Hydronic Waveguide Assembly for EMI-Shielded Pipe Penetrations
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Solution Overview
Problem
Existing waveguide feed-throughs for hydronic applications in shielded rooms require large tools for assembly and maintenance, are difficult to install in tight spaces, and lack efficient EMI/RF shielding, especially for larger pipe sizes.
Innovation Solution
A scalable hydronic waveguide with grooved ends and a shrink-fitted mounting ring, utilizing a solid brass body and RF gaskets, allows easy installation and maintains effective EMI/RF shielding by using bolted fastening and grooved couplers, compatible with standard pipe sizes, and includes a support ring for secure sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If threaded pipe fittings and mounting nuts are used for waveguide feed-throughs, then EMI/RF shielding is maintained, but large tools are required for assembly and maintenance which are difficult to use in tight workspaces
Solution Approach 1:
The waveguide feed-through is divided into modular sections with grooved couplings that can be assembled in smaller increments, allowing standard-sized tools to be used instead of requiring large pipe wrenches for the entire assembly
Solution Approach 2:
The mounting mechanism uses a dynamic approach where the waveguide can be initially positioned and then secured with mounting nuts that can be accessed from tight spaces, allowing assembly without requiring large tools to be maneuvered into confined areas
2Ease of repair
If threaded pipe fittings are used for waveguide feed-throughs, then EMI/RF shielding is maintained, but maintenance requires draining liquid and disassembling piping connections to access mounting nuts
Solution Approach 1:
The mounting system is segmented from the piping connections, allowing the waveguide to be mounted independently with accessible mounting nuts that can be serviced without draining the liquid or disassembling the piping connections
Solution Approach 2:
An intermediary mounting structure is introduced between the waveguide and the shield wall, providing accessible mounting nuts that can be serviced from the front without requiring disassembly of the piping connections or draining of liquid
3Object-affected harmful factors
If solid brass pipe with parallel threads is used for waveguide feed-throughs, then EMI/RF shielding is effective, but installation in tight workspaces becomes difficult
Solution Approach 1:
The waveguide feed-through is segmented into sections with grooved couplings that can be assembled in tighter spaces compared to long threaded connections, while maintaining the solid brass construction for EMI/RF shielding effectiveness
Solution Approach 2:
The mounting approach transitions from requiring axial access for threading to allowing radial access for mounting nut installation, enabling installation in tight workspaces where axial movement is constrained
4Ease of operation
If grooved couplings and bolted fastening are used for waveguide feed-throughs, then installation is easier in tight spaces, but EMI/RF shielding effectiveness may be compromised
Solution Approach 1:
The waveguide feed-through uses composite construction combining grooved couplings for mechanical connection with additional EMI/RF shielding layers or conductive gaskets to maintain shielding effectiveness while enabling easier installation with standard tools
Data Source
AI summary
The current disclosure relates to Hydronic Waveguide pipe penetration assembly. The pipe penetration assembly provides protection from the penetration of EMI and RF emission into a shielded enclosure. The Hydronic Waveguide passes through a wall of the shielded enclosure utilizing a gasket between the wall and the waveguide and is fastened securely utilizing a number of bolts and nuts forming a mechanical fastening to the shielding perimeter. The gasket provides a low-resistance electrical connection from the Hydronic Waveguide assembly and the enclosure shield to mitigate EMI and RF interference and/or penetration.