FRPP hollow wall winding pipe

Abstract

The utility model relates to the field of FRPP pipes, in particular to an FRPP hollow wall winding pipe, which adopts the technical scheme that the FRPP hollow wall winding pipe comprises a pipe body, a plurality of hollow walls are arranged in the pipe body, plastic steel strips are fixedly mounted on the inner walls of the hollow walls, a plastic steel pipe is arranged between the plastic steel strips in every two adjacent hollow walls, and the plastic steel pipes are fixedly mounted on the inner walls of the hollow walls. An outer sheath is arranged on the surface of the pipeline body, an inner sheath is arranged on the inner wall of the pipeline body, and the pipeline has the advantages that the inner wall and the outer wall of the pipeline body are covered with the outer sheath and the inner sheath which are made of FRPP glass fiber reinforced polypropylene composite materials, so that the effect of improving the strength, abrasion resistance and corrosion resistance of the pipeline is achieved; due to the fact that the plastic steel pipes are arranged between the plastic steel strips, when the pipeline body is subjected to external force, the plastic steel strips deform and extrude the plastic steel pipes on the two sides, the plastic steel pipes are extruded to deform, impact force is diffused into the pipeline body in all directions, and the effect of protecting the parts, between the hollow walls, of the pipeline is achieved.

Description

Technical Field

[0001] The utility model relates to the field of FRPP pipes, in particular to a FRPP hollow wall winding pipe. Background Art

[0002] FRPP material is a glass fiber reinforced polypropylene composite material, which combines the advantages of polypropylene and glass fiber. FRPP material has good corrosion resistance, high strength, wear resistance, electrical insulation, light weight, thermal stability, and formability. FRPP material is widely used in industrial and civil fields, such as chemical pipelines, sewage treatment equipment, water treatment equipment, power equipment, automotive parts, etc. Its excellent corrosion resistance and high strength make it one of the preferred materials in many special environments.

[0003] The prior art has the following deficiencies: the existing hollow wall wrapped pipes include plastic + FRP glass fiber as the base material. The corrosion resistance, strength and rigidity of this type of pipe are not outstanding, and it cannot adapt well to some strong corrosion and high-pressure environments; and in order to further improve the rigidity and pressure resistance of the pipe, the existing hollow wall wrapped pipe will set a plastic-steel strip on the inner wall of the hollow wall of the pipe. When subjected to huge external force, the plastic-steel strip will deform and squeeze the inner wall of the hollow wall of the pipe on both sides. After long-term use, the plastic-steel strip will continuously squeeze the inner wall of the hollow wall, which is easy to cause penetration between the hollow walls. The penetration between the hollow walls will reduce the structural integrity and pressure-bearing capacity of the pipe, which may cause damage or rupture of the pipe in the long run, greatly reducing the service life of the hollow wall wrapped pipe.

[0004] Therefore, it is necessary to invent a FRPP hollow wall winding pipe. Utility Model Content

[0005] To this end, the utility model provides a FRPP hollow wall winding pipe, through a FRPP hollow wall winding pipe to solve a FRPP hollow wall winding pipe problem.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a FRPP hollow wall winding pipe, comprising a pipe body, a plurality of hollow walls arranged inside the pipe body, a plastic-steel strip fixedly installed on the inner wall of the hollow wall, a plastic-steel pipe is arranged between the plastic-steel strips in two adjacent hollow walls, the plastic-steel pipe is embedded and installed in the pipe body between the two adjacent hollow walls, an outer sheath is arranged on the surface of the pipe body, and an inner sheath is arranged on the inner wall of the pipe body.

[0007] Preferably, the outer sheath is made of FRPP glass fiber reinforced polypropylene composite material, and the outer sheath is wrapped around the outer wall of the pipe body by injection molding, extrusion or rotational molding.

[0008] Preferably, the inner sheath is made of FRPP glass fiber reinforced polypropylene composite material, and the inner sheath is attached to the inner wall of the pipe body by injection molding, extrusion or rotational molding.

[0009] Preferably, the hollow wall is an annular structure with a semicircular cross-section, and the hollow wall is arranged around the inner wall of the pipe body. Several of the hollow walls are evenly arranged along the pipe body, and a certain interval is provided between the several hollow walls.

[0010] Preferably, the plastic-steel strip is made of glass fiber reinforced plastic or carbon fiber reinforced plastic, and is manufactured by extrusion and injection molding. The plastic-steel strip is an annular structure with a semicircular arch cross-section, and protrusions are provided at both ends of the plastic-steel strip. The protrusions at both ends of the plastic-steel strip penetrate the inner wall of the hollow wall and are embedded in the pipe body.

