Liquid Oxygen Vent Silencer Geometry for Noise and Pressure Waves
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Solution Overview
Problem
Existing gas diffusing towers in gas stations generate high acoustic energy and strong pressure waves due to high-pressure gas discharge, leading to damage of sound-absorbing materials and reduced lifespan, especially when discharging low-pressure gas at high flow rates.
Innovation Solution
A liquid oxygen vent silencer using copper and stainless steel components with a specific pipe configuration and soundproofing material, along with a control unit to manage gas flow and temperature, reduces noise and vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a silencer with built-in sound-absorbing material is installed to reduce noise, then noise reduction is achieved, but the sound-absorbing material is damaged by high-temperature and high-pressure discharge gas and scattered, shortening the silencer lifespan
Solution Approach 1:
The patent removes the vulnerable sound-absorbing material from the silencer structure and replaces it with a passive geometric noise reduction design using rounded edges and curved surfaces. This extraction eliminates the material that was being damaged by high-temperature and high-pressure gas, thereby resolving the contradiction between noise reduction and silencer lifespan.
Solution Approach 2:
The patent replaces the expensive and fragile sound-absorbing material with a simple, durable geometric structure made of metal. This structure, while simpler, is much more resistant to the harsh operating conditions and does not require frequent replacement, effectively treating the previous material as a disposable component that needed regular maintenance.
2Stress or pressure
If high-pressure gas is discharged at high speed to relieve pressure, then pressure relief is achieved, but high acoustic energy and strong pulse-type pressure waves are generated
Solution Approach 1:
The patent applies curvature to the gas discharge path by rounding all edges and using curved surfaces instead of sharp angles. This spherical/curved geometry smoothly guides the high-pressure gas flow, reducing turbulence and the generation of acoustic energy and pressure waves while maintaining effective pressure relief.
Solution Approach 2:
The patent changes the geometric parameters of the discharge path, specifically using rounded edges with specific radius values and curved surfaces with controlled radii. These parameter changes transform the gas flow characteristics, reducing the formation of shock waves and acoustic energy while maintaining the pressure relief function.
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 silencer effectively minimizes noise to 50 db or less and prevents explosive collisions, ensuring safe and comfortable gas discharge by absorbing vibrations and shocks, while extending the lifespan of the silencer.
Implementation Method 1
receives low-temperature liquid gas and moves an internal space up and down to reduce noise
Implementation Method 2
supports the silencer body by raising or lowering the silencer body from a ground
Implementation Method 3
deliver the cryogenic liquid gas to the internal space of the first pipe
Data Source
AI summary
The present disclosure relates to a liquid oxygen vent silencer implemented so as to eliminate potentially explosive elements, and the liquid oxygen vent silencer is manufactured using copper plates and stainless (SUS) having no risk of explosions to minimize an edge that collide with oxygen gas, and includes a silencer body that receives cryogenic liquid gas and moves an internal space up and down to reduce noise; and a raising/lowering support portion that is installed along an outside of the silencer body and supports the silencer body by raising or lowering the silencer body from a ground.