Cutting Ring Pipe Fitting for Sequential Edge Sealing
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Solution Overview
Problem
Existing pipe fittings fail to provide a secure and efficient connection between pipes and fittings, particularly in high-pressure applications, due to inadequate engagement of cutting edges and deformation of the cutting ring, leading to potential leakage and instability.
Innovation Solution
A pipe fitting design featuring a socket with a counterbearing that applies force to a cutting ring, ensuring it is securely positioned and deformed to engage cutting edges effectively, with cones and threads aligning to ensure proper assembly and sealing, allowing for high-pressure fluid conveyance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cutting ring is deformed to engage cutting edges effectively, then the sealing efficacy is improved, but the stability of the cutting ring structure deteriorates
Solution Approach 1:
The cutting ring is divided into multiple functional zones with different deformation characteristics. The first portion (with first cutting edge) is designed to deform and engage with the pipe, while the second portion (with second cutting edge) maintains structural stability. This segmentation allows different parts of the cutting ring to serve different functions - one for sealing engagement and another for structural support.
2Productivity
If the counterbearing applies force to push the cutting ring into the nozzle, then the assembly efficiency is improved, but the deformation control of the cutting ring deteriorates
Solution Approach 1:
The counterbearing applies force locally to specific portions of the cutting ring rather than uniformly across the entire ring. This localized force application allows the first portion of the cutting ring to deform for engagement while the second portion remains relatively stable, enabling both efficient assembly and controlled deformation.
3Reliability
If the first cutting edge is positioned closer to the first end than the second cutting edge, then the sequential engagement is improved, but the complexity of the cutting ring design deteriorates
Solution Approach 1:
The first cutting edge is positioned to engage with the pipe before the second cutting edge during the assembly process. This preliminary action ensures proper sequencing where the first cutting edge initiates the engagement and deformation, followed by the second cutting edge completing the connection. The positioning is designed into the component geometry to automatically achieve this sequence during assembly.
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 provides a robust and leak-proof connection capable of withstanding pressures up to 4000 bar by ensuring sequential engagement of cutting edges and precise alignment of cones, enhancing stability and sealing efficacy.
Implementation Method 1
The counter bearing preferably serves to apply a force to the cutting ring and push it into the nozzle
Implementation Method 2
The first inner cone is configured to operatively connect with the first outer cone in the operating position. The second inner cone is configured to operatively connect with the second outer cone in the operating position
Data Source
Figure 1~2
Figure 3
Figure 4~6
AI summary
A pipe screw connection (1) is to comprise a nozzle (5), a cutting ring (3) and a counter bearing (4), wherein the pipe screw connection (1) comprises four cones (13, 14, 16, 17), wherein the cones (13, 14, 16, 17) are dimensioned and arranged such that during the production of the use position first the first cutting edge (11) and subsequently the second cutting edge (10) cuts into a surface of a pipe end section (2).