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作 者:付博 何新林[1] 陈金水[2] 赵丽[1] 邓小来 辛博 FU Bo;HE Xinlin;CHEN Jinshui;ZHAO Li;DENG Xiaolai;XIN Bo(School of Water Conservancy Construction Engineering, Shihezi University, Shihezi, Xinjiang 832000, China;College of Compu-ter and Information, Hohai University, Nanjing, Jiangsu 210006, China;Beijing Lianchuangsiyuan Measurement and Control Technology Co. Ltd., Beijing 102200, China)
机构地区:[1]石河子大学水利建筑工程学院,新疆石河子832000 [2]河海大学计算机与信息学院,江苏南京210006 [3]北京联创思源测控技术有限公司,北京102200
出 处:《排灌机械工程学报》2021年第4期372-378,共7页Journal of Drainage and Irrigation Machinery Engineering
基 金:国家自然科学基金资助项目(U1803244);国家重点研发计划项目(2017YFC0404304);新疆生产建设兵团科技攻关项目(2018AB027);石河子大学科研计划项目(KX00860105,KX008201)。
摘 要:为提高新型超声波方形量水槽在非淹没出流条件下的测流量精度,加强新型超声波方形量水槽在明渠量测水中的适应性,进而推进灌区信息化建设,在超声波方形量水槽前后加设水力收缩段,并引入水力学公式辅助测流,最后与三角堰进行流量误差对比试验研究.研究结果表明:无收缩段的方形量水槽在淹没出流条件下测流误差低于8%;有收缩段方形量水槽在流量大于0.1 m^(3)/s时测流误差低于8%;流量小于0.1 m^(3)/s时收缩段流量公式计算误差小于5%.收缩段和水力学公式辅助测流的方法有效改善了新型超声波方形量水槽在非淹没出流条件下的测流精度,提高了新型超声波方形量水槽在明渠量水中的适用性,为超声波方形量水槽在实际量水中的应用提供技术保障.这种精度高,适应性强,测流简便的新型量水槽节约了明渠量水所需的人力物力,推动了灌区量水信息化的建设进程.In order to improve the flow measurement accuracy of the new ultrasonic square measuring flume under the condition of non-submerged outflow,hydraulic contraction sections were added before and after the square flume and hydraulic formula was introduced to assist the flow measurement.The flow error comparison test was carried out with the triangular weir.Results show that the flow measurement error of square channel without contraction section is less than 8%under the condition of submerged outflow;the flow measurement error of square channel with contraction section is less than 8%when the flow rate is greater than 0.1 m^(3)/s,and the calculation error of flow formula in the contraction section is less than 5%when the flow rate is less than 0.1 m^(3)/s.The method of flow measurement assisted by contraction section and hydraulic formula can improve the accuracy of flow measurement of square channel under the condition of non-submerged outflow,furthermore,the applicability of the square channel is improved.It lays a foundation for the application of ultrasonic square measuring flume in actual water measurement.This new type of flume with high precision,strong adaptability and simple flow measurement can save the manpower and material resources needed for open channel water measurement,and promote the construction process of information water measurement in irrigated areas.
关 键 词:测流精度 超声波方形量水槽 收缩段 三角堰 测流公式
分 类 号:S277.6[农业科学—农业水土工程]
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