Welding of the clamping sleeve body and the inner tube body
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I would like to ask everyone: For a jacketed vessel with an inner tube 22 mm thick, a jacket 8 mm thick, and a gap of 7 mm between the inner tube and the jacket, is it acceptable to use the fillet welds as shown below? How is the strength of fillet welds calculated?
This post was last edited by xlxuiin on 2017-8-15 15:24. Parameters such as the medium inside the jacket, pressure, temperature, etc.? Is the gap only 7mm?
There should be shims in the middle, right? Just weld it directly like this; it’s difficult to ensure 7mm accuracy
The jacket medium is nitrogen, at a temperature of around 200 degrees and a pressure of 1.7 MPa
This post was last edited by taozb on 2017-8-15 16:09. Such a welding structure isn’t very suitable
I really have never seen a jacketed container like this; usually, the gap between the jacket and the inner cylinder is around 50–100 mm.
This post was last edited by taozb on 2017-8-15 at 16:10. It is recommended to add a ring of shims at the ends to maintain the standard gap between the jacket and the inner cylinder.
Well—, this structure is not suitable.
The jacket pressure multiplied by the gap area and then divided by the fillet weld shear area gives the fillet weld shear force, which can then be used for determination. However, there are issues with the welding of the above structure; it is better to treat it according to the GB/T150 structure standards.
First, why such a small gap? If possible, why not increase the gap, so that a coupling ring or a clamping sleeve can be used to fold the edge? Furthermore, I think this welding method is unreasonable; the gap for welding is too large, and shims need to be used.
This structure is incorrect and does not conform to the general design principles for jacketed pressure vessels; the welding between the jacket and the inner cylinder should be carried out using a T-type butt weld.