High-Pressure Vessel Unit with Axial Movement Retention
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Solution Overview
Problem
Existing high-pressure vessel configurations face challenges in ensuring capacity while minimizing the load on valves during vessel expansion or contraction, particularly when multiple cylindrical vessels are installed, leading to increased cabin and luggage space difficulties and uneven valve loading.
Innovation Solution
A high-pressure vessel unit design featuring a box-like case with arrayed cylindrical vessels, a coupling member for internal communication, a lead-out pipe with a valve, and a retention mechanism allowing axial movement of vessel end portions, which reduces valve load and allows for expansion and contraction without increasing the case size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple cylindrical vessels are installed to increase fuel capacity, then capacity is improved, but cabin and luggage space are reduced
Solution Approach 1:
Multiple cylindrical vessels are nested inside a box-like case, with the vessels arranged in a compact configuration that maximizes space utilization. The case houses the vessels efficiently, allowing the system to achieve high fuel capacity while minimizing the external volume occupied, thereby preserving cabin and luggage space.
2Adaptability or versatility
If valves are provided for each vessel and coupled by pipe, then individual vessel control is improved, but load on valves increases due to variations in axial expansion
Solution Approach 1:
The retention mechanism allows the vessels to move dynamically in the axial direction, accommodating thermal expansion and contraction. This dynamic adjustment prevents stress accumulation and reduces the load on valves during pressure changes, while the coupling member maintains fluid communication between vessels.
Solution Approach 2:
The coupling member acts as an intermediary that connects multiple vessels while allowing relative movement. It provides a flexible connection that accommodates axial expansion variations without transmitting excessive forces to the valves, thereby reducing valve load while maintaining system connectivity.
3Stability of the object's composition
If vessels are secured rigidly to case, then structural stability is improved, but valve load increases during axial expansion
Solution Approach 1:
The retention mechanism provides a semi-rigid connection that allows controlled axial movement. This dynamic design maintains structural stability for lateral support while permitting axial expansion, thereby preventing excessive force transmission to the valves during pressure cycles.
Solution Approach 2:
Different parts of the vessel support system have different degrees of rigidity. The coupling member provides rigid connection for structural stability, while the retention mechanism provides flexible support for axial movement. This localized differentiation of mechanical properties allows the system to maintain stability while reducing valve load.
Data Source
AI summary
A high-pressure vessel unit includes: plural cylindrical vessels arrayed inside a case, with end portions of the vessels on one side in the axial direction thereof being equipped with openings; a coupling member connected to the openings of the vessels to couple the plural vessels and includes a flow passage that communicates the insides of the vessels; a lead-out pipe that is leads out to the outside of the case from the coupling member through a through hole formed in the case; securing members that secure the coupling member to the case; and a retention mechanism that retains portions of the vessels on the axial direction other side of the end portions on the one side in the axial direction such that those portions of the vessels on the axial direction other side are movable in the axial direction relative to the case.