CN214171561U

CN214171561U - Polyolefin DRPO steel band reinforced composite pipe

Info

Publication number: CN214171561U
Application number: CN202021814025.2U
Authority: CN
Inventors: 王有财; 杜主伟; 胡剑峰
Original assignee: Sichuan Dicheng Plastic Pipe Co ltd
Current assignee: Sichuan Dicheng Plastic Pipe Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-09-10
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses a compound pipe of polyolefin DRPO steel band reinforcing, including inner wall and outer wall, the inner wall with be equipped with compound steel band between the outer wall, compound steel band includes steel band, resin base reactivity compound solidified layer and the polyolefin bonding resin layer of cladding outside from inside to outside in proper order. The utility model discloses a through add composite steel band while composite steel band between inner wall and outer wall and constitute by steel band, resin base reactivity compound solidified layer and polyolefin bonding resin layer, strengthened the laminating ability between composite steel band and inner wall and the outer wall, make the three bond better, avoid appearing the layering, make composite pipe have matter light, advantages such as ring rigidity is high, corrosion-resistant.

Description

Polyolefin DRPO steel band reinforced composite pipe

Technical Field

The utility model relates to a compound pipeline technical field is moulded to the steel, the more specifically polyolefin DRPO steel band reinforcing composite pipe that says so.

Background

At present, the traditional reinforced concrete pipe, ceramic pipe and cast iron pipe are still used as mainstream in the drainage pipe network system in China, but the construction difficulty is high, the connection between the pipelines is complex, and huge construction waste is often caused. According to the development condition of plastic pipes in developed countries abroad and the vigorous popularization of industrial policies in China, large-diameter plastic buried drain pipes become a new investment hotspot. Due to the unique structural design of the double-wall winding pipe, the double-wall winding pipe saves more raw materials than other plastic pipes, and is the first choice of a plurality of investors. At present, polyvinyl chloride (PVC) and Polyethylene (PE) pipes are still used as leading products for plastic pipes at home and abroad, the plastic pipes rapidly occupy the building water supply and drainage market by using the special advantages of the plastic pipes, but the chemical corrosion and aging resistance of the existing steel-plastic winding drainage pipe are still to be enhanced due to insufficient flexibility, shock resistance and ring rigidity under the use of long-term severe environment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a compound pipe of polyolefin DRPO steel band reinforcing that ring rigidity and ring flexibility are all higher, the shock resistance is strong, more durable.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a compound pipe of polyolefin DRPO steel band reinforcing, includes inner wall and outer wall, the inner wall with be equipped with compound steel band between the outer wall, compound steel band includes steel band, resin base reactivity compound layer of solidifying and the polyolefin bonding resin layer of cladding outside from inside to outside in proper order.

In one preferred scheme, the outer wall is a polyolefin DRPO basic layer, and the inner wall is a modified PVDF functional layer.

According to one preferred scheme, the surface of the steel strip is provided with anchor lines, and the steel strip is made of carbon steel, alloy steel, galvanized steel, aluminized steel or tinned steel.

In one preferable scheme, the cured resin-based reactive composite layer has a thickness of 20-300 μm and is obtained by curing a resin-based reactive composite.

In one preferable embodiment, the thickness of the polyolefin adhesive resin is 100 to 2000 μm.

In a preferred scheme, a bearing plate and a buffering support structure are further arranged between the outer wall and the inner wall.

According to one preferable scheme, the top end of the buffering support structure is of a hollow rectangular structure, the bottom end of the buffering support structure is of a stone arch bridge-shaped structure, the middle of the buffering support structure is of a mountain-shaped structure, the bottom end of the buffering support structure is divided into a left cavity, a hollow cavity and a right cavity, the left cavity and the right cavity are communicated with cavities between the inner wall and the outer wall, the composite steel belt comprises a trapezoidal portion and an S-shaped tail portion, the arc-shaped tail end of the S-shaped tail portion is clamped in the left cavity and the right cavity of the buffering support structure, a welding reinforcing belt perpendicular to the inner wall is arranged at the tail end of the S-shaped tail portion, the welding reinforcing belt is a steel sheet with continuous wave crests and wave troughs, the support plates penetrate through the reinforcing steel belt and stand between the outer wall and the inner wall, and the support plates are arranged on the cross section of the water drainage pipe at intervals.

In one preferable scheme, the outer wall is a polyolefin DRPO resin layer added with an ultraviolet-resistant opacifier.

The utility model has the advantages that:

1) the utility model discloses a through add composite steel band while composite steel band between inner wall and outer wall and constitute by steel band, resin base reactivity compound solidified layer and polyolefin bonding resin layer, strengthened the laminating ability between composite steel band and inner wall and the outer wall, make the three bond better, avoid appearing the layering, make composite pipe have matter light, advantages such as ring rigidity is high, corrosion-resistant.

