Do fixed points need to be installed for 800-meter long DN150 pipes at a 10-degree angle?
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This post was last edited by security on 2011-6-22 at 11:23. Is it necessary to install fixing points for 800-meter long DN150 pipes with a 10-degree slope?
10 degrees, does it refer to temperature? If it is the operating temperature, there is no need to set a fixed point. Since the operating temperature is not much different from the installation temperature, the expansion of the pipes is minimal. So stress calculation is also unnecessary.
Fixed frames are required at the areas where entry and exit from the zone take place; fixed frames are not necessary in other areas, as only load-bearing frames and guide frames need to be considered
A guide bracket is all that’s needed; if it’s an 800-meter straight pipe, an N-shaped bend should be added in the middle to naturally reduce the stress
For an 800-meter straight pipe, at a working temperature of 10 degrees and assuming it’s made of 20#, with an average summer temperature of 30 degrees, the amount of thermal contraction is approximately 170 mm. I think it’s better to add fixing points at both ends and allow slight natural compensation in the middle
The pipe diameter is not large, and the temperature difference is small; it doesn’t matter whether it’s added or not. If considering the overall structure, it’s also a good idea to add a fixator in the middle – after all, creating a fixing frame isn’t complicated, and the thrust involved is not significant~~
Agreed; even without any natural compensation, it is standard practice to install a support in the middle to regulate the expansion of the pipes. Considering **such accidental conditions as well, one should still install such a support.
As everyone knows, when adding new pipes to pipe racks in chemical plants, there are many bends. My supervisor actually asked me to reinforce the racks at the end of each straight section of pipe; I said that such a design would be laughed at by others, but he insisted anyway. I was completely stunned. It’s really frustrating to encounter such a leader
Reply to 8# sailan: It seems your manager isn’t in the technical field