Flow Meter Flow Straightener Modular Mounting
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Solution Overview
Problem
Flow meters, particularly ultrasonic meters, exhibit a dependence on flow profiles within the measuring section, which varies with different housing sizes and flow channel lengths, leading to inconsistent measurements and complex design modifications.
Innovation Solution
A flow straightener is positively attached to a holding device that secures the measuring tube to the housing, allowing consistent positioning relative to the measuring tube regardless of flow channel length, enabling modular assembly and easy adaptability without complex design changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flow straighteners are mounted independently in the housing area, then they can be positioned for different housing sizes and channel lengths, but the distance to the measuring section varies leading to inconsistent flow profiles and measurement accuracy
Solution Approach 1:
The flow straightener is merged with the measuring insert by attaching it to the holding device that secures the measuring tube. This integration ensures that the flow straightener maintains a consistent distance from the measuring section, eliminating the problem of varying distances in independently mounted flow straighteners while preserving adaptability to different housing configurations.
Solution Approach 2:
The flow meter is segmented into modular components: the holding device with the measuring tube forms a measuring insert that can be assembled separately and then inserted into the housing as a unit. The flow straightener is attached to this insert, creating a standardized assembly that maintains consistent positioning regardless of housing variations.
2Measurement precision
If flow straighteners are integrated with the measuring tube on a common holding device, then consistent distance and flow profile are ensured, but the device complexity increases
Solution Approach 1:
The holding device is designed as a multi-functional component that simultaneously performs multiple tasks: it secures the measuring tube in position and provides an attachment point for the flow straightener. This universal design achieves consistent flow profiling without requiring separate mounting mechanisms, thereby limiting the increase in device complexity.
3Measurement precision
If different flow straighteners are used for different flow channel geometries, then measurement accuracy is maintained, but the manufacturing and inventory complexity increases
Solution Approach 1:
The flow straightener is designed as a separate, interchangeable component that can be selected and attached to the holding device based on the specific flow channel geometry and application requirements. This allows local optimization for different conditions without requiring complex integrated designs, maintaining measurement accuracy while simplifying manufacturing through modular interchangeability.
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 design ensures precise and robust flow direction, facilitating easy assembly and adaptability across different flow channel geometries, enhancing measurement accuracy and flexibility in manufacturing.
Implementation Method 1
a flow straightener (8), arranged between the inlet opening (4) and the measuring tube (6) or between the measuring tube (6) and the outlet opening (5), which directs the flow direction in the flow channel (3)
Implementation Method 2
a measuring tube (6) inserted into the flow channel which narrows the flow cross-section in a section of the flow channel
Implementation Method 3
one of which emits ultrasonic waves that the other receives. By measuring the transit time of the ultrasound between these transducers
Implementation Method 4
two ultrasonic transducers, one of which emits ultrasonic waves that the other receives
Data Source
Figure 1~3
Figure 4~5
Figure 6~7
AI summary
Flow meter for measuring the flow rate of a fluid, comprising a housing (2) with a flow channel (3) through which the fluid can be guided from an inlet opening (4) of the housing (2) to an outlet opening (5) of the housing (2), a measuring tube (6) which is inserted into the flow channel (3) and narrows the flow cross-section in a section (17) of the flow channel (3), and a holding device (7) by which the measuring tube (6) is held on the housing (2), wherein a flow straightener (8) is arranged between the inlet opening (4) and the measuring tube (6) and/or between the measuring tube (6) and the outlet opening (5), the flow straightener having at least one opening (9) through which the fluid can flow, wherein the flow straightener (8) is designed as a separate component which is attached to the holding device (7) by a force-fit or form-fit connection.