Fourier infrared spectrum analysis method for SF6 (sulfur hexafluoride) decomposition product

A technology for analyzing and decomposing products by infrared spectroscopy, which is applied in the direction of material analysis, material analysis, and measuring devices by optical means, which can solve problems such as undetectable and strong corrosion, and achieve the effect of ensuring safe operation.

Inactive Publication Date: 2014-02-26
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0006] The traditional chromatographic analysis method uses Gaspro capillary column single column to analyze SF 6 The decomposition products were separated and tested, using TCD and FDP serial detectors for SF 6 The decomposition products are analyzed. The principle of the traditional chromatographic analysi

Method used

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  • Fourier infrared spectrum analysis method for SF6 (sulfur hexafluoride) decomposition product
  • Fourier infrared spectrum analysis method for SF6 (sulfur hexafluoride) decomposition product
  • Fourier infrared spectrum analysis method for SF6 (sulfur hexafluoride) decomposition product

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Embodiment 1

[0027] a SF 6 The Fourier transform infrared spectroscopic analysis method of decomposition product, comprises the following steps:

[0028] combine figure 1As shown, the sample gas is introduced into the absorption chamber 130 in the Fourier transform infrared spectrophotometer 100 through the gas path to perform Fourier transform infrared spectroscopic analysis, and the excess sample gas will be automatically discharged from the Fourier transform through the sample gas release valve 120. Infrared spectrophotometer 100, analysis parameters are: detector: photoconductive detector; pressure balance: 0.1mbar; refrigerant: liquid nitrogen 400mL, temperature -196°C. The Fourier transform infrared spectrophotometer 100 is provided with an infrared light source 140, and the absorption chamber 130 is made of stainless steel with a length of 10 cm (that is, the distance between the two side walls of the absorption chamber 130 provided with the KBr window), and its side The first KBr...

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Abstract

The invention discloses a Fourier infrared spectrum analysis method for a SF6 (sulfur hexafluoride) decomposition product. The method is characterized by comprising the following steps: introducing sample gas into an absorption cavity of a Fourier infrared spectrum spectrophotometer for performing Fourier infrared spectrum analysis, wherein the analysis parameters are that a detector is a photoconductive detector, the pressure balance is 0.1+/-0.01mbar, a refrigerant is 400+/-1mL and the temperature is 196 DEG C below zero+/-1 DEG C. According to the method, the problems that HF, SF4, S2F10 and SiF4 in the SF6 decomposition product cannot be accurately analyzed in the conventional technical means can be effectively solved, the decomposition products such as SO2, HF, SF4, SOF2, SOF4, SO2F2, S2F10, SiF4, CF4, CO and COS in the SF6 are accurately analyzed, the internal operating conditions of SF6 gas insulated equipment are effectively judged, the failure of electrical equipment is successfully judged, and the safety operation of the electrical equipment is guaranteed.

Description

technical field [0001] The invention relates to the field of analysis and detection, in particular to a SF 6 Fourier transform infrared spectroscopic analysis method of decomposition products. Background technique [0002] Sulfur hexafluoride (SF 6 ) is a colorless, odorless, non-toxic, non-flammable and chemically stable synthetic gas at normal temperature and pressure. SF 6 The molecular structure of monosulfide and polyfluorine is extremely strong electronegativity, endowing it with excellent electrical insulation and arc extinguishing properties. Currently, SF 6 As a new generation of insulating medium, it is widely used in high-voltage and ultra-high-voltage electrical equipment. Refill SF 6 The electrical equipment occupies a small area, the operating noise is small, and there is no risk of fire, which greatly improves the safety and reliability of electrical equipment operation. [0003] SF 6 Under the action of overheating, electric arc, electric spark and co...

Claims

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Application Information

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IPC IPC(8): G01N21/3504
Inventor 王宇李丽周永言汤龙华姚唯建
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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