CN204493924U - Steel wire wound reinforced plastic composite pipe - Google Patents

Abstract

The utility model provides a steel wire winding reinforced plastic composite pipe, including the high density polyethylene inlayer, outside the high density polyethylene inlayer, from inside to outside in proper order the cladding have reinforcing unit, the netted winding layer of steel wire and high density polyethylene skin, reinforcing unit number is 2 to 6, the reinforcing unit includes the netted winding layer of steel wire and nylon resin weaving layer. The utility model has the advantages of simple and reasonable structure, a great deal of problem of prior art has been solved, and this steel wire winding reinforced plastic composite pipe material superior performance, rigidity are good, withstand voltage, anti-blasting, corrosion resistance are good.

Description

Steel wire wound reinforced plastic composite pipe

technical field

The utility model relates to composite pipe technology, in particular to a steel wire winding reinforced plastic composite pipe.

Background technique

With the progress of society, the acceleration of urbanization and the rapid improvement of the level of modern industrialization, the pipeline industry has developed rapidly. Due to the diversity and complexity of the types, properties and conditions of the medium transported by the pipeline, the requirements for the pipeline are getting higher and higher. Metal pipes are usually used in an environment where the outer wall is in contact with soil or air and the inside is in contact with water or other corrosive liquids. After a period of use, it is easy to corrode, which will cause the effective wall thickness of the pipe to decrease and the mechanical strength to weaken, resulting in the final failure of the pipe. Its use The service life is short, and the project maintenance cost is high. Plastic pipes have the advantages of light weight, corrosion resistance, easy installation, small water flow resistance, and low cost, and are more and more widely used in water supply and drainage pipeline projects. However, traditional plastic pipes are generally pipes with relatively small diameters, generally about 500mm. Due to the small diameter, they are not suitable for water supply and drainage pipes.

In recent years, as the demand for pressure pipelines such as long-distance pipelines and urban gas pipelines has increased significantly, a brand-new steel-plastic composite pipe-polyethylene steel wire skeleton reinforced plastic composite pipe has emerged as the times require. It is an ordinary plastic pipe or It is an ideal substitute product for metal pipes, and has application prospects in fields such as oil and gas fields, electric power engineering, chemical industry, water supply and drainage, etc. The steel wire-wound reinforced plastic composite pipe in the prior art is based on thermoplastic high-density polyethylene, and the network skeleton formed by high-strength steel wires at an inclination angle is used as a reinforcement, and the steel wires and plastics are bonded by high-performance resins. steel-plastic composite structure. However, only using the network skeleton formed by a single layer of steel wire as a reinforcement, the composite pipe is prone to circumferential cracking, has poor wear resistance, and the rigidity and pressure resistance of the pipe are not ideal.

Utility model content

The purpose of this utility model is to propose a steel wire-wound reinforced plastic composite pipe for the above-mentioned problems that the existing metal pipes are easy to corrode, plastic pipes are not suitable for water supply and drainage pipes, and the rigidity of the existing steel wire-wound reinforced plastic composite pipes is not ideal. , the steel wire-wound reinforced plastic composite pipe has superior performance, good rigidity, pressure resistance, blast resistance and corrosion resistance.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

A steel wire wound reinforced plastic composite pipe, comprising an inner layer of high-density polyethylene, outside the inner layer of high-density polyethylene, coated with a reinforcing unit, a steel wire mesh winding layer and an outer layer of high-density polyethylene in sequence from the inside to the outside , the number of the reinforcement unit is 2 to 6, and the reinforcement unit includes a steel wire mesh winding layer and a nylon resin braided layer.

Further, there are three enhancing units.

Further, the inner layer of the reinforcement unit is a steel mesh winding layer, and the outer layer is a nylon resin braided layer.

Further, the outer diameter of the steel wire wound reinforced plastic composite pipe is 1000 to 3000mm.

Further, the inner diameter of the steel wire wound reinforced plastic composite pipe is 500 to 1500mm.

Further, the pipe body of the steel wire wound reinforced plastic composite pipe is a straight pipe or a bent pipe.

Further, the steel wire wrapping layer is formed of mesh wound steel wires.

Further, the steel wire is glass steel wire and/or carbon steel wire.

The steel wire winding reinforced plastic composite pipe of the utility model has a simple and reasonable structure, and has the following advantages compared with the prior art:

The beneficial effect of the utility model is that the high-density polyethylene is used as the matrix, the high-strength steel wire mesh winding layer and the nylon resin braided layer are used as the reinforcement unit, and the number of reinforcement units is multiple. This unique structure makes it integrated The advantages of metal pipes and plastic pipes are combined. Multiple reinforcing units can increase the rigidity, compression resistance and wear resistance of the pipes. The pipes are not prone to circumferential cracking. Using high-density polyethylene as the inner and outer layers of the pipe can Increase the corrosion resistance and heat resistance of the pipe, making the pipe hygienic and pollution-free. At the same time, the steel wire-wound reinforced plastic composite pipe provided in this embodiment also has the advantages of blast resistance and long service life, which reduces maintenance costs and potential safety hazards. The pipe material of the utility model has a large diameter, and the utility model is not only applicable to the field of water supply and drainage, but also widely used in fields such as oil and gas fields, electric power engineering, and chemical industry. The application prospect is very broad.

