Coriolis Transducer Magnet Holder Segmentation
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Solution Overview
Problem
Coriolis measuring devices face challenges in achieving precise and robust seating of magnets, leading to lower sensitivity due to unsharp magnetic field transitions and difficulties in magnet positioning.
Innovation Solution
A Coriolis measuring transducer design featuring a holder with recesses for precise placement of magnet groups, using ceramic adhesive for securement, and a non-magnetic material for the holder to enable robust and cost-effective positioning of magnets relative to coil devices, ensuring sharp magnetic field edges and effective oscillation induction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a magnetic field producing element with a planar coil and U-shaped element is used, then the structure is simple, but the magnetic field transition is unsharp resulting in lower sensor sensitivity
Solution Approach 1:
The magnetic field producing element is segmented into multiple discrete magnets arranged in a specific pattern within the holder, allowing for sharper magnetic field transitions while maintaining structural simplicity. The segmentation enables precise control over magnetic field distribution without requiring complex continuous magnetic structures.
Solution Approach 2:
A non-magnetic holder with precisely defined recesses serves as an intermediary structure that positions and constrains the magnets, enabling sharp magnetic field edges. The holder acts as a mediator between the simple overall structure and the complex magnetic field requirements, providing mechanical precision without magnetic interference.
2Measurement precision
If magnets with spatially defined magnetic field are used, then sensor sensitivity is improved, but simple and robust seating of the magnets becomes challenging
Solution Approach 1:
The holder is pre-formed with precisely defined recesses during manufacturing, establishing the exact positioning framework before magnets are installed. This preliminary structural preparation ensures that magnets can be easily and robustly seated in their correct positions without complex assembly procedures, achieving both precision and ease of manufacture.
Solution Approach 2:
The holder with its precisely defined recesses acts as an intermediary positioning mechanism that simplifies magnet seating. The recesses provide mechanical constraints that guide magnet placement, transforming the complex task of precise magnet positioning into a simple and robust assembly process while maintaining the spatially defined magnetic field characteristics.
3Manufacturing precision
If magnets are positioned with high precision, then magnetic field edge sharpness is improved, but manufacturing complexity increases
Solution Approach 1:
The holder structure is segmented into distinct features including separate recesses for each magnet and intermediate walls, allowing for simplified manufacturing of each component while achieving precise overall positioning. The segmentation enables standard manufacturing processes to produce precise geometries without requiring complex monolithic structures.
Solution Approach 2:
The holder serves as an intermediary structure that decouples the precision positioning requirement from the manufacturing complexity. By providing pre-formed recesses with precise dimensions and orientations, the holder enables high-precision magnet positioning through simple insertion and securing processes, avoiding the need for complex manufacturing procedures.
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 and robust positioning of magnets, enhancing the sensitivity and accuracy of mass flow and density measurements by maintaining a sharp magnetic field edge and reducing manufacturing costs.
Implementation Method 1
at least one exciter, which is adapted to excite the at least one measuring tube to execute oscillations; at least two sensors, which are adapted to register oscillations of the at least one measuring tube; wherein at least one exciter and/or at least one sensor have/has, in each case, a coil device with, in each case, at least one coil, as well as, in each case, a magnet device
Implementation Method 2
the magnet device has a holder and at least a first magnet group having at least one magnet and at least a second magnet group having at least one magnet
Data Source
AI summary
The invention relates to a Coriolis measuring transducer of a Coriolis measuring device comprising: at least one measuring tube; at least one exciter; at least two sensors; wherein at least one exciter or at least one sensor has a coil device and a magnet device, wherein the magnet device has a holder and at least a first magnet group and at least a second magnet group, wherein the holder has a body with a body length axis and a first end and a second end wherein the first end has an end surface, wherein the body has three recesses, wherein a central recess is separated, in each case, from an outer recess by, in each case, an intermediate wall, wherein each intermediate wall has an opening, and wherein the first magnet group is arranged in a first opening, and wherein the second magnet group is arranged in a second opening.