Wear-resistant seamless tube

Abstract

The utility model discloses a wear-resistant seamless pipe which comprises a pipe body and a protective pipe surrounding the outer side of the pipe body, a first anti-oxidation layer is fixed to the outer surface of the pipe body in a surrounding mode, a first wear-resistant layer is fixed to the outer surface of the first anti-oxidation layer in a surrounding mode, and a second anti-oxidation layer is fixed to the outer surface of the protective pipe in a surrounding mode. A second wear-resistant layer is fixed to the outer surface of the second anti-oxidation layer in a surrounding mode, a plurality of supporting pieces and a plurality of elastic buffering pieces are connected between the protection pipe and the pipe body in the circumferential direction and are arranged in a spaced and staggered mode, and the protection pipe on the outer side can protect the pipe body on the inner side; the protective pipe is suitable for high-temperature and high-pressure or high-temperature flue gas and water vapor environments and has good anti-abrasion performance, the protective pipe and the pipe body are connected and supported through the supporting piece, the structural strength is improved, the elastic buffering piece can buffer and weaken external force impact borne by the protective pipe, and therefore force borne by the pipe body is reduced, and the pipe body is protected.

Description

Technical Field

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

[0002] A steel pipe made of a whole piece of metal with no seams on the surface is called a seamless steel pipe. According to the production method, seamless pipes are divided into hot-rolled pipes, cold-rolled pipes, cold-drawn pipes, extruded pipes and jacking pipes, etc. However, in actual use, the existing seamless pipes do not have a wear-resistant and corrosion-resistant structure. Because of the different practical environments, when they are in high temperature and high pressure or high temperature flue gas and water vapor environments for a long time, they are prone to oxidation and corrosion, which will lead to easy wear due to corrosion. When they are in an environment that is easily impacted by external forces, the surface of the seamless pipe will also cause wear due to the lack of elastic space, which will lead to rupture and other situations, shortening the service life of the seamless pipe and affecting normal use. Utility Model Content

[0003] The purpose of the utility model is to provide a wear-resistant seamless pipe to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a wear-resistant seamless pipe, comprising a pipe body and a protective pipe surrounding the outside of the pipe body, the outer surface of the pipe body is surrounded and fixed with a first anti-oxidation layer, the outer surface of the first anti-oxidation layer is surrounded and fixed with a first wear-resistant layer, the outer surface of the protective pipe is surrounded and fixed with a second anti-oxidation layer, the outer surface of the second anti-oxidation layer is surrounded and fixed with a second wear-resistant layer, a plurality of support members and a plurality of elastic buffer members are connected circumferentially between the protective pipe and the pipe body, and the plurality of support members and the plurality of elastic buffer members are arranged at intervals and staggered.

[0005] By adopting the above technical solution, the protective tube and the tube body are double-layered so that the outer protective tube can protect the inner tube body. The first oxidation layer and the second oxidation layer are provided so that the surfaces of the protective tube and the tube body have certain anti-oxidation and anti-corrosion properties, which are suitable for high temperature and high pressure or high temperature flue gas and water vapor environments. The first anti-wear layer and the second anti-wear layer are provided so that the surfaces of the protective tube and the tube body have good anti-wear properties. The support connects the protective tube and the tube body and provides support, which increases the structural strength. The elastic buffer can buffer and weaken the external force impact on the protective tube, thereby reducing the force on the tube body and protecting the tube body.

[0006] As a further optimization of the present invention, the top of the support member is fixed to the inner wall of the protective tube, and the bottom is fixed to the outer wall of the tube body, and a cavity is defined in the support member.

[0007] By adopting the above technical solution, if the protective tube is hit by a large external force and the support member is deformed, the cavity can collapse to buffer and reduce the impact force, thereby protecting the tube body.

[0008] As a further optimization of the present invention, the two sides of the support member are symmetrical with respect to the radial axis direction of the tube body, and the cross section of the support member is narrow on the outside and wide on the inside.

[0009] By adopting the above technical solution, the support member is set to a symmetrical structure, so that the force is more evenly distributed. The cross-section of the support member is narrow on the outside and wide on the inside, which has higher structural stability, thereby improving the overall structural strength.

[0010] As a further optimization of the present invention, two cavities are provided and are symmetrical with respect to the radial axis direction of the tube body, and the cross section of the cavity is triangular.

[0011] By adopting the above technical solution, the cavity is set to be triangular, which has better stability and further improves the overall structural strength.

[0012] As a further optimization of the present invention, the elastic buffer is a damping spring.

[0013] As a further optimization of the present invention, the first anti-oxidation layer and the second anti-oxidation layer are both made of anti-rust paint.

[0014] As a further optimization of the present invention, both the first wear-resistant layer and the second wear-resistant layer are composite layers formed by combining iron oxide powder and metal ceramics.

[0015] The beneficial effects of the present invention are as follows: the protective tube and the tube body adopt a double-layer setting so that the outer protective tube can protect the inner tube body, and the first oxidation layer and the second oxidation layer are provided so that the surfaces of the protective tube and the tube body have certain anti-oxidation and anti-corrosion properties, which are suitable for high temperature and high pressure or high temperature flue gas and water vapor environments, and the first anti-wear layer and the second anti-wear layer are provided so that the surfaces of the protective tube and the tube body have good anti-wear properties, the support member connects the protective tube and the tube body and provides support, thereby increasing the structural strength, and the elastic buffer member can buffer and weaken the external force impact on the protective tube, thereby reducing the force on the tube body and protecting the tube body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 2 for Figure 1 A magnified schematic diagram of .

