Deflection Bend Guide Element for Downpipe Flow Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing deflection bends for downpipes require significant installation space and result in high hydraulic losses when transitioning from vertical to horizontal sections, affecting rinsing performance and energy efficiency.
Innovation Solution
A deflection bend design featuring a curved section with a guide element on the outside of the curve and a flow divider in the first pipe section, which suppresses transverse movement of the flow medium, allowing for a longer horizontal pipeline and reduced hydraulic resistance, enabling better flushing performance and potentially omitting ventilation lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a traditional deflection bend design is used to transition from vertical to horizontal pipe sections, then the installation space requirement is reduced, but the hydraulic losses increase and flushing performance deteriorates
Solution Approach 1:
The deflection bend is segmented into multiple functional zones: a first pipe section for vertical flow, a curved section with guide elements for flow transition, and a second pipe section for horizontal flow. This segmentation allows each zone to be optimized for its specific function, reducing overall hydraulic losses while maintaining flushing performance.
Solution Approach 2:
Guide elements are introduced as intermediary structures within the curved section to mediate the flow transition. These guide elements redirect the flow medium from the vertical to horizontal direction gradually, preventing energy loss associated with abrupt direction changes while maintaining effective flushing capability.
2Loss of energy
If the deflection bend is designed with a larger radius to reduce hydraulic losses, then the flushing performance improves, but the installation space requirement increases
Solution Approach 1:
The guide elements extend in the radial dimension of the curved section, creating a three-dimensional flow control structure. This allows the bend to achieve smooth flow transition with a tighter radius by utilizing the radial dimension for flow redirection, thereby reducing installation space while maintaining low hydraulic losses.
Solution Approach 2:
The guide elements modify the flow parameters (direction, velocity distribution) within the curved section to optimize the transition. By changing how the flow moves through the bend rather than changing the bend geometry itself, the design achieves efficient flow transition in a compact space.
3Loss of energy
If guide elements are added to suppress transverse flow movement, then the hydraulic losses are reduced and flushing performance improves, but the device complexity increases
Solution Approach 1:
The guide elements are merged with the pipe wall structure, forming an integrated component rather than separate attachments. This combining of functions reduces the number of separate parts and simplifies installation while maintaining the flow control functionality needed to reduce hydraulic losses.
Solution Approach 2:
The guide elements are designed as thin-walled structures that extend into the flow path, creating minimal structural complexity while effectively guiding the flow. The thin-film approach allows flow control without substantial structural additions.
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 design minimizes flow loss, enhances rinsing performance, and allows for a tighter deflection arc, maintaining energy efficiency while reducing space requirements, thus improving the overall performance of the deflection bend.
Implementation Method 1
the cross-sectional shape of the curved section is modified such that movement of the flow medium, in particular the water and solids, transverse to the flow direction can be suppressed, in particular prevented
Implementation Method 2
a flow divider is arranged on the inside of the first pipe section, which breaks up the film flow of the fluid, especially the water
Implementation Method 3
The ideal deflection also ensures that air can circulate freely alongside the water, equalizing any pressure differences
Data Source
Figure 1~2
Figure 3~6
Figure 7~7e
AI summary
A deflection bend (1) for a downpipe (2) for conveying a multiphase flow medium (S), in particular water, solids, and air, comprises a first pipe section (3) extending along a first central axis (M1), a curved section (4) adjoining this first pipe section (3) and extending along a curved centerline (M) with an outer curve (5) and an inner curve (6), and a second pipe section (7) adjoining the curved section (4) and extending along a second central axis (M2). A guide element (8) arranged on the inside of the outer curve (5) modifies the cross-sectional shape of the curved section (4) such that movement of the flow medium (S), in particular the water and solids, transverse to the flow direction can be suppressed, in particular prevented.