Measurement of particle concentration of gas-solid two-phase flow in pipe based on acoustic emission

AN Liansuo; LIU Weilong; CHEN Dong; YANG Jiedong; SHEN Guoqing; ZHANG Shiping

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Measurement of particle concentration of gas-solid two-phase flow in pipe based on acoustic emission

Thermal Power Generation Issue 10, (2017)

更新时间：2025-09-28

- Measurement of particle concentration of gas-solid two-phase flow in pipe based on acoustic emission
- 作者机构：
  
  华北电力大学国家火力发电工程技术研究中心,北京,102206
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK224
- Published Online：01 November 2017，
  
  Published：2017
- 稿件说明：
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AN Liansuo, LIU Weilong, CHEN Dong, et al. Measurement of particle concentration of gas-solid two-phase flow in pipe based on acoustic emission[J]. Thermal Power Generation, 2017, (10).
DOI：

AN Liansuo, LIU Weilong, CHEN Dong, et al. Measurement of particle concentration of gas-solid two-phase flow in pipe based on acoustic emission[J]. Thermal Power Generation, 2017, (10). DOI：

摘要

为了实现管道内气固两相流颗粒相含量的在线测量，通过安装在管道截面网状结构上的传感器对管道内不同含量的气固两相流的声发射信号进行采集，通过集合经验模分解(EEMD)算法对采集到的信号进行10层分解，比较本征模函数(IMF)分量相对于原始信号的贡献率及其频域特性，建立了颗粒相含量与各个IMF分量之间的线性关系，并对该线性关系进行实验验证。结果表明：在给料量在4~20 g/s范围内，IMF1、IMF2和IMF3都能很好反映原始信号的某些频率内的特性，可以用来建立颗粒相含量与声发射信号之间的关系；其拟合函数误差均小于10%，平均误差小于5%，与小波包分析法进行对比，EEMD方法得到的结果更为精确。采集到的信号经EEMD分解后的3个分量，均可用以监测气固两相流中的颗粒相含量。

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