CN114251523A

CN114251523A - PE adds muscle composite pipe

Info

Publication number: CN114251523A
Application number: CN202210030694.8A
Authority: CN
Inventors: 颜爱忠; 宋成法; 马恩禄; 卜亚祥
Original assignee: Sinoso Science And Technology Inc; Jiangsu Zhongsu Water Saving Technology Co ltd
Current assignee: Sinoso Science And Technology Inc; Jiangsu Zhongsu Water Saving Technology Co ltd
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-03-29

Abstract

The invention belongs to the technical field of PE pipelines, and particularly relates to a PE reinforced composite pipe which comprises an inner pipe, wherein an outer pipe is sleeved outside the inner pipe, reinforcing ribs are embedded on the outer pipe and/or the inner pipe, and foam plastic is filled between the inner pipe and the outer pipe; the PE water supply pipeline buried underground is easy to burst due to uneven settlement because the PE water supply pipeline at the water and soil loss position cannot be supported by soil due to the loss of water and soil at the bottom of the pipe ditch; the polyethylene foam plastic has a good heat preservation effect, and reduces the possibility that the inner pipe is fractured due to the freezing of water flow in the inner pipe in winter, so that the service life of the composite pipe is prolonged, and the maintenance cost of the composite pipe is reduced.

Description

PE adds muscle composite pipe

Technical Field

The invention belongs to the technical field of PE pipelines, and particularly relates to a PE reinforced composite pipe.

Background

The application range of the common PE pipe water supply pipeline is lower than 40 ℃, the common PE pipe water supply pipeline cannot be used for a hot water conveying pipeline, the PE material is a thermoplastic resin with high crystallinity and non-polarity, the appearance of the original HDPE is milk white, the original HDPE is semitransparent to a certain degree in a micro-thin section, and the PE has the excellent characteristic of resisting most of domestic and industrial chemicals.

The PE water supply pipeline buried underground is easy to burst because of uneven settlement because the PE water supply pipeline at the water and soil loss position cannot be supported by soil due to the water and soil loss at the bottom of the pipe trench, and particularly the PE water supply pipeline passing through the soft soil areas such as ponds, concave areas and the like is easy to burst because of the influence of the water and soil loss.

Disclosure of Invention

In order to make up for the defects of the prior art, the PE reinforced composite pipe provided by the invention solves the problems that the PE water supply pipe buried underground cannot be supported by soil due to the loss of water and soil at the bottom of a pipe ditch, the PE water supply pipe is easy to burst due to uneven settlement, and the PE water supply pipe passing through soft soil areas such as ponds and concave areas is easy to burst due to the influence of water and soil loss.

The technical scheme adopted by the invention for solving the technical problems is as follows: the PE reinforced composite pipe comprises an inner pipe, wherein an outer pipe is sleeved outside the inner pipe, reinforcing ribs are embedded in the outer pipe and/or the inner pipe, and foam plastic is filled between the inner pipe and the outer pipe.

Preferably, a support piece is installed between the inner pipe and the outer pipe, the support piece is made of the same material as the outer pipe and the inner pipe, and the support piece is in a zigzag shape under the radial section of the outer pipe.

Preferably, the outer side of the inner tube and the inner side of the outer tube are wavy.

Preferably, the supporting member is fixedly connected with a projection.

Preferably, the lugs are distributed in a strip shape along the axial direction of the outer tube.

Preferably, the outer side surface of the inner pipe and the inner side surface of the outer pipe are both provided with clamping grooves, and the bending part of the support piece is inserted into the clamping grooves.

Preferably, the clamping groove is in a V shape.

Preferably, the thickness of the support member between the gap between the inner tube and the outer tube is greater than the width of the gap between the inner tube and the outer tube.

Preferably, the clamping grooves are formed in wave crests at wavy positions of the outer pipe and the inner pipe.

