Sulfur hexafluoride gas is a colorless, tasteless, non-toxic gas with good insulation. Sulfur hexafluoride equipment is widely used in power transmission system due to its high insulation strength, excellent arc extinguishing performance, cooling characteristics, incombustibility and thermal stability. This time we will introduce how to detect gas leakage.

The leakage detection of sulfur hexafluoride gas mainly adopts electrochemical technology, electric breakdown technology and infrared spectrum absorption technology.

1. Electrochemical technology: The principle of electrochemical technology is that the detected sulfur hexafluoride gas contacts the catalyst surface at a high temperature of about 200 ° C, and reacts with it accordingly to generate changes in electrical signals, so as to discover the detected gas.

2. Electrical breakdown technology: The electrical breakdown technology evolved from the typical application of sulfur hexafluoride gas in electric power as an insulating gas in GIS switchgear. Its working principle is to judge whether there is SF6 gas in the air according to the characteristics of SF6 gas insulation and the change of voltage between high-voltage electrodes placed in the air to be tested.

3. Infrared spectrum absorption technology: The principle of infrared spectrum absorption technology (also known as laser technology) is that sulfur hexafluoride gas, as a greenhouse gas, has a strong absorption characteristic for infrared light of a specific band.

With the promotion of new technology and the application of new equipment and materials, high-purity sulfur hexafluoride equipment has been widely used in the power system for its advantages of safety, reliability, easy maintenance and long service life, and has played an important role in the safe, economic and stable operation of the power system.

The content of the article comes from sulfur hexafluoride gas: http://www.feiliergas.com