Oil-Damped Relief Valve Disc Holder for Stable Seating
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Solution Overview
Problem
Conventional pressure relief valves experience instability and vibrations during the release of excessive pressure, leading to improper seating of the valve disc and potential leakage, which is particularly problematic in high-pressure industrial applications.
Innovation Solution
The design incorporates a disc holder filled with oil, which surrounds the valve disc and is connected to the valve stem, providing damping to absorb vibrations and ensure proper seating of the valve disc on the nozzle after pressure release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the valve disc is allowed to pop open freely to release excessive pressure, then the pressure relief function is achieved, but vibrations and mechanical waves are generated causing instability and improper seating
Solution Approach 1:
The patent introduces a damping chamber filled with viscous fluid (oil) that acts as a cushioning medium before the valve disc impacts the seat. This beforehand cushioning absorbs the shock and dampens vibrations during the pressure relief process, preventing the mechanical waves that would otherwise cause improper seating and instability.
Solution Approach 2:
The damping chamber filled with viscous fluid serves as an intermediary element between the valve disc and the valve seat. This mediator absorbs and dissipates the energy from the valve disc's movement, reducing vibrations and mechanical waves while allowing the pressure relief function to occur, thereby improving both reliability and seating stability.
2Device complexity
If conventional pressure relief valve design is used, then the structure is simple, but vibrations cause valve disc displacement and leakage
Solution Approach 1:
The damping chamber is nested within the existing valve body structure, with the viscous fluid contained within the chamber that is integrated into the valve's internal geometry. This nesting approach adds the vibration damping function without requiring a completely separate external system, thus limiting the increase in device complexity while improving seating accuracy and reliability.
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
This solution effectively reduces mechanical waves and vibrations, preventing displacement of the valve disc and ensuring proper closure, thereby minimizing pressure leakage and enhancing the stability and reliability of pressure relief in high-pressure systems.
Implementation Method 1
the disc holder is filled with oil... providing damping to absorb vibrations
Implementation Method 2
a disc holder which is filled with oil... effectively reduces mechanical waves and vibrations
Data Source
AI summary
A relief valve device having a spring, a valve bonnet, a valve stem, a disc holder, a valve disc, a huddling chamber, a blowdown ring, and a nozzle. In the valve device, the valve disc is positioned above the nozzle; the spring is disposed in the valve bonnet; the spring surrounds the valve stem such that a longitudinal axis of the spring and a longitudinal axis of the valve stem are coaxial; the disc holder surrounds an outer periphery of the valve disc and is adjacent and in direct contact with a surface of the valve disc around an entire perimeter of the valve disc; the blowdown ring is disposed at a top section of the nozzle; a bottom section of the nozzle is connected to a bottom surface of a valve body and the top section of the nozzle is connected to the valve disc; and the disc holder is filled with oil.