Cylindrical Control Valve Gate for Simpler Assembly and Minimum Flow
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Solution Overview
Problem
Conventional control valves with spherical valve gates require complex assembly and manufacturing due to the need for disassembly of the valve body, leading to increased complexity and inconvenience.
Innovation Solution
A control valve design featuring a cylindrical valve gate with a lower flow rate limit greater than zero, allowing for direct installation and simplifying the manufacturing and assembly process by eliminating the need for a single-piece valve body disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spherical valve gate is used to ensure low leakage, then sealing performance is improved, but the valve body must be disassembled into multiple pieces for installation, increasing device complexity and manufacturing difficulty
Solution Approach 1:
The patent applies spherical geometry to the valve gate surface to achieve low leakage and good sealing performance. The spherical valve gate conforms to the spherical valve seat, ensuring reliable sealing while maintaining a simple single-piece valve body structure through proper design of the installation opening.
2Reliability
If a spherical valve gate is used to ensure low leakage, then sealing performance is improved, but manufacturing and assembly processes become more inconvenient
Solution Approach 1:
The spherical valve gate design achieves low leakage through conformal contact with the spherical valve seat. The patent resolves manufacturing and assembly inconveniences by designing an appropriate installation opening in the valve body that accommodates the spherical gate without requiring complex multi-piece construction.
3Ease of manufacture
If the valve gate is made cylindrical to simplify installation, then ease of manufacture is improved, but the lower flow rate limit becomes zero, reducing cooling effectiveness
Solution Approach 1:
The patent uses a spherical valve gate geometry that provides both good sealing characteristics and a non-zero lower flow rate limit. This spherical design maintains cooling effectiveness by preventing complete flow closure while still achieving low leakage through proper sealing surface contact.
Data Source
AI summary
A control valve includes a valve body and a valve gate, the valve body has an inner space, first fluid inlets, second fluid inlets, and a fluid outlet, the valve gate is movably located inside the inner space, the first fluid inlets are located at a side of the fluid outlet, the second fluid inlets are located at another side of the fluid outlet, the first fluid inlets and the second fluid inlets are arranged along a radial direction of the valve gate, the valve gate has a main channel having a first inlet end, a second inlet end, and an outlet end, the first inlet end is connected to the first fluid inlets, the second inlet end is connected to the second fluid inlets, and the outlet end is connected to the fluid outlet.