[0018] The meaning of the numbers in the figure: 11, pipe body; 12, protective tube; 21, first anti-oxidation layer; 22, second anti-oxidation layer; 31, first wear-resistant layer; 32, second wear-resistant layer; 4, elastic buffer; 5, support member; 6, cavity. DETAILED DESCRIPTION

[0019] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0020] See attached Figure 1-2 The embodiment disclosed in the present utility model further provides: a wear-resistant seamless pipe, comprising a pipe body 11 and a protective pipe 12 surrounding the outside of the pipe body 11, wherein a first anti-oxidation layer 21 is fixed around the outer surface of the pipe body 11, a first wear-resistant layer 31 is fixed around the outer surface of the first anti-oxidation layer 21, a second anti-oxidation layer 22 is fixed around the outer surface of the protective pipe 12, and a second wear-resistant layer 32 is fixed around the outer surface of the second anti-oxidation layer 22. Specifically, the first anti-oxidation layer 21 and the second anti-oxidation layer 22 are both made of anti-rust paint, and the first wear-resistant layer 31 and the second wear-resistant layer 32 are both composite layers composed of iron oxide powder and metal ceramics;

[0021] Several support members 5 and several elastic buffer members 4 are connected between the protection tube 12 and the tube body 11 along the circumferential direction. The support members 5 and the elastic buffer members 4 are arranged alternately. Specifically, the elastic buffer members 4 are damping springs.

[0022] The top of the support member 5 is fixed to the inner wall of the protective tube 12, and the bottom is fixed to the outer wall of the pipe body 11. A cavity 6 is opened in the support member 5. The two sides of the support member 5 are symmetrical about the radial axis direction of the pipe body 11. The cross-section of the support member 5 is narrow on the outside and wide on the inside. There are two cavities 6 and they are symmetrical about the radial axis direction of the pipe body 11. The cross-section of the cavity 6 is triangular.

[0023] The principle of the present invention is as follows: the protective tube 12 and the pipe body 11 adopt a double-layer arrangement so that the outer protective tube 12 can protect the inner pipe body 11; the first and second oxide layers are provided so that the surfaces of the protective tube 12 and the pipe body 11 have certain oxidation resistance and corrosion resistance, and are suitable for environments of high temperature and high pressure or high temperature flue gas and water vapor; the first and second anti-wear layers are provided so that the surfaces of the protective tube 12 and the pipe body 11 have good wear resistance;

[0024] The support member 5 connects the protective tube 12 with the tube body 11 and provides support. The support member 5 is set to a symmetrical structure so that the force is more evenly distributed. The cross-section of the support member 5 is narrow on the outside and wide on the inside, and the structural stability is higher, thereby improving the overall structural strength. If the protective tube 12 is hit by a large external force and the support member 5 is deformed, the cavity 6 can collapse, buffering and reducing the impact force, thereby protecting the tube body 11.

[0025] The elastic buffer member 4 can buffer and weaken the external force impact on the protection tube 12, thereby reducing the force on the tube body 11 and protecting the tube body 11.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications based on the above assumptions should also be regarded as within the scope of protection of the present invention.

Claims

1. A wear-resistant seamless pipe, characterized in that: The invention comprises a pipe body (11) and a protective pipe (12) surrounding the outer side of the pipe body (11); a first anti-oxidation layer (21) is fixed around the outer surface of the pipe body (11); a first wear-resistant layer (31) is fixed around the outer surface of the first anti-oxidation layer (21); a second anti-oxidation layer (22) is fixed around the outer surface of the protective pipe (12); a second wear-resistant layer (32) is fixed around the outer surface of the second anti-oxidation layer (22); a plurality of support members (5) and a plurality of elastic buffer members (4) are connected circumferentially between the protective pipe (12) and the pipe body (11); the plurality of support members (5) and the plurality of elastic buffer members (4) are arranged in an alternating manner.

2. A wear-resistant seamless pipe according to claim 1, characterized in that: The top of the support member (5) is fixed to the inner wall of the protective tube (12), and the bottom is fixed to the outer wall of the tube body (11). A cavity (6) is provided in the support member (5).

3. A wear-resistant seamless pipe according to claim 1 or 2, characterized in that: The two sides of the support member (5) are symmetrical with respect to the radial axis direction of the tube body (11), and the cross section of the support member (5) is narrow on the outside and wide on the inside.

4. The wear-resistant seamless pipe according to claim 2, characterized in that: The cavities (6) are provided with two cavities (6) which are symmetrical with respect to the radial axis direction of the tube body (11), and the cross section of the cavities (6) is triangular.

5. The wear-resistant seamless pipe according to claim 1, characterized in that: The elastic buffer (4) is a damping spring.

6. The wear-resistant seamless pipe according to claim 1, characterized in that: The first anti-oxidation layer (21) and the second anti-oxidation layer (22) are both made of anti-rust paint.

7. The wear-resistant seamless pipe according to claim 1, characterized in that: The first wear-resistant layer (31) and the second wear-resistant layer (32) are both composite layers formed by combining iron oxide powder and metal ceramics.

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