Anti-bending seamless tube

Abstract

The utility model discloses an anti-bending seamless tube which comprises an outer tube body and an inner tube body, a plurality of reinforcing pieces are arranged on the inner wall of the outer tube body at equal intervals in the circumferential direction, the inner ends of the reinforcing pieces are connected with the inner tube body, and a plurality of protruding blocks are arranged on the outer wall of the inner tube body at equal intervals in the circumferential direction. The protruding blocks and the reinforcing parts are sequentially arranged in a staggered mode in the circumferential direction, the tops of the protruding blocks abut against the inner wall of the outer pipe body, an arch-shaped hole is formed in the inner side of each protruding block, the two sides of each protruding block abut against the adjacent reinforcing parts, and the reinforcing parts have high structural strength and provide good compression resistance and bending resistance. Meanwhile, the tops of the protruding blocks are stressed, the pressure of the tops is decomposed into lateral force to be transmitted to the reinforcing pieces on the two sides through the arrangement of the arch-shaped hole structures, the stress is transmitted and reduced due to the fact that the protruding blocks and the reinforcing pieces are annularly and tightly attached, and therefore the bending deformation resistance of the seamless pipe is enhanced.

Description

Technical Field

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

[0002] Seamless steel pipe is a steel pipe made from a single piece of metal with no seams on the surface. Based on the production method, seamless pipes are categorized as hot-rolled, cold-rolled, cold-drawn, extruded, and jacked. Stainless steel seamless pipes have thicker inner walls and are widely used in industrial pipelines, such as those in the petrochemical industry, light industry, and mechanical instrumentation, as well as in mechanical structural components.

[0003] However, due to the inherent rigidity of the existing seamless steel pipes, they are prone to deformation and bending during use, such as when impacted by external forces, which affects the normal use of the steel pipes. This leads to an increase in the cost of use, and a seamless pipe with anti-bending properties is needed. Utility Model Content

[0004] The purpose of the utility model is to provide a bending-resistant seamless pipe to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a bending-resistant seamless tube, comprising an outer tube body and an inner tube body, the inner wall of the outer tube body is provided with a plurality of reinforcements at equal intervals along the circumferential direction, the inner ends of the reinforcements are connected to the inner tube body, the outer wall of the inner tube body is provided with a plurality of protrusions at equal intervals along the circumferential direction, the protrusions and the reinforcements are staggered in sequence in the circumferential direction, the top of the protrusions abuts against the inner wall of the outer tube body, an arched hole is opened on the inner side of each protrusion and the two sides abut against the adjacent reinforcements.

[0006] By adopting the above technical solution, when the outer tube body is connected to the inner tube body, the inner tube body is inserted into the inner part of the outer tube body and fixed. After the connection is completed, the top of the protrusion abuts against the inner wall of the outer tube body, and the side wall of the protrusion abuts against the reinforcement. When the outer tube body is impacted by external force, the multiple reinforcements have strong structural strength and provide better compression and bending resistance. At the same time, the top of the protrusion is subjected to pressure. Through the setting of the arched hole structure, the pressure on the top is decomposed into lateral force and transmitted to the reinforcements on both sides. Because the multiple protrusions and reinforcements are in a ring-shaped and close contact, the force is transmitted and reduced, thereby enhancing the bending and deformation resistance of the seamless pipe. At the same time, the setting of the arched hole also reduces the overall quality of the seamless pipe, reduces consumables, and thus reduces costs.

[0007] As a further optimization of the present invention, the outer wall of the inner tube body is provided with a plurality of fixing grooves corresponding to a plurality of reinforcement members at equal intervals along the circumferential direction, the inner end of the reinforcement member is plugged into the fixing groove, and the outer end of the reinforcement member is welded to the inner wall of the outer tube body.

[0008] By adopting the above technical solution, the reinforcement is firmly connected to the outer tube body by welding. When the outer tube body is connected to the inner tube body, the fixing groove can play a positioning role. After the two are connected, the reinforcement extends into the groove to improve the structural strength of the inner tube body, while enhancing the connection strength between the inner tube body and the outer tube body.

[0009] As a further optimization of the present invention, the inner wall of the outer tube body is provided with a pair of support blocks on both sides of each reinforcement member, and the support blocks are welded and fixed to the reinforcement member.

[0010] By adopting the above technical solution, support blocks are provided to support both sides of the reinforcement, so as to prevent the reinforcement from tilting to one side when the reinforcement is subjected to force, thereby further improving the bending resistance of the seamless pipe.

[0011] As a further optimization of the present invention, the reinforcement is an H-shaped steel.

[0012] By adopting the above technical solution, the H-shaped steel has good bending resistance in all directions, so the bending deformation resistance of the seamless pipe can be greatly improved.

