Double-plane-wall plastic steel winding pipe fitting of H-shaped structure

Abstract

The invention discloses a double-plane-wall plastic steel winding pipe fitting of an H-shaped structure. The pipe fitting comprises an inner wall layer and an outer wall layer. The inner wall layer comprises a high-density polyethylene composite layer, a steel structure and an inner wall weld joint, wherein the steel structure and the inner wall weld joint are wrapped in the high-density polyethylene composite layer. The outer wall layer comprises an outer plane wall layer, a steel structure and an outer wall weld joint, wherein the steel structure and the outer wall weld joint are wrapped in the plane wall layer. A welding overlapping edge is arranged on the outer plane wall layer. The inner wall weld joint arranged in the inner wall layer and the outer wall weld joint arranged in the outer plane wall layer are connected through the welding overlapping edge. By the adoption of the double-plane-wall plastic steel winding pipe fitting of the H-shaped structure, the situation that pipes are damaged easily in the conveying process is avoided, the pipes can be welded directly, by means of the double-plane-wall structure, the joint tensile strength of the pipes is effectively improved, the problem of pipe breakage caused by low tensile strength of the pipes is solved, the ring rigidity of the pipes is ensured, and the product quality is ensured. The pipe fitting has the advantages of being simple in structure, convenient to use and high in practicality.

Description

technical field [0001] The invention relates to the technical field of plastic-steel winding pipe processing, in particular to a plastic-steel winding pipe fitting with a double-flat wall I-shaped structure. Background technique [0002] At present, the plastic-steel winding pipe is made of steel-plastic composite special-shaped strips that are spirally wound and welded. The inner wall is smooth and flat. It can be widely used in municipal drainage, long-distance low-pressure water delivery, mine and chemical drainage, farmland water conservancy irrigation, ventilation pipes, sewage treatment plants and other key projects. It is of great significance to save energy, reduce pollution and protect the environment. At present, the plastic-steel winding drainage pipe strip on the market passes through a special extruder, and the steel strip and molten polyethylene are compounded together through a special composite mold, and then shaped by a shaping die, and then cooled to form ...

AI Technical Summary

Problems solved by technology

Therefore, the wall pipe of the existing plastic-steel winding pipe structure usually includes the pipe wall and the reinforcing ribs arranged helically along the outer surface of the pipe wall. Due to the corrugated shape of the outer wall, such as figure 1 As shown, the reinforcing ribs are generally made of steel strips, and the shape of the steel strips is set as a "⊥"-shaped skeleton structure, so that the outer high-density polyethylene layer sometimes cannot completely cover the skeleton structure of the reinforcing ribs, resulting in the formation of exposed reinforcing ribs , which reduces the product ring stiffness

At the same time, since the existing pipes are transported by using a large tube with a small tube in the transport process, the outer structure is easily damaged during the transport process.

Due to the existence of exposed steel strips caused by uneven coating of steel strips or damaged pipes during transportation, loading and unloading, and rusting, the ring stiffness will fail, which will affect product quality and cause users to have extremely adverse effects on the normal use of this type of product.

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