Regarding the medium inlet pipe structure of liquefied gas storage tanks
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This post was last edited by SDHZZXM on 2017-11-23 at 15:45. Regarding the structure of the medium inlet pipe in horizontal liquefied gas storage tanks: Question 1: Why does the medium inlet pipe need to extend as far down as near the bottom of the tank? Question 2: Why is a hole drilled in the upper part of the tank (the gas phase space) for the medium inlet pipe? Question 3: Why is the medium inlet pipe beveled at 45° at the bottom?
Regarding the structure of the medium inlet pipe in horizontal liquefied gas storage tanks: Question 1: Why does the medium inlet pipe need to extend as far down as near the bottom of the tank? To prevent erosion and avoid false level readings caused by fluctuations in liquid level. Question 2: Why is a hole to be drilled in the upper part of the tank (the gas phase space) for the medium inlet pipe? Prevent air blockage from forming when the solution is introduced. Question 3: Why is the medium inlet pipe beveled at 45° at the bottom? Prevent the occurrence of the \"wall flow phenomenon\"; its distributive function.
The answer on the 2nd floor is comprehensive; two additional points: drill a through-hole in the gas phase space to break the siphon effect, and provide a 45° chamfer at the bottom to prevent liquid from accumulating at the pipe end
There are also those with the medium inlet located at the bottom of the storage tank
A hole is drilled in the upper part of the tank (the gas phase space) for the medium inlet pipe. Drilling a through-hole in the gas phase space – breaking the siphon. Which part(s) are being separated by this siphon? What’s the principle?
Since the liquid inlet is usually supplied by a pump, and the pump is generally located at a lower level, failing to create these holes could lead to siphoning effects when the pump stops operating, causing the liquid in the tank to flow back. Therefore, these two opposite holes are created to prevent siphoning. In general, such holes are installed on the tubes that extend below the liquid surface and are driven in by a pump; they are not necessary if the liquid flows under the effect of gravity.
fxy1860’s explanation is very clear