Large-diameter feeding and drainage pipe provided with sacrificial anode and manufacturing method of large-diameter feeding and drainage pipe

Abstract

The invention discloses a large-diameter feeding and drainage pipe provided with a sacrificial anode and a manufacturing method of the large-diameter feeding and drainage pipe. The large-diameter feeding and drainage pipe comprises an inner-layer steel cylinder (1), an outer-layer concrete layer (2), a reinforcing structure (3), an outer-layer steel cylinder (4), a concrete filling structure (5) and the sacrificial anode (6), wherein the reinforcing structure (3) winds round and is welded and fixed on the outer side of the inner-layer steel cylinder (1); the outer side of the reinforcing structure (3) is sleeved with the outer-layer steel cylinder (4), and the outer-layer steel cylinder (4) is welded and fixedly connected with the reinforcing structure (3); the concrete filling structure (5) is located in a gap among the inner-layer steel cylinder(1), the reinforcing structure (3) and the outer-layer steel cylinder (4); the outer-layer concrete layer (2) is located on the outer side of the outer-layer steel cylinder (4); the sacrificial anode (6) is located in the outer-layer concrete layer (2). The large-diameter feeding and drainage pipe provided with the sacrificial anode is good in anti-corrosion effect, durable, simple in manufacturing process and capable of reducing the production cost while meeting requirements for the rigidity and the strength and has higher social and economic values.

Description

technical field [0001] The invention relates to the technical field of structural design and application of large-diameter water supply and drainage pipes, and in particular provides a large-diameter water supply and drainage pipe with a sacrificial anode and a preparation method thereof. Background technique [0002] With the continuous and rapid development of my country's economy, the scale of cities has expanded rapidly, and more and more cities have encountered difficulties in water supply and drainage. The construction of large-scale water transmission projects is urgent, and the use of pipelines to lay water pipelines is a necessary option. At present, the available pipelines include steel cylinders, concrete pipes, reinforced concrete pipes, and prestressed concrete pipes. Among them, the maximum nominal inner diameter of the concrete pipe without steel structure inside the pipe wall is only 600mm, which is only suitable for small supply and displacement application...

AI Technical Summary

Problems solved by technology

However, the length of steel at the interface is too short to be accurately implemented from the surface

In addition, the purpose of using pipes is to not damage the surface and underground infrastructure. Naturally, there are many restrictions on cathodic protection from the surface, so it is impossible to carry out cathodic protection construction from the surface.

Images