Metal corrugated pipe type expansion joint protection structure

By designing multiple sets of limiting components and cylindrical protective covers on metal corrugated expansion joints, the problem of easy deformation of the expansion joints during transportation and installation is solved, and better protective effects and simplified transportation and installation processes are achieved.

CN222669320UActive Publication Date: 2025-03-25CHINA ERZHONG GRP DEYANG HEAVY IND
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Patent Information

Application Number
CN202420932169.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-30
Publication Date
2025-03-25
Estimated Expiration
2034-04-30

AI Technical Summary

Technical Problem

The existing metal corrugated tube expansion joints are easily deformed due to scratches or bumps during transportation and installation, resulting in scrapping, and the existing protective structures are not well protected during transportation and hoisting.

Method used

A metal corrugated expansion joint protection structure is designed. By setting up multiple sets of limiting components and a protective cover with a cylindrical structure, the protective cover is equipped with reinforcement ribs and support planes, and the support plane positions the entire expansion joint for easy transportation and installation.

Benefits of technology

Effectively prevent the bellows from being scratched or deformed by collision. The protective cover can carry the weight of the entire expansion joint without deformation, simplifying the transportation and installation process and saving manpower.

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Abstract

The utility model belongs to the technical field of gas turbine pipeline expansion joints, and particularly relates to a metal corrugated pipe type expansion joint protection structure which comprises a plurality of sets of limiting assemblies which are evenly distributed in the circumferential direction of an expansion joint body. The limiting assembly comprises supporting end plates arranged at the two ends of the expansion joint body correspondingly, and the supporting end plates located at the two ends of the expansion joint body are fixedly connected through a pull rod. The expansion joint further comprises a protective cover which is fixedly installed on the pull rod and arranged on the expansion joint body in a sleeving mode and is of a cylindrical structure. A corrugated pipe on the expansion joint body is located in a protective cavity of the protective cover. Reinforcing ribs are arranged on the protective cover; the protective cover protrudes out of the peripheral face of the supporting end plate in the radial direction of the expansion joint body, and a gap is formed between the corrugated pipe and the inner wall of the protective cover. The corrugated pipe is protected by arranging the protective cover, the protective cover replaces a supporting end plate to support the expansion joint and erect the corrugated pipe, the corrugated pipe is prevented from being deformed due to the fact that the corrugated pipe bears the weight of the whole expansion joint, the structure is simple, manpower is saved, and transportation and installation are convenient.
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