Ultrasonic Flow Duct Reflection Geometry for Cleaner Gas Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ultrasound devices for measuring gases, such as natural gas or biomethane, face challenges in optimizing the reflection of ultrasonic signals for improved focusing and collimation, as well as in reducing out-of-phase components to enhance signal-to-noise ratio.
Innovation Solution
The proposed solution involves a duct for an ultrasound device that consists of two pieces, a first piece with a tubular portion and a second piece that closes the duct fluid-tight, creating a measurement channel. This design allows for optimized ultrasonic signal reflection and improved signal-to-noise ratio by defining a "V"-shaped reflection path and using a second piece with a dedicated reflection surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the duct is made as a single piece with dividing plates molded in, then manufacturing complexity is reduced, but the ability to optimize ultrasonic signal reflection and focusing is limited
Solution Approach 1:
The duct is divided into two separate pieces: a first piece forming a tubular portion and a second piece that closes the duct. This segmentation allows each piece to be optimized independently - the first piece for manufacturing efficiency and the second piece with a specifically designed reflection surface for ultrasonic signal optimization, thereby resolving the contradiction between ease of manufacture and signal reflection precision.
Solution Approach 2:
The second piece is equipped with a dedicated reflection surface that has specific geometric features (such as inclined planes or curved surfaces) tailored for optimizing ultrasonic signal reflection and focusing. This local quality enhancement at the reflection surface area allows precise control of signal characteristics without complicating the entire duct structure, maintaining ease of manufacture while improving signal optimization.
2Device complexity
If separate openings are made for each ultrasonic sensor, then component integration is improved, but ultrasonic signal reflection optimization is hindered
Solution Approach 1:
The second piece acts as an intermediary element between the external environment and the measurement channel. It provides a specially designed reflection surface that mediates ultrasonic signal behavior, optimizing reflection and focusing properties while maintaining the integrated structure with separate sensor openings. This intermediary structure enables both good component integration and enhanced measurement precision.
3Ease of manufacture
If the duct uses a simple tubular structure, then ease of manufacture is improved, but fluid-tight sealing and signal reflection are compromised
Solution Approach 1:
The second piece merges multiple functions into a single component: it closes the duct to ensure fluid-tight sealing, provides the ultrasonic signal reflection surface, and maintains structural integrity. This merging approach preserves relative structural simplicity while simultaneously achieving reliable sealing and optimized signal reflection, resolving the contradiction between ease of manufacture and reliability.
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 duct and device configuration enhance the reflection and focusing of ultrasonic signals, improve the signal-to-noise ratio by attenuating out-of-phase components, and ensure a fluid-tight seal, making the system more reliable and efficient for gas flow measurement.
Implementation Method 1
the ultrasonic signal emitted by a sensor is reflected from the internal surface of the wall, which is opposite to both sensors, towards the other sensor
Implementation Method 2
two ultrasonic sensors, which are configured to emit and receive ultrasonic signals
Implementation Method 3
the reflection of the ultrasonic signals emitted by a sensor and received by the other sensor be varied and optimized in a simple way, in particular in terms of focusing
Implementation Method 4
optimized the reflection, particularly in terms of focusing and collimation, of the ultrasonic signals towards the receiving ultrasonic sensor
Data Source
AI summary
A duct for the passage of a fluid to be detected/measured, for an ultrasound device includes: first and second pieces configured to be joined and fixed together to define a measurement channel, to be crossed by the fluid to be measured; a first port for the inlet/outlet of the fluid to be measured in/from the duct; and a second port for the outlet or entry of the fluid from/into the duct. The first piece includes a tubular portion with an open/missing area and the second piece is configured to close the first piece that the two pieces define the measurement channel which is closed in a fluid-tight manner in correspondence with the areas of union between the two pieces. The second piece includes an internal area configured to be lapped by the fluid passing through the duct and in which a signal emitted by a sensor is reflected.