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System for detecting sulfur hexafluoride

A sulfur hexafluoride, high-temperature pyrolysis technology, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of insufficient overall performance of the instrument, unsatisfactory test results, complex decomposition products, etc., to improve stability and reliability. , good heating temperature, good stability

Active Publication Date: 2015-06-10
718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Problems solved by technology

Although this scheme realizes the cracking of sulfur hexafluoride, due to the use of a catalyst, the decomposition products are very complex, and the required target detection gas-sulfur dioxide content is small, but there are many interfering gases, which ultimately makes the overall performance of the instrument The performance is not good enough, and the test results are not ideal

Method used

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  • System for detecting sulfur hexafluoride

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Embodiment 1

[0026] Although the complete cracking temperature of sulfur hexafluoride is 3600°C, any substance has an initial cracking point. Partial cracking has already started in the case of the cracked gas, and the product contains sulfur dioxide. The sulfur dioxide produced by the partial cracking of sulfur hexafluoride can meet the detection requirements, and the concentration of sulfur dioxide in the cracked gas is different at each temperature point under different temperature conditions. .

[0027] Based on the above principles, the present invention provides a system for detecting sulfur hexafluoride, such as figure 1 As shown, the system includes high temperature cracking furnace, selective filter, SO 2 Sensors, air pumps, signal processing modules; the air intake sensor is installed at the inlet of the high temperature cracking furnace; among them, the high temperature cracking furnace, selective filter, SO 2 The sensor and the suction pump are connected sequentially through ...

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Abstract

The invention discloses a system for detecting sulfur hexafluoride, and belongs to the technical field of detection of sulfur hexafluoride. The system comprises a high-temperature cracking furnace, a selective filter, an SO2 sensor, an air pump and a signal processing module, wherein an air inflow sensor is arranged at an air inlet of the high-temperature cracking furnace; the high-temperature cracking furnace, the selective filter, the SO2 sensor and the air pump are connected sequentially through pipelines; the SO2 sensor is electrically connected with the signal processing module; and the air inflow sensor in the high-temperature cracking furnace is electrically connected with the signal processing module. According to the system, the concentration of SO2 produced by the system is high, interference gas is little, a catalyst is not required to be used, the operability is high, the cost is low, the analysis precision is high, and the lower limit of detection is low.

Description

technical field [0001] The invention relates to a system for detecting sulfur hexafluoride, belonging to the technical field of sulfur hexafluoride detection. Background technique [0002] Sulfur hexafluoride is used as insulating gas in substation circuit breakers (GIS), transformers, high-frequency cables and other equipment. At the same time, sulfur hexafluoride will produce a strong greenhouse effect. Therefore, the leakage analysis of sulfur hexafluoride Detection is not only the need of electric power safety, but also the need of environmental protection. At present, thermal cracking-electrochemical method is a good method for analyzing sulfur hexafluoride. This method uses catalytic heating to crack sulfur hexafluoride, and then uses an electrochemical sensor to detect the concentration of sulfur dioxide after cracking, and then Calculate the concentration of sulfur hexafluoride. The most prominent advantage of the analytical instrument using the pyrolysis-electroch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
Inventor 杨震夏高文卓王国庆杜海波周钧王祥滨苗英俊
Owner 718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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