Metal Expansion Joints are also called compensators, or expansion joints. It consists of bellows (an elastic element) that constitutes its working body and accessories such as end tubes, brackets, flanges, and conduits.
Metal Expansion Joints are a flexible structure installed on the vessel shell or pipe in order to compensate for the additional stress caused by temperature differences and mechanical vibration. Utilizing the effective telescopicity of its working body, the bellows.
Metal expansion joints (also called compensators) are devices used in piping systems to compensate for axial, lateral or angular displacements of pipes caused by temperature changes, mechanical displacement or other factors. They are widely used in industries such as power, chemical, petroleum, construction, and metallurgy.
Main types：
Bellows expansion joint: It is composed of one or more bellows and can withstand axial, lateral and angular displacement.
Sleeve expansion joint: It is mainly used for axial displacement compensation and consists of an inner sleeve and an outer sleeve.
Spherical expansion joint: It can withstand multi-directional displacement and is mainly used in complex piping systems.
Rotational expansion joint: It is used to compensate for the rotational displacement of the pipeline.
Main features
High temperature and corrosion resistance: Metal expansion joints are usually made of stainless steel or other corrosion-resistant materials and can be used for a long time in high temperature and corrosive environments.
Good flexibility: It can effectively compensate for various displacements of the pipeline system and prevent damage to the pipeline due to thermal expansion and contraction or other reasons.
Excellent sealing performance: Through special design and manufacturing processes, the sealing performance of the expansion joint is ensured to prevent medium leakage.
Easy installation: Compact design, easy installation, and reduced maintenance workload.
Advantage:
Metal Expansion Joints(compensators) have the advantages of reliable operation, good performance, and compact structure.
Application areas:
Metal Expansion Joints (compensator), as a freely scalable elastic compensation element, has been widely used in chemical industry, metallurgy, nuclear energy and other departments. There are many forms of expansion joints used on containers. In terms of corrugated shape, U-shaped expansion joints are the most widely used, followed by Ω-shaped and C-shaped expansion joints. In terms of structural compensation, expansion joints used on pipelines are divided into hinge type, pressure balance type and universal joint type. It can also be used for noise reduction, vibration reduction, and heating. In order to prevent the pipe from being deformed or damaged due to thermal elongation or temperature stress when the heating pipe heats up, a compensator needs to be installed on the pipe to compensate for the thermal elongation of the pipe. This reduces the stress on the pipe wall and the force acting on the valve or bracket structure.