Bellows Vessel Travel Limit and Guide Roller Anti-Binding
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Solution Overview
Problem
Current variable volume vessels, such as bellows, lack mechanisms to prevent over-travel and binding, leading to damage and inefficiencies during expansion and contraction.
Innovation Solution
Incorporation of travel limit rods and guide rollers within the variable volume vessel to restrict expansion and contraction limits, preventing over-travel and ensuring smooth movement of bellows within an outer housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If bellows sections are allowed to expand and contract freely within the outer pressure vessel, then the variable volume vessel achieves maximum flexibility and volume change, but the bellows sections may expand/contract beyond their travel limits causing over-travel damage
Solution Approach 1:
The patent applies preliminary anti-action by incorporating travel limit rods that preemptively prevent the bellows sections from exceeding their safe expansion and contraction limits. The rods are positioned to make contact with the bellows sections at predetermined travel endpoints, applying a counteracting force before over-travel can occur, thus protecting the bellows from damage while allowing maximum safe flexibility.
2Reliability
If bellows are contained within an outer pressure vessel, then the vessel structure is protected and contained, but the bellows sections will often get hung-up or engage with the outer pressure vessel, leading to binding
Solution Approach 1:
The patent employs guide rollers as intermediary elements between the bellows sections and the outer pressure vessel. These rollers make contact with the inner surface of the outer vessel and facilitate smooth rolling motion, preventing direct engagement and binding between the bellows and the rigid vessel walls. This intermediary mechanism maintains structural protection while enabling effortless bellows movement.
3Reliability
If travel limit mechanisms are added to prevent over-travel, then over-travel protection is achieved, but the device complexity increases
Solution Approach 1:
The patent segments the travel limit function into multiple independent travel limit rods, with each rod associated with a specific bellows section. This segmentation allows each rod to be a simple, standalone component rather than one complex centralized mechanism. The modular nature of segmented rods simplifies manufacturing, installation, and maintenance while achieving comprehensive over-travel protection across all bellows sections.
4Ease of operation
If guide rollers are added to prevent binding, then smooth linear travel is achieved, but the device complexity increases
Solution Approach 1:
The patent merges the guide roller function with the existing structural elements of the bellows system. The guide rollers are integrated into the assembly that already includes travel limit rods and bellows sections, combining multiple functions (guidance, support, and travel limitation) into a unified structure. This merging reduces the need for entirely separate components and simplifies the overall device architecture while maintaining smooth linear travel.
Data Source
AI summary
In one aspect, a variable volume vessel includes an expandable/contractable bellows along with one or more components and/or features that prevent over-travel of the bellows and/or that prevent binding of the bellow relative to an outer housing of the vessel.