Corrosion-resistant buried steel pipe for saline-alkali soil

Abstract

The utility model discloses a corrosion-resistant buried steel pipe for saline-alkali soil, which comprises a water delivery steel pipe and is characterized in that a protective net cover for covering the water delivery steel pipe is arranged on the outer side of the water delivery steel pipe, a plurality of equilong connecting pieces are fixed on the protective net cover along the length direction of the protective net cover, one end of each connecting piece is welded and fixed with the protective net cover, and the other end of each connecting piece is welded and fixed with the water delivery steel pipe. The water conveying steel pipe comprises a steel pipe body, an anti-corrosion coating, a glass fiber filling layer, a waterproof layer and a polyurethane protection layer, the anti-corrosion coating is fixedly installed on the outer wall of the steel pipe body, the glass fiber filling layer is fixedly installed on the outer wall of the anti-corrosion coating, and the waterproof layer is fixedly installed on the outer wall of the waterproof layer. The outer wall of the glass fiber filling layer is fixedly provided with a waterproof layer, and the outer wall of the waterproof layer is fixedly provided with a polyurethane protection layer. According to the utility model, the water delivery steel pipe is covered and protected by the protective net sleeve, direct contact with the saline-alkali soil is avoided, and the water delivery steel pipe is protected against corrosion and water, so that reliable corrosion prevention is realized.

Description

Technical Field

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

[0002] Underground steel pipe is a water pipe buried underground. When the water pipe passes through saline-alkali land, it will be corroded by the saline-alkali land. Over time, the service life of the water pipe will be seriously reduced, and the replacement and maintenance costs will be high. Utility Model Content

[0003] The purpose of the present application is to provide a corrosion-resistant buried steel pipe for saline-alkali land to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a corrosion-resistant buried steel pipe in saline-alkali land, comprising a water delivery steel pipe, the outer side of the water delivery steel pipe is provided with a protective mesh sleeve covering the water delivery steel pipe, the protective mesh sleeve is fixedly installed with a plurality of equal-length connecting pieces along its length direction, one end of the connecting piece is welded and fixed to the protective mesh sleeve, and the other end of the connecting piece is welded and fixed to the water delivery steel pipe, the water delivery steel pipe comprises a steel pipe body, an anti-corrosion coating, a glass fiber filling layer, a water-blocking layer and a polyurethane protective layer, the outer wall of the steel pipe body is fixedly installed with an anti-corrosion coating, the outer wall of the anti-corrosion coating is fixedly installed with a glass fiber filling layer, the outer wall of the glass fiber filling layer is fixedly installed with a water-blocking layer, and the outer wall of the water-blocking layer is fixedly installed with a polyurethane protective layer.

[0005] Preferably, the anti-corrosion coating, glass fiber filling layer, water-blocking layer and polyurethane protective layer are all arranged along the length direction of the steel pipe body and are of the same length as the steel pipe body.

[0006] Preferably, the protective net sleeve includes a number of evenly spaced and coaxial steel rings, connecting reinforcement ribs connecting the steel rings, and a retaining steel mesh covering the gaps between the connecting reinforcement ribs and the steel rings. The steel rings, connecting reinforcement ribs and retaining steel mesh are welded and fixed, and the surfaces of the steel rings, connecting reinforcement ribs and retaining steel mesh are coated with anti-corrosion paint.

[0007] Preferably, the protective mesh sleeve is arranged along the length direction of the water supply steel pipe and is the same length as the water supply steel pipe.

[0008] Preferably, the connecting member comprises a strip plate and two arc plates fixedly connected to both sides of the strip plate, and the two arc plates are respectively fixedly connected to the water delivery steel pipe and the protective mesh sleeve.

[0009] Preferably, the anti-corrosion coating is an epoxy resin powder coating.

[0010] In summary, the technical effects and advantages of the utility model are:

[0011] In the utility model, the water delivery steel pipe is covered and protected by the protective mesh sleeve to avoid direct contact with saline-alkali land. The water delivery steel pipe itself is protected against corrosion and water blocking, thereby achieving reliable anti-corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is a schematic diagram of the structure of a corrosion-resistant buried steel pipe in saline-alkali land in an embodiment of the present application;

[0014] Figure 2 This is a schematic diagram of a protective mesh structure for a corrosion-resistant buried steel pipe in saline-alkali land in an embodiment of the present application;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of a water delivery steel pipe of a corrosion-resistant buried steel pipe in saline-alkali land in an embodiment of the present application.

[0016] In the figure: 1. Water supply steel pipe; 2. Protective mesh; 3. Connectors; 4. Steel pipe body; 5. Anti-corrosion coating; 6. Glass fiber filling layer; 7. Water-blocking layer; 8. Polyurethane protective layer; 9. Strip plate; 10. Arc plate; 11. Steel ring; 12. Connection reinforcement ribs; 13. Retaining steel mesh. 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] In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] It should also be noted that the standard parts used in this application document can be purchased from the market, and can be customized according to the description in the specification and drawings. Unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, and it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to the specific circumstances, and in the absence of clear limitations, machines, parts and equipment can all adopt conventional models in the prior art.

