Hinged Expansion Joint is a pipeline connector, consisting of a bellows, two sets of hinged plates connected to the end pipe and a pair of pins, etc. It is a flexible device. Hinged expansion joints are usually used as a group of two or three for absorbing transverse displacements in one or more directions in a single plane pipe system. It is mainly used to solve the problem of stress caused by temperature change, vibration and pipe structure during the use of pipeline, so as to reduce the stress of pipeline and prevent pipeline leakage. Hinged expansion joints absorb the angular displacement caused by thermal expansion or contraction of pipelines, conveying channels or containers through the change of their angle, and the amount of compensation is proportional to the distance between the two products.

Structural composition

Bellows: Bellows is the main working body of hinged expansion joint, which is elastic and can absorb the displacement of pipeline.

Hinge plate: The hinge plate is connected to the end pipe and connected by a pin to limit the expansion and contraction of the expansion joint, so that it can only produce angular displacement, thus absorbing lateral displacement.

Pin: The pin is used to connect the hinge plate to the bellows to ensure flexible rotation and displacement absorption of the expansion joint.

Advantages

Strong elongation and contraction capacity: The hinged expansion joint has a certain elongation and contraction capacity, which can effectively reduce the stress caused by temperature changes in the pipeline and protect the integrity and safety of the pipeline.

Strong pressure-bearing capacity: after rigorous testing and selection of materials, hinged expansion joints have strong pressure-bearing capacity, can withstand high pressure and high temperature and other extreme working conditions, to ensure the safe operation of the pipeline system.

Good corrosion resistance: stainless steel, carbon steel, zirconium alloy and other corrosion-resistant materials are usually used, which can effectively resist strong acid, alkali, high concentration of brine and other corrosive media to extend the service life.

Convenient installation: Because of the flange connection, it is very convenient to install and maintain without large-scale construction and dismantling, which greatly shortens the production downtime and maintenance costs.