Compensators, also commonly referred to as expansion joints or bellows joints, are composed of a corrugated tube (an elastic element) that forms the core of their operation, along with accessories such as end pipes, brackets, flanges, conduits, etc. They are a type of compensating element. Utilizing the excellent伸缩 deformation of the corrugated tube, they absorb size changes in pipelines, conduits, vessels, etc., caused by thermal expansion and contraction, or compensate for axial, lateral, and angular displacements of pipelines, conduits, and vessels. They can also be used for noise reduction and vibration control. Widely used in modern industry, in heating systems, compensators are necessary to prevent pipeline deformation or damage due to thermal expansion or temperature stress when heating pipes. They compensate for the thermal expansion of the pipes, thereby reducing the stress on the pipe walls and the forces acting on valves or bracket structures.