Rotating Cylindrical Cell for Continuous Optical Fluid Measurement
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Solution Overview
Problem
Existing measurement instruments that use light to measure fluid face challenges in continuous measurement due to the blocking of light paths by moving cleaning bodies, especially in highly contaminated fluids.
Innovation Solution
A measurement instrument design that includes a cylindrical cell for storing measurement fluid, a light source outside the cell for irradiating the fluid, a detector for capturing transmitted or scattered light, a cleaning mechanism inside the cell to clean the inner surface, and a drive mechanism to rotate the cell, ensuring continuous measurement without light blockage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a moving cleaning body is provided in the cell to clean the inner wall, then the inner wall can be cleaned, but the optical path is blocked during measurement
Solution Approach 1:
The cell is made rotatable about its central axis, transforming the cleaning mechanism from a static blocking object to a dynamic system where the cleaning body rotates with the cell. This ensures the cleaning body is never in the optical path during measurement, as it moves along with the rotating cell wall.
Solution Approach 2:
Instead of having the cleaning body move along the cell wall while the cell remains stationary (causing light blocking), the invention inverts the approach by rotating the entire cell along with the cleaning body. This reverses the relative motion between the cleaning body and the optical path, eliminating the blocking effect.
2Reliability
If cleaning frequency is increased for highly contaminated fluid, then contamination is reduced, but measurement continuity is disrupted
Solution Approach 1:
The cell rotates continuously at a constant speed, allowing the cleaning body to continuously clean the inner wall without interruption. This continuous rotation enables uninterrupted measurement while maintaining effective cleaning, as the cleaning action occurs throughout the rotation cycle rather than in discrete stops.
3Reliability
If a cleaning body is provided inside the cell, then the inner peripheral surface can be cleaned, but the device complexity increases
Solution Approach 1:
The cleaning mechanism is merged with the cell structure itself. The cleaning body is fixed to the cell or rotates with the cell, combining the cleaning function with the cell's rotational motion. This integration eliminates the need for separate, complex cleaning mechanisms and reduces overall device complexity.
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 solution allows for uninterrupted continuous measurement of fluid by rotating the cell to clean its inner surface without obstructing the light path, effectively addressing the issue of light blockage caused by traditional cleaning mechanisms.
Implementation Method 1
a light source that is arranged outside the cell and irradiates the measurement fluid with inspection light
Implementation Method 2
a detector that is arranged outside the cell and detects transmitted light or scattered light generated from the measurement fluid
Data Source
AI summary
A measurement instrument comprises a cylindrical cell that stores a measurement fluid, a light source that is arranged outside the cell and irradiates the measurement fluid with inspection light, a detector that is arranged outside the cell and detects transmitted light or scattered light generated from the measurement fluid, a cleaning mechanism that is arranged inside the cell and cleans an inner peripheral surface of the cell, and a drive mechanism that rotates the cell about a central axis.