Experimental study on non-contact flue gas flow measurement based on acoustic technology

CHEN Dong; REN Siyuan; SHEN Guoqing; YANG Jiedong; LIU Weilong; AN Liansuo

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Experimental study on non-contact flue gas flow measurement based on acoustic technology

Thermal Power Generation Issue 12, (2017)

更新时间：2025-09-28

- Experimental study on non-contact flue gas flow measurement based on acoustic technology
- 作者机构：
  
  1. 华北电力大学能源动力与机械工程学院,北京,102206
  2. 南京农业大学工学院,南京,210031
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK31
- Published Online：04 January 2018，
  
  Published：2017
- 稿件说明：
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CHEN Dong, REN Siyuan, SHEN Guoqing, et al. Experimental study on non-contact flue gas flow measurement based on acoustic technology[J]. Thermal Power Generation, 2017, (12).
DOI：

CHEN Dong, REN Siyuan, SHEN Guoqing, et al. Experimental study on non-contact flue gas flow measurement based on acoustic technology[J]. Thermal Power Generation, 2017, (12). DOI：

摘要

在不影响烟气管道原有流场的前提下，基于声学技术对电站锅炉烟气流速进行了非接触式实验测量。实验采用扫频信号作为信号源，声源和声音传感器分别布置在流道上下2个端面，倾斜一定角度并呈一条直线；根据时差法求气体流速原理，分别运用基本互相关算法和基于相位变换（PHAT）加权广义互相关算法对声波飞渡时间进行测量；比较不同算法和不同倾斜角的测量结果，找到最合适的倾斜角度

并与涡街流量计测得的结果进行比较，验证其可行性。结果表明：非接触式声波法可以在不影响管道流动的情况下准确测得烟气流速；PHAT加权广义互相关算法在测量准确性和灵敏度方面明显优于基本互相关算法；非接触式声波法声源扫频频率5 000~8 000 Hz、倾斜角20°时测量结果最准确，精确度高。

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