Is there such a pipeline design?
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Is there such a pipeline design? The pipes before and after the air collection tank are both DN100, while the section in the middle, along with the valve, suddenly changes to DN150, leaving the designers completely confused.
It’s really the first time I’ve seen it; I don’t know why
Rare, kind of interesting; I’ll give it some thought
It is possible to reduce the flow velocity by expanding the diameter; this 150-length pipeline is controlled by only one ball valve. By reducing the flow rate of the medium, the ball valve has a greater ability to regulate the passage of the medium
I have indeed encountered situations where the client submitted a procurement plan as soon as the design drawings were ready. Later, changes were made to the process diagrams, but the client had already purchased the materials. At their insistence, a diameter change was added
:lol:lol, this situation really does come up often
As a supplementary note, my investment project is of the EPC type.
Personally, I think that when the diameter increases, the flow velocity decreases; as a result, some of the liquid entrained in the flow is separated out and carried away through the pipes below. If the pipe diameter is the same, then the entrained liquid will basically not precipitate. Don’t ask me what happened; I don’t know either. :lol
From the photos, a branch pipe is connected to the main pipe; a DN150 main pipe would also be reasonable. Perhaps during the initial design, the device’s connection port was specified as DN150, but the manufacturer manufactured it as DN100; since the pipe material had already been purchased, only the connection port was changed.
It’s probably because there isn’t enough material; that’s how it’s installed. There’s not much point in designing it this way
Some rotameters change the diameter of the tube – is that for buffering purposes? I don’t know