A kind of anti-corrosion and heat-insulating steel pipe

By opening holes in the flange of the anti-corrosion and insulation steel pipe, passing through the injection hose, and communicating with the injection mechanism at the outer end of the injection hose, the problem of uneven foaming density of the existing insulation pipe is solved, and the uniform foaming density in the gap between the inner and outer pipes is achieved and the insulation effect is improved.

CN222717795UActive Publication Date: 2025-04-04HARBIN LIANXIN THERMAL INSULATION ENG CO LTD
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Patent Information

Application Number
CN202421638446.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-11
Publication Date
2025-04-04
Estimated Expiration
2034-07-11

AI Technical Summary

Technical Problem

When the existing insulation pipe is injected with foaming agent, due to the fixed glue injection point and the fast curing speed of the foaming agent, the foaming density near the liquid injection point and the edge of the insulation pipe is uneven.

Method used

An anti-corrosion and thermal insulation steel pipe is designed. By opening a hole in the flange, it passes through the injection hose, and communicates with the injection mechanism at the outer end of the injection hose. The injection hose is located at the upper part of the insulation hose, with the rubber outlet facing downwards, and the rubber outlet outlet is evenly distributed to ensure that the foaming agent is evenly injected in the gap between the inner and outer tubes.

Benefits of technology

The uniform foam density in the gap between the inner and outer tubes is achieved, the insulation effect is enhanced, and the insulation effect at the support disc is strengthened by filling the foaming agent in the communication hole of the supporting disc.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model relates to the field of thermal insulation pipes, in particular to an anti-corrosion thermal insulation steel pipe. Due to the fact that the glue injection point is fixed and the foaming agent solidifies quickly, a technical problem of uneven foaming density near the injection point and the edge of the thermal insulation pipe is caused. A hole is opened on the flange between the outer pipe and the inner pipe, and glue injection pipes are respectively passed through the holes of the flanges at both ends. The sealing ends of the two glue injection pipes are connected to a supporting disc, and the outer ends of the glue injection pipes can be connected to a glue injection mechanism. When connected, the glue injection pipes are located at the upper part of the thermal insulation pipe. When the glue injection pipes are located at the upper part, the glue outlets on the pipe wall face downward, and a plurality of glue outlets are evenly distributed on the glue injection pipes. The foaming agent is guided by the glue injection pipes to be sprayed from the evenly distributed glue outlets at the same time, so that the gap between the inner and outer pipes is injected with glue synchronously by the plurality of glue outlets, the foaming density in the gap is uniform, and the foaming agent is filled in the connecting hole of the supporting disc, thereby enhancing the thermal insulation effect at the supporting disc.
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