Wear-resistant and pressure-resistant stainless steel pipe

Abstract

The utility model relates to the technical field of stainless steel pipes, in particular to a wear-resistant and pressure-resistant stainless steel pipe which comprises an inner pipe and an outer pipe, the inner pipe is arranged in the outer pipe, a pressure-resistant component is arranged between the inner pipe and the outer pipe, an anti-corrosion coating is arranged in the inner pipe, a wear-resistant coating is arranged outside the outer pipe, and the wear-resistant coating is arranged between the inner pipe and the outer pipe. The compression-resistant assembly comprises a plurality of annular I-shaped steel plates fixed between the inner pipe and the outer pipe at equal intervals, and a rubber layer is arranged between every two adjacent I-shaped steel plates. The pressure-resistant pipeline has the advantages that the pressure-resistant assembly composed of the annular I-shaped steel plates and the rubber layers which are matched at equal intervals bears external force compression or impact force borne by the stainless steel pipe, the pressure resistance and impact resistance of the pipeline are improved, and the pressure-resistant pipeline is simple in structure and convenient to manufacture.

Description

Technical Field

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

[0002] A stainless steel pipe is a hollow long round steel, mainly widely used in the conveying pipelines of industries such as petroleum, chemical industry, medical treatment, food, light industry, and mechanical instruments, as well as mechanical structure components. When the stainless steel pipe has the same bending and torsional strength, it is lighter in weight, so it is also widely used in manufacturing mechanical parts and engineering structures. In addition, stainless steel pipes are also commonly used as furniture and kitchen utensils, etc. The material of the stainless steel pipe is usually stainless steel, which has the characteristic of not being easy to rust and is non-magnetic, so it is commonly used in pipelines for conveying fluids.

[0003] Chinese Publication No.: CN214789535U discloses a pressure-resistant and wear-resistant stainless steel pipe, which includes an outer pipe, an inner pipe is arranged inside the outer pipe, and a number of compression-resistant components are evenly distributed along the outer circumference of the inner pipe between the inner and outer pipes. Through the compression-resistant components, the device of this application can not only disperse the pressure borne by the outer pipe to the inner pipe, but also bear part of the pressure, improving the overall pressure resistance of the stainless steel pipe. However, the compression-resistant component is composed of a number of arc-shaped protrusions with hollow interiors and shock-absorbing springs arranged therein, and the number of arc-shaped protrusions are connected by connecting parts. When installing this compression-resistant component, it is necessary to open slots on the outer side of the inner pipe that cooperate with the connecting parts, and install shock-absorbing springs one by one in the arc-shaped protrusions, with a complex structure and inconvenient production. Content of the Utility Model

[0004] I. Technical Problems to be Solved

[0005] The technical problem to be solved by the utility model is that the existing wear-resistant and pressure-resistant stainless steel pipes need to open slots on the outer side of the inner pipe and install a number of shock-absorbing springs, which is inconvenient for production.

[0006] II. Technical Solution

[0007] To solve the above technical problems, the technical solution provided by the utility model is: a wear-resistant and pressure-resistant stainless steel pipe, including an inner pipe and an outer pipe, the inner pipe is arranged inside the outer pipe, a compression-resistant component is arranged between the inner pipe and the outer pipe, an anti-corrosion coating is arranged inside the inner pipe, a wear-resistant coating is arranged outside the outer pipe, and the compression-resistant component includes a number of I-shaped steel plates fixed annularly and equidistantly between the inner pipe and the outer pipe, and a rubber layer is arranged between adjacent I-shaped steel plates.

[0008] Further, the I-shaped steel plate includes an arc-shaped top plate one in contact with the inner side of the outer pipe and an arc-shaped top plate two in contact with the outer side of the inner pipe. A support plate is arranged at the center between the arc-shaped top plate one and the arc-shaped top plate two, and grooves are arranged on both sides of the support plate.

[0009] Furthermore, rubber convex plates inserted into the grooves are provided on both sides of the rubber layer.

[0010] Furthermore, the anti-corrosion coating is an epoxy ceramic layer.

[0011] Furthermore, the wear-resistant coating is a silicon nitride layer.

[0012] III. Beneficial Effects

[0013] The advantages of the present utility model compared with the prior art are as follows:

[0014] 1. The compression-resistant component composed of several annularly and equidistantly matched I-shaped steel plates and a rubber layer bears the external pressure or impact force on the stainless steel pipe, improving the compression resistance and impact resistance of the pipeline, and having a simple structure and being convenient for manufacturing.

[0015] 2. The wear resistance of the stainless steel pipe is improved by the wear-resistant coating of the silicon nitride layer; the stainless steel pipe can transport some fluids with strong corrosiveness through the anti-corrosion coating of the epoxy ceramic layer, enhancing the corrosion resistance of the stainless steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structure diagram of the present utility model.

[0017] Figure 2 is the overall internal structure diagram of the present utility model.

[0018] Figure 3 is the structure diagram of the I-shaped steel plate of the present utility model.

[0019] Figure 4 is the structure diagram of the rubber layer of the present utility model.

