Induction-Fused Thermoplastic Pipe for Localized Layer Joining
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Solution Overview
Problem
Current methods for fusing thermoplastic pipe layers using external heaters are energy-intensive, time-consuming, and imprecise, leading to inefficient and potentially weak pipe structures due to excessive heat input.
Innovation Solution
Incorporating induction heating compatible materials (IHCM) within or between the thermoplastic pipe layers, allowing for localized heating using induction heating technology to fuse the layers efficiently and effectively, reducing the need for extensive heat application and minimizing thermal stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If external heaters are used to heat the entire thickness of pipe layers until they soften or flow, then the layers can be fused together, but the process becomes energy intensive and time consuming
Solution Approach 1:
The patent applies induction heating to heat only the specific region where layers need to be fused, rather than heating the entire pipe thickness. The induction heating element is positioned to target the junction area locally, reducing overall energy consumption while achieving effective fusion at the required location.
Solution Approach 2:
The patent replaces conventional external contact heaters with induction heating technology, which uses electromagnetic fields to generate heat directly within the material. This substitution eliminates the need for thermal conduction through external heater contact, reducing energy loss and heating time.
2Strength
If external heaters are used to heat the entire thickness of pipe layers, then the layers can be fused together, but the process becomes imprecise and may cause excessive heat input
Solution Approach 1:
The induction heating system is configured to apply heat precisely to the junction area where layers meet, rather than heating the entire pipe wall. This localized heating approach allows for precise temperature control at the fusion point, avoiding excessive heat input that could compromise material properties.
Solution Approach 2:
Induction heating provides superior temperature control and precision compared to external contact heaters. The electromagnetic field can be precisely controlled to deliver the exact amount of heat needed for fusion, improving manufacturing precision and consistency.
3Temperature
If the entire thickness of pipe is heated by an external heater, then the junction can reach the desired temperature, but the process is time consuming
Solution Approach 1:
The patent replaces slow thermal conduction heating with induction heating, which generates heat directly within the material through electromagnetic induction. This eliminates the time required for heat to conduct through the entire pipe thickness from an external source, rapidly achieving the desired junction temperature.
Solution Approach 2:
By concentrating heating energy only at the junction area rather than heating the entire pipe thickness, the process achieves the required temperature much faster. The localized heating approach reduces the thermal mass that needs to be heated, significantly decreasing heating time.
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 method results in a more efficient, cost-effective, and consistent pipe manufacturing process that produces stronger, lighter pipes with reduced thermal expansion, enabling quicker cooling and improved structural integrity.
Implementation Method 1
using an induction heater, heating the IHCM to fuse the inner thermoplastic pipe with the outer layer of thermoplastic material
Implementation Method 2
heating the respective layer(s) until fusing occurs. The heating may involve heating the entire thickness of the respective layers until they soften or flow
Data Source
AI summary
A pipe may include an inner thermoplastic pipe and an outer layer of thermoplastic material. The outer layer of thermoplastic material may be wrapped around the inner thermoplastic pipe. The outer layer of thermoplastic material may be fused with the inner thermoplastic pipe. The pipe may also include an induction heating compatible material (IHCM) within or between at least one of the inner thermoplastic pipe or the outer layer of thermoplastic material.