Responsive Coating for Chromatography Leak Detection and Sealing
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Solution Overview
Problem
Chromatography systems face difficulties in detecting and preventing leaks, especially at low flow rates where leaks are small and difficult to identify, as existing methods require significant fluid volumes or cannot detect vapor leaks.
Innovation Solution
A coating with a responsive material is applied to components of the chromatography system, which changes physical properties such as stiffness in response to fluid contact, allowing for leak detection and prevention by forming a sealant layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional leak detection methods are used, then large leaks can be detected, but small leaks at low flow rates cannot be detected
Solution Approach 1:
The patent applies parameter changes by utilizing the responsive material's ability to change physical properties (such as swelling, softening, or changing refractive index) in response to fluid contact. This allows the coating to detect even trace amounts of fluid leakage, transforming the detection threshold from requiring significant fluid volumes to detecting minimal fluid presence through physical property changes of the coating material itself.
Solution Approach 2:
The patent employs color changes as a detection mechanism where the responsive material within the coating changes its optical properties (color, fluorescence, or refractive index) upon contact with leaking fluid. This visual transformation enables detection of small leaks without requiring large fluid volumes, as the coating itself becomes the indicator through its physical property changes.
2Reliability
If sealing components are made more complex to prevent leaks, then leak prevention improves, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the coating to autonomously respond to fluid contact and seal leaks without external intervention. The responsive material automatically changes its physical properties upon detecting fluid, creating a self-healing seal that prevents further leakage. This eliminates the need for complex external sealing mechanisms, pressure relief systems, or manual leak detection and repair procedures.
Solution Approach 2:
The patent utilizes flexible shells and thin films by applying a coating layer containing responsive material directly onto system components. This thin film approach provides leak prevention and detection functionality without adding bulky sealing components or complex mechanical structures. The coating conforms to the surface topology and provides flexible sealing that adapts to thermal expansion and pressure changes.
3Difficulty of detecting and measuring
If traditional leak detection sensors are used, then detection is possible, but vapor leaks and small leaks are missed
Solution Approach 1:
The patent applies preliminary action by having the responsive coating continuously present and ready on system surfaces before leaks occur. The coating is pre-positioned in strategic locations where leaks are most likely to happen, maintaining constant surveillance capability. When fluid or vapor leaks occur, the coating immediately responds through physical property changes, detecting leaks at their inception rather than requiring accumulation of significant fluid volumes.
Solution Approach 2:
The patent replaces mechanical detection systems (such as pressure sensors, flow meters, or visual inspection) with a chemical-physical response system. The responsive material undergoes physical property changes (swelling, softening, color change, refractive index change) upon contact with fluid or vapor, providing detection capability for both liquid and vapor leaks without requiring mechanical sensing elements or significant fluid accumulation.
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 solution enables the identification of smaller leaks and prevents fluid passage by creating a sealant barrier, improving the accuracy and safety of chromatography systems by detecting leaks before significant fluid loss occurs.
Implementation Method 1
The responsive material is disposed to change at least one physical property. The responsive material is a physically responsive material that becomes stiffer in order to stop or reduce a leak
Implementation Method 2
A coating with a responsive material is applied to components of the chromatography system, which changes physical properties such as stiffness in response to fluid contact
Implementation Method 3
prevents fluid passage by creating a sealant barrier
Data Source
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AI summary
Systems, methods, and devices for detecting leaks in chromatography systems are disclosed. A coating is disposed to conform to at least one component of a chromatography system, such as a fitting or a section of tubing. The coating is made of or contains a responsive material that can undergo a detectable change when exposed to a chromatographic fluid or mobile phase. The change of the responsive material can indicate the presence of the fluid or mobile phase, a change in at least one physical property of the coating to prevent passage of the fluid or mobile phase, or a combination thereof.