What is the allowable bending moment of the cylinder at the support of a vertical cylindrical pressure vessel?
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I would like to ask Haiyou, the nominal diameter is 4000mm, the wall thickness is 10mm, the material is S30408, and the design pressure is 0.6MpaG. If a B8 ear-type bearing is used, how to use the interpolation method to calculate the allowable bending moment of the cylinder at the bearing? The total load capacity of the equipment is 35,000 tons, and the straight section is 4,500mm.
Rigid ring-ear type supports are more suitable.
In our case, we generally use ear-type bearings with rigid rings. For specific calibration calculations, please refer to HG/T20582-2011.
Is that a mistake? 4000mm diameter, straight tube height 4500mm, weight 35000 tons? Including the head volume, it is only about 60 cubic meters. Are you sure it is tons? Instead of 350000kg?
The interpolation method cannot be used to obtain the allowable bending moment, so a ring seat is used. But the weight unit must be written wrong.
You first calculate the bending moment of the support you calculated.
Can't I just use a larger support?
See AD2000D German standard
In fact, it is a problem of local stress calculation of the cylinder at the support. Please refer to Article 3.6.3 of the JB/T4712.3-2007 standard interpretation.