Why does a flamethrower not explode?

  • Thread starter lokifenrir96
  • Start date
In summary, the reason why the flame does not spread backwards along the stream of flammable gas or liquid in a flame thrower and cause an explosion is due to two factors. Firstly, the fuel does not contain oxidizer and therefore requires oxygen in the air to burn, which it cannot do until it is expelled. Secondly, the stream typically travels faster than the flame can propagate, carrying the ignition point away from the operator and preventing an explosion.
  • #1
lokifenrir96
21
0
To be more specific, why is it that when the flammable gas or liquid is pumped through the barrel and ignited at the end of the barrel, the flame does not spread backwards along the stream of liquid/gas into the fuel container and cause an explosion?

Is it simply because of the high pressure at which the fuel is pumped out? Or is there another reason, or a safety mechanism to prevent this from occurring?

Thanks!
 
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  • #2
Two factors. Most important is that fuel in flame thrower doesn't contain oxidizer. It needs oxygen in air to burn. So it can't burn until it is expelled.

Second is that the stream typically travels faster than flame can propagate along the stream. So the ignition point is actually carried away from the operator.
 
  • #3
Well-explained, thanks!
 

1. Why is it safe to use a flamethrower without the risk of explosion?

The design of a flamethrower is specifically engineered to prevent explosions. The fuel and compressed gas are kept in separate chambers, and the fuel is only released when it reaches the tip of the nozzle. This prevents any backflow of gas into the fuel chamber, which could cause an explosion. Additionally, most modern flamethrowers also have safety mechanisms, such as pressure release valves, to further prevent explosions.

2. Can a flamethrower explode if it is damaged or dropped?

While it is possible for a damaged or dropped flamethrower to explode, it is highly unlikely. As mentioned before, the design of a flamethrower prevents backflow of gas into the fuel chamber. Additionally, most flamethrowers are made with sturdy materials and have safety features to prevent accidental explosions.

3. Is there any risk of explosion when firing a flamethrower?

When used properly and in accordance with safety guidelines, there is minimal risk of explosion when firing a flamethrower. However, it is important to note that flamethrowers are still dangerous weapons and should be handled with caution and proper training.

4. What happens if the fuel and gas mix in a flamethrower?

If the fuel and gas mix in a flamethrower, it can create a dangerous and potentially explosive situation. This is why flamethrowers are designed with separate chambers and safety mechanisms to prevent this from happening. If the fuel and gas do mix, it is important to immediately stop using the flamethrower and safely dispose of it.

5. Are there any situations where a flamethrower could explode?

In rare cases, a flamethrower could explode if it is modified or used improperly. For example, using the wrong type of fuel or compressed gas, or modifying the safety mechanisms, could increase the risk of explosion. It is important to always follow the manufacturer's instructions and safety guidelines when using a flamethrower to avoid any potential explosions.

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