Gas Analyzer Abnormality Detection via Controlled Sample Introduction
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Solution Overview
Problem
Conventional gas analyzers require a complex configuration and increased cost to identify abnormalities due to the need for multiple standard sample gases with different concentrations, necessitating a special device for sequential switching, which complicates user operation and analysis results.
Innovation Solution
A gas analyzer with a switching valve to alternate between test and standard sample gases, an adjusting valve to control gas introduction amounts, and a control device to calculate peak area values, allowing for the determination of analyzer deterioration without the need for multiple standard gases or a special device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple standard sample gases with different concentrations are prepared and a special device for sequential switching is added, then the ability to identify abnormalities in the gas analyzer is improved, but the device complexity and cost increase
Solution Approach 1:
The patent makes the single standard sample gas container serve multiple functions by using the adjusting valve to control different introduction amounts. The same container and valve system that normally serves analysis purposes is also used for abnormality identification, eliminating the need for separate containers for different concentrations.
Solution Approach 2:
Instead of changing the concentration parameter by using different standard sample gases, the patent changes the introduction amount parameter by controlling the adjusting valve. This allows the same standard sample gas to be used at different quantities to identify abnormalities, avoiding the need for multiple gas containers.
2Reliability
If multiple standard sample gases with different concentrations are prepared and a special device for sequential switching is added, then the ability to identify abnormalities in the gas analyzer is improved, but the operation complexity increases
Solution Approach 1:
The control device automatically controls the adjusting valve to introduce the standard sample gas in predetermined amounts without requiring manual intervention. The system performs abnormality identification autonomously by calculating peak area values and comparing them against expected ranges, eliminating complex manual operations.
Solution Approach 2:
The control device performs multiple functions: it controls the adjusting valve during normal analysis operations and also controls the introduction amount during abnormality identification. This multi-functionality eliminates the need for separate operational procedures for different purposes.
3Reliability
If multiple standard sample gases with different concentrations are used, then the ability to identify abnormalities is improved, but the cost increases
Solution Approach 1:
The patent recovers and reuses the same standard sample gas multiple times at different introduction amounts. Instead of consuming different standard gases for each concentration level, the system uses the same gas container and adjusts the introduction amount via the adjusting valve, significantly reducing the quantity of standard gases required.
Solution Approach 2:
The patent changes the introduction amount parameter rather than changing the gas concentration parameter. This allows the same standard sample gas to be used repeatedly at different quantities, eliminating the need to purchase and store multiple standard sample gases with different concentrations.
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
Enables identification of analyzer abnormalities using a simple configuration by controlling the introduction amount of sample gas, eliminating the requirement for multiple standard gases and special devices, thereby simplifying operations and reducing costs.
Implementation Method 1
a column that separates a component in a sample gas
Implementation Method 2
a detector that detects, by gas chromatography, the component in the sample gas separated by the column
Data Source
AI summary
A gas analyzer includes: a column that separates a component in a sample gas; a valve that switches, between a test sample gas and a standard sample gas, the sample gas to be supplied to the column; a valve that adjusts an introduction amount of the sample gas to be supplied to the column; a detector that detects, by gas chromatography, the component in the sample gas separated by the column; and a control device. The control device controls the valve to allow the introduction amount to be a predetermined amount, calculates a peak area value of a chromatogram obtained by the detector when the introduction amount is the predetermined amount, and calculates a correspondence between the introduction amount and the peak area value.