Unified Press Sleeve Geometry for Rigid and Flexible Pipe Connections

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Solution Overview

Problem

The complexity of on-site piping system installations is heightened by the need for multiple press jaws and tools to accommodate different pipe diameters and types, leading to increased effort and logistical challenges due to the lack of standardized fitting geometries for rigid and flexible pipes.

Innovation Solution

Designing fittings with press sleeves that have matching outer contours, allowing the same pressing tool and jaw to be used for both rigid and flexible pipes, thereby reducing the number of tools required and simplifying the installation process by using the same pressing contour for both types.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If different press jaws and tools are used for rigid and flexible pipes, then the connection can be made tight and secure, but the tool complexity and on-site effort increase significantly

Engineering Contradiction:
Improveconnection tightnessVSAvoidtool variety
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies universality by designing press sleeves with standardized outer contours that can be used for both rigid and flexible pipes. The press sleeve geometry is made compatible across different pipe types, allowing a single pressing tool to perform multiple functions. This eliminates the need for separate press jaws for rigid and flexible pipes, reducing tool complexity while maintaining reliable connections for both pipe types.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple press jaws are kept on hand for different pipes, then various pipe types can be connected, but the on-site effort and time required increase

Engineering Contradiction:
Improvepipe type compatibilityVSAvoidon-site installation time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The press sleeve design enables a single tool to handle both rigid and flexible pipes through standardized outer contours, eliminating the need to switch between multiple press jaws during installation. This universal design maintains adaptability to different pipe types while significantly reducing on-site installation time by eliminating tool changes.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the functionality of separate press jaws for rigid and flexible pipes into a single unified press sleeve design. By combining the pressing capabilities for both pipe types into one standardized component, the system reduces the number of tools needed and simplifies the installation process.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If standardized press sleeve geometries are used for both rigid and flexible pipes, then tool complexity is reduced, but the manufacturing precision requirements increase

Engineering Contradiction:
Improvepressing tool simplicityVSAvoidpress sleeve geometry tolerance
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The patent applies local quality by standardizing only the outer contour geometry of the press sleeves that interfaces with the pressing tool, while allowing internal geometries to remain optimized for specific pipe types. This approach reduces device complexity for the pressing operation while maintaining the manufacturing precision needed only where it matters most - at the pressing interface.

Inventive Principle:
Principle #3Local quality

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

This approach enables efficient installation of both rigid and flexible pipes with reduced tool complexity and time, ensuring a tight and secure connection while minimizing flow losses due to similar external diameters, thus simplifying site operations and reducing production and storage complexities.

Implementation Method 1

a press jaw deforms the press section of a fitting radially inwards with the pipe section inserted, creating a permanent and tight, and potentially even inseparable, connection

Methodology Applied
Scientific EffectRadial deformation: Deformation

Data Source

PatentEP4086018B1System for connecting rigid pipes and for connecting flexible pipes
Publication Date: 2024.06.26 VIEGA TECHNOLOGY GMBH & CO KG
  • EP4086018B1 patent drawingFigure 1a~1b
  • EP4086018B1 patent drawingFigure 1c~1d
  • EP4086018B1 patent drawingFigure 1e~1f

AI summary

The invention relates to a system for connecting rigid pipes (4) and flexible pipes (6), wherein the pipes (4, 6) have corresponding outer diameters, with a press jaw (10; 110) having a press contour (8; 108), with at least one first fitting (20; 120) for press connection to a rigid pipe (4), wherein the at least one first fitting (20; 120) has a first press sleeve (21; 121) with a first outer contour (22; 122), with at least one second fitting (40; 140) for press connection to a flexible pipe (6), wherein the at least one second fitting (40; 140) has a second press sleeve (41; 141) with a second outer contour (42; 142), wherein the outer contour (22; 122) of the first press sleeve (21; 121) and the The outer contour (42; 142) of the second press sleeve (41; 141) is adapted at least partially to the press contour (8; 108) of the press jaw (10; 110) and is formed by the press jaw (10;110) are pressable and wherein the outer contours (22; 122; 42; 142) of the first press sleeve (21; 121) and the second press sleeve (41; 141) coincide at least partially. This system solves the technical problem of simplifying the on-site effort for installing piping systems. The task is, in particular, to specify suitable combinations of fittings for rigid and flexible pipes.