Ultrasonic Sensor Assembly Cradle for Flow Meter Distortion Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing detection systems for fluid properties in conduits face challenges in accurately measuring fluid flow rates and temperatures due to temperature variations and mechanical distortions, which affect the sensitivity and reliability of measurements.
Innovation Solution
A sensor assembly is designed with a sensor cradle that mounts transducers orthogonally to allow ultrasonic wave transmission, featuring a protective housing and wave-guides to reduce noise and mechanical distortion, and includes a thermistor for temperature compensation, enabling accurate fluid property measurement across varying temperatures and pipe materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transducers are mounted directly on the conduit without a sensor cradle, then the device complexity is reduced, but the measurement precision deteriorates due to mechanical distortions and temperature variations affecting transducer orientation
Solution Approach 1:
The sensor assembly is divided into separate functional components: a sensor cradle that holds transducers, a mounting device that couples to the conduit, and a protective housing. This segmentation allows each component to be optimized independently - the cradle maintains precise transducer orientation while the mounting device handles mechanical coupling, resolving the contradiction between measurement precision and device complexity
Solution Approach 2:
The sensor cradle acts as an intermediary component between the mounting device and the transducers. It provides a stable platform that maintains precise transducer orientation and positioning, isolating the transducers from mechanical distortions and temperature variations in the conduit environment, thereby improving measurement precision without requiring direct mounting of transducers on the conduit
2Measurement precision
If transducers are fixed rigidly to maintain precise orientation, then the measurement precision is improved, but the reliability deteriorates due to sensitivity to temperature variations and mechanical distortions
Solution Approach 1:
The sensor cradle is designed with features that preemptively counteract the effects of temperature variations and mechanical distortions. By providing a thermally isolated mounting environment and mechanical compliance features within the cradle structure, the system prevents these environmental factors from affecting transducer orientation, thereby maintaining both precision and reliability under varying conditions
Solution Approach 2:
The sensor cradle allows for thermal expansion and mechanical deformation through designed compliance features, changing the physical parameters of the mounting structure in response to environmental conditions. This prevents stress transmission to the transducers while maintaining their operational orientation, improving reliability without sacrificing measurement precision
3Adaptability or versatility
If the sensor assembly is designed to accommodate different pipe materials and diameters, then the adaptability is improved, but the manufacturing precision requirements worsen due to varying tolerances for different conduit types
Solution Approach 1:
The mounting device is designed with universal coupling features that can accommodate different conduit materials and diameters through adjustable mounting mechanisms. The sensor cradle incorporates compliance features that adapt to varying conduit geometries, allowing a single design to function across multiple application scenarios without requiring tight manufacturing tolerances for each specific conduit type
Solution Approach 2:
The sensor assembly incorporates dynamic mounting features that allow adjustment and adaptation to different conduit configurations. The mounting device can be positioned and secured at various locations along the conduit, and the sensor cradle can accommodate slight variations in conduit geometry, enabling versatile application across different pipe materials and diameters while maintaining consistent manufacturing tolerances
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 sensor assembly provides reliable and accurate measurements of fluid flow rates and temperatures by compensating for temperature variations and mechanical distortions, ensuring consistent performance across different pipe materials and diameters.
Implementation Method 1
transducers maintained at the sensor cradle are oriented to allow transmission of ultrasonic waves traversing the conduit
Implementation Method 2
measuring properties of a fluid flowing in the conduit
Implementation Method 3
includes a thermistor for temperature compensation
Data Source
AI summary
An ultrasonic fluid flow meter can include a casing structure including a hook portion configured to engage a conduit to secure the casing structure to the conduit. The ultrasonic fluid flow meter can include a transducer block disposed within the casing structure and seating ultrasonic transducers. A distance between the hook portion and the transducer block along a direction transverse to the transducer block can be adjustable. The ultrasonic transducers can face the conduit when the casing structure is secured to the conduit via the hook portion.