Segmented Electrolysis Stack Line Sealing with Elastic Elements
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Solution Overview
Problem
Conventional electrolysis stacks face challenges in sealing lines due to thermal expansion, particularly when using materials like plastic and steel, which expand at different rates, and the need to avoid asbestos diaphragms.
Innovation Solution
The electrolysis stack design incorporates a line composed of segments with a diaphragm and an elastic element held between the segments, providing a secure and reliable seal without relying on compressible diaphragms or asbestos.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If asbestos diaphragms are used for sealing, then reliable sealing is achieved, but health and environmental hazards are introduced
Solution Approach 1:
The harmful asbestos material is completely removed from the system and replaced with safe alternative materials (elastomers, plastics, or composite materials) that provide equivalent or superior sealing performance without health and environmental hazards
Solution Approach 2:
The invention uses composite sealing structures combining elastomers, plastics, or other safe materials to achieve reliable sealing without asbestos, maintaining sealing reliability while eliminating harmful factors
2Stability of the object's composition
If rigid sealing materials are used, then structural stability is maintained, but thermal expansion compatibility is poor
Solution Approach 1:
The sealing material's physical parameters (elasticity, thermal expansion coefficient) are changed to match the diaphragm material, allowing the sealing element to expand and contract with the diaphragm during thermal cycles while maintaining structural stability
Solution Approach 2:
Flexible elastomeric or plastic sealing elements are used instead of rigid materials, allowing these elements to adapt to thermal expansion of the diaphragm while maintaining reliable sealing and structural integrity
3Reliability
If thick compressible diaphragms are used, then sealing is achieved through compression, but device complexity and maintenance difficulty increase
Solution Approach 1:
The complex compressive sealing mechanism is removed and replaced with a simple interference-fit arrangement where the sealing element is held between the line segment and diaphragm, achieving reliable sealing through material compatibility rather than mechanical compression
Solution Approach 2:
The sealing element automatically adapts to thermal expansion and maintains sealing through its elastic properties and interference fit, requiring no external compression mechanisms or complex adjustment systems
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 design ensures reliable sealing of the electrolysis stack, reducing the risk of explosive mixtures from hydrogen and oxygen, and simplifies the maintenance of the stack by eliminating the need for complex compressive sealing mechanisms.
Implementation Method 1
between the first part and the second part, one of the diaphragms and an elastic element adjacent thereto and circumferentially formed around an interior of the line are held
Implementation Method 2
This is particularly true with regard to the thermal expansion to which electrolysis stacks are often exposed during operation. Thermal expansion is often a problem because, for example, plastic and steel expand at significantly different rates
Data Source
Figure 1
Figure 2~4
AI summary
Electrolysis stack (1) comprising a plurality of electrolysis cells (2), each comprising an anode chamber (4) with an anode (6), a cathode chamber (5) with a cathode (7) and a diaphragm (8), wherein the electrolysis stack (1) further comprises a line (9) which passes through at least the diaphragms (8) and which has a respective anode-side connection (10) to the anode chambers (4) and/or a respective cathode-side connection (11) to the cathode chambers (5), wherein the line (9) is composed of a plurality of segments (12), wherein the segments (12) are each formed circumferentially around an interior space (13) of the line (9), wherein the segments (12) are each formed by a first part (14) and a second part (15), wherein between the first part (14) and the second part (15) in each case one of the diaphragms (8) and a contacting therewith and the interior (13) of the line (9) is held by an elastic element (16).