Double-Walled Fluid Assembly With Segmented Secondary Containment
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Solution Overview
Problem
Fluid assemblies with double containment structures face challenges in maintenance due to the difficulty of performing tasks without interrupting the primary structure's operation, and they are vulnerable to leakage if the secondary structure fails.
Innovation Solution
A fluid assembly design featuring a first conduit housed within a double-walled secondary conduit, with interspaces between the walls that allow for independent maintenance and insulation to prevent leakage, including vacuum or pressurized gas in the interspaces for thermal insulation and secondary containment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a double containment structure is used to prevent leakage, then reliability is improved, but maintenance becomes difficult without interrupting operation
Solution Approach 1:
The double containment structure is divided into modular sections with detachable connections. The secondary containment can be segmented into multiple parts that can be independently accessed and maintained without disrupting the primary containment and fluid flow, resolving the contradiction between maintaining reliability through double containment and enabling easy maintenance access.
2Loss of energy
If insulation is added to prevent thermal loss, then energy efficiency is improved, but device complexity increases
Solution Approach 1:
The insulation layer is merged with the secondary containment structure, forming an integrated component rather than a separate addition. This combination reduces overall device complexity while maintaining thermal insulation effectiveness, as the insulation becomes part of the containment system itself rather than an additional layer.
3Reliability
If the secondary structure is made robust to prevent leakage, then reliability is improved, but ease of repair worsens
Solution Approach 1:
The secondary containment structure incorporates dynamic elements such as detachable brackets and removable sections that allow it to transition from a rigid robust structure to a easily disassembled configuration for repairs. This enables robust leakage prevention during operation while facilitating easy component replacement when maintenance is needed.
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
Enables easy and quick replacement of components without disrupting fluid flow or operation, providing robust secondary containment and thermal insulation, reducing leakage risks.
Implementation Method 1
the first interspace contains a vacuum
Implementation Method 2
the second interspace contains a pressurised fluid... The pressurised fluid is an inert gas, preferably Helium
Data Source
Figure 1~2A
Figure 2B~3
Figure 4~5A
AI summary
A fluid assembly comprising: a first conduit extending in an axial direction and configured to carry a fluid, a double walled outer second conduit extending in the axial direction; the second conduit having an inner wall and outer wall and a first interspace between the inner and outer walls, wherein the first conduit is housed inside the second conduit to form a second interspace between the first conduit and the inner wall of the second conduit.