Anti-bending stainless steel pipe

Abstract

The utility model belongs to the technical field of stainless steel pipes, and particularly relates to a bending-resistant stainless steel pipe which comprises an inner lining pipe, reinforcing ribs are welded on the outer wall of the inner lining pipe, an outer lining pipe is welded on the outer sides of the reinforcing ribs, the inner lining pipe comprises an outer layer, a heat insulation layer is arranged on the inner surface of the outer layer, and a corrosion-resistant layer is arranged on the inner side of the heat insulation layer. According to the utility model, the whole body is composed of the inner lining layer, the reinforcing ribs and the outer lining pipe, the reinforcing ribs are arranged in the middle and are twisted, so that the bending strength of the whole body can be increased, and the hollow design can play a good role in heat insulation and sound insulation to a certain extent.

Description

Technical Field

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

[0002] Stainless steel is an alloy material, usually composed of iron, carbon and other elements (such as nickel, chromium, manganese, etc.). Stainless steel has the advantages of corrosion resistance, high temperature resistance, high strength, and easy cleaning. Stainless steel pipe is a hollow long round steel, which is widely used in industrial pipelines such as petroleum, chemical, medical, food, light industry, mechanical instruments, and mechanical structural components. For example, the utility model patent with announcement number CN202884458U discloses a stainless steel pipe, which has a hollow tube body made of stainless steel; the outer wall surface of the tube body is coated with a zirconium nitride layer; the inner wall of the tube body is attached with a plastic lining layer; the thickness of the zirconium nitride layer is 0.3-0.5mm; the thickness of the lining layer is less than 2mm; the stainless steel pipe has a simple structure and has good anti-wear and anti-corrosion properties;

[0003] However, existing stainless steel pipes, especially seamless steel pipes, have limited bending resistance and poor thermal insulation performance. Therefore, improvements are needed. Utility Model Content

[0004] The utility model aims to provide a bending-resistant stainless steel pipe, which solves the problems of limited bending resistance and poor heat insulation performance of existing stainless steel pipes, especially seamless steel pipes.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bending-resistant stainless steel pipe, comprising an inner lining pipe, the outer wall of the inner lining pipe is welded with reinforcing ribs, the outer side of the reinforcing ribs is welded with an outer lining pipe, the inner lining pipe comprises an outer layer, the inner surface of the outer layer is provided with a heat insulation layer, and the inner side of the heat insulation layer is provided with a corrosion-resistant layer.

[0006] Preferably, the reinforcing ribs and the outer liner are both made of stainless steel, the number of the reinforcing ribs is multiple, and the multiple reinforcing ribs are distributed in a circular array. The overall strength can be increased by setting the reinforcing ribs.

[0007] Preferably, the reinforcing rib is twisted and is an integral structure with the inner liner pipe. By designing the reinforcing rib to be twisted, the overall anti-bending ability can be further increased.

[0008] Preferably, the outer layer is made of stainless steel and has a thickness of 1.5 mm. Through the arrangement of the outer layer, it is used as the main body.

[0009] Preferably, the material of the heat insulation layer is composite ceramic nano-tungsten oxide heat insulation material, and the thickness is 0.5 mm. The heat insulation layer can play a certain role in heat insulation.

[0010] Preferably, the material of the corrosion-resistant layer is Teflon, and the thickness is 0.3 mm. Through the setting of the corrosion-resistant layer, it is used as the innermost layer of the whole and has good corrosion resistance.

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

[0012] 1. The utility model is composed of three structures: an inner lining layer, a reinforcing rib and an outer lining tube. The middle part is a reinforcing rib, and the reinforcing rib is twisted. This can increase the overall bending strength. The hollow design can also play a good role in heat insulation and sound insulation to a certain extent.

[0013] 2. The utility model arranges the inner lining pipe to consist of three layers: an outer layer, a heat insulation layer and a corrosion resistant layer, wherein the heat insulation layer and the corrosion resistant layer are arranged on the inner side of the outer layer in sequence, which can improve the overall heat insulation and corrosion resistance to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0015] Figure 2 For the utility model Figure 1 A three-dimensional diagram of the inner liner structure;

[0016] Figure 3 For the utility model Figure 1 A front view of

[0017] Figure 4 For the utility model Figure 3 Schematic diagram of the liner pipe structure.

