Centrifugal Separator Disc Spacing via Segmented Protrusions
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Solution Overview
Problem
Centrifugal separators with elongate spacing elements have inactive regions on the surface of separation discs, leading to reduced separation efficiency due to unused surface areas, especially at the radially outer parts of the interspaces.
Innovation Solution
The use of spot-formed spacing elements, such as raised points or half-spherical protrusions, which are either integral or separate, to create even and open interspaces for gas flow, ensuring that the entire surface of the separation discs is utilized for particle separation, thereby enhancing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elongate spacing elements are used to maintain interspaces between separation discs, then the structural stability is improved, but inactive regions are created on the separation disc surface reducing separation efficiency
Solution Approach 1:
The spacing elements are segmented into multiple discrete spots rather than continuous elongate structures. This segmentation allows gas to flow through multiple small openings while maintaining interspace stability, eliminating the large inactive regions that would exist behind continuous spacing elements.
Solution Approach 2:
The spacing elements create a porous structure with multiple small openings distributed across the separation disc surface. This porous arrangement allows gas permeation through the interspaces while maintaining structural integrity, converting previously inactive surface regions into active separation areas.
2Strength
If elongate spacing elements are used to maintain interspaces, then the mechanical support is improved, but the gas flow freedom is restricted creating inactive regions
Solution Approach 1:
The continuous spacing element is divided into multiple discrete spot-formed elements. This segmentation provides mechanical support at key locations while creating multiple small flow paths, allowing gas to flow freely through the interspaces without encountering large blocked regions.
Solution Approach 2:
The spacing elements have different properties at different locations - spot-formed elements provide localized mechanical support where needed while creating minimal obstruction to gas flow. This local quality optimization ensures both structural stability and gas flow freedom throughout the interspaces.
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 eliminates inactive regions, achieving efficient separation of particulate contaminants from gas by ensuring even spacing and free flow through the interspaces, improving the overall separation efficiency and pumping action of the centrifugal separator.
Implementation Method 1
a rotor which by means of a driving device is rotatable around a rotational axis and which is adapted, during operation, to bring the gas into rotation in the separation chamber
Implementation Method 2
a stack of frustoconical separation discs which are disposed coaxially with one another and concentrically with the rotational axis and which by means of spacing elements are disposed at mutual spacing such that they delimit between them interspaces for gas to flow through
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a centrifugal separator for cleaning of gas from solid or liquid particles suspended therein which are of greater density than the gas. The centrifugal separator comprises a rotor housing (1) which delimits a separation chamber (2) and which has a gas inlet (3) to the separation chamber (2) and a gas outlet (4) from the separation chamber (2) and a rotor (8) which is rotatable about an axis of rotation (R). The rotor (8) comprises a stack of conical separation discs (22) which via spacing elements (26, 30) between them delimit interspaces (27) for gas to flow through. The interspaces (27) between the separation discs (22) are, at least at their radially outer part, open for flow of the gas in the circumferential direction.