Corrosion-resistant flexible composite high-pressure conveying pipe

Abstract

The utility model relates to the technical field of flexible high-pressure delivery pipes, in particular to a corrosion-resistant flexible composite high-pressure delivery pipe which comprises a main pipe body, an outer sheath is sleeved on the outer wall surface of the main pipe body, a puncture-resistant and tear-resistant outer sleeve layer is sleeved on the outer wall surface, far away from the main pipe body, of the outer sheath, and a puncture-resistant and tear-resistant inner sleeve layer is arranged on the inner wall surface of the main pipe body. An inner core pipe is arranged on the inner wall face, away from the main pipe body, of the puncture-resistant and tear-resistant inner sleeve layer, a tough inner sleeve is arranged on the inner wall face, away from the main pipe body, of the inner core pipe, and a corrosion-resistant and aging-resistant coating is arranged on the inner wall face, away from the main pipe body, of the tough inner sleeve. A wear-resistant matte coating is arranged on the outer wall face, away from the main pipe body, of the puncture-resistant and tear-resistant outer sleeve layer, and an inner groove and an outer arc fixing face are arranged on the tough inner sleeve. The corrosion resistance and the aging resistance of the inner wall face of the inner core pipe on the flexible high-pressure conveying pipe are improved, the puncture resistance and the tear resistance of the main pipe body are improved, and light pollution to the environment is avoided.

Description

Technical Field

[0001] This utility model relates to the field of flexible high-pressure transmission pipe technology, and in particular to a corrosion-resistant flexible composite high-pressure transmission pipe. Background Technology

[0002] Flexible high-pressure transmission pipe is a non-metallic composite pipe widely used in petroleum, natural gas, chemical, marine engineering and other fields.

[0003] Flexible high-pressure transmission pipes generally consist of a main pipe body, an outer sheath, and an inner core tube. The outer sheath is placed on the outer wall of the main pipe body, and the inner core tube is placed in the inner wall of the main pipe body.

[0004] Currently, existing flexible high-pressure transmission pipes, when used for long-term transportation of petrochemical raw materials, will cause corrosion and aging of the inner wall surface of the inner core tube, which greatly reduces the corrosion resistance and aging resistance of the inner wall surface of the flexible high-pressure transmission pipe.

[0005] Furthermore, the existing flexible high-pressure conveying pipes have weak puncture and tear resistance in their main body, making them prone to being pierced by sharp objects or being bent and torn during use.

[0006] In addition, the outer sheath of existing flexible high-pressure transmission pipes is generally bright and colorful. When they are transported to the pre-buried location by transport vehicles and exposed to strong sunlight, they will reflect light, which is quite dazzling and can easily cause light pollution to the environment.

[0007] Therefore, we designed a flexible high-pressure transmission pipe to meet the needs of practical applications. Utility Model Content

[0008] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a corrosion-resistant flexible composite high-pressure conveying pipe.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A corrosion-resistant flexible composite high-pressure conveying pipe is designed, comprising a main body, an outer sheath covering the outer wall of the main body, a puncture-resistant and tear-resistant outer sleeve covering the outer wall of the outer sheath away from the main body, a puncture-resistant and tear-resistant inner sleeve covering the inner wall of the main body, an inner core tube covering the inner core tube away from the main body, a tough inner sleeve covering the inner wall of the inner core tube away from the main body, and a corrosion-resistant and aging-resistant coating covering the inner wall of the tough inner sleeve away from the main body.

[0011] The puncture-resistant and tear-resistant outer layer has an abrasion-resistant matte coating on the outer wall surface away from the main body.

[0012] The tough inner sleeve is provided with an inner groove and an outer arc solid surface.

[0013] In detail, the anti-corrosion and anti-aging coating is uniformly applied along the inner wall of the tough inner sleeve. The anti-corrosion and anti-aging coating is a polyether ether ketone (PEEK) coating. PEEK coating has excellent corrosion resistance and aging resistance. It has excellent resistance to the erosion of chemicals such as strong acids, strong alkalis, and organic solvents, and can be used for a long time in high-temperature environments without oxidation and decomposition.

[0014] In detail, both the puncture-resistant and tear-resistant outer layer and the puncture-resistant and tear-resistant inner layer are tubular structures. Both the puncture-resistant and tear-resistant outer layer and the puncture-resistant and tear-resistant inner layer are made of glass fiber. The glass fiber layer material has extremely high strength and puncture resistance. It is a soft material, which effectively prevents external sharp objects from penetrating and avoids bending and tearing.

[0015] In detail, the wear-resistant matte coating is uniformly applied along the outer wall of the puncture-resistant and tear-resistant outer jacket. The wear-resistant matte coating is a PVDF fluorocarbon coating. The PVDF fluorocarbon coating has excellent wear-resistant matte properties, which effectively avoids the glare caused by the reflection of ambient light from the bright outer jacket, while improving the surface wear resistance of the puncture-resistant and tear-resistant outer jacket.

