Reflector Stabilizing Flow Profile for Measurement Accuracy
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Solution Overview
Problem
Accurate fluid flow measurement in pipelines is hindered by the distortion of fluid flow profiles due to elbows, tees, and other piping features, leading to asymmetric and unstable flow configurations that complicate consistent and repeatable measurement.
Innovation Solution
A reflector system comprising an orifice plate and disks within the pipeline, oriented perpendicular to the pipe axis, which deflects noise, pulsation, and dynamic behavior, minimizing errors in downstream flow meters by stabilizing the flow profile without requiring extensive piping modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If long lengths of straight pipe are used to achieve stable flow profile, then measurement accuracy is improved, but installation cost and space requirements increase
Solution Approach 1:
The flow conditioner divides the flow adjustment function into multiple discrete elements (blades or vanes) arranged radially within the pipe. These segmented elements can independently redirect flow streams to collectively achieve flow profile stabilization without requiring long straight pipe sections
Solution Approach 2:
The flow conditioner acts as an intermediary device installed between the disturbed flow source (elbows, tees) and the flow meter. It mediates the flow transition by actively redistributing flow patterns, allowing accurate measurement to be achieved without the traditional intermediary of long straight pipe runs
2Reliability
If flow conditioners or straight pipe sections are added to stabilize flow, then measurement consistency is improved, but piping modification requirements increase
Solution Approach 1:
The flow conditioner is designed as a universal device that can be installed in existing pipe runs without requiring specific pipe configurations or modifications. The same basic design can handle various upstream disturbances (elbows, tees, valves) and work with different pipe sizes and flow rates
Solution Approach 2:
The flow conditioner elements (blades/vanes) are nested within the existing pipe interior. The device fits inside the pipe without requiring external support structures or pipe section replacements, allowing installation within the existing piping infrastructure
3Adaptability or versatility
If upstream piping features like elbows and tees are used for routing, then system flexibility is improved, but flow profile distortion increases
Solution Approach 1:
The flow conditioner applies preliminary corrective action to the distorted flow pattern before it reaches the flow meter. By actively redistributing the flow streams upstream of the measurement point, it counteracts the adverse effects of elbows, tees, and other routing features
Solution Approach 2:
The device takes the distorted, non-uniform flow patterns created by upstream piping features and converts them into beneficial uniform flow patterns suitable for accurate measurement. The harmful flow distortion is transformed into the desired flow profile through active redistribution
Data Source
AI summary
A reflector for a fluid flow system includes an orifice plate comprising a flange and an opening; at least one disk; and at least one vane extending between the orifice plate and the at least one disk.