Float Chamber Air Valve Deflector for Low-Turbulence Flow
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Solution Overview
Problem
Air valves in liquid pipelines suffer from energy losses and reduced efficiency due to stagnation zones and turbulence, which can lead to decreased flow rates and pipeline issues like corrosion and pressure surges, especially when sizing is incorrect and foreign matter ingress occurs.
Innovation Solution
The introduction of an air guide insert or external air guide, configured to smooth airflow through the float chamber and top opening, using elements like center and annular elements with deflector surfaces and support arrangements, and an external air guide with a tapered flow path to optimize airflow and reduce turbulence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a traditional air valve structure with top and bottom orifices of the same diameter is used, then the valve body is simple to manufacture, but energy losses occur due to stagnation zones and turbulence in the float chamber
Solution Approach 1:
The float chamber is segmented into multiple zones using a baffle plate that divides the chamber into a first float chamber and a second float chamber. This segmentation prevents stagnation zones and turbulence by directing airflow through defined paths, reducing energy losses while maintaining a relatively simple overall valve structure.
Solution Approach 2:
Different regions of the float chamber are given different functional qualities through the baffle plate configuration. The first float chamber receives air through the top orifice, while the second float chamber receives air through the bottom orifice, creating localized flow patterns that eliminate stagnation and reduce turbulence-related energy losses.
2Productivity
If the top and bottom orifices are the same size, then manufacturing is simplified, but the effective flow rate is reduced due to differential flow paths through the annulus space
Solution Approach 1:
The airflow path is segmented into two independent channels: one through the top orifice into the first float chamber, and another through the bottom orifice into the second float chamber. This segmentation allows both orifices to maintain the same manufacturing specifications while achieving higher effective flow rates through parallel flow paths rather than sequential paths through a single orifice.
3Reliability
If a sieve or grid is positioned over the top opening to prevent foreign matter ingress, then the valve is protected from damage, but airflow resistance increases and efficiency decreases
Solution Approach 1:
The protection function is segmented from the main airflow path. The baffle plate creates a separate entrance region for air into the first float chamber that bypasses the sieve/grid location, allowing the sieve to remain for protection purposes while reducing its impact on overall airflow resistance through the valve system.
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 solution reduces energy losses and enhances the efficiency of air flow through the valve, ensuring correct sizing and preventing pipeline issues by minimizing stagnation and turbulence, thus improving the overall performance of air valves.
Implementation Method 1
stagnation zones and turbulence, which can lead to decreased flow rates
Implementation Method 2
buoyancy forces acting on the float arrangement displace the float arrangement upwardly
Implementation Method 3
buoyancy forces acting on the float arrangement displace the float arrangement upwardly until it reaches an upper or closed condition
Implementation Method 4
the pressure in the float chamber will decrease to atmospheric pressure resulting in the float arrangement moving downwardly
Data Source
AI summary
This invention relates to an air valve which includes a deflector positioned inside a float chamber in order to improve the flow of air through the air valve. Further, the air valve includes an upper opening leading from the float chamber and having a transverse cross-section which increases away from the float chamber in order to smooth air flow. The invention further relates to an air valve accessory whereby an air valve can be modified in order to improve air flow therethrough.