Advantages and disadvantages of dome tanks and cone-top tanks, as well as a discussion on weak roofs
Thread Content
Most storage tanks built nowadays are dome-type tanks. What are the advantages of dome-type tanks? These days, it is common to require a weak roof structure in the design of tank roofs. However, according to the standards regarding the slope of tank roofs, most dome-shaped tanks do not meet these design requirements. I hope everyone will share their opinions on the use of weak roof structures for dome-shaped tanks.
A weak roof structure refers to a situation where, when the pressure inside the tank becomes too high and the tank is on the verge of bursting, it is not the tank wall that ruptures first; instead, it is the welds connecting the roof to the corner steel members that fail first, causing the roof to detach and thus allowing pressure to be released. To prevent the medium inside the tank from leaking out. The vault has good stress conditions; large storage tanks all have vaults.
Chinese people prefer dome-shaped jars because the dome design of small jars is simple and hassle-free. Europe and the United States prefer cone-shaped tops because they allow for a weak roof structure, which is safer. A vault cannot be a weak roof structure; only a cone-shaped roof can be a weak roof structure
That’s what was said upstairs. But many people still believe that if the height of the weld joint at the junction between the roof and the walls is less than 4, then it constitutes a weak roof. In many cases, anchor bolts should be used in vaulted tanks, but they aren’t used. It seems to me that the design of large tanks doesn’t receive as much attention as pressure vessels do.
The advantages of an arch roof are its simple structure, good stiffness, ability to withstand high residual pressures (thousands of millimeters of water column), and high steel utilization efficiency. Its disadvantage is that the gas space is larger than that of a regular conical top, and it is also more difficult to manufacture.
Does the weak connection structure fabricated according to sh3046 provide protection for the storage tank in the event of accidental damage?