Safety valve on the container
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Are there any requirements regarding the installation location of safety valves on pressure vessels? The tolerance specifications state that it is sufficient as long as it is in the gas phase space. May I ask, is it necessary to do this at the highest point of the container, that is, at the head section?
Of course, it has to be at the top of the container – after all, it’s gas, and the pressure is highest at the top. “The regulatory requirements state that it is sufficient as long as it is in the gas phase space; the new regulations no longer specify such things, and one must consult the relevant design standards for details. For example: GB150.
What was said upstairs isn’t quite right, is it? It is generally placed at the top; of course, you can also choose the middle, as long as it is within the same space, the pressure will be the same. Of course, you need to consider that it won’t work if there’s liquid below. . .
Overpressure on the liquid side generally does not cause an explosion; it only leads to leakage with very little energy released, so the danger is low. In contrast, overpressure in the gas phase results in a large release of energy, which can lead to an explosion. If a pressure vessel has only one safety valve, it should definitely be located in the gas space; the top of the equipment is the best location for this.
I also think it’s fine to place it in the gas phase space; it doesn’t have to be at the top. But have you ever seen a safety valve installed horizontally? If it is installed vertically, it increases the length of the pipes and the number of bends, thereby increasing resistance. This is probably why it’s best to install it at the top.
“According to the regulations, it is sufficient as long as it is in the gas phase space; it doesn’t have to be at the top. For many gas storage tanks, the safety valves have pipes leading out from the middle, and the safety valves can then be installed horizontally!
Safety valves are generally installed in the gas phase space, but not necessarily at the top; horizontal installation has not been seen, as it can easily injure people and creates greater resistance.
It’s not just required to be installed in the gas phase space, right? The safety valve must also be installed vertically; I think the standards require this. Is it possible to install it horizontally?