Corrosion-resistant stainless steel composite pipe

Abstract

The utility model relates to the technical field of stainless steel composite pipes, and discloses a corrosion-resistant stainless steel composite pipe which comprises a first pipeline, a second pipeline and a flange seat, and mounting plates are mounted at the two ends of the first pipeline and the two ends of the second pipeline; the inner middle materials of the first pipeline and the second pipeline are a first stainless steel layer and a second stainless steel layer, and a heat preservation layer is arranged between the first stainless steel layer and the second stainless steel layer and is made of polyurethane foam plastic; the anti-scratch layer is made of plastic sheets and protects the surfaces of the first pipeline and the second pipeline from external physical damage, the reinforcing layer is made of carbon steel, the anti-pressure ability of the first pipeline and the second pipeline is improved, surface pit deformation caused by impact is avoided, use is not affected, and the heat preservation layer is made of polyurethane foam plastic and has the advantages of being good in heat insulation performance, light in weight and the like. And the corrosion-resistant layer is made of titanium alloy, so that the corrosion resistance of the inner walls of the first pipeline and the second pipeline can be improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel composite pipes, in particular to a corrosion-resistant stainless steel composite pipe. Background Art

[0002] In many industrial applications, piping systems are often exposed to various corrosive media, such as chemicals, salt water, and moisture. Although traditional stainless steel pipes have certain corrosion resistance, their corrosion resistance still cannot meet the requirements in some extreme environments. In addition, the composite pipe surface is not provided with a protective layer, and the strength is insufficient. It is easy to cause surface pits and deformation when impacted by external forces, thus affecting the use and reducing the service life. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a corrosion-resistant stainless steel composite pipe having the advantages of high corrosion resistance and the like, and solves the problems raised by the background technology.

[0004] In order to achieve the above-mentioned purpose of high corrosion resistance, the utility model provides the following technical solutions: a corrosion-resistant stainless steel composite pipe, comprising a first pipe, a second pipe and a flange seat, wherein both ends of the first pipe and the second pipe are equipped with mounting plates;

[0005] The inner middle material of the first pipe and the second pipe is a first stainless steel layer and a second stainless steel layer, an insulation layer is arranged between the first stainless steel layer and the second stainless steel layer, the insulation layer is polyurethane foam plastic, and the inner layer of the second stainless steel layer is provided with a corrosion-resistant layer, and the corrosion-resistant layer is made of titanium alloy.

[0006] As a further solution of the utility model: a plurality of first bolt holes are arranged on the mounting plate, a plurality of second bolt holes are arranged at both ends of the flange seat, locking bolts are arranged in the second bolt holes, and the locking bolts are screwed into the second bolt holes to fix the first pipe and the second pipe, thereby improving the tightness between them.

[0007] As a further solution of the utility model: a sealing ring is arranged between the mounting plate and the flange seat, and the sealing ring is made of rubber material. The sealing ring seals the connection between the mounting plate and the flange seat, thereby improving the tightness and avoiding leakage.

[0008] As a further solution of the utility model: the outer layer of the first stainless steel layer is provided with a reinforcement layer, and the reinforcement layer is made of carbon steel, which improves the pressure resistance of the first pipeline and the second pipeline.

[0009] As a further solution of the utility model: the outer layer of the reinforcement layer is provided with a protective layer, and the protective layer is made of a plastic sheet to protect the surfaces of the first pipe and the second pipe from external physical damage.

[0010] As a further solution of the utility model: the inner layer of the second stainless steel layer is provided with a corrosion-resistant layer, and the corrosion-resistant layer is made of titanium alloy, which can improve the corrosion resistance of the inner walls of the first pipeline and the second pipeline, thereby increasing the service life.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, the anti-scratch layer is made of a plastic sheet, which protects the surfaces of the first pipe and the second pipe from external physical damage. The reinforcement layer is made of carbon steel, which improves the compressive resistance of the first pipe and the second pipe, avoids surface pit deformation caused by impact, and does not affect the use. The thermal insulation layer is polyurethane foam plastic, which has the advantages of good thermal insulation and light weight. The corrosion-resistant layer is made of titanium alloy, which can improve the corrosion resistance of the inner walls of the first pipe and the second pipe, thereby increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the appearance of the utility model;

[0014] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the material structure of the first pipeline and the second pipeline in the utility model.

[0016] In the figure: 1. first pipeline; 2. first pipeline; 3. flange seat; 4. locking bolt; 5. mounting plate; 6. first bolt hole; 7. sealing ring; 8. corrosion-resistant layer; 9. second bolt hole; 10. protective layer; 11. reinforcement layer; 12. first stainless steel layer; 13. insulation layer; 14. second stainless steel layer. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] It should be noted that titanium alloy is an existing technology and is common knowledge to those skilled in the art, and will not be elaborated on here.