[0016] In detail, the tough inner sleeve is made of TPU polyurethane tubing. TPU polyurethane tubing itself has excellent corrosion resistance and flexibility, as well as excellent high flexibility and impact resistance, ensuring the flexibility of the main tube while ensuring the corrosion resistance of the inner core tube.

[0017] In detail, the inner groove is formed on the inner wall of the flexible inner sleeve. The inner groove is a V-shaped groove with thirteen grooves arranged in a circle, which ensures that the main body has a certain degree of flexible bending effect.

[0018] In detail, the outer arc fixed surface is disposed on the outer wall surface of the tough inner sleeve, and the outer wall surface of the tough inner sleeve is bonded to the inner wall surface of the inner core tube.

[0019] The design scheme proposed in this utility model has the following beneficial effects in application:

[0020] 1. This utility model greatly improves the corrosion resistance and aging resistance of the inner wall of the inner core tube in the flexible high-pressure conveying pipe by setting a tough inner sleeve structure on the inner core tube and then setting an anti-corrosion and aging resistant coating structure on the tough inner sleeve, thus avoiding corrosion and aging of the inner wall of the inner core tube due to long-term use.

[0021] 2. This utility model improves the overall puncture and tear resistance of the main body by setting a puncture-resistant and tear-resistant outer layer and a puncture-resistant and tear-resistant inner layer structure on the main body, effectively preventing external sharp objects from penetrating and tearing during use.

[0022] 3. This utility model, by setting a puncture-resistant and tear-resistant outer layer structure with a wear-resistant matte coating on the main body, avoids reflected light when the outer wall surface is exposed to strong sunlight during the process of being transported to the pre-embedded location by a transport vehicle, effectively avoiding light pollution to the environment. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0024] Figure 2 For the present utility model Figure 1 Enlarged view of a section at point L;

[0025] Figure 3 This is a front view schematic diagram of the overall structure of this utility model;

[0026] Figure 4 For the present utility model Figure 3 MM cross-section;

[0027] Figure 5 For the present utility model Figure 4 A magnified view of a portion of point N in the middle.

[0028] In the figure: 1 Main tube; 2 Outer sheath; 3 Puncture-resistant and tear-resistant outer sheath; 4 Puncture-resistant and tear-resistant inner sheath; 5 Inner core tube; 6 Tough inner sheath; 61 Inner groove; 62 Outer arc solid surface; 7 Corrosion-resistant and aging-resistant coating; 8 Wear-resistant matte coating. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] Reference Figures 1-5 A corrosion-resistant flexible composite high-pressure conveying pipe includes a main body 1, an outer sheath 2 covering the outer wall of the main body 1, a puncture-resistant and tear-resistant outer sleeve 3 covering the outer wall of the outer sheath 2 away from the main body 1, a puncture-resistant and tear-resistant inner sleeve 4 covering the inner wall of the main body 1, an inner core tube 5 covering the inner wall of the puncture-resistant and tear-resistant inner sleeve 4 away from the main body 1, a tough inner sleeve 6 covering the inner wall of the inner core tube 5 away from the main body 1, and a corrosion-resistant and aging-resistant coating 7 covering the inner wall of the tough inner sleeve 6 away from the main body 1.

[0031] A wear-resistant matte coating 8 is provided on the outer wall surface of the puncture-resistant and tear-resistant outer layer 3 away from the main body 1;

[0032] The tough inner sleeve 6 is provided with an inner groove 61 and an outer arc solid surface 62. The main body 1 is a commonly used flexible high-pressure conveying pipe. The outer sheath 2 and the inner core tube 5 are commonly used component structures and are existing technologies.

[0033] It should be further noted that the anti-corrosion and aging-resistant coating 7 is uniformly applied along the inner wall of the tough inner sleeve 6. The anti-corrosion and aging-resistant coating 7 is a polyether ether ketone (PEEK) coating. The PEEK coating has excellent corrosion resistance and aging resistance. It has excellent resistance to the erosion of chemicals such as strong acids, strong alkalis, and organic solvents, and can be used for a long time in high-temperature environments without oxidation and decomposition.

[0034] It should be further noted that both the puncture-resistant and tear-resistant outer layer 3 and the puncture-resistant and tear-resistant inner layer 4 are tubular structures. Both the puncture-resistant and tear-resistant outer layer 3 and the puncture-resistant and tear-resistant inner layer 4 are made of glass fiber. The glass fiber layer material has extremely high strength and puncture resistance. It is a soft material, which effectively prevents external sharp objects from penetrating and avoids bending and tearing.

[0035] It should be further noted that the wear-resistant matte coating 8 is uniformly applied along the outer wall of the puncture-resistant and tear-resistant outer jacket 3. The wear-resistant matte coating 8 is a PVDF fluorocarbon coating. The PVDF fluorocarbon coating has excellent wear-resistant matte properties. While effectively avoiding the glare caused by the reflection of ambient light from the bright outer jacket 2, it also improves the surface wear resistance of the puncture-resistant and tear-resistant outer jacket 3.

