Ultrasonic Coupler Assembly with Segmented Quadrilateral Sections
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Solution Overview
Problem
Ultrasonic flow meters face challenges in accurately measuring flow rates in extreme temperature applications due to the high cost and reduced lifespan of transducers, as well as errors introduced by ultrasonic couplers that are not manufactured to strict tolerances, which can distort or redirect ultrasonic signals.
Innovation Solution
An ultrasonic coupler assembly configured with three quadrilateral sections, including a rhomboid section, is used to reduce the temperature extremes to which the transducer is exposed, improving signal quality and allowing a single transducer to be used across a wider temperature range, thereby extending its lifespan and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If an ultrasonic coupler is installed between the ultrasonic transducer and the pipe wall to reduce temperature exposure, then the required temperature rating of the transducer is lowered, but measurement accuracy deteriorates due to signal distortion and redirection in the coupler
Solution Approach 1:
The ultrasonic coupler is divided into three distinct quadrilateral sections with specific geometric relationships. The first quadrilateral section connects to the transducer, the second quadrilateral section connects to the pipe wall, and a rhomboid section bridges them. This segmentation allows each section to be optimized for its specific function while maintaining overall signal integrity and reducing temperature exposure to the transducer.
Solution Approach 2:
The coupler employs asymmetric quadrilateral sections with specific angle relationships rather than symmetric designs. The first quadrilateral has angles different from the second quadrilateral, and the rhomboid section provides asymmetric bridging. This asymmetric geometry is designed to minimize signal distortion and redirection while effectively managing thermal isolation.
2Temperature
If ultrasonic transducers are rated for extreme temperature applications, then they can withstand high temperature pipe walls, but their cost increases significantly
Solution Approach 1:
The ultrasonic coupler serves as an intermediary component between the transducer and the extreme temperature environment of the pipe wall. By positioning the coupler between the transducer and the pipe wall, it creates a thermal barrier that isolates the transducer from direct exposure to extreme temperatures, allowing the use of lower-cost transducers with narrower temperature ratings.
Solution Approach 2:
The coupler is segmented into three quadrilateral sections that work together to manage thermal isolation. This segmentation design allows for optimized thermal management while maintaining acoustic signal integrity, enabling the use of more affordable transducer components.
3Adaptability or versatility
If ultrasonic transducers are consistently exposed to extreme temperatures, then they can measure flow rates in high temperature applications, but their useful life diminishes due to thermal stresses
Solution Approach 1:
The ultrasonic coupler acts as a protective intermediary that shields the transducer from direct exposure to extreme temperatures and thermal stresses. By absorbing or redistributing thermal energy within the coupler structure itself, it protects the transducer and extends its operational lifespan while maintaining adaptability to high temperature applications.
Solution Approach 2:
The segmented quadrilateral design of the coupler creates multiple zones that manage thermal stress distribution. This segmentation prevents concentrated thermal stress on the transducer, thereby extending its service life while maintaining versatility across temperature ranges.
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 configuration lowers the required temperature rating of ultrasonic transducers, increases their applicability, and enhances the accuracy of flow measurements by minimizing signal distortion and reflection, thus extending the transducer's life and reducing certification complexities.
Implementation Method 1
Each ultrasonic transducer, when energized, transmits an ultrasonic signal (e.g., a sound wave) along an ultrasonic path through the flowing fluid
Implementation Method 2
The path velocity (i.e., path or chord velocity (Vp)) of the flowing fluid averaged along an ultrasonic path can be determined as a function of the differential between (i) the transit time of an ultrasonic signal traveling along the ultrasonic path from the downstream ultrasonic transducer upstream to the upstream ultrasonic transducer against the flow direction, and (2) the transit time of an ultrasonic signal traveling along the ultrasonic path from the upstream ultrasonic transducer downstream to the downstream ultrasonic transducer with the flow direction
Data Source
AI summary
An ultrasonic coupler assembly for coupling an ultrasonic transducer to a pipe wall is disclosed, wherein the ultrasonic coupler is configured using three quadrilateral sections to reduce the temperature extreme to which the ultrasonic transducer is exposed and to improve the quality of the ultrasonic signal passing through the ultrasonic coupler.