The absorption and transfer of dynamic loads requires specially designed supports. Product group 3 provides a complete product portfolio that covers all fields of application with the ideal component.
- Mode of operation
- Scope of performance
- LISEGA Benefits
- Mounting examples
The use of snubbers is preferred in thermally operated plant components. In a dynamic event, snubbers instantaneously provide a fixed, practically rigid connection between the component to be secured and the surrounding structure. In this way the dynamic energy from abrupt displacement can be absorbed at once and harmlessly dissipated. The thermal displacements during routine operation remain free of any significant resistance thanks to the specialised operating principles of the snubbers.
Mode of operation
The function of LISEGA hydraulic snubbers type 30 is controlled by a main control valve positioned axially in the hydraulic piston. On slow movement of the piston, the valve is held open by spring force and the hydraulic fluid can flow freely from one cylinder chamber into the other. On rapid piston movement above a velocity limit, back pressure develops on the valve disk and closes the valve. The hydraulic flow is interrupted and the movement blocked.
The operational mode of LISEGA hydraulic snubbers type 31 is in principle based on the same concept as of type 30. The particularities of size require a different arrangement of the compensating reservoir. At the same time, a different arrangement of the valves is also necessary.
Scope of performance
3 kN to 5,000 kN / 674.43 lbf to 1,124,044.72 lbf
100 to 750 mm / 3.94 to 29.53 in
LISEGA snubbers are characterised by superior functionality and durability due to:
- Type 30
- Type 31 front view
- Type 31 rear view
- Corrosion-resistant materials
- Radiation-resistant and wear-resistant sealing systems
- Vibration-resistant guides
- Pressurised hydraulic system for optimal sealing
- Dynamic functional behaviour
- Tested and approved for minimum 23 years maintenance-free operation
- Lifespan of 60 years
- Certified by suitability tests acc. to KTA 3205.3 and approvals acc. to ASME-NCA 3800