Seniors, here’s the junior again
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The reaction tank I’m working on now has a cylinder height of 1600, a diameter of 2000, and a total height from the floor to the top of 3600. I have assumed a static liquid pressure of 0.021 (based on the height of the lower head and the cylinder itself). Currently, the SW6 check fails for a 42-mm hole located in the cylinder, but the check passes when the static liquid pressure is set to 0, with a failure rate of 9%. So I was wondering whether the hydrostatic pressure resulting from fluid injection in devices of this height needs to be taken into consideration; since the checks for the other holes have all passed, I don’t want to make any adjustments just because of this one hole. Also, what date is everyone off^_^?
Does your company still have holidays? I’ll be happy too if you tell me the name
We’re giving 20 days, because the boss needs to hide from his debts:P
I guess you’re here to show off that you’re on vacation:P:P:P
If the hydrostatic pressure of the liquid column in the calculated pressure is less than 5% of the design pressure, it can be ignored. It depends on the design pressure of your equipment. Many reaction vessels are equipped with jackets; there is a version of the SW6 in which the openings in the vessel body and lower head are designed to withstand external pressure. If that doesn’t work, try calculating it again based on the individual components
Is 0.021 the static liquid column pressure at the opening?
Those who can avoid paying their debts are all big bosses; as long as they don’t owe money to their employees, they’re good bosses worth serving wholeheartedly
1. Is it over 5%? If not, even more aggressive methods do not consider a filter column； 2. Is it exempt from calculation? If so, as above, exempt directly ； 3. If none of the above conditions are met, and one does not want to change the thickness of the component, then according to the precise calculation method, the static pressure of the liquid column can be determined using the position of the pipe opening; this approach makes sense both logically and practically ； 4. If point 3 is not met, solutions such as adding reinforcing rings (if applicable), increasing the pipe thickness, using forged pipes, and increasing the thickness of the cylinder shell can be employed!
The premise that the hydrostatic pressure of the liquid column is not taken into account is when calculating the shell thickness using the mean diameter formula. However, the hydrostatic pressure of the liquid column, as a type of load, cannot be ignored when checking stresses. I recommend taking this hydrostatic pressure into account; if thick plates are not desired, thick-walled tubes can be used instead.
Okay, the last thing I did was add a section of thick-walled pipe