Questions from beginners about oil pipeline elbows
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May I ask whether 90-degree or 45-degree finished elbows with R=1.5D can be used for the gathering and transportation pipelines between stations within an oil field, as well as for the pipelines used to transport oil out of oil storage facilities? Thank you all for your advice.
No. Check the design drawings for requirements; generally, long-radius elbows are used, that is, ones with a bending radius greater than 1.5 times the diameter. To prevent pipeline blockages and reduce the resistance of the fluid flowing through the pipes,
I work on internal ball cleaning for pipelines. The current minimum bend radius for internal detectors is a curvature radius of 1.5D. The smaller the radius of curvature, the greater the risks associated with ball cleaning and internal inspection.
Received, thanks for the advice. If elbows with R=1.5D cannot be used, then only 90-degree or 45-degree hot-bent elbows are available, right? The radius of curvature should be greater than 5D, right?
As mentioned above, the limit is not less than 1.5 times; for large-radius elbows, it is usually more than 5 times
The larger it is, the lower the resistance and the less wear. 3D to 5D are all acceptable.