Does the welding of this tank equipment assembly comply with the specifications?
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Below are photos of the welding process for the shell side of a full condenser, with an outer diameter of around 1000 mm. The shell side contains cooling water, with a working pressure of around 0.4 MPa, while the tube side holds the medium produced in the process, under a vacuum condition with a working pressure of approximately -0.06 MPa. I’ve asked some friends who work with equipment, but I’m not sure whether welding components together in this way meets the relevant standards Why?
What does that mean? I don’t understand what the first two images mean – why are the welds so close to each other, and why aren’t they along the entire perimeter? In the third image, the hole is made in the weld area; in principle this is acceptable, but the components surrounding that hole need to be inspected 100%.
The three images represent one location. It might be due to the light; it doesn’t seem to cover the entire circumference, but in reality the welding covers the whole circle. Maybe the material is just like that – it’s missing just a little bit. But I just wonder why the flange jumper has to be placed in that location
Is the takeover the drain or vent hole on the tube sheet?
Without being able to see the assembly diagram, it’s impossible to make arbitrary comments.
It is impossible to make a judgment based solely on a partial diagram.
GB150 requires that the length of any tube section must not be less than 300 mm; this requirement is not likely to be met!
This equipment does not fall under pressure vessel regulations nor complies with GB150; for the positioning of openings in the shell-side connections, the inspection requirements specified in NB/T47001-2009 for atmospheric pressure vessels can be referred to
Judging from the diagram, it appears that the welds at both ends of the take over are those of the tube sheet; they should be ventilation or drainage holes of the tube sheet.
This is the difference between experts and amateurs; you recognized the problem right away. I checked the diagram; it’s on the pore plate, and now I understand. Thank you!
Weld the tube sheet. It’s just a drain port on the shell side. A vertical heat exchanger, I guess.