Could you please tell me about the calculation of the rectangular takeover reinforcement of the container?
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The existing 650mm×300mm rectangular nozzle needs to be connected to a container with a design pressure of 0.24MPa and an inner diameter of 1000mm. Is there any reinforcement method? How to calculate it specifically?
This is similar to the feed inlet of a cyclone separator. Our unit usually gives the cyclone separator package to professional manufacturers for design, including strength calculation. According to the professional manufacturers, they directly conduct ANSYS analysis and add pipe loads. This not only solves the problem of opening reinforcement, but also solves the problem of local stress.
The person above is right. If the reinforcement of rectangular openings is calculated using SW6, I have consulted experts from the Chemical Technology Center Station and they said that it should be calculated based on the circular opening with the diagonal as the diameter. In fact, it is most convenient to use finite element in this case.
Finite element software is very expensive and there is nothing we can do to get it.
I have done such an analysis before. Strength calculation can only be calculated using finite element analysis, such as ANSYS. The result at that time was that the stress was greatest at the inner corners of the connection between the four corners of the rectangular nozzle and the cylinder. There are many reinforcing methods. The main method used in China is to add a certain area of reinforcing plate on the outer surface of the connection circumference between the cylinder and the nozzle. At the same time, two symmetrically arranged round steel can be added inside the rectangular nozzle, which can both strengthen and reduce the outward expansion of the rectangular intubation. After calculation, it can indeed reduce the stress.
For equipment with very low pressure, just make it thicker. Stress analysis is possible, but it is cumbersome. The cost is too high.
How to set up round steel, please explain in detail
When doing the analysis at that time, round steel with a diameter of 12 was used. There are no standards for selection at the moment, let’s see if there is any experience that we can learn from. Or change the situation and use finite element to calculate it several times. However, the boundary condition loading for this calculation is indeed a bit complicated.