Valve Plugs With Curved Notches for Sonic Flow
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Solution Overview
Problem
Current valve plugs lack structures to facilitate choked fluid flow and supersonic flow rates, failing to distribute fluid effectively around the valve plug and guide it smoothly into the outlet port.
Innovation Solution
The valve plug design includes a curved notch formed inwardly from its periphery toward the longitudinal axis, creating an enlarged cavity that improves fluid distribution and flow rate, allowing for sonic fluid flow and enhanced choking performance by guiding fluid smoothly into the outlet port.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional valve plugs are used, then the valve structure is simple, but the fluid flow cannot achieve sonic speed and choked flow performance is insufficient
Solution Approach 1:
The valve plug incorporates curved notches with specific radii of curvature (e.g., R1, R2, R3) instead of sharp corners. These curved transitions guide the fluid flow smoothly around the plug, reducing turbulence and enabling the fluid to reach sonic speeds at the throat while maintaining choked flow performance.
Solution Approach 2:
The valve plug is divided into multiple sections (first section, second section, third section) with different geometric features. Each section serves a specific function: the first section defines the inlet, the second section contains the curved notches for flow distribution, and the third section defines the outlet. This segmentation allows optimization of fluid flow at different stages.
2Quantity of substance
If conventional valve plugs are used, then the manufacturing process is simple, but the fluid distribution around the valve plug is inadequate
Solution Approach 1:
The curved notches with defined radii (R1, R2, R3) create enlarged cavities that distribute fluid evenly around the valve plug. The curvature ensures smooth flow transitions and prevents dead zones, improving fluid distribution while remaining manufacturable through standard machining or molding processes.
Solution Approach 2:
Different sections of the valve plug have different geometric properties tailored to local flow requirements. The curved notches are positioned specifically in the second section where flow distribution is critical, while other sections maintain simpler geometries. This localized optimization improves fluid distribution without unnecessarily complicating the entire plug design.
3Object-affected harmful factors
If conventional valve plugs are used, then the structure is straightforward, but turbulence and stress on fluid flow are excessive
Solution Approach 1:
The curved notches with specific radii (R1, R2, R3) eliminate sharp corners that would cause flow separation and turbulence. The smooth curved surfaces guide the fluid flow continuously around the valve plug, significantly reducing turbulence and stress on the fluid while maintaining effective choked flow performance.
Solution Approach 2:
Instead of having the fluid flow directly against sharp edges of a conventional plug, the design inverts the approach by creating enlarged cavities through curved notches. This reverses the flow pattern, allowing fluid to be smoothly guided into the outlet port rather than being forced against sharp transitions, thereby reducing harmful turbulence and stress.
Data Source
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AI summary
Valve plugs having curved notches are described herein. An example valve plug includes a first section defining a first end, a second section defining a second end opposite the first end, and a third section located between the first and second sections, the third section including a curved notch formed inwardly from a periphery of the third section toward a longitudinal axis of the valve plug defined by the first, second and third sections.