Pipeline Liner Pull-In with Electromagnetic Release Coupling
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Solution Overview
Problem
Existing devices for rehabilitating pipes by inserting a tubular lining material coated with resin struggle with separating from the lining material once installed, leading to inefficiencies and prolonged curing times.
Innovation Solution
The device incorporates an electromagnet on its second end piece, which can be energized to magnetically couple and decouple from a metallic element attached to the lining material, allowing for remote separation from the pipe lining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the device is permanently attached to the lining material for structural support, then the structural stability is improved, but the device cannot be separated and removed after installation
Solution Approach 1:
The attachment mechanism transitions from static permanent attachment to dynamic controllable attachment. The electromagnet allows the device to be attached when energized and detached when de-energized, providing both structural stability during installation and ease of removal afterward.
Solution Approach 2:
The magnetic field strength parameter is changed by controlling the electromagnet power supply. When power is supplied, the magnetic field provides strong attachment force for structural stability; when power is cut, the magnetic field disappears allowing easy separation.
2Manufacturing precision
If the device remains attached to the lining material during curing, then the positioning accuracy is improved, but the curing time is prolonged due to inability to separate and reposition
Solution Approach 1:
The dynamic attachment capability allows the device to be quickly attached and detached without compromising positioning accuracy. The electromagnet provides immediate attachment force when needed and rapid release when repositioning is required, reducing overall curing time.
Solution Approach 2:
The device can be preliminarily attached to check positioning before final curing begins. If positioning is incorrect, the device can be quickly detached and repositioned using the electromagnet, avoiding wasted curing time on misaligned installations.
3Reliability
If the electromagnet is continuously energized to maintain attachment, then the attachment reliability is improved, but the energy consumption increases
Solution Approach 1:
Instead of continuous energization, the electromagnet is energized periodically only when attachment or detachment is required. This intermittent operation maintains attachment reliability when needed while significantly reducing overall energy consumption during the curing process.
Solution Approach 2:
The magnetic attachment system provides self-holding capability when energized, requiring no continuous control input. Once attached, the electromagnet maintains the attachment automatically, allowing energy to be cut during phases where attachment is not required, reducing energy consumption while maintaining reliability when active.
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 solution enables the device to be easily pulled in and separated from the pipe lining material, facilitating faster installation and curing processes, particularly when combined with UV radiation for resin curing.
Implementation Method 1
an electromagnet is provided on the second end piece, in particular on the free end face thereof, said electromagnet being coupled to the power supply line and being able to be energized via the latter. By this means, a metallic element which is fixed to the liner can then be coupled releasably to the device.
Data Source
AI summary
The invention relates to a device (10) for pulling in, and in particular curing, a pipeline liner (40), the device comprising a housing (11) having a first end piece (12) and a second end piece (14) opposite one another, a housing body (16) extending between the end pieces (12, 14), and a power supply line connected to the first end piece (12), in which device an electromagnet (45) which is coupled to the power supply line and can be energized thereby is provided on the second end piece (14), in particular on the free end face thereof.