Offshore Flotation System with Dynamic Air Pressure Control
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Solution Overview
Problem
Offshore power generation platforms face challenges in maintaining structural integrity and buoyancy due to seawater penetration through cracks in concrete buoyant bodies, and existing solutions require large, heavy, and inefficient ballast fluid systems to maintain equilibrium during storms.
Innovation Solution
A flotation system using multiple buoyant bodies with high-pressure air and ballast water, connected by ballast water flowing tubes and a high-pressure tank, with an equilibrium sensor and controller to dynamically adjust air pressure and ballast water flow to maintain stability and balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick concrete wall is used for the buoyant body, then structural strength is improved, but transportation difficulty increases
Solution Approach 1:
The buoyant body is divided into multiple hollow portions separated by partition walls, allowing the structure to be segmented into manageable sections that can be transported separately and assembled on-site, reducing transportation difficulty while maintaining structural strength
Solution Approach 2:
The buoyant body uses composite construction with concrete walls and internal air bags, combining the strength of concrete with the buoyancy and flexibility of air-filled chambers, achieving both structural integrity and transportation feasibility
2Reliability
If compressed air is injected into air bags to prevent seawater penetration, then buoyancy is maintained, but the system cannot effectively cope with equilibrium upset during continuous wind or storms
Solution Approach 1:
The air bag system is made dynamic by enabling air injection and discharge operations, allowing the buoyancy of individual hollow portions to be adjusted in real-time based on equilibrium sensor feedback, enabling the system to adapt to changing sea conditions and maintain stability during storms
Solution Approach 2:
An equilibrium sensor detects the tilt angle of the floating structure and provides feedback to the control unit, which then adjusts air pressure in specific air bags to correct equilibrium deviations, creating a closed-loop control system that maintains stability under varying environmental conditions
3Reliability
If air pressure corresponding to draft pressure is injected, then buoyancy is provided, but the buoyant body must be extremely large in scale to stably float a large and heavy structure
Solution Approach 1:
The system changes the parameter of air pressure from atmospheric pressure to high pressure (greater than draft pressure), allowing compact air bags to generate sufficient buoyant force to support large and heavy structures without requiring extremely large volume
4Adaptability or versatility
If ballast fluid flow rate is controlled by pumps in each stabilizing column, then equilibrium is maintained, but the pumps are large in size, heavy in weight, and slow in responsiveness
Solution Approach 1:
The system uses pneumatic pressure transmission through ballast water flowing tubes to transfer ballast fluid between hollow portions, replacing mechanical pumps with a pressure-driven fluid transmission system that achieves rapid equilibrium adjustment without large, heavy pumping equipment
Solution Approach 2:
Ballast water flowing tubes serve as intermediaries to transfer ballast fluid between different hollow portions of the buoyant body, enabling equilibrium adjustment without requiring pumps at each location, thus improving responsiveness while reducing system complexity
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
This system reduces overall weight, facilitates transportation, and ensures quick responsiveness in maintaining equilibrium, enabling easy manufacturing, maintenance, and repair while preventing surface corrosion.
Implementation Method 1
a high-pressure tank supplying the high-pressure air into the multiple buoyant bodies
Implementation Method 2
multiple buoyant bodies each containing a high-pressure air and ballast water therein to create buoyancy
Implementation Method 3
ballast water flowing tubes through which the ballast water contained in the multiple buoyant bodies flows with respect to each other
Implementation Method 4
a compressor replenishing air pressure present in the high-pressure tank
Data Source
AI summary
A flotation system for an offshore power generation platform comprises: multiple buoyant bodies each containing a high-pressure air and ballast water therein to create buoyancy; connecting members connecting the multiple buoyant bodies to each other; ballast water flowing tubes through which the ballast water contained in the multiple buoyant bodies flows with respect to each other; a high-pressure tank supplying the high-pressure air into the multiple buoyant bodies; a compressor replenishing air pressure present in the high-pressure tank; an equilibrium sensor sensing an equilibrium state of each of the multiple buoyant bodies and transmitting a signal; and a controller controlling, in response to the signal from the equilibrium sensor, an amount of air supplied from the high-pressure tank to the buoyant body and an amount of air discharged from the buoyant body.