A lined composite pipe

Abstract

The utility model relates to a kind of composite pipes, specifically a kind of inner lining composite pipe, including outer tube component, butt joint component is fixed in outer tube component one side, inner tube component is fixed in the inside of outer tube component, inner lining component is set in the inside of inner tube component, and inner tube component includes inner lining pipe, inner lining pipe is fixed in the inside of outer tube component, recess is provided in inner lining pipe one side, flanging is provided in inner lining pipe end, and welding hole two is set in flanging one side, sealing washer two is fixed in flanging one side, and outer tube component includes seamless steel pipe, welding hole one is set in the one side of seamless steel pipe, and rustproof layer one is fixed in the one side of seamless steel pipe.The utility model is set through welding hole one, welding hole two and recess, can effectively make inner lining pipe and seamless steel pipe be fixed together, to ensure that fluid in transport process, even make inner lining pipe have occurred expansion or cold shrinkage etc. Deformation, also can not cause the displacement of inner lining pipe, to ensure the connection stability between inner lining pipe and inner lining pipe.

Description

Technical Field

[0001] This utility model relates to a composite pipe, specifically an inner-lined composite pipe, belonging to the field of composite pipe technology. Background Technology

[0002] Composite-lined steel pipes, as the name suggests, are steel pipes made of different composite materials. They typically consist of two layers: an outer layer of ordinary steel pipe providing structural strength and rigidity; and an inner layer made of corrosion-resistant alloys or special plastics to enhance the pipe's corrosion resistance. This structural design allows composite-lined steel pipes to maintain the original strength and rigidity of the steel pipe while also possessing excellent corrosion resistance.

[0003] Chinese Patent No. CN221743396U provides a corrosion-resistant metal composite pipe, comprising a metal composite pipe body, which includes a composite pipe base layer and a reinforcing layer. One end face of the composite pipe base layer has an annular conical groove and several slots. An arc-shaped locking block is fixedly connected inside each slot. The width of the arc-shaped locking block is less than the depth of the slot, and the length of the arc-shaped locking block is less than the length of the slot. One end of the arc-shaped locking block is spaced apart from the side wall of the slot, and the other end is fixedly connected to the side wall of the slot. The width of the arc-shaped locking block gradually increases from one end to the other. A base plate and several locking rods are fixedly connected to the other end face of the composite pipe base layer. This invention, by setting the conical groove, slots, and locking rods, facilitates the assembly of two composite pipe base layers, resulting in good sealing and strong stability after assembly.

[0004] However, although the above-mentioned case can facilitate the assembly of two composite pipe base layers through conical grooves, slots, and clamps, and the assembled pipe has good sealing and strong firmness, this method has extremely high production requirements. Moreover, when the pipeline is transporting fluid, it is easy to cause various fitting deformations due to expansion, which can lead to the movement of the inner liner pipe.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] The purpose of this utility model is to provide an inner-lined composite pipe in order to solve the above-mentioned problems.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: an inner-lined composite pipe includes an outer pipe assembly, a docking assembly fixed on one side of the outer pipe assembly, an inner pipe assembly fixed inside the outer pipe assembly, an inner lining assembly disposed inside the inner pipe assembly, the inner pipe assembly including an inner lining tube, the inner lining tube fixed inside the outer pipe assembly, a groove provided on one side of the inner lining tube, a flange provided at the end of the inner lining tube, a welding hole two provided on one side of the flange, and a sealing gasket two fixed on one side of the flange.

[0008] Furthermore, the outer tube assembly includes a seamless steel pipe, one side of which has a welding hole and one side of which is fixed with an anti-rust layer.

[0009] Furthermore, an anti-corrosion layer is fixed to one side of the anti-rust layer, an outer paint is fixed to one side of the anti-corrosion layer, and an anti-rust layer is fixed inside the seamless steel pipe.

[0010] Furthermore, a moisture-proof layer is fixed to one side of the second rust-proof layer, and a wear-resistant layer is fixed to one side of the first moisture-proof layer.

[0011] Furthermore, the docking assembly includes a flange, which is fixed to one side of the seamless steel pipe, and a chamfer is provided on one side of the flange.

[0012] Furthermore, a mating hole is provided on one side of the flange, and a sealing gasket is fixed on one side of the flange.

[0013] Furthermore, the inner lining assembly includes a third rust-proof layer, which is fixed inside the inner lining tube. A second moisture-proof layer is fixed to one side of the third rust-proof layer, and an antibacterial layer is fixed to one side of the second moisture-proof layer.

