What is the function of expansion joint

What is the function of expansion joint
Expansion joint consists of forging or electric welding, the position of trapezoidal round silicone seal ring. Under the action of the cover and spiral bolts, the basic principle of plastic reduction deformation is used to deform the sealing ring degree and carry out the packing seal in the middle of the expansion tube surface of the expansion joint itself. The expansion joint material and sealing ring are adopted in strict accordance with performance indicators and customer regulations. The expansion joint material is installed with high toughness anti-corrosion coating on the outside, and the connecting foot bolt at the expansion joint is high toughness lime powder steel or stainless steel.
It has a certain axial and radial offset because it has a certain gap in the middle of the expansion pipe. Therefore, the expansion joint can reasonably compensate and reduce the driving force of the pipeline blind, and also facilitate the installation, maintenance and replacement of centrifugal pumps and gate valves. Expansion joint is actually a more ideal supporting facility for pipeline installation and operation.
Expansion joints can expand and contract radially in a certain area and also get rid of different radial deviations of pipeline connections from a certain angle, which can facilitate the installation and disassembly of gate valve pipelines to a great extent, and can expand and contract at will in the length adjustment allowed for the pipeline. Once they are adjusted by large lengths, they are positioned to ensure the reliable operation of the pipeline. The key of expansion joints is to ensure the safe operation of pipelines with the following functions: to compensate for the absorption of radial, lateral and angular thermal deformation of pipelines; to digest and absorb the vibration of mechanical equipment and reduce the harm of mechanical equipment vibration on pipelines; to digest and absorb the deformation of pipelines caused by large earthquakes and collapses. The expansion joint provides great convenience for the installation and disassembly of various water supply and drainage pipelines, cooling towers, centrifugal pumps, intelligent water meters, gate valves, and has a good buffer effect on the temperature difference expansion of long-distance pipelines.