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Automatic constant temperature type photoacoustic detection device for SF6 decomposed components and experiment method thereof

A technique for decomposing sulfur hexafluoride and its components, which is applied in measuring devices, chemical instruments and methods, cleaning methods and utensils, etc. It can solve the problem of the stability of photoacoustic detection devices, the accuracy and precision of detection cannot be guaranteed, Problems such as not being able to automatically maintain the temperature and the influence of the ambient temperature

Inactive Publication Date: 2012-06-27
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main disadvantage of this patent is that the infrared photoacoustic spectroscopy system it uses is an open device, which cannot be automatically kept at a constant temperature, and is greatly affected by the ambient temperature during actual on-site detection. The stability of the photoacoustic detection device, the accuracy of detection and Accuracy not guaranteed, not suitable for online monitoring

Method used

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  • Automatic constant temperature type photoacoustic detection device for SF6 decomposed components and experiment method thereof
  • Automatic constant temperature type photoacoustic detection device for SF6 decomposed components and experiment method thereof
  • Automatic constant temperature type photoacoustic detection device for SF6 decomposed components and experiment method thereof

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Effect test

Embodiment 1

[0044]The switching power supply 29 is a commercially available product, the output voltage is 60V, and the maximum current is 5A. The input end of the switching power supply 29 is connected to the power supply of 220V / 50Hz through a wire, and the positive pole of the output end of the switching power supply 29 is connected to the power supply through a wire. After the positive pole of the output end of the solid state relay 30 is connected, the negative pole of the output end of the solid state relay 30 is connected to the positive terminal of the annular heating belt 32 through a wire, and the negative pole of the output end of the switching power supply 29 is connected to the annular heating belt 32 through a wire. The heating belt 32 is connected to the negative terminal, and is used to provide DC power for the annular heating belt 32 installed on the outer surface of the photoacoustic cell 16 so as to heat the photoacoustic cell 16 .

[0045] The solid state relay 30 is a ...

Embodiment 2

[0052] Example 3

Embodiment 3

[0054] Example 4

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Abstract

The invention which relates to an automatic constant temperature type photoacoustic detection device for SF6 decomposed components and an experiment method thereof belongs to the technical field of SF6 gas insulation device partial discharge online monitoring. The device is characterized in that an automatic constant temperature system is arranged in present infrared photoacoustic spectrum monitoring systems; and according to the method, the device is utilized to detect the SF6 gas partial discharge decomposed components in a GIS (gas insulated substation) simulation element under automatic preset temperature constancy conditions. According to the invention, the influence of external environment can be eliminated, the gas components of SO2, CO2, CF4, SO2F2, SOF2 and the like with the concentrations of low to 0.01muL / L can be effectively detected, the accuracy, the detection precision and the stability are high, and performances of a solid state relay are stable, so the long-term effective working of the automatic constant temperature system can be guaranteed. The device which can be widely applied to the field of the SF6 gas insulation equipment partial discharge online monitoring is especially suitable for detecting the SF6 gas partial discharge decomposed components in the GIS.

Description

technical field [0001] The present invention belongs to sulfur hexafluoride (SF 6 ) On-line monitoring technical field of partial discharge (PD) of gas-insulated electrical equipment, specifically related to SF in GIS 6 An automatic constant temperature photoacoustic spectroscopic detection device and experimental method for components decomposed under partial discharge. Background technique [0002] Gas-insulated switchgear (GIS), in SF 6 As an insulating medium, gas has the advantages of high dielectric strength, stable operation, small footprint and small maintenance workload. It is more and more widely used in power systems, especially in the construction and renovation of large and medium-sized cities. However, judging from the operation situation in recent years, there have been many problems in the use of GIS at home and abroad, and the inevitable defects inside it will cause faults and continue to expand with the increase of operating time, among which the outstand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/35G01N21/01G01M3/26B08B9/08G01N21/17G01N21/3504
Inventor 唐炬裘吟君张晓星范敏袁静帆刘岩
Owner CHONGQING UNIV
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