阅读说明：本技术 一种高强度耐腐蚀的聚乙烯复合管材 (High-strength corrosion-resistant polyethylene composite pipe ) 是由 杜剑波 阮国辉 李定峰 于 2020-11-26 设计创作，主要内容包括：本发明公开了一种高强度耐腐蚀的聚乙烯复合管材,包括内层管、中部加强层、多个加强环、外层管。内层管采用聚乙烯材料制成。中部加强层采用高强度铝合金制成,中部加强层包括多根贴附于所述内层管外表面的加强条。加强环间隔设置于中部加强层的外表面,且通过焊接的方式与中部加强层的加强条进行固定,加强条采用高强度铝合金制成。外层管采用聚乙烯材料制成,外层管覆盖于所述中部加强层、内层管以及加强环的外表面。通过内层管以及外层管将中部的加强环与加强条包裹,而中部的加强环与加强条可以加强管材整体的强度,进而使得聚乙烯复合管材具有高强度以及耐腐蚀的优点,进而可以适用于具有强度以及耐腐蚀性能要求的场所。(The invention discloses a high-strength corrosion-resistant polyethylene composite pipe, which comprises an inner layer pipe, a middle reinforcing layer, a plurality of reinforcing rings and an outer layer pipe. The inner layer pipe is made of polyethylene material. The middle reinforcing layer is made of high-strength aluminum alloy and comprises a plurality of reinforcing strips attached to the outer surface of the inner-layer pipe. The strengthening ring interval sets up in the surface of middle part enhancement layer, and fixes through the reinforcing bar of welded mode and middle part enhancement layer, and the reinforcing bar adopts high strength aluminum alloy to make. The outer layer pipe is made of polyethylene material and covers the outer surfaces of the middle reinforcing layer, the inner layer pipe and the reinforcing ring. The reinforcing ring and the reinforcing strip at the middle part are wrapped by the inner layer pipe and the outer layer pipe, the reinforcing ring and the reinforcing strip at the middle part can reinforce the overall strength of the pipe, so that the polyethylene composite pipe has the advantages of high strength and corrosion resistance, and can be applied to places with strength and corrosion resistance requirements.)

1. A high-strength corrosion-resistant polyethylene composite pipe, comprising:

the inner layer pipe is made of a polyethylene material;

the middle reinforcing layer is made of high-strength aluminum alloy and comprises a plurality of reinforcing strips attached to the outer surface of the inner-layer pipe and used for reinforcing the strength of the pipeline;

the reinforcing rings are arranged on the outer surface of the middle reinforcing layer at intervals and fixed with reinforcing strips of the middle reinforcing layer in a welding mode, and the reinforcing strips are made of high-strength aluminum alloy;

the outer layer pipe is made of polyethylene materials, covers the outer surfaces of the middle reinforcing layer, the inner layer pipe and the reinforcing ring, and is used for preventing the middle reinforcing layer and the reinforcing ring from being corroded.

2. The high-strength corrosion-resistant polyethylene composite pipe according to claim 1, wherein:

the middle reinforcing layer comprises 6 reinforcing strips, and the 6 reinforcing strips are uniformly distributed on the outer surface of the inner-layer pipe.

3. The high-strength corrosion-resistant polyethylene composite pipe according to claim 1, wherein:

the cross-section of strengthening the strip is crescent, strengthen the inner ring camber of strip with the surface circle's of inlayer pipe camber is the same, strengthen the outer loop camber of strip with the inner circle camber of beaded finish is the same, makes strengthen the internal surface of strip and hug closely inlayer pipe, strengthen the external surface of strip with the internal surface in close contact with of beaded finish.

4. The high-strength corrosion-resistant polyethylene composite pipe according to claim 1, wherein:

the outer surface of the reinforcing ring is provided with a fillet for reducing the stress concentration at the edge of the reinforcing ring on the outer layer pipe.

5. The high-strength corrosion-resistant polyethylene composite pipe according to claim 1, wherein:

the distance between the two reinforcing rings is any value between 10 and 15 times of the inner diameter of the inner-layer pipe.

