Sealable Compartment Leak Detection in Chromatography Systems

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Solution Overview

Problem

Chromatography systems face challenges in detecting small fluid leaks, especially at low flow rates, as existing methods struggle to identify leaks accurately and locate them without causing interference or safety hazards, and current sensors require significant fluid volumes to operate effectively.

Innovation Solution

The system employs sealable compartments to enclose components of the chromatography system, using gas/vapor sensors to detect leaks by isolating and concentrating vapor, with a central detector or individual detectors monitoring each compartment, and a valve system to control fluid communication and sampling, allowing for sensitive detection of minor leaks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional sensors are used to detect leaks, then the system can detect larger leaks, but it cannot detect small leaks at low flow rates

Engineering Contradiction:
Improveleak detection sensitivityVSAvoidfluid volume required for detection
Core Design Contradiction:
Measurement precisionVSQuantity of substance

Solution Approach 1:

The system divides the chromatography system into multiple sealable compartments, each surrounded by its own detector. This segmentation allows the detection of small leaks in individual compartments by isolating vapor concentrations, enabling sensitive detection without requiring large fluid volumes to spread throughout the entire system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces sealable compartments as intermediary structures between the leak source and the detector. These compartments concentrate vapor from small leaks, acting as a mediator that amplifies the detectable signal without requiring large quantities of leaked fluid, thereby improving detection sensitivity for small leaks.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If the system monitors for leaks without sealable compartments, then the structure is simpler, but leak detection accuracy and location identification are insufficient

Engineering Contradiction:
Improveleak location identificationVSAvoidsystem structure
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

By segmenting the system into multiple sealable compartments with individual detectors, the patent enables precise leak location identification. Each compartment acts as an independent monitoring zone, so when a leak is detected in a specific compartment, the system can immediately identify which component or area is leaking, providing accurate spatial information without requiring complex additional structures.

Inventive Principle:
Principle #1Segmentation

3Measurement precision

If leak detection methods interfere with system operations, then detection sensitivity may be improved, but system productivity is reduced

Engineering Contradiction:
Improveleak detection capabilityVSAvoidsystem operational efficiency
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The sealable compartments are designed to allow continuous monitoring of leak conditions without interrupting the chromatography system's operational flow. The detectors can sample and analyze vapor concentrations in real-time while the system operates, maintaining continuous useful action in both the chromatography process and the leak detection function simultaneously.

Inventive Principle:
Principle #20Continuity of useful action

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

This approach enhances leak detection sensitivity, enabling the identification of smaller leaks and their location within chromatography systems, preventing fluid spread and ensuring safety by confining and concentrating vapor, and allowing for real-time monitoring without interfering with system operations.

Implementation Method 1

a detector in fluid communication with an interior of the sealable compartment and configured to detect the fluid leak, e.g., a buildup of vapor within the sealable compartment

Methodology Applied
Scientific EffectVapor concentration detection:

Data Source

PatentUS10753916B2Systems, methods, and devices for detecting leaks in a chromatography system
Publication Date: 2020.08.25 WATERS TECHNOLOGY CORP
  • US10753916B2 patent drawing
  • US10753916B2 patent drawing

AI summary

Systems, methods, and devices for detecting leaks in chromatography systems are disclosed. The leak detection system includes a sealable compartment disposed to surround at least one component of a chromatography system. The detector is in communication, e.g., fluid communication, with an interior of the sealable compartment and configured to detect the leak by various mean including the presence of liquid or the presence of vapor, or both within the sealable compartment.