Buoyancy Displacer Array for Fluid Density Profiling
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Solution Overview
Problem
Existing level and density measurement systems for fluid columns, particularly those involving nucleonic and ultrasonic methods, face limitations such as health and safety concerns due to radioactive materials and restricted use, and vertical resolution limitations in detecting interfaces between different fluids.
Innovation Solution
A mechanical buoyancy-based system comprising a vertical array of measurement modules with displacers and force measurement devices, where each module includes a support arm, a displacer, and a force measurement device, connected to a data processing unit to generate a density profile, offering improved accuracy and safety by protecting the force measurement devices within the displacers and isolating electronics from the fluid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If nucleonic sources are used to measure density profile, then measurement capability is achieved, but health and safety restrictions and limited use result
Solution Approach 1:
The patent replaces the nucleonic (radioactive) measurement system with a mechanical buoyancy-based system. Multiple displacers of different densities are suspended at different depths in the fluid column, and their positions are determined by buoyancy forces. This mechanical substitution eliminates the need for radioactive materials while achieving density profile measurement through the relationship between displacer density, fluid density, and buoyant force.
2Measurement precision
If ultrasonic transmitters and detectors are used to detect fluid interfaces, then interface detection is achieved, but vertical resolution is limited by housing spacing
Solution Approach 1:
The patent segments the measurement function into multiple independent displacers positioned at different depths within the fluid column. Each displacer independently measures the density at its specific depth, and by combining measurements from multiple segments (displacers), a complete density profile is constructed. This segmentation allows for finer vertical resolution compared to a single ultrasonic housing system.
3Ease of operation
If force measurement devices are exposed to fluid, then measurement function is maintained, but contamination and failure risks increase
Solution Approach 1:
The patent introduces displacers as intermediary elements between the force measurement devices and the fluid. The displacers are buoyant bodies that interact with the fluid through buoyancy forces, while the force measurement devices (strain gauges) remain enclosed within the displacers and do not directly contact the fluid. This intermediary arrangement allows the measurement function to be maintained while protecting the sensitive electronic components from contamination and failure.
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 solution enhances the sensitivity and accuracy of density profiling for complex multi-layered fluid columns, reduces contamination and failure risks, and ensures electrical safety in hazardous environments, allowing precise measurement of fluid interfaces without nucleonic sources.
Implementation Method 1
a force measurement device to measure an upward force on the displacer in the fluid material
Data Source
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AI summary
An apparatus for determining a vertical level or density profile of a multi-layered fluid column including at least two different liquids, the apparatus comprising: an elongate vertical support member; and a plurality of measurement modules spaced apart, and supported along, the elongate vertical support member to form a vertical array of measurement modules; wherein each measurement module comprises: a support arm mounted to the elongate vertical support member and extending outwardly from the elongate vertical support member; a displacer carried on the support arm; and a force measurement device configured to measure a force attributable to a mass of the displacer mediated by a buoyancy of the displacer in the fluid column, wherein the plurality of measurement modules have a data connection to a data processing unit for transmitting measurement data from the plurality of measurement modules to the data processing unit, and wherein the data processing unit is configured to process the measurement data from the plurality of measurement modules and generate a level or density profile of the fluid column.