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cf 4 Gas concentration detection method, device, equipment and accuracy verification system

A technology for gas concentration detection and gas concentration, applied in measuring devices, color/spectral characteristic measurement, instruments, etc., can solve problems such as background peak interference, difficult quantitative analysis, high sensitivity of chromatography and mass spectrometry, and achieve the elimination of measurement errors, Improved stability and improved concentration measurement accuracy

Active Publication Date: 2022-06-17
STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST +1
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Problems solved by technology

Among them, chromatography and mass spectrometry have high sensitivity, but are not suitable for on-site detection of high-voltage combined electrical appliances. Infrared spectroscopy has a comprehensive range of detection methods, but is easily interfered by background peaks and is difficult to quantitatively analyze.

Method used

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  • cf <sub>4</sub> Gas concentration detection method, device, equipment and accuracy verification system
  • cf <sub>4</sub> Gas concentration detection method, device, equipment and accuracy verification system
  • cf <sub>4</sub> Gas concentration detection method, device, equipment and accuracy verification system

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Embodiment Construction

[0058] In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0059] The terms "first", "second", "third", "fourth", etc. in the description and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. . Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of ste...

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Abstract

This application discloses a CF 4 Gas concentration detection method, device, equipment and accuracy verification system. Wherein, the method includes obtaining the infrared detector collected passing through the CF to be measured 4 The infrared light in front of the gas measures the incident signal and the infrared light reference incident signal, and passes through the CF to be measured 4 The infrared light measurement signal and infrared light reference signal after the gas; according to the light intensity value of the infrared light measurement incident signal, infrared light reference incident signal, infrared light measurement signal, and infrared light reference signal, the CF to be measured is determined 4 The absorption rate of the gas; the CF at the corresponding time point is obtained according to the inversion of the absorption rate at multiple time points 4 Gas concentration, as the measured CF 4 The time series concentration information of the gas; finally, the multivariate gray model is used to predict and analyze the time series concentration information, and the CF to be measured is obtained 4 The concentration information of the gas in the preset time period in the future realizes the analysis of SF in gas-insulated high-voltage combined electrical appliances 6 Decomposition product CF 4 The detection of gas concentration is conducive to improving the stability of gas-insulated high-voltage combined electrical appliances.

Description

technical field [0001] The present application relates to the technical field of gas concentration detection, in particular to a CF4 gas concentration detection method, device, equipment and accuracy verification system. Background technique [0002] With the rapid development of power technology, electrical equipment is ubiquitous in all walks of life and in daily life, and the reliability and safety of electrical equipment have become extremely important. Sulfur hexafluoride (SF6) gas has strong electronegativity due to its regular octahedral molecular structure, and it is easy to combine with free electrons to form negative ion molecules; It combines with SF6 negative ions to generate neutral particles, reduces the number of positive ions in the discharge area, and promotes arc extinguishing. Therefore, it is widely used in gas-insulated high-voltage combined electrical appliances as an excellent insulating medium and arc extinguishing medium. [0003] With the developme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/3504G01N21/31
CPCG01N21/3504G01N21/31G01N21/314G01N2021/3196G01N2021/3148
Inventor 张施令姚强谢文刚苗玉龙
Owner STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST
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