Pipe Liner Removal Fixture for Pre-Cut Pipe Separation
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Solution Overview
Problem
Existing methods for cutting pipes with internal linings are inefficient as they require cutting both the pipe and the lining simultaneously, and the presence of a metallic intermediate layer complicates the process, making it difficult to separate the pipe from the lining before cutting.
Innovation Solution
A device featuring a standpipe with a bearing surface and pressure component that allows the pipe to slide over a support element, separating the pipe from the lining by applying pressure to one end, while the other end is supported on a bearing surface, using a rotatable pipe adapter for adaptability and locking mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a tool is used to cut the pipe section, then the pipe can be cut to length, but the tool cannot cut the lining inside the pipe section because it is made of different material
Solution Approach 1:
The invention extracts the lining from the pipe section by pushing the pipe section through the lining using a pressure component, separating the two materials so they can be processed independently - the pipe can then be cut with appropriate tools without the lining interfering
Solution Approach 2:
The device segments the cutting process into two separate operations: first removing the lining from the pipe section, then cutting the pipe section. This segmentation allows each operation to use tools optimized for its specific material
2Productivity
If cutting is performed on the pipe section with lining present, then both pipe and lining must be cut simultaneously, but this becomes problematic when there is a metallic intermediate layer between the pipe section and the lining
Solution Approach 1:
The invention performs preliminary action by removing the lining from the pipe section before the cutting operation. The pressure component pushes the pipe section through the lining, and positioning devices ensure proper alignment, preparing the pipe section for subsequent cutting without the complicating presence of the lining and metallic intermediate layer
3Force
If force is applied to remove the lining, then the pipe section can be separated from the lining, but the force must be applied selectively to only the pipe end and not the lining end
Solution Approach 1:
The invention uses a standpipe with a pipe adapter as an intermediary support structure. The support surface at the first end and pressure surface at the second end create a mechanical system that directs force application precisely to the pipe section while the positioning devices prevent force from being applied to the lining, ensuring clean separation
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
Enables effective separation of the pipe from the lining before cutting, allowing for precise positioning and adaptation to various pipe diameters, ensuring accurate cutting without damaging the lining or pipe.
Implementation Method 1
the pipe section slides along the pipe lining and essentially over the support element
Data Source
Figure 1~3
Figure 4~8
AI summary
A device for removing a pipe lining from a pipe section, in which a first pipe lining end is arranged at a first pipe end, is characterized in that a support element comprises a support surface and a pressure component comprises a pressure surface, and that a positioning device for positioning the pipe section between the support surface and the pressure surface is designed such that, when the pressure component is actuated, the first pipe lining end is supported on the support surface and the pressure surface engages a second pipe end and, when pressurized, the pressure component pushes the pipe section over the support element.