[0020] In this article, the term "comprising" is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "comprising..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0021] Example: Reference Figure 1-3 A corrosion-resistant buried steel pipe for saline-alkali land shown in the figure comprises a water delivery steel pipe 1, the outer side of the water delivery steel pipe 1 is provided with a protective mesh sleeve 2 which covers the water delivery steel pipe 1, the protective mesh sleeve 2 is fixedly installed with a plurality of equal-length connectors 3 along its length direction, one end of the connector 3 is welded and fixed to the protective mesh sleeve 2, and the other end of the connector 3 is welded and fixed to the water delivery steel pipe 1, the protective mesh sleeve erects the water delivery steel pipe so that it is away from the saline-alkali soil to reduce corrosion caused by direct contact, the water delivery steel pipe 1 comprises a steel pipe body 4, an anti-corrosion coating 5, a glass fiber filling layer 6, a water-blocking layer 7 and a polyurethane protective layer 8, the outer wall of the steel pipe body 4 is fixedly installed with the anti-corrosion coating 5, the outer wall of the anti-corrosion coating 5 is fixedly installed with the glass fiber filling layer 6, the outer wall of the glass fiber filling layer 6 is fixedly installed with the water-blocking layer 7, the outer wall of the water-blocking layer 7 is fixedly installed with the polyurethane protective layer 8, the glass fiber filling layer and the polyurethane protective layer are alkali-resistant and provide anti-corrosion protection, the water-blocking layer prevents water from entering, and reduces the corrosion of the steel pipe body by alkaline water.

[0022] By means of the above structure: the anti-corrosion coating 5 , the glass fiber filling layer 6 , the water-blocking layer 7 and the polyurethane protective layer 8 are all arranged along the length direction of the steel pipe body 4 and are of the same length as the steel pipe body 4 .

[0023] By means of the above structure: the protective net sleeve 2 includes a plurality of uniformly spaced and coaxial steel rings 11, connecting reinforcement ribs 12 connecting the steel rings 11, and a retaining steel net 13 covering the gap between the connecting reinforcement ribs 12 and the steel rings 11, the steel rings 11, the connecting reinforcement ribs 12 and the retaining steel net 13 are welded and fixed, and the surfaces of the steel rings 11, the connecting reinforcement ribs 12 and the retaining steel net 13 are coated with anti-corrosion paint.

[0024] By means of the above structure: the protection net sleeve 2 is arranged along the length direction of the water delivery steel pipe 1 and is equal in length to the water delivery steel pipe 1 .

[0025] With the above structure: the connecting member 3 includes a strip plate 9 and two arc plates 10 fixedly connected to both sides of the strip plate 9, and the two arc plates 10 are fixedly connected to the water delivery steel pipe 1 and the protective mesh sleeve 2 respectively.

[0026] According to the above structure: the anti-corrosion coating 5 is an epoxy resin powder coating.

[0027] Finally, it should be noted that the above are only preferred embodiments of the present invention and are 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 corrosion-resistant buried steel pipe for saline-alkali land, comprising a water delivery steel pipe (1), characterized in that: The outer side of the water delivery steel pipe (1) is provided with a protective mesh sleeve (2) which covers the water delivery steel pipe inside. The protective mesh sleeve (2) is fixedly provided with a plurality of connectors (3) of equal length along its length direction. One end of the connector (3) is welded and fixed to the protective mesh sleeve (2), and the other end of the connector (3) is welded and fixed to the water delivery steel pipe (1). The water delivery steel pipe (1) comprises a steel pipe body (4), an anti-corrosion coating (5), a glass fiber filling layer (6), a water blocking layer (7) and a polyurethane protective layer (8). The outer wall of the steel pipe body (4) is fixedly provided with the anti-corrosion coating (5), the outer wall of the anti-corrosion coating (5) is fixedly provided with the glass fiber filling layer (6), the outer wall of the glass fiber filling layer (6) is fixedly provided with the water blocking layer (7), and the outer wall of the water blocking layer (7) is fixedly provided with the polyurethane protective layer (8).

2. The corrosion-resistant buried steel pipe for saline-alkali land according to claim 1, characterized in that: The anti-corrosion coating (5), the glass fiber filling layer (6), the water-blocking layer (7) and the polyurethane protective layer (8) are all arranged along the length direction of the steel pipe body (4) and are the same length as the steel pipe body (4).

3. The corrosion-resistant buried steel pipe for saline-alkali land according to claim 1, characterized in that: The protective net sleeve (2) comprises a plurality of uniformly spaced and coaxial steel rings (11), connecting reinforcement ribs (12) connecting the steel rings (11), and a retaining steel net (13) covering the gap between the connecting reinforcement ribs (12) and the steel rings (11); the steel rings (11), the connecting reinforcement ribs (12) and the retaining steel net (13) are fixed by welding, and the surfaces of the steel rings (11), the connecting reinforcement ribs (12) and the retaining steel net (13) are coated with anti-corrosion paint.

4. The corrosion-resistant buried steel pipe for saline-alkali land according to claim 1, characterized in that: The protective mesh sleeve (2) is arranged along the length direction of the water delivery steel pipe (1) and is equal in length to the water delivery steel pipe (1).

5. The corrosion-resistant buried steel pipe for saline-alkali land according to claim 1, characterized in that: The connecting member (3) comprises a strip plate (9) and two arc plates (10) fixedly connected to both sides of the strip plate (9); the two arc plates (10) are respectively fixedly connected to the water delivery steel pipe (1) and the protective mesh sleeve (2).

6. The corrosion-resistant buried steel pipe for saline-alkali land according to claim 1, characterized in that: The anti-corrosion coating (5) is an epoxy resin powder coating.

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