Problems with pipeline expansion joints in catalytic boosters
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During the operation of the booster pump, it was observed that there are three expansion joints located right next to the inlet and outlet pipelines of the booster pump (one at the inlet and two at the outlet). It seems that the temperature difference in this area shouldn’t be significant; then what is the purpose of these expansion joints here? I hope the teachers can provide some guidance; thank you!
According to the definition of expansion joints, it can be seen that the booster is added to compensate for the additional stresses caused by mechanical vibrations. This equipment is also available on reciprocating vacuum pumps. Expansion joints* are also commonly referred to as compensators, or telescopic joints. It consists of a bellows (an elastic element) that forms the main part of its structure, along with accessories such as end tubes, brackets, flanges, and ducts. An expansion joint is a flexible structure installed on a vessel shell or pipeline to compensate for the additional stresses caused by temperature differences and mechanical vibrations. It utilizes the effective expansion and contraction of its main working element, the bellows, to absorb dimensional changes in pipelines, conduits, containers, etc., caused by thermal expansion and contraction, or to compensate for axial, lateral, and angular displacements of such pipelines, conduits, and containers. It can also be used for noise reduction and vibration damping, as well as for heating purposes. To prevent pipes from deforming or being damaged due to thermal expansion or temperature stress when the heating pipes heat up, compensators need to be installed on these pipes to account for their thermal expansion, thereby reducing the stress on the pipe walls as well as the forces acting on valves or support structures.
The booster doesn’t need an expansion joint; isn’t it sufficient to design it with an expansion bend along with spring hangers?
One possibility for the outlet is a butterfly check valve, which is somewhat similar to an expansion joint!
Teacher, your answer is extremely professional; thank you!
The booster is added to compensate for the additional stresses caused by mechanical vibrations and to absorb the displacement resulting from expansion in the pipelines.