Technical Field

The invention relates to the field of pipes, in particular to a high-strength corrosion-resistant polyethylene composite pipe.

Background

The pipe is a necessary material for building engineering, and commonly used materials comprise a water supply pipe, a water discharge pipe, a gas pipe, a heating pipe, an electric wire conduit, a rainwater pipe and the like. The existing pipe can be divided into a metal pipe and a plastic pipe according to the material, but the metal pipe has the problem of high strength but is easy to corrode, and the plastic pipe (such as a polyethylene pipe) has the problem of low strength although being relatively corrosion-resistant, so that the advantages of high strength and corrosion resistance can not be achieved.

Disclosure of Invention

In order to overcome the defect that the pipe in the prior art cannot meet the requirements of high strength and corrosion resistance at the same time, the invention aims to solve the problem of providing the high-strength corrosion-resistant polyethylene composite pipe which has the advantages of high strength and corrosion resistance and can be further suitable for places with the requirements of strength and corrosion resistance.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a high-strength corrosion-resistant polyethylene composite pipe, which comprises:

the inner layer pipe is made of a polyethylene material;

the middle reinforcing layer is made of high-strength aluminum alloy and comprises a plurality of reinforcing strips attached to the outer surface of the inner-layer pipe and used for reinforcing the strength of the pipeline;

the reinforcing rings are arranged on the outer surface of the middle reinforcing layer at intervals and fixed with reinforcing strips of the middle reinforcing layer in a welding mode, and the reinforcing strips are made of high-strength aluminum alloy;

the outer layer pipe is made of polyethylene materials, covers the outer surfaces of the middle reinforcing layer, the inner layer pipe and the reinforcing ring, and is used for preventing the middle reinforcing layer and the reinforcing ring from being corroded.

Preferably, the middle reinforcing layer comprises 6 reinforcing strips, and the 6 reinforcing strips are uniformly distributed on the outer surface of the inner-layer pipe.

Preferably, the cross section of the reinforcing strip is crescent, the curvature of an inner ring of the reinforcing strip is the same as that of an outer surface circle of the inner-layer pipe, the curvature of an outer ring of the reinforcing strip is the same as that of an inner ring of the reinforcing ring, so that the inner surface of the reinforcing strip is tightly attached to the inner-layer pipe, and the outer surface of the reinforcing strip is in close contact with the inner surface of the reinforcing ring.

Preferably, the outer surface of each reinforcing ring is provided with a fillet for reducing the stress concentration at the edge of the reinforcing ring on the outer pipe.

Preferably, the distance between the two reinforcing rings is any value between 10 and 15 times the inner diameter of the inner pipe.

The invention has the beneficial effects that:

the invention provides a high-strength corrosion-resistant polyethylene composite pipe, which comprises an inner layer pipe, a middle reinforcing layer, a plurality of reinforcing rings and an outer layer pipe. The inner layer pipe is made of polyethylene material. The middle reinforcing layer is made of high-strength aluminum alloy and comprises a plurality of reinforcing strips attached to the outer surface of the inner-layer pipe and used for reinforcing the strength of the pipeline. The strengthening ring interval sets up in the surface of middle part enhancement layer, and fixes through the reinforcing bar of welded mode and middle part enhancement layer, and the reinforcing bar adopts high strength aluminum alloy to make. The outer layer pipe is made of polyethylene materials, covers the outer surfaces of the middle reinforcing layer, the inner layer pipe and the reinforcing ring and is used for preventing the middle reinforcing layer and the reinforcing ring from being corroded. Through inlayer pipe and outer pipe with the beaded finish and the reinforcing bar parcel at middle part, prevent that beaded finish and reinforcing bar from being corroded (polyethylene plastics have good anticorrosive performance), and the beaded finish and the reinforcing bar at middle part can strengthen the holistic intensity of tubular product, and then make the compound tubular product of polyethylene have high strength and corrosion-resistant advantage, and then can be applicable to the place that has intensity and corrosion resistance requirement. And the combination of the reinforcing rings and the reinforcing strips is adopted instead of a whole reinforcing metal pipe, so that the weight of the pipe can be greatly reduced, and the pipe has the advantage of light weight.

