Light Conductor Gas Analyzer Thermal Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gas concentration determination devices suffer from radiation losses due to incomplete thermal separation and absorption at quartz glass windows, leading to inaccurate measurements and potential ammonia deposits in the analysis chamber.
Innovation Solution
A device with a light conductor connecting the analysis chamber to the detector, featuring a reflective surface and a surrounding sleeve with an air gap for total reflection, minimizing radiation loss and allowing elevated temperatures to prevent ammonia deposits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If quartz glass windows are used to separate the analysis chamber from the detector, then thermal separation is achieved, but radiation losses occur due to absorption at the windows
Solution Approach 1:
A light conductor (optical fiber) is introduced as an intermediary element between the analysis chamber and detector. This mediator transfers optical radiation through total internal reflection while maintaining thermal separation, thereby resolving the contradiction between achieving thermal isolation and minimizing radiation loss.
Solution Approach 2:
The mechanical/physical barrier of quartz glass windows is replaced with an optical fiber-based light conductor. This substitution eliminates absorption losses inherent in glass materials while preserving the thermal separation function through the light conductor's inherent thermal insulation properties.
2Object-affected harmful factors
If the analysis chamber is operated at elevated temperatures to prevent ammonia deposits, then deposit formation is avoided, but radiation transmission to the detector is reduced
Solution Approach 1:
The light conductor acts as a thermal barrier intermediary, allowing the analysis chamber to be heated to high temperatures (preventing ammonia deposits) while the detector remains in a cool environment. The light conductor maintains optical transmission through total internal reflection despite the temperature differential.
Solution Approach 2:
The system exploits the temperature-dependent properties of the light conductor material to achieve both high temperature operation in the analysis chamber and low temperature detection. The light conductor's optical properties remain stable across the temperature range, enabling parameter optimization in separate zones.
3Strength
If quartz glass windows are arranged in a ring configuration, then structural support is provided, but complete thermal separation is not achieved and radiation losses increase
Solution Approach 1:
The light conductor serves as a mediator that eliminates the need for quartz glass windows as thermal barriers. Structural support functions are decoupled from the thermal separation function, allowing each to be optimized independently without compromising the other.
Solution Approach 2:
The system segments the thermal separation function from the structural support function. The light conductor handles optical transmission and thermal isolation, while separate mechanical structures provide support, eliminating the compromises required when combining these functions in a single component.
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 minimizes signal loss, ensures accurate gas concentration measurement by maintaining high temperatures in the analysis chamber and reducing ammonia deposits, while providing complete thermal separation and optimized radiation transmission to the detector.
Implementation Method 1
The connecting channel is configured as a light conductor extending from the analysis chamber to the detector
Implementation Method 2
the analysis chamber can be operated at elevated temperatures to avoid ammonia or isocyanic acid deposits on the walls of the analysis chamber
Implementation Method 3
Oxygen and nitrogen dioxide are formed during the spontaneous reaction of nitrogen monoxide and ozone, with a part of the nitrogen dioxide produced being in an excited electron state. The molecules spontaneously emit this excessive energy in the form of optically measureable fluorescent radiation
Data Source
AI summary
A device for determining a concentration of at least one gas in a sample gas stream includes an analysis chamber, a detector, and a connecting channel. The analysis chamber is configured to have the sample gas stream and a reaction gas stream be introduced therein. The sample gas stream and the reaction gas stream are mixed to a gas mixture which reacts so as to emit an optical radiation. The detector is configured to measure the optical radiation. The connecting channel is configured to connect the analysis chamber to the detector. The connecting channel is configured as a light conductor extending from the analysis chamber to the detector.