Coaxial Throttling Component for Stable Differential Pressure Flow Sensing
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Solution Overview
Problem
Existing flowrate measurement devices face challenges in generating a sensitive and clear differential pressure signal while stabilizing the flow state, often requiring lengthy straight pipes upstream and downstream to ensure accurate measurement, which limits their application and precision.
Innovation Solution
A throttling component with a central element and peripheral elements arranged coaxially, forming annular fluid channels that accelerate fluid velocity and standardize flow velocity distribution, reducing the need for upstream and downstream straight pipes and enhancing measurement precision by generating a stable differential pressure signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional flow sensors (orifice plate, Venturi tube, etc.) are used for flowrate measurement, then measurement function is achieved, but lengthy upstream and downstream straight pipes are required to ensure standard pipe flow
Solution Approach 1:
The patent divides the flow conditioning function into multiple porous channels arranged in specific patterns, where each channel contributes to flow stabilization. This segmentation allows the device to achieve standard pipe flow conditions without requiring lengthy straight pipes upstream and downstream, as the multiple channels work together to condition the flow within a compact structure.
Solution Approach 2:
The patent employs porous channels with specific pore sizes and distributions at different locations within the device. The local structure is optimized to create controlled flow conditions - the porous material provides localized flow conditioning that compensates for the absence of long straight pipes, enabling standard flow conditions to be achieved within a compact device footprint.
2Device complexity
If porous channel devices are used to condition flow and enable measurement, then device complexity is reduced, but the differential pressure signal sensitivity and clarity are insufficient
Solution Approach 1:
The patent employs asymmetric arrangements of porous channels with different pore sizes, shapes, and distributions rather than uniform symmetric patterns. This asymmetric design creates more effective flow conditioning and generates clearer differential pressure signals by optimizing the flow paths and pressure distribution, thereby improving signal quality while maintaining simple device structure.
Solution Approach 2:
The patent optimizes multiple parameters of the porous channels including pore size, porosity, channel diameter, length, and arrangement patterns. By carefully adjusting these parameters, the device achieves both simple structure and high differential pressure signal quality, as the optimized parameters enhance flow conditioning effectiveness and signal generation without increasing device complexity.
3Stability of the object's composition
If multiple porous channels are arranged to reduce mutual influence of flow separation, then flow stability is improved, but the differential pressure signal generation is compromised
Solution Approach 1:
The patent optimizes the parameters of multiple porous channels including varying pore sizes, porosity ratios, channel dimensions, and spacing arrangements. These parameter optimizations ensure that while multiple channels are used to stabilize flow and reduce mutual interference, the collective effect of the channels generates sufficient and clear differential pressure signals for accurate measurement.
Solution Approach 2:
The patent designs the porous channel system to dynamically balance flow stabilization and signal generation. The channels are configured to work cooperatively, where the flow conditioning effect stabilizes the flow regime while the pressure differential across the channels generates measurable signals. The dynamic interaction between multiple channels achieves both flow stability and signal clarity simultaneously.
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 throttling component rapidly stabilizes fluid flow, eliminates the need for lengthy straight pipes, and improves the accuracy and reliability of flowrate measurements by producing a high signal-to-noise ratio differential pressure signal.
Implementation Method 1
the fluid beam in the pipeline will generate local contraction or flow separation when passing through the throttling element, and the static pressure will be reduced at the position of contraction or separation
Implementation Method 2
certain pressure difference (in other words, differential pressure) can be generated before and after the throttling element
Implementation Method 3
forming annular fluid channels that accelerate fluid velocity and standardize flow velocity distribution
Data Source
AI summary
A throttling component and a conditioning and flowrate measurement device including a throttling component. The throttling component comprises a central throttling element and multiple peripheral throttling elements. The multiple peripheral throttling elements are sequentially sleeved on the exterior of the central throttling element, and are coaxial to the central throttling element; annular fluid channels are respectively formed between the central throttling element and its adjacent peripheral throttling element, and between adjacent peripheral throttling elements. A sensitive and clear differential pressure signal is generated while the throttling component stabilizes the flow, so that the accuracy and reliability of flowrate measurement can be improved.