| 张易农,张克,宋振华,程耀华,彭静,瞿蒙,姚敏,郑睿.相关函数算法在超声导波计量管道内液体流速中的应用[J].声学技术,2017,36(4):353~356 |
| 相关函数算法在超声导波计量管道内液体流速中的应用 |
| Application of correlation function method to ultrasonic guided wave measurement of liquid flow rate in cylindrical pipeline |
| 投稿时间：2016-08-21 修订日期：2016-10-23 |
| DOI：10.16300/j.cnki.1000-3630.2017.04.010 |
| 中文关键词: 超声导波 热量表 相关函数法 |
| 英文关键词: ultrasonic guided wave ultrasonic heat meter correlation function |
| 基金项目: |
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| 摘要点击次数: 1562 |
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| 中文摘要: |
| 通过对超声导波技术在充液管道内流量计量的研究，提出了一种新的供热管路中热量表流量计量在线检测方法。试验中，因超声导波在充液管道内传播速度较快，为了准确地测量管道内液体流速对导波传播速度的影响，需要非常准确地提取导波的传播时间。分析了相关函数法在计算导波传播时间的应用原理，并通过理论分析和实验验证了相关函数法的准确性，为采用超声导波测量管道内液体流量提供理论基础。 |
| 英文摘要: |
| Ultrasonic guided wave propagation in fluid-filled cylindrical pipeline is investigated in order to put forward a new method of on-line flow measurement for calorimeter in heat-supply pipeline. The propagation speed of ultrasonic guided wave in liquid-filled pipeline is fast. In order to measure the influence of liquid flow rate on the propagation speed of ultrasonic guided wave, it is necessary to extract the propagation time of ultrasonic guided wave accurately. The application of correlation function method to calculating the propagation time of ultrasonic guided wave is introduced, and the accuracy is verified by numerical analysis and experiment. This provides a theoretical basis for applying ultrasonic guided wave to measuring the liquid flow rate in pipeline. |
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