Tension-Resistant Coupling Piece With Segmented Grip Rings
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Solution Overview
Problem
The existing coupling pieces for high-pressure pipes face difficulties in efficient construction and placement due to the complexity of conical rings, leading to challenges in maintaining a secure grip under high pressure conditions.
Innovation Solution
A coupling piece design featuring an elongated body with an annular chamber and two grip rings, where the first grip ring consists of arc segments and the second grip ring is used to press the first grip ring against the chamber wall, providing a more efficient and easier assembly process, with the second grip ring's toothing enhancing the grip on the pipe end.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conical ring is used to grip the pipe end, then the grip strength under tensile force is improved, but the device complexity and difficulty of placement increase
Solution Approach 1:
The coupling piece is divided into multiple functional components: an elongated body, a chamber, a first grip ring with arc segments, and a second grip ring. This segmentation allows each component to perform its specific function independently, simplifying the overall construction while maintaining effective grip capability.
Solution Approach 2:
The complex conical ring structure is extracted and replaced with a simpler chamber-grip ring system. The chamber provides the structural framework, while the grip rings provide the gripping function, separating these functions into distinct, simpler components.
2Reliability
If a conical ring is used to maintain grip under high pressure, then the reliability under high pressure is improved, but the ease of manufacture and assembly deteriorates
Solution Approach 1:
The grip ring is divided into arc segments that can be independently manufactured and then assembled within the chamber. This segmentation makes manufacturing easier while maintaining the reliability needed for high-pressure applications.
Solution Approach 2:
The first grip ring with arc segments is nested within the chamber, and the second grip ring is nested within the first grip ring. This nested arrangement simplifies assembly as components fit into each other sequentially without requiring complex alignment procedures.
3Stability of the object's composition
If the first grip ring is made as a single piece, then the structural integrity is improved, but the ease of placement and assembly deteriorates
Solution Approach 1:
The first grip ring is segmented into arc segments that can be easily placed into the chamber. These segments are then held together by the second grip ring, maintaining structural integrity while enabling easy placement and assembly.
4Force
If the third diameter of the second chamber portion is small, then the grip force on the pipe end is improved, but the ease of insertion of the pipe end deteriorates
Solution Approach 1:
The second chamber portion has a variable diameter that transitions from a larger opening to a smaller gripping section. This dynamic geometry allows the pipe end to be easily inserted through the larger opening while still providing sufficient grip force in the smaller section where the grip rings act.
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 design results in a more efficient construction that is easier to assemble and maintain, offering improved grip and resistance to tensile forces, suitable for high-pressure pipes without requiring significant deformation of the grip ring, ensuring secure attachment of the pipe end within the coupling piece.
Implementation Method 1
a second grip ring in the chamber, adapted to press the first grip ring in a radial direction against a chamber interior wall of the second chamber portion of the chamber
Implementation Method 2
the second grip ring is provided with a radially oriented toothing which extends over at least a part along an inner circumference of the second grip ring
Data Source
Figure 1
Figure 2A~2E
Figure 3A~4
AI summary
The invention relates to a coupling piece for a first pipe piece, the coupling piece comprising an elongated body having an opening for receiving a pipe end of the first pipe piece at at least one end, the elongated body comprising an inner wall having a first diameter, provided with an annular chamber spaced apart from the end of the coupling piece and being bounded by a first abutment wall at a distance other than zero from the opening, the chamber comprising a first chamber portion and a second chamber portion, the first chamber portion having a second diameter and extending from the first abutment wall in the direction of the opening, the second chamber portion having a third diameter and extending from the first chamber portion in the direction of the opening, the third diameter decreasing in the direction of the opening, and wherein holds that the first diameter is smaller than or equal to the third diameter and the third diameter is smaller than or equal to the second diameter. The coupling piece further comprises a first grip ring inside the chamber provided with at least two arc segments, which arc segments together form at least a part of a circle and a second grip ring inside the chamber adapted to press the first grip ring in a radial direction against a chamber inner wall of the second chamber portion of the chamber.