[Haichuan Weird Safety Danger Season 4] Guess which one is the oxygen tube?

The gas cutting torch should have one oxygen tube and one acetylene tube. The oxygen tube must have used a red acetylene gas belt. The oxygen gas belt should be black and blue. This is a serious violation!

This post was last edited by Fish in the Desert on 2020-11-24 11:48

Under what circumstances will an acetylene-oxygen mixture explode? This kind of accident is less common than the explosion of acetylene-air mixed gas, but it is very destructive. As long as the oxygen contains 2.8-93% acetylene, it will explode when encountering an open flame. Especially when the acetylene content is about 30%, it is most likely to explode. Even if it reaches the auto-ignition temperature under atmospheric pressure, it will explode. What are the types of oxygen-acetylene flashback explosions? What are the reasons? There are two types of accidents: One is the explosion of a mixture of acetylene and air at the start of work ； The other is the explosion of acetylene and oxygen mixed gas due to operational errors during work. The reason is: 1. At the beginning of work, the air accumulated in the gas chamber is not completely discharged, that is, it ignites on the welding or cutting torch nozzle, causing backfire and backfires to the flashback preventer or the gas storage chamber of the generator, causing the acetylene and air mixed gas to explode. 2. During normal operation, due to the blockage of the welding and cutting nozzles, oxygen is poured into the gas storage chamber of the flashback arrester and the generator, and the mixed gas is not completely discharged, and the welding and cutting torch nozzles are ignited, causing backfire and backfired to the gas storage chamber of the flashback preventer and generator, causing the mixed gas of acetylene and oxygen to explode. 3. Due to the failure of the backfire arrester or the failure of the backfire arrester at all, a backfire occurred and the air storage chamber or the generating air chamber was blown up.