Modular Plasma Reformer Electrode Assembly for Easy Maintenance
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Solution Overview
Problem
Existing plasma reformers for treating exhaust streams are difficult to maintain and require extensive disassembly, which can damage the reformer walls and are costly, especially when electrodes need replacement.
Innovation Solution
A modular plasma treatment system with interchangeable and easily accessible inner and outer electrodes that nest within an outer housing, allowing for blind-mate connections and self-centering geometric features for easy assembly and maintenance, and utilizing multiple plasma types in the same reaction zone for enhanced radical utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If electrodes are supported within a dielectric tube enclosed in a single enclosure, then the reformer structure is compact and integrated, but maintenance and replacement of electrodes become difficult and time-consuming
Solution Approach 1:
The reformer is divided into separate modular components: an outer housing, an inner housing containing the dielectric tube and electrodes, and quick-connect couplings. This segmentation allows the inner housing with electrodes to be removed and serviced independently without dismantling the entire reformer structure, resolving the contradiction between integrated design and maintenance accessibility.
Solution Approach 2:
The system employs dynamic quick-connect couplings that allow rapid assembly and disassembly of the inner housing from the outer housing. These couplings enable service personnel to access electrodes quickly by simply disconnecting couplings rather than permanently fixed structures, balancing structural integration with ease of repair.
2Strength
If the reformer uses a single enclosure without easily de-coupleable fasteners, then the structure is more robust and sealed, but disassembly for maintenance can damage the reformer walls
Solution Approach 1:
The reformer structure is segmented into an outer housing and an inner housing that can be separately assembled and disassembled. The inner housing contains the dielectric tube and electrodes, while the outer housing provides structural support. This segmentation allows maintenance work on electrodes without compromising the integrity of the outer housing walls.
Solution Approach 2:
Instead of designing the entire reformer for easy disassembly, only the inner housing containing the electrodes is made partially disassemblable via quick-connect couplings. This partial action approach maintains the robustness of the outer housing while providing sufficient access for electrode maintenance, avoiding over-engineering the disassembly capability.
3Reliability
If electrodes are permanently installed within the dielectric tube, then the assembly is more stable and reliable, but replacement becomes expensive and complex
Solution Approach 1:
The electrode assembly is segmented into the inner housing module that can be independently removed from the outer housing. This allows electrodes to remain securely installed within the dielectric tube during operation (maintaining reliability) while enabling the entire inner housing to be quickly removed and electrodes replaced without complex disassembly (reducing repair complexity and cost).
Solution Approach 2:
The inner housing is pre-assembled with electrodes and dielectric tube as a complete module before installation into the outer housing. This preliminary assembly ensures proper positioning and secure installation (improving reliability) while allowing the entire module to be replaced as a unit during maintenance (simplifying repair procedures and reducing costs).
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
Facilitates easy maintenance and replacement of electrodes, optimizes plasma generation for efficient radical production, and reduces the need for high voltages and expensive insulators, while minimizing the creation of unwanted chemicals.
Implementation Method 1
a reactor having a reaction zone that reforms substances within an input stream from one substance to another substance—preferably another substance that is less harmful to humans and/or machinery... when introduced to a reactive molecular species, or Radical, created by the reformer
Implementation Method 2
U.S. Pat. No. 6,994,830 to Raybone and U.S. Pat. No. 7,025,939 to Hall both teach reformers for plasma treatment of gases with electrodes supported within a dielectric tube
Data Source
AI summary
A modular plasma treatment system has interchangeable and easily accessible inner and outer electrodes that concentrically nest within an outer housing of one or more plasma reformers. The inner and outer electrodes have self-centering features that allow for blind-fitting of the interchangeable inner and outer electrodes during electrode replacement and maintenance. A plurality of reformers that generate different types of plasmas are preferably arranged serially to allow for a mixture of separate plasmas within the same reaction area and to increase utilization of short-lived radicals.