How to distinguish between external pressure vessels and vacuum vessels
Thread Content
This post was last edited by Li Jia Xiao Nu on 2011-9-26 13:30. How to distinguish between externally pressurized vessels and vacuum vessels?
In engineering, aside from vacuum vessels and diving vessels, there are no true external-pressure vessels； What the original poster is discussing generally relates to vacuum containers and external pressure components.
A pressure vessel is one in which the pressure comes from an external medium; for example, a jacketed vessel, where the inner cylinder constitutes a pressure vessel. A vacuum container refers to a container whose internal pressure is lower than atmospheric pressure. Of course, a vacuum vessel also belongs to the category of external-pressure vessels, only the external pressure in this case is exerted by the atmosphere.
The external pressure may be greater than 0.1 MPa, while the external pressure on vacuum pressure vessels reaches at most 0.1 MPa. That is, vacuuming the inside!