Coated Pipe End Protection That Preserves Collar Roughness
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Solution Overview
Problem
Current protective systems for coated pipes fail to provide comprehensive protection against corrosion and mechanical damage to the ends/bevel, collar, and internal surfaces, leading to recurring losses, increased costs, and environmental impacts during storage, transport, and use in the field.
Innovation Solution
A protective system comprising a cup, spacer, external coating, external ring, and cap, which are integrated into the pipe coating process to protect the ends/bevel, collar, and internal surfaces, using the external coating itself as a protective mechanism and maintaining the necessary roughness profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional protective systems are used for pipe ends, then mechanical protection is provided, but corrosion protection and complete coverage are not achieved
Solution Approach 1:
The protective system is divided into multiple functional components: a cup for end protection, a collar for lateral protection, and an internal plug for interior protection. Each component addresses specific vulnerability zones, providing comprehensive coverage that conventional single-component systems cannot achieve.
Solution Approach 2:
The protective system serves multiple functions simultaneously: mechanical impact protection, corrosion prevention, water accumulation blocking, and surface roughness preservation. This multi-functionality eliminates the need for separate protective measures for each hazard.
2Object-affected harmful factors
If sandblasting is performed in the field to restore collar surface, then corrosion is removed, but time and cost increase
Solution Approach 1:
The protective collar is applied at the factory before shipping, preserving the sandblasted surface roughness profile in advance. This preliminary protection eliminates the need for time-consuming field sandblasting to restore the collar surface, as the protective system maintains the surface integrity throughout transport and storage.
3Object-affected harmful factors
If protective films are used during coating, then collar protection is provided, but residue is left on the surface
Solution Approach 1:
The protective collar uses a disposable paper-based material that is intentionally designed to be consumed during the coating process. The collar is placed on the pipe before coating, and the coating material penetrates through it. After coating, the collar is removed and discarded, leaving no residue on the sandblasted surface, thus maintaining the required roughness profile.
4Reliability
If comprehensive protection is implemented, then all pipe areas are protected, but device complexity increases
Solution Approach 1:
The protective system is divided into multiple functional components: a cup for end protection, a collar for lateral protection, and an internal plug for interior protection. Each component addresses specific vulnerability zones, providing comprehensive coverage that conventional single-component systems cannot achieve.
Data Source
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AI summary
This invention encompasses a system and a method used in the petrochemical and mechanical engineering area, more specifically in the area of protecting pipes or similarly shaped objects against external or internal damage or wear, which comprises a protective system for the ends and the inside of coated pipes, using the coating itself and other additional devices. The system is comprised of a cup (1), spacer (2), coating (3), external ring (4), and cap (5) used in the production line of the pipe-coating process, using the external coating itself, preventing corrosion and mechanical damage at the ends/bevel, in the sandblasted area of the collar and internal surface, from storage and transport to the location where it will be used, and welding in the field or on the vessel.