Coriolis Flowmeter Manifold Channel Area Linear Decrease
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Solution Overview
Problem
Existing Coriolis flowmeters face increased pressure loss and flow separation due to excessive channel sectional area expansion in manifolds, leading to decreased measurement sensitivity and potential clogging.
Innovation Solution
The Coriolis flowmeter design features manifolds with a channel sectional area that linearly decreases from the branching portion to the tube-side opening portions, using non-circular branching shapes and circular tube-side openings to prevent area expansion, maintaining optimal pressure loss and flow continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the channel sectional area is increased at the branching portion of the manifold, then the flow can be divided into two channels, but the pressure loss increases and flow separation occurs
Solution Approach 1:
The patent applies parameter changes by controlling the channel sectional area to not increase from the branching portion toward the tube-side opening portions. The channel sectional area is set to decrease linearly or remain constant, preventing the area expansion that causes pressure loss and flow separation. This parameter control resolves the contradiction by optimizing the geometric parameters of the manifold channel.
2Quantity of substance
If the channel sectional area is increased at the branching portion, then the flow can be divided into two channels, but flow separation and clogging occur
Solution Approach 1:
The patent prevents flow separation and clogging by controlling the channel sectional area parameter to not increase from the branching portion toward the tube-side opening portions. The linear decrease or constant area design ensures smooth flow transition without separation, maintaining flow continuity and reliability.
3Quantity of substance
If the channel sectional area is increased at the branching portion, then the flow can be divided into two channels, but measurement sensitivity decreases
Solution Approach 1:
The patent optimizes measurement sensitivity by controlling the channel sectional area to not increase from the branching portion toward the tube-side opening portions. This parameter control ensures optimal flow conditions in the measurement section, preventing flow separation and pressure loss that would degrade measurement sensitivity.
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 optimizes pressure loss and flow stability, reducing the risk of clogging and enhancing measurement sensitivity by maintaining a consistent channel area, thus improving the overall performance of the Coriolis flowmeter.
Implementation Method 1
a Coriolis force acting on a flow tube is proportional to a mass flow rate when the flow tube through which a fluid to be measured flows is supported at both ends thereof and vibration is applied about a support point in a direction perpendicular to a flow direction of the flow tube
Data Source
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AI summary
Provided is a Coriolis flowmeter capable of achieving suppression of a pressure loss of a manifold and the like. A channel (15) of a manifold (8) includes a pipe-side opening portion (16), tube-side opening portions (17), and a channel branching portion (18) as shaping portions therefor, and the channel sectional area in a range of from the channel branching portion (18) toward the tube-side opening portions (17) is linearly decreased. A branching wall tip end (20) of a branching wall (19) extending from a position of the channel branching portion (18) to the other end of a manifold body (12) is arranged at the channel branching portion (18). The sectional shape of the channel (15) is a circular shape at a position of the pipe-side opening portion (16), and is changed to D-shapes at the position of the channel branching portion (18) by the branching wall tip end (20).