Composite pipe for compressed air energy storage

By employing a corrosion-resistant alloy section and a composite connection section in the compressed air energy storage pipe, combined with the sintering of the enamel layer, the problems of low connection strength of composite pipes and limited application of enamel layers are solved, thus realizing a high-strength, low-cost corrosion-resistant pipeline.

CN121408534BActive Publication Date: 2026-07-21JIANGSU YULONG TAIXI NEW MATERIAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU YULONG TAIXI NEW MATERIAL TECH CO LTD
Filing Date
2025-12-26
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing protection technologies for compressed air energy storage pipelines suffer from high costs, low connection strength, and poor corrosion resistance. In particular, the application of enamel coatings is limited in high-salt-concentration environments, and existing coatings lack reliability under temperature and pressure cycling.

Method used

By adopting a design that combines corrosion-resistant alloy sections with composite connecting sections, and through welding and threaded connections, combined with the sintering of the enamel layer on the inner wall, a composite pipe structure is formed, which enhances the connection strength between the inner and outer layers. Furthermore, by utilizing the corrosion resistance of the enamel layer, the application problem of the enamel layer in the field of conveying pipes is solved.

Benefits of technology

The composite pipe has improved connection strength and wear resistance, reduced costs, and the enamel layer has good resistance to acid, alkali and chloride ions, which can effectively prevent corrosion and wear, and meet the technical requirements of compressed air energy storage pipes.

✦ Generated by Eureka AI based on patent content.

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    Figure CN121408534B_ABST
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Abstract

The application discloses a composite pipe for compressed air energy storage, which comprises a base pipe, a lining pipe, an enamel layer, a brazing filler layer, alloy pipe sections and composite connecting sections, the lining pipe is located in the base pipe, the brazing filler layer is between the base pipe and the lining pipe and fills the gap between the base pipe and the lining pipe, and the enamel layer is sintered on the inner wall of the lining pipe; two alloy pipe sections are respectively located at two ends of the lining pipe, and two composite connecting sections are respectively located at two ends of the base pipe; the alloy pipe sections and the lining pipe are connected into an integrated whole through welding, and the composite connecting sections and the base pipe are connected into an integrated whole through welding; the outer wall of the alloy pipe section is provided with external threads, the inner wall of the composite connecting section is provided with internal threads, the internal threads and the external threads are matched, and the alloy pipe sections and the composite connecting sections are connected through threads. The application solves the problem of how to improve the connecting strength between the inner and outer layers of the pipe in the prior art, and realizes the application of the enamel layer in the high-strength conveying pipe protection field.
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