2) The surface of the steel strip is provided with the anchor lines, so that the roughness is improved, the surface activity is increased, and the adhesive force between the steel strip and the resin-based reactive compound is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of the composite steel strip of the present invention;

fig. 3 is a schematic structural view of embodiment 2 of the present invention.

In the figure, 1-inner wall, 2-outer wall, 3-composite steel band, 31-steel band, 32-resin-based reactive compound cured layer, 33-polyolefin adhesive resin layer, 34-trapezoidal part, 35-S-shaped tail, 4-bearing plate, 5-buffer support structure, 6-left cavity, 7-hollow cavity, 8-right cavity and 9-welding reinforcing band.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel relative to "perpendicular," and does not mean that the structures are necessarily perfectly parallel, but may be slightly tilted.

The terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal, vertical or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

Furthermore, the terms "substantially", and the like are intended to indicate that the relative terms are not necessarily strictly required, but may have some deviation. For example: "substantially equal" does not mean absolute equality, but it is difficult to achieve absolute equality in actual production and operation, and certain deviations generally exist. Thus, in addition to absolute equality, "substantially equal" also includes the above-described case where there is some deviation. In this case, unless otherwise specified, terms such as "substantially", and the like are used in a similar manner to those described above.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model provides two kinds of technical scheme:

example 1

As shown in fig. 1 and 2, the polyolefin DRPO steel strip reinforced composite pipe comprises an inner wall 1 and an outer wall 2, wherein a composite steel strip 3 is arranged between the inner wall 1 and the outer wall 2, and the composite steel strip 3 sequentially comprises a steel strip 31, a resin-based reactive composite cured layer 32 and a polyolefin bonding resin layer 33 coated outside from inside to outside. The utility model discloses a through add 3 while composite steel bands 3 of composite steel bands between inner wall 1 and outer wall 2 and constitute by steel band 31, resin base reactivity compound solidified layer 32 and polyolefin bonding resin layer 33, strengthened composite steel band 3 and the laminating ability between inner wall 1 and the outer wall 2, make the three bond better, avoid appearing the layering, make composite pipe have matter light, advantage such as ring rigidity is high, corrosion-resistant.

Preferably, the outer wall 2 is a polyolefin DRPO basic layer, and the inner wall 1 is a modified PVDF functional layer.

Preferably, the surface of the steel strip 31 is provided with anchor lines, and the material of the steel strip 31 is alloy steel. The surface of the steel strip 31 is provided with the anchor lines, so that the roughness is improved, the surface activity is increased, and the adhesive force between the steel strip 31 and the resin-based reactive compound is greatly improved.

Preferably, the cured layer 32 of the resin-based reactive composite has a thickness of 40 μm and is obtained by curing the resin-based reactive composite.

Preferably, the resin-based reactive compound is selected from polyesters; the resin-based reactive compound is in the form of powder.

Preferably, the polyolefin adhesive resin layer 33 is obtained by curing a polyolefin adhesive resin selected from a copolymer of maleic anhydride and olefin; the thickness of the polyolefin adhesive resin was 150. mu.m.

Preferably, the copolymerization mode of the copolymer refers to graft copolymerization, block copolymerization or random copolymerization.

Preferably, the outer wall 2 is a polyolefin DRPO resin layer added with an ultraviolet-resistant opacifier.

Example 2

As shown in fig. 3, the polyolefin DRPO steel strip 31 reinforced composite pipe comprises an inner wall 1 and an outer wall 2, a composite steel strip 3 is arranged between the inner wall 1 and the outer wall 2, and the composite steel strip 3 sequentially comprises the steel strip 31, a resin-based reactive composite cured layer 32 and a polyolefin adhesive resin layer 33 coated outside from inside to outside. The utility model discloses a through add 3 while composite steel bands 3 and comprise steel band 31, resin base reactivity compound solidified layer 32 and polyolefin bonding resin layer 33 between inner wall 1 and outer wall 2, strengthened composite steel band 31 and the laminating ability between inner wall 1 and the outer wall 2, make the three bond better, avoid appearing the layering, make composite pipe have matter light, advantage such as ring rigidity is high, corrosion-resistant.

Preferably, the outer wall 2 is a polyolefin DRPO basic layer, and the inner wall 1 is a modified PVDF functional layer. So that the adhesive force between the outer wall 2 and the inner wall 1 and the composite steel strip 3 is stronger.

Preferably, the surface of the steel strip 31 is provided with anchor lines, and the material of the steel strip 31 is carbon steel. The surface of the steel strip 31 is provided with the anchor lines, so that the roughness is improved, the surface activity is increased, and the adhesive force between the steel strip 31 and the resin-based reactive compound is greatly improved.

