Sulfur hexafluoride gas is non-toxic, but it is easy to leak if it is not handled properly during filling. However, it is very dangerous when it leaks and the concentration is too high. Lead to impure gas and harmful substances. Therefore, the leakage detection of this gas must be strengthened.

If the moisture in the gas exceeds the specification, when the humidity changes, sulfur hexafluoride gas may condense on the solid insulation surface, making the surface become damp. At this time, the surface discharge voltage of the equipment will be affected, and a significant drop will occur. Therefore, before filling, the relative air humidity of the surrounding environment of sulfur hexafluoride should be measured, and the air humidity should be kept below 80%. If the measurement is unqualified, take measures or choose dry weather for filling.

In addition, common methods for detecting sulfur hexafluoride gas include:

Electrochemical technology: When sulfur hexafluoride gas contacts the high temperature catalyst at about 200 ° C, chemical reaction occurs and electrical signal is changed to find out whether the gas leaks. High voltage breakdown technology: mainly uses the gas insulation to judge whether there is leakage gas in the air according to the voltage change between the high-voltage electrodes in the detected air. Infrared spectrum technology: the gas has strong absorption to infrared light of specific wave band. This method has the advantages of high cost, complex structure, high sensitivity, no environmental interference and small detection error.

In order to timely remove and replace the leaked high-purity sulfur hexafluoride, when filling, start the ventilator and carefully observe the regulations. After filling, the side shall be inspected, and the side shall be inspected midway according to the specific situation.

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