Control Valve Cone Member With Fluid Channel for Higher Flow
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Solution Overview
Problem
V-port valve members have a lower flow rate compared to parabolic valve members, and enlarging their recesses to improve flow is limited by the need to maintain guiding properties and stability, with vortex formation between the valve member and seat further reducing flow.
Innovation Solution
Incorporating a fluid channel within the cone piece of the valve member that extends from the end face to the side surface, which influences the opening cross-section of the throttle point and is designed to prevent or reduce vortex formation, allowing for an increased flow rate while maintaining guiding capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the recesses of the V-port valve element are enlarged to improve flow rate, then the flow rate increases, but the guiding properties and stability of the valve element are compromised
Solution Approach 1:
The valve element is segmented into multiple functional regions: the conical basic shape provides guiding properties through guide surfaces, while separate recesses are strategically positioned to optimize flow without compromising the guiding function. The guide surfaces are kept distinct from the recess areas, allowing independent optimization of both guiding and flow characteristics.
Solution Approach 2:
Different regions of the valve element are assigned different functional qualities: the conical portion with guide surfaces provides stable guidance, while specific recesses are created in non-critical areas to enhance flow rate. The recesses are positioned to influence the opening cross-section without interfering with the guiding surfaces, achieving local optimization of flow while maintaining overall stability.
2Productivity
If the recesses are enlarged further to increase flow rate, then flow rate improves, but vortex formation increases which further reduces flow rate
Solution Approach 1:
The recesses are strategically designed to convert potentially harmful vortex formation into beneficial flow optimization. By positioning recesses in specific locations on the conical surface, the design guides the fluid flow in a controlled manner that prevents chaotic vortex formation while maximizing the opening cross-section. The recesses act as flow directors rather than mere enlargements.
Solution Approach 2:
The conical basic shape with its smooth curved surfaces and optimized recess geometries promotes laminar flow patterns. The curved transitions and rounded edges of the recesses prevent sharp flow separation that would generate vortices, while still providing sufficient opening cross-section for high flow rate.
3Productivity
If the recesses are enlarged to improve flow rate, then flow rate increases, but the robustness of the valve element is reduced
Solution Approach 1:
The valve element structure is segmented into load-bearing conical regions and flow-optimized recess regions. The main conical body with its inherent structural strength provides robustness, while recesses are created in controlled locations that do not compromise the overall structural integrity. The guide surfaces and web structures maintain mechanical strength while allowing flow optimization.
Solution Approach 2:
Material removal for recesses is concentrated in specific non-critical zones that do not affect the overall structural robustness. The recesses are positioned to optimize flow while the remaining conical structure, particularly the guide surfaces and web regions, maintains sufficient thickness and strength to ensure valve element robustness and resistance to mechanical loads.
Data Source
Figure 1
Figure 2~3
Figure 4a~4b
AI summary
The invention relates to a valve element (10) for a control valve (12) of a process plant, comprising a conical section (14) forming a sealing edge (16) designed to interact with a valve seat (26) of the control valve (12), and comprising at least one end face (14b) which in particular at least partially limits the conical section (14) on one side, wherein the conical section (14) serves to change the opening cross-section of at least one throttling point (34) of the control valve (12) depending on an axial position of the valve element (10), wherein the conical section (14) forms at least one recess (18) in and/or on a circumferential surface formed relative to a central axis (40) of the conical section (14), which in particular is designed to influence the opening cross-section of the throttling point (34) depending on the axial position of the valve element (10) relative to the valve seat (26).wherein the recess (18) is at least partially bounded by a recess surface (18b). The invention is characterized in that at least one fluid channel (20) is formed which is bounded by the conical piece (14) and extends from the end face (14b) through the conical piece (14) to a side surface (14a) of the conical piece (14), wherein the side surface (14a) is arranged in front of the sealing edge (16) when viewed along the central axis of the conical piece (14).