伸缩缝

Metal bellows expansion joint

Corrugated expansion joint is a kind of compensation element. Utilize the effective expansion and contraction of the bellows of its working body to absorb the dimensional changes of pipelines, ducts, containers, etc. caused by thermal expansion and contraction, or to compensate for the axial, lateral and angular displacement of pipelines, ducts, containers, etc. It can also be used to reduce noise and vibration.

After the installation of the piping system is completed, the bolt auxiliary positioning components and fasteners used for installation and transportation on the corrugated expansion joints should be removed as soon as possible, and the limit device should be adjusted to the specified position according to the design requirements, so that the piping system has sufficient environmental conditions. Compensation ability.

During the hydraulic test, the secondary fixed pipe frame at the end of the pipeline with expansion joints should be reinforced to prevent the pipeline from moving or rotating. For expansion joints used for gaseous media and their connecting pipelines, attention should be paid to whether temporary supports are needed when filling with water. The 96 chloride ion content of the water pressure test cleaning solution does not exceed 25PPM.

The insulation material in contact with the compensator bellows should not contain chlorine.