Cyclonic Separator Central Body Vibration Damping
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Solution Overview
Problem
Vibrations of the central body in cyclonic fluid separators negatively impact fluid flux and separation performance, potentially leading to device failure.
Innovation Solution
Incorporating resonance abatement means such as a tubular tail section filled with solid particles or viscous liquid, or a porous tail section with radial holes, and using a tension rod with a low-pressure fluid injection to stabilize the central body and reduce vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the central body is streamlined with an elongate tail section to improve fluid flux and separation performance, then separation efficiency is improved, but the central body becomes susceptible to vibrations and potential failure
Solution Approach 1:
The patent converts the harmful vibrations into beneficial damping forces by filling the tail section with viscous liquid or solid particles. The viscous liquid in the annular gap between the tension rod and tail section, or the solid particles within the tail section, transform the vibrational energy into heat through viscous dissipation, thereby stabilizing the central body while maintaining the streamlined shape for efficient separation
2Reliability
If the tail section is made porous with radial holes to reduce pressure differences, then vibration inhibition is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies porous materials by creating radial holes through the tail section to make it substantially porous. This porous structure allows pressure equalization between opposite sides of the tail section, reducing pressure differences that cause vibrations. The holes are distributed along the length and circumference of the tail section, enabling straightforward manufacturing through drilling or forming operations
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 solution effectively dampens vibrations, increasing the natural frequency of the central body and enhancing separation efficiency by maintaining stability and preventing vortex breakdown, thus improving the overall performance of the cyclonic fluid separator.
Implementation Method 1
a tension rod may be arranged in the tubular tail section of the central body, such that an annular gap is present between the outer surface of the tension rod and the inner surface of the tubular tail section of the central body, which annular gap is at least partially filled with a viscous liquid
Implementation Method 2
the central body may comprise a porous tail section, such that pressure differences between opposite sides of the tail section are reduced and vibration of the tail section resulting from any varying pressure differences between said opposite sides of the tail section is inhibited
Implementation Method 3
the central body may comprise a tubular tail section, which is at least partially filled with solid particles and/or a viscous liquid and which may be subject to a predetermined axial tension
Implementation Method 4
Gas mixtures may be separated by expanding and thereby cooling the mixture such that condensable components condense and then separating the gaseous components from the condensed liquid components in a cyclonic separator
Implementation Method 5
swirl imparting means for inducing the fluid to swirl through an annular space between the housing and a central body
Implementation Method 6
Gas mixtures may be separated by expanding and thereby cooling the mixture such that condensable components condense
Data Source
AI summary
A cyclonic fluid separator has a tubular housing (10) in which the fluid is accelerated and swirl imparting means (2) for inducing the fluid to swirl through an annular space between the housing and a central body (1) mounted within the housing (10), which central body (1) is provided with resonance abatement means, such as: tensioning means (20,22) which apply a tension load to an elongate tail section (8) of the central body (1) such that the natural frequency of the central body (1) is increased; vibration dampening means (31,50,60), which inhibit vibration of at least part (8) of the central body (1); solid particles (31) arranged in a segmented tubular tail section (8) of the central body (1), a viscous liquid (50) arranged between a tubular tail section (8) of the central body (1) and a tensioning rod (51), apertures (60) drilled radially through a tail section (8) of the central body (1); and/or a low pressure fluid (80) injected through a central opening (82) in the central body (1).