Valve Damping Head Channel Design for Pulsation Reduction
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Solution Overview
Problem
Existing valves, such as pressure relief valves, suffer from pressure pulsations that cause undesirable vibrations and noise, and existing solutions are often complex and add unnecessary mass without effectively reducing pulsations.
Innovation Solution
A valve design featuring a damping head with a damping channel and circumferential grooves that communicates fluid between the inlet and damping chambers, reducing pressure pulsations while maintaining the valve's hysteresis, incorporating a biasing mechanism like a coil spring for adjusting the valve's pressure setting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If existing damping systems are added to valves, then pressure pulsations are reduced, but the system becomes complex and mass increases
Solution Approach 1:
The damping function is merged with the valve body by forming the damping chamber and damping channels directly within the valve housing structure. This integration eliminates the need for separate damping components while achieving effective pressure pulsation reduction, thereby resolving the contradiction between damping performance and system complexity
Solution Approach 2:
The valve housing is designed to serve multiple functions: it acts as both the structural enclosure and as a damping device. The damping chamber and channels are formed as integral features of the housing, allowing the same component to perform both containment and pulsation reduction functions, thus avoiding additional mass and complexity
2Object-affected harmful factors
If existing damping systems are added to valves, then pressure pulsations are reduced, but mass increases
Solution Approach 1:
The damping functionality is combined with the existing valve housing structure rather than adding separate damping components. The damping chamber and channels are formed as integral features of the housing, which eliminates the need for additional mass while achieving effective pressure pulsation reduction
3Object-affected harmful factors
If damping channels are added to the valve element, then pressure pulsations are reduced, but the valve structure becomes more complex
Solution Approach 1:
The damping function is achieved through segmented damping channels that are formed on the outer surface of the damping head rather than requiring complex internal passages. This segmentation approach simplifies the overall structure while effectively reducing pressure pulsations through the distributed channel configuration
Solution Approach 2:
The damping channels are formed as integral features of the damping head structure rather than being separate components. This merging of the damping function into the existing valve element geometry achieves pulsation reduction without adding structural complexity or requiring additional assembly steps
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 valve effectively dampens pressure pulsations, reducing noise and maintaining the valve's hysteresis, making it suitable for integration into existing fluid systems without adding significant mass or complexity.
Implementation Method 1
The damping channel is configured to reduce pressure pulsations in the working fluid
Implementation Method 2
The valve further comprises a biasing means for biasing the flow restricting head against the valve seat when fluid in the inlet chamber is below a predetermined pressure
Data Source
AI summary
A pressure relief valve includes a valve element having, at one end, a flow restricting head and, at an opposed end, a damping head. The damping head includes a damping channel formed therein to allow fluid flow between an inlet chamber and a damping chamber of the valve.