| 多声道超声流量计在弯管段安装的适应性研究 |
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| 引用本文： | 何存富,刘飞,张力新,吴斌,焦敬品.多声道超声流量计在弯管段安装的适应性研究[J].仪器仪表学报,2011,32(1). |
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| 作者姓名： | 何存富 刘飞 张力新 吴斌 焦敬品 |
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| 作者单位： | 1. 北京工业大学机械工程与应用电子技术学院,北京,100124
2. 唐山汇中威顿仪表有限公司,唐山,063020 |
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| 摘 要： | 针对在不具备直管段安装条件时,如何合理地选取多声道超声流量计的声道数量、测量断面及安装角度,本文从数学建模、误差分析、数值计算仿真与试验分析等方面,对DN400多声道超声流量计在弯管中的适应性进行了综合研究.利用高斯-雅克比数值积分法,给出了试验数据处理与数值仿真的数学模型,并分析了模型误差及横流的影响,提出利用双断面测量可减小横流的影响,并在数值仿真和试验中得到了验证.通过对声道数量、测量断面、安装角度进行数值仿真和试验表明,安装角度对低流速测量影响显著,最佳安装角应为0°;高流速测量应选用双断面,可根据测量精度的要求选用8声道或18声道.仿真结果与试验结果得到了很好的吻合,为进一步指导试验奠定了理论基础.
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| 关 键 词： | 超声流量计 多声道 数值仿真 弯管试验 声道分布 |
Adaptability study of multi-path ultrasonic flowmeter installed in a bend pipe |
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| He Cunfu,Liu Fei,Zhang Lixin,Wu Bin,Jiao Jingpin.Adaptability study of multi-path ultrasonic flowmeter installed in a bend pipe[J].Chinese Journal of Scientific Instrument,2011,32(1). |
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| Authors: | He Cunfu Liu Fei Zhang Lixin Wu Bin Jiao Jingpin |
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| Affiliation: | He Cunfu1,Liu Fei1,Zhang Lixin2,Wu Bin1,Jiao Jingpin1(1 College of Mechanical Engineering & Applied Electronic Technology,Beijing University of Technology,Beijing 100124,China,2 Tangshan Huizhong Instrumentation Co.Ltd.,Tangshan 063020,China) |
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| Abstract: | Aiming at the problem of how to select number of acoustic paths,measurement planes and installation angle when installing straight pipe is impossible,the performance of DN400 multi-path ultrasonic flowmeter for bend pipe measurement was studied from mathematical modeling,error analysis,numerical simulation and experiment analysis.According to Gauss-Jacobi numerical integration method,a mathematical model for simulation and experiment is given,and model errors and the effect of cross flow are analyzed.A two ... |
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| Keywords: | ultrasonic flowmeter multi-path simulation bend pipe experiment acoustic path distribution |
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