Description of drawings

Fig. 1 is a cross-sectional schematic diagram of a steel wire-wound reinforced plastic composite pipe of the present invention;

The technical features indicated by the reference numerals in the figure are:

1. Steel wire winding reinforced plastic composite pipe; 101. High-density polyethylene inner layer; 102. The first steel wire mesh winding layer; 103. The first nylon resin braided layer; 104. The second steel wire mesh winding layer; 105. The first Two nylon resin braided layers; 106, the third steel wire mesh winding layer; 107, the third nylon resin braided layer; 108, the fourth steel wire mesh winding layer; 109, the outer layer of high density polyethylene.

Detailed ways

The utility model is further described below in conjunction with embodiment:

Example 1

Fig. 1 is a schematic cross-sectional view of a steel wire-wound reinforced plastic composite pipe of the present invention.

This embodiment discloses a steel wire winding reinforced plastic composite pipe 1, the number of reinforcement units is 3, the inner layer of the reinforcement unit is a steel mesh winding layer, and the outer layer is a nylon resin braided layer. As shown in Figure 1, it includes a high-density polyethylene inner layer 101, and the outside of the high-density polyethylene inner layer 101 is covered with a first steel wire mesh winding layer 102 and a first nylon resin braided layer 103 in sequence from the inside to the outside. , the second steel wire mesh winding layer 104, the second nylon resin braided layer 105, the third steel wire mesh winding layer 106, the third nylon resin braided layer 107, the fourth steel wire mesh winding layer 108 and the outer layer of high density polyethylene 109.

In the above solution, the outer diameter of the steel wire wound reinforced plastic composite pipe is 1000 to 3000 mm. In this embodiment, the inner diameter of the steel wire-wound reinforced plastic composite pipe is 500 to 1500mm, and the pipe body of the composite pipe can be designed in the shape of a straight pipe or a curved pipe, and the steel wire is a glass fiber reinforced plastic wire. The steel wire mesh-wound layer is formed of mesh-wound steel wires.

Among them, high-density polyethylene (High Density Polyethylene, referred to as "HDPE") is a thermoplastic resin with high crystallinity and non-polarity. High-density polyethylene is non-toxic, tasteless, and odorless white particles with a melting point of about 130°C and a relative density of 0.941-0.960g/cm3. It has good heat resistance and cold resistance, good chemical stability, high rigidity and toughness, and good mechanical strength. Dielectric properties, environmental stress cracking resistance is also good. The melting temperature ranges from 120 to 160°C. For materials with larger molecules, the melting temperature ranges from 200 to 250°C. Wear resistance, electrical insulation, toughness and cold resistance are good. Good chemical stability, insoluble in any organic solvent at room temperature, resistant to acid, alkali and various salts.

The pipe provided in this example is a brand-new composite pipe, with high-density polyethylene as the matrix, high-strength steel wire mesh winding layer and nylon resin braided layer as the reinforcement unit, and the number of reinforcement units is three, which is Nine-layer composite pipe structure, this unique structure makes it integrate the advantages of metal pipes and plastic pipes, multiple reinforcing units can increase the rigidity, compression resistance, and wear resistance of the pipes, and the pipes are not prone to circumferential cracking. Using high-density polyethylene as the inner and outer layers of the pipe can increase the corrosion resistance and heat resistance of the pipe, making the pipe hygienic and pollution-free. At the same time, the steel wire-wound reinforced plastic composite pipe provided in this embodiment also has the advantages of blast resistance and long service life. Compared with the pipe diameter of the prior art, which is generally about 500mm, the pipe material of the utility model has a large diameter. The utility model can not only be applied to the field of water supply and drainage, but also can be widely used in fields such as oil and gas fields, electric power engineering, and chemical industry. The application prospect is very broad.

The utility model is not limited to the steel wire-wound reinforced plastic composite pipes described in the above embodiments, and the change of the structure of the steel wire mesh winding layer and the thickness of each layer are all within the scope of protection of the utility model.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the various embodiments of the present invention Scope of technical solutions.

Claims (8)

1. A steel wire wound reinforced plastic composite pipe, characterized in that it comprises a high-density polyethylene inner layer, outside the high-density polyethylene inner layer, from the inside to the outside, it is coated with a reinforcing unit, a steel wire mesh winding layer and In the outer layer of high-density polyethylene, the number of the reinforcement units is 2 to 6, and the reinforcement units include a steel mesh winding layer and a nylon resin braiding layer. 2. The steel wire wound reinforced plastic composite pipe according to claim 1, characterized in that there are three reinforcing units. 3. The steel wire wound reinforced plastic composite pipe according to claim 1 or 2, characterized in that the inner layer of the reinforcement unit is a steel wire mesh winding layer, and the outer layer is a nylon resin braided layer. 4 . The steel wire wound reinforced plastic composite pipe according to claim 1 , wherein the outer diameter of the steel wire wound reinforced plastic composite pipe is 1000 to 3000 mm. 5. The steel wire wound reinforced plastic composite pipe according to claim 1 or 4, characterized in that the inner diameter of the steel wire wound reinforced plastic composite pipe is 500 to 1500 mm. 6 . The steel wire wound reinforced plastic composite pipe according to claim 1 , wherein the pipe body of the steel wire wound reinforced plastic composite pipe is a straight pipe or a curved pipe. 7 . The steel wire wound reinforced plastic composite pipe according to claim 1 , characterized in that, the steel wire mesh wound layer is formed by mesh wound steel wires. 8. The steel wire wound reinforced plastic composite pipe according to claim 1 or 7, wherein the steel wire is glass steel wire and/or carbon steel wire.