Compression-resistant and corrosion-resistant seamless steel tube

Abstract

The utility model relates to the field of seamless steel tubes, and discloses a compression-resistant and corrosion-resistant seamless steel tube which comprises an inner tube, a first compression-resistant layer is connected to the outer side of the inner tube, a plurality of groups of first reinforcing ribs are arranged in the first compression-resistant layer and connected with the inner tube, a second compression-resistant layer is connected to the inner side of the first compression-resistant layer, and a plurality of groups of second reinforcing ribs are arranged in the second compression-resistant layer. A plurality of sets of second reinforcing ribs are connected to the outer side of the second compression-resistant layer and connected with the inner pipe, a first corrosion-resistant layer is arranged on the outer side of the first compression-resistant layer, a second corrosion-resistant layer is connected to the inner side of the second compression-resistant layer, and the compression resistance of the inner pipe can be improved through the first compression-resistant layer and the second compression-resistant layer; the overall strength of the inner pipe is high, the use requirements in different environments can be met, the service life of the inner pipe is prolonged, the first reinforcing ribs and the second reinforcing ribs can improve the connecting effect among the first compression-resistant layer, the inner pipe and the second compression-resistant layer, and meanwhile the compressive strength is improved.

Description

Technical Field

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

[0002] Seamless steel pipe is made of a whole round steel with holes. There is no weld on the surface of the steel pipe, which is called seamless steel pipe. According to the production method, seamless steel pipe can be divided into hot-rolled seamless steel pipe, cold-rolled seamless steel pipe, cold-drawn seamless steel pipe, extruded seamless steel pipe, jacking pipe, etc. According to the cross-sectional shape, seamless steel pipe is divided into round and special-shaped. Special-shaped pipes have square, oval, triangle, hexagon, melon seed, star, winged pipe and many other complex shapes.

[0003] After searching, the Chinese patent announcement number is: CN217056652U Disclosed is a multi-layer composite corrosion-resistant seamless steel pipe, comprising an inner pipe, the outer surface of the inner pipe is fixedly connected with a second connecting layer, the outer surface of the second connecting layer is fixedly connected with a second corrosion-resistant layer, the outer surface of the second corrosion-resistant layer is fixedly connected with an isolation layer, and the outer surface of the isolation layer is fixedly connected with a third corrosion-resistant layer. The multi-layer composite corrosion-resistant seamless steel pipe isolates water penetration on the outer side of the pipe through the third wear-resistant layer, reduces the contact between the inner side of the pipe and water, thereby reducing metal corrosion, and then a second corrosion-resistant layer is arranged between the inner pipe and the third corrosion layer, and the second corrosion-resistant layer neutralizes the water infiltrated into the inner side, further improving the corrosion resistance of the pipe, and facilitating the use of the pipe in a long-term humid environment, thereby solving the problem that the surface of the existing seamless steel pipe is easily corroded by the wet ground after laying, which will affect its service life and engineering quality in the long term.

[0004] In the above technical solution, although the steel pipe is used in a long-term humid environment, the compression resistance of the steel pipe is poor. After laying, objects such as soil accumulated on the surface of the steel pipe are likely to cause wear and tear on the steel pipe, and it is easy to bend, which is not conducive to the long-term use of the steel pipe. Therefore, a compression-resistant and corrosion-resistant seamless steel pipe is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a pressure-resistant and corrosion-resistant seamless steel pipe, which aims to improve the problem that the steel pipe in the prior art has poor pressure resistance. After laying is completed, objects such as soil accumulated on the surface of the steel pipe can easily cause wear and tear on the steel pipe, which is prone to bending, and is not conducive to the long-term use of the steel pipe.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A pressure-resistant and corrosion-resistant seamless steel pipe comprises an inner pipe, wherein the outer side of the inner pipe is connected to a first pressure-resistant layer, a plurality of groups of first reinforcing ribs are arranged inside the first pressure-resistant layer, and the plurality of groups of first reinforcing ribs are connected to the inner pipe, a second pressure-resistant layer is connected to the inner side of the first pressure-resistant layer, a plurality of groups of second reinforcing ribs are connected to the outer side of the second pressure-resistant layer, and the plurality of groups of second reinforcing ribs are connected to the inner pipe.

[0008] As a further description of the above technical solution:

[0009] A first corrosion-resistant layer is disposed on the outer side of the first pressure-resistant layer, and a second corrosion-resistant layer is connected to the inner side of the second pressure-resistant layer;

[0010] As a further description of the above technical solution:

[0011] The first corrosion-resistant layer is coated on the outside of the first pressure-resistant layer, and the second corrosion-resistant layer is coated on the inside of the second pressure-resistant layer. The first corrosion-resistant layer and the second corrosion-resistant layer are made of epoxy resin composite materials.

