Dual-Zone Coriolis Flowmeter for Online Accuracy Verification
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Solution Overview
Problem
Existing Coriolis flowmeters lack a mechanism to verify accuracy without interrupting production, necessitating regular calibration that increases usage costs and causes production interruptions.
Innovation Solution
A Coriolis flowmeter with multiple measurement zones, where each zone measures mass flow and density using the Coriolis principle, allowing on-line verification of measurement results by comparing values from two zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If regular calibration is performed to ensure accuracy, then measurement accuracy is maintained, but production interruption and usage cost increase
Solution Approach 1:
The flow tube is divided into multiple measurement zones (first measurement zone and second measurement zone), each capable of independent measurement. This segmentation allows one zone to perform calibration while the other continues measurement, eliminating production interruption.
Solution Approach 2:
The flowmeter performs self-verification by comparing measurements from multiple zones. The system automatically detects accuracy changes through internal comparison without requiring external calibration equipment or interrupting production.
2Reliability
If multiple measurement zones are added to enable on-line verification, then measurement reliability is improved, but device complexity increases
Solution Approach 1:
Multiple measurement zones are integrated into a single flow tube structure, combining multiple measurement functions within one continuous component. This merging approach increases reliability while minimizing the increase in overall device complexity.
Solution Approach 2:
Each measurement zone is equipped with both driving devices and detection devices, enabling all zones to perform full measurement functions. This multi-functionality allows any zone to verify accuracy using the same measurement capabilities, simplifying the verification mechanism.
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
Enables high-precision real-time diagnosis without production interruptions, reducing uncertainty and allowing simultaneous measurement of mass flow, density, and viscosity, thereby enhancing accuracy and reducing the need for periodic calibration.
Implementation Method 1
The Coriolis flowmeter is a mass flow measuring device based on Coriolis principle
Implementation Method 2
The detection devices detect the tiny vibration and transmit vibration information to the flow transmitter
Data Source
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AI summary
Disclosed is a Coriolis flowmeter comprising a plurality of measurement areas. The Coriolis flowmeter comprises a flow tube and a flow transmitter. The flow tube comprises at least a first measurement area and a second measurement area. A first driving device and a first measurement device are mounted in the first measurement area, and a second driving device and a second measurement device are mounted in the second measurement area. The first measurement device and the second measurement device are both connected to the flow transmitter so as to transmit measurement values of the first measurement device and the second measurement device to the flow transmitter. The first measurement area uses the Coriolis principle to measure at least one of the mass flow and the density of an internal medium, and the second measurement area and the first measurement area both measure the mass flow and/or the density of the internal medium. Compared with the prior art, in the present invention, measurement values of a same parameter of a medium in a flow tube in two measurement areas are compared, so that a measurement result can be verified online, and a high-precision real-time diagnosis method based on sensor design is provided, thereby avoiding production interruption caused by regular calibration of the Coriolis flowmeter.