明渠非满管电磁流量测箱测试评价  

Test and evaluation of electromagnetic flow measuring box for non-full pipe in open channel

作　　者：鲍子云 王洁 李王成[2,3] 杨郁挺 王永平 BAO Ziyun;WANG Jie;LI Wangcheng;YANG Yuting;WANG Yongping(Ningxia Institute of Water Resources Research,Yinchuan, Ningxia 750021, China;School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan, Ningxia 750021, China;Engineering Technology Research Center of Water-saving and Water Resource Regulation in Ningxia, Yinchuan, Ningxia 750021, China;Ningxia Xiayu Water-saving Technology Co., Ltd., Yinchuan, Ningxia 750021, China)

机构地区：[1]宁夏水利科学研究院,宁夏银川750021 [2]宁夏大学土木与水利工程学院,宁夏银川750021 [3]宁夏节水灌溉与水资源调控工程技术研究中心,宁夏银川750021 [4]宁夏夏禹节水科技有限公司,宁夏银川750021

出　　处：《排灌机械工程学报》2022年第5期482-487,共6页Journal of Drainage and Irrigation Machinery Engineering

基　　金：宁夏回族自治区重点研发计划重大项目(2018BBF02022);国家自然科学基金资助项目(51869023);宁夏高等学校一流学科建设(水利工程学科)资助项目(NXYLXK2017A03);宁夏回族自治区级青年拔尖人才项目(030103030008)。

摘　　要：为明确非满管电磁流量测箱在明渠正常输水及不同干扰物存在条件下测流结果的精确度及稳定性,将不同流量测箱与标准流量计在不同工况条件下的测量结果进行对比分析,结果表明:超声、压力液位流量测箱在不同工况下与标准流量计测得流量数据符合测流精度要求;从测流数据的稳定性角度考虑,超声、压力液位流量测箱测量数据的标准差等参数较压力A型流量计低,压力液位流量测箱的误差分布在0.04728~0.09134,超声液位流量测箱的误差分布在0.04750~0.09250,压力液位A型流量计误差分布在0.04490~0.09230;从宁夏灌区实际情况考虑,超声、压力液位流量测箱能在不同工况下工作且精度较高,可以适当推广应用.In order to clarify the accuracy and stability of the flow measurement results of the non-full pipe electromagnetic flow measurement box under the conditions of normal water delivery in the open channel and the presence of different interferences,the measurement results of different flow boxes and standard flowmeters under different working conditions were compared and analyzed.The analysis results show that the flow data measured by ultrasonic,pressure liquid level and flow measurement meet the requirements of flow measurement accuracy under different working conditions with the stan-dard flowmeter.Considering the stability of flow measurement data,the standard deviation of the data and other parameters of the ultrasonic and pressure liquid level flow measurement box are lower than those of the pressure type-A flowmeter.The error distribution range of the pressure level and flow mea-suring box is 0.04728-0.09134,the error distribution of the ultrasonic level and flow measuring box is between 0.04750-0.09250,and the error distribution of pressure level of A-type flowmeter is between 0.04490-0.09230.Considering the actual situation of Ningxia irrigation area,the ultrasonic and pressure liquid level flow measuring box can work under different working conditions with high accuracy,which can be promoted and applied appropriately.

关 键 词：明渠 非满管电磁流量测箱 测流 相对误差 标准差 

分 类 号：S277.9[农业科学—农业水土工程]