Liquefied petroleum gas cylinder tank
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The bottom of a liquefied petroleum gas spherical tank has only one opening (aside from the manhole and instrument openings), and there is a single pipeline for filling and draining the tank. Is this design based on safety considerations? Additionally, please discuss what problems may arise in practical operations when there is only one pipeline, and what optimizations and modifications are needed in piping design to address some of these issues.
It seems feasible! Don’t you use pumps for transportation? Without a pump, delivery can only be done by tank pressure! Nitrogen is being introduced into the tank top! It’s impossible to feed material while simultaneously picking it up!
Pouring and extracting are definitely done using pumps for transportation. But what are the disadvantages of using a spherical tank with inlet and outlet pipelines in operation, and what precautions should be taken?
For this, our entry and exit are separate! You mean there’s only one path for entry and exit, so how can it pass through the pump?
I don’t care about the number. Each has its advantages and disadvantages, and the control parameters can address them all! It’s mainly the temperature, and its relationship with the original pressure
For safety reasons, the spherical tank is required to have only one opening; this advantage lies in enhanced safety. With only one root valve, fewer blind plates are needed during maintenance, and there are also fewer critical static sealing points. The drawback is that a single storage tank cannot be used for circulation, or the circulation effect is poor; this is rarely used in production. Another issue is that sampling is now required to be taken from the pipeline rather than from the storage tank, and deviations may occur due to such differences
I think having a single outlet has many disadvantages; it requires frequent inspections and routine maintenance. If there is material in the tank and the bottom valve fails, it becomes a problem to drain the contents
This is safer; the more openings there are, the greater the impact on strength. And there are also more leakage points. So the fewer words used, the better
Current design firms, out of considerations for safety, design systems with one inlet and one outlet line; this is commonly seen in storage facilities. For production facilities, two inlet and outlet lines are usually used. Our company has a logistics bonded warehouse, where a single line is sufficient for such facilities. I verified this repeatedly and confirmed that this approach is indeed safe and feasible, and it’s quite practical for logistics and storage purposes. However, it poses difficulties in production settings and is not suitable for production use; it’s provided here only for reference
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What issues should manufacturing enterprises be aware of when using this type of spherical tank?