Shape-maintaining multi-layer anti-explosion PE pipe

Abstract

The invention provides a shape-preserving multi-layer anti-explosion PE pipe, and relates to the technical field of PE pipes, the shape-preserving multi-layer anti-explosion PE pipe comprises a first PE pipe, a connecting pipe and a second PE pipe, the connecting pipe is arranged at the joint of the first PE pipe and the second PE pipe, the first PE pipe and the second PE pipe are the same in structure, inner cavities of the first PE pipe, the connecting pipe and the second PE pipe are communicated, a clamping block is arranged on the surface of the middle of the connecting pipe, and a clamping groove is formed in the middle of the clamping block. Clamping grooves matched with the first PE pipe and the second PE pipe in pipe diameter are formed in the two sides of the clamping block correspondingly, protective grooves are formed in the top walls of the clamping grooves, a plurality of needling heads, water storage films and expansion water absorption strips are arranged in the protective grooves correspondingly, the multiple needling heads are installed in the circumferential direction of the inner walls of the protective grooves at equal intervals, and the water storage films are located between the needling heads and the expansion water absorption strips; the water storage film and the expansion water absorption strip are bonded to the inner wall of the protection groove, the inner side of the expansion water absorption strip is attached to the surface of the first PE pipe and the surface of the second PE pipe, by arranging the protection groove and the related expansion water absorption strip, the pipe body can be extruded through expansion, rapid blocking is achieved, and water leakage is avoided.

Description

Technical Field

[0001] This invention relates to the field of PE pipe technology, and more particularly to shape-retaining multilayer explosion-proof PE pipe. Background Technology

[0002] In the field of pipeline transportation, PE pipes are widely used in many industries such as water supply, gas, and chemical industries due to their advantages such as light weight, corrosion resistance, and easy installation. However, traditional PE pipes have a series of obvious defects when dealing with abnormally high internal pressure.

[0003] When the pressure inside the pipe suddenly increases due to various reasons (such as equipment failure, operational errors, or rapid temperature changes), traditional PE pipes lack effective pressure release and self-protection mechanisms. Excessive pressure can generate enormous stress on the pipe body, causing it to expand, deform, or even rupture. Once a pipe ruptures, it not only causes leakage of the transported medium and wastes resources but may also pollute the surrounding environment. For example, in gas pipelines, gas leaks can trigger fires, explosions, and other serious safety accidents, threatening people's lives and property; in chemical raw material pipelines, leaks of harmful chemicals can cause long-term and irreparable damage to the soil, water sources, and other ecological environments.

[0004] Furthermore, traditional PE pipes are unable to quickly and effectively prevent the further expansion of leaks when pressure is abnormal. Due to the lack of an active sealing mechanism, the leak will continue until staff discover and take repair measures. This not only increases the difficulty and cost of repairs, but also prolongs the downtime and causes huge economic losses to enterprises.

[0005] Therefore, it is necessary to provide a new type of conformal multilayer explosion-proof PE pipe to solve the above-mentioned technical problems. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides a conformal multilayer explosion-proof PE pipe.

[0007] The conformal multilayer explosion-proof PE pipe provided by the present invention includes a first PE pipe, a connecting pipe, and a second PE pipe. The connecting pipe is disposed at the connection between the first PE pipe and the second PE pipe. The first PE pipe and the second PE pipe have the same structure, and the inner cavities of the first PE pipe, the connecting pipe, and the second PE pipe are interconnected. A locking block is provided on the middle surface of the connecting pipe. The two sides of the locking block are respectively provided with locking grooves that match the diameter of the first PE pipe and the second PE pipe. A protective groove is provided on the top wall of the locking groove. Multiple needle heads, a water-retaining film, and an expansion water-absorbing strip are respectively provided inside the protective groove. The multiple needle heads are installed at equal intervals along the circumference of the inner wall of the protective groove. The water-retaining film is located between the needle heads and the expansion water-absorbing strip. The water-retaining film and the expansion water-absorbing strip are respectively adhered to the inner wall of the protective groove, and the inner side of the expansion water-absorbing strip is in contact with the surface of the first PE pipe and the second PE pipe.

