Combined Pipeline Press-Fitting Joint With Embedded Teeth Sealing
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Solution Overview
Problem
Existing press-fitting pipeline connections rely on the principle of reverse teeth for axial tensile resistance, which may not provide sufficient reliability and can damage sealing rings during assembly.
Innovation Solution
A press-fitting joint for combined pipelines that uses a gear ring with embedded teeth, a sealing ring, and an elastic gasket, where the components are compressed and axially limited within a circumferential groove to achieve a secure, non-rotational connection, enhancing sealing and tensile resistance without damaging the sealing ring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the principle of reverse teeth is used to achieve axial tensile resistance, then the connection strength is improved, but the sealing ring may be damaged during assembly
Solution Approach 1:
The gear ring is segmented into multiple embedded teeth that are distributed around the circumference. This segmentation allows the teeth to embed into the pipe wall individually, distributing the stress and reducing the risk of damaging the sealing ring while still achieving the required axial tensile resistance through the combined effect of multiple teeth
Solution Approach 2:
Instead of using reverse teeth that engage with each other to create tensile resistance, this invention inverts the approach by using embedded teeth that directly engage with the pipe wall. The teeth are embedded into the pipe wall in a radial direction, and their orientation and arrangement provide axial tensile resistance through friction and mechanical interlocking rather than through reverse tooth engagement
2Reliability
If the sealing ring and gear ring are compressed simultaneously during press-fitting, then the sealing effect is improved, but the complexity of the press-fitting process increases
Solution Approach 1:
The sealing ring and gear ring are merged into a single integrated component. The gear ring itself serves both as the sealing element and as the tensile resistance element with embedded teeth. This merging eliminates the need for separate compression of multiple rings, simplifying the press-fitting process while maintaining effective sealing through the continuous contact between the gear ring and pipe wall
3Reliability
If embedded teeth are used instead of reverse teeth, then the connection reliability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The embedded teeth are designed with specific local characteristics including optimized tooth shape, size, and distribution pattern. The teeth have rounded tips and controlled depth to facilitate smooth embedding into the pipe wall without requiring high precision. The local quality of each tooth is optimized to achieve reliable mechanical interlocking while being tolerant of normal manufacturing variations
Solution Approach 2:
The design parameters of the embedded teeth are optimized to balance reliability and manufacturability. The tooth dimensions, spacing, and embedding depth are carefully selected to provide sufficient tensile resistance while allowing for standard manufacturing tolerances. The parameters are adjusted to ensure that the teeth can embed reliably into the pipe wall without requiring excessive precision in the pressing process
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 solution provides a reliable, high-strength connection that prevents axial or rotational movement of pipes, while the elastic gasket enhances sealing and protects the sealing ring, improving the overall reliability and tensile resistance of the press-fitting joint.
Implementation Method 1
an elastic gasket... with compression, on the one hand, the sealing ring and the elastic gasket are flattened to a certain extent, forming a good fit with the outer wall of the pipe
Implementation Method 2
due to the axial limit for the sealing ring and the elastic gasket and the effect of the embedded teeth, the embedded teeth of the gear ring are generally controlled to be radially embedded into the outer wall of the pipe, thereby achieving the connection effect of tensile resistance through embedding
Implementation Method 3
with compression, on the one hand, the sealing ring and the elastic gasket are flattened to a certain extent, forming a good fit with the outer wall of the pipe
Data Source
AI summary
A press-fitting joint for combined pipeline includes a pipe coupling, a sealing ring, a gear ring and an elastic gasket. An inner face of the gear ring is provided with a plurality of embedded teeth arranged towards an axis, a press-fitting section of the pipe coupling is provided with a circumferential groove on an inner surface thereof, the sealing ring, the elastic gasket and the gear ring are mounted in the circumferential groove and arranged sequentially along an axial direction from an outer side to an inner side, an outer end face of the gear ring is axially matched with an outer sidewall of the circumferential groove, and an inner sidewall of the circumferential groove is axially matched with the sealing ring, outer circumferential faces of the gear ring, the elastic gasket and the sealing ring are in contact and matched with a bottom face of the circumferential groove.