Titanium-magnesium-aluminum alloy lined pbx composite pipe

Abstract

The utility model discloses titanium magnesium aluminum alloy lining PBX composite pipe belongs to composite pipe technical field, including inner layer pipe body, bonding transition layer, buffer support layer, anticorrosive isolation layer and wear -resistant protective layer, buffer support layer includes titanium magnesium aluminum alloy layer and the pure aluminum layer of welding in titanium magnesium aluminum alloy layer outer surface, titanium magnesium aluminum alloy layer is bonded in the outside of inner layer pipe body through bonding transition layer, anticorrosive isolation layer is bonded in the outside of pure aluminum layer through resin hot melt, wear -resistant protective layer is bonded in the outside of anticorrosive isolation layer through resin hot melt, through the setting of buffer support layer, can provide effective support strength for inner layer pipe body, and pure aluminum layer can absorb pipeline thermal expansion and contraction stress, avoid inner layer pipe body cracking, through the setting of anticorrosive isolation layer and wear -resistant protective layer, can carry out double protection to inner layer pipe body, prolong the service life of inner layer pipe body.

Description

Technical Field

[0001] This utility model belongs to the field of composite pipe technology, specifically relating to titanium-magnesium-aluminum alloy lined PBX composite pipe. Background Technology

[0002] In municipal water supply, chemical media transportation, agricultural irrigation, and industrial circulating water systems, pipelines serve as the core carriers of fluid transmission, and their performance directly determines the safety, stability, and service life of the transportation system. As various industries continuously increase their demands for transportation efficiency, media purity, and equipment maintenance costs, traditional single-material pipelines are no longer sufficient to meet the needs of complex operating conditions. Composite pipes, combining the advantages of different materials (such as the high strength of metals and the corrosion resistance of plastics), are gradually becoming the mainstream development direction in pipeline technology.

[0003] Currently, the mainstream composite pipe products on the market mainly include steel-plastic composite pipes, aluminum-plastic composite pipes, and pure plastic reinforced pipes. However, there are still many technical defects in practical applications. Existing steel-plastic composite pipes mostly use carbon steel as the support layer and plastic (such as PE, PPR) as the inner layer. Although they have certain compressive strength and corrosion resistance, the high density of the carbon steel layer leads to a higher overall weight of the pipe, increasing transportation and installation costs. At the same time, carbon steel is prone to electrochemical corrosion in humid soil, acidic or alkaline soil, or transport environments containing electrolytes. Even with simple galvanizing or painting for corrosion protection, rust will still appear after long-term use, which will then contaminate the transported medium (especially municipal drinking water). Furthermore, rust will weaken the strength of the support layer, leading to a significant increase in the risk of pipe rupture and leakage. Furthermore, the thermal expansion coefficients of carbon steel and the plastic inner layer differ significantly. Under conditions of temperature fluctuations (such as freezing and heave in winter and exposure to high temperatures in summer), shear stress is easily generated between the layers, leading to cracking of the plastic inner layer or peeling off from the steel layer, thus losing its media isolation function. Existing aluminum-plastic composite pipes typically use pure aluminum strips as the intermediate layer. Although this can improve the rigidity of the pipe to a certain extent, pure aluminum has low strength and is prone to deformation when buried or subjected to external impacts (such as collisions with construction machinery), failing to provide stable support for the inner plastic layer. Moreover, most aluminum-plastic composite pipes use adhesives to bond the aluminum and plastic layers. These adhesives are prone to aging and failure in high-temperature (>60℃) or oily media environments, leading to delamination between the layers and causing pipe leakage. Meanwhile, pure aluminum layers lack a structural design to buffer thermal stress. When the pipe expands or contracts due to temperature changes, the stress is directly transferred to the inner plastic layer, easily causing cracking. This is especially true in cold northern regions during winter, where the pipes suffer high damage rates after freezing and swelling. Pure plastic pipes made of PVC, PE, PPR, etc., are lightweight and corrosion-resistant, but they have poor rigidity and impact resistance. After being buried, they are prone to permanent deformation due to soil pressure or external loads (such as vehicle traffic), resulting in a reduced flow cross-section and affecting transport efficiency. Some reinforced plastic pipes (such as glass fiber reinforced PE pipes) have improved strength, but the glass fiber is prone to peeling from the plastic matrix and has poor resistance to ultraviolet aging. When laid outdoors, the surface is prone to cracking, and the service life is usually short.

