Optical Measurement Flow Cell With Diffuser Section
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Solution Overview
Problem
Conventional measuring cells for fluid flow are limited in their ability to prevent crystal precipitation or sedimentation, which impairs measurement accuracy, especially during crystallization processes.
Innovation Solution
A measuring cell design featuring a channel with an inlet section, a diffuser section, and a measuring section, where the cross-sectional area increases, and viewing windows that allow for rectilinear fluid flow, preventing dead spaces and sediment formation, along with a temperature control device to maintain optimal conditions for measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional measuring cells are used for fluid flow measurement, then the measurement structure is simple, but crystal precipitation and sedimentation occur which impairs measurement accuracy
Solution Approach 1:
The channel is divided into distinct functional sections: inlet section, diffuser section, and measuring section. This segmentation allows each section to perform its specific function - the diffuser section prevents sedimentation while the measuring section provides accurate measurement, thereby resolving the contradiction between measurement accuracy and harmful precipitation effects
Solution Approach 2:
The diffuser section acts as an intermediary element between the inlet and measuring sections. It mediates the fluid flow by gradually expanding the cross-sectional area, which prevents direct sedimentation into the measuring section while maintaining measurement accuracy, thus resolving the contradiction
2Object-generated harmful factors
If the channel cross-sectional area is increased to prevent sedimentation, then sedimentation is reduced, but the device complexity increases
Solution Approach 1:
The channel cross-sectional area is not uniformly increased throughout, but only in the diffuser section where it is needed to prevent sedimentation. The measuring section maintains its original dimensions for accurate measurement. This localized modification reduces device complexity while still preventing sedimentation
3Measurement precision
If viewing windows are positioned to allow light beam passage, then optical measurement is enabled, but dead spaces may form causing fluid flow disturbances
Solution Approach 1:
The diffuser section is positioned upstream of the measuring section to preliminarily condition the fluid flow before it reaches the measurement area. By preventing sedimentation and establishing uniform flow in advance, the diffuser section ensures that the viewing windows can be positioned for optimal optical measurement without creating dead spaces that would disturb flow uniformity
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
The design ensures accurate and unfalsified measurements by maintaining a uniform flow profile and preventing unwanted precipitation, while the temperature control device helps in maintaining conditions that prevent particle precipitation, thereby enhancing measurement reliability.
Implementation Method 1
the light source generates a light beam through the viewing windows of the measuring cell and this beam is detected by the camera module after passing through the viewing windows
Implementation Method 2
The cross-sectional area of the channel increases in the diffuser section towards the measuring section
Data Source
Figure 1
Figure 2
Figure 3~7
AI summary
The invention relates to a measuring cell for analysing a fluid flow, wherein the measuring cell has a channel for conducting the fluid flow, which channel is divided into different sections and the cross section thereof is perpendicular to a longitudinal axis. The invention also relates to a measuring device comprising such a measuring cell.