Formed Pipe End Section With Bead and Chamfer for 60° Cone Sealing
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Solution Overview
Problem
The existing pipeline connections, particularly those adhering to British Standard BS5200, require excessive steel material and suffer from reduced material properties due to the material flow during the forming process, making it challenging to achieve the necessary sealing function and structural integrity for 60° cone fittings.
Innovation Solution
A formed pipe end-section with an annular bead, chamfer, and radial recess is introduced, which allows for a more efficient use of material by reducing the diameter through deformation, enhancing material properties while providing multiple sealing areas through the engagement of a sealing ring and conical surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a 10 mm tube is used to create the BS5200 geometry, then the required connecting size is achieved, but the material properties such as tensile strength and pressure resistance are reduced due to material flow during forming
Solution Approach 1:
The invention changes the geometric parameters of the pipe end-section by introducing a specific bead profile with defined dimensions (height h1, width b1, radius r1) and a chamfer with specific angle alpha. These parameter changes allow achieving the required connecting geometry while controlling material flow to preserve material properties.
Solution Approach 2:
The invention applies local quality by creating a bead structure with specific local geometric features (annular bead with defined height, width and radius) at the pipe end-section. This localized geometric modification enables proper sealing and connection geometry without requiring excessive material flow that would degrade overall material properties.
2Reliability
If the pipe end-section is formed to accommodate BS5200 dimensions, then the sealing function is achieved, but excessive steel material is required
Solution Approach 1:
The invention optimizes the geometric parameters of the bead and chamfer to achieve the minimum necessary material volume for reliable sealing. By precisely defining the bead height h1, width b1, and radius r1, the solution achieves adequate sealing function with reduced material quantity compared to conventional BS5200 implementations.
3Shape
If material flow is increased during the forming process to achieve the required geometry, then the connecting size is achieved, but the material properties are degraded
Solution Approach 1:
The invention controls material flow during forming by optimizing the bead geometric parameters (height h1, width b1, radius r1) and chamfer angle alpha. These parameter changes enable achieving the required connecting geometry while minimizing excessive material flow that would cause property degradation.
Solution Approach 2:
The invention applies partial action by providing just enough material flow to achieve the necessary bead geometry for sealing and connection, rather than excessive material flow. The controlled material deformation achieves the required shape without over-forming that would degrade material properties.
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 proposed solution enables a more efficient use of material, maintaining structural integrity and enhancing sealing performance without degrading material properties, thus overcoming the limitations of the standard pipeline connections.
Implementation Method 1
a chamfer reducing a diameter of the pipe end-section from the annular bead towards the end of the pipeline
Implementation Method 2
a radial recess configured to accommodate a sealing ring, wherein the chamfer extends at least between the annular bead and the radial recess
Data Source
AI summary
A formed pipe end-section of a pipeline for connecting the pipeline at an end includes: an annular bead with a first abutment face facing away from the end of the pipeline and a second abutment face facing towards the end of the pipeline; a chamfer reducing a diameter of the pipe end-section from the annular bead towards the end of the pipeline; and a radial recess for accommodating a sealing ring. The chamfer extends at least between the annular bead and the radial recess.