Preferably, when the reinforcing rib is arranged on the outer pipe, the thickness of the outer pipe is larger than that of the inner pipe.

The invention has the following beneficial effects:

1. according to the PE reinforced composite pipe, the foam plastic is arranged, so that the external force impact on the outer pipe and the sloshing of water flow in the inner pipe can be buffered, the possibility of bursting of the composite pipe is reduced, the polyethylene foam plastic has a good heat insulation effect, the possibility of expanding and cracking of the inner pipe caused by freezing of water flow in the inner pipe in winter is reduced, the service life of the composite pipe is prolonged, and the maintenance cost of the composite pipe is reduced.

2. According to the PE reinforced composite pipe, the supporting piece is arranged, so that when the outer pipe extrudes towards the inner pipe and the inner pipe vibrates to extrude towards the outer pipe, the supporting piece can support the outer pipe and the inner pipe, the gap distance between the outer pipe and the inner pipe is kept, the possibility of extrusion and damage caused by mutual attachment of the outer pipe and the inner pipe is reduced, and the compression resistance of the composite pipe is improved.

3. According to the PE reinforced composite pipe, the wavy pipe wall is arranged, so that when foam plastic is filled between the inner pipe and the outer pipe, the contact area between the foam plastic and the pipe wall is increased, the friction force between the foam plastic and the pipe wall is increased, the possibility of the relative position of the outer pipe and the inner pipe being deviated is reduced, and the protection effect of the outer pipe on the inner pipe is improved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

in the figure: 1. an inner tube; 2. an outer tube; 21. reinforcing ribs; 3. a support member; 31. a bump; 32. a card slot;

Detailed Description

In order to make the objects, technical means and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The PE reinforced composite pipe provided by the invention solves the problems that the PE water supply pipe buried underground cannot be supported by soil due to the loss of water and soil at the bottom of a pipe ditch, the PE water supply pipe at the water and soil loss position is easily supported by the soil, the PE water supply pipe is easily burst due to uneven settlement, and the PE water supply pipe passing through soft soil areas such as ponds, concave lands and the like is more easily affected by the water and soil loss to burst;

in order to solve the technical problems, the technical scheme in the embodiment of the invention has the following general idea: through setting up strengthening rib 21, increase the intensity of pipeline, reduce the cracked possibility of pipeline appearance, the preferred polyethylene foam of foamed plastic, polyethylene foam has good cushioning nature, through setting up support piece 3 for when outer tube 2 extrudees to inner tube 1 and inner tube 1 rivers vibration makes inner tube 1 extrude to outer tube 2, support piece 3 can support outer tube 2 and inner tube 1, keeps the clearance distance between outer tube 2 and inner tube 1.

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1, the PE reinforced composite pipe of the present invention comprises an inner pipe 1, an outer pipe 2 is sleeved outside the inner pipe 1, reinforcing ribs 21 are embedded on the outer pipe 2 and/or the inner pipe 1, and foam plastic is filled between the inner pipe 1 and the outer pipe 2;

the PE water supply pipeline buried underground is easy to crack because of uneven settlement because the PE water supply pipeline at the water and soil loss position cannot be supported by soil due to the loss of water and soil at the bottom of the pipe ditch, and especially the PE water supply pipeline passing through the soft soil areas such as ponds, concave lands and the like is easy to crack because of the influence of the water and soil loss;