The section through will strengthen the strip sets up to crescent to the inner ring camber that makes the enhancement strip is the same with the outer surface circle's of inlayer pipe camber, and the outer loop camber of strengthening the strip is the same with the inner circle camber of beaded finish, makes the inlayer pipe hugged closely to the internal surface of strengthening the strip, the internal surface in close contact with of the surface of strengthening the strip and beaded finish. And then make and closely cooperate between inlayer pipe, reinforcing bar, the beaded finish, improve additional strengthening's enhancement effect.

By providing the outer surface of the reinforcing ring with a rounded corner, stress concentration at the edge of the reinforcing ring on the outer tube is reduced (stress concentration is reduced in the form of a smooth transition).

Drawings

FIG. 1 is a schematic structural diagram of a high-strength corrosion-resistant polyethylene composite pipe disclosed in the present invention;

3 FIG. 3 2 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 at 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3

Fig. 3 is an appearance view of the high strength corrosion resistant polyethylene composite pipe.

In the figure:

1. an inner layer tube; 2. a middle reinforcing layer; 3. a reinforcement ring; 4. an outer tube.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in figures 1 to 3 of the drawings,

the high-strength corrosion-resistant polyethylene composite pipe provided in the embodiment comprises an inner layer pipe, a middle reinforcing layer, a plurality of reinforcing rings and an outer layer pipe. The inner layer pipe is made of polyethylene material; the middle reinforcing layer is made of high-strength aluminum alloy and comprises a plurality of reinforcing strips attached to the outer surface of the inner-layer pipe and used for reinforcing the strength of the pipeline; the reinforcing rings are arranged on the outer surface of the middle reinforcing layer at intervals and are fixed with reinforcing strips of the middle reinforcing layer in a welding mode, and the reinforcing strips are made of high-strength aluminum alloy; the outer layer pipe is made of polyethylene materials, covers the outer surfaces of the middle reinforcing layer, the inner layer pipe and the reinforcing ring, and is used for preventing the middle reinforcing layer and the reinforcing ring from being corroded. Through inlayer pipe and outer pipe with the beaded finish and the reinforcing bar parcel at middle part, prevent that beaded finish and reinforcing bar from being corroded (polyethylene plastics have good anticorrosive performance), and the beaded finish and the reinforcing bar at middle part can strengthen the holistic intensity of tubular product, and then make the compound tubular product of polyethylene have high strength and corrosion-resistant advantage, and then can be applicable to the place that has intensity and corrosion resistance requirement. And the combination of the reinforcing rings and the reinforcing strips is adopted instead of a whole reinforcing metal pipe, so that the weight of the pipe can be greatly reduced, and the pipe has the advantage of light weight.

Further, the middle reinforcing layer comprises 6 reinforcing strips, and the 6 reinforcing strips are uniformly distributed on the outer surface of the inner-layer pipe. Through the outer surface with the enhancement strip evenly distributed at the inlayer pipe of middle part enhancement layer for can evenly strengthen each position of tubular product when strengthening the strip, improve the enhancement effect of middle part enhancement layer.

Furthermore, the cross-section of the reinforcing strip is crescent, the curvature of an inner ring of the reinforcing strip is the same as that of the outer surface circle of the inner-layer pipe, the curvature of an outer ring of the reinforcing strip is the same as that of the inner ring of the reinforcing ring, the inner surface of the reinforcing strip is tightly attached to the inner-layer pipe, and the outer surface of the reinforcing strip is in close contact with the inner surface of the reinforcing ring.

Furthermore, the outer surface of the reinforcing ring is provided with a fillet for reducing the stress concentration condition at the edge of the reinforcing ring on the outer layer pipe.

Further, the distance between the two reinforcing rings is any value between 10 and 15 times of the inner diameter of the inner layer pipe.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.