Chromatography method for detecting SF6 decomposition products

A technology for chromatographic analysis and decomposition products, which is applied in the direction of analyzing materials, measuring devices, and material separation. It can solve the problems of similar retention times of target compounds, achieve the effects of increasing accuracy, ensuring safe operation, and improving accuracy.

Active Publication Date: 2015-01-07
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0006] The inventor invented a method of analyzing SF by using four valves and four columns in the early stage. 6 The method of decomposing products (hereinafter referred to as the previous invention), compared with the traditional chromatographic ana

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  • Chromatography method for detecting SF6 decomposition products
  • Chromatography method for detecting SF6 decomposition products
  • Chromatography method for detecting SF6 decomposition products

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Embodiment 1

[0044] A detection of SF 6 The chromatographic analysis method of the decomposition product adopts the chromatographic column combination to separate the components of the sample, and uses the valve group to control the cutting and component separation, and uses the first PDD detector 301 and the second PDD detector 302 to separate the separated samples. Carry out analysis and testing; wherein, the chromatographic column group includes at least six chromatographic columns, which are respectively Takey A column 101 (a stainless steel tube with a length of 2m and an inner diameter of 3mm, and a high molecular polymer with a particle size of 0.18mm to 0.25mm in the interior), Takey A B column 102 (a stainless steel tube with a length of 2m and an inner diameter of 3mm, and a polymer with a particle size of 0.18mm to 0.25mm inside), Takey C column 103 (a stainless steel tube with a length of 2m and an inner diameter of 3mm, and a particle size of 0.18mm~ 0.25mm polymer), the first...

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Abstract

The invention discloses a chromatography method for detecting the SF6 decomposition products. A sample is fed into a set of chromatographic columns to separate the components in the sample, a set of valves is adopted to cut the components and separately control the components, a first PDD detector and a second PDD detector are adopted to analyze and test the separated components individually; wherein the chromatographic column set at least comprises six chromatographic columns: a Takey A column, a Takey B column, a Takey C column, a first Porapak Q column, a second Porapak Q column, and a 13X molecule sieve column; the valve set comprises at least five multi-way valves: a first valve, a second valve, a third valve, a fourth valve, and a fifth valve. The provided method can overall and precisely carry out analysis on SF6 decomposition products, so that the inner operation situation of SF6 gas insulation equipment can be precisely determined so as to guarantee the safe operation of electrical equipment.

Description

technical field [0001] The invention relates to the field of analysis and detection, in particular to a method for detecting SF 6 Chromatographic analysis 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 corona discha...

Claims

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Application Information

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IPC IPC(8): G01N30/46
Inventor 王宇方华周永言
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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