Chinese Journal of Quantum Electronics, Volume. 41, Issue 6, 861(2024)
Research on infrared spectra simulation of sulfur hexafluoride in confined space
Figures & Tables(13)
Fig. 1. Schematic diagram of sulfur hexafluoride infrared telemetry in confined space
Fig. 2. Infrared brightness spectra of sulfur hexafluoride with CO2 superimposed (a), with H2O superimposed (b),with CO2 and H2O co-superimposed (c)
Fig. 3. Infrared brightness spectra of sulfur hexafluoride with superimposed background characteristics
Fig. 4. Infrared characteristic spectrum of sulfur hexafluoride under variable temperature difference
Fig. 5. Simulation device for infrared spectrum detection of sulfur hexafluoride gas in confined space
Fig. 7. Measured and simulated infrared spectra of sulfur hexafluoride at different background temperatures.(a) Measured infrared spectra at different background temperatures; (b) Comparison of measured and simulated spectra at 30 oC, 40 oC, 50 oC, 60 oC and 70 oC background temperatures
Fig. 8. Measured and simulated infrared spectra of sulfur hexafluoride at different gas concentrations.(a) Measured infrared spectra at different gas concentrations; (b) Comparison of measured and simulated spectra at concentrations of 20 mg/m3, 40 mg/m3, 60 mg/m3, 80 mg/m3 and 100 mg/m3
Table 1. The material and temperature parameters of the background simulation board
View tableView in ArticleTable 1. The material and temperature parameters of the background simulation board
Surface material Temperature / oC Latex coating 30, 40, 50, 60, 70 Device top finish (Acrylic polyurethane)
Table 2. Parameters of the atmosphere and sulfur hexafluoride concentration
View tableView in ArticleTable 2. Parameters of the atmosphere and sulfur hexafluoride concentration
Item Parameter Temperature(indoor air)/oC 25 Relative humidity/% 50 Concentrations of SF6 /(mg⋅m-3) 20, 40, 60, 80, 100
Table 3. Parameters of the FTIR spectrometer
View tableView in ArticleTable 3. Parameters of the FTIR spectrometer
Item Parameter Bands/μm 8-14 Resolution/cm-1 4 Cooling Stirling cooler NESR/(W⋅m-2) 3 × 10-9
Table 4. Brightness errors of infrared measured and simulated spectra at different background temperatures
View tableView in ArticleTable 4. Brightness errors of infrared measured and simulated spectra at different background temperatures
Background temperature/oC Brightness error/K 30 0.11 40 0.11 50 0.38 60 0.13 70 0.15
Table 5. Brightness errors of infrared measured and simulated spectra at different gas concentrations
View tableView in ArticleTable 5. Brightness errors of infrared measured and simulated spectra at different gas concentrations
Gas concentrations /(mg⋅m-3) Brightness error/K 20 0.25 40 0.45 60 0.25 80 0.42 100 0.35
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Yue ZHAO, Fengxiang MA, Anjing WANG, Dacheng LI, Fangxiao CUI, Jun Wu, Yangyu LI, Wangchao DONG. Research on infrared spectra simulation of sulfur hexafluoride in confined space[J]. Chinese Journal of Quantum Electronics, 2024, 41(6): 861
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Received: Nov. 7, 2022
Accepted: --
Published Online: Jan. 8, 2025
The Author Email: WANG Anjing (916609423@qq.com)
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