[0008] Furthermore, the first PE pipe includes an inner PE layer, a reinforcing layer, a rubber layer, and an outer PE layer, wherein the inner PE layer, the reinforcing layer, the rubber layer, and the outer PE layer are arranged sequentially from the inside to the outside.

[0009] Furthermore, both ends of the connecting pipe are threaded to the inner walls of the first PE pipe and the second PE pipe, respectively.

[0010] Furthermore, the inner walls of both slots are provided with waterproof gaskets, and one side of each waterproof gasket is respectively attached to the end of the first PE pipe and the end of the second PE pipe.

[0011] Furthermore, the reinforcing layer includes a plurality of interlaced fiber strips and a reinforcing tube. The plurality of fiber strips are wound around the outer surface of the PE inner layer and encapsulated between the reinforcing tube and the PE inner layer by hot melt adhesive or PE resin.

[0012] Furthermore, the outer surface of the PE outer layer is coated with a wear-resistant coating.

[0013] Furthermore, the inner surface of the PE inner layer is coated with an anti-corrosion coating.

[0014] Furthermore, the materials of the first PE pipe, the connecting pipe, and the second PE pipe all contain a degradation agent.

[0015] Compared with related technologies, the conformal multilayer explosion-proof PE pipe provided by the present invention has the following beneficial effects:

[0016] This invention provides a conformal multilayer explosion-proof PE pipe. In specific implementation, by setting a protective groove and related expansion absorbent strips, when the pressure inside the pipe rises abnormally, the strong pressure will cause the needle head to squeeze the water storage film, causing the water storage film to rupture and release the water stored therein. The expansion absorbent strips expand rapidly. Since the expansion absorbent strips are attached to the surfaces of the first PE pipe and the second PE pipe, their expansion will exert a squeezing effect on the pipe body, quickly sealing and preventing water leakage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the conformal multilayer explosion-proof PE pipe provided by the present invention;

[0018] Figure 2 This is a cross-sectional view of the conformal multilayer explosion-proof PE pipe provided by the present invention.

[0019] Figure 3 for Figure 2 The enlarged structural diagram at point A is shown below;

[0020] Figure 4 for Figure 2 The enlarged structural diagram at point B is shown below;

[0021] Figure 5 This is a schematic diagram of the structure of the fiber strip provided by the present invention;

[0022] Figure 6 This is a schematic diagram of the connecting pipe provided by the present invention.

[0023] The following are the labels in the diagram: 1. First PE pipe; 2. Connecting pipe; 3. Second PE pipe; 4. Clamping block; 5. Clamping groove; 6. Protective groove; 7. Needle head; 8. Water storage film; 9. Expansion absorbent strip; 10. Inner PE layer; 11. Reinforcing layer; 12. Rubber layer; 13. Outer PE layer; 14. Waterproof gasket; 15. Fiber strip; 16. Reinforcing pipe. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 ,in, Figure 1 This is a schematic diagram of the overall structure of the conformal multilayer explosion-proof PE pipe provided by the present invention; Figure 2 This is a cross-sectional view of the conformal multilayer explosion-proof PE pipe provided by the present invention. Figure 3 for Figure 2 The enlarged structural diagram at point A is shown below; Figure 4 for Figure 2 The enlarged structural diagram at point B is shown below; Figure 5 This is a schematic diagram of the structure of the fiber strip provided by the present invention; Figure 6 This is a schematic diagram of the connecting pipe provided by the present invention.

