Arc-Shaped Wing Plates for Vortex-Induced Vibration Suppression
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Solution Overview
Problem
Vortex-induced vibrations in marine structures such as risers and platform pile legs pose safety risks and hinder efficient energy utilization from marine resources, necessitating a solution that can both suppress vibrations and generate power from these vibrations.
Innovation Solution
A device utilizing arc-shaped wing plates with rough surfaces, comprising a rotary swinging system and a collector system, where the wing plates made of zinc oxide material rotate and deform under marine currents, driving steering bearings and telescopic power generation cylinders to induce current, while the flexible tail plates and trumpet-shaped deflector holes disrupt the boundary layer and wake vortex, effectively suppressing vibrations and generating power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional smooth cylindrical structures are used in marine environments, then structural simplicity is maintained, but vortex-induced vibrations occur causing safety risks and energy loss
Solution Approach 1:
The patent applies local quality by introducing arc-shaped wing plates with rough surfaces at specific locations on the cylindrical structure. These wing plates have asymmetric geometry with different surface characteristics (rough surfaces) that locally modify the flow field to suppress vortex formation, while the rest of the structure maintains its original simple cylindrical form.
Solution Approach 2:
The patent converts the harmful vortex-induced vibrations into beneficial mechanical energy. The wing plates are designed to swing in response to flow forces, and this swinging motion drives a power generation system with magnets and coils, transforming the previously harmful vibrational energy into electrical energy for self-powering the monitoring equipment.
2Reliability
If vibration suppression devices are added to marine structures, then vortex-induced vibrations are reduced, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges multiple functions into a single integrated system. The arc-shaped wing plates serve both as flow control elements for vibration suppression and as drivers for the power generation system. The rough surface features on the wing plates simultaneously affect flow attachment and enhance the swinging motion, combining flow control and energy harvesting functions in one component.
Solution Approach 2:
The patent employs dynamic elements where the wing plates are free to swing rather than being fixed. This dynamic configuration allows the wing plates to adapt to varying flow conditions, automatically adjusting their orientation to maintain effective vortex suppression while driving the power generation mechanism. The flexibility of the mounting system enables the structure to respond naturally to flow forces.
3Reliability
If arc-shaped wing plates with rough surfaces are installed on collector risers, then vortex-induced vibrations are suppressed and marine current energy is converted to electricity, but manufacturing precision and installation difficulty increase
Solution Approach 1:
The patent segments the flow control and power generation functions into separate but integrated components. The arc-shaped wing plates are designed as modular units that can be manufactured independently and then installed on the collector riser. This segmentation allows for standardized production of the wing plates with their specific geometric features, making the manufacturing process more manageable despite the precision requirements.
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 device efficiently converts marine current energy into electricity while suppressing vortex-induced vibrations, providing a green and environment-friendly power generation mode suitable for large-scale implementation.
Implementation Method 1
the hemispherical bulges and the trumpet-shaped deflector holes disturb the boundary layer around flow
Implementation Method 2
a three-dimensional structure of the wake vortex is destroyed, the formation and development of the vortex are suppressed
Implementation Method 3
The nanometer material arc-shaped power generation wing plates are made of a zinc oxide material... the bending and the deforming of the nanometer material arc-shaped power generation wing plates... produce current
Implementation Method 4
Three telescopic power generation cylinders are mounted in the middle of the nanometer material arc-shaped power generation wing plates... so that the arc-shaped magnets and induction coils displace relatively to form induced current
Data Source
AI summary
The present disclosure relates to a device and a method for swinging power generation and vibration suppression by using arc-shaped wing plates with rough surfaces. The device consists of two parts, namely, a rotary swinging system and a collector system. The rotary swinging system includes a collector riser, steering bearings, nanometer material arc-shaped power generation wing plates, and flexible tail plates. The collector system includes telescopic power generation cylinders, a waterproof electric slip ring, and a waterproof power transmission line. The suppression of energy-consumption-free vortex-induced vibration is realized under the combined action that the nanometer material arc-shaped power generation wing plates divide a flowing space and adjust a flow direction, the nanometer material arc-shaped power generation wing plates drive the flexible tail plates to swing to destroy a tail vortex street, and hemispherical bulges and trumpet-shaped deflector holes disturb a boundary layer around flow.