Translational Pipe Cutting with Dented Support for Safer Lifting
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Solution Overview
Problem
Current cutting techniques for tubular structures in the petrochemical industry, such as abrasive cutting and diamond wire cutting, are time-consuming, and the adoption of translational cutting technology, while faster, requires time-consuming pinning to prevent inner pipes from falling during lifting.
Innovation Solution
A method utilizing a cutting tool with a non-rotatable cutting element and a reaction member for translational cutting, where a partial cutting movement creates a dented region, allowing for subsequent full cutting without complete severance at the first location, enabling safer lifting and handling of tubular structures without inner pipes falling out.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If translational cutting technology is used to cut tubular structures faster, then cutting time is reduced, but inner pipes may fall out during lifting of cut parts
Solution Approach 1:
A pinning element is inserted through the tubular structure before the cutting operation begins. This preliminary action secures the inner pipes in place, preventing them from falling out during subsequent lifting operations after the cut is made. The pinning element is positioned in advance to address the stability issue before the fast cutting process completes.
Solution Approach 2:
The pinning element acts as an intermediary component between the inner pipes and the outer tubular structure. It mediates the connection, holding the inner pipes securely within the outer structure during the cutting and lifting process, thus solving the stability problem without interfering with the fast cutting capability.
2Reliability
If pinning technology is applied to prevent inner pipes from falling out, then pipe stability during lifting is improved, but cutting time increases
Solution Approach 1:
The pinning element is inserted through the tubular structure before the cutting operation begins. This preliminary action secures the inner pipes in place, preventing them from falling out during subsequent lifting operations after the cut is made. The pinning element is positioned in advance to address the stability issue before the fast cutting process completes.
Solution Approach 2:
The pinning element acts as an intermediary component between the inner pipes and the outer tubular structure. It mediates the connection, holding the inner pipes securely within the outer structure during the cutting and lifting process, thus solving the stability problem without interfering with the fast cutting capability.
3Productivity
If complete severance is made at the first cutting location, then cutting efficiency is improved, but inner pipes fall out during lifting
Solution Approach 1:
A pinning element is inserted through the tubular structure before the cutting operation begins. This preliminary action secures the inner pipes in place, preventing them from falling out during subsequent lifting operations after the cut is made. The pinning element is positioned in advance to address the stability issue before the fast cutting process completes.
Solution Approach 2:
The pinning element acts as an intermediary component between the inner pipes and the outer tubular structure. It mediates the connection, holding the inner pipes securely within the outer structure during the cutting and lifting process, thus solving the stability problem without interfering with the fast cutting capability.
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 significantly reduces cutting time, allows for safer handling and lifting of tubular structures by forming a dented region that can be gripped by a slips device, and facilitates faster severance of tubular structures without the need for time-consuming pinning processes.
Implementation Method 1
a non-rotatable cutting element and a reaction member opposite to the non-rotatable cutting element, the cutting tool being configured for carrying out a translational cutting movement through the tubular structure
Implementation Method 2
squeezing the tubular structure at the first position by activating a partial translational cutting movement of the non-rotatable cutting element to obtain a dented region in the tubular structure
Data Source
AI summary
A method is for cutting a tubular structure in the petrochemical industry, using a cutting tool having a non-rotatable cutting element and a reaction member opposite to the non-rotatable cutting element. The cutting tool is further configured for carrying out a translational cutting movement through the tubular structure. The method comprises: a) positioning the cutting tool in a first position exterior to the tubular structure; b) squeezing the tubular structure at the first position by activating a partial translational cutting movement of the non-rotatable cutting element to obtain a dented region in the tubular structure; c) positioning the cutting tool in a second position exterior to the tubular structure, wherein the second position is displaced over a predefined distance compared to the first position, and d) cutting the tubular structure at the second position (P2) by activating a full translational cutting movement of the non-rotatable cutting element through the tubular structure.