Clean Gas Curtain Layout for Particle-Free Concentration Windows
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Solution Overview
Problem
Particle buildup on measurement windows impedes accurate concentration measurement of fire suppression agents, leading to inaccuracy in fire suppression systems.
Innovation Solution
A clean gas curtain is formed at each end of the interaction region adjacent to the measurement windows to prevent particle buildup, using either a pressurized clean gas source or filtered clean gas to maintain clear windows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If particle-laden gas is introduced into the measurement chamber for concentration measurement, then the measurement function is achieved, but particle buildup on windows occurs leading to measurement inaccuracy
Solution Approach 1:
A curtain of clean gas is introduced as an intermediary substance between the particle-laden gas and the measurement windows. This clean gas barrier prevents particles from reaching and depositing on the windows while allowing light transmission for measurement, thus resolving the contradiction between achieving measurement and preventing particle buildup
Solution Approach 2:
The harmful particles are extracted or removed from the path to the windows by introducing clean gas that displaces the particle-laden gas away from the window surfaces. This separation ensures particles do not contact the windows while the measurement function continues
2Reliability
If clean gas curtains are introduced at both ends of the interaction region, then particle buildup is prevented, but device complexity increases
Solution Approach 1:
The clean gas introduction system is segmented into multiple independent inlet ports positioned at different locations (first and second axial positions) around the interaction region. This segmentation allows the clean gas to form effective curtains at critical locations without requiring a complex centralized system, distributing the functionality across simpler modular components
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
Prevents particle adherence to windows, ensuring accurate and continuous measurement of fire suppression agent concentration, thereby enhancing the effectiveness of fire suppression systems.
Implementation Method 1
introducing a curtain of clean gas into the measurement chamber at each end of the interaction region
Implementation Method 2
transmitting light into an interaction region in which the light interacts with a sample of gas from the environment
Data Source
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AI summary
A particle concentration measurement system includes a first window and a second window in a housing. The first window and the second window respectively define a first end and a second end of an interaction region between the first window and the second window. The system also includes a particle-laden gas inlet through a wall of the housing between the first window and the second window. The particle-laden gas inlet introduces particle-laden gas from an environment that includes particles mixed with other materials into the interaction region. A first set of clean gas inlets through the wall of the housing are at different radial positions of the housing and at a first axial location of the housing, and a second set of clean gas inlets through the wall of the housing are at different radial positions of the housing and at a second axial location of the housing.