CN218670971U

CN218670971U - Plastic pipeline with external lining

Info

Publication number: CN218670971U
Application number: CN202223262789.7U
Authority: CN
Inventors: 吕建星
Original assignee: Hebei Xianyue Environmental Protection Equipment Co ltd
Current assignee: Hebei Xianyue Environmental Protection Equipment Co ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-03-21
Anticipated expiration: 2032-12-06

Abstract

The utility model relates to a pipeline technical field especially relates to a plastic pipeline with outer lining. Including inlayer and outer lining cooperation, realized when inlayer pipeline pressurized outwards takes place to expand deformation, through supporting the strength that the buffering strip absorbed deformation, avoid inlayer and outer direct extrusion, cause the problem of outer life-span reduction, and when the transportation is vacant, support the buffering strip again with consolidate the gomphosis of strip, can support the whole weight of pipeline, avoid the space between inlayer and the outer lining to take place to rock.

Description

Plastic pipeline with external lining

Technical Field

The utility model relates to a pipeline technical field especially relates to a plastic pipeline with outer lining.

Background

When the pipeline is arranged and used, due to the influence of the volume or temperature of a medium conveyed inside, the pipeline is collided and extruded outwards, when the pipeline is designed, the medium is conveyed stably enough in order to ensure the pipeline, so that the supporting strength is the first consideration, but the strength of the pipeline is enough to support and convey high-pressure or high-temperature medium, but the service life cannot be guaranteed after long-time use due to the fact that the pipeline lacks enough toughness, and due to the fact that the wall of the pipeline is thick, after the inner pipeline rises along with the medium to expand, since the outer pipeline is influenced by the temperature slowly, at the moment, the pressure between the inner layer and the outer layer of the pipeline is too high, and the outer layer of the pipeline is easy to damage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem, it is not enough to the technique that exists as above-mentioned, a plastic pipeline with outer lining is provided, adopt inlayer and outer lining cooperation, realized when inlayer pipeline pressurized outwards takes place to expand deformation, absorb the strength of deformation through supporting the buffering strip, avoid inlayer and outer direct extrusion, cause the problem of outer life-span reduction, and when the transportation is vacant, support the buffering strip again with consolidate the strip gomphosis, can support the whole weight of pipeline, avoid the space between inlayer and the outer lining to take place to rock.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: comprises an inner layer and an outer lining layer which are arranged from inside to outside; the outer wall of the inner layer is provided with a spiral reinforcing strip; the inner wall of the outer lining layer is provided with a supporting buffer strip which is reversely spiral with the reinforcing strip; the supporting buffer strip is far away from outer lining layer one side edge and is provided with the breach that is used for supplying the reinforcement strip to pass through along the helical direction equidistance.

Further optimize this technical scheme, the reinforcement strip cross-section is the rectangle.

Further optimizing the technical scheme, the notch arranged on the supporting buffer strip is a strip-shaped notch larger than the cross section of the reinforcing strip.

Further optimizing the technical scheme, the metal grids are embedded in the outer lining layer.

Further optimizing the technical scheme, the outer lining layer is made of FRP.

Further optimize this technical scheme, support the buffering strip and adopt chloroprene rubber.

Further optimizing the technical scheme, the inner layer is made of PP.

Compared with the prior art, the utility model has the advantages of it is following: 1. the structure is beneficial to ensuring that when the inner pipeline is expanded and deformed outwards under pressure, the supporting buffer strips absorb the deformation force, so that the problem that the service life of the outer layer is shortened due to direct extrusion of the inner layer and the outer layer is solved; 2. the inner layer is matched with the outer lining layer, the structure is favorable for ensuring that the supporting buffer strip is embedded with the reinforcing strip when the transportation is empty, the whole weight of the pipeline can be supported, and the phenomenon that the gap between the inner layer and the outer lining layer shakes is avoided.

Drawings

FIG. 1 is a schematic view of the overall construction of an externally lined plastic pipe.

Fig. 2 is a schematic view of the overall cross-sectional structure of the outer liner of an externally lined plastic pipe.

Fig. 3 is an enlarged view of a portion I of fig. 2 of an externally lined plastic pipe.

In the figure: 1. an inner layer; 2. an outer liner layer; 3. reinforcing the strips; 4. a support bumper bar; 5. and (4) a notch.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in combination with the following embodiments. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The specific implementation mode is as follows: as shown in the combined drawings 1-3, comprises an inner layer 1 and an outer lining layer 2 which are arranged from inside to outside; the inner layer 1 is made of PP (polypropylene); a metal grid is embedded in the outer lining layer 2; the outer lining layer 2 is made of FRP (fiber reinforced plastics); the outer wall of the inner layer 1 is provided with a spiral reinforcing strip 3; the cross section of the reinforcing strip 3 is rectangular; the inner wall of the outer lining layer 2 is provided with a supporting buffer strip 4 which is reversely spiral with the reinforcing strip 3; the supporting buffer strips 4 are made of chloroprene rubber; notches 5 for the reinforcing strips 3 to pass through are arranged on one side edge of the supporting buffer strip 4, which is far away from the outer lining layer 2, at equal intervals along the spiral direction; the notch 5 arranged on the supporting buffer strip 4 is a strip-shaped notch 5 which is larger than the cross section of the reinforcing strip 3. When the pipeline is transported and placed in a non-working state, as shown in a combined drawing 1-3, the reinforcing strips 3 are embedded into the notches 5 of the supporting buffer strips 4, so that the inner layer 1 is supported by the outer layer 2 and used for supporting the weight of the whole pipeline, the pipeline is ensured not to shake, when high-temperature media flow in the pipeline, as shown in a combined drawing 1-3, the inner layer 1 expands due to the temperature rise of the high-temperature media, at the moment, the reinforcing strips 3 are embedded into the notches 5 of the buffer supporting strips and extrude the supporting buffer strips 4 and further extrude the outer layer 2, the arrangement of the supporting buffer strips 4 relieves the pressure of the inner layer 1 directly on the outer layer 2, and the problems that the outer layer 2 is fatigued due to the fact that the outer layer 2 is directly extruded and is damaged due to overlong time are solved.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundary of the appended claims, or the equivalents of such scope and boundary.

Claims

1. A lined plastic pipe characterized by: comprises an inner layer (1) and an outer lining layer (2) which are arranged from inside to outside; the outer wall of the inner layer (1) is provided with a spiral reinforcing strip (3); the inner wall of the outer lining layer (2) is provided with a supporting buffer strip (4) which is reversely spiral with the reinforcing strip (3); support buffering strip (4) and keep away from outer backing layer (2) one side edge along the screw direction equidistance and be provided with breach (5) that are used for supplying reinforcing strip (3) to pass through.

2. A lined plastic pipe according to claim 1, wherein: the cross section of the reinforcing strip (3) is rectangular.

3. A lined plastic pipe according to claim 2, wherein: the notch (5) arranged on the supporting buffer strip (4) is a strip-shaped notch (5) which is larger than the cross section of the reinforcing strip (3).

4. A lined plastic pipe according to claim 1, wherein: and a metal grid is embedded in the outer lining layer (2).

5. A lined plastic pipe according to claim 1, wherein: the outer lining layer (2) is made of FRP.

6. A lined plastic pipe according to claim 1, wherein: the supporting buffer strips (4) are made of chloroprene rubber.

7. A lined plastic pipe according to claim 1, wherein: the inner layer (1) is made of PP.