多元热流体激光检测及杂光抑制光路

吕妍; 王迪; 王志国; 王明吉; 李栋

doi:10.3788/CO.20191202.0310

Volume 12 Issue 2

Apr. 2019

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Article Contents

Chinese Optics > 2019 > 12(2): 310-320.

LV Yan, WANG Di, WANG Zhi-guo, WANG Ming-ji, LI Dong. Optical path of laser detection and stray light suppression for multiple thermal fluids[J]. Chinese Optics, 2019, 12(2): 310-320. doi: 10.3788/CO.20191202.0310

Citation:

LV Yan, WANG Di, WANG Zhi-guo, WANG Ming-ji, LI Dong. Optical path of laser detection and stray light suppression for multiple thermal fluids[J]. Chinese Optics, 2019, 12(2): 310-320. doi: 10.3788/CO.20191202.0310

Citation:

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Optical path of laser detection and stray light suppression for multiple thermal fluids

doi: 10.3788/CO.20191202.0310

LV Yan^{1, 2
,},
WANG Di^{1, 2
,
,},
WANG Zhi-guo²,
WANG Ming-ji¹,
LI Dong²

1.
School of Electronic Science, Northeast Petroleum University, Daqing 163318, China
2.
School of Civil Engineering and Architecture, Northeast Petroleum University, Daqing 163318, China

Funds:

Project Funded by China Postdoctoral Science Foundation 2018T110267

PetroChina Innovation Foundation 2018D-5007-0608

Guide Innovation Fund of Northeast Petroleum University 2018YDL-07

Development and Fostering Project of Heilongjiang Education Department TSTAU-R2018018

More Information

Corresponding author: E-mail:15776598521@163.com
Received Date: 09 Apr 2018
Rev Recd Date: 05 Jun 2018
Publish Date: 01 Apr 2019

Abstract

Abstract

In order to attain highlysensitive on-line laser detection for the component content of multiple thermal fluids, an open-path reflection array optical cell with longer absorption path-length is designed based on the principles of multiple reflection and absorption spectroscopy. The influences of beam divergence and alignment error on receiving efficiency under different beam diameters are investigated. In addition, in order to suppress the interference of the stray radiation produced by the high temperature inner wall of steam injection pipeline to the receiving signal, a new type of stray light suppression structure is introduced. The results show that when the reflector coating is silver and optical window material is fused silica, the best reflection time is 42 and the effective absorption path length is 220 cm. For measuring laser with different beam diameters, the attenuationtrend and amplitude of the system receiving efficiency are similar with theincrease of divergence angle and alignment error. When the off-field angle is 5°, the PST is 1.21×10^-7. The effectiveness of the stray light suppression structure is proven by the experiment of suppression to heat radiation from high temperature pipeline.
- optical design,
- multiple thermal fluids,
- laser detection,
- absorption path-length,
- stray lights suppression

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References(19)

References

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