Preferably, the cured layer 32 of the resin-based reactive composite has a thickness of 65 μm and is obtained by curing the resin-based reactive composite.

Preferably, the resin-based reactive compound is selected from organic silicon resins; the resin-based reactive compound is in the form of a liquid.

Preferably, a bearing plate 4 and a buffer support structure 5 are further arranged between the outer wall 2 and the inner wall 1.

Preferably, the top end of the buffer support structure 5 is a hollow rectangular structure, the bottom end of the buffer support structure is a stone arch bridge-shaped structure, the middle part of the buffer support structure is a mountain road-shaped structure, the bottom end of the buffer support structure is divided into a left cavity 6, a hollow cavity 7 and a right cavity 8, the left cavity 6 and the right cavity 8 are communicated with a cavity gap between the inner wall 1 and the outer wall 2, the composite steel strip 3 comprises a trapezoidal part 34 and an S-shaped tail part 35, the arc-shaped tail end of the S-shaped tail part 35 is clamped in the left cavity 6 and the right cavity 8 of the buffer support structure 5, the tail end of the S-shaped tail part 35 is provided with a welding reinforcing strip 9 perpendicular to the inner wall 1, the welding reinforcing strip 9 is a steel sheet with continuous wave crests and wave troughs, the support plate penetrates through the reinforcing steel strip 31 to stand between the outer wall 2 and the inner wall 1, and the support plates are arranged on the cross section of the drain pipe at intervals. This structural design has better ring rigidity and ring compliance, and the shock resistance is strong and more durable.

The composite steel belt 3 in the embodiment plays a majority of bearing and supporting functions, the special configuration of the buffer support structure 5 separates the outer wall 2 and the inner wall 1 into a plurality of cavities, and the configuration of the buffer support structure is similar to that of a spring, so that the buffer support structure has good shock absorption and buffer functions, and the arrangement of the support plate shares a part of pressure borne by the buffer support structure 5, so that the buffer support structure 5 can mainly play the shock absorption and buffer functions and cannot be damaged due to overlarge bearing; in addition, the welding reinforcing belt 9 with continuous wave crests and wave troughs also has the functions of bearing and buffering shock pressure; meanwhile, the outer wall 2, the buffer support structure 5 and the bearing plate are all made of modified polyolefin DRPO.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A polyolefin DRPO steel belt reinforced composite pipe is characterized in that: including inner wall and outer wall, the inner wall with be equipped with composite steel band between the outer wall, composite steel band includes steel band, resin base reactivity compound curing layer and the polyolefin bonding resin layer of cladding outside from inside to outside in proper order.

2. The polyolefin DRPO steel strip reinforced composite pipe of claim 1 wherein: the outer wall is a polyolefin DRPO basic layer, and the inner wall is a modified PVDF functional layer.

3. The polyolefin DRPO steel strip reinforced composite pipe of claim 2, characterized in that: the surface of the steel strip is provided with anchor lines, and the steel strip is made of carbon steel, alloy steel, galvanized steel, aluminized steel or tinned steel.

4. The polyolefin DRPO steel strip reinforced composite pipe of claim 2, characterized in that: the thickness of the resin-based reactive composite curing layer is 20-300 mu m, and the resin-based reactive composite curing layer is obtained by curing the resin-based reactive composite.

5. The polyolefin DRPO steel strip reinforced composite pipe of claim 2, characterized in that: the thickness of the polyolefin adhesive resin is 100-2000 mu m.

6. The polyolefin DRPO steel strip reinforced composite pipe of claim 2, characterized in that: and a bearing plate and a buffering support structure are arranged between the outer wall and the inner wall.

7. The polyolefin DRPO steel strip reinforced composite pipe of claim 6, wherein: the top end of the buffer support structure is of a hollow rectangular structure, the bottom end of the buffer support structure is of a stone arch bridge-shaped structure, the middle of the buffer support structure is of a mountain road-shaped structure, the bottom end of the buffer support structure is divided into a left cavity, a hollow cavity and a right cavity, the left cavity and the right cavity are communicated with cavities between an inner wall and an outer wall, the composite steel belt comprises a trapezoidal part and an S-shaped tail part, the arc-shaped tail end of the S-shaped tail part is clamped in the left cavity and the right cavity of the buffer support structure, a welding reinforcing belt perpendicular to the inner wall is arranged at the tail end of the S-shaped tail part, the welding reinforcing belt is a steel sheet with continuous wave crests and wave troughs, the support plates penetrate through the reinforcing steel belt and stand between the outer wall and the inner wall, and the support plates are arranged on the cross section of the water drainage pipe at intervals.