Cyclone Guide Vanes for Separation Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cyclone separators face challenges in achieving high separation efficiency without significant pressure drop increases, particularly in designs with axial inlet configurations where tangential feed components are absent.
Innovation Solution
The cyclone incorporates shrouded guide vanes with a geometrical form featuring at least three edges, where one edge is fixed and the other two are not, with a distance ratio greater than 1.25, allowing particles to be directed towards the outer cyclone walls and reducing attraction to the inner vortex, enhancing separation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the inlet velocity is increased to improve separation efficiency, then the separation efficiency is improved, but the pressure drop increases
Solution Approach 1:
The patent changes the geometric parameters of guide vanes, specifically setting the outer chord length to be 1.05 to 1.5 times the inner chord length (c2/c1 = 1.05...1.5), which optimizes the flow distribution and reduces pressure drop while maintaining separation efficiency
Solution Approach 2:
The guide vanes are designed with non-uniform chord lengths where the outer chord (c2) is deliberately made longer than the inner chord (c1), creating local geometric variation that optimizes flow guidance and reduces energy loss in specific regions of the cyclone
2Productivity
If the vortex finder diameter is decreased to improve separation efficiency, then the separation efficiency is improved, but the pressure drop increases
Solution Approach 1:
The patent optimizes the vortex finder diameter ratio (d/D) to be between 0.15 and 0.35, which balances separation efficiency and pressure drop by controlling the upward flow velocity and particle escape through the vortex finder
3Productivity
If additional installations are added to redirect incoming flow to improve separation efficiency, then the separation efficiency is improved, but the device complexity increases
Solution Approach 1:
The guide vanes are positioned upstream to preliminarily redirect the incoming flow before it enters the main separation zone, creating favorable flow conditions in advance and reducing the need for additional flow control devices
Solution Approach 2:
The guide vanes serve multiple functions: they redirect incoming flow, generate swirl, and optimize flow distribution, thereby achieving improved separation efficiency without requiring separate dedicated components for each 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
This design improves separation efficiency by directing particles towards the cyclone walls, reducing pressure drop and optimizing radial and circumferential velocities, particularly beneficial for axial cyclones and tangential cyclones alike.
Implementation Method 1
The fluid together with the solids or liquids contained therein is fed from the fluid source via the feed channel into the housing of the cyclone. In the interior of the cyclone the main portion of the volume stream of the fluid (about 90 %) is forced as a main stream onto a helical path, so that due to the centrifugal force the particles to be separated are thrown towards the wall of the housing.
Implementation Method 2
As the liquid flow in a helical pattern, beginning at the top (wide end) of the cyclone and ending at the bottom (narrow) end is the essential part of the separation efficiency
Data Source
Figure 1a~1c
Figure 2~3
AI summary
The invention relates to a cyclone for the separation of solid particles and/or at least one liquid from a fluid, featuring a housing (2, 3), an inlet opening (6) for introducing the fluid together with the solid particles and/or the at least one liquid into the housing (2, 3), a discharge port (4) for the solid particles and/or the at least one liquid, a dip tube (12) for discharging the fluid from the housing (2,3), and at least two guide vanes (10a, 10b). Each guiding vanes (10a, 10b) shows a geometrical form with at least three edges e1, e2, e3. Further, each guide vane (10a, 10b) is directly or indirectly fixed to the housing (2, 3) with at least one edge e3 at a fixing point, whereby an area a is defined as the cross-sectional area of the housing (2, 3) intersecting the fixed edges e3. In addition, each guide vane (10a, 10b) shows at least two edges e1 and e2 which are not fixed to the housing (2, 3), whereby the first edge e1 has a distance d1 and the second edge e2 has a distance d2, and whereby d1 < d2 to the centerline c of the housing (2, 3). According to the invention, the first edge e1 shows a distance 11 to the area a and the second edge e2 shows a distance 12, whereby 12 > 1,25*11.