Steel wire enhanced bell and spigot composite plastic tube and fabrication process thereof

Abstract

The invention relates to a steel wire enhanced bell and spigot composite plastic tube and a fabrication process thereof. The steel wire enhanced bell and spigot composite plastic tube is prepared by mainly enhancing an inner bell and spigot and an outer bell and spigot, reasonably configuring each corresponding ratio parameter and adopting the fabrication process. The steel wire enhanced bell and spigot composite plastic tube comprises the inner bell and spigot, a bush, the outer bell and spigot, a sealing ring adapted to the outer bell and spigot, a conical tube, a round tube A, an arc tube, a round tube B and a steel wire sleeve mainly covering the outer wall of the arc tube, wherein the inner bell and spigot and the bush are arranged at one end of the tube wall, the outer bell and spigot and the sealing ring are arranged at the other end of the tube wall, and the conical tube, the round tube A, the arc tube, the round tube B and the steel wire sleeve are sequentially connected to the tube wall. The invention overcomes the defects that in the traditional PE (Polyethylene) tube, a reticular enhancement mode and a bidirectional winding enhancement mode are adopted at the external of the tube wall to cause the axial rigidity of the tube to be too strong and enable the axial flexibility performance at the bell and spigot to be lowered, thereby influencing the geological subsidence resistance performance of a pipeline network system; the connecting part of the bell and spigots is easy to strain to break, thereby enabling maintenance of a water, gas and liquid supply system to be difficult; fuel gas leaks to cause environmental pollution and the like. The invention is suitable for various water conveyance projects and connecting tubes of the water conveyance projects and is particularly suitable for enhancing bell and spigots of PE plastic tubes, PVC-U (Unplasticizied Polyvinyl Chloride) plastic tubes, PVC-M (High Impact Polyvinyl Chloride) plastic tubes and the like.

Description

technical field [0001] The invention relates to a steel wire-reinforced socket socket composite plastic pipe and a manufacturing process thereof. Background technique [0002] Existing PE pipe-polyethylene resin composite pipes used for water supply, gas supply and liquid supply. In order to improve the performance and service life of PE pipes, people adopt the method of strengthening the whole pipe, such as adopting mesh reinforcement and two-way winding reinforcement. The use of this reinforcement method has a certain effect on solving the axial rigidity of the PE pipe, but it brings about the following: first, because the axial rigidity is too strong, the axial flexibility of the socket is reduced, especially the anti-geological The sinking performance is poor, and the welds are easy to break, resulting in difficult maintenance of water supply, gas supply, and liquid supply systems, serious resource loss and environmental pollution caused by gas leakage; second: the two t...

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Problems solved by technology

[0002] Existing PE pipe-polyethylene resin composite pipes used for water supply, gas supply and liquid supply. In order to improve the performance and service life of PE pipes, people adopt the method of strengthening the whole pipe, such as adopting mesh reinforcement and two-way winding reinforcement. The use of this reinforcement method has a certain effect on solving the axial rigidity of the PE pipe, but it brings about the following: first, because the axial rigidity is too strong, the axial flexibility of the socket is reduced, especially the anti-geological The sinking performance is poor, and the welds are easy to break, resulting in difficult maintenance of water supply, gas supply, and liquid supply systems, serious resource loss and environmental pollution caused by gas leakage; second: the two types of mesh reinforcement and two-way winding reinforcement The sockets of the pipes are all connected by electrofusion welding. Due to the high temperature during welding, the thermal expansion coefficients of the two materials (steel wire and plastic) are different and separation occurs, and the sockets cannot meet the connection quality requirements; third: this The part of the mesh reinforced tube is half of the tube wall thickness, the manufacturing process is complicated, and its production cost and raw material cost are high: Fourth: because the steel wire is wound on the whole tube, the reinforced tube Installation and maintenance are particularly difficult, and the maintenance cost of the system is relatively high

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