[0026] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] In the specific implementation process, such as Figures 1-6 As shown, the type-protected multilayer explosion-proof PE pipe includes a first PE pipe 1, a connecting pipe 2, and a second PE pipe 3. The connecting pipe 2 is located at the connection between the first PE pipe 1 and the second PE pipe 3. The inner cavities of the first PE pipe 1, the connecting pipe 2, and the second PE pipe 3 are interconnected. A locking block 4 is provided on the middle surface of the connecting pipe 2. The two sides of the locking block 4 are respectively provided with locking grooves 5 that match the pipe diameters of the first PE pipe 1 and the second PE pipe 3. A protective groove 6 is provided on the top wall of the locking groove 5. Multiple needle heads 7, a water-storing film 8, and an expansion water-absorbing strip 9 are respectively provided inside the protective groove 6. The multiple needle heads 7 are installed at equal intervals along the circumference of the inner wall of the protective groove 6. The water-storing film 8 is located between the needle heads 7 and the expansion water-absorbing strip 9. The water-storing film 8 and the expansion water-absorbing strip 9 are respectively bonded to the inner wall of the protective groove 6, and the inner side of the expansion water-absorbing strip 9 is in contact with the surface of the first PE pipe 1 and the second PE pipe 3.

[0029] When the pressure inside the pipe rises abnormally, the strong pressure will cause the needle head 7 to squeeze the water storage film 8, causing the water storage film 8 to rupture and release the water stored inside. The expansion absorbent strip 9 expands rapidly. Since the expansion absorbent strip 9 is attached to the surface of the first PE pipe and the second PE pipe, its expansion will exert a squeezing effect on the pipe body, quickly sealing and preventing water leakage.

[0030] It should be noted that the inner walls of both slots 5 are provided with waterproof gaskets 14. One side of each waterproof gasket 14 is attached to the end of the first PE pipe 1 and the second PE pipe 3, respectively. When the first PE pipe and the second PE pipe are inserted into the slots 5, one side of the waterproof gasket 14 is attached to their ends, effectively preventing liquid from leaking from the connection and providing a good sealing effect.

[0031] In some embodiments, the first PE pipe 1 includes an inner PE layer 10, a reinforcing layer 11, a rubber layer 12, and an outer PE layer 13. The inner PE layer 10, the reinforcing layer 11, the rubber layer 12, and the outer PE layer 13 are arranged sequentially from the inside to the outside. The outer surface of the outer PE layer 13 is coated with a wear-resistant coating, and the inner surface of the inner PE layer 10 is coated with an anti-corrosion coating, which greatly enhances the strength and pressure resistance of the pipe, making it less prone to deformation or breakage when subjected to internal and external pressure. The rubber layer 12 is located between the reinforcing layer 11 and the outer PE layer, and has a certain elasticity and buffering effect, which can absorb some of the external impact and further protect the pipe. The wear-resistant coating on the outer surface of the outer PE layer can enhance the wear resistance of the outer surface of the pipe and reduce damage caused by friction during installation and use.

[0032] It should be noted that the first PE pipe 1 and the second PE pipe 3 have the same structure.

[0033] It should be noted that both ends of the connecting pipe 2 are threaded to the inner walls of the first PE pipe 1 and the second PE pipe 3, respectively. The connecting pipe 2 achieves a fixed connection by threading its two ends to the inner walls of the first and second PE pipes. The use of threaded connections and the waterproof gasket 14 ensures a very stable connection between the first PE pipe, connecting pipe 2, and the second PE pipe, capable of withstanding certain external forces without loosening. Simultaneously, the waterproof gasket 14 effectively prevents liquid leakage, ensuring the sealing of the pipeline system and avoiding resource waste and environmental pollution caused by leakage. This design is suitable for transporting various liquid media.

[0034] In some embodiments, the reinforcing layer 11 includes a plurality of interleaved fiber strips 15 and a reinforcing tube 16. The plurality of fiber strips 15 are wound around the outer surface of the PE inner layer 10 and are encapsulated between the reinforcing tube 16 and the PE inner layer 10 by hot melt adhesive or PE resin.

