The issue of fitting reducers
Thread Content
When installing a reducer near a tee, for a converging tee, the reducer should be placed on the pipe before the convergence ； For a diverter tee, the reducer should be installed on the pipe after diversion. May I ask what the reason for placing it this way is, and what are the benefits? Thank you
I’ll take the lead on this; please help explain it to me
When the diameter of a pipe needs to be changed, reducer fittings are used; for welded pipe fittings, there are concentric welded reducers (elbows) and offset reducers. Generally, concentric reducers are used on vertical pipes, while eccentric reducers are used on horizontal pipes, so as to keep the top or bottom of the pipe level as required. ”Another point is that using concentric reducers on horizontal pipes can lead to fluid accumulation.
Reply to 3#: Love and hate at the same time. Well, I’m aware of what you’re saying, but when connecting pipes of different diameters, they should be placed on the branch pipes before the junction point； Why is it placed on the pipeline after shunting during shunting? What are the benefits of doing this?
I’ve sent a picture; please take a look at it. It’s just a rough illustration, so don’t worry too much about the diameter
This post was last edited by sailan on 2011-12-12 at 14:13. This is because the flow rate increases after the confluence; if it is placed further back, the flow velocity there increases and the pressure drop rises, and vice versa. This is just my personal opinion for reference only.
What kind of pressure drop does pressure drop refer to? Please help explain it.
After the confluence, the flow rate increases; adding an eccentric pipe further increases the local resistance of the tee, as the local resistance of the eccentric pipe makes that of the tee even greater. The function of the bypass reducer is to be set according to the bypass flow rate, right? It's just my personal opinion; please feel free to correct me.
Reply to 7# sailan: Also, I would like to ask that according to the continuity equation, when an incompressible fluid flows stably inside a circular pipe, the flow velocity is inversely proportional to the pipe diameter. So in my previous question, when the pipe diameter increases, why does the flow velocity rise?