[0004] Therefore, a titanium-magnesium-aluminum alloy-lined PBX composite pipe with high strength support, effective absorption of thermal expansion and contraction stress, and dual protection is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a titanium-magnesium-aluminum alloy-lined PBX composite pipe to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a titanium-magnesium-aluminum alloy-lined PBX composite pipe, comprising an inner pipe body, a bonding transition layer, a buffer support layer, an anti-corrosion isolation layer, and a wear-resistant protective layer. The buffer support layer comprises a titanium-magnesium-aluminum alloy layer and a pure aluminum layer welded to the outer surface of the titanium-magnesium-aluminum alloy layer. The titanium-magnesium-aluminum alloy layer is bonded to the outside of the inner pipe body through the bonding transition layer. The anti-corrosion isolation layer is bonded to the outside of the pure aluminum layer by resin hot-melt bonding. The wear-resistant protective layer is bonded to the outside of the anti-corrosion isolation layer by resin hot-melt bonding.

[0007] In a preferred embodiment, the inner tube is made of PBX material.

[0008] In a preferred embodiment, the bonding transition layer is made of EVA material.

[0009] In a preferred embodiment, the pure aluminum layer has a wavy structure.

[0010] In a preferred embodiment, the anti-corrosion isolation layer is made of HDPE material.

[0011] In a preferred embodiment, the wear-resistant protective layer is made of polyamide material.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This titanium-magnesium-aluminum alloy-lined PBX composite pipe, through the setting of a buffer support layer, the titanium-magnesium-aluminum alloy layer has a certain compressive strength, which can provide effective support strength for the inner pipe body, and the pure aluminum layer can absorb the thermal expansion and contraction stress of the pipe, reduce the interlayer shear force, and prevent the inner pipe body from cracking. This titanium-magnesium-aluminum alloy-lined PBX composite pipe, through the setting of an anti-corrosion isolation layer, can isolate soil electrolytes and oxygen, preventing electrochemical corrosion of the titanium-magnesium-aluminum alloy layer. Through the setting of a wear-resistant protective layer, the polyamide material has high hardness and can resist external impact friction and ultraviolet aging. Together with the anti-corrosion isolation layer, the inner pipe body is doubly protected, extending the service life of the inner pipe body. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the buffer support layer of this utility model.

[0014] In the diagram: 1. Inner tube; 2. Bonding transition layer; 3. Buffer support layer; 31. Titanium-magnesium-aluminum alloy layer; 32. Pure aluminum layer; 4. Anti-corrosion isolation layer; 5. Wear-resistant protective layer. Detailed Implementation

[0015] The present invention will be further described below with reference to the embodiments.

[0016] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0017] Please see Figure 1-2 This utility model provides a titanium-magnesium-aluminum alloy lined PBX composite pipe, including an inner pipe body 1, a bonding transition layer 2, a buffer support layer 3, an anti-corrosion isolation layer 4, and a wear-resistant protective layer 5. The inner pipe body 1 is made of PBX material. PBX is a polybutene modified material with the characteristics of high temperature resistance, low temperature resistance, and acid and alkali corrosion resistance, which prevents media penetration.

