Sprinkler Pipe Fitting Wall Structure for Lower Pressure Loss
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Solution Overview
Problem
Fire protection sprinkler systems face challenges in delivering fluid efficiently and reliably due to pressure losses and material usage inefficiencies in pipe fittings, which affect hydraulic performance and installation ease.
Innovation Solution
The development of pipe fittings with a wall structure featuring a knit line and varying wall thicknesses, optimized through injection molding to reduce material usage and stress concentrations, allowing for improved hydraulic performance and compact design while maintaining hydrostatic strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pipe fittings use uniform wall thickness, then manufacturing is simpler, but material usage is inefficient and stress concentrations occur
Solution Approach 1:
The pipe fitting employs varying wall thickness distributed throughout the structure, with thicker walls positioned in high-stress regions and thinner walls in low-stress regions. This non-uniform thickness distribution optimizes material usage while maintaining structural integrity and hydraulic performance.
2Ease of manufacture
If knit lines are positioned in high-stress areas, then manufacturing is easier, but hydrostatic strength is reduced
Solution Approach 1:
The knit lines are deliberately positioned in regions experiencing lower stress during operation, such as on the outer curvature of bends or in non-critical areas. This strategic placement ensures that the inherent weakness of knit lines does not compromise the overall hydrostatic strength of the pipe fitting.
Solution Approach 2:
The design accepts the presence of knit lines as an inevitable manufacturing feature and converts potential harm by positioning them in low-stress areas, thereby transforming a manufacturing constraint into a deliberate design strategy that maintains both manufacturability and structural integrity.
3Productivity
If pipe fittings have larger dimensions, then hydraulic performance improves, but installation space requirements increase
Solution Approach 1:
The pipe fitting utilizes optimized dimensional parameters including streamlined internal flow paths, smooth transitions, and minimized turbulence zones. These parameter optimizations enhance hydraulic performance by reducing pressure losses while maintaining a compact external footprint suitable for tight installation spaces.
Data Source
AI summary
A fire protection system can include one or more pipes coupled with a fluid source, a pipe fitting coupled with the one or more pipes downstream of the fluid source, and at least one sprinkler coupled with the one or more pipes and the pipe fitting. The pipe fitting can include a wall defining an opening, the wall having an outer diameter, a first wall thickness at the opening, and a second wall thickness inward from the opening, the second wall thickness greater than the first wall thickness. The at least one sprinkler can be coupled with the one or more pipes and the pipe fitting to receive fluid from the fluid source through the one or more pipes and the pipe fitting.