Magnetic Nanoparticle Lining Hose Curing for Uniform Pipe Renovation
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Solution Overview
Problem
UV light-curable resins used in trenchless pipe renovation suffer from uneven curing due to light absorption, leading to energy inefficiency and potential damage from heat generation, causing stress and overheating in the lining hose.
Innovation Solution
A thermally curable resin with magnetic nanoparticles is used, which is heated by an alternating magnetic field for uniform curing, reducing energy consumption and preventing overheating by localized heating within the lining hose.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If UV light is used to cure the resin in the lining hose, then the resin can be cured and the lining hose can be applied, but the UV light is absorbed in the material of the lining hose resulting in uneven or incomplete curing
Solution Approach 1:
The patent replaces the UV light-based curing system with a thermally curable resin system. Instead of using electromagnetic radiation (UV light) that gets absorbed by the fabric or nonwoven layer, the invention uses thermal energy to cure the resin. This substitution eliminates the absorption problem and achieves uniform curing throughout the lining hose material.
Solution Approach 2:
The patent changes the curing parameter from UV light intensity to temperature. By controlling the temperature through heating elements or external heat sources, the resin can be cured uniformly throughout the material without the absorption issues that plague UV curing. The curing process is controlled by temperature parameters rather than light intensity parameters.
2Reliability
If high intensity UV light is used to ensure reliable curing through the entire thickness of the lining hose, then curing reliability is improved, but energy consumption increases significantly
Solution Approach 1:
The patent substitutes the high-energy UV light system with a thermal curing system. Thermal energy can be more efficiently transferred and controlled through the lining hose material, achieving reliable curing without the excessive energy consumption associated with high-intensity UV light sources.
Solution Approach 2:
The patent changes the curing parameter from UV light intensity to temperature control. Thermal curing allows for more efficient energy utilization because heat can be conducted through the material more effectively than UV light penetration, reducing overall energy consumption while maintaining curing reliability.
3Reliability
If high intensity UV light sources are used for curing, then the resin can be reliably activated, but heat is generated during the process causing considerable heating of the conduit or pipe
Solution Approach 1:
The patent replaces the UV light activation system with a thermal curing system. Instead of using UV light that generates excessive heat as a byproduct, the invention directly applies controlled thermal energy to cure the resin. This eliminates the unwanted heat generation problem while still achieving reliable resin activation and curing.
Solution Approach 2:
The patent changes the activation parameter from UV light exposure to controlled temperature application. By directly controlling the temperature during curing, the process avoids the excessive heat generation that occurs with high-intensity UV light sources, preventing distortion and damage to the conduit or pipe.
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 achieves reliable and uniform curing with minimal energy input, preventing overheating and distortion, while maintaining the structural integrity of the pipe and lining hose.
Implementation Method 1
The resin can be specifically heated via the magnetic particles by applying an alternating magnetic field to it
Implementation Method 2
The resin can be specifically heated via the magnetic particles by applying an alternating magnetic field to it
Implementation Method 3
The alternating magnetic field can reach the resin in the fabric or nonwoven layer of the lining hose much better than the conventionally used UV radiation. The alternating magnetic field penetrates insulating material without significant absorption.
Data Source
AI summary
The invention relates to a lining hose (1) for trenchless renovation of a conduit or pipe (2) laid underground, having at least one fabric or nonwoven layer (5) which is impregnated or saturated with a curable liquid resin. The object of the invention is to provide an approach for trenchless renovation of conduits or pipes, said approach being improved in comparison to the prior art, in particular a more energy-efficient and inexpensive approach. The invention achieves this object in that the resin can be thermally cured and contains magnetic nanoparticles. The resin that contains nanoparticles can be converted into a thermosetting plastic by applying an alternating magnetic field. The invention also relates to a corresponding curing device with a magnetic field generator (13) and to a system and a method for trenchless renovation of conduits or pipes.