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Device and method for detecting acidity of sulfur hexafluoride gas

A technology of sulfur hexafluoride gas and detection devices, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of electrical equipment safety and service life impact, time-consuming, complicated process, etc., and achieve fast speed and absorption The effect of complete process and increased solubility

Active Publication Date: 2015-07-29
STATE GRID CORP OF CHINA +3
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Problems solved by technology

[0002] Sulfur hexafluoride gas has been widely used in electrical equipment due to its excellent electrical insulation and arc extinguishing performance. The production process of sulfur hexafluoride in the prior art will inevitably mix acid and acidic substances in the gas. It has a great impact on the safety and service life of electrical equipment
In view of this, the acidity of sulfur hexafluoride gas is a key indicator for the quality control of industrial sulfur hexafluoride and sulfur hexafluoride gas in operation. The traditional detection method uses a conical flask to absorb the gas under normal pressure, which needs to be repeated at least three times to ensure complete absorption. Moreover, the color change of the titration end point is judged by the naked eye, and the error of the parallel test is large; for the accuracy of the test, it is generally necessary to conduct multiple tests to obtain the average value, the process is complicated and takes a lot of time

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  • Device and method for detecting acidity of sulfur hexafluoride gas

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Embodiment Construction

[0020] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0021] see figure 1 The sulfur hexafluoride gas acidity detection device of the present invention comprises a gas absorption cell 1 and a pH sensor 2, the gas absorption cell 1 is an elongated structure and is vertically arranged to optimize the absorption effect of sulfur hexafluoride gas, and the pH sensor 2 side Standing on the side wall of the gas absorption cell 1 and its signal probe 3 is located in the gas absorption cell 1 , preferably, the pH sensor 2 forms an included angle of 60° with the horizontal plane.

[0022] The bottom of the gas absorption cell 1 is provided with a liquid outlet 4, an air inlet 5 and a plurality of automatic sampling ports, and the top is provided with a manual sampling port 6 and an exhaust port 7, and a pressure sensor is installed beside the exhaust port 7 8. Realize the absorption of acid gas in su...

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Abstract

The invention discloses a device and method for detecting the acidity of sulfur hexafluoride gas, wherein the detecting device comprises a gas absorption cell and a pH sensor; the signal probe of the pH sensor is positioned in the gas absorption cell; a liquor outlet, a gas inlet and a plurality of automatic sample inlets are formed in the bottom of the gas absorption cell; a manual sample inlet and a gas outlet are formed in the top of the gas absorption cell; a pressure sensor is mounted beside the gas outlet; electromagnetic valves are respectively arranged between the liquor outlet and the gas inlet, the automatic sample inlets and the manual sample inlet, the gas outlet and the gas absorption cell. The device and method realize the quick absorption of the acidic materials in sulfur hexafluoride gas; the pH sensor is used to achieve instrumentation, so that the finish judgment with pure naked eyes in a titration process is avoided, the testing time is remarkably reduced, the accuracy of the test is significantly improved, the safe operation and supervision of aeration electrical equipment are powerfully guaranteed.

Description

technical field [0001] The invention relates to a device and method for detecting the acidity of sulfur hexafluoride gas, belonging to the technical field of electric power system detection. Background technique [0002] Sulfur hexafluoride gas has been widely used in electrical equipment due to its excellent electrical insulation and arc extinguishing performance. The production process of sulfur hexafluoride in the prior art will inevitably mix acid and acidic substances in the gas. It has a great impact on the safety and service life of electrical equipment. In view of this, the acidity of sulfur hexafluoride gas is a key indicator for the quality control of industrial sulfur hexafluoride and sulfur hexafluoride gas in operation. The traditional detection method uses a conical flask to absorb the gas under normal pressure, which needs to be repeated at least three times to ensure complete absorption. Moreover, the color change of the titration end point is judged by the ...

Claims

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Application Information

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IPC IPC(8): G01N33/00
Inventor 朱洪斌张晓琴王晨余翔解文龙张建国陈大兵刘建军李成钢张廼龙
Owner STATE GRID CORP OF CHINA
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