Grooved Carbon Fiber Heating Layer Electrical Connection
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Solution Overview
Problem
Existing methods for supplying electrical power to carbon fibre heating layers in pipes transporting hydrocarbons are inefficient and prone to localized heating, which can cause damage and blockages due to freezing or thickening of fluids in extreme environments.
Innovation Solution
A method involving the formation of an electrical connection using a junction layer and a connection strip with low electrical resistance, where a groove is machined in the heating layer to accommodate the connection, and a protective layer is applied to prevent damage from heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If copper conducting lines are placed around the pipes for electrical heating, then the heating function is provided, but the heating is concentrated around the lines and spreads by conduction which is somewhat ineffective
Solution Approach 1:
The patent replaces traditional copper conducting lines with a carbon fiber heating layer that distributes heating more uniformly across the pipe surface. The carbon fiber mat with embedded conductive threads creates a distributed heating system rather than concentrated line heating, improving thermal distribution efficiency
Solution Approach 2:
The patent changes the heating method from conduction through copper lines to radiant heating through carbon fiber, altering the thermal transfer mechanism. This parameter change enables more uniform heat distribution across the pipe surface while maintaining energy efficiency
2Ease of operation
If conventional power supply means are used for the heating layer, then electrical power can be supplied, but the means are somewhat ineffective and are complicated to implement
Solution Approach 1:
The patent merges the heating function and power supply function into a single integrated carbon fiber layer. The conductive threads are embedded within the carbon fiber mat itself, eliminating the need for separate heating elements and power supply components, thereby simplifying implementation while improving reliability
Solution Approach 2:
The carbon fiber layer serves multiple functions simultaneously: it provides structural reinforcement, thermal insulation, and electrical heating capability. The conductive threads embedded in the carbon fiber mat create a multi-functional composite structure that eliminates the need for separate components
3Power
If high current is used to supply the heating layer, then sufficient heating power is provided, but localized heating may occur which can cause damage
Solution Approach 1:
The patent uses a distributed network of conductive threads embedded throughout the carbon fiber mat to distribute current and heating uniformly across the pipe surface. This local quality distribution prevents concentration of current and eliminates localized overheating while maintaining sufficient total heating power
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 method provides a reliable, low-resistance electrical connection that prevents localized heating, ensuring the heating device operates effectively and reduces the risk of blockages in extreme environments.
Implementation Method 1
a first electrically conducting material... electrically powered in order to heat the tube
Implementation Method 2
The heating is first of all concentrated around these lines, and then spreads by conduction
Data Source
AI summary
A method for forming an electrical connection in a pipe for transporting a fluid. The pipe comprises an internal hollow tube and a heating layer comprising first fibers made of carbon. There are performed a groove-formation step in which a groove is formed in the heating layer, an interface-preparation step in which a junction layer is placed on the heating layer of the groove, and a placement step in which a connection strip comprising second fibers formed of a second electrically conducting material is wound on the junction layer.