according to the invention, by arranging the outer pipe 2, when the soil and water at the bottom of the pipeline are lost, the inner pipe 1 and the outer pipe 2 are both made of PE (polyethylene), the gap between the inner pipe 1 and the outer pipe 2 is filled with the foam plastic in a molten state, the positions of the inner pipe 1 and the outer pipe 2 are fixed by the foam plastic after the foam plastic is molded, the outer pipe 2 can support and protect the inner pipe 1, so that the outer pipe 2 bears the pressure of the soil and water, the stress of the inner pipe 1 is reduced, the stress of the inner pipe 1 is relatively uniform, the possibility of bursting and leakage of the inner pipe 1 is reduced, the strength of the pipeline is increased by arranging the reinforcing ribs 21, the possibility of cracking of the pipeline is reduced, the foam plastic is preferably polyethylene foam plastic, the polyethylene foam plastic has good buffer property, the external force impact on the outer pipe 2 and the surge of water flow in the inner pipe 1 can be buffered, and the possibility of bursting of the composite pipe is reduced, and the polyethylene foam plastic has good heat insulation effect, and reduces the possibility that the inner pipe 1 is fractured by the frozen water flow in the inner pipe 1 when the temperature is lower in winter, thereby prolonging the service life of the composite pipe and reducing the maintenance cost of the composite pipe.

As an embodiment of the present invention, a support 3 is installed between the inner tube 1 and the outer tube 2, the support 3 is made of the same material as the outer tube 2 and the inner tube 1, and the support 3 is in a zigzag shape in a radial cross section of the outer tube 2; the during operation, through setting up support piece 3 for outer tube 2 receives the pressure of soil and water to inner tube 1 extrusion and the vibration of inner tube 1 rivers make inner tube 1 to outer tube 2 when extrudeing, support piece 3 can support outer tube 2 and inner tube 1, keeps the clearance distance between outer tube 2 and inner tube 1, reduces outer tube 2 and the mutual laminating of inner tube 1 and causes the extrusion and damaged possibility, thereby improves the compressive property of composite pipe, promotes the resistance of composite pipe and bends, cracked ability.

As an embodiment of the present invention, the outer side of the inner tube 1 and the inner side of the outer tube 2 are waved; the during operation, through setting up wavy pipe wall for when filling foamed plastic between inner tube 1 and outer tube 2, increase foamed plastic and the area of contact of pipe wall, make the frictional force increase between foamed plastic and pipe wall, reduce the possibility that outer tube 2 and 1 relative position of inner tube take place the skew, improve the protection effect of outer tube 2 to inner tube 1, improve foamed plastic to the gluing intensity of inner tube 1 and outer tube 2, reduce inner tube 1 and outer tube 2 and take place the possibility of separation, layering.

As an embodiment of the present invention, the supporting member 3 is fixedly connected with a bump 31; during operation, through setting up lug 31, increase the area of contact between support piece 3 and the foamed plastic for the foamed plastic can be better fixes support piece 3's position, reduces support piece 3 and takes place the possibility of deflection and skew, makes support piece 3 can be better for inner tube 1 and outer tube 2 provide the support.

As an embodiment of the present invention, the protrusions 31 are distributed in a strip shape along the axial direction of the outer tube 2; the during operation, lug 31 is the same with the material of inner tube 1 and outer tube 2, lays the compound pipe and need carry out the welded condition to compound pipe under, through the one end of cuting two continuous compound pipes for the tip lug position of two compound pipes corresponds, can carry out the hot melt welding through lug 31 in the compound pipe to two needs links to each other, make support piece 3 in the compound pipe of two links to each other also can be fine connect, thereby improve compound pipe welded joint strength, support piece 3 after the improvement is connected is to the support effect of inner tube 1 and outer tube 2.

As an embodiment of the present invention, the outer side surface of the inner tube 1 and the inner side surface of the outer tube 2 are both provided with a clamping groove 32, and the bent portion of the support member 3 is inserted into the clamping groove 32; during operation, before filling foamed plastic, insert in draw-in groove 32 through the department of bending with support piece 3, make draw-in groove 32 carry on spacingly to support piece 3, make support piece 3 when receiving impact deformation bounce-back, the bending point can keep in draw-in groove 32, it can't reset to reduce the bending point and receive impact deformation back, make the distance between the bending point change, the thickness that leads to support piece 3 to be located between inner tube 1 and the 2 clearances of outer tube changes, cause the possibility that some bending points can't contact with the pipe wall, thereby make support piece 3's bending point can be better support inner tube 1 and outer tube 2.

