Bending restrictors are mainly used to protect submarine cables or flexible pipes from excessive bending. They are mainly used in J-tube outlets, cable landing points, platform connections in submarine cable laying, dynamic risers in offshore wind farms, flexible risers in submarine oil and gas fields, submarine umbilical cables, and other marine projects.
During the installation or operation phase of marine engineering, when the flexible pipe generates static loads, a bend limiter is required to prevent excessive bending and buckling. The bend limiter consists of two polyurethane half shells, which are usually fixed with bolts and nuts to fix the cable inside to protect the cable.
Main features
● Split design allows the bend restrictor to be installed after pipeline termination
● Easy to install onshore and offshore
● Polyurethane has low density and light weight in water, reducing pipeline burden
● Polyurethane is wear-resistant and tear-resistant, with a normal service life of 25 years
Material specifications
Material name: ether-based polyurethane
Hardness: 80D--85D(customizable)
Specific gravity: 1.04---1.60
Bend limiter application scenarios
• Submarine cable laying project
Application location: J-tube outlet, cable landing point, platform connection port, etc.
Function: Prevent cable from breaking or being damaged due to waves, tides or dragging with too small bending radius
• Offshore wind farm
Dynamic cable connection (wind turbine to substation)
Function: Protect the cable structure at the dynamic riser or floating connection, prevent fatigue damage, and ensure long-term operation stability
• Submarine oil and gas field development
Application in flexible risers, submarine umbilicals and flowlines
Function: Prevent flexible pipes from bending sharply due to the movement of platforms or floating bodies, thereby improving system reliability
• FPSO (Floating production storage and offloading) system
Applied to the cable and pipeline interface connected to the floating body
Function: Prevent excessive bending and fatigue cracking of the pipe and cable interface due to hull movement, waves, etc.
• Marine renewable energy equipment
Such as tidal energy devices, cable and anchoring systems for wave energy conversion equipment
Function: Provide necessary bending protection for cables in frequent movement to prevent mechanical fatigue
• Ship-to-shore cable connection and port laying system
When the cable crosses the deck, the edge of the dock or is laid in the air
Function: Reduce the risk of damage caused by local excessive bending
Please contact Philson, our engineering team will optimize the design to meet your specific needs for subsea energy solutions.
