Pile Scour Protection Channel for Bidirectional Tidal Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing scour protection methods for piers in marine environments are inadequate under extreme hydrodynamic conditions, as they fail to efficiently prevent erosion and maintain effective power generation during bidirectional tidal flows.
Innovation Solution
A scour protective device with bidirectional flow power generation, featuring smooth normal distributional surface guide walls, vertical baffle walls, variable-diameter scour prevention bottom plates, and semicircular cover plates, forming symmetric smooth water flow channels around piles to reduce scour and enhance power generation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional riprap protection is used around piers, then some scour protection is provided, but strong eddy currents are formed around the riprap which exacerbate bed surface scour and reduce protection effectiveness
Solution Approach 1:
The guide wall is designed with a curved surface that has a normal distribution of angles relative to the incoming flow direction. This curved geometry smoothly redirects water flow around the pile, eliminating the sharp edges that generate strong eddy currents in traditional riprap structures, thereby reducing harmful flow patterns while maintaining scour protection.
Solution Approach 2:
The guide wall's surface is characterized by a normal distribution of angle parameters, where the angle between the guide wall surface and the incoming flow direction follows a normal distribution pattern. This parameter optimization allows the structure to efficiently diffuse flow energy and reduce eddy current formation while maintaining effective scour protection.
2Productivity
If unidirectional hydropower generation is used, then power is generated in one flow direction, but energy from the opposite flow direction is wasted
Solution Approach 1:
The hydropower generation system is designed to perform the same power generation function in both upstream and downstream flow directions. The guide wall structure and turbine arrangement allow water to drive the turbine regardless of flow direction, enabling the system to utilize energy from both ebb and flood tides, effectively doubling the productive time compared to unidirectional systems.
Solution Approach 2:
The bidirectional design ensures that power generation action continues throughout the entire tidal cycle. While traditional unidirectional systems only generate power during one phase of the tide, this system maintains continuous useful action by capturing energy from both the incoming and outgoing tidal flows, eliminating idle periods.
3Productivity
If smooth guide walls with normal distribution surfaces are constructed, then water flow resistance is reduced and power generation efficiency is improved, but device complexity increases
Solution Approach 1:
Instead of using complex variable geometry or adjustable components, the guide wall employs a fixed surface whose angle relative to the incoming flow follows a normal distribution pattern. This parameter-based design achieves flow optimization through geometric configuration rather than mechanical complexity, simplifying construction while maintaining high efficiency.
Solution Approach 2:
The guide wall surface is designed with uniform curvature characteristics that create a homogeneous flow distribution pattern. The normal distribution of surface angles provides consistent flow guidance across the entire structure, eliminating the need for segmented or heterogeneous design elements, thereby reducing construction complexity while achieving superior hydraulic performance.
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 effectively prevents local scour and enhances tidal energy utilization by reducing water flow resistance, maintaining efficient power generation and minimizing environmental impact.
Implementation Method 1
The device effectively prevents local scour and enhances tidal energy utilization by reducing water flow resistance
Implementation Method 2
a lower end of the first gear transmission system is connected to the first hydraulic turbine; the first hydraulic turbine includes a first blade group
Implementation Method 3
an upper end of the first gear transmission system is connected with the first generator
Data Source
AI summary
A scour protective device around piles with bidirectional flow power generation. A smooth water flow channel is formed by guide walls and baffle walls. A power generation device is placed at smallest section of the channel. The piles are wrapped by smooth normal distributional surfaces, and the water flow is divided to outsides of normal distributional surfaces. The guide walls at both ends are tangent to eliminate downflow of the incident flow surface and horseshoe vortex around the piles, to avoid local scour. The tidal current is introduced into the channel to accelerate, and contraction panels are further compressed to realize hydropower generation and improve the utilization rate of tidal energy. The swing door makes hydraulic turbines rotate in the same direction when the tide rises and falls, realizing reliable bidirectional hydropower generation. The system provides efficient and environmentally friendly renewable power for bridge lighting, signal lights and vessels.