Gas Analysis System Using Switching Valve Timing Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional gas analysis systems require multiple detectors to analyze gas components separated in multiple columns, leading to increased costs and complexity in adjusting the timing of component introduction into detectors.
Innovation Solution
A gas analysis system with a first column for primary separation, a second column for secondary separation, a common detector, and a controller that performs delay processing on a switching valve to delay the introduction of components from the first column into the detector, allowing them to be detected after components from the second column, thereby reducing the number of detectors needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple detectors are used to detect gas components from multiple columns, then detection capability is improved, but system cost and complexity increase
Solution Approach 1:
The patent merges multiple detection functions into a single detector by using a switching valve to route gas components from multiple columns to the same detector at different time points, thereby reducing the number of detectors required while maintaining comprehensive detection capability
Solution Approach 2:
The patent employs a switching valve that dynamically changes the connection configuration between columns and the detector based on the elution timing of different gas components, allowing a single detector to sequentially analyze components from multiple columns
2Device complexity
If gas components from multiple columns are introduced simultaneously into a common detector, then detector usage is optimized, but peak overlap occurs reducing measurement precision
Solution Approach 1:
The patent performs preliminary separation of gas components in different columns before detection, and uses a switching valve to introduce components into the detector in a predetermined sequence based on their elution times, preventing peak overlap and ensuring accurate detection
Solution Approach 2:
The switching valve operates periodically to alternately connect different columns to the detector, creating a time-separated detection sequence that prevents simultaneous introduction of gas components and eliminates peak overlap
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 configuration allows for efficient detection of gas components from multiple columns using fewer detectors, simplifying the adjustment process and reducing costs and complexity by avoiding peak overlap through delayed introduction of components from the first column.
Implementation Method 1
Gas chromatography is an analysis technique to detect a component in gas by separation of the component in gas with the use of a separation column
Implementation Method 2
a second column that separates a gas component contained in the sample gas
Data Source
AI summary
A gas analysis system includes a first column, a second column, a merge portion connected to an outlet of the first column and an outlet of the second column, a detector that detects a gas component introduced from the merge portion, a switching valve arranged between the first column and the merge portion, and a controller. The controller performs delay processing of switching the switching valve between open and closed states so that timing of start of introduction of the gas component separated in the first column into the detector is delayed to be later than timing of completion of introduction of the gas component separated in the second column into the detector.