[0014] Furthermore, a second anti-corrosion layer is fixed to one side of the antibacterial layer, and a smoothing layer is fixed to one side of the second anti-corrosion layer.

[0015] The technical effects and advantages of this utility model are as follows: (1) By setting the inner tube assembly and utilizing the second welding hole, the flange can be fixed together with the flange, so that even if the inner lining tube expands and deforms during use, it will not shift. Moreover, the groove setting allows the inner lining tube to be better locked together with the seamless steel pipe, further making the inner lining tube and the seamless steel pipe more stable together. Furthermore, the flange setting can effectively prevent the fluid from corroding the external pipe when the composite pipe is joined because the joint is not the inner lining tube; (2) By setting the inner lining assembly and utilizing the antibacterial layer, it can effectively prevent the fluid from corroding the external pipe. To prevent bacteria in the fluid from adhering to the inner liner, and through the setting of the smooth layer, to prevent impurities in the fluid from adhering to the inner liner, thereby avoiding the presence of moss and other substances on the inner wall of the inner liner due to long-term use; (3) Through the setting of the outer pipe assembly, the setting of the welding hole one can effectively fix the inner liner and the seamless steel pipe together, and the anti-rust layer one can prevent the seamless steel pipe from being corroded by external water vapor. The anti-rust layer two can effectively prevent the seamless steel pipe from being corroded by water vapor generated by the alternation of hot and cold between the seamless steel pipe and the inner liner, thereby ensuring the structural stability of the seamless steel pipe, so that the composite pipe can be used for a long time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the outer tube assembly of this utility model; Figure 4 This is a schematic diagram of the docking component of this utility model; Figure 5 This is a schematic diagram of the inner lining component of this utility model.

[0017] In the diagram: 100, outer pipe assembly; 101, seamless steel pipe; 102, welding hole one; 103, anti-rust layer one; 104, anti-corrosion layer one; 105, outer paint; 106, anti-rust layer two; 107, moisture-proof layer one; 108, wear-resistant layer; 200, butt joint assembly; 201, flange; 202, chamfer; 203, butt joint hole; 204, sealing gasket one; 300, inner pipe assembly; 301, inner lining pipe; 302, groove; 303, flange; 304, welding hole two; 305, sealing gasket two; 400, inner lining assembly; 401, anti-rust layer three; 402, moisture-proof layer two; 403, antibacterial layer; 404, anti-corrosion layer two; 405, smooth layer. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5 As shown, an inner-lined composite pipe includes an outer pipe assembly 100, a docking assembly 200 fixed to one side of the outer pipe assembly 100, an inner pipe assembly 300 fixed inside the outer pipe assembly 100, and an inner lining assembly 400 disposed inside the inner pipe assembly 300. The inner pipe assembly 300 includes an inner lining tube 301, which is fixed inside the outer pipe assembly 100. A groove 302 is provided on one side of the inner lining tube 301. The groove 302 causes the outer side of the inner lining tube 301 to bulge slightly, thereby fitting into a groove opened on the inner wall of the seamless steel pipe 101. A flange 303 is provided at the end of the inner lining tube 301. The flange 303 is integral with the inner lining tube 301 and is not welded together. A welding hole 304 is opened on one side of the flange 303, and a sealing gasket 305 is fixed on one side of the flange 303. The sealing gasket 305 can fill the gap between the inner lining tubes 301 and prevent fluid from flowing out.

[0020] As a technical optimization of this utility model, the outer tube assembly 100 includes a seamless steel pipe 101. A welding hole 102 is provided on one side of the seamless steel pipe 101, through which the seamless steel pipe 101 can be welded to the inner liner pipe 301. A rust-proof layer 103 is fixed to one side of the seamless steel pipe 101, preventing rust from forming on the outer layer of the seamless steel pipe 101. An anti-corrosion layer 104 is fixed to one side of the rust-proof layer 103, and an outer paint 105 is fixed to one side of the anti-corrosion layer 104. 5. It serves to isolate moisture and oxygen, thereby delaying the rusting of the seamless steel pipe 101. A second rust-proof layer 106 is fixed inside the seamless steel pipe 101. A first moisture-proof layer 107 is fixed on one side of the second rust-proof layer 106. The first moisture-proof layer 107 can prevent moisture from spreading to the side of the second rust-proof layer 106. A wear-resistant layer 108 is fixed on one side of the first moisture-proof layer 107. The wear-resistant layer 108 can prevent the inner lining pipe 301 from scratching the various coatings on the inner wall of the seamless steel pipe 101 during the process of inserting into the seamless steel pipe 101.