[0012] As a further description of the above technical solution:

[0013] Said outer side of the first corrosion-resistant layer and the inner side of the second corrosion-resistant layer are coated with a waterproof layer, and said waterproof layer is made of acrylic acid;

[0014] As a further description of the above technical solution:

[0015] The inner side of the first connecting groove is provided with a plurality of groups of first connecting grooves matching with the second reinforcing ribs, and the plurality of groups of the second reinforcing ribs are connected inside the plurality of groups of the first connecting grooves;

[0016] As a further description of the above technical solution:

[0017] The outer side of the inner tube is provided with a plurality of groups of second connection grooves matching the first reinforcement ribs, and the plurality of groups of the first reinforcement ribs are connected inside the plurality of groups of the second connection grooves;

[0018] As a further description of the above technical solution:

[0019] The first pressure-resistant layer and the second pressure-resistant layer are made of composite titanium alloy nanolayers;

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the first pressure-resistant layer and the second pressure-resistant layer can improve the pressure resistance of the inner pipe, and can also prevent the inner pipe from being damaged by objects such as soil during laying, so that the overall strength of the inner pipe is relatively high, which can meet the use requirements in different environments and increase the service life of the inner pipe.

[0022] 2. In the utility model, the first reinforcing rib and the second reinforcing rib can improve the connection effect between the first pressure-resistant layer, the inner tube and the second pressure-resistant layer, and at the same time improve the compressive strength. The first corrosion-resistant layer, the second corrosion-resistant layer and the waterproof layer can isolate water and oxygen from contacting the first pressure-resistant layer and the second pressure-resistant layer, thereby enhancing the protective effect and extending the service life of the inner tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional schematic diagram of a pressure-resistant and corrosion-resistant seamless steel pipe proposed by the utility model;

[0024] Figure 2 This is a schematic diagram of the inner tube of a pressure-resistant and corrosion-resistant seamless steel tube proposed by the utility model;

[0025] Figure 3 A schematic diagram of the structure of the first and second pressure-resistant layers of a pressure-resistant and corrosion-resistant seamless steel pipe proposed by the utility model;

[0026] Figure 4 The utility model is a schematic diagram of the inner tube structure of a pressure-resistant and corrosion-resistant seamless steel tube.

[0027] Legend:

[0028] 1. First corrosion-resistant layer; 2. First pressure-resistant layer; 201. First reinforcing rib; 3. Inner tube; 301. First connecting groove; 302. Second connecting groove; 4. Second pressure-resistant layer; 401. Second reinforcing rib; 5. Second corrosion-resistant layer. DETAILED DESCRIPTION

[0029] 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.

[0030] Reference Figure 1-3The utility model provides an embodiment: a pressure-resistant and corrosion-resistant seamless steel pipe, including an inner pipe 3, the outer side of the inner pipe 3 is connected with a first pressure-resistant layer 2, the interior of the first pressure-resistant layer 2 is provided with a plurality of first reinforcing ribs 201, the plurality of first reinforcing ribs 201 are connected to the inner pipe 3, the inner side of the first pressure-resistant layer 2 is connected with a second pressure-resistant layer 4, the first pressure-resistant layer 2 and the second pressure-resistant layer 4 are made of a composite titanium alloy nanolayer, the first pressure-resistant layer 2 and the second pressure-resistant layer 4 of the composite titanium alloy nanolayer can improve the strength effect of the inner pipe 3, prevent the inner pipe 3 from being damaged by objects such as soil during laying, make the overall strength of the inner pipe 3 higher, and at the same time have good corrosion resistance, improve the service life of the inner pipe 3, and can meet the use requirements in different environments; the outer side of the second pressure-resistant layer 4 is connected with a plurality of second Reinforcing ribs 401, multiple groups of second reinforcing ribs 401 are connected to the inner tube 3, multiple groups of first connecting grooves 301 matching the second reinforcing ribs 401 are opened on the inner side of the first connecting grooves 301, multiple groups of second reinforcing ribs 401 are connected to the inside of the multiple groups of first connecting grooves 301, multiple groups of second connecting grooves 302 matching the first reinforcing ribs 201 are opened on the outer side of the inner tube 3, multiple groups of first reinforcing ribs 201 are connected to the inside of the multiple groups of second connecting grooves 302, and the compressive strength can be enhanced by multiple groups of first reinforcing ribs 201 and second reinforcing ribs 401, thereby improving the overall strength of the inner tube 3, and the first connecting grooves 301 and second connecting grooves 302 and the first reinforcing ribs 201 and second reinforcing ribs 401 can improve the connection effect between the first pressure-resistant layer 2, the inner tube 3 and the second pressure-resistant layer 4.

