Definition And Principle Of Corrugated Expansion Joint

A corrugated expansion joint, also known as a bellows compensator, is a structural component used to absorb axial, lateral, and angular displacements in pipelines caused by thermal expansion and contraction, mechanical displacement, or foundation settlement. Its core component is a metal bellows, which compensates for and absorbs displacement through its own elastic deformation.

This design allows it to expand and contract axially and also adapt to lateral or angular offsets. Furthermore, the corrugated expansion joint can also reduce vibration and noise, effectively mitigating vibrations caused by fluid impact; simultaneously, its flexible structure can compensate for pipeline assembly errors, reducing construction rework [8]. Its main functions include compensating for and absorbing axial, lateral, and angular thermal deformation of pipelines, absorbing equipment vibration, and reducing the impact of equipment vibration on pipelines.