Must the U-bend of the steam pipe be placed between two fixed points?
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For a DN250 steam pipeline at 200°C, with a distance of 60 meters between the two fixing points, and a 19-meter-long overhead gantry located right in the middle of those two fixing points, where should the U-turn be placed? Put one end? Should we put one at each end of the gantry as well?
Generally, place it in the middle; if a single square compensation element is sufficient to solve the problem, there’s no need to use two, as that will affect the voltage drop.
The on-site situation was described; it’s because it wasn’t possible to place it in the middle that they asked
Isn’t this one already in a U shape? ?
The elevation of the gantry is the same as that of the pipe rack, so there are no elbows – it is a straight pipe
Isn’t it perfect to arrange a U-shaped bend there?
Just do it in the middle; according to the standards, it should fall under the category of stress calculation.
If there’s no space in the middle, just place it somewhere else; a rough estimate will do; it’s not necessary to have one on each side. Placing it in the middle is done solely to balance thermal displacement and thermal stress; if that’s not possible, then its position can be adjusted, as long as the thermal stress remains within acceptable limits.
Thank you, I’ll do a stress analysis