Universal Press-Fit Pipe Joint for M and V Tool Sealing
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Solution Overview
Problem
Pressfitting connection systems face challenges in achieving reliable mechanical and watertight seals due to the need for specific tooling for M and V profiles, leading to inconsistent quality and duration of connections.
Innovation Solution
A universal pipe connection system with an annular bulge and groove featuring inclined side walls and a non-rounded gasket with an isosceles trapezoidal cross-section, allowing for compatibility with both M and V profile pressing tools, enhancing the filling of the groove and compression factor for improved tightness and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate pressing tools are used for M and V profile fittings, then each tool can achieve optimal mechanical clamping and sealing for its specific profile, but the system complexity increases and consistency of connection quality deteriorates due to multiple tooling requirements
Solution Approach 1:
The pressing tool is designed with a universal jaw profile that can accommodate both M and V profile fittings. The jaw features a specific geometry with a pressing surface that works effectively with both fitting types, eliminating the need for separate specialized tools while maintaining connection quality consistency across different fitting profiles
Solution Approach 2:
The pressing jaw incorporates localized geometric features optimized for different fitting types in specific zones. The jaw profile includes varying curvature and pressure distribution characteristics at different contact points, allowing it to adapt to both M and V profiles while maintaining optimal mechanical clamping and sealing performance for each
2Adaptability or versatility
If a universal fitting profile is designed to work with both M and V pressing tools, then tool compatibility improves, but the manufacturing precision and connection reliability may deteriorate due to compromised profile optimization
Solution Approach 1:
The fitting profile incorporates variable geometric parameters including different curvature radii, wall thickness distributions, and bulge geometries that can accommodate both M and V pressing tool characteristics. The profile parameters are optimized within specific ranges to ensure compatibility while maintaining manufacturing precision and connection reliability for both tool types
3Reliability
If the gasket groove is designed for optimal filling with traditional profiles, then sealing effectiveness improves, but the compression factor decreases reducing tightness under varying pressure conditions
Solution Approach 1:
The gasket groove features an asymmetric cross-sectional profile with different wall angles and curvature characteristics on opposing sides. This asymmetric geometry optimizes both gasket filling during pressing and compression factor under load, allowing the gasket to seal effectively while maintaining high compression resistance for tightness under varying pressure conditions
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 ensures a stable and long-lasting mechanical and watertight connection regardless of the pressing tool used, as the gasket's unique shape fills the groove effectively and provides a higher compression factor, accommodating both M and V profile deformations.
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
Data Source
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AI summary
Universal pipe connection system comprising: a fitting annular bulge (101) at least at an end portion which annular bulge forms on the inner side of the tubular body (1) an annular groove (201) housing a sealing gasket which groove is open towards the inside of the tubular body and which end portion extends on the side opposite to the end of the fitting by a cylindrical portion (401), said tubular body forming a fitting socket for the end portion of a pipe (4); there being provided at least one type of pressing tool (3) having at least two opposite pressing jaws which are intended to cooperate with said end portion (101, 301, 401) of the fitting, by surrounding it along its circumference and they have a profile of the surface in contact with said end portion shaped such to press said end portion against the end of a tube (4) inserted into said fitting, determining in at least one circumferential band adjacent to the bulge a contemporaneous deformation of the wall of the pipe (4) and at least of one cylindrical portion (301, 401) of said end portion (101, 301, 401) that are mechanically clamped together in the circumferential and axial direction and a deformation of the annular bulge (101) that presses the gasket (2) generating the tight sealing effect between said tubular body (1) and the end of the pipe (4) inserted therein, wherein the annular bulge (101) and the corresponding annular groove (201) are provided at a given axial distance from the end of the end portion of the tubular body (1), there being provided an initial cylindrical portion (401) between said end and the side of the bulge facing it; the annular bulge (101) and the corresponding groove (201) having such a geometry and size to cooperate alternatively with two different types of pressing tools selected among a pressing tool (3) of the type having M profile and a pressing tool (3) of the type having V profile; the system comprising alternatively or in combination both a pressing tool (3) with jaws having a profile corresponding to the M profile of the fitting and a pressing tool with jaws having a profile corresponding to the V profile of the fitting.