Dynamic Cable Buoyancy Layout to Prevent Seabed Contact
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Solution Overview
Problem
The linear shape of dynamic cables is prone to depression and contact with the seabed surface due to bending and twisting, leading to reduced lifespan and use, especially in marine environments.
Innovation Solution
A dynamic cable protection system featuring buoyancy devices and connecting devices that maintain a multi-humped underwater shape, preventing excessive bending and contact with the seabed by using buoyancy and connecting mechanisms to stabilize the cable's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If cables are fixed rigidly to the tower, then cable positioning is stable, but cable damage occurs during tower movement or sinking
Solution Approach 1:
The cable protection system transitions from a static rigid fixation to a dynamic adjustable system. The cable guide elements can be repositioned along the tower height, and the tensioning system allows real-time adjustment of cable tension, enabling the system to adapt to tower movements and sinking while maintaining both positioning stability and cable integrity.
Solution Approach 2:
The cable support system is divided into multiple cable guide elements distributed at different heights on the tower, rather than a single fixed point. This segmentation allows different portions of the cable to be supported at optimal locations, distributing mechanical stresses and preventing damage while maintaining overall positioning stability.
2Strength
If cables are laid loosely on the tower, then cable damage is reduced, but cable positioning becomes unstable
Solution Approach 1:
Cable guide elements serve as intermediary components between the tower structure and the cables. These guides provide localized support and positioning without requiring rigid fixation, allowing cables to maintain stable positions while avoiding direct contact that could cause damage during tower movements.
Solution Approach 2:
The system employs dynamic tensioning mechanisms that allow cables to maintain stable positioning while accommodating tower movements. The tensioning system can be adjusted in real-time to prevent cable sagging or instability without imposing rigid constraints that would cause damage.
3Ease of manufacture
If manual cable tensioning is used, then installation is simple, but productivity is low and positioning precision is poor
Solution Approach 1:
The system replaces manual mechanical tensioning with an automated tensioning system that can be controlled remotely or through programmable logic controllers. This substitution maintains the mechanical function of cable tensioning while dramatically improving productivity and positioning precision through automated control mechanisms.
Solution Approach 2:
The cable tensioning system incorporates self-adjusting mechanisms that automatically maintain optimal tension levels based on pre-programmed parameters or sensor feedback. This reduces the need for continuous manual intervention while maintaining high productivity and precise positioning throughout the installation and operation phases.
4Ease of manufacture
If manual cable tensioning is used, then equipment cost is low, but manufacturing precision is poor
Solution Approach 1:
The system replaces imprecise manual tensioning with automated control systems that use sensors, actuators, and control algorithms to achieve precise cable positioning. This substitution increases manufacturing precision while keeping the overall system cost reasonable through the use of standardized components and modular architecture.
Solution Approach 2:
The cable positioning system incorporates feedback mechanisms through sensors that monitor cable position, tension, and tower movement. This feedback is fed back to control systems that automatically adjust tensioning and positioning, ensuring high precision while using cost-effective sensor and controller technologies.
Data Source
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AI summary
The present application provides a dynamic cable protection system and a wind power system, where the dynamic cable protection system includes: a dynamic cable, a plurality of first buoyancy devices, a plurality of second buoyancy devices, and a plurality of first connecting devices, where the dynamic cable is located in a water environment, and the dynamic cable is configured to transmit a signal or electrical energy between a water-surface device and an underwater device, the plurality of first buoyancy devices are spaced apart on the dynamic cable, the second buoyancy devices float on a water surface; he second buoyancy devices are connected to the dynamic cable through the first connecting devices, and positions where the first connecting devices are connected to the dynamic cable are located between two adjacent first buoyancy devices; the second buoyancy devices are configured to define lowest positions of trough segments of the dynamic cable, and the trough segments are connected between two adjacent crest segments. The present application is used to avoid the dynamic cable being depressed to come into contact with a seabed surface, which affects the use and lifespan of the dynamic cable.