Aluminum alloy plastic-lined composite pipe

Abstract

The utility model discloses an aluminum alloy plastic-lined composite pipe which comprises a pipe body, an aluminum alloy pipe layer is arranged in the pipe body, a lining layer is arranged on the inner side of the aluminum alloy pipe layer, and a water stop cavity is formed in one end of the pipe body. The utility model has the beneficial effects that by arranging the water stop cavity, the connecting ring and the water-swellable water stop strip, the connecting ring and the water stop cavity can realize pre-splicing of the pipeline body in the pipeline splicing process, and the water-swellable water stop strip performs secondary sealing on the joint of the pipeline body in the use process, so that the water-swellable water stop strip is prevented from being damaged. Overflow water generated due to process reasons enters the joint of the water stop cavity and the connecting ring in advance, at the moment, the water-swelling water stop strip swells irregularly, the gap where the water stop cavity is connected with the connecting ring can be blocked instantly, then water is prevented from flowing out of the gap, the water leakage phenomenon can be effectively avoided, and the service life of the pipeline body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of composite pipes, and particularly relates to an aluminum alloy plastic-lined composite pipe. Background Art

[0002] The aluminum alloy plastic-lined composite pipe is a new and practical pipeline developed on the basis of traditional plastic pipes, which combines the physical and chemical advantages of metal and plastic materials. It has the advantages of light weight, 100% oxygen barrier, anti-ultraviolet irradiation, clean and sanitary, convenient installation, strong sealing and maintenance-free in the application of water supply pipes, and solves the defects of bending, impact resistance and easy aging of plastic pipes after thermal expansion and contraction in indoor surface installation.

[0003] When the existing aluminum alloy plastic-lined composite pipe is used as a water supply pipe, it needs to be spliced, and the splicing part will be affected by various factors (such as the workmanship quality of the staff) and leak after being used for a period of time. At this time, it is necessary to repair it, which not only causes inconvenience to the staff, but also leads to poor connection sealing performance of the pipeline and affects its service life. Therefore, there is an urgent need for an aluminum alloy plastic-lined composite pipe to solve the above problems. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] The technical problem to be solved by the utility model is to provide an aluminum alloy plastic-lined composite pipe that can seal and stop water at the connection of the pipeline, ensure its splicing performance, has a long service life and good use effect according to the current situation of the existing technology.

[0006] (2) Technical Solutions

[0007] The utility model is realized through the following technical solutions: The utility model provides an aluminum alloy plastic-lined composite pipe, which includes a pipeline body. An aluminum alloy pipe layer is arranged inside the pipeline body, a lining layer is arranged inside the aluminum alloy pipe layer, a water stop cavity is opened at one end of the pipeline body, a connection ring matching the specification of the water stop cavity is arranged at the other end of the pipeline body, and a water-swellable water stop strip is arranged on the inner wall of the water stop cavity.

[0008] Furthermore, the aluminum alloy pipe layer is a seamless aluminum pipe formed by heating and extrusion of 6063 deformed aluminum, and its surface is anodized to form an oxide coating.

[0009] By adopting the above technical solutions, as the outer layer of the pipeline body, the aluminum alloy pipe layer can effectively resist the ultraviolet irradiation in the sun, resist aging and enhance the service life of the pipeline, and is especially suitable for surface installation.

[0010] Furthermore, the lining layer is bonded to the aluminum alloy pipe layer, and the material of the lining layer is PE.

[0011] By adopting the above technical solution, the inner liner layer is made of PE material to improve the heat insulation performance of the pipe body.

[0012] Furthermore, an anti-corrosion layer is sprayed on the inner surface of the inner liner layer, and the material of the anti-corrosion layer is polypropylene.

[0013] By adopting the above technical solution, the anti-corrosion layer can improve the corrosion resistance of the pipe body.

[0014] Furthermore, the water stop cavity is formed inside one end of the pipe body, and the depth of the water stop cavity is 20 cm.

[0015] By adopting the above technical solution, the water stop cavity provides a connection space for the connection ring.

[0016] Furthermore, the connection ring is formed at the other end of the pipe body, and the wall thickness of the connection ring is the same as the cavity thickness of the water stop cavity.

[0017] By adopting the above technical solution, the connection ring can be used as a splicing part of the pipe body and can be inserted into the water stop cavity.

