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当前位置: 首页 > 文章 > 大型引黄灌区超声波流量计的改进与应用 排灌机械工程学报 2018 (12) 1276-1281
Position: Home > Articles > Improvement of ultrasonic flowmeter and its application in large Yellow River Irrigated District Journal of Drainage and Irrigation Machinery Engineering 2018 (12) 1276-1281

大型引黄灌区超声波流量计的改进与应用

作  者：
史中兴;张师玮;张彦蕊;于金文
单  位：
甘肃省景泰川电力提灌管理局;西安理工大学水利水电学院;凯驰瑞鑫(大连)仪器发展有限公司
关键词：
超声波流量计;高浊度黄河水;大口径管道;计量;引黄灌区
摘  要：
为提高超声波流量计在大口径、高含沙引黄灌区应用过程中的计量精度,基于超声波流量计的原理,通过提高声源信号强度、减小传播衰减损失、修正温度曲线等方法对超声波流量计进行了改进.结果表明:频率为1 MHz的传感器声强强度及接收质量与0. 5,0. 2 MHz的传感器相比较低,信号中断严重;聚醚醚酮声导材料与聚砜声导材料相比声衰减较小;管道管径越大声衰减越大,大口径管道超声波流量计安装宜采用单声程模式;温度及泥沙等对计量精度有一定影响,且夏季侦测失败率较其他季节高;采用数字信号处理(DSP)可增加源信号处理量,缩短有效计算周期,消除由于泥沙含量变化所带来的散射声源损失;温度修正曲线能减小温度对测量精度的影响.研究结果可为大管径超声波流量计对黄河水的精确计量提供一定的技术支撑.
译  名：
Improvement of ultrasonic flowmeter and its application in large Yellow River Irrigated District
作  者：
SHI Zhongxing;ZHANG Shiwei;ZHANG Yanrui;YU Jinwen;Institute of Water Resources and Hydroelectric Engineering,Xi'an University of Technology;Administrative Bureau of Jingtaichuan Electric Lift Irrigation Project;Krcfis (Kecrichen flow and line and senser),Dalian;
单  位：
Kecrichen flow and line and senser
关键词：
ultrasonic flowmeter;;high turbidity Yellow River water;;large diameter pipeline;;measurement;;Yellow River Irrigated District
摘  要：
To improve the measurement accuracy of the ultrasonic flowmeter in the application of largediameter,and high sediment concentration irrigated area,based on the principle of ultrasonic flowmeter,the ultrasonic flowmeter was improved by increasing the signal intensity of the sound source,reducing the propagation attenuation loss,and modifying temperature curves. The results show that the sensor with a frequency of 1 MHz has lower sound intensity and receiving quality than those of 0. 5 MHz and 0. 2 MHz,and the signal is severely interrupted; polyether-ether-ketone acoustic material has less acoustic attenuation than polysulfone; the larger the pipe diameter,the greater the sound attenuation,therefore,the large-diameter ultrasonic flowmeter can be installed in single-mode mode; temperature and sediment have a certain influence on the measurement accuracy,and the summer detection failure rate is higher than other seasons; the digital signal processing( DSP) can increase the amount of source signal processing,shorten the effective calculation period,and eliminate the loss of scatteredsound source caused by the change of sediment content; the modified temperature curve can reduce the effect of the temperature on measurement accuracy. The research results can provide a certain technical support for the accurate measurement of the Yellow River water by the large diameter ultrasonic flowmeter.

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