Seeking advice on containers becoming flattened due to vacuuming
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Generally, a vacuum pump is used to create a vacuum; or rather, what level of negative pressure will cause the container to deform?
Strength calculation! Different structures have varying resistance to deformation!
It is necessary to check whether the container has been designed as a pressure vessel, taking into account both internal and external pressures; if it is designed as a device operating in a complete vacuum, then deformation will not occur due to the vacuum pump
Vacuuming creates negative pressure, that is, external pressure; it is necessary to know to what extent the vacuum has been created in order to calculate the external pressure
For this, you can use SW or PVELITE to apply negative pressure and check it.
Just calculate it using the external pressure calculation method specified in GB150, and you’ll know.
You can refer to this post: [Petroleum Chemicals Section] It’s all caused by pressure + various incidents of storage tanks collapsing (deflating). 003 https://bbs.hcbbs.com/thread-1339831-1-1.html (Source: Haichuan Chemicals Forum – Huahai Chuanliu)
This needs to be calculated; there are many reasons such as different shapes, varying strengths, and so on
This requires strength calculation to be done