Hollow waveguide CO2 laser sensing system for rapid detection of trace sulfur hexafluoride (SF6) gas

Zhu, Yizhen; Li, Guishun; Liu, Sheng; Yu, Shuoying; Hou, Guangning; Zha, Zhipeng; Zhang, Qingtian; Liu, Shaohua; Jing, Chengbin; Chu, Junhao

doi:10.1016/j.infrared.2023.105045

Cited by 2 publications

(1 citation statement)

References 20 publications

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“…SF 6 insulating gas is extensively employed in high-voltage and extra-high-voltage power system equipment for its outstanding insulation capabilities and arc-quenching properties. − Nonetheless, elevated temperatures and localized discharges within gas-insulated equipment may trigger the decomposition of SF 6 into H 2 S, SO 2 , SOF 2 , and SO 2 F 2 . − The oxygen atoms in SO 2 , SOF 2 , and SO 2 F 2 mainly come from oxygen and water. Previous studies have indicated that the proportion of oxygen atoms provided by oxygen and water varies under different fault conditions. − The increase of SF 6 decomposition gases significantly reduces the insulation performance of equipment, exacerbates insulation deterioration, and poses a serious threat to the safety of power systems.…”

Section: Introductionmentioning

confidence: 99%

First-Principles Investigation of Transition Metal (Co, Rh, and Ir)-Modified WS₂ Monolayer Membranes: Adsorption and Detection of SF₆ Decomposition Gases

Zhang,

Zhou,

Jiang

et al. 2024

ACS Appl. Nano Mater.

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At high temperatures, the rapid and effective detection of SF 6 decomposition gas is a major challenge. Therefore, online detection of SF 6 decomposition gas at high temperatures for Gas Insulated Switchgear fault diagnosis is necessary. In this work, first-principles calculations are used to examine the adsorption and sensing properties of pristine WS 2 and transition metal Co, Rh, and Ir-modified WS 2 toward H 2 S, SO 2 , SOF 2 , and SO 2 F 2 . Our study delved into the adsorption energy and mechanisms of each system, exploring various aspects including adsorption energy, band gap, electron density, frontier orbital theory, conductivity, and recovery time. The findings indicate that the transition metal Co, Rh, and Irmodified WS 2 surface exhibits excellent adsorption capabilities for the decomposed gases. Co-WS 2 has good sensing performance for H 2 S, SO 2 , and SOF 2 and can achieve faster desorption for these three decomposed gases at high temperatures (598 K). SO 2 F 2 can be desorbed rapidly (0.65 s) from the surface of Rh-WS 2 at room temperature, and Rh-WS 2 has good selectivity for SO 2 F 2 . Interestingly, Ir-WS 2 remains difficult to desorb even at high temperatures for H 2 S (−2.642 eV), SO 2 (−2.260 eV), SOF 2 (−1.945 eV), and SO 2 F 2 (−2.841 eV) and can be used as a scavenger for these four gases. Therefore, the simulation experiments in this study aim to investigate the advantages of transition metal Co, Rh, and Ir-modified WS 2 for detecting SF 6 decomposition gases.

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Section: Introductionmentioning

confidence: 99%

First-Principles Investigation of Transition Metal (Co, Rh, and Ir)-Modified WS₂ Monolayer Membranes: Adsorption and Detection of SF₆ Decomposition Gases

Zhang,

Zhou,

Jiang

et al. 2024

ACS Appl. Nano Mater.

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Fabrication of PEEK Ag/AgI mid-infrared hollow fiber and transmission reliability study for CO2 laser radiation

Yu,

Liu,

Zhu

et al. 2024

Infrared Physics & Technology

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Hollow waveguide CO2 laser sensing system for rapid detection of trace sulfur hexafluoride (SF6) gas

Cited by 2 publications

References 20 publications

First-Principles Investigation of Transition Metal (Co, Rh, and Ir)-Modified WS₂ Monolayer Membranes: Adsorption and Detection of SF₆ Decomposition Gases

First-Principles Investigation of Transition Metal (Co, Rh, and Ir)-Modified WS₂ Monolayer Membranes: Adsorption and Detection of SF₆ Decomposition Gases

Fabrication of PEEK Ag/AgI mid-infrared hollow fiber and transmission reliability study for CO2 laser radiation

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Hollow waveguide CO2 laser sensing system for rapid detection of trace sulfur hexafluoride (SF6) gas

Cited by 2 publications

References 20 publications

First-Principles Investigation of Transition Metal (Co, Rh, and Ir)-Modified WS2 Monolayer Membranes: Adsorption and Detection of SF6 Decomposition Gases

First-Principles Investigation of Transition Metal (Co, Rh, and Ir)-Modified WS2 Monolayer Membranes: Adsorption and Detection of SF6 Decomposition Gases

Fabrication of PEEK Ag/AgI mid-infrared hollow fiber and transmission reliability study for CO2 laser radiation

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Product

Resources

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First-Principles Investigation of Transition Metal (Co, Rh, and Ir)-Modified WS₂ Monolayer Membranes: Adsorption and Detection of SF₆ Decomposition Gases

First-Principles Investigation of Transition Metal (Co, Rh, and Ir)-Modified WS₂ Monolayer Membranes: Adsorption and Detection of SF₆ Decomposition Gases