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Method for measuring concentration of SOF2 in SF6 decomposition gas

A technology for decomposing gas and concentration, applied in the direction of color/spectral characteristic measurement, etc., can solve the problem of low gas concentration accuracy, achieve the effect of improving accuracy and simplifying the data processing process

Inactive Publication Date: 2014-07-02
STATE GRID CORP OF CHINA +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The present invention is to solve the problem in SF 6 When measuring decomposed gas, the measured SF 6 SOF in decomposition gas 2 The problem of low accuracy of gas concentration is now provided to measure SF 6 SOF in decomposition gas 2 method of concentration

Method used

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  • Method for measuring concentration of SOF2 in SF6 decomposition gas
  • Method for measuring concentration of SOF2 in SF6 decomposition gas

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Experimental program
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specific Embodiment approach 1

[0030] Specific implementation mode one: refer to figure 1 and figure 2 This embodiment will be specifically described, and the measurement of SF described in this embodiment 6 SOF in decomposition gas 2 The method of concentration is realized based on the following device, which includes: 18.5 μm laser 1, first condenser 2, sample cell 3, second condenser 4 and spectrometer 5;

[0031] The laser light emitted by the 18.5 μm laser 1 is transmitted to the sample pool 3 through the first condenser lens 2, and the sample pool 3 transmits the laser light to the second condenser lens 4, and the second condenser lens 4 transports the laser light to the incident slit of the spectrometer 5;

[0032] The incident slit of the spectrometer 5 is located at the focal point of the second condenser lens 4;

[0033] The sample cell 3 is used to fill the gas to be detected;

[0034] The measured SF 6 SOF in decomposition gas 2 The concentration method includes the following steps:

[0...

specific Embodiment approach 2

[0039] Specific embodiment two: this embodiment is the measurement of SF described in specific embodiment one 6 SOF in decomposition gas 2 The concentration method is further described. In this embodiment, after the laser light emitted by the 18.5 μm laser 1 passes through the first condenser lens 2, the output light obtained is parallel light.

[0040] Since the output light obtained from the 18.5 μm laser 1 passing through the first condenser lens 2 is parallel light, the distance between the first condenser lens 2 and the sample cell 3 can be adjusted appropriately without affecting the detection results.

specific Embodiment approach 3

[0041] Specific embodiment three: this embodiment is the measurement of SF described in specific embodiment one 6 SOF in decomposition gas 2 The concentration method is further described. In this embodiment, the spectrometer 5 is a maya2kPRO spectrometer.

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Abstract

The invention discloses a method for measuring the concentration of SOF2 in SF6 decomposition gas and relates to the technical field of photoelectric technical detection, aiming at solving the problem that the concentration of measured SOF2 gas in SF6 decomposition gas is low in precision in the process of measuring the SF6 decomposition gas. The method for measuring the concentration of SOF2 in SF6 decomposition gas comprises the following steps: acquiring a spectrum of atmosphere and a spectrum of SF6 decomposition gas, and finally acquiring the concentration of the SOF2 gas to be measured according to a beer's law. According to the method, the data processing process is simplified, so that the precision of the SOF2 gas concentration is improved by 50 percent.

Description

technical field [0001] The invention belongs to the technical field of photoelectric technology detection. Background technique [0002] Sulfur hexafluoride (SF 6 ) has excellent insulation and arc extinguishing performance and physical and chemical properties. As an insulating medium, it can not only reduce the size of the equipment, but also improve the insulation strength. With the increasing shortage of urban land, it is widely used in combined insulated appliances (GIS), circuit breakers (GCB ), transformers (GIT), cables (GIC), transmission pipelines (GIL) and other power transmission and distribution equipment. [0003] Pure SF 6 It is a colorless, non-toxic, odorless, non-flammable inert gas. It is not easy to chemically react with other substances when the temperature is 150°C or below. The decomposition products are little or not decomposed during normal operation. When SF 6 When an insulation hazard or fault occurs in the equipment, whether it is local, corona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
Inventor 鲁钢刘洋宋杲颜湘莲季严松苏镇西杨韧赵也姚强
Owner STATE GRID CORP OF CHINA