摘要
为考察时差式超声流量计的声道覆盖率、布置方式对测量结果准确性的影响,对立体声道的平面声道模型进行了特性分析,推导出不同覆盖方式下覆盖面积的计算公式、声道段总数范围的确定公式以及声道段中心线至管道横截面中心距离的计算公式,并进行平面声道模型参数的设计.实例计算结果表明,文中提出的时差式超声流量计立体声道的平面声道模型计算方法是有效的.
In order to reveal the effects of coverage and arrangement of ultrasonic track on the measurement accuracy of transit-time ultrasonic flowmeter,the characteristics of the 2D ultrasonic track model of 3D ultrasonic track were analyzed,and some formulas were deduced to calculate the coverage area in different covering modes,the number of track segments as well as the distance between the centerlines of track segments and the center of pipe crosssec-tion,respectively.Moreover,a parameter design of the 2D ultrasonic track model was conducted.The results of case study indicate that the calculation method of the 2D ultrasonic track model of 3D ultrasonic track is effective.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第1期1-5,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
国家火炬计划产业化示范项目(2012GH051675)
广州市科技计划项目(2013J4400064)
国家科技型中小企业技术创新基金资助项目(12C26214405145)
关键词
超声流量计
声道覆盖率
平面声道模型
声道段数
ultrasonic flowmeter
sound track coverage
2D ultrasonic track model
sound track segment number
