阅读说明：本技术 一种双层管道 (Double-layer pipeline ) 是由 徐志强 陈浩生 于 2019-11-02 设计创作，主要内容包括：本发明涉及管道技术领域,尤其是一种双层管道,包括内层管道和外层管道,所述内层管道和外层管道之间通过凸起和连接槽固定连接,所述内层管道的外表面设有若干凸棱,所述外层管道的内表面有连接槽,所述内层管道的内表面有一圈不锈钢管道,所述内层管道与不锈钢管道之间通过套设连接；本发明种的双层管道,包括内层管道和外层管道,内层管道和外层管道之间通过凸起和连接槽固定连接,内层管道的外表面设有若干凸棱,外层管道的内表面有连接槽,内层管道和外层管道之间的连接强度更高,从而提高了双层管道的整体强度,内层管道的内表面有一圈不锈钢管道,不锈钢管道的结构设计,进一步提高了双层管道的整体强度。(The invention relates to the technical field of pipelines, in particular to a double-layer pipeline which comprises an inner layer pipeline and an outer layer pipeline, wherein the inner layer pipeline and the outer layer pipeline are fixedly connected through bulges and connecting grooves; the double-layer pipeline comprises an inner layer pipeline and an outer layer pipeline, wherein the inner layer pipeline and the outer layer pipeline are fixedly connected through a bulge and a connecting groove, a plurality of convex edges are arranged on the outer surface of the inner layer pipeline, the connecting groove is formed in the inner surface of the outer layer pipeline, the connecting strength between the inner layer pipeline and the outer layer pipeline is higher, and therefore the overall strength of the double-layer pipeline is improved.)

1. A double-layer pipe, characterized in that: including inlayer pipeline and outer pipeline, through arch and spread groove fixed connection between inlayer pipeline and the outer pipeline, the surface of inlayer pipeline is equipped with a plurality of beads, the internal surface of outer pipeline has the spread groove, the internal surface of inlayer pipeline has round stainless steel pipeline, establish through the cover and be connected between inlayer pipeline and the stainless steel pipeline.

2. The double-layered pipe according to claim 1, wherein: the inner layer pipeline is connected with the stainless steel pipeline through a hot melting method.

3. The double-layered pipe according to claim 1, wherein: the rib is arranged along the length direction of the inner layer pipeline.

4. The double-layered pipe according to claim 1, wherein: the longitudinal section of the convex ridge is triangular, and the longitudinal section of the connecting groove is triangular.

5. The double-layered pipe according to claim 4, wherein: the triangle is an equilateral triangle, and the side length of the equilateral triangle is 0.5-0.8 mm.

6. The double-layered pipe according to claim 1, wherein: the rib and the inner layer pipeline are of an integral structure.

7. The double-layered pipe according to claim 1, wherein: the inner surface of the inner layer pipeline is a rough surface.

8. The double-layered pipe according to claim 7, wherein: the rough surface is composed of a plurality of oblique lines which are arranged in parallel.

9. The double-layered pipe according to claim 8, wherein: the inclination angle of the oblique line is 30-45 degrees.

10. The double-layered pipe according to claim 1, wherein: the longitudinal section of the oblique line is triangular, and the height of the oblique line is 0.1-0.2 mm.

Technical Field

The invention relates to the technical field of pipelines, in particular to a double-layer pipeline.

Background

The double-layer composite pipeline has the characteristics of convenience in installation, low manufacturing cost, good corrosion resistance and the like, so that the pipeline is widely applied to the industry of gas stations. However, the overall strength of the existing double-layer pipeline still needs to be improved, and the connection stability and the operation convenience between the two layers of pipelines still need to be improved.

Disclosure of Invention

The purpose of the invention is: overcomes the defects in the prior art and provides a double-layer pipeline with high overall strength.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a double-deck pipeline, includes inlayer pipeline and outer pipeline, through arch and spread groove fixed connection between inlayer pipeline and the outer pipeline, the surface of inlayer pipeline is equipped with a plurality of beads, the internal surface of outer pipeline has the spread groove, the internal surface of inlayer pipeline has round stainless steel pipeline, establish through the cover between inlayer pipeline and the stainless steel pipeline and be connected.

Further, the inner layer pipeline and the stainless steel pipeline are connected through a hot melting method.

Furthermore, the convex ribs are arranged along the length direction of the inner layer pipeline.

Furthermore, the longitudinal section of the convex edge is triangular, and the longitudinal section of the connecting groove is triangular.

Furthermore, the triangle is an equilateral triangle, and the side length of the equilateral triangle is 0.5-0.8 mm.

Furthermore, the rib and the inner layer pipeline are of an integral structure.