[0031] Reference Figure 1-2 A first corrosion-resistant layer 1 is arranged on the outer side of the first pressure-resistant layer 2, and a second corrosion-resistant layer 5 is connected to the inner side of the second pressure-resistant layer 4. The first corrosion-resistant layer 1 and the second corrosion-resistant layer 5 are coated on the outer side of the first pressure-resistant layer 2, and the second corrosion-resistant layer 5 is coated on the inner side of the second pressure-resistant layer 4. The first corrosion-resistant layer 1 and the second corrosion-resistant layer 5 are made of epoxy resin composite materials. The first corrosion-resistant layer 1 and the second corrosion-resistant layer 5 can effectively isolate oxygen from contacting the first pressure-resistant layer 2 and the second pressure-resistant layer 4, thereby improving the service life of the first pressure-resistant layer 2 and the second pressure-resistant layer 4. A waterproof layer is coated on the outer side of the first corrosion-resistant layer 1 and the inner side of the second corrosion-resistant layer 5. The waterproof layer is made of acrylic acid. The waterproof coating is coated on the outer side of the first corrosion-resistant layer 1 and the inner side of the second corrosion-resistant layer 5. The waterproof layer can isolate water from contacting the first pressure-resistant layer 2 and the second pressure-resistant layer 4, thereby facilitating the use of the inner tube 3 in a humid environment and improving the protective effect.

[0032] Working principle: The first pressure-resistant layer 2 and the second pressure-resistant layer 4 of the composite titanium alloy nanolayer can improve the strength of the inner tube 3, prevent soil blocks and other objects from causing damage to the inner tube 3 during laying, and make the overall strength of the inner tube 3 higher while having excellent corrosion resistance. The multiple groups of first reinforcing ribs 201 and second reinforcing ribs 401 can improve the compressive strength and enhance the overall strength of the steel pipe. The first connecting groove 301 and the second connecting groove 302 can make the first pressure-resistant layer 2 and the second pressure-resistant layer 4 firmly connected to the inner and outer sides of the inner tube 3, thereby improving the connection effect. The first corrosion-resistant layer 1 and the second corrosion-resistant layer 5 of the epoxy resin composite material can effectively isolate oxygen from contacting the first pressure-resistant layer 2 and the second pressure-resistant layer 4, thereby improving the service life of the first pressure-resistant layer 2 and the second pressure-resistant layer 4, and the waterproof layer made of acrylic acid can prevent water from contacting the first pressure-resistant layer 2 and the second pressure-resistant layer 4, thereby meeting the usage requirements in different environments.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure-resistant and corrosion-resistant seamless steel pipe, comprising an inner pipe (3), characterized in that: The outer side of the inner tube (3) is connected to a first pressure-resistant layer (2), a plurality of groups of first reinforcing ribs (201) are arranged inside the first pressure-resistant layer (2), and the plurality of groups of first reinforcing ribs (201) are connected to the inner tube (3); the inner side of the first pressure-resistant layer (2) is connected to a second pressure-resistant layer (4), the outer side of the second pressure-resistant layer (4) is connected to a plurality of groups of second reinforcing ribs (401), and the plurality of groups of second reinforcing ribs (401) are connected to the inner tube (3).

2. A pressure-resistant and corrosion-resistant seamless steel pipe according to claim 1, characterized in that: A first corrosion-resistant layer (1) is arranged on the outer side of the first pressure-resistant layer (2), and a second corrosion-resistant layer (5) is connected to the inner side of the second pressure-resistant layer (4).

3. A pressure-resistant and corrosion-resistant seamless steel pipe according to claim 2, characterized in that: The first corrosion-resistant layer (1) is applied on the outer side of the first pressure-resistant layer (2), and the second corrosion-resistant layer (5) is applied on the inner side of the second pressure-resistant layer (4). The first corrosion-resistant layer (1) and the second corrosion-resistant layer (5) are made of epoxy resin composite materials.

4. A pressure-resistant and corrosion-resistant seamless steel pipe according to claim 2, characterized in that: The outer side of the first corrosion-resistant layer (1) and the inner side of the second corrosion-resistant layer (5) are coated with a waterproof layer, and the waterproof layer is made of acrylic acid.

5. The pressure-resistant and corrosion-resistant seamless steel pipe according to claim 1, characterized in that: A plurality of groups of first connecting grooves (301) matching with the second reinforcing ribs (401) are provided on the inner side of the first connecting grooves (301), and a plurality of groups of the second reinforcing ribs (401) are connected inside the plurality of groups of first connecting grooves (301).

6. The pressure-resistant and corrosion-resistant seamless steel pipe according to claim 1, characterized in that: The outer side of the inner tube (3) is provided with a plurality of groups of second connection grooves (302) matching the first reinforcing ribs (201), and the plurality of groups of the first reinforcing ribs (201) are connected inside the plurality of groups of second connection grooves (302).

7. The pressure-resistant and corrosion-resistant seamless steel pipe according to claim 1, characterized in that: The first pressure-resistant layer (2) and the second pressure-resistant layer (4) are made of composite titanium alloy nanolayers.

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