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China Suppliers Factory of Stainless Steel Metallic Bellows Corrugated Expansion Joints for Thermal Expansion and Vibration Control
Metal Expansion Joints also called metal corrugated compensator, it composed by metal bellows and accessories such as end pipe, support, flange and conduit. Metal expansion joints can be used to absorb the dimensional changes of pipelines, conduits and containers caused by thermal expansion and cold contraction, or to compensate the axial, transverse and angular displacement of pipelines, conduits and containers. It also can be used for noise reduction and vibration reduction.
Functions
- Compensate the axial, lateral and angular thermal deformation of the absorption pipeline.
- The expansion and contraction of the corrugated compensator is convenient for the installation and disassembly of the pipeline.
- Absorb equipment vibration and reduce the impact of equipment vibration on the pipeline.
- Absorb the deformation of the pipeline caused by the earthquake and ground subsidence.
Applications
Acid, alkali, corrosion, oil, hot water, cold water, compressed air, compressed weather, flue gas pipeline, pulverized coal pipeline, desulfurization pipeline, etc.
Installation
- 1 The type, specification and pipeline configuration of the metal expansion joints should be checked before installation, and it must meet the design requirements.
- 2 For expansion joints which with inner sleeves, care should be taken to ensure that the direction of the inner sleeve is consistent with the flow direction of the medium, and the hinge rotation plane of the hinge-type compensator should be consistent with the displacement plane.
- 3 The expansion joints which need to be "cold-tightened", and auxiliary components used for pre-deformation should be removed after the pipeline is installed.
- 4 Strictly prohibited to use deforming the corrugated compensator to adjust the installation tolerance of the pipeline, avoid to affect the normal function of the compensator, or will reduce the service life and increase the load of the piping system, equipment and supporting components.
Frequently Asked Questions (FAQ)
What are metal expansion joints and what are they composed of?
Metal expansion joints, also known as metal corrugated compensators, consist of metal bellows and essential components like end pipes, supports, flanges, and conduits. They absorb pipeline dimension changes caused by thermal expansion, cold contraction, and displacement.
What functions do metal expansion joints serve?
They compensate for axial, lateral, and angular thermal deformation of pipelines, simplify installation and disassembly, minimize the impact of equipment vibration, and absorb pipeline movement caused by earthquakes or ground subsidence.
In which applications can metal expansion joints be used?
They are suitable for systems handling acid, alkali, corrosive substances, oil, hot and cold water, compressed air, flue gas, pulverized coal, desulfurization processes, and other pipeline systems.
What precautions should be taken before installing a metal expansion joint?
Before installation, always check that the type, specifications, and pipeline configuration of the metal expansion joints align with the project design requirements.
Can I deform the compensator to adjust for pipeline installation tolerances?
No, deforming the corrugated compensator to adjust for installation tolerances is strictly prohibited. Doing so can impair its functionality, decrease service life, and increase stress loads on the piping system, equipment, and supports.
How should expansion joints with inner sleeves be installed?
For joints with inner sleeves, make sure the direction of the inner sleeve aligns with the flow direction of the medium, and ensure the rotation plane of the hinge-type compensator matches the displacement plane.