Lisega’s fittings for dynamic applications are elements that are mounted external to the pipeline to protect it from damage caused by dynamic events.
Dynamic events are classified as internal such as water hammer, safety valve trips, thermal shocks; external are hurricanes, tornadoes, earthquakes, earthquakes and explosions.
All the above events, besides seriously affecting the pipeline and the infrastructure that contains it, also affect the equipment connected to it, such as boilers, pumps, turbines, compressors, heat exchangers, reactors, valves, etc. All these events can cause disasters in industrial plants.
The operating mode of Lisega Type 31 hydraulic snubbers is based in principle on the same concept as Type 30. The particularities of the size require a different arrangement of the equalizing reservoir. At the same time, a different arrangement of the valves is also necessary.
This is why the big question for those responsible for industrial plants is: Are the critical pipelines protected in case of such an event?
The fittings for dynamic applications Lisega to contain this type of phenomena are:
- Snubbers / shock absorbers
- Energy absorber
- Rigid struts
For the connection of these elements, Lisega has a complete portfolio of dynamic connectors such as tightening clamps, washers and clamps; all of them allow the perfect perfomance of the accessories.
The absorption and transfer of moving loads requires specially designed supports. A complete portfolio of solutions is provided covering all fields of application with the ideal component.
The use of dampers is preferred in thermally operated plant components. In a dynamic event, dampers instantly provide a fixed and practically rigid connection between the component to be secured and the surrounding structure. In this way, the dynamic energy of the abrupt displacement can be absorbed at once and dissipated without causing damage. Thermal displacements during routine operation remain free of any significant resistance, thanks to the specialized operating principles of the dampers.
Lisega dampers are characterized by superior functionality and durability due to:
- Corrosion resistant materials.
- Radiation and wear resistant sealing systems.
- Vibration resistant guides.
- Pressurized hydraulic system for optimum sealing.
- Dynamic functional behavior.
- Tested and approved for a minimum of 23 years of maintenance-free operation.
- Service life of 60 years.
- Certified by suitability tests according to acc. to KTA 3205.3 and approvals according to ASME-NCA 3800.
For the correct selection and use of the elements for Lisega dynamic events, there must always be a previous dynamic study of the piping system.