Dynamic Cable Assembly Layout for Shallow-Water Wind Drift Control
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Solution Overview
Problem
Existing dynamic cables in shallow water floating wind power systems are prone to wide-range drifting under severe sea conditions, leading to collisions with the floating fan or anchor chains and subsequent failure.
Innovation Solution
A dynamic cable assembly featuring buoyancy units and connection units, including elastic cables and mooring chains, defines a line shape with valley and peak sections, absorbing impact loads and preventing wide-range drifting, while monitoring components ensure timely alerts for excessive stress or displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the dynamic cable is allowed to drift freely to meet floating fan movement, then the floating fan can operate in a large range, but the dynamic cable collides with the floating fan or anchor chain causing failure
Solution Approach 1:
The patent pre-defines the line shape of the dynamic cable using buoyancy blocks and clump weights before operation. This preliminary configuration creates a controlled 'S' or 'W' shape that allows the cable to accommodate floating fan drift within a safe range while preventing excessive drift that would cause collision with the floating fan or anchor chain, thus resolving the contradiction between drift adaptability and collision avoidance
Solution Approach 2:
The patent changes the physical parameters of the dynamic cable system by adding buoyancy blocks (providing upward buoyant force) and clump weights (providing downward gravitational force) at specific positions. These parameter changes create a stable line shape configuration that limits the cable's drift range, allowing the floating fan to move freely within safe boundaries while preventing collision failures
2Strength
If buoyancy block and clump weight are used to form line shape, then the dynamic cable can relieve axial tension during drift, but the structure becomes complex and installation difficult
Solution Approach 1:
The patent combines the buoyancy block and clump weight into a single integrated assembly that is pre-installed on the dynamic cable. This merging reduces the number of separate components and simplifies the installation process while maintaining the axial tension relief function through the coordinated action of buoyancy and gravity forces on the dynamic cable
3Reliability
If the dynamic cable is constrained to prevent wide drifting, then collision failure is avoided, but the floating fan's drift capability is limited
Solution Approach 1:
The patent applies local quality by positioning buoyancy blocks and clump weights at specific locations along the dynamic cable to create a controlled line shape. This localized configuration allows the cable to provide axial tension relief in the vertical direction while maintaining horizontal drift capability within safe boundaries, thus avoiding collision without excessively limiting the floating fan's operational range
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The dynamic cable assembly maintains structural integrity and transmission stability by limiting excessive bending and impact, reducing collisions and ensuring continuous operation even in severe sea conditions.
Implementation Method 1
a top end of the elastic cable is fixedly connected with the mooring chain near a bottom end of the mooring chain
Implementation Method 2
both the buoyancy block and the clump weight need to be fixed to the dynamic cable, with the buoyancy block applying upward buoyancy to the dynamic cable
Implementation Method 3
the elastic cable includes a first connecting plate, a second connecting plate and a spring, one end of the spring is fixed to the first connecting plate, and the other end of the spring is fixed to the second connecting plate; when an impact on the dynamic cable is too large, the elastic cable may play a buffering role through extension of the spring
Data Source
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AI summary
A shallow water floating wind power system and a dynamic cable assembly thereof. The dynamic cable assembly for a shallow water floating wind power system includes a dynamic cable (100), a plurality of buoyancy units and a plurality of connection units (300), the connection units (300) each include a mooring chain (310) and an elastic cable (320) and an anchor (330), and the dynamic cable (100) is connected with a seabed (800) through the mooring chain (310) and the elastic cable (320); the connection units (300) and the buoyancy units jointly define a line shape of the dynamic cable (100), and the line shape of the dynamic cable (100) includes a first valley section (110), a plurality of peak sections (120) and a second valley section (130) between two adjacent peak sections (120); the buoyancy units each include a plurality of buoyancy blocks (200) provided at top of the peak section (120), and the connection units (300) are provided at a side of the peak sections (120) away from the floating fan (700). A shallow water floating wind power system includes a floating fan (700) and a dynamic cable assembly, the floating fan (700) is connected with the dynamic cable assembly through a bend limiting cylinder (500). For the dynamic cable assembly for a shallow water floating wind power system, when the sea condition is severe, the dynamic cable (100) will not drift in a wide range, and when impact on the dynamic cable is too large, the elastic cable (320) may reduce impact load on the dynamic cable (100) and avoid the damage at the position where the dynamic cable (100) is connected with the mooring chain (310) due to excessive impact.