Check Valve Guide Portion Reduces Fluid Momentum
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Solution Overview
Problem
Existing check valves face challenges in achieving high-speed valve closing operations due to the impact of fluid momentum, leading to delayed closure timing and increased size and complexity, especially in low-temperature applications where thermal insulation and reduced flow rate resistance are critical.
Innovation Solution
A check valve design featuring a valve element that changes the fluid flow direction horizontally, reducing the force caused by fluid momentum, and incorporating an auxiliary valve element to minimize water hammer effects, along with a biasing member for enhanced closure efficiency, allowing for a simple configuration that operates effectively in both vertical and horizontal flow directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If spring force is applied to the valve element return direction or the degree of opening is reduced, then valve closure speed is improved, but flow rate coefficient decreases and valve size must be enlarged
Solution Approach 1:
The guide portion preliminarily changes the fluid flow direction to horizontal before it reaches the valve element. This preliminary action reduces the momentum impact on the valve element during closure, allowing faster closure without sacrificing flow rate coefficient or requiring valve enlargement.
2Speed
If spring force is applied to the valve element return direction, then valve closure speed is improved, but device complexity increases due to additional components
Solution Approach 1:
The guide portion utilizes the fluid's own momentum and flow characteristics to achieve horizontal flow redirection and valve element guidance. The system serves itself by using the fluid's kinetic energy to drive the closure action without requiring external springs or complex mechanical return mechanisms.
3Productivity
If the valve element lift distance is increased to reduce flow rate resistance, then flow rate coefficient is improved, but valve closure time is delayed due to greater distance to return
Solution Approach 1:
The guide portion preliminarily redirects the fluid flow to horizontal direction, reducing the momentum force acting on the valve element during closure. This allows the valve element to be lifted to a greater distance for reduced flow resistance while the reduced momentum impact enables faster return closure, resolving the time loss.
4Speed
If a cam or solenoid is used to forcibly close the valve, then valve closure speed is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The guide portion enables the valve system to use the fluid's own flow characteristics and momentum to achieve rapid closure. The fluid flow itself serves the dual function of opening the valve (when flowing upward) and closing it (when redirected horizontally), eliminating the need for external actuators like cams or solenoids.
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 high-speed valve closing with reduced closure time and minimized water hammer impact, enabling efficient low-temperature fluid handling while maintaining a compact and thermally efficient pump configuration.
Implementation Method 1
the force acting on the valve element of the poppet valve is not only associated with the differential pressure between the upstream pressure and the downstream pressure but is also associated with the momentum of the fluid
Implementation Method 2
a valve element configured to be able to come into contact with and separate from the valve seat vertically
Implementation Method 3
incorporating an auxiliary valve element to minimize water hammer effects, along with a biasing member for enhanced closure efficiency
Implementation Method 4
a check valve that opens and closes by causing a valve element to come into contact with and separate from a valve seat and thereby controls a flow of fluid
Data Source
AI summary
A check valve (300) that opens and closes by causing a valve element (130) to come into contact with and separate from a valve seat (104) and thereby controls a flow of fluid that flows in through an inlet (101) and flows out through an outlet (102), having a guide portion (135) that has a fluid guide surface provided at a downside thereof, wherein the valve seat (104) has a first valve seat and a second valve seat, and the valve element (130) has a first valve portion (131) that is to be seated on the first valve seat, a second valve portion (132) that is to be seated on the second valve seat, and a pressure receiving surface (134) that extends between the first valve portion (131) and the second valve portion (132) in such a manner that a distance between the pressure receiving surface (134) and the first valve seat gradually reduces.