[0036] It should be further noted that the tough inner sleeve 6 is a TPU polyurethane tube structure. The TPU polyurethane tube itself has excellent corrosion resistance and flexibility, as well as excellent high flexibility and impact resistance, ensuring the flexibility of the main tube 1 and ensuring the corrosion resistance of the inner core tube 5.

[0037] It should be further explained that the inner groove 61 is formed on the inner wall of the flexible inner sleeve 6. The inner groove 61 is a V-shaped groove with thirteen grooves arranged in a circle, which ensures that the main body 1 has a certain degree of flexible bending effect.

[0038] It should be further noted that the outer arc fixed surface 62 is set on the outer wall surface of the tough inner sleeve 6. The outer wall surface of the tough inner sleeve 6 and the inner wall surface of the inner core tube 5 are firmly bonded together by epoxy resin adhesive. The epoxy resin adhesive is corrosion resistant, oxidation resistant and durable, which improves the bonding strength and corrosion resistance between the tough inner sleeve 6 and the inner core tube 5.

[0039] Working method: By setting a tough inner sleeve 6 structure on the inner core tube 5, and then setting an anti-corrosion and anti-aging coating 7 structure on the tough inner sleeve 6, the corrosion resistance and anti-aging of the inner wall surface of the inner core tube 5 on the flexible high pressure conveying pipe are greatly improved, avoiding corrosion and aging of the inner wall surface of the inner core tube 5 due to long-term use.

[0040] Furthermore, by setting a puncture-resistant and tear-resistant outer layer 3 and a puncture-resistant and tear-resistant inner layer 4 on the main body 1, the overall puncture and tear resistance of the main body 1 is improved, effectively preventing external sharp objects from penetrating and bending and tearing during use.

[0041] In addition, by setting a puncture-resistant and tear-resistant outer jacket layer 3 with a wear-resistant matte coating 8 on the main body 1, when the outer wall surface is exposed to strong sunlight during the process of being transported to the pre-embedded location by a transport vehicle, reflected light is avoided, effectively preventing light pollution to the environment.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A corrosion resistant flexible composite high pressure conveying pipe comprising a main pipe body (1) characterised in that: The outer wall surface of the main pipe body (1) is sleeved with an outer sheath (2), the outer sheath (2) is sleeved with a puncture-resistant and tear-resistant outer sheath layer (3) away from the outer wall surface of the main pipe body (1), the inner wall surface of the main pipe body (1) is provided with a puncture-resistant and tear-resistant inner sheath layer (4), the puncture-resistant and tear-resistant inner sheath layer (4) is provided with an inner core pipe (5) away from the inner wall surface of the main pipe body (1), the inner core pipe (5) is provided with a flexible inner sleeve (6) away from the inner wall surface of the main pipe body (1), and the flexible inner sleeve (6) is provided with a corrosion-resistant and aging-resistant coating (7) away from the inner wall surface of the main pipe body (1). The puncture-resistant and tear-resistant outer sheath layer (3) is provided with a wear-resistant matte coating (8) away from the outer wall surface of the main pipe body (1). The flexible inner sleeve (6) is provided with an inner groove (61) and an outer arc solid surface (62).

2. A corrosion resistant flexible composite high pressure pipe according to claim 1, characterized in that: The corrosion-resistant and aging-resistant coating (7) is uniformly coated along the inner wall surface of the flexible inner sleeve (6), and the corrosion-resistant and aging-resistant coating (7) is a polyether ether ketone PEEK coating.

3. A corrosion resistant flexible composite high pressure pipe according to claim 1, characterized in that: The puncture-resistant and tear-resistant outer sheath layer (3) and the puncture-resistant and tear-resistant inner sheath layer (4) are both pipe body structures, and the puncture-resistant and tear-resistant outer sheath layer (3) and the puncture-resistant and tear-resistant inner sheath layer (4) are both glass fiber structures.

4. A corrosion resistant flexible composite high pressure pipe according to claim 1, characterized in that: The wear-resistant matte coating (8) is uniformly coated along the outer wall surface of the puncture-resistant and tear-resistant outer sheath layer (3), and the wear-resistant matte coating (8) is a PVDF fluorocarbon coating.

5. A corrosion resistant flexible composite high pressure pipe according to claim 1, characterized in that: The flexible inner sleeve (6) is a TPU polyurethane pipe body structure.

6. A corrosion resistant flexible composite high pressure pipe according to claim 1, characterized in that: The inner groove (61) is formed on the inner wall surface of the flexible inner sleeve (6), and the inner groove (61) is a V-shaped inner groove and is arranged in a circular manner.

7. A corrosion resistant flexible composite high pressure pipe according to claim 1, characterized in that: The outer arc solid surface (62) is arranged on the outer wall surface of the flexible inner sleeve (6), and the outer wall surface of the flexible inner sleeve (6) and the inner wall surface of the inner core pipe (5) are fixedly arranged.

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