Constant-Volume Boot Bellows for Low-Energy Water Displacement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems for generating electricity using a power module that falls through air and then cycles through a bi-level water tank face challenges in efficiently managing the power requirement for lifting a vertically-oriented column of water, which is heavy and requires substantial energy, and in continuously accommodating successive objects while maintaining a height differential between the tank surfaces.
Innovation Solution
A bi-level tank system with a valve mechanism and a displacement device that alternates the water pathway to lift and lower water columns efficiently, using the power module's weight and buoyancy forces to drive an electric generator, and incorporates a control unit to coordinate the operation of the valve mechanism and displacement device, minimizing energy loss and allowing continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a power module falls through air and enters a bi-level water tank to generate electricity, then electrical energy is generated through the conversion of gravitational potential energy, but the system requires substantial power to lift the heavy water column back to its original position
Solution Approach 1:
The water column lifting function is segmented into two independent parts: the displacement device that moves water laterally between tanks, and the return mechanism that uses gravity to restore water levels. This segmentation eliminates the need for direct vertical lifting, reducing the power requirement significantly.
Solution Approach 2:
The system transitions from vertical water column movement (requiring substantial lifting power) to lateral water displacement between tanks (utilizing gravity for return flow). By changing the dimension of water movement from vertical to horizontal, the power requirement for water management is dramatically reduced.
2Productivity
If the bi-level tank system continuously cycles power modules through water to maintain operation, then continuous electricity generation is achieved, but the complexity of coordinating valve mechanisms and displacement devices increases
Solution Approach 1:
The system employs periodic cyclic operation where valve mechanisms and displacement devices are activated in alternating sequences. The first valve opens while the displacement device operates, then closes while the second valve operates, creating a rhythmic cycle that simplifies coordination compared to simultaneous multi-component control.
Solution Approach 2:
The displacement device acts as an intermediary mechanism that mediates between the two tank systems, transferring water laterally to enable independent level control. This intermediary function simplifies the overall coordination by decoupling the water level management of the two tanks.
3Use of energy by stationary object
If the system uses a displacement device with extensible bellows and boot to laterally move water between tanks, then the power requirement for lifting water is reduced, but the device complexity increases due to multiple moving components
Solution Approach 1:
The displacement device utilizes pneumatic principles through extensible bellows that expand and contract to displace water laterally. The boot component creates a fluid-tight seal that allows the bellows to move water efficiently. This pneumatic-hydraulic approach reduces power requirements compared to mechanical pumping while managing the complexity through integrated design.
Solution Approach 2:
The extensible bellows and boot are constructed as flexible shells that can expand and contract to accommodate water displacement. These flexible components provide the necessary movement and sealing functions while maintaining structural integrity, enabling lateral water transfer with minimal power input.
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 system effectively reduces the power requirement for lifting water columns, allows continuous operation with successive power modules, and maintains a stable water level differential, making it environmentally friendly and commercially viable.
Implementation Method 1
uses the inherent weight of a power module as it falls through air from an elevated position to drive an electric generator
Implementation Method 2
the power module falls into a bi-level water tank where its inherent buoyancy overcomes its weight. The power module then returns through the bi-level tank by buoyancy to the start point
Data Source
AI summary
A bi-level tank includes a transfer tank and a return tank containing a volume of water, including transfer and return components in the transfer and return tanks, respectively, and a transition component. A bellows couples an upper surface of a piston in the transfer tank to the return component that exerts pressure on the upper surface, while a lower surface of the piston is under pressure from a pressured fluid supplied by a source thereof, producing a pressure differential on the piston. Actuation of a force-applying mechanism on the piston sufficient to overcome the pressure differential displaces the piston for exchanging respective volumes of the return component and the fluid from the source. An extensible and retractable constant-volume boot holds the transition component around the bellows and has valves configured to open and close for equalizing pressure between the boot and the transfer tank.