The pipeline thermal compensation uses high-quality corrugated pipe compensator, installed in the casing, and directly buried. There is no need to set up observation wells, the construction is convenient and the construction period is short. It can also be used as an alarm signal tube for daily operations. The pipeline thermal compensation uses high-quality bellows compensator, installed in the casing, and does not directly bury the observation well. It is suitable for conveying steam or other media below 350℃. It depends on the relative position of the metal bellows and the conveying medium, that is, the conveying medium is outside the metal bellows, and the metal bellows accepts the external pressure of the conveying medium.

Literally speaking, this kind of bellows is called an axially external pressure bellows; similarly, the conveying medium is inside the metal bellows, and the metal bellows accepts the internal pressure of the conveying medium. This kind of bellows is called an axial internal pressure bellows. Single-layer corrugated pipes are widely used. The multi-layer corrugated pipe has the advantages of high strength, good durability, and small stress, and has been widely used in important measurements. The outer protective layer of the product is made of steel pipe, which has high strength, convenient maintenance and long service life.

Among them, the corrugated compensator is more commonly used. It has the following functions: 1. Compensate and absorb the axial, lateral and angular thermal deformation of the pipeline; 2. Absorb the vibration of the equipment and the influence of the equipment vibration on the pipeline; 3. Absorb the earthquake And pipeline deformation caused by ground subsidence.