CN101392856A

CN101392856A - Spiral reinforcing rod composite pipe

Info

Publication number: CN101392856A
Application number: CNA2008102286101A
Authority: CN
Inventors: 李家勇
Original assignee: 李家勇
Current assignee: Hunan Shuangma New Material Technology Co., Ltd.
Priority date: 2008-11-07
Filing date: 2008-11-07
Publication date: 2009-03-25
Anticipated expiration: 2028-11-07
Also published as: CN101392856B

Abstract

The invention relates to a spiral reinforcing rib composite pipe, which comprises a thin wall iron pipe, an outer plastic layer on the outer wall of the thin wall iron pipe and an inner plastic layer on the inner wall of the thin wall iron pipe. The thin wall iron pipe is provided with spiral reinforcing ribs formed by protrusion of the pipe wall along the circumferential direction. Because the technical proposal that the pipe wall is jointly formed by the thin wall iron pipe, the outer plastic layer and the plastic layer is adopted, the thin wall iron pipe avoids contacting water or other substances with corrosiveness, and the corrosion resistance of the composite pipe is improved. Because the thin wall iron pipe is provided with the spiral reinforcing ribs formed by the protrusion of the pipe wall along the circumference direction, the strength of the composite pipe is further increased, the composite pipe does not need to be provided with the reinforcing ribs separately for improving the strength, and the composite pipe simplifies the processing technique and reduces the consumption of raw materials.

Description

A kind of spiral reinforcing rod composite pipe

Technical field

The present invention relates to a kind of composite pipe, especially a kind of composite pipe that stiffening rib is arranged.

Background technique

Advantages such as it is light that plastic tube has an operating weight, corrosion-resistant, the alternative in a lot of fields as metal tube is widely used, but the intensity of plastic tube is low, meets that performance reduces seriously especially when cold and hot.In order to address this problem, take to increase the thickness of tube wall usually, but adopt this method to increase cost of production on the one hand, still do not satisfy some particular job environment on the other hand; The another kind of method that solves is exactly to add the intensity that steel wire, steel band or steel plate with holes improve pipe at inside of plastic tubes, but these pipes are not because reinforced layer is continuous face, and is too high as local temperature, impact down in rugged environment, is easy to cause pipeline damage.

Summary of the invention

The technical problem that invention will solve is: provide a kind of corrosion-resistant, the spiral reinforcing rod composite pipe that intensity is high.

The technological scheme that the technical solution problem is adopted: a kind of spiral reinforcing rod composite pipe, comprise the thin-walled iron pipe; the inner plastic layer on outer plastic layer on the thin-walled iron pipe outer wall and the thin-walled iron pipe inwall, described thin-walled iron pipe is being provided with the spiral reinforcing rod that is made of to outer lug tube wall along circumference side.

As preferred version of the present invention, the cross section of described spiral reinforcing rod is a ∧ shape.

As preferred implementation of the present invention, described thin-walled iron pipe is made by the welding of sheet iron helix-coil.

As improvement of the present invention, along the circumferential direction be provided with the spiral reinforcing rod that the weld part by with sheet iron helix-coil welding system thin-walled iron pipe the time constitutes at the thin-walled iron pipe.

As another kind of improvement the of the present invention, be useful on the transition glue-line of gluing thin-walled iron pipe and plastic layer between inside/outside plastic layer and the thin-walled iron pipe.

As a further improvement on the present invention, on described inner plastic layer, has the inner plastic layer spiral reinforcing rod that the outside lug boss of filling thin-walled iron pipe constitutes.

Beneficial effect: owing to adopted the technological scheme of forming tube wall by thin-walled iron pipe, outer plastic layer and inner plastic layer jointly, avoided the thin-walled iron pipe directly to have corrosive material and contacted, improved the corrosion resistance of composite pipe of the present invention with water or other; Owing to adopted between outer plastic layer and inner plastic layer, to add the thin-walled iron pipe, improved the intensity of composite pipe of the present invention, the heavy wall plastic tube that reaches same intensity has significantly reduced the use amount of plastics, has reduced cost; Because the thin-walled iron pipe is being provided with the spiral reinforcing rod that is made of to outer lug tube wall along circumference side, further increased the intensity of composite pipe of the present invention, need not set up separately for raising intensity and put stiffening rib, simplified production technology, reduced raw-material consumption; Because the thin-walled iron pipe is made in the welding of sheet iron helix-coil, more help production and processing, help on the thin-walled iron pipe, suppressing spiral reinforcing rod to outer lug; Owing to be the spiral reinforcing rod that on the thin-walled iron pipe wall of integral body, is provided with to outer lug, so the intensity of composite pipe of the present invention adopts the intensity of composite pipe of steel wire or steel band stiffening rib higher; Because the inner plastic layer of this pipeline is filled the helical groove in the thin-walled iron pipe, so the inner plastic layer of this composite pipe self just forms the plastic tube that has spiral reinforcing rod, be particularly suitable for like this being operated under the negative pressure condition, inner plastic and thin-walled iron pipe can not broken away from, make the inner wall smooth of composite pipe simultaneously, reduced the fluid resistance of pipeline.

