Pressure Modulator Diaphragm Control for Fluid Isolation
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Solution Overview
Problem
Existing technologies face challenges in controlling the transmission of fluid pressure signals while maintaining isolation between multiple fluids, particularly in environments like underwater hydrocarbon processing, where contamination and signal interference are concerns.
Innovation Solution
An apparatus with movable diaphragms and a variable volume of fluid between passageways, allowing for selective control of pressure signal passage by varying the diaphragm positions and fluid volume, enabling either transmission or blocking of pressure signals between fluids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple fluids are isolated from each other to prevent contamination and chemical attack, then reliability is improved, but the ability to control transmission of pressure signals between fluids deteriorates
Solution Approach 1:
A third fluid is introduced as an intermediary substance in a chamber between the first and second fluids. This third fluid allows pressure signal transmission between the isolated first and second fluids while maintaining their physical separation and preventing contamination. The third fluid acts as a mediator that enables communication without direct contact between the potentially contaminating fluids.
Solution Approach 2:
The system is divided into separate passageways for the first and second fluids, with an intermediate chamber containing the third fluid. This segmentation allows each fluid to remain isolated in its own passageway while still enabling pressure signal transmission through the segmented chamber structure filled with the intermediary third fluid.
2Loss of information
If diaphragms are positioned to permit pressure signal passage between fluids, then signal transmission is improved, but isolation between fluids deteriorates
Solution Approach 1:
The third fluid in the chamber serves as an intermediary that transmits pressure signals between the first and second fluids through the diaphragms while preventing direct fluid contact. The diaphragms transmit pressure information through the intermediary third fluid without allowing the first and second fluids to mix or contaminate each other.
Solution Approach 2:
Movable diaphragms (flexible films) are used to transmit pressure signals across the chamber boundaries. These thin flexible barriers allow pressure wave transmission while maintaining fluid isolation. The diaphragms respond to pressure changes in one fluid and transmit the signal through the third fluid to the other side without permitting fluid passage.
3Adaptability or versatility
If a device varies the volume of third fluid to control diaphragm positions, then signal control versatility is improved, but device complexity increases
Solution Approach 1:
The device for varying the volume of the third fluid is configured to automatically move the diaphragms to appropriate positions based on the volume change. The system self-regulates the diaphragm positioning through the volume variation mechanism, reducing the need for additional complex control systems while maintaining versatile signal control capability.
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
Effectively manages the transmission of pressure signals between fluids, ensuring isolation and preventing contamination, while allowing for controlled communication of multiple signals within multiple fluids, addressing the need for improved signal control in harsh environments.
Implementation Method 1
The first and second diaphragms permit passage of a pressure signal between the first fluid in the first passageway and the second fluid in the second passageway through the third fluid bound between the first and second diaphragms
Implementation Method 2
A variation of the volume of the third fluid moves the first and second diaphragms. The first and second diaphragms each have at least one position corresponding to an increase in volume of the third fluid between the first and second diaphragms by the device that prohibits passage of a pressure signal
Data Source
Figure 1~2
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Figure 7~8
AI summary
An apparatus, for controlling signal passage, includes a first passageway (16) for a first fluid (14), a second passageway (26) for a second fluid (24), and an interposed chamber (30). A first, movable diaphragm (40) at a first chamber junction and a second, movable diaphragm (50) at a second chamber junction, with a third fluid (54) bound there between and interposed between the first and second passageways. A device (60) varies a volume of the third fluid bound between the diaphragms and thus moves the diaphragms. The diaphragms each have at least one position that permits passage of a pressure signal between the first fluid in the first passageway and the second fluid in the second passageway through the third fluid bound between the diaphragms. The diaphragms each have at least one position that prohibits passage of a pressure signal.