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Construction of multilayer expansion joints
Types of fabric expansion joints
Single- and multi-wave constructions
Construction of fabric expansion joints
Types of fabric inserts fixation
Construction of multilayer expansion joints
For being used in high temperature environment heat insulation materials can be applied in the construction of expansion joints. They take the main load from high temperatures. Usually this material is used in the construction with built-in metal unit. This type of construction has some advantages: flexible part is remote on the certain distance from the flow, also it is protected by heat insulation materials and telescopic protective screen. This type of expansion joint is applied in the system with exclusive standards of reliability and safety. Good example of application is installation of the expansion joints in exhausting systems of gas turbine power stations and gas piping equipment.
Example of the multilayer fabric expansion joint.
| 1 | Flange reinforcement protects flexible part from temperature damage caused by heating of pipeline, flanges or clamps. |
| 2 | Insulating outer layer is made of special materials, it saves flexible part from aggressive operating and surrounding environment and keeps fabric form. |
| 3 | Reinforcing (armour) layer provides pressure resistance of the form. Materials: silicate or glass fiber. |
| 4 | Gas proof (gas tight) and heat-resistant layer provides temperature and gas insulation. |
| 5 | Insulating inner layer prevents thermal and mechanical damage of the inside materials. Materials: silicate, glass or ceramic fiber. |