How to determine whether a tube is expanding upward or downward
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There is a pipe between the two containers, with a height difference of about 10 meters between their upper and lower ends. When the temperature rises, how can we determine whether the pipe expands upward or downward?
Find the support point under load, and use this support point as the reference for making decisions.
Pipelines expand radially and axially when heated; your application can be considered as a simply supported beam, with one end fixed and the other free, or with both ends fixed. When one end is fixed, the expansion direction is toward the free end ； When the two ends are fixed, the pipe bends axially to compensate for the amount of expansion; you can refer to the \"Power Piping Design Manual\" or the relevant sections on mechanics of materials, which provide information on this topic
Both experts spoke very well; it’s thought-provoking! Could you be more detailed? Fixed at both ends.
Both experts spoke very well; it’s thought-provoking! Could you be more detailed? Fixed at both ends.
With fixed ends at both ends, the only option is to consider using expansion joints or expansion bends
The temperature of the fluid flowing through the pipe determines the amount of expansion of the pipe. In such situations, only the axial expansion – that is, the expansion in the direction of the pipe’s length – needs to be considered; this expansion is calculated as the length of the pipe multiplied by the temperature difference, plus the linear expansion coefficient of the pipe material at that operating temperature. Based on this value, it can be determined whether pipe compensation is necessary. Common compensation methods include corrugated expansion joints, square compensators, as well as L-shaped and Z-shaped compensators; these are used to absorb the elongation of pipes. Common reference materials include the Design Code for Flexible Pipelines in the petrochemical industry and the Design Manual for Power Pipelines. Pipeline expansion involves quite a lot of content, especially since charts need to be included. The post cannot accommodate such a large amount of information; I’ll check later to see if there’s a way to upload the aforementioned materials
https://pan.baidu.com/s/1WbfF7GLDL4IIW00UNxktkg Specifications for Flexible Design of Petrochemical Pipelines SHT3041-2016
https://pan.baidu.com/s/1GJtcNsMgIJhY3_DVs_T8LQ Power Pipeline Design Manual – all with bookmarks
https://pan.baidu.com/s/1GJtcNsMgIJhY3_DVs_T8LQ