Support Tube Length Compensator for Pressure-Stable Pipeline Expansion
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Solution Overview
Problem
Existing length compensators for pipelines face challenges such as requiring excessive space, having limited compensation paths, and not being able to withstand the same internal pressure as the pipeline, while also lacking low frictional resistance for efficient length changes.
Innovation Solution
A length compensator design featuring two plastic connection components with a thermoplastic elastomer compensation element arranged between them, surrounded by a round support tube that allows only axial expansion and contraction, ensuring the internal pressure is absorbed by the support tube and minimizing stress on the compensation element, with a friction-reducing layer for low resistance and a stop element for controlled expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a compensating element is used to absorb pipeline length changes, then the compensation path is extended, but the internal pressure causes stress on the compensating element
Solution Approach 1:
The device divides the compensation function into two separate components: the compensating element (elastomeric hose) handles length changes, while the support tube handles internal pressure. This segmentation allows each component to be optimized for its specific function without compromising the other.
Solution Approach 2:
The support tube acts as an intermediary structure that surrounds the compensating element. It provides mechanical support and pressure containment, enabling the compensating element to extend its compensation path without being limited by pressure resistance requirements.
2Adaptability or versatility
If the compensating element is allowed to expand freely in all directions, then the compensation capacity increases, but the structural stability decreases
Solution Approach 1:
The support tube provides asymmetric constraints: it restricts radial expansion while allowing axial movement. This asymmetric support enables the compensating element to expand capacity in the axial direction while maintaining structural stability through radial confinement.
Solution Approach 2:
The support tube provides localized quality differentiation by offering rigid radial support while maintaining flexible axial movement capability. This local quality control allows the system to achieve both stability and adaptability in different directions.
3Strength
If the outer surface of the compensating element has high friction, then the connection strength increases, but the length adjustment resistance increases
Solution Approach 1:
A friction-reducing layer is introduced as an intermediary between the compensating element and the support tube. This layer decouples the connection strength requirement from the friction level, allowing strong mechanical connection while maintaining low friction for easy length adjustment.
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 long compensation path that withstands the pipeline's internal pressure, allows for efficient length adjustments with minimal resistance, and maintains pipeline stability without unintended bending or movement, while ensuring tight connections and easy assembly.
Implementation Method 1
The length of a pipeline changes depending on the temperature, whether due to the ambient temperature or the temperature of the medium transported in the pipeline
Implementation Method 2
a compensating element made of an elastic material consisting of a thermoplastic elastomer (TPE)
Implementation Method 3
the internal pressure is absorbed by the support tube, preventing the compensating element from being overloaded
Implementation Method 4
The outer surface of the compensating element should have low frictional resistance to facilitate easy length adjustment of the length compensator
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Length compensator comprising two connection components (2), a compensating element (3) made of an elastic material, preferably thermoplastic elastomer (TPE), and a support tube (4), wherein the compensating element is arranged between the two connection components and the compensating element ends (8) are connected to the connection components, wherein the outer surface of the compensating element is appropriately encompassed by the inner surface of the support tube around its entire circumference, wherein the support tube has a round cross-sectional area.