Specific explanation and answers to three common questions on storage tanks

On the storage tank, the following is mainly for answering questions and solving doubts about this product, in order to explain some of its difficult problems, so that everyone can have a clear understanding and correct understanding, and promote the learning process of this product. In this way, we can also benefit from it and continuously improve ourselves.

How should the overlapping length of the upper and lower ring plates be determined when designing a storage tank?

When designing a storage tank, the determination of the overlapping length of the upper and lower ring plates should be based on the specific type of storage tank and the corresponding specifications and models. Moreover, if there are relevant schematic diagrams, it will be beneficial for the progress of this work and can also improve the accuracy of the results. So, if this question is asked in this way, it cannot be answered.

2. Will there be excessive negative pressure inside the storage tank?

Generally speaking, this problem does not occur in storage tanks. Because for storage tanks designed for micro internal pressure, there will be breathing valves or safety relief devices on top. Once the set pressure is exceeded, the storage tank will automatically open to release pressure to ensure safety. For atmospheric pressure storage tanks, there are ventilation holes on top to connect with the atmosphere and maintain equal pressure inside and outside the tank, thereby avoiding the above-mentioned problems.

Why is the design temperature of low-temperature LNG storage tanks -165 degrees?

This is because, under normal pressure, the boiling point of liquefied natural gas is -160 degrees. If its temperature is lowered below the boiling point before storage, the operating pressure of the storage tank can be slightly higher than normal pressure. This can effectively reduce the wall thickness of the storage tank and improve its operational safety factor, providing good safety guarantees.

The above are common problems in storage tanks, so they are gathered together and answered in detail and specifically, so that everyone can understand clearly and have no doubts, thus solving these problems very well. At the same time, in practical work, it can also improve the effectiveness and utilization value of storage tanks.