Regarding the external reinforcing ring
Thread Content
Design a DN4000*L=18000 horizontal tank for external pressure service, with a platform. 1. Can a platform support be welded to the outer reinforcement ring, that is, can the outer reinforcement ring bear the load of the platform? If so, how should it be calculated? 2. Is the outer reinforcement ring a pressure-bearing component? If yes, is it necessary to weld the platform support to the reinforcement ring before the hydrostatic test?
Regarding the first point, it’s certain that it’s possible; it’s just difficult to calculate, and there’s no unified method for doing so
Question 1: Can a platform support be welded to the outer reinforcement ring, that is, can the outer reinforcement ring bear the load of the platform? If so, how should it be calculated? Answer: I personally think it should be possible; one should first calculate the amount required for reinforcement and then add the amount needed for support. However, I’m not sure about the actual calculation method; I look forward to an answer. Question 2: Is the external reinforcement ring a pressure-bearing component? If so, is it necessary to weld the platform supports on the reinforcement ring before the hydrostatic test? Answer: According to the code, it is not a pressure-bearing component. It should be done before the hydrostatic test.
It can be welded to a platform; it is not a pressure-bearing component
Agree with the person above. As long as the external pressure vessel has undergone proper calculations according to SW6, there should be no problems. With a diameter of 4000 and a platform of 1800, it shouldn’t be very heavy, and since the weight is distributed evenly across the device itself, there should be no problem.
Why must the reinforcement ring be used as a connecting plate for the platform? ! In terms of the strengthening effect, a larger moment of inertia is achieved when connecting to the platform, which provides better reinforcement for the cylinder; however, when using the platform connection plates, it is necessary to check the strength of the fillet welds that connect the reinforcement ring to the cylinder (in fact, it’s not even necessary to do this, as there will be no problems anyway). It is recommended to perform double-sided continuous welding on the reinforcement ring