Connector and connecting method for basalt polyethylene composite pipe

By designing induction heating connectors and metal connecting teeth, the problems of connection leakage and construction difficulty of basalt fiber polyethylene composite pipes are solved, achieving efficient and safe pipe connection, suitable for high-pressure environments, and maintaining the flow area and smooth inner wall of the pipe.

CN116608332BActive Publication Date: 2026-06-26MIANYANG LIANGGU CONSTR ENG CO LTD
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Patent Information

Application Number
CN202310833207.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-07-07
Publication Date
2026-06-26
Estimated Expiration
2043-07-07

AI Technical Summary

Technical Problem

Existing basalt fiber polyethylene composite pipe connection methods suffer from problems such as leakage, high construction difficulty, high cost, and low efficiency, especially in high-pressure environments where effective sealing and connection are difficult to achieve.

Method used

The connector is based on induction heating. The metal layer of the fastener and the polyethylene layer of the composite pipe are melted by the induction heating structure. Combined with the heat insulation layer and metal connecting teeth, a tight connection between the composite pipe and the fastener is achieved, ensuring that the inner wall of the pipe is smooth and has high strength and pressure resistance.

Benefits of technology

It enables rapid and reliable connection of basalt-polyethylene composite pipes, suitable for high-pressure and low-pressure environments, improves the strength and pressure resistance of the connection, solves the safety hazards of traditional connection methods, and maintains the flow area and smooth inner wall of the pipeline.

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Abstract

The application discloses a connecting piece and a connecting method based on basalt polyethylene composite pipes, relates to the field of pipelines, and comprises a fixing piece in a tubular structure and an induction heating structure. The fixing piece comprises, from outside to inside, a first polyethylene layer, a first metal layer and a second polyethylene layer. The two ends of the fixing piece are used for sleeving in the connecting ends of two basalt polyethylene composite pipes respectively, and the outer diameter of the fixing piece is greater than or equal to the inner diameters of the connecting ends of the two basalt polyethylene composite pipes. The induction heating structure is located outside the two basalt polyethylene composite pipes and is used for heating the first metal layer. After the structure is connected, the basalt polyethylene composite pipes have better strength, density and pressure resistance. Meanwhile, the inner walls of the basalt polyethylene composite pipes are kept smooth, and the flow area is not affected.
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