Adjustable Diffuser Gas Valve for Stable Pressure and Low Noise
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Solution Overview
Problem
Existing gas control valves face challenges in optimizing pressure control properties and flow capacities, particularly at small opening cross sections and increasing volume flows, while also experiencing noise issues due to periodic pressure fluctuations.
Innovation Solution
A gas flow control valve design featuring an adjustable diffuser with a variable cross-sectional behavior, utilizing non-linear curves and a bypass geometry to create a homogeneous flow and increase capacity, while preventing noise and maintaining control behavior across varying pressures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a small opening cross-section is used in the gas control valve, then the pressure control precision is improved, but the flow capacity decreases and noise increases due to periodic pressure fluctuations
Solution Approach 1:
The patent applies the dynamics principle by making the diffuser geometry adjustable rather than fixed. The diffuser can change its cross-sectional area ratio dynamically to adapt to different operating conditions, allowing the valve to maintain optimal pressure control precision while preserving flow capacity across varying flow rates
Solution Approach 2:
The patent changes the geometric parameters of the diffuser, specifically the cross-sectional area ratio, to optimize both pressure control and flow capacity. By adjusting this parameter, the valve can achieve precise pressure control with small opening cross-sections while avoiding the flow capacity loss and noise generation that would otherwise occur
2Measurement precision
If a small opening cross-section is used in the gas control valve, then the pressure control precision is improved, but noise increases due to periodic pressure fluctuations
Solution Approach 1:
The adjustable diffuser geometry allows the valve to dynamically adapt to different operating conditions, preventing the periodic pressure fluctuations that cause noise. By optimizing the cross-sectional area ratio in real-time, the system maintains smooth flow transitions even with small opening cross-sections
Solution Approach 2:
The patent modifies the diffuser's geometric parameters, particularly the cross-sectional area ratio, to eliminate the conditions that lead to periodic pressure fluctuations and noise generation. This parameter optimization allows precise pressure control without the harmful noise side effect
3Measurement precision
If the valve is completely closed to stop gas flow, then the flow control precision is improved, but a defined flow rate is required for applications like leak tests and flushing
Solution Approach 1:
The adjustable diffuser enables the valve to provide precisely controlled defined flow rates at partially closed positions. The dynamic adjustment of the diffuser geometry allows the valve to maintain stable, reproducible flow rates for leak testing and flushing applications without requiring complete closure
Solution Approach 2:
The patent optimizes the diffuser's cross-sectional area ratio to enable precise flow rate definition at specific valve positions. This parameter control allows the valve to deliver exact flow rates needed for leak tests and flushing operations while maintaining the ability to achieve complete closure when required
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 design achieves more homogeneous flow and increased capacity, reduces noise, and ensures pressure-independent control, enhancing the overall performance of the gas flow control valve.
Implementation Method 1
A diffuser, in the sense of the invention, is a component whose geometry increases the flow cross-section along the direction of flow for a given gas flow. This change in cross-section creates a negative pressure behind the diffuser, which acts on moving components.
Implementation Method 2
The valve body is arranged in the valve seat so as to be movable in a first direction of movement to form an adjustable cross-section of a passage opening for the gas passage
Data Source
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AI summary
Gas flow control valve, wherein the gas flow control valve comprises a housing 11 with a gas inlet 10, a valve seat 6 arranged in the housing 11, a valve body 5 associated with the valve seat 6, wherein the valve body 5 is held by an upper spring and a lower spring and is centered by means of a diaphragm 26, and a gas outlet 12 provided in the housing 11 downstream of the valve body 5, wherein the valve body 5 is movably arranged in the valve seat 6 to form an adjustable cross-section of a passage opening 25 for gas passage in a first direction of movement 17, wherein the gas flow control valve 3 comprises an adjustable diffuser 13.