激光诱导击穿光谱法测量煤粉流的控制因素

陈世和; 陆继东; 张博; 陈华忠; 姚顺春; 李军; 潘刚; 张曦

doi:10.3788/OPE.20132107.1651

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激光诱导击穿光谱法测量煤粉流的控制因素

现代应用光学 | 更新时间：2020-08-12

- 激光诱导击穿光谱法测量煤粉流的控制因素
- Controllable factors in detection of pulverized coal flow with LIBS
- 光学精密工程 2013年21卷第7期页码：1651-1658
- 作者机构：
  
  1. 广东电网公司电力科学研究院,广东广州,510600
  2. 华南理工大学电力学院,广东广州,510640
- 作者简介：
- 基金信息：
  
  煤粉颗粒流的激光诱导击穿光谱特性及其测量方法研究();LIBS直接检测流动状态煤粉特性的关键技术研究()
- DOI：10.3788/OPE.20132107.1651
  中图分类号： O433.5+4
- 收稿日期：2013-01-07，
  
  修回日期：2013-04-14，
  
  网络出版日期：2013-07-15，
  
  纸质出版日期：2013-07-15
- 稿件说明：
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陈世和陆继东张博陈华忠姚顺春李军潘刚张曦. 激光诱导击穿光谱法测量煤粉流的控制因素[J]. 光学精密工程, 2013,21(7): 1651-1658

. Controllable factors in detection of pulverized coal flow with LIBS[J]. Editorial Office of Optics and Precision Engineering, 2013,21(7): 1651-1658
陈世和陆继东张博陈华忠姚顺春李军潘刚张曦. 激光诱导击穿光谱法测量煤粉流的控制因素[J]. 光学精密工程, 2013,21(7): 1651-1658 DOI： 10.3788/OPE.20132107.1651.

. Controllable factors in detection of pulverized coal flow with LIBS[J]. Editorial Office of Optics and Precision Engineering, 2013,21(7): 1651-1658 DOI： 10.3788/OPE.20132107.1651.

摘要

用激光诱导击穿光谱（LIBS）法直接检测煤粉流时需要对主要控制因素进行优化，本文采用正交实验法考察了3个主要控制因素：功率密度、积分延迟时间和单位截面流量对LIBS测量煤粉流的影响。选用粒径小于0.2 mm的煤粉作为实验样品进行了统计分析和方差分析。结果显示：在实验所选取的参数范围内，功率密度、积分延迟时间对有效激发率有显著影响，单位截面流量的影响程度最低。优化后的方案为：功率密度9.41011 W/cm2，积分延迟时间1 500 ns，煤粉流量根据经济性原则在合理范围内选取。得到的结果表明该方法可用于指导煤粉流的实际在线测量。

Abstract

It is necessary to optimize operable factors in measurement of pulverized coal flow by Laserinduced Breakdown Spectroscopy（LIBS）. Therefore

this paper investigated the effects of three main operable factors， irradiance

integration delay time and the rate of flow per unit area on the measurement of pulverized coal flow by LIBS based on orthogonal experiments. Pulverized coal was chosen for the experimental sample and the statistic analysis and variance analysis were performed. Experiment indicates that the irradiance and integration delay time are two remarkable factors for the effective excitation rate and the following is the rate of flow per unit area. The optimum parameters of control from the experiment are the irradiance of 9.41011 W/cm2

the integration delay time of 1 500 ns， and the rate of flow is selected reasonably based on economy principles. The results obtained demonstrate that the method can direct the practical measurement of pulverized coal flows in real time.

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references

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