Centrifugal Separator Casing Sealing Arrangement
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Solution Overview
Problem
Centrifugal separators face high energy consumption due to discharging both heavy and light phases at larger radii from the axis of rotation, which increases operational costs.
Innovation Solution
The design incorporates a shaft part with a flange that separates the discharge areas and a casing with a partition to prevent re-mixing of phases, along with a rotatable outlet housing that adjusts the weir edge level and discharges liquids opposite to the rotation direction, reducing energy loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If both heavy and light phases are discharged at larger radii from the axis of rotation, then the discharge structure is simpler, but the energy consumption increases
Solution Approach 1:
The discharge structure is segmented into multiple independent outlet passages (first outlet passage for light phase, second outlet passage for heavy phase) with different discharge locations and directions. This segmentation allows each phase to be discharged at optimized radii, reducing overall energy consumption while maintaining a manageable structural complexity through modular design
Solution Approach 2:
The invention introduces spatial dimensionality by discharging phases in different directions (one opposite to rotation, one in rotation direction) and at different radii. This multi-dimensional discharge approach resolves the energy-consumption contradiction by optimizing the discharge path for each phase independently rather than using a single radial discharge point
2Reliability
If the flange and partition are used to separate discharge areas and prevent re-mixing, then phase separation efficiency improves, but device complexity increases
Solution Approach 1:
The casing is segmented into proximal and distal compartments by a partition, with each compartment receiving a different phase. The flange further segments the discharge areas. This segmentation ensures reliable phase separation by physically isolating the two phases throughout the discharge process, while the modular compartment design keeps structural complexity manageable
Solution Approach 2:
The partition acts as an intermediary element between the two discharge streams, preventing direct contact and re-mixing of phases. The flange serves as another intermediary structure that separates the discharge areas. These intermediary components reliably prevent phase re-mixing while adding only moderate structural complexity
3Adaptability or versatility
If the outlet housing is made rotatable to adjust weir edge level, then adaptability improves, but device complexity increases
Solution Approach 1:
The outlet housing is designed to be rotatable, transforming it from a static to a dynamic component. This allows the weir edge level to be adjusted by rotating the housing to different angular positions, providing adaptability for different operating conditions. The rotational mechanism adds moderate complexity but enables versatile level adjustment without requiring multiple fixed structures
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 configuration reduces energy consumption by discharging phases at a smaller radius from the axis of rotation, minimizing energy loss and enhancing operational efficiency.
Implementation Method 1
a centrifugal separator, in particular, a decanter centrifuge, for separating two phases of liquid of different density
Data Source
AI summary
A centrifugal separator for liquids with two phases of different density includes a bowl with a base defining a first rear area in a casing. At least two outlet passages extend through the base. A first outlet passages communicates with a first outlet opening discharging liquid in the first rear area, and the second outlet passages communicates with a second outlet opening discharging liquid in a second rear area rear of said first rear area. A flange attached to the bowl and a partition of the casing with an annular sealing in between separates the first and the second rear area.