Flow Measurement Device With Axial Circulation and Optical Detection
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Solution Overview
Problem
Existing flow measurement devices suffer from reduced accuracy due to uneven flow speeds within the measuring chamber, leading to dirt accumulation and measurement inaccuracies, particularly in the peripheral regions.
Innovation Solution
A flow measurement device with a central body configuration that guides fluid flow axially past a circulating element, using upstream and downstream central body portions to maintain high flow speed and cleanliness, incorporating window areas for light beam obstruction detection to calculate flow rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the flow is directed radially inwardly at the measuring chamber, then the ball can circulate in the measuring chamber, but the flow speed becomes lowest in the peripheral parts causing dirt accumulation and reduced measurement accuracy
Solution Approach 1:
The patent inverts the conventional radial inward flow direction by implementing an axial flow direction through the measuring chamber. The flow enters axially along the central body and exits radially outward, reversing the traditional flow pattern. This inversion ensures that flow speed remains high throughout the measuring chamber including peripheral regions, preventing dirt accumulation while maintaining measurement accuracy.
Solution Approach 2:
The patent applies local quality by creating different flow conditions in different regions of the measuring chamber. The axial flow configuration ensures that flow speed is maintained at high levels in the peripheral parts where dirt accumulation would otherwise occur, while the central region allows the ball to circulate effectively. This localized optimization of flow characteristics addresses the specific problem of dirt accumulation in peripheral regions without compromising overall measurement precision.
2Measurement precision
If the measuring section is widened to maintain high flow speed, then measurement accuracy improves, but the device size increases
Solution Approach 1:
The patent transitions from a radial flow configuration to an axial flow configuration, changing the dimension in which the flow occurs. By directing flow axially through the measuring chamber rather than radially, the design maintains high flow speeds without requiring an increased measuring chamber diameter. This dimensional change allows the device to remain compact while preserving measurement accuracy.
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
Maintains high flow speed for accurate measurements, reduces dirt accumulation, and enables compact design without widening the measuring section, enhancing measurement precision and reliability.
Implementation Method 1
The measuring section is provided with a first window area and a second window area that allow a light beam to pass from outside of and through the first window area, into and across the interior of the housing, and then out through the second window area
Data Source
AI summary
A device for flow measurement, comprising a housing, a measuring section provided with a first window area and a second window area that allow a light beam to pass from outside of and through the first window area, into and across the interior of the housing, and then out through the second window area. The device comprises upstream central body portion and a downstream central body portion. The downstream central body portion causes the fluid to encircle the downstream central body portion as the fluid flows from the measuring section to the outlet. The two central body portions together define a path for guiding a circulating element. The circulating element will repeatedly and alternatingly pass by the first window area and the second window area to momentarily prevent at least a part of said light beam passing through the first window area from reaching the second window area.