Convex 8-Shaped Venturi Element for High Differential Pressure
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Solution Overview
Problem
Existing venturi elements in pharmaceutical and process industries fail to generate sufficient differential pressure for turbulent flow in by-passes, leading to contamination risks and increased costs due to limited cross-section reduction and complex manufacturing processes.
Innovation Solution
A venturi element with a convex, 8-shaped cross-section reduction achieved through metal deformation, allowing for a larger cross-section reduction without affecting the by-pass return branch connection, resulting in higher differential pressures and fluid flow rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If the cross-section of the venturi element is reduced to generate higher differential pressure, then the fluid flow rate and turbulent flow are improved, but the connection area for the by-pass return branch is reduced
Solution Approach 1:
The patent transitions from a two-dimensional cross-sectional reduction to a three-dimensional convex shape reduction. The convex shape creates a more pronounced Venturi effect by reducing the cross-sectional area more effectively while maintaining sufficient connection area through the spatial configuration of the convex geometry, thus generating higher differential pressure without completely compromising the connection area.
Solution Approach 2:
The patent changes the geometric parameters of the venturi element by introducing a convex shape with specific curvature and projection dimensions. This parameter change allows for greater cross-sectional reduction (improving differential pressure) while the convex geometry distributes the reduction in a way that preserves adequate connection area for the by-pass return branch.
2Stress or pressure
If a larger cross-section reduction is achieved to increase differential pressure, then the fluid flow rate increases, but the manufacturing complexity increases
Solution Approach 1:
The patent achieves larger cross-section reduction through controlled plastic deformation parameters. By optimizing the deformation force, duration, and tooling geometry, the patent creates a convex shape that provides significant cross-sectional reduction while maintaining manufacturability through standard metal forming processes.
Solution Approach 2:
The patent replaces complex multi-step machining or assembly processes with a single plastic deformation operation. The convex shape is created through controlled plastic deformation of the pipe material, which simplifies the manufacturing process compared to traditional methods that would require multiple machining steps or assembly of multiple components.
3Stress or pressure
If the by-pass length is increased to reduce pressure loss, then the system complexity increases, but the differential pressure requirement decreases
Solution Approach 1:
The patent changes the key parameter of differential pressure generation by introducing a convex shape with optimized projection distance and curvature. This parameter change increases the differential pressure to such an extent that shorter by-pass lengths become sufficient, thereby reducing system complexity while maintaining adequate pressure compensation.
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 solution generates significantly higher differential pressures and fluid flow rates, enabling longer by-pass installations and simplifying system design, while maintaining cost-effectiveness and ease of manufacturing.
Implementation Method 1
Venturi elements are based on Venturi effect, which is basically a decrease of the pressure of liquid, when it runs through a restricted part of a pipe. In fluid dynamics the flow rate of an incompressible fluid increases through a restricted part of a pipe according to the law of mass conservation, while the static pressure drops in accordance with the law of conservation of mechanical energy.
Implementation Method 2
The pipe is placed into a device for plastic deformation with two deformation punches, wherein at least one of the punches is movable, so that a reduction of the cross-section is achieved until the convex shape of the interior is obtained
Data Source
Figure 1~3b
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AI summary
The invention belongs to the field of installations for supply and distribution of liquids, as well as to the field of venturi pipes for use in distribution of clean media. The object of the invention is an improved venturi element (1) for use in pharmacy and processing industry, which enables higher differential pressures in distribution systems for clean liquids and consequently turbulent flow, which prevents contamination of liquids. The improved venturi element (1) according to the invention solves the problem of ensuring larger pressure difference with a special shape of the restriction, namely with a convex shape of the restriction interior, preferably in the shape of the number 8, which in comparison to known solutions causes a much larger differential pressure. The most significant advantage of the shape according to the invention is in that a large reduction of the cross-section is achieved, while the area of return branch collar or connection is minimally deformed. Due to the significantly larger cross-section reduction the pressure difference is larger, while the fluid flow rate is consequently higher.