Electrofusion of pipe coatings
DE602018092427T2Active Publication Date: 2026-07-15ACERGY FRANCE
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Patent Information
- Application Number
- DE602018092427
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2017-12-19
- Filing Date
- 2018-12-17
- Publication Date
- 2026-07-15
- Estimated Expiration
- 2038-12-17
AI Technical Summary
Technical Problem
Existing methods for joining polymer liners in pipelines face challenges such as damage from welding heat, leak paths from electrical connections, and high power consumption in electromagnetic induction, particularly in closed-bevel automatic welding techniques.
Method used
An induction coil is used inside the pipe to generate localized heat at the interface between liner sections, moving circumferentially to fuse the polymer material without external electrical connections, using a drive system and alignment sensors for precise positioning.
Benefits of technology
This method efficiently fuses polymer liners within pipelines, reducing power consumption and avoiding leak paths, while maintaining a continuous corrosion-resistant surface, suitable for closed-bevel welding.
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