[0021] As a technical optimization of this utility model, the docking assembly 200 includes a flange 201, which is fixed to one side of the seamless steel pipe 101. A chamfer 202 is provided on one side of the flange 201, and a docking hole 203 is provided on one side of the flange 201. The flanges 201 can be connected and fixed together by bolts through the docking hole 203. A sealing gasket 204 is fixed on one side of the flange 201, which fills the gap between the flange 303 and the flange 201.

[0022] As a technical optimization of this utility model, the inner lining component 400 includes a third rust-proof layer 401, which is fixed inside the inner lining tube 301. A second moisture-proof layer 402 is fixed to one side of the third rust-proof layer 401, and an antibacterial layer 403 is fixed to one side of the second moisture-proof layer 402. The antibacterial layer 403 can prevent bacteria carried in the fluid from existing in the inner lining tube 301 for a long time. A second anti-corrosion layer 404 is fixed to one side of the antibacterial layer 403, and a smoothing layer 405 is fixed to one side of the second anti-corrosion layer 404. The smoothing layer 405 can effectively prevent impurities mixed in the fluid from adhering to the inside of the inner lining tube 301.

[0023] In use, this utility model first cuts a groove on the inner wall of the seamless steel pipe 101 that corresponds to the groove 302 on the inner lining pipe 301. Then, the inner lining pipe 301 is inserted into the seamless steel pipe 101. The inner lining pipe 301 and the seamless steel pipe 101 are then welded together through the first welding hole 102. Subsequently, the end of the inner lining pipe 301 is rolled outward by the equipment to form a flange 303. Then, a second welding hole 304 is opened on the flange 303, and the flange 303 is welded together with the flange 201 through the second welding hole 304 to prevent the flange 303 from warping. The inner lining composite pipe can then be connected through the flange 201, and fluid can then be transported.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] 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 lined composite pipe comprising an outer pipe assembly (100) characterised in that: The outer tube assembly (100) is fixed with a docking assembly (200) on one side. The outer tube assembly (100) is fixed with an inner tube assembly (300) inside. The inner tube assembly (300) is provided with an inner liner assembly (400) inside. The inner tube assembly (300) includes an inner liner tube (301). The inner liner tube (301) is fixed inside the outer tube assembly (100). The inner liner tube (301) is provided with a groove (302) on one side. The inner liner tube (301) is provided with a flange (303) at one end. The flange (303) is provided with a welding hole (304) on one side. The flange (303) is fixed with a sealing gasket (305) on one side.

2. The inner-lined composite pipe according to claim 1, characterized in that: The outer tube assembly (100) includes a seamless steel pipe (101), a welding hole (102) is provided on one side of the seamless steel pipe (101), and a rust-proof layer (103) is fixed on one side of the seamless steel pipe (101).

3. The inner lining composite pipe according to claim 2, characterized in that: The first anti-rust layer (103) is fixed with the first anti-corrosion layer (104) on one side, the first anti-corrosion layer (104) is fixed with the outer paint (105) on one side, and the second anti-rust layer (106) is fixed inside the seamless steel pipe (101).

4. The inner lining composite pipe according to claim 3, characterized in that: A moisture-proof layer (107) is fixed on one side of the second rust-proof layer (106), and a wear-resistant layer (108) is fixed on one side of the first moisture-proof layer (107).

5. A composite pipe with an inner lining according to claim 2, characterized in that: The docking assembly (200) includes a flange (201) fixed to one side of the seamless steel pipe (101), and a chamfer (202) is provided on one side of the flange (201).

6. A composite pipe with an inner lining according to claim 5, characterized in that: A mating hole (203) is provided on one side of the flange (201), and a sealing gasket (204) is fixed on one side of the flange (201).

7. The inner-lined composite pipe according to claim 1, characterized in that: The inner lining assembly (400) includes a third rust-proof layer (401), which is fixed inside the inner lining tube (301). A second moisture-proof layer (402) is fixed on one side of the third rust-proof layer (401), and an antibacterial layer (403) is fixed on one side of the second moisture-proof layer (402).

8. A liner-coated composite pipe according to claim 7, characterized in that: The antibacterial layer (403) has a second anti-corrosion layer (404) fixed on one side, and a smoothing layer (405) is fixed on one side of the second anti-corrosion layer (404).

Images