Pipeline Swirl Control Using Flow Straighteners and Swirl Generators
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Solution Overview
Problem
Existing pipeline systems face challenges in adapting fluid swirl to desired flow conditions, particularly in engine bays where bends cause varying pressure losses dependent on swirl direction and magnitude, necessitating a method to measure and control swirl effectively.
Innovation Solution
A device comprising a series of flow straighteners and swirl generators, where each series starts with a flow straightener to establish a laminar flow, followed by swirl generators to intensify or reduce swirl, allowing for precise adaptation of flow conditions in pipelines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If bends are introduced in the pipeline to adapt to installation conditions, then the pipeline can be adapted to engine bay geometry, but pressure losses increase due to swirl generation
Solution Approach 1:
The patent applies preliminary action by introducing flow straighteners before bends to eliminate swirl in advance, and swirl generators after bends to restore desired swirl. This preparatory and corrective arrangement ensures that the pipeline can be bent to adapt to installation conditions without suffering excessive pressure losses, as the swirl is controlled at critical locations rather than being a continuous problem throughout the pipeline.
Solution Approach 2:
The patent applies local quality by placing flow control devices (flow straighteners and swirl generators) only at specific locations where needed - namely before and after bends - rather than throughout the entire pipeline. This localized approach addresses the swirl problem only where it affects performance most, allowing the pipeline to maintain adaptability to installation conditions while minimizing energy losses at the critical bend regions.
2Productivity
If charge air is cooled through a charge-air pre-cooler, then efficiency is improved, but specific flow conditions including swirl must be maintained
Solution Approach 1:
The patent applies parameter changes by using controllable swirl generators that can adjust the swirl parameter dynamically. This allows the system to maintain the specific swirl conditions required for optimal charge-air pre-cooler performance while still adapting to varying operating conditions and pipeline geometries. The swirl generator modifies the flow parameters (swirl intensity and direction) to match the requirements of the cooling device, thereby maintaining high cooling efficiency without being constrained by fixed flow conditions throughout the entire system.
3Measurement precision
If multiple swirl generators and flow straighteners are installed at successive locations, then flow conditions can be precisely controlled, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the flow control function into discrete segments - flow straighteners positioned before bends and swirl generators positioned after bends - rather than using a single complex device. Each segment performs a specific function (eliminating swirl or generating swirl) at a specific location, which simplifies the design of individual components while achieving precise overall control. This segmented approach reduces device complexity compared to a monolithic swirl control system while maintaining high precision in flow condition control.
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
Enables the generation and control of predetermined swirl at multiple locations, optimizing fluid flow through bends and charge-air coolers by ensuring laminar-to-turbulent transitions tailored to pipeline geometry, thereby minimizing pressure losses and enhancing efficiency.
Implementation Method 1
the flow no longer exhibits swirl, that is to say is laminar
Implementation Method 2
a predetermined swirl is able to be imparted to the fluid
Data Source
AI summary
The invention relates to a device for controlling the swirl of a fluid (2, 7) flowing in a pipeline (1, 6), comprising a pipeline (1, 6) in which a fluid (2, 7) flows. The invention was based on the object of creating a device with which the adaptation of the swirl of a fluid (2, 7) flowing in a pipeline (1, 6) to the desired flow conditions in the pipeline (1, 6) is possible. Said object is achieved in that the device has at least one predetermined series of flow straighteners (5, 8) and swirl generators (4, 9, 10).