光声光谱检测变压器油中气体的共振光声池研究

发布时间：2018-05-06 11:43

本文选题：共振光声池 + 光声光谱(PAS)　；参考：《高压电器》2014年02期

【摘要】：气体光声光谱技术是一种新型的微量气体检测技术,能很好地应用于变压器油中溶解气体检测。光声池是光声光谱监测系统中的核心部分,是表征系统灵敏度的重要因素。笔者模拟分析了气体光声信号分布及谐振腔几何尺寸与表征光声池性能的特性参数的量化关系,设计制作了两个不同几何结构参数的共振光声池,实验研究了光声池响应特性,实验结果比较得出谐振腔长120 mm、半径3 mm的不锈钢光声池表现出比较优越的气体响应性能,并对变压器油中溶解的主要特征气体C2H2进行了光声探测。理论与实验结果为气体光声光谱在线监测系统的完善及高灵敏度光声池的优化设计提供了技术支持与理论参考。
[Abstract]:Gas photoacoustic spectroscopy is a new kind of micro gas detection technology, which can be used to detect dissolved gas in transformer oil. The photoacoustic cell is the core part of the photoacoustic spectrum monitoring system and an important factor to characterize the sensitivity of the system. In this paper, the distribution of gas photoacoustic signals and the quantitative relationship between the geometrical size of the resonator and the characteristic parameters of the photoacoustic cell are simulated and analyzed. Two resonant photoacoustic cells with different geometric structure parameters are designed and fabricated, and the response characteristics of the photoacoustic cell are experimentally studied. The experimental results show that the stainless steel photoacoustic cell with a resonator length of 120mm and a radius of 3 mm has superior gas response performance. The main characteristic gas C2H2 dissolved in transformer oil has been detected by photoacoustic method. The theoretical and experimental results provide technical support and theoretical reference for the improvement of on-line monitoring system of gas photoacoustic spectrum and the optimization design of high-sensitivity photoacoustic cell.
【作者单位】：国网四川省电力公司眉山供电公司;重庆大学输配电装备及系统安全与新技术国家重点实验室;
【基金】：国家高技术研究发展计划(863计划)(2009AA04Z416)~~
【分类号】：TH744.4

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