Deflection Bend for Wastewater Rotation
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Solution Overview
Problem
Conventional deflection bends in sewer pipes result in significant flow losses due to the conversion of stratified horizontal flow to vertical flow, necessitating larger diameters to maintain drainage performance.
Innovation Solution
A deflection bend design featuring a first pipe section, a deflection section, and a second pipe section, where the deflection section is formed by geometric guidelines that allow wastewater to rotate as it flows from the first pipe section to the second, minimizing double deflection and flow losses by maintaining a controlled rotation along the walls of the second pipe section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional pipe bend is used to convert horizontal stratified flow to vertical ring flow, then the flow direction is changed, but large flow losses occur requiring larger diameter pipes
Solution Approach 1:
The deflection bend is divided into multiple sections: a first pipe section for horizontal flow, a deflection section with curved guideline for transition, and a second pipe section for vertical flow. This segmentation allows gradual flow direction change and reduces abrupt flow separation, thereby minimizing flow losses while maintaining drainage capacity.
Solution Approach 2:
The deflection section employs a curved guideline (circular arc) to guide the flow transition from horizontal to vertical direction. The curved path enables smooth flow redirection without sharp angles, reducing turbulence and flow separation losses, thus improving energy efficiency while achieving the required deflection.
2Productivity
If the deflection section allows guideline to be deflected out of the vertical plane, then wastewater rotation is achieved, but the structure becomes more complex
Solution Approach 1:
The guideline of the deflection section is deflected out of the vertical plane containing the first and second pipe sections. This three-dimensional configuration enables the wastewater to rotate as it flows through the deflection section, improving flow dynamics and drainage capacity without requiring additional components or complex mechanisms.
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 enhances drainage capacity by reducing flow losses and preventing further deflection, thereby improving the overall drainage performance without the need for larger diameters.
Implementation Method 1
The deflection is such that the wastewater from the first pipeline section is set in rotation about the third guideline as it flows through said section and can be fed in rotation to the second pipeline section
Data Source
Figure 1~2
Figure 3
Figure 4a~4b
AI summary
A deflection bend for guiding wastewater (A) comprises a first pipeline section (1) extending along a first guideline (L1) designed as a straight line, a second pipeline section (2) extending along a second guideline (L2) designed as a straight line, and a deflection section (3) connecting the first pipeline section (1) with the second pipeline section (2), wherein the deflection section (3) extends along a third guideline (L3), which third guideline (L3) connects the first guideline (L1) with the second guideline (L2). At least one of the subsections (4, 5, 6) allows the guideline (L3) of the deflection section (3) to be deflected from the said vertical plane (VE) in such a way that the wastewater from the first pipeline section (1) is set into rotation around the third guideline (L3) when flowing through the said subsection (4, 5, 6) and can be directed in rotation to the second pipeline section (2).