[0018] In the figure: 1. inner lining pipe; 2. reinforcing ribs; 3. outer lining pipe; 11. outer layer; 12. thermal insulation layer; 13. corrosion-resistant layer. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-4A bending-resistant stainless steel pipe comprises an inner liner pipe 1, the outer wall of the inner liner pipe 1 is welded with a reinforcing rib 2, the outer side of the reinforcing rib 2 is welded with an outer liner pipe 3, the inner liner pipe 1 comprises an outer layer 11, the inner surface of the outer layer 11 is provided with a heat insulating layer 12, and the inner side of the heat insulating layer 12 is provided with a corrosion-resistant layer 13.

[0021] See also Figure 1-3 The reinforcing ribs 2 and the outer liner 3 are made of stainless steel. The number of reinforcing ribs 2 is multiple, and the multiple reinforcing ribs 2 are distributed in a circular array. By setting the reinforcing ribs 2, the overall strength can be increased. The reinforcing ribs 2 are twisted and are an integrated structure with the inner liner 1. By designing the reinforcing ribs 2 to be twisted, the overall bending resistance can be further increased.

[0022] See also Figure 4 The material of the outer layer 11 is stainless steel, and the thickness is 1.5mm. Through the setting of the outer layer 11, it is used as the main body. The material of the heat insulation layer 12 is composite ceramic nano tungsten oxide heat insulation material, and the thickness is 0.5mm. Through the setting of the heat insulation layer 12, a certain heat insulation and heat preservation effect can be achieved. The material of the corrosion-resistant layer 13 is Teflon, and the thickness is 0.3mm. Through the setting of the corrosion-resistant layer 13, it is used as the innermost layer of the whole, and has a good corrosion resistance.

[0023] The specific implementation process of the utility model is as follows: first, a heat insulating layer 12 made of composite ceramic nano-tungsten oxide heat insulating material is coated on the inner surface of the outer layer 11, and then a corrosion-resistant layer 13 made of Teflon material is coated on the inner surface of the heat insulating layer 12, and thus an inner liner tube 1 is formed, and then a circle of reinforcing ribs 2 are welded on the outer wall of the inner liner tube 1, and finally an outer liner tube 3 is welded on the outer side of the reinforcing ribs 2, so that the whole has a three-layer hollow structure, which can play a good role in heat insulation and sound insulation to a certain extent, and the reinforcing ribs 2 are twisted, which can increase the overall bending strength.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bending-resistant stainless steel pipe, comprising an inner liner pipe (1), characterized in that: The outer wall of the inner liner pipe (1) is welded with a reinforcing rib (2), the outer side of the reinforcing rib (2) is welded with an outer liner pipe (3), the inner liner pipe (1) comprises an outer layer (11), the inner surface of the outer layer (11) is provided with a heat insulating layer (12), and the inner side of the heat insulating layer (12) is provided with a corrosion resistant layer (13).

2. The bend-resistant stainless steel pipe according to claim 1, characterized in that: The reinforcing ribs (2) and the outer lining tube (3) are both made of stainless steel. There are a plurality of reinforcing ribs (2), and the plurality of reinforcing ribs (2) are distributed in a ring array.

3. The bend-resistant stainless steel pipe according to claim 1, characterized in that: The reinforcing rib (2) is twisted and is an integral structure with the inner lining pipe (1).

4. The bend-resistant stainless steel pipe according to claim 1, characterized in that: The outer layer (11) is made of stainless steel and has a thickness of 1.5 mm.

5. The bend-resistant stainless steel pipe according to claim 1, characterized in that: The thermal insulation layer (12) is made of composite ceramic nano-tungsten oxide thermal insulation material and has a thickness of 0.5 mm.

6. The bend-resistant stainless steel pipe according to claim 1, characterized in that: The corrosion-resistant layer (13) is made of Teflon and has a thickness of 0.3 mm.

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