[0035] In some embodiments, the materials of the first PE pipe 1, the connecting pipe 2, and the second PE pipe 3 all contain a degrading agent. Under certain environmental conditions, such as light and microbial action, the degrading agent will promote the gradual decomposition of the pipe material, making the pipe material degradable. This helps to reduce environmental pollution after the pipe material has served its service life and meets environmental protection requirements.

[0036] The working principle provided by this invention is as follows: The connecting pipe 2 is fixedly connected to the inner walls of the first PE pipe and the second PE pipe by threaded connection at both ends. The design of threaded connection and waterproof gasket 14 makes the connection between the first PE pipe, the connecting pipe 2 and the second PE pipe very stable. When the pressure inside the pipe rises abnormally, the strong pressure will cause the needle head 7 to squeeze the water storage film 8, causing the water storage film 8 to rupture and release the water stored therein. The expansion water absorption strip 9 expands rapidly. Since the expansion water absorption strip 9 is attached to the surface of the first PE pipe and the second PE pipe, its expansion will exert a squeezing effect on the pipe body, quickly sealing and preventing water leakage.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A type-resistant multilayer explosion-proof PE pipe, comprising a first PE pipe (1), a connecting pipe (2), and a second PE pipe (3), wherein the connecting pipe (2) is disposed at the connection between the first PE pipe (1) and the second PE pipe (3), the first PE pipe (1) and the second PE pipe (3) have the same structure, and the inner cavities of the first PE pipe (1), the connecting pipe (2), and the second PE pipe (3) are interconnected, characterized in that, The middle surface of the connecting pipe (2) is provided with a locking block (4). On both sides of the locking block (4), there are locking grooves (5) that match the diameter of the first PE pipe (1) and the second PE pipe (3). The top wall of the locking groove (5) is provided with a protective groove (6). Inside the protective groove (6), there are multiple needle heads (7), a water storage film (8) and an expansion water absorption strip (9). The multiple needle heads (7) are installed at equal intervals along the circumference of the inner wall of the protective groove (6). The water storage film (8) is located between the needle heads (7) and the expansion water absorption strip (9). The water storage film (8) and the expansion water absorption strip (9) are respectively bonded to the inner wall of the protective groove (6), and the inner side of the expansion water absorption strip (9) is in contact with the surface of the first PE pipe (1) and the second PE pipe (3).

2. The conformal multilayer explosion-proof PE pipe according to claim 1, characterized in that, The first PE pipe (1) includes an inner PE layer (10), a reinforcing layer (11), a rubber layer (12), and an outer PE layer (13), which are arranged sequentially from the inside to the outside.

3. The conformal multilayer explosion-proof PE pipe according to claim 1, characterized in that, The two ends of the connecting pipe (2) are threaded to the inner walls of the first PE pipe (1) and the second PE pipe (3), respectively.

4. The conformal multilayer explosion-proof PE pipe according to claim 1, characterized in that, The inner walls of the two slots (5) are provided with waterproof gaskets (14), and one side of the two waterproof gaskets (14) is respectively attached to the ends of the first PE pipe (1) and the second PE pipe (3).

5. The conformal multilayer explosion-proof PE pipe according to claim 2, characterized in that, The reinforcing layer (11) includes a plurality of interlaced fiber strips (15) and a reinforcing tube (16). The plurality of fiber strips (15) are wound around the outer surface of the PE inner layer (10) and are encapsulated between the reinforcing tube (16) and the PE inner layer (10) by hot melt adhesive or PE resin.

6. The conformal multilayer explosion-proof PE pipe according to claim 2, characterized in that, The outer surface of the PE outer layer (13) is coated with a wear-resistant coating.

7. The conformal multilayer explosion-proof PE pipe according to claim 2, characterized in that, The inner surface of the PE inner layer (10) is coated with an anti-corrosion coating.

8. The conformal multilayer explosion-proof PE pipe according to claim 2, characterized in that, The materials of the first PE pipe (1), the connecting pipe (2), and the second PE pipe (3) all contain a degradation agent.

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