What are the structural features of large spherical tanks? (There are rewards for participation)

What are the structural features of large spherical tanks? (1) Large gas storage tanks have a large diameter, but their total weight is not high; the dimensions of their supports are relatively small. For example, a 20,000 M3 coal tank has a total weight of 1,400 tons ； In contrast, the 5000M3 liquefied gas sphere tank has a total weight of 3500 tons; it features 13 supports, each capable of bearing 230 tons. The supports are made of steel pipes with an outer diameter of 800 mm and a wall thickness of 13 MM. Therefore, in terms of pillar thickness, the pillars of large gas storage tanks are thin, while those of large liquefied gas storage tanks are thick. (2) There is a revolving staircase inside. For ease of inspection inside the sphere, straight ladders or revolving ladders are installed on its inner surface. A revolving ladder is an arc-shaped ladder that runs from the top of a sphere to the equator or the lower part of the sphere; it can rotate around the entire circumference centered on the top of the sphere, along the guide rails at the equatorial region. (3) There are steps and platforms on the outside. For the external inspection of large spherical tanks, it is not possible to use a ladder that leads straight up as is done with small spherical tanks; therefore, spiral ladders are usually installed along the outer surface of the sphere all the way to the top, with rest platforms provided at intervals along the way.

Large spherical tanks usually come equipped with 2 breathing valves! They generally belong to micro-interior-pressure storage tanks, and their diameter is also relatively large; therefore, materials for critical components are steel plates with a high allowable stress, such as 16MnR! If the storage medium is corrosive, anti-corrosion properties of the material must be taken into consideration!

Large spherical tanks usually come equipped with 2 safety valves; they have a large diameter and require high-quality materials

The problem of long weld lengths and prolonged operation time in large spherical tanks. Large spherical tanks have very long welds, often stretching for several kilometers; as a result, the required processing time is long and the investment costs are high, making automation essential.

Do structural features refer to the structure required by the process or the structure manufactured?

Regarding the third floor, \"so materials for the critical parts will be steel plates with a high allowable stress such as 16MnR.\" However, according to current national standards for pressure vessel design, material like 16MnR is not generally used; instead, Q345R is chosen.

Large spherical tanks generally refer to pressure vessels. Atmospheric pressure vessels usually use vertical storage tanks. Large spherical tanks generally require safety valves. If the material inside a large spherical tank is volatile, a vent condenser must also be installed at the top. Large spherical tanks generally require a fire sprinkler system. Large spherical tanks generally have their own tank farm.

How big does a large spherical tank need to be to be considered large? 1. Large storage tanks generally have a large capacity and hold a large amount of material, so their foundation must be more solid. 2. The shell structure of the spherical tank changes as its volume increases.

Wrong – a spherical tank doesn’t have a breathing valve; it has two safety valves

Spherical tanks have good stress distribution (which is an advantage of cylindrical storage tanks); as a result, their thickness is much less compared to cylindrical tanks. Due to their spherical shape, discharging material from them is more complicated. Additionally, heat treatment is usually required, and non-destructive testing is also relatively stringent