As an embodiment of the present invention, the slot 32 is shaped like a "V"; the during operation, when outer tube 2 received the extrusion to take place to warp, the draw-in groove 32 inner wall of pressurized department keeps away from each other for the opening part increase of draw-in groove 32, the draw-in groove 32 inner wall of other departments is close to each other and makes the opening part of draw-in groove 32 reduce, makes draw-in groove 32 can support the pipeline, reduces the possibility of fracture when the pipeline warp, improves the compressive capacity of pipeline, reduces the possibility that the pipeline takes place to burst.

As an embodiment of the present invention, the thickness of the supporting member 3 between the gap between the inner tube 1 and the outer tube 2 is larger than the width of the gap between the inner tube 1 and the outer tube 2; during operation, when inserting inner tube 1 in outer tube 2, earlier put into outer tube 2 with support piece 3 for the position of inner tube 1 is reserved at support piece 3 middle part, and when inserting inner tube 1, support piece 3 can carry on spacingly to inner tube 1, makes inner tube 1 can be in the center of outer tube 2, makes each strong point atress of support piece 3 more average, thereby improves the compressive capacity of composite pipe.

As an embodiment of the present invention, the locking groove 32 is formed on the wave crest at the wavy position of the outer tube 2 and the inner tube 1; during operation, through seting up the crest department in outer tube 2 and 1 wave department of inner tube with draw-in groove 32 for draw-in groove 32 is less to outer tube 2 and 1 influence of inner tube, and foam can be better when pouring foam flows along the trough department of outer tube 2 and 1 wave department of inner tube, makes support piece 3 less to the hindrance of foam flow, makes the foam fill more fully.

In one embodiment of the present invention, when the reinforcing ribs 21 are provided on the outer pipe 2, the thickness of the outer pipe 2 is greater than that of the inner pipe 1; the during operation, the outer tube 2 of compound pipe mainly plays the effect of resistance to compression, sets up thicker outer tube 2 and strengthening rib 21 to increase outer tube 2's compressive capacity, under the protection of outer tube 2, the damaged possibility of inner tube 1 is lower, do anticorrosive treatment can, through setting up thinner saving manufacturing cost with inner tube 1.

The specific working process is as follows:

during production, the inner pipe 1 and the outer pipe 2 are produced through an extruder, the reinforcing ribs 21 are wound in a molten state of the outer pipe 2, the produced and molded outer pipe 2 is sleeved on the inner pipe 1, the supporting piece 3 is produced through the extruder, the molded supporting piece 3 is inserted into a clamping groove 32 reserved between the inner pipe 1 and the outer pipe 2, and then foamed plastic in a molten state is filled between the inner pipe 1 and the outer pipe 2;