Further, the inner surface of the inner-layer pipeline is a rough surface.

Furthermore, the rough surface is composed of a plurality of oblique lines which are arranged in parallel.

Further, the inclination angle of the oblique line is 30-45 degrees.

Furthermore, the longitudinal section of the oblique line is triangular, and the height of the oblique line is 0.1-0.2 mm.

The technical scheme adopted by the invention has the beneficial effects that:

the double-layer pipeline comprises an inner layer pipeline and an outer layer pipeline, wherein the inner layer pipeline and the outer layer pipeline are fixedly connected through a bulge and a connecting groove, a plurality of convex edges are arranged on the outer surface of the inner layer pipeline, the connecting groove is formed in the inner surface of the outer layer pipeline, the connecting strength between the inner layer pipeline and the outer layer pipeline is higher, and therefore the overall strength of the double-layer pipeline is improved.

Drawings

Fig. 1 is a schematic structural view of a double-layered pipe according to the present invention.

In the figure: 1 stainless steel pipeline, 2 inner layer pipelines and 3 outer layer pipelines.

Detailed Description

The invention will now be further described with reference to the drawings and specific examples.

Example 1

Referring to fig. 1, a double-layer pipeline includes an inner-layer pipeline 2 and an outer-layer pipeline, the inner-layer pipeline 2 and the outer-layer pipeline 3 are fixedly connected through a protrusion and a connecting groove, the outer surface of the inner-layer pipeline 2 is provided with a plurality of ribs, the inner surface of the outer-layer pipeline 3 is provided with a connecting groove, the inner surface of the inner-layer pipeline 2 is provided with a circle of stainless steel pipeline 1, the inner-layer pipeline 2 and the stainless steel pipeline 1 are connected through a sleeve, the inner-layer pipeline 2 and the stainless steel pipeline 1 are connected through a hot melting method, the ribs are arranged along the length direction of the inner-layer pipeline 2, the longitudinal cut of the ribs is triangular, the longitudinal cut of the connecting groove is triangular, the triangular is an equilateral triangle, the side length of the equilateral triangle is 0.5mm, the ribs and the inner-layer pipeline 2 are of an integral structure, the inner surface of the inner, the inclination angle of the oblique line is 30 degrees, the longitudinal section of the oblique line is triangular, and the height of the oblique line is 0.1 mm.

Example 2

Referring to fig. 1, a double-layer pipeline includes an inner-layer pipeline 2 and an outer-layer pipeline 3, the inner-layer pipeline 2 and the outer-layer pipeline 3 are fixedly connected through a protrusion and a connecting groove, a plurality of ribs are arranged on the outer surface of the inner-layer pipeline 2, a connecting groove is arranged on the inner surface of the outer-layer pipeline 3, a circle of stainless steel pipeline 1 is arranged on the inner surface of the inner-layer pipeline 2, the inner-layer pipeline 2 and the stainless steel pipeline 1 are connected through a sleeve, the inner-layer pipeline 2 and the stainless steel pipeline 1 are connected through a hot melting method, the ribs are arranged along the length direction of the inner-layer pipeline 2, the longitudinal section of each rib is a triangle, the longitudinal section of each connecting groove is a triangle, the triangle is an equilateral triangle, the side length of the equilateral triangle is 0.6mm, the ribs and the inner-layer pipeline 2 are integrated, the inner surface of the inner-layer, the inclination angle of the oblique line is 35 degrees, the longitudinal section of the oblique line is triangular, and the height of the oblique line is 0.15 mm.

Example 3

Referring to fig. 1, a double-layer pipeline includes an inner-layer pipeline 2 and an outer-layer pipeline 3, the inner-layer pipeline 2 and the outer-layer pipeline 3 are fixedly connected through a protrusion and a connecting groove, a plurality of ribs are arranged on the outer surface of the inner-layer pipeline 2, a connecting groove is arranged on the inner surface of the outer-layer pipeline 3, a circle of stainless steel pipeline 1 is arranged on the inner surface of the inner-layer pipeline 2, the inner-layer pipeline 2 and the stainless steel pipeline 1 are connected through a sleeve, the inner-layer pipeline 2 and the stainless steel pipeline 1 are connected through a hot melting method, the ribs are arranged along the length direction of the inner-layer pipeline 2, the longitudinal section of each rib is a triangle, the longitudinal section of each connecting groove is a triangle, the triangle is an equilateral triangle, the side length of the equilateral triangle is 0.8mm, the ribs and the inner-layer pipeline 2 are integrated, the inner surface of the inner-layer, the inclination angle of the oblique line is 45 degrees, the longitudinal section of the oblique line is triangular, and the height of the oblique line is 0.2 mm.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.