Detection Method of Eco-friendly Gas C5F10O/N2 Decomposition Components Based on FTIR Technology

被引：0
|
作者：
Hu F. [1 ]
Tian S. [1 ,2 ]
Zhang X. [1 ,2 ]
Fang Y. [1 ]
Wang Y. [1 ]
Yang Z. [1 ]
机构：
[1] Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan
[2] Xiangyang Industrial Institute of Hubei University of Technology, Xiangyang High-tech Industrial Development Zone, Xiangyang
来源：
Gaodianya Jishu/High Voltage Engineering | 2023年 / 49卷 / 06期
基金：
中国国家自然科学基金;
关键词：
C5F10O/N2 mixed gas; infrared spectroscopy; qualitative analysis; quantitative analysis; thermal decomposition;
D O I：
10.13336/j.1003-6520.hve.20221212
中图分类号：
学科分类号：
摘要：
In recent years, C5F10O has attracted wide attention because its excellent insulating properties and environmental protection properties. C5F10O gas mixture has begun to apply in equipment such as gas insulation ring network cabinets. The research on the detection method of the decomposition components of the C5F10O mixed gas is of great significance for the fault diagnosis and operation and maintenance of equipment. Consequently, taking the thermal decomposition products of C5F10O/N2 mixed gas as the research object, we built a Fourier transform infrared spectroscopy(FTIR) platform. By using the FTIR technology, we explored the types of C5F10O/N2 mixed gas pyrolysis components, and compared them with gas chromatography mass spectrometry(GCMS) detection results to determine the feasibility of FTIR to detect the decomposition components of mixed gas. Through FTIR detection and analysis, it is determined that the decomposition group after pyrolysis of C5F10O/N2 contain CF3H, C3F6, C3F7H, CO, CO2 and CH4 gases. The absorption spectra of CF3H, C3F6, and C3F7H are analyzed, and the concentration calibration model is established. It is confirmed that the detection method of FTIR technology can be adopted to quantitatively analyze CF3H, C3F6 and C3F7H gases in the bands of 1130~1170, 1020~1050 and 890~930 cm–1, respectively. The obtained concentrations of CF3H, C3F6 and C3F7H are 21.34×10–6, 27.39 ×10–6, and 7.78×10–6, respectively, which are similar to the detection results of GCMS at 20.88×10–6, 27.88×10–6, and 7.62×10–6. The research in this paper can provide a reference for the detection of decomposed gas in the overheating fault of C5F10O/N2 mixed gas insulation equipment. © 2023 Science Press. All rights reserved.
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页码：2615 / 2624
页数：9
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