when the pipeline is used, the outer pipe 2 can support and protect the inner pipe 1, so that the stress of the inner pipe 1 is uniform, the possibility of leakage of the inner pipe 1 due to burst is reduced, the strength of the pipeline is increased by arranging the reinforcing ribs 21, the possibility of cracks of the pipeline is reduced, the polyethylene foam plastic is preferably selected as the foam plastic, the polyethylene foam plastic has good buffering performance, when the outer pipe 2 extrudes towards the inner pipe 1 and the inner pipe 1 vibrates to extrude towards the outer pipe 2 by arranging the supporting piece 3, the supporting piece 3 can support the outer pipe 2 and the inner pipe 1 and keep the gap distance between the outer pipe 2 and the inner pipe 1, and when the foam plastic is filled between the inner pipe 1 and the outer pipe 2 by arranging the wavy pipe wall, the contact area between the foam plastic and the pipe wall is increased, the friction between the foam plastic and the pipe wall is increased, and the possibility of offset of the relative position of the outer pipe 2 and the inner pipe 1 is reduced, by arranging the convex block 31, the contact area between the support piece 3 and the foamed plastic is increased, so that the foamed plastic can better fix the position of the support piece 3, the possibility of deflection and offset of the support piece 3 is reduced, under the condition that the composite pipe is required to be welded when the composite pipe is laid, the support piece 3 in the two connected composite pipes can be well connected by carrying out hot melt welding on the convex block 31 in the two connected composite pipes, the bent part of the support piece 3 is inserted into the clamping groove 32, so that the clamping groove 32 limits the support piece 3, when the support piece 3 is rebounded by impact deformation, the bent point can be kept in the clamping groove 32, the situation that the bent point cannot be reset after being subjected to impact deformation is reduced, the distance between the bent points is changed, the thickness of the support piece 3 is changed, and the possibility that some bent points cannot be contacted with the pipe wall is caused, when the outer tube 2 is extruded and deformed, the inner walls of the clamping grooves 32 at the pressed part are far away from each other, so that the opening of the clamping groove 32 is enlarged, the inner walls of the clamping grooves 32 at other positions are close to each other, so that the opening of the clamping groove 32 is reduced, thereby being beneficial to the deformation of the pipeline, when the inner pipe 1 is inserted into the outer pipe 2, firstly, the supporting piece 3 is put into the outer tube 2, so that the position of the inner tube 1 is reserved in the middle of the supporting piece 3, when the inner pipe 1 is inserted, the supporting piece 3 can limit the position of the inner pipe 1, so that the inner pipe 1 can be positioned at the center of the outer pipe 2, each supporting point of the supporting piece 3 is stressed more evenly, through seting up the crest department in outer tube 2 and 1 wave department of inner tube with draw-in groove 32 for draw-in groove 32 is less to outer tube 2 and 1 influence of inner tube, and outer tube 2 of compound pipe mainly plays the effect of resistance to compression, sets up thicker outer tube 2 and strengthening rib 21, thereby increases outer tube 2's compressive capacity.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A PE adds muscle composite pipe which characterized in that: including inner tube (1), the outside cover of inner tube (1) is equipped with outer tube (2), inlay on outer tube (2) and/or inner tube (1) and be equipped with strengthening rib (21), it has foamed plastic to fill between inner tube (1) and outer tube (2).

2. The PE reinforced composite pipe according to claim 1, wherein: install support piece (3) between inner tube (1) and outer tube (2), support piece (3) are the same with the material of outer tube (2) and inner tube (1), support piece (3) are dogleg shape under the radial cross-section of outer tube (2).

3. The PE reinforced composite pipe according to claim 2, wherein: the outer side of the inner pipe (1) and the inner side of the outer pipe (2) are wavy.

4. The PE reinforced composite pipe according to claim 3, wherein: the supporting piece (3) is fixedly connected with a convex block (31).

5. The PE reinforced composite pipe according to claim 4, wherein: the convex blocks (31) are distributed in a strip shape along the axial direction of the outer pipe (2).

6. The PE reinforced composite pipe according to claim 3, wherein: clamping grooves (32) are formed in the outer side face of the inner pipe (1) and the inner side face of the outer pipe (2), and the bending part of the support piece (3) is inserted into the clamping grooves (32).

7. The PE reinforced composite pipe according to claim 6, wherein: the clamping groove (32) is V-shaped.

8. The PE reinforced composite pipe according to claim 7, wherein: the thickness of the supporting piece (3) between the gap between the inner pipe (1) and the outer pipe (2) is larger than the width of the gap between the inner pipe (1) and the outer pipe (2).

9. The PE reinforced composite pipe according to claim 7, wherein: the clamping grooves (32) are formed in wave peaks of the wavy positions of the outer pipe (2) and the inner pipe (1).

10. The PE reinforced composite pipe according to claim 1, wherein: when the reinforcing ribs (21) are arranged on the outer pipe (2), the thickness of the outer pipe (2) is larger than that of the inner pipe (1).