[0018] Furthermore, the connection ring is inserted into the water stop cavity, and the length of the connection ring is 20 CM.

[0019] By adopting the above technical solution, the connection ring and the water stop cavity can realize the pre-splicing of the pipe body.

[0020] Furthermore, the water swelling water stop strip is bonded to the inner wall of the water stop cavity, and the water swelling water stop strip is of an annular structure.

[0021] By adopting the above technical solution, when water leakage occurs at the joint of the pipe body due to process reasons, the water swelling water stop strip can perform secondary sealing on the splicing part of the pipe body. The overflow water first enters the joint of the water stop cavity and the connection ring. At this time, the water swelling water stop strip undergoes irregular swelling, and can instantly seal the gap where the water stop cavity is connected to the connection ring, thereby preventing water from flowing out of the gap, effectively avoiding water leakage, and improving the service life of the pipe body.

[0022] (III) Beneficial effects

[0023] The present utility model has the following beneficial effects compared with the prior art:

[0024] To solve the problem that existing aluminum alloy plastic-lined composite pipes need to be spliced when used as water supply pipes, and the spliced joints are affected by various factors (such as the craftsmanship quality of workers), resulting in water leakage after a period of use. At this time, it is necessary to repair them, which not only causes inconvenience to workers, but also leads to poor connection sealing performance of the pipes and affects their service life. The utility model solves this problem by setting a water stop cavity, a connecting ring and a water-swelling water stop strip. During the pipe splicing process, the connecting ring and the water stop cavity can realize the pre-splicing of the pipe body. During use, the water-swelling water stop strip performs secondary sealing on the connection of the pipe body. The overflow water generated due to process reasons first enters the connection between the water stop cavity and the connecting ring. At this time, the water-swelling water stop strip undergoes irregular swelling, and can instantly block the gap between the water stop cavity and the connecting ring, thereby avoiding water from flowing out of the gap, effectively preventing water leakage and improving the service life of the pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. is a schematic structural view of an aluminum alloy plastic-lined composite pipe described in the utility model;

[0026] Figure 2 FIG. is a schematic internal structural view of the pipe body in an aluminum alloy plastic-lined composite pipe described in the utility model;

[0027] Figure 3 FIG. is a main sectional view of the pipe body in an aluminum alloy plastic-lined composite pipe described in the utility model;

[0028] Figure 4 FIG. is in an aluminum alloy plastic-lined composite pipe described in the utility model Figure 3 An enlarged view of part A in.

[0029] The reference numerals are explained as follows:

[0030] 1, pipe body; 2, water stop cavity; 3, connecting ring; 4, aluminum alloy pipe layer; 5, inner lining layer; 6, water-swelling water stop strip; 7, anti-corrosion layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In order to make the purpose, technical solutions and advantages of the utility model clearer, the following further describes the utility model in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0032] As Figures 1-4As shown in the figure, a kind of aluminum alloy plastic-lined composite pipe in this embodiment includes a pipe body 1. An aluminum alloy pipe layer 4 is arranged inside the pipe body 1. As the outer layer of the pipe body 1, the aluminum alloy pipe layer 4 can effectively resist the ultraviolet irradiation in sunlight, enhance the anti-aging property and extend the service life of the pipe. It is especially suitable for surface installation. An inner lining layer 5 is arranged inside the aluminum alloy pipe layer 4. The inner lining layer 5 is made of PE material to improve the heat insulation and heat preservation performance of the pipe body 1. A water stop cavity 2 is formed at one end of the pipe body 1, and a connecting ring 3 matching the specification of the water stop cavity 2 is arranged at the other end of the pipe body 1. The connecting ring 3 and the water stop cavity 2 can realize the pre-splicing of the pipe body 1. A water-swelling water stop strip 6 is arranged on the inner wall of the water stop cavity 2. The water-swelling water stop strip 6 can perform secondary sealing on the splicing part of the pipe body 1 in case of water leakage due to technological reasons at the joint of the pipe body 1. The overflow water first enters the joint of the water stop cavity 2 and the connecting ring 3. At this time, the water-swelling water stop strip 6 expands irregularly, and can instantly seal the gap between the water stop cavity 2 and the connecting ring 3, thereby preventing water from flowing out of the gap and effectively avoiding the occurrence of water leakage phenomenon.

