Pipeline compensators, especially corrugated compensators, work on the principle of utilizing the elastic properties of corrugated pipes to absorb and compensate the displacement of the pipeline system caused by factors such as thermal expansion and contraction, vibration, installation errors or foundation movement. This principle is explained in detail below:
Thermal expansion and contraction compensation： When the temperature of the fluid within the pipe changes, the pipe can elongate or shorten because of the coefficient of thermal expansion of the material. The bellows in the corrugated compensator can be extended or compressed in the axial direction through its unique wave structure, thus absorbing the linear displacement of this part and preventing the pipe from being subjected to excessive stress.
Lateral displacement compensation： In addition to axial displacement, the corrugation compensator can also compensate for lateral displacement. Lateral displacement refers to the displacement in the direction perpendicular to the pipe axis. Some specially designed corrugated compensators (such as hinged or gimbal) can absorb this displacement by bending the bellows.
Angular displacement compensation： Angular displacement refers to the change in angle between the ends of the pipe. Corrugated compensators can also absorb this displacement through the elastic deformation of their bellows, preventing damage to the pipe structure due to angular changes.
Absorbs vibration and noise： The corrugated compensator can also absorb the vibration and noise generated during the operation of the equipment, reduce its influence on the pipeline and connecting equipment, and improve the stability and life of the whole system.
Response to foundation settlement and earthquakes： In some areas with unstable geological conditions or frequent earthquakes, the corrugated compensator can absorb the pipeline deformation caused by ground movement and protect the pipeline system from damage.
To achieve the above functions, corrugated compensators are usually made of materials with high elasticity and corrosion resistance, such as stainless steel, to ensure their reliability and long life under harsh working conditions. In design and installation, it is also necessary to take into account the maximum compensation capacity and working pressure of the compensator, as well as to ensure that it is free from external constraints and can freely complete the expected displacement compensation.
In summary, the working principle of the pipeline compensator is to use the elastic deformation ability of the bellows to absorb and relieve the displacement and stress generated by the pipeline system under different conditions, thus protecting the pipeline system from damage and ensuring its normal operation.