Electrolyser End Pressure Plate with Convex Dome
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Solution Overview
Problem
Existing end pressure plate designs for electrolyser stacks and modules are heavy, costly, and lack scalability and self-regulation, especially for larger units operating at elevated pressures, as they require massive metal flanges to prevent deflection and maintain flatness.
Innovation Solution
The design incorporates a load transfer plate with a convex domed surface in contact with a backing plate, which bends to maintain even pressure and alignment without tie rod holes, allowing for lightweight and cost-effective construction while ensuring compression and pressure retention across the structural plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional massive metal end pressure plates are used to prevent deflection and maintain flatness, then pressure retention and flatness are improved, but weight and cost increase significantly
Solution Approach 1:
The end pressure plate is divided into two separate components: a load transfer plate and a backing plate. The load transfer plate maintains contact with structural plates to ensure flatness, while the backing plate provides structural support. This segmentation allows each component to be optimized for its specific function, reducing the need for a single massive plate.
Solution Approach 2:
The load transfer plate incorporates a convex domed surface that contacts the backing plate. This curved geometry provides structural rigidity and load distribution without requiring excessive thickness or mass, enabling the plate to resist deflection while maintaining a lighter weight compared to conventional flat massive plates.
2Reliability
If conventional massive metal end pressure plates are used to maintain flatness under pressure, then pressure retention is improved, but manufacturing cost increases
Solution Approach 1:
By separating the end pressure plate into a load transfer plate and a backing plate, each component can be manufactured more economically. The load transfer plate can be thinner and less massive since it only needs to transfer loads, while the backing plate provides the necessary structural support. This reduces material costs and manufacturing complexity compared to a single massive plate.
Solution Approach 2:
The end pressure plate assembly uses a composite structure combining different plate configurations. The load transfer plate with its convex domed surface works in conjunction with the backing plate to create a composite system that achieves superior pressure retention at lower cost than conventional homogeneous massive metal plates.
3Manufacturing precision
If conventional massive end pressure plates are used for larger capacity units, then flatness is maintained, but the plates become overly massive and extremely heavy
Solution Approach 1:
The segmentation of the end pressure plate into load transfer and backing components allows the structure to scale to larger capacity units without proportionally increasing weight. The load transfer plate maintains flatness through its design and contact mechanism, while the backing plate provides support, avoiding the need for a single massively thick plate.
Solution Approach 2:
The convex domed surface on the load transfer plate provides inherent structural strength that scales well with size. This curved geometry distributes loads efficiently across the plate surface, maintaining flatness and preventing deflection in larger capacity units without requiring excessive mass.
4Stability of the object's composition
If welded assemblies are added to stiffen end pressure plates, then deflection is mitigated, but weight, size, manufacturability, and cost increase
Solution Approach 1:
Instead of adding welded assemblies to a single plate, the invention segments the plate into two components that work together. The load transfer plate and backing plate are designed to function as an integrated system, providing deflection resistance through their combined structure rather than through additional welded stiffening elements.
Solution Approach 2:
The convex domed surface on the load transfer plate provides inherent stiffness and deflection resistance through its curved geometry. This eliminates the need for additional welded assemblies or complex structural modifications, maintaining simplicity while achieving the desired stability.
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 approach maintains flatness of the load transfer plates under pressure, optimizing material use and reducing weight and cost, while providing a scalable and self-regulating solution for large-scale electrolyser modules and stacks.
Implementation Method 1
a backing plate for supporting load transferred from said load transfer plate... which bends to maintain even pressure
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
An end pressure plate is provided for an electrochemical cell stack or an electrolyser module. The end pressure plates comprise a load transfer plate for maintaining even pressure over the faces of the structural plates, and a backing plate for supporting load transferred from the load transfer plate.