What is the purpose of this thread ring on the pipe?
Thread Content
As the title suggests, a group member asked: Is the purpose of adding such iron rings or threaded elements to pipes that are at a certain temperature to help with heat dissipation? After consulting the experts in the HaiChuan Technology group, I really gained a lot of knowledge! Reinforcement, windproof ring!
The spiral on the chimney is used to resist wind
Ring-shaped structures are generally thin-walled pipes to prevent buckling and provide stability support
The vortex streets generated by disrupted wind flow prevent resonance between the chimney and these vortex streets; negative pressure occurs behind the direction of the disruptive wind, and strong winds can blow down the chimney
I’ll try to explain it. Criticism is welcome. It’s used for turbulence control: when a rod is inserted into a fluid that is flowing in a directed manner, the Karman vortex street phenomenon occurs, resulting in vortices forming behind the rod. Moreover, natural wind does not flow at a constant speed, which leads to irregular vortex streets forming behind the rod. The wind then flows back toward areas of lower pressure, and these irregular backflows cause irregular vibrations. Over time, the rod can break. I’ve seen chimneys break due to wind before; later, I helped design one that took this issue into account, though it wasn’t spiral-shaped – a spiral design would be more scientific. I believe the force generated by the vortexes is directed longitudinally and transmitted vertically to the chimney base, thereby reducing the radial shear forces and vortex vibrations. Criticism and suggestions are welcome.
This is reliable; I reply first and then read, so my thinking isn’t affected by previous posts. There is negative pressure, and then the pressure difference is increased, which means a stronger wind force – that’s the same principle as what you said.
Long time no see! You’ve reached a master level now – take good care of yourself{:1_90:}