Coriolis Flowmeter Conductor Routing on Support Bridge
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Solution Overview
Problem
Existing Coriolis mass flowmeters face accuracy issues due to the routing of conductor arrangements along the measuring tubes, which can interfere with the measurement and cause serial scattering, especially in flowmeters with small cross-sections.
Innovation Solution
A conductor guide structure is arranged on the supporting bridge, allowing the conductor arrangement to be routed directly to the vibration sensor without contacting the measuring tube, reducing interference and enabling a more compact design by attaching the sensors outside the closed area defined by the bridge and tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the conductor arrangement is routed along the measuring tube, then the electrical connection is simplified, but the measurement accuracy deteriorates due to interference with measuring tube vibrations
Solution Approach 1:
The conductor arrangement is extracted from the measuring tube area and routed through the supporting bridge structure instead. This separates the electrical connection function from the vibration measurement function, eliminating the interference that previously degraded measurement accuracy while maintaining ease of conductor routing.
2Ease of manufacture
If the vibration sensor is attached inside the closed area of the supporting bridge, then the conductor routing is simplified, but the device complexity increases due to spatial constraints
Solution Approach 1:
The vibration sensor is positioned outside the closed area of the supporting bridge, utilizing the external spatial dimension. This repositioning allows conductors to be routed along the outer surface of the supporting bridge, avoiding the cramped internal space and reducing device complexity while maintaining routing simplicity.
3Strength
If the conductor arrangement contacts the measuring tube, then the structural support is simplified, but harmful interference is introduced to the vibration signal
Solution Approach 1:
The supporting bridge serves as an intermediary structure that carries both the measuring tube and the conductor arrangement. By routing conductors through the bridge rather than along the tube, the bridge mediates between the electrical connection requirement and the vibration measurement requirement, preventing harmful interference while maintaining structural support.
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 enhances measurement accuracy by minimizing the influence of the conductor arrangement on the measuring tube vibrations and allows for a more flexible tube shape, promoting a compact Coriolis mass flowmeter design.
Implementation Method 1
Mass flowmeters that work according to the Coriolis principle usually have at least one vibration generator, with which the measuring tube is excited to vibrate
Implementation Method 2
at least one vibration sensor for recording the measuring tube vibrations
Data Source
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AI summary
A Coriolis mass flow meter (1) is described and illustrated, comprising at least one curved measuring tube (2), a support bridge (3) extending between the inlet and outlet ends of the measuring tube (2) and fixing the ends of the measuring tube, at least one vibration generator (4) for exciting the measuring tube (2) to vibrate, at least one vibration sensor (5) for recording the vibrations of the measuring tube, an evaluation device for evaluating the vibrations of the measuring tube recorded by the vibration sensor (5), and at least one conductor arrangement (6) connected to the vibration sensor (5) for transmitting the recorded vibrations of the measuring tube to the evaluation device.A Coriolis mass flow meter (1) with increased measuring accuracy is realized by arranging a conductor guide structure (12) on the support bridge (3), the conductor guide structure (12) extending towards the vibration sensor (5), and the conductor arrangement (6) being led directly from the vibration sensor (5) to the conductor guide structure (12) and fixed there.