[0011] Preferably, the plastic-steel pipe is made of glass fiber reinforced plastic or carbon fiber reinforced plastic, and is manufactured by an extrusion process. The plastic-steel pipe is an annular structure with an O-shaped cross-section. The plastic-steel pipe is embedded and installed between the protrusions of two adjacent plastic-steel strips, and the plastic-steel strips on both sides of the plastic-steel pipe are against both sides of the plastic-steel pipe.

[0012] Preferably, the pipe body is made by injection molding, extrusion or rotational molding.

[0013] The beneficial effects of the utility model are:

[0014] 1. The outer and inner sheaths of FRPP glass fiber reinforced polypropylene composite materials are covered on the inner and outer walls of the pipeline body to improve the strength, wear resistance and corrosion resistance of the pipeline;

[0015] 2. By arranging plastic-steel pipes between the plastic-steel strips, when the pipeline body is subjected to external force, the plastic-steel strips are deformed and squeeze the plastic-steel pipes on both sides. The plastic-steel pipes are deformed by the extrusion and dissipate the impact force to the inside of the pipeline body in all directions, so as to achieve the effect of protecting the pipeline parts between the hollow walls, avoiding penetration between the hollow walls, increasing the rigidity and pressure resistance of the pipeline, and extending the service life of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A front view of a FRPP hollow wall winding pipe provided by the utility model;

[0017] Figure 2 A schematic diagram of the structure of a FRPP hollow wall winding pipe provided by the utility model;

[0018] Figure 3A cross-sectional view of an outer sheath and an inner sheath of a FRPP hollow wall winding pipe provided by the utility model;

[0019] Figure 4 A cross-sectional view of a pipe body of a FRPP hollow wall winding pipe provided by the utility model.

[0020] In the figure: a pipe body 11, a hollow wall 12, an outer sheath 13, an inner sheath 14, a plastic-steel strip 15, and a plastic-steel pipe 16. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Example 1

[0023] like Figure 1 - Figure 4 As shown, a FRPP hollow wall winding pipe in the embodiment of the first aspect of the utility model includes a pipe body 11, a plurality of hollow walls 12 are arranged inside the pipe body 11, a plastic-steel strip 15 is fixedly installed on the inner wall of the hollow wall 12, a plastic-steel pipe 16 is arranged between the plastic-steel strips 15 in two adjacent hollow walls 12, and the plastic-steel pipe 16 is embedded and installed in the pipe body 11 between the two adjacent hollow walls 12, an outer sheath 13 is arranged on the surface of the pipe body 11, and an inner sheath 14 is arranged on the inner wall of the pipe body 11.

[0024] In the above embodiment, it should be noted that by arranging the plastic-steel pipe 16 between the plastic-steel strips 15, when the pipeline body 11 is subjected to external force, the plastic-steel strips 15 are deformed and squeeze the plastic-steel pipes 16 on both sides. The plastic-steel pipes 16 are deformed by the extrusion and dissipate the impact force to the inside of the pipeline body 11 in a direction, so as to achieve the effect of protecting the pipeline portion between the hollow walls 12, avoiding penetration between the hollow walls 12, increasing the rigidity and pressure resistance of the pipeline, and extending the service life of the pipeline.

[0025] Example 2

[0026] like Figure 1 - Figure 4 As shown, a FRPP hollow wall winding pipe includes all the contents of Example 1. In addition, the outer sheath 13 is made of FRPP glass fiber reinforced polypropylene composite material, and the outer sheath 13 is wrapped around the outer wall of the pipe body 11 by injection molding, extrusion or rotational molding. The inner sheath 14 is made of FRPP glass fiber reinforced polypropylene composite material, and the inner sheath 14 is attached to the inner wall of the pipe body 11 by injection molding, extrusion or rotational molding.

[0027] In the above embodiment, it should be noted that by covering the inner and outer walls of the pipeline body 11 with the outer sheath 13 and the inner sheath 14 made of FRPP glass fiber reinforced polypropylene composite material, the strength, wear resistance and corrosion resistance of the pipeline can be improved.

[0028] Example 3

[0029] like Figure 1 - Figure 4 As shown, a FRPP hollow wall winding pipe includes all the contents of Example 1. In addition, the hollow wall 12 is an annular structure with a semicircular cross-section. The hollow wall 12 is arranged around the inner wall of the pipe body 11. Several of the hollow walls 12 are evenly arranged along the pipe body 11. A certain interval is set between the several hollow walls 12. The pipe body 11 is made by injection molding, extrusion or rotational molding.

[0030] In the above embodiment, it should be noted that the pipe body 11 is made of plastic and FRP glass fiber material; the spacing between the hollow walls 12 is fixed, and the hollow walls 12 can enhance the structural strength of the pipe body 11, so that it can withstand the pressure of the internal medium and the load of the external environment. Especially under high pressure or complex working conditions, the hollow walls 12 can effectively support the pipe body 11 to prevent it from deformation or rupture.