Description of drawings

Below in conjunction with accompanying drawing concrete mode of the present invention is described in further detail:

Fig. 1 is a plan view of the present invention.

Fig. 2 is an axial sectional view of the present invention.

Fig. 3 is the partial enlarged drawing of axial sectional view of the present invention.

Fig. 4 is the axial sectional view of another embodiment of the invention.

Embodiment

As Fig. 1, Fig. 2 and shown in Figure 3 shown in, spiral reinforcing rod composite pipe of the present invention, comprise thin-walled iron pipe 1, the inner plastic layer 3 on outer plastic layer 2 on the thin-walled iron pipe outer wall and the thin-walled iron pipe inwall is being provided with the spiral reinforcing rod 4 that is made of to outer lug tube wall at described thin-walled iron pipe along circumference side.

As preferred implementation of the present invention, the cross section of described spiral reinforcing rod 4 is a ∧ shape, also can be semicircle or arc or ∩ shape or Jiong shape, so long as the spiral reinforcing rod 4 that oriented outer lug formation can improve intensity on thin-walled iron pipe wall is embodiments of the present invention.

Described thin-walled iron pipe 1 is by behind the sheet iron helix-coil, carry out the thin-walled iron pipe 1 that continuous welding is made, in the process of welding, can produce weld seam like this along thin-walled iron pipe circumferencial direction, because the weld joint has thicker weldering meat, can play the effect of stiffening rib, like this spiral reinforcing rod 5 that constitutes with regard to the weld part that has formed by the time along circumference side at the thin-walled iron pipe with sheet iron helix-coil welding system thin-walled iron pipe.

Firmly gluing is together in order to make inner plastic layer 3, outer plastic layer 2 and thin-walled iron pipe 1, be not easy to break away from, be useful on the transition glue-line 6 of gluing thin-walled iron pipe 1 and plastic layer 2,3 between inside/outside plastic layer and thin-walled iron pipe, described transition glue-line 6 binds resin for hot melt.

On thin-walled iron pipe inwall, pipe interior is filled to smooth pipeline with inner plastic layer 3, like this, the inner plastic layer spiral reinforcing rod 7 that will constitute at the filled plastics of the outside lug boss of thin-walled iron pipe, further improved the intensity of composite pipe of the present invention, inner plastic layer and thin-walled iron can be separated from.

Fig. 4 shows another embodiment of the invention, and in order to save material, described inner plastic layer spiral reinforcing rod is the inner plastic layer spiral reinforcing rod 7 with hollow structure.

The plastics of inner plastic layer 3 of the present invention and outer plastic layer 2 are selected thermoplastic for use, as polyethylene, PVC etc., can specifically select according to different Environmental Conditions; Thin-walled iron pipe 1 also can select for use copper pipe, aluminum pipe etc. to substitute according to usage requirement.

Claims

1. spiral reinforcing rod composite pipe, comprise thin-walled iron pipe (1); outer plastic layer (2) on the thin-walled iron pipe outer wall and the inner plastic layer (3) on the thin-walled iron pipe inwall is characterized in that: described thin-walled iron pipe (1) is being provided with the spiral reinforcing rod (4) that is made of to outer lug tube wall along circumference side.

2. a kind of spiral reinforcing rod composite pipe according to claim 1 is characterized in that: the cross section of described spiral reinforcing rod (4) is a ∧ shape.

3. a kind of spiral reinforcing rod composite pipe according to claim 1 is characterized in that: described thin-walled iron pipe (1) is made by the welding of sheet iron helix-coil.

4. a kind of spiral reinforcing rod composite pipe according to claim 3 is characterized in that: the spiral reinforcing rod (5) that the weld part when thin-walled iron pipe (1) is provided with by usefulness sheet iron helix-coil welding system thin-walled iron pipe (1) along circumference side constitutes.

5. according to each described a kind of spiral reinforcing rod composite pipe of claim 1 to 4, it is characterized in that: on described inner plastic layer (3), have the inner plastic layer spiral reinforcing rod (7) that the outside lug boss of filling thin-walled iron pipe constitutes.

6. a kind of spiral reinforcing rod composite pipe according to claim 5 is characterized in that: described inner plastic layer spiral reinforcing rod (7) is the hollow shape stiffening rib.

7. according to each described a kind of spiral reinforcing rod composite pipe of claim 1 to 4, it is characterized in that: the transition glue-line (6) that is useful on gluing thin-walled iron pipe (1) and plastic layer (2,3) between inside/outside plastic layer (3,2) and the thin-walled iron pipe.

8. a kind of spiral reinforcing rod composite pipe according to claim 5 is characterized in that: the transition glue-line (6) that is useful on gluing thin-walled iron pipe (1) and plastic layer (2,3) between inside/outside plastic layer (2,3) and the thin-walled iron pipe (1).