Press-Fit Pipe Joint Geometry for M and V Tool Compatibility
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Solution Overview
Problem
Pressfitting connection systems face issues with flexibility in using different profiles, as small deviations in geometrical and dimension conditions can lead to reduced reliability and durability of mechanical and water-tight connections, requiring specific pressing tools for each profile type.
Innovation Solution
A universal pipe connection system with a tubular body featuring an annular bulge and groove housing a gasket, designed to work with both M and V profile pressing tools, incorporating inclined side walls and a gasket with an isosceles trapezoidal cross-section for enhanced filling and compression, ensuring compatibility and improved tightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a specific profile (M or V) is used for press fittings, then the mechanical clamping and sealing effectiveness is improved, but the flexibility to use different pressing tools is reduced
Solution Approach 1:
The fitting profile is designed with an annular bulge that can be deformed by both M-profile and V-profile pressing tools, allowing a single fitting design to work with multiple tool types. The bulge geometry is optimized to accommodate the deformation patterns of different tool profiles while maintaining reliable mechanical clamping and sealing functionality.
2Reliability
If the annular bulge is positioned at the end of the tubular body, then the sealing effectiveness is improved, but the structural complexity increases
Solution Approach 1:
The annular bulge is positioned specifically at the end portion of the tubular body where sealing is most critical. This localized geometric feature concentrates the deformation and sealing action at the precise location needed, while the rest of the tubular body maintains a simpler cylindrical structure. The bulge creates an annular groove that houses the sealing gasket, providing effective sealing without requiring complex overall fitting design.
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 system provides a flexible and reliable connection suitable for both M and V profile tools, with increased gasket filling and compression factors, resulting in a stable and long-lasting mechanical and water-tight seal.
Implementation Method 1
determining in at least one circumferential band adjacent to the bulge a contemporaneous deformation of the wall of the pipe and of said end portion that are mechanically clamped together
Implementation Method 2
a deformation of the annular bulge that presses the gasket generating tightness between said tubular body and the end of the pipe fitted therein
Implementation Method 3
the water-tight effect is generated that is guaranteed by the O-ring being deformed in its cross-section and that, by means of its elasticity, guarantees the permanent tightness of the connection
Implementation Method 4
the profile of the pressing jaws is made with such a shape to generate at least a radial recess, preferably a circumferential crown of radial recesses both in the wall of the fitting and in the wall of the pipe inserted therein. Such radial recesses mechanically lock the two parts to each other
Data Source
AI summary
A universal pipe connection system includes a fitting with a tubular body and an annular bulge defining an annular groove on the inner side of a tubular body, which houses a sealing gasket. The tubular body receives the end portion of a pipe so that a pressing tool having opposite pressing jaws can engage the tubular body and generate a circumferential band adjacent to the bulge by mechanically clamping the tubular body in the circumferential and axial directions and causing a deformation of the annular bulge, which presses the gasket, and generates a seal between the tubular body and the end of the pipe inserted therein. The annular bulge and the corresponding annular groove have a geometry and size adapted to cooperate with two different types of pressing tools, one with a M profile and one with a V profile, which may be present in the alternative or in combination.