[0031] Example 4

[0032] like Figure 1 - Figure 4 As shown, a FRPP hollow wall winding pipe includes all the contents of Example 1. In addition, the plastic-steel strip 15 is made of glass fiber reinforced plastic or carbon fiber reinforced plastic, and the plastic-steel strip 15 is manufactured by extrusion and injection molding. The plastic-steel strip 15 is an annular structure with a semicircular arch cross-section. Both ends of the plastic-steel strip 15 are provided with protrusions. The protrusions at both ends of the plastic-steel strip 15 penetrate the inner wall of the hollow wall 12 and are embedded in the pipe body 11. The plastic-steel pipe 16 is made of glass fiber reinforced plastic or carbon fiber reinforced plastic, and the plastic-steel pipe 16 is manufactured by extrusion. The plastic-steel pipe 16 is an annular structure with an O-shaped cross-section, and the plastic-steel pipe 16 is embedded and installed between the protrusions of two adjacent plastic-steel strips 15. The plastic-steel strips 15 on both sides of the plastic-steel pipe 16 are against the two sides of the plastic-steel pipe 16.

[0033] In the above embodiment, it should be noted that both the plastic-steel strip 15 and the plastic-steel pipe 16 have certain elasticity, and the plastic-steel strip 15 can well support the hollow wall 12 and enhance the structural strength of the pipe body 11 .

[0034] Working principle: When the pipeline body 11 is subjected to external force, the plastic-steel strip 15 is deformed and squeezes the plastic-steel pipes 16 on both sides. The plastic-steel pipes 16 are deformed by the extrusion and dissipate the impact force to the inside of the pipeline body 11 in all directions to protect the pipeline part between the hollow walls 12. At the same time, the inner and outer walls of the pipeline body 11 are covered with an outer sheath 13 and an inner sheath 14 of FRPP glass fiber reinforced polypropylene composite material, which greatly improves the strength, wear resistance and corrosion resistance of the lifting pipeline.

[0035] The above is only a preferred embodiment of the utility model. Any person skilled in the art may modify the utility model by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or replacement based on the technical solution of the utility model belongs to the scope of protection claimed by the utility model.

Claims

1. A FRPP hollow wall winding pipe, comprising a pipe body (11), wherein a plurality of hollow walls (12) are arranged inside the pipe body (11), and a plastic steel strip (15) is fixedly installed on the inner wall of the hollow wall (12), characterized in that: A plastic steel pipe (16) is arranged between the plastic steel strips (15) in two adjacent hollow walls (12); the plastic steel pipe (16) is embedded in a pipe body (11) between the two adjacent hollow walls (12); an outer sheath (13) is arranged on the surface of the pipe body (11); and an inner sheath (14) is arranged on the inner wall of the pipe body (11).

2. The FRPP hollow wall winding pipe according to claim 1, characterized in that: The outer sheath (13) is made of FRPP glass fiber reinforced polypropylene composite material, and the outer sheath (13) is wrapped around the outer wall of the pipeline body (11) through an injection molding, extrusion or rotational molding process.

3. The FRPP hollow wall winding pipe according to claim 1, characterized in that: The inner sheath (14) is made of FRPP glass fiber reinforced polypropylene composite material, and the inner sheath (14) is attached to the inner wall of the pipe body (11) by injection molding, extrusion or rotational molding.

4. The FRPP hollow wall winding pipe according to claim 1, characterized in that: The hollow wall (12) is a ring-shaped structure with a semicircular cross-section. The hollow wall (12) is arranged around the inner wall of the pipe body (11). A plurality of the hollow walls (12) are evenly arranged along the pipe body (11), and a certain interval is provided between the plurality of the hollow walls (12).

5. The FRPP hollow wall winding pipe according to claim 1, characterized in that: The plastic-steel strip (15) is made of glass fiber reinforced plastic or carbon fiber reinforced plastic. The plastic-steel strip (15) is manufactured by extrusion and injection molding. The plastic-steel strip (15) is an annular structure with a semicircular arch cross-section. Both ends of the plastic-steel strip (15) are provided with protrusions. The protrusions at both ends of the plastic-steel strip (15) penetrate the inner wall of the hollow wall (12) and are embedded in the pipe body (11).

6. The FRPP hollow wall winding pipe according to claim 5, characterized in that: The plastic-steel pipe (16) is made of glass fiber reinforced plastic or carbon fiber reinforced plastic. The plastic-steel pipe (16) is manufactured by an extrusion process. The plastic-steel pipe (16) is an annular structure with an O-shaped cross section. The plastic-steel pipe (16) is embedded and installed between the protrusions of two adjacent plastic-steel strips (15). The plastic-steel strips (15) on both sides of the plastic-steel pipe (16) abut against both sides of the plastic-steel pipe (16).

7. The FRPP hollow wall winding pipe according to claim 1, characterized in that: The pipe body (11) is manufactured by injection molding, extrusion or rotational molding.

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