[0033] As Figures 1-4 shown in the figure, in this embodiment, the aluminum alloy pipe layer 4 is a seamless aluminum pipe formed by heating and extruding 6063 deformed aluminum, and its surface is anodized to form an oxide coating. The inner lining layer 5 is bonded to the aluminum alloy pipe layer 4. The material of the inner lining layer 5 is PE, and an anti-corrosion layer 7 is sprayed on the inner surface of the inner lining layer 5. The material of the anti-corrosion layer 7 is polypropylene, and the anti-corrosion layer 7 can improve the corrosion resistance of the pipe body 1.

[0034] As Figures 1-4 shown in the figure, in this embodiment, the water stop cavity 2 is formed inside one end of the pipe body 1. The depth of the water stop cavity 2 is 20 cm. The connecting ring 3 is formed at the other end of the pipe body 1. The wall thickness of the connecting ring 3 is the same as the cavity thickness of the water stop cavity 2. The connecting ring 3 is inserted into the water stop cavity 2. The length of the connecting ring 3 is 20 CM. The water-swelling water stop strip 6 is bonded to the inner wall of the water stop cavity 2, and the water-swelling water stop strip 6 is of an annular structure.

[0035] The specific implementation process of this embodiment is as follows: During the installation process, inserting the connecting ring 3 into the water stop cavity 2 can achieve the pre-splicing of the pipeline body 1. After pre-splicing, the pipeline body 1 is further connected by means of fusion welding. During use, the aluminum alloy pipe layer 4, as the outer layer of the pipeline body 1, can effectively resist the ultraviolet radiation in sunlight and improve its anti-aging performance. The inner lining layer 5 is made of PE material to improve the heat insulation performance of the pipeline body 1. The anti-corrosion layer 7 can improve the corrosion resistance of the pipeline body 1. At the same time, the water-swellable water stop strip 6 performs secondary sealing on the connection of the pipeline body 1. The overflow water generated due to process reasons first enters the connection between the water stop cavity 2 and the connecting ring 3. At this time, the water-swellable water stop strip 6 undergoes irregular expansion, and can instantly seal the gap where the water stop cavity 2 is connected to the connecting ring 3, thereby preventing water from flowing out of the gap, effectively avoiding water leakage, and improving the service life of the pipeline body 1.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plastic-lined aluminum alloy composite pipe, characterized in that: It includes a pipe body (1), an aluminum alloy pipe layer (4) is arranged inside the pipe body (1), a lining layer (5) is arranged inside the aluminum alloy pipe layer (4), a water stop cavity (2) is formed at one end of the pipe body (1), a connecting ring (3) matching the specification of the water stop cavity (2) is arranged at the other end of the pipe body (1), and a water swelling water stop strip (6) is arranged on the inner wall of the water stop cavity (2).

2. The aluminum alloy plastic-lined composite pipe according to claim 1, wherein: The aluminum alloy pipe layer (4) is a seamless aluminum pipe formed by heating and extrusion of 6063 deformed aluminum, and its surface is anodized to form an oxide coating.

3. A kind of aluminum alloy plastic-lined composite pipe according to claim 1, characterized in that: The lining layer (5) is bonded to the aluminum alloy pipe layer (4), and the material of the lining layer (5) is PE.

4. A plastic-lined aluminum alloy composite pipe according to claim 1, characterized in that: An anti-corrosion layer (7) is sprayed on the inner surface of the lining layer (5), and the material of the anti-corrosion layer (7) is polypropylene.

5. The aluminum alloy plastic-lined composite pipe according to claim 4, characterized in that: The water stop cavity (2) is formed inside one end of the pipe body (1), and the depth of the water stop cavity (2) is 20 cm.

6. The aluminum alloy plastic-lined composite pipe according to claim 5, wherein: The connecting ring (3) is formed at the other end of the pipe body (1), and the wall thickness of the connecting ring (3) is the same as the cavity thickness of the water stop cavity (2).

7. The aluminum alloy plastic-lined composite pipe according to claim 6, wherein: The connecting ring (3) is inserted into the water stop cavity (2), and the length of the connecting ring (3) is 20 CM.

8. The aluminum alloy plastic-lined composite pipe according to claim 7, characterized in that: The water swelling water stop strip (6) is bonded to the inner wall of the water stop cavity (2), and the water swelling water stop strip (6) is of a ring structure.

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