引用本文: | 王世隆,王文娥,刘政光,等.机翼型闸墩量水闸门自动测流系统研发[J].灌溉排水学报,0,():-. |
| Wang Shilong,WANG Wene,LIU Zhengguang,et al.机翼型闸墩量水闸门自动测流系统研发[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 【目的】研发适用于小型矩形渠道的流量自动测量设施及系统，分析测流原理，建立流量公式，实现自动化测流。【方法】将机翼形量水槽与平板闸门结合，形成机翼型闸墩量水闸门流量测量设施。通过水力性能试验，分析不同流量和闸门开度下的过流特性。以STC89C51RC为核心研发自动测流系统，包括测流设施、数据处理与通讯设施及动力设施三个主要组成部分。【结果】机翼型闸墩量水闸门的闸孔出流与堰流的判别阈值为0.77~0.82，通过不同闸门开度下的淹没度判别自由出流和淹没出流，建立了闸孔出流和堰流的流量计算公式；应用超声波传感技术获取水位、闸门开度等信息，编写内置流量计算软件，实时采集和输出渠道流量；采用光伏设施提供系统所需动力。【结论】机翼型闸墩量水闸门自动测流系统测流精度较高，可为灌区小型矩形渠道自动化测流提供参考。 |
| 关键词: 槽闸组合；闸孔出流；超声波传感器；自动测流 |
| DOI： |
| 分类号:S274.4 |
| 基金项目:国家自然科学基金重点项目(U2243235)；陕西省水利科技计划项目(2021slkj-8) |
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| Development of Automatic Flow Measurement System for Airfoil-shaped-pier Measuring Sluice |
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Wang Shilong, WANG Wene, LIU Zhengguang, CHEN Tucheng, LIU Dukun, HU Xiaotao
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Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas,Ministry of Education,Northwest A FUniversity
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| Abstract: |
| 【Background】Water measurement in irrigated areas is a basic and key technology to promote the development of water-saving agriculture and improve the utilization rate of irrigation water. Automation of water measuring in canal system is one of the key technologies for modernization of irrigated areas. Along with the continuous development of the reform of water-saving and modernization in large and medium-sized irrigated areas, the water quantity technology of trunk branch canals in irrigated areas is relatively mature and the flow measurement facility is perfect. However, due to the large number and complex types of canals, the water quantity facility construction is not high and the automation monitoring degree is low, so it is highly significant to develop automatic water quantity technology of independent small channels.【Objective】To develop automatic flow measurement facilities and systems suitable for small rectangular channels, analyze flow measurement principle, establish flow formula, and realize automatic flow measurement.【Method】In this paper, an automatic flow measurement system of airfoil-shaped sluice gate is proposed by combining the airfoil-shaped measuring flume with the flat gate. Through the hydraulic performance test, the flow characteristics under different flow and gate opening are analyzed. With STC89C51RC as the core, the automatic flow measuring system is developed, including flow measuring facilities, data processing and communication facilities and power facilities. 【Result】The threshold of judging the outflow of gate and weir flow of airfoil gate pier was 0.77~0.82. The free outflow and submerged outflow were judged by the submergent degree of the gate under different gate opening, and the flow formulas of gate outflow and weir flow were established. Using ultrasonic sensing technology to obtain water level, gate opening and other information, automatic control and communication facilities are developed with STC89C51RC as the core, and a built-in flow calculation module is written to collect and output channel flow in real time. Photovoltaic facilities are used to power the system.【Conclusion】The automatic flow measuring system of airfoil gate pier has high accuracy, which can provide reference for automatic flow measuring of small rectangular channels in irrigation area. |
| Key words: sluice-flume combination; brake orifice discharge; ultrasonic sensor; automatic flow measurement |
