Pneumatic Granular Medium Layer Modification Device
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Solution Overview
Problem
Existing technologies for altering seabeds or coastal areas are carbon intensive, expensive, and environmentally damaging, and they often require heavy equipment that is not suitable for all environments, especially in shallow waters or intertidal zones.
Innovation Solution
A device configured to be disposed within a granular medium, such as sand or sediment, which raises or lowers a layer of the granular medium using a flexible envelope with inflatable elements, allowing for easy installation and operation without the need for dedicated securing devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional material transportation methods are used to alter seabeds or coastal areas, then the desired topological modification is achieved, but the process becomes carbon intensive, expensive, and environmentally damaging
Solution Approach 1:
The patent replaces mechanical material transportation systems with a pneumatic system that uses pressurized air to fluidize and transport granular material locally. The injection device delivers pressurized air through hoses to the seabed, creating a fluidized bed that redistributes sand and sediment without importing foreign materials, thereby eliminating the environmental harm associated with material transportation while achieving the desired topological modification
Solution Approach 2:
The system uses the existing granular material already present on the seabed rather than importing external materials. The pressurized air injection fluidizes the existing sand and sediment, allowing it to be redistributed and reshaped in place. This self-service approach eliminates the need for material transportation entirely, reducing both cost and environmental impact while achieving the desired coastal or seabed modification
2Quantity of substance
If heavy equipment is used for seabed modification, then material displacement capability is improved, but the equipment cannot be used in shallow waters or intertidal zones and requires appropriate access routes
Solution Approach 1:
The patent employs pneumatic technology using pressurized air delivered through flexible hoses to fluidize and transport granular material. This pneumatic system can be deployed in shallow waters and intertidal zones where heavy mechanical equipment cannot operate, as the hoses can be extended from the shore or boat to the treatment area. The pressurized air creates sufficient force to displace significant volumes of sand and sediment without requiring heavy machinery, thereby achieving both high material displacement capability and environmental adaptability
Solution Approach 2:
The patent uses pressurized air as an intermediary medium to transfer energy and move granular material. Instead of using heavy equipment that directly contacts and moves the seabed material, the pressurized air acts as an intermediary that fluidizes the sand and sediment, allowing it to be redistributed by the airflow. This intermediary approach enables operation in shallow and intertidal zones while maintaining effective material displacement capability
3Reliability
If anchored submerged breakwaters are installed to modify wave breaking, then wave management capability is improved, but the installation becomes complex requiring professional divers and the structure can be damaged by currents
Solution Approach 1:
The patent creates dynamic, adjustable seabed modifications rather than static anchored structures. By injecting pressurized air intermittently or continuously, the system can fluidize and redistribute sand and sediment to create wave-breaking features such as bars, ridges, or shallow areas. These features are dynamic and can be adjusted or repositioned by controlling the air injection, providing reliable wave management without the complexity of anchoring systems. The modified seabed topology passively manages waves without requiring active structural components that can be damaged by currents
Solution Approach 2:
The patent replaces mechanical anchored structures with a pneumatic system that uses pressurized air to reshape the seabed. Instead of installing physical breakwater structures that require complex anchoring by divers, the system uses airflow to fluidize and redistribute granular material, creating natural-looking wave-breaking features. This substitution eliminates the installation complexity and vulnerability to current damage associated with anchored structures, while maintaining reliable wave breaking control through the created seabed topology
4Strength
If massive rock or sand bags are placed on the seabed to create wave-breakers, then structural robustness is improved, but the device becomes expensive, has large environmental impact, and cannot adapt to wave height or tides
Solution Approach 1:
The patent creates dynamic, adjustable seabed features rather than static massive structures. By controlling the pressurized air injection, the system can fluidize and redistribute sand and sediment to create wave-breaking features with varying heights and configurations. These features can adapt to changing wave conditions and tidal levels, providing robust wave management without the environmental impact or cost of massive rock or sand bag structures. The dynamic nature of the pneumatic system allows continuous adjustment to optimize performance under different environmental conditions
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 provides a versatile and cost-effective solution for modifying seabeds or coastal areas, offering protection against currents and adverse weather, while minimizing environmental impact and avoiding the need for heavy equipment or material transportation.
Implementation Method 1
an inflatable element housed in the internal volume so as to be interposed between an upper surface and a lower surface of the envelope, the inflation and deflation of said element allowing the internal volume to be varied
Implementation Method 2
an injection device configured to fill the inflatable element with a fluid
Implementation Method 3
the device being configured to switch from a first configuration in which the inflatable element is inflated to occupy a first volume to a second configuration in which the inflatable element is inflated to occupy a second volume greater than the first volume so that the upper surface is deformed vertically
Implementation Method 4
the device being configured so that the lower surface remains substantially horizontal in the first and second configurations in order to maintain the device in position in the granular medium
Data Source
AI summary
A device configured to be disposed within a granular medium to raise a layer thereof, the device having: a flexible envelope forming an internal volume; an inflatable element in the internal volume, interposed between the envelope's upper and lower surfaces, the element's inflation and deflation varying the internal volume; an injection device for filling the inflatable element with a fluid; the device being switchable from a first configuration having the inflated inflatable element occupy a first volume to a second configuration having the inflated inflatable element occupy a second volume greater than the first to deform the upper surface vertically to raise the granular medium's layer, and vice versa; the device further being switchable from the first or second configuration to a third configuration having the envelope's lower surface deform vertically to allow the device to ascend through the granular medium. Also, a method of deforming a granular medium layer.