Vibrating Tube Mass Flow Transducer with Parallel Segmented Tubes
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Solution Overview
Problem
Conventional measuring transducers for high mass flow rates in pipelines face challenges with large geometric dimensions, high empty mass, and increased pressure loss, making them unsuitable for applications with extremely hot or cold media and fluctuating temperatures.
Innovation Solution
A measuring transducer with eight bent, V-shaped or circular arc-shaped measuring tubes and an electro-mechanical exciter mechanism, designed for compact construction and low pressure loss, utilizing a unique tube arrangement and symmetrical geometry to minimize transverse forces and enhance oscillation quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional measuring transducers are used for high mass flow rates, then measurement capability is achieved, but geometric dimensions become large and empty mass increases
Solution Approach 1:
The invention divides the single large-bore flow path into multiple parallel measuring tubes (e.g., four tubes arranged in a 2x2 pattern). This segmentation allows the same measurement capability for high mass flow rates to be achieved with smaller individual tube dimensions, thereby reducing the overall geometric footprint and empty mass of the transducer while maintaining measurement accuracy.
2Measurement precision
If conventional measuring transducers are used for high mass flow rates, then measurement capability is achieved, but pressure loss increases
Solution Approach 1:
By segmenting the flow into multiple parallel tubes with optimized individual dimensions, the flow velocity in each tube can be reduced compared to a single large tube, thereby reducing turbulent losses. Additionally, the compact arrangement minimizes the overall length of the flow path through the transducer, further reducing pressure loss while maintaining measurement capability.
3Volume of moving object
If compact construction is implemented, then geometric dimensions are reduced, but manufacturing complexity increases
Solution Approach 1:
The invention combines multiple measuring tubes, exciter mechanisms, and sensor arrangements into a single integrated transducer housing. The flow dividers are designed to simultaneously support multiple tubes and provide sealing surfaces for pipeline connection. This merging approach achieves compact construction while standardizing manufacturing processes across the integrated components.
Solution Approach 2:
The flow dividers serve multiple functions: they support the measuring tubes, provide sealing surfaces for pipeline flange connections, and guide the flow distribution among parallel tubes. The transducer housing simultaneously protects internal components and provides the pressure boundary. This multi-functionality reduces the number of separate parts and simplifies manufacturing while achieving compact dimensions.
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 solution enables precise measurement of high mass flow rates with reduced pressure loss and compact dimensions, suitable for extreme temperatures and fluctuating media conditions, while maintaining high oscillation quality and minimizing manufacturing costs.
Implementation Method 1
the—here most often electro-dynamic—exciter mechanism is embodied in such a manner that, therewith, the two measuring tubes are differentially excitable
Implementation Method 2
produce reaction forces in the medium, e.g. Coriolis forces corresponding to the mass flow
Implementation Method 3
the measuring tubes are caused to vibrate during operation, driven by an exciter mechanism serving for producing or maintaining mechanical oscillations
Data Source
AI summary
A measuring transducer comprises a transducer housing, of which an inlet-side housing end is formed by means of an inlet-side flow divider having eight, mutually spaced flow openings and an outlet-side housing end is formed by means of an outlet-side flow divider having eight, mutually spaced flow openings as well as a tube arrangement with eight bent measuring tubes for the conveying flowing medium, which, forming flow paths connected for parallel flow, are connected to the flow dividers, wherein each of the eight measuring tubes in each case opens with an inlet-side measuring tube end into one of the flow openings of the flow divider, and in each case opens with an outlet-side measuring tube end into one of the flow openings of the flow divider. An electro-mechanical exciter mechanism of the measuring transducer serves for producing and/or maintaining mechanical oscillations of the measuring tubes.