Some pumps have expansion joints connected to their inlet and outlet ports. I would like to ask experts what the purpose of these is?
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Eliminate the impact of stresses caused by pipeline deformation on the pump body
1. Reduce the impact of the pump’s own vibration on the alternating stresses in the inlet and outlet pipelines； 2. Perform temperature difference compensation between the pump and the pipelines.
It is to relieve stress, and another purpose is to prevent pipes from being damaged by thermal expansion and contraction. Generally, you will find that the pipes at the inlet and outlet of pumps in refineries have at least one bend.
1. Prevent damage to pipes and equipment caused by thermal expansion and contraction. 2. Absorb shocks
It is generally used to eliminate pipeline stress
Stress relief, temperature difference compensation, and ease of maintenance for equipment and pipeline accessories.
The expansion joints at the pump inlet and outlet are used to absorb vibrations. Some pumps vibrate significantly when in operation.
It’s about vibration reduction; I don’t think relying on expansion joints will work, and it’s better to solve the problem by using piping
For simple vibration damping, soft connections are sufficient; expansion joints are generally used in pipes exposed to high temperatures