[0019] See also Figures 1 to 3In the embodiment of the utility model, a corrosion-resistant stainless steel composite pipe comprises a first pipe 1, a second pipe 2 and a flange seat 3, and mounting plates 5 are installed at both ends of the first pipe 1 and the second pipe 2;

[0020] The inner middle material of the first pipeline 1 and the second pipeline 2 is a first stainless steel layer 12 and a second stainless steel layer 14, an insulation layer 13 is arranged between the first stainless steel layer 12 and the second stainless steel layer 14, and the insulation layer 13 is polyurethane foam plastic. The inner layer of the second stainless steel layer 14 is provided with a corrosion-resistant layer 8, and the corrosion-resistant layer 8 is made of titanium alloy.

[0021] The mounting plate 5 is provided with a plurality of first bolt holes 6, and the two ends of the flange seat 3 are provided with a plurality of second bolt holes 9. The second bolt holes 9 are provided with locking bolts 4, which are screwed into the second bolt holes 9 to fix the first pipeline 1 and the second pipeline 2, thereby improving the tightness between them; a sealing ring 7 is provided between the mounting plate 5 and the flange seat 3, and the sealing ring 7 is made of rubber material. The sealing ring 7 seals the connection between the mounting plate 5 and the flange seat 3, thereby improving the tightness and avoiding leakage; the outer layer of the first stainless steel layer 12 is provided with a reinforcing layer 11, and the reinforcing layer 11 is made of carbon steel, thereby improving the pressure resistance of the first pipeline 1 and the second pipeline 2; the outer layer of the reinforcing layer 11 is provided with a protective layer 10, and the protective layer 10 is made of a plastic sheet, thereby protecting the surfaces of the first pipeline 1 and the second pipeline 2 from external physical damage; the inner layer of the second stainless steel layer 14 is provided with a corrosion-resistant layer 8, and the corrosion-resistant layer 8 is made of titanium alloy, thereby improving the corrosion resistance of the inner walls of the first pipeline 1 and the second pipeline 2, thereby improving the service life.

[0022] The working principle of the utility model is: two sealing rings 7 are sleeved on the flange seat 3, the first pipeline 1 and the second pipeline 2 are threadedly connected to the flange, the locking bolts 4 are screwed into the second bolt holes 9 to fix the first pipeline 1 and the second pipeline 2, the sealing rings 7 seal the connection between the mounting plate 5 and the flange seat 3, improve the tightness and avoid leakage, the protective layer 10 is made of plastic sheet, and the surface of the first pipeline 1 and the second pipeline 2 is protected from external physical damage, the reinforcement layer 11 is made of carbon steel, and the compressive capacity of the first pipeline 1 and the second pipeline 2 is improved, the thermal insulation layer 13 is polyurethane foam plastic, which has the advantages of good thermal insulation and light weight, the corrosion-resistant layer 8 is made of titanium alloy, which can improve the corrosion resistance of the inner wall of the first pipeline 1 and the second pipeline 2, thereby improving the service life, and the cold rolling process is used to bond different material layers to improve the performance.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A corrosion-resistant stainless steel composite pipe, comprising a first pipe (1), a second pipe (2) and a flange seat (3), wherein both ends of the first pipe (1) and the second pipe (2) are provided with mounting plates (5); Features: The inner middle materials of the first pipe (1) and the second pipe (2) are a first stainless steel layer (12) and a second stainless steel layer (14); a heat-insulating layer (13) is arranged between the first stainless steel layer (12) and the second stainless steel layer (14); the heat-insulating layer (13) is made of polyurethane foam plastic; the inner layer of the second stainless steel layer (14) is provided with a corrosion-resistant layer (8); the corrosion-resistant layer (8) is made of titanium alloy.

2. The corrosion-resistant stainless steel composite pipe according to claim 1, characterized in that: The mounting plate (5) is provided with a plurality of first bolt holes (6), and both ends of the flange seat (3) are provided with a plurality of second bolt holes (9), and locking bolts (4) are provided in the second bolt holes (9).

3. The corrosion-resistant stainless steel composite pipe according to claim 1, characterized in that: A sealing ring (7) is provided between the mounting plate (5) and the flange seat (3), and the sealing ring (7) is made of rubber material.

4. The corrosion-resistant stainless steel composite pipe according to claim 1, characterized in that: The outer layer of the first stainless steel layer (12) is provided with a reinforcement layer (11), and the reinforcement layer (11) is made of carbon steel.

5. The corrosion-resistant stainless steel composite pipe according to claim 4, characterized in that: The outer layer of the reinforcement layer (11) is provided with a protective layer (10), and the protective layer (10) is made of a plastic sheet.

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