I would like to ask the more experienced members in the group for their guidance.
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Seeing such piping on site gives one an indescribable feeling. Please ask the more experienced members in the group to engage in thorough discussions and share their opinions.
Very professional; eccentric large and small ends, with no material buildup.
Following the diagrams as standards is the first step, after which relevant standards should be checked. For reference.
With such a large reduction in diameter at the first stage, it is likely that the material flowing upstream does so by gravity; downstream, there are mass transfer devices such as pumps. Once the type of these devices is determined, it becomes unnecessary to use pipes with a very large diameter for the connections, and therefore a significant reduction in diameter is required. I didn’t notice anything unusual or strange about the second one; my eyesight isn’t that good, I’m afraid.
Secondly, the flange is very tight; is the pressure high? It’s also quite troublesome to disassemble it
Is it allowed to cut in pipes at fittings on the pipeline? I personally don’t like to do this; it’s better to use straight pipes or connect things to straight pipes.
I also feel a bit awkward; could it be due to requirements of some special manufacturing process? Figure 1: The flow velocities in thick and thin pipes can differ significantly. Assuming the thick pipe has a diameter of 200 and the thin one 50, the flow velocity will be 16 times higher in the thicker pipe; this difference can lead to erosion in such pipes or cavitation when fluid passes through valves ； Figure 2: Does a small flow of fluid circulate through the bypass tubes when the heat exchanger is not in use? It’s better if this tube has a slight bend; it’s too straight and can cause injuries. If there’s anything wrong, please definitely let me know, so we can improve together.
In the first diagram, with so many joints on a reducer, couldn’t it be designed as a single unit? If the pressure is high, safety is compromised – aren’t all those welds and non-destructive testing procedures costly? With these two diagrams, it’s not possible to plan things properly; the pipes make so many bends that they’re almost forming a circle.
Figure 1 shows several eccentric stubs welded together; there may be a lack of material； In Figure 2, the circulating water pipeline makes several bends; this is a quite common situation in actual on-site construction!
1. There shouldn’t be such a large change in diameter; construction on site in this way should be fine. 2. If the circulation water pipeline makes a loop, it will be difficult to operate the valves when considering the connection between the pipeline and the flanges, but this doesn’t violate any regulations