Submersible Hull Segmentation for Bulk Liquid Transport
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Solution Overview
Problem
Existing technologies are inadequate for transporting and loading/unloading ultra-large volumes of aqueous bulk liquids, particularly fresh water, due to issues such as hull deformation, hydrodynamic instability, and lack of optimized ballast systems.
Innovation Solution
The development of an ultra-large marine submersible transport boat with a double-walled, controllable-ballasted, and hydrodynamically shaped submersible hull made from heavier-than-seawater materials, equipped with an onboard hydro-pneumatic ballasting system and collapsible bladders for efficient liquid transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a collapsible material hull is used for the submersible transport boat, then the device complexity is reduced and ease of manufacture is improved, but the hull deformation under hydrostatic pressure and hydrodynamic instability worsen
Solution Approach 1:
The hull is divided into multiple rigid segments or panels that are connected in a modular fashion. This segmentation allows each panel to maintain its structural integrity under hydrostatic pressure while the overall hull retains flexibility for manufacturing. The rigid segments prevent deformation under pressure while the modular connection system enables easier assembly and manufacture.
Solution Approach 2:
The hull employs composite material construction combining rigid structural elements (such as reinforced polymers or metal-composite hybrids) with flexible connecting components. This composite approach provides the necessary rigidity to resist hydrostatic pressure and maintain hydrodynamic stability while incorporating elements that facilitate manufacturing and assembly processes.
2Productivity
If the transport boat size is increased to ultra-large dimensions for transporting bulk liquids, then the productivity and transport capacity are improved, but the structural integrity and stability worsen
Solution Approach 1:
The ultra-large hull is segmented into multiple smaller rigid sections or modules that are connected together. This segmentation reduces the span between structural supports, maintaining structural integrity across the large overall dimension. Each segment can be manufactured and tested independently, then assembled to form the complete ultra-large transport boat, ensuring reliability while achieving high transport capacity.
Solution Approach 2:
The hull structure incorporates a third dimension through internal framing, bulkheads, or rib structures that provide dimensional stability. This multi-dimensional structural approach distributes hydrostatic loads across multiple planes and surfaces, maintaining structural integrity of the ultra-large hull by adding structural complexity in perpendicular dimensions rather than simply increasing wall thickness.
3Stability of the object's composition
If a rigid double-skinned hull is used to prevent hull deformation, then the hull stability is improved, but the device complexity and drag increase
Solution Approach 1:
The hull employs a double-skinned rigid structure only in critical areas where hydrostatic pressure resistance is most needed, such as the pressure hull sections. Non-critical external sections may use simpler single-skin construction. This local application of the double-skinned design provides necessary stability where required while reducing overall device complexity and weight compared to a complete double-skinned structure throughout.
Solution Approach 2:
Instead of creating a completely new complex double-skinned rigid hull design, the invention may utilize proven hull forms and structural configurations from existing submarine or submersible designs. By copying and adapting established successful hull geometries and structural arrangements, the design achieves necessary stability while avoiding the complexity of developing entirely new structural systems.
4Productivity
If the submersible transport boat is designed for ultra-large volume transport, then the productivity is improved, but the loading and unloading capability and ease of operation worsen
Solution Approach 1:
The internal cargo space is divided into multiple separate cargo modules or compartments that can be independently accessed, loaded, and unloaded. This segmentation allows loading and unloading operations to occur at multiple points along the hull rather than requiring access to the entire ultra-large volume at once. Cranes or loading mechanisms can service individual modules, making operation easier while maintaining ultra-large overall transport capacity.
Solution Approach 2:
The invention introduces intermediary loading structures such as modular cargo containers, transfer modules, or intermediate handling platforms that facilitate loading and unloading of bulk liquids. These intermediary elements provide standardized interfaces between the ultra-large hull and external loading equipment, making operation easier by creating manageable intermediate steps in the loading/unloading process rather than direct access to the entire ultra-large volume.
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 solution enables the stable and efficient transportation of ultra-large volumes of aqueous bulk liquids by maintaining hull integrity, controlling buoyancy and pitch/roll, and ensuring the quality of transported fresh water.
Implementation Method 1
the weight of the hull (150) together with the volume of the ballast chambers (490) being configured to control the buoyancy of the ultra-large marine submersible transport boat by controlled ballasting of the ballast chambers, so that the ultra-large marine submersible transport boat is controllably submerged and, from a submerged position, is brought to the seawater surface
Implementation Method 2
an onboard hydro-pneumatic ballasting system that contains a ballasting command and control center that commands and controls the feeding and extraction of hull ballast water and ballast air, into and from the ballast chambers
Implementation Method 3
the submersible hull enclosing a plurality of collapsible bladders configured for loading with the aqueous bulk liquids and shaped to substantially occupy almost the whole free hollow inside of the submersible hull when filled with bulk liquids to be transported
Data Source
Figure 1
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Figure 3~7
AI summary
Ultra-large marine submersible transport boats and arrangements for aqueous bulk liquids transportation, including fresh water and irrigation drainage, from specifically configured supply stations to specifically configured delivery stations. Boats present rigid hydrodynamic shaped double-walled submersible hulls incorporating a plurality of inside-reinforced impervious ballast chambers and also present radial reinforcing elements and hollow interior cavities that enclose collapsible bulk liquid bladders for transporting bulk liquids. Hulls can be made of reinforced concrete. Hull openings permit seawater circulation, avoiding transportation of bulk ballast seawater. Submersible cruising reduces structural loads and drag. An on-board hydro-pneumatic ballasting system adds to and removes reusable hull ballast water from, the ballast chambers controlling the hull's depth, pitch, and roll. Propulsion, steering capabilities, and detailed arrangements and methods for loading, unloading, and transporting bulk liquids are presented. Hull manufacturing is done on marine floating platforms using onshore precast panels. Maintenance and end of life procedures are detailed.