Biasing Tool for Cryogenic Braided Hoses
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Solution Overview
Problem
The installation of braided hoses in temperature-biased cryogenic feedlines is challenging due to thermal expansion and contraction, which requires precise biasing to accommodate changes in temperature, and existing solutions like expansion joints and gimballed joints are bulky and prone to leaks.
Innovation Solution
A biasing tool with adjustable rod assemblies and collars is used to capture and bias braided hoses, allowing for controlled lateral and longitudinal deflection, facilitating easier installation and uninstallation by maintaining the hose in a desired position and minimizing stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If expansion joints or gimballed joints are used to accommodate thermal expansion and contraction, then the system can handle temperature changes, but the device becomes bulky and prone to leaks
Solution Approach 1:
The patent extracts the complex joint mechanisms (expansion joints, gimballed joints) from the system and replaces them with a simpler biasing tool that applies pre-calculated thermal bias directly to the hose connections, eliminating the need for bulky compensating joints
Solution Approach 2:
The patent applies preliminary thermal biasing to the hose connections during installation. The biasing tool pre-positions the hoses to account for anticipated thermal expansion and contraction, so the system is prepared for temperature changes before operation begins, rather than requiring complex joints to handle the changes dynamically
2Ease of operation
If braided hoses are installed without proper biasing, then installation is simpler, but the hoses experience excessive stress and have reduced useful life
Solution Approach 1:
The biasing tool applies preliminary positioning and stress relief to the braided hoses during installation. By pre-biasing the hoses to their correct thermal positions, the tool ensures proper stress distribution from the start, which prevents premature failure and extends service life while maintaining installation simplicity
3Strength
If precise biasing is applied to accommodate thermal changes, then hose stress is reduced, but the installation process becomes more complex
Solution Approach 1:
The biasing tool is divided into separate modular components: multiple yokes that can be independently positioned, multiple rod assemblies with adjustable lengths, and collars that fit over hose ends. This segmentation allows each component to be adjusted independently to achieve the precise biasing needed for stress reduction while keeping the overall system manageable
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
The biasing tool enables precise control over hose deflection, improving installation efficiency and extending the useful life of braided hoses by accommodating thermal expansion and contraction, reducing the risk of leaks and mechanical stress.
Implementation Method 1
materials expand and contract as temperatures of the materials increase and decrease
Implementation Method 2
materials expand and contract as temperatures of the materials increase and decrease
Data Source
AI summary
The present disclosure relates to the construction and use of feedlines in temperature-biased systems that include counter-biased hoses. The alignment and installation/uninstallation of the counter-biased hoses is enabled by a biasing tool with at least a first yoke having a first rotation point and a second rotation point, a second yoke having a third rotation point and a fourth rotation point, a first rod assembly connected to the first yoke at the first rotation point and connected to the second yoke at the fourth rotation point, and a second rod assembly connected to the first yoke at the second rotation point and connected to the second yoke at the third rotation point.