多声道气体超声流量计的研究

实际流量测量时，多种因素如噪声、硬件、管壁粗糙程度、流场分布等都会降低气体超声流量计的精度。而采用多声道流量计能够降低这些因素影响。在详细介绍测量原理与影响因素的基础上，利用数值积分方法，对声道安装位置进行数学建模和优化研究，求解权重系数。因计算出测量面的速度均值，提升了测量精准度。在理论支持下，对流量计硬件系统进行规划及传感器等硬件选型。通过实验测量与数据分析，测量精度能基本满足要求，可为创新下代气体超声流量计提供一定参考。

Research of multipath gas ultrasonic flowmeter

A variety of factors such as noise,hardware,pipe wall roughness,flow field distribution will reduce precision of ultrasonic gas flowmeter in the actual measurement. And the use of multipath flowmeter can reduce the impact of these factors. On the basis of introducing the measurement principle and influence factors,the optimization and mathematical modeling of the installation position of the channel are studied by numerical integration method,and the weight coefficients are solved. It can improve the accuracy of measurement by calculating the average speed of the measuring surface. Under the support of the theory,the hardware system is planned and selected. Through the experimental measurements and data analysis,the measurement precision can meet the basic requirements,and it can provide some reference for the innovation of the next generation of gas ultrasonic flowmeter.