Steam pipe support issue 2
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This post was last edited by yudeguoshi on 2015-8-27 at 10:37. For a steam pipeline with a pressure of 2.4 MPa, a temperature of 400 degrees Celsius, and a DN200 diameter, what is an appropriate distance between the two fixed supports? Can a pi-shaped compensator be used? If a compensator is to be used, which one would be suitable?
What is the pipe diameter? Determine the total straight length of the pipeline, and then decide how many π-shaped compensators are needed based on that total length; of course, this also depends on the size of the π-shaped compensators.
For expansion bend compensation, 50-60 meters is generally appropriate.
It’s better to use pattern compensation for the layout; this allows for the calculation of the expansion amount, that is, the slip amount. The slip amount should not be too large – generally, it should not exceed 100. The supports need to be extended to prevent slipping
Pipeline stress management is precisely for this purpose; it’s not enough to only consider the spacing between fixed supports. The possibility of achieving a one-time successful installation is relatively low. Repeated adjustments to the design of the supports is generally inevitable, although in cases where the quality of work is high, the chance of a one-time successful installation increases.
Not more than one hundred; it’s really hard to keep it at that level
It’s not so much a matter of difficulty; under normal conditions, this can be achieved by using a design with appropriate tension bending. However, sometimes process engineers are pressured by cost considerations and are forced to adopt a design with a large degree of expansion
For example, the expansion amount on the third floor isn’t very large; if you don’t believe it, just do the calculations
Well, I know that it’s possible to keep it under 100, but the π-bend will be very close; especially with high-pressure steam. For medium-pressure steam, the value is also around 150 or higher.
50-60 meters of medium-pressure steam should be able to do it within 100, but high-pressure steam definitely can’t, haha
Since I work in project management, from a cost perspective, I recommend using large π compensators. The use of such compensators is feasible provided that the site conditions permit it; if space is limited, several compensators can be installed to absorb thermal displacement. Moreover, from the standpoint of saving space, it is more advantageous to use π compensators in road designs.