Upright Optical Cell Layout for Stable Gas Analyzer Alignment
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Solution Overview
Problem
Conventional gas analyzing devices experience optical axis deviation due to moments generated by the weight of optical components, particularly when attached to varying piping layouts, leading to reduced signal intensity and analysis accuracy, especially in multipass cells.
Innovation Solution
The gas analyzing device configures the optical cell and surface plate to stand upright relative to the connection direction, reducing the moment in the gravity direction and minimizing optical axis deviation by shortening the distance to the center of gravity, and incorporates a beam member to connect the gas cell and optical cell, ensuring accurate alignment and thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the optical cell and surface plate are laid down in a conventional configuration, then the device structure is simple and easy to manufacture, but the moment in the gravity direction is large causing optical axis deviation
Solution Approach 1:
The patent changes the orientation of the optical cell and surface plate from a horizontal (laid down) arrangement to a vertical (standing up) arrangement. This dimensional change repositions the center of gravity closer to the attachment point, reducing the gravitational moment that causes optical axis deviation, while maintaining structural simplicity
2Reliability
If the optical cell is made larger to accommodate the optical system, then the optical system can be properly supported, but the device size increases and weight increases
Solution Approach 1:
By standing up the optical cell and surface plate vertically, the patent achieves more efficient space utilization. This orientation allows the optical system to be compactly arranged along the vertical axis, reducing the horizontal footprint and overall device size while maintaining adequate support structure
3Ease of operation
If the surface plate is positioned farther from the gas cell, then there is more space for optical components, but the moment in the gravity direction increases causing more optical axis deviation
Solution Approach 1:
The vertical orientation of the surface plate allows optical components to be arranged in the vertical direction rather than horizontally spreading out. This enables the surface plate to be positioned closer to the gas cell attachment point, reducing the gravitational moment while still providing sufficient space for optical components along the vertical axis
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 effectively reduces optical axis deviation, enhances space utilization, achieves miniaturization and weight reduction, and improves maintainability by allowing precise optical axis adjustment and thermal control, while maintaining high analysis accuracy.
Implementation Method 1
a gas analyzing device which uses an infrared absorption method whereby a gas introduced into a gas cell is irradiated with a laser beam, and a component to be measured contained in the gas is analyzed by detecting the laser beam having penetrated the gas
Data Source
AI summary
A gas analyzing device that irradiates a gas with a laser beam and detects the laser beam having penetrated the gas to analyze a component to be measured contained in the gas is configured so as to reduce a moment in a gravity direction generated about a fulcrum of an attachment location or the like is reduced to suppress optical deviation as much as possible. The gas analyzing device includes a gas cell attached to a piping through which the gas flows and into which the gas is introduced, and an elongated optical cell connected to the gas cell from a predetermined connection direction. The optical cell accommodates an optical system supported by a surface plate in a state of being disposed on an optical path of the laser beam. The optical cell stands up with respect to the connection direction.