大口径宽波段激光发射通道的防尘方法

陈文韬; 高云国; 邵帅; 刘旭堂; 孙毅

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大口径宽波段激光发射通道的防尘方法

陈文韬, 高云国, 邵帅, 刘旭堂, 孙毅

文章导航 > 红外与激光工程 > 2015 > 44(10): 2918-2925

陈文韬, 高云国, 邵帅, 刘旭堂, 孙毅. 大口径宽波段激光发射通道的防尘方法[J]. 红外与激光工程, 2015, 44(10): 2918-2925.

引用本文:

陈文韬, 高云国, 邵帅, 刘旭堂, 孙毅. 大口径宽波段激光发射通道的防尘方法[J]. 红外与激光工程, 2015, 44(10): 2918-2925.

Chen Wentao, Gao Yunguo, Shao Shuai, Liu Xutang, Sun Yi. Dustproof method for large-diameter and wide-band laser emission pipe[J]. Infrared and Laser Engineering, 2015, 44(10): 2918-2925.

Citation:

Chen Wentao, Gao Yunguo, Shao Shuai, Liu Xutang, Sun Yi. Dustproof method for large-diameter and wide-band laser emission pipe[J]. Infrared and Laser Engineering, 2015, 44(10): 2918-2925.

大口径宽波段激光发射通道的防尘方法

陈文韬^1,2,
高云国¹,
邵帅¹,
刘旭堂^1,2,
孙毅^1,2

1.
中国科学院长春光学精密机械与物理研究所,吉林长春 130033;
2.
中国科学院大学,北京 100049

基金项目:

中国科学院长春光学精密机械研究所三期创新工程(057X22C050)

详细信息

作者简介:
陈文韬(1988-),男,博士生,主要从事光学精密仪器方面的研究。Email:cwt880229@163.com;高云国(1955-),男,研究员,博士生导师,主要从事光电仪器总体设计方面的研究。Email:gaoyunguo@163.com

陈文韬(1988-),男,博士生,主要从事光学精密仪器方面的研究。Email:cwt880229@163.com;高云国(1955-),男,研究员,博士生导师,主要从事光电仪器总体设计方面的研究。Email:gaoyunguo@163.com

中图分类号: O351.2

Dustproof method for large-diameter and wide-band laser emission pipe

1.
Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;
2.
University of Chinese Academy of Sciences,Beijing 100049,China

摘要: 针对大口径宽波段激光发射通道密封防护较难的问题,提出了正压净化通风密封方法。该方法利用送入内通道的干燥洁净的净化气流,排出原有空气并充满内通道,基于正压原理阻挡外界空气和微粒,实现发射通道的密封。借助计算流体力学软件Fluent对激光发射内通道的正压通风流场进行了连续相和离散相的数值模拟,发现正压通风方法形成的正压净化气流不仅可以阻挡外界空气,而且在小于4.71E-3 kg/m3的颗粒浓度范围内,净化气流对空气中各种粒径的尘埃颗粒也起到很大阻挡作用。另外,通过分析流场的气体折射率的非均匀分布发现,对于0.8~10.6 m波段范围的激光,正压通风引起的光程差约为0.32 m。正压通风实验的测量结果显示,颗粒浓度与仿真曲线变化趋势基本一致,证明了正压通风方法的有效性。
- 正压密封 /
- 数值模拟 /
- 大口径宽波段 /
- 激光发射通道
Abstract: In view of the problem that the seal protection for a laser emission system with large-diameter and wide-band is very difficult, the purification positive pressure ventilation seal method has been put forward. This method was to achieve the purpose of sealing by exhausting the original air and making the pipe full of purified and dry and clean air, so the air and particles from outside will be resisted based on the positive pressure principle. For the flow field of the positive pressure ventilation in laser emission pipe, the numerical simulation of the continuous phase and discrete phase has been made by the CFD software-Fluent, found that the purified positive pressure airflow formed by the positive pressure ventilation could resist the air backflow from outside, but also made a barrier function for the dust particle with kinds of sizes in the air, when the concentration was less than 4.71E-3 kg/m3. In addition, this paper found that the positive pressure ventilation flow caused a 0.32 m optical path difference when laser's band was within 0.8 -10.6 m,based on the analysis of refractive index in the pipe. Measurement results from the positive pressure ventilation experiments show that trends of vary of particle concentration and simulation curve are basically consistent, which demonstrates the effectiveness of the method of positive pressure ventilation.
- positive pressure seal /
- numerical simulation /
- large-diameter and wide-band /
- laser emission pipe

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大口径宽波段激光发射通道的防尘方法

1. 中国科学院长春光学精密机械与物理研究所,吉林长春 130033;

2. 中国科学院大学,北京 100049

作者简介:
陈文韬(1988-),男,博士生,主要从事光学精密仪器方面的研究。Email:cwt880229@163.com;高云国(1955-),男,研究员,博士生导师,主要从事光电仪器总体设计方面的研究。Email:gaoyunguo@163.com

陈文韬(1988-),男,博士生,主要从事光学精密仪器方面的研究。Email:cwt880229@163.com;高云国(1955-),男,研究员,博士生导师,主要从事光电仪器总体设计方面的研究。Email:gaoyunguo@163.com

收稿日期: 2015-02-05
修回日期: 2015-03-10
刊出日期: 2015-10-25

基金项目:

中国科学院长春光学精密机械研究所三期创新工程(057X22C050)

中图分类号: O351.2

关键词:

摘要: 针对大口径宽波段激光发射通道密封防护较难的问题,提出了正压净化通风密封方法。该方法利用送入内通道的干燥洁净的净化气流,排出原有空气并充满内通道,基于正压原理阻挡外界空气和微粒,实现发射通道的密封。借助计算流体力学软件Fluent对激光发射内通道的正压通风流场进行了连续相和离散相的数值模拟,发现正压通风方法形成的正压净化气流不仅可以阻挡外界空气,而且在小于4.71E-3 kg/m3的颗粒浓度范围内,净化气流对空气中各种粒径的尘埃颗粒也起到很大阻挡作用。另外,通过分析流场的气体折射率的非均匀分布发现,对于0.8~10.6 m波段范围的激光,正压通风引起的光程差约为0.32 m。正压通风实验的测量结果显示,颗粒浓度与仿真曲线变化趋势基本一致,证明了正压通风方法的有效性。

English Abstract

Dustproof method for large-diameter and wide-band laser emission pipe

1. Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;

2. University of Chinese Academy of Sciences,Beijing 100049,China

Received Date: 2015-02-05
Rev Recd Date: 2015-03-10
Publish Date: 2015-10-25

Keywords:

Abstract: In view of the problem that the seal protection for a laser emission system with large-diameter and wide-band is very difficult, the purification positive pressure ventilation seal method has been put forward. This method was to achieve the purpose of sealing by exhausting the original air and making the pipe full of purified and dry and clean air, so the air and particles from outside will be resisted based on the positive pressure principle. For the flow field of the positive pressure ventilation in laser emission pipe, the numerical simulation of the continuous phase and discrete phase has been made by the CFD software-Fluent, found that the purified positive pressure airflow formed by the positive pressure ventilation could resist the air backflow from outside, but also made a barrier function for the dust particle with kinds of sizes in the air, when the concentration was less than 4.71E-3 kg/m3. In addition, this paper found that the positive pressure ventilation flow caused a 0.32 m optical path difference when laser's band was within 0.8 -10.6 m,based on the analysis of refractive index in the pipe. Measurement results from the positive pressure ventilation experiments show that trends of vary of particle concentration and simulation curve are basically consistent, which demonstrates the effectiveness of the method of positive pressure ventilation.