[0020] As shown in the figure: 1. Inner pipe; 2. Outer pipe; 3. Compression-resistant component; 4. Anti-corrosion coating; 5. Wear-resistant coating; 6. I-shaped steel plate; 601. First arc-shaped top plate; 602. Second arc-shaped top plate; 603. Support plate; 604. Groove; 7. Rubber layer; 701. Rubber convex plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] Embodiment 1

[0023] Combined with the attached Figure 1 and attached Figure 2, a wear-resistant and pressure-resistant stainless steel pipe, comprising an inner pipe 1 and an outer pipe 2. The inner pipe 1 is arranged inside the outer pipe 2. A compressive component 3 is provided between the inner pipe 1 and the outer pipe 2. An anti-corrosion coating 4 is provided inside the inner pipe 1. A wear-resistant coating 5 is provided outside the outer pipe 2. The compressive component 3 includes a number of I-shaped steel plates 6 fixed annularly and equidistantly between the inner pipe 1 and the outer pipe 2. A rubber layer 7 is provided between adjacent I-shaped steel plates 6.

[0024] Combined with the above structure, the compressive component 3 bears the pressure received by the inner pipe 1 and the outer pipe 2. The compressive component 3 is composed of a number of I-shaped steel plates 6 and rubber layers 7 that are annularly and equidistantly matched. The structure is simple and convenient for manufacturing. The anti-corrosion coating 4 enhances the corrosion resistance of the stainless steel pipe, facilitating the transportation of some fluids with strong corrosiveness. The wear-resistant coating 5 increases the anti-wear ability of the stainless steel pipe after contact with the outside world, reducing the wear of the stainless steel pipe itself after long-term use and ensuring the integrity of the stainless steel pipe.

[0025] Combined with the atta Figure 3 , the I-shaped steel plate 6 includes an arc top plate one 601 in contact with the inner side of the outer pipe 2 and an arc top plate two 602 in contact with the outer side of the inner pipe 1. A support plate 603 is provided at the center between the arc top plate one 601 and the arc top plate two 602. Grooves 604 are provided on both sides of the support plate 603.

[0026] Combined with the above structure, the cross-section of the I-shaped steel plate 6 is in the shape of "I". This design makes its section modulus large, capable of withstanding large bending moments and shear forces, and enhancing the compressive and tensile properties of the overall steel pipe.

[0027] Combined with the atta Figure 4 , rubber convex plates 701 inserted into the grooves 604 are provided on both sides of the rubber layer 7.

[0028] Combined with the above structure, the rubber layer 7 can enhance the impact resistance of the pipeline. It has a low density, light weight, good vibration absorption performance and excellent mechanical impact resistance. This helps to improve the strength and stiffness of the pipeline, reduce the creep phenomenon, and thus enhance the impact resistance and seismic resistance of the pipeline.

[0029] Combined with the atta Figure 2 , the anti-corrosion coating 4 is an epoxy ceramic layer. Epoxy ceramic is an anti-corrosion coating composed of epoxy resin and a large amount (more than 50% by weight) of quartz powder. The coating has high hardness, is smooth and wear-resistant, but also has a certain toughness, improving the anti-corrosion performance of the stainless steel pipe.

[0030] Combined with the atta Figure 2 , the wear-resistant coating 5 is a silicon nitride layer. Silicon nitride has extremely high hardness and excellent wear resistance, improving the wear resistance of the stainless steel pipe.

[0031] The specific implementation method is as follows:

[0032] When the device of the present application is specifically used, the wear-resistant coating 5 of the silicon nitride layer improves the wear resistance of the stainless steel pipe; the anti-corrosion coating 4 of the epoxy ceramic layer enables the stainless steel pipe to convey some highly corrosive fluids, enhancing the corrosion resistance of the stainless steel pipe; when the inner pipe 1 and the outer pipe 2 of the stainless steel pipe are subjected to external force compression or impact, through the cooperation of the compression-resistant component 3 and a number of annularly and equidistantly arranged I-shaped steel plates 6 and rubber layers 7, the pressure and impact force are borne, improving the service life of the pipeline.

[0033] The above describes the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the gist of the creation of the present utility model, they shall fall within the protection scope of the present utility model.

Claims

1. A wear-resistant and pressure-resistant stainless steel tube, comprising an inner tube (1) and an outer tube (2), characterized in that: The inner tube (1) is arranged inside the outer tube (2), a pressure-resistant component (3) is arranged between the inner tube (1) and the outer tube (2), an anti-corrosion coating (4) is arranged inside the inner tube (1), and a wear-resistant coating (5) is arranged outside the outer tube (2); The pressure-resistant assembly (3) comprises a plurality of annular I-shaped steel plates (6) fixed at equal intervals between the inner tube (1) and the outer tube (2), and a rubber layer (7) is provided between adjacent I-shaped steel plates (6).

2. The wear-resistant and pressure-resistant stainless steel pipe according to claim 1, characterized in that: The I-shaped steel plate (6) comprises an arc-shaped top plate 1 (601) in contact with the inner side of the outer tube (2) and an arc-shaped top plate 2 (602) in contact with the outer side of the inner tube (1). A support plate (603) is provided at the center between the arc-shaped top plate 1 (601) and the arc-shaped top plate 2 (602). Grooves (604) are provided on both sides of the support plate (603).

3. The wear-resistant and pressure-resistant stainless steel pipe according to claim 2, characterized in that: Rubber convex plates (701) inserted into the grooves (604) are provided on both sides of the rubber layer (7).

4. The wear-resistant and pressure-resistant stainless steel pipe according to claim 1, characterized in that: The anti-corrosion coating (4) is an epoxy ceramic layer.

5. The wear-resistant and pressure-resistant stainless steel pipe according to claim 1, characterized in that: The wear-resistant coating (5) is a silicon nitride layer.

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