[0018] The buffer support layer 3 includes a titanium-magnesium-aluminum alloy layer 31 and a pure aluminum layer 32 welded to the outer surface of the titanium-magnesium-aluminum alloy layer 31. The titanium-magnesium-aluminum alloy layer 31 is bonded to the outside of the inner tube 1 through an adhesive transition layer 2. The adhesive transition layer 2 is made of EVA material. The pure aluminum layer 32 has a corrugated structure. With the setting of the buffer support layer 3, the titanium-magnesium-aluminum alloy layer 31 has a certain compressive strength and can provide effective support strength for the inner tube 1. The pure aluminum layer 32 can absorb the thermal expansion and contraction stress of the pipeline, reduce the interlayer shear force, and prevent the inner tube 1 from cracking.

[0019] The anti-corrosion isolation layer 4 is bonded to the outside of the pure aluminum layer 32 by resin hot-melt bonding. The anti-corrosion isolation layer 4 is made of HDPE material. By setting the anti-corrosion isolation layer 4, the soil electrolyte and oxygen can be isolated, preventing electrochemical corrosion of the titanium-magnesium-aluminum alloy layer 31.

[0020] The wear-resistant protective layer 5 is bonded to the outside of the anti-corrosion isolation layer 4 by resin hot-melt bonding. The wear-resistant protective layer 5 is made of polyamide material. With the setting of the wear-resistant protective layer 5, the polyamide material has high hardness and can resist external impact friction and ultraviolet aging. Together with the anti-corrosion isolation layer 4, it provides double protection for the inner tube 1 and extends the service life of the inner tube 1.

[0021] The working principle and usage process of this utility model are as follows: First, through the setting of the buffer support layer 3, the titanium-magnesium-aluminum alloy layer 31 has a certain compressive strength, which can provide effective support strength for the inner pipe 1. The pure aluminum layer 32 can absorb the thermal expansion and contraction stress of the pipeline, reduce the interlayer shear force, and prevent the inner pipe 1 from cracking. Through the setting of the anti-corrosion isolation layer 4, the soil electrolyte and oxygen can be isolated to prevent the titanium-magnesium-aluminum alloy layer 31 from electrochemical corrosion. Through the setting of the wear-resistant protective layer 5, the polyamide material has high hardness and can resist external impact friction and ultraviolet aging. Together with the anti-corrosion isolation layer 4, the inner pipe 1 is given double protection, which extends the service life of the inner pipe 1.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A titanium-magnesium-aluminum alloy lined PBX composite pipe, comprising an inner pipe body (1), a bonding transition layer (2), a buffer support layer (3), an anti-corrosion isolation layer (4), and a wear-resistant protective layer (5), characterized in that: The buffer support layer (3) includes a titanium-magnesium-aluminum alloy layer (31) and a pure aluminum layer (32) welded to the outer surface of the titanium-magnesium-aluminum alloy layer (31). The titanium-magnesium-aluminum alloy layer (31) is bonded to the outside of the inner tube body (1) through an adhesive transition layer (2). The anti-corrosion isolation layer (4) is bonded to the outside of the pure aluminum layer (32) by resin hot melt bonding. The wear-resistant protective layer (5) is bonded to the outside of the anti-corrosion isolation layer (4) by resin hot melt bonding.

2. The titanium-magnesium-aluminum alloy-lined PBX composite pipe according to claim 1, characterized in that: The inner tube (1) is made of PBX material.

3. The titanium-magnesium-aluminum alloy-lined PBX composite pipe according to claim 1, characterized in that: The bonding transition layer (2) is made of EVA material.

4. The titanium-magnesium-aluminum alloy-lined PBX composite pipe according to claim 1, characterized in that: The pure aluminum layer (32) has a corrugated structure.

5. The titanium-magnesium-aluminum alloy-lined PBX composite pipe according to claim 1, characterized in that: The anti-corrosion isolation layer (4) is made of HDPE material.

6. The titanium-magnesium-aluminum alloy-lined PBX composite pipe according to claim 1, characterized in that: The wear-resistant protective layer (5) is made of polyamide material.

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