[0013] As a further optimization of the present invention, the outer wall of the outer tube body is provided with a circle of protective outer layer, and the inner wall of the inner tube body is provided with a circle of protective inner layer, and the protective inner layer and the protective outer layer are both made of alloy material.

[0014] By adopting the above technical solution, providing a protective inner layer and a protective outer layer can further enhance the surface structural strength of the seamless pipe, enhance the corrosion resistance of the seamless pipe, and avoid bending of the seamless pipe due to corrosion deformation.

[0015] The beneficial effects of the present invention are as follows: when the outer tube body is connected to the inner tube body, the inner tube body is inserted into the inner part of the outer tube body and then fixed. After the connection is completed, the top of the protrusion abuts against the inner wall of the outer tube body, and the side wall of the protrusion abuts against the reinforcement. When the outer tube body is impacted by external force, the multiple reinforcements have strong structural strength and provide better compression and bending resistance. At the same time, the top of the protrusion is subjected to pressure. Through the setting of the arched hole structure, the pressure on the top is decomposed into lateral force and transmitted to the reinforcements on both sides. Because the multiple protrusions and reinforcements are in a ring-shaped and close contact, the force is transmitted and reduced, thereby enhancing the performance of the seamless pipe in resisting bending and deformation. At the same time, the setting of the arched hole also reduces the overall quality of the seamless pipe, reduces consumables, and thus reduces costs. 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 This is a schematic diagram of the cross-sectional structure of the outer tube body of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the inner tube body in the present utility model.

[0019] The meaning of the numbers in the figure: 1. Outer tube body; 2. Inner tube body; 3. Reinforcement member; 4. Protrusion; 5. Arched hole; 6. Fixing groove; 7. Support block; 81. Protective inner layer; 82. Protective outer layer. DETAILED DESCRIPTION

[0020] 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.

[0021] See attached Figure 1-3 , the embodiment disclosed in the present utility model further provides: a bending-resistant seamless pipe, comprising an outer pipe body 1 and an inner pipe body 2, specifically, the inner pipe body 2 and the outer pipe body 1 are both made of steel;

[0022] The inner wall of the outer tube body 1 is provided with a plurality of reinforcement members 3 at equal intervals along the circumferential direction. Specifically, the reinforcement members 3 are H-shaped steels. The outer wall of the inner tube body 2 is provided with a plurality of fixing grooves 6 at equal intervals along the circumferential direction, which correspond one to one with the plurality of reinforcement members 3. The inner ends of the reinforcement members 3 are plugged into the fixing grooves 6, and the outer ends of the reinforcement members 3 are welded to the inner wall of the outer tube body 1. Furthermore, a pair of support blocks 7 are provided on both sides of each reinforcement member 3 on the inner wall of the outer tube body 1. The support blocks 7 are welded and fixed to the reinforcement members 3.

[0023] The outer wall of the inner tube body 2 is provided with a plurality of protrusions 4 at equal intervals along the circumferential direction. The protrusions 4 and the reinforcement members 3 are staggered in the circumferential direction. The top of the protrusion 4 abuts the inner wall of the outer tube body 1. An arched hole 5 is opened on the inner side of each protrusion 4, and both sides abut the adjacent reinforcement member 3.

[0024] Furthermore, the outer wall of the outer tube body 1 is provided with a circle of protective outer layer 82, and the inner wall of the inner tube body 2 is provided with a circle of protective inner layer 81. Both the protective inner layer 81 and the protective outer layer 82 are made of alloy material.

[0025] The principle of the present invention is as follows: the reinforcement member 3 is firmly connected to the outer tube body 1 by welding. When the outer tube body 1 is connected to the inner tube body 2, the inner tube body 2 is inserted into the inner part of the outer tube body 1 and fixed. The fixing groove 6 can play a positioning role. After the two are connected, the reinforcement member 3 extends into the groove to improve the structural strength of the inner tube body 2 and at the same time enhance the connection strength between the inner tube body 2 and the outer tube body 1. After the connection is completed, the top of the protrusion 4 abuts against the inner wall of the outer tube body 1, and the side wall of the protrusion 4 abuts against the reinforcement member 3.

[0026] When the outer tube body 1 is impacted by external force, the H-shaped steel has good bending resistance in all directions, so the bending deformation resistance of the seamless tube can be greatly improved. Therefore, multiple reinforcements 3 provide good compression and bending resistance. Support blocks 7 are provided to support both sides of the reinforcement 3 to prevent the reinforcement 3 from tilting to one side when the reinforcement 3 is subjected to force, thereby further improving the bending resistance of the seamless tube.

[0027] At the same time, the top of the protrusion 4 is subjected to pressure. The arched hole 5 structure decomposes the pressure on the top into lateral force and transmits it to the reinforcements 3 on both sides. Since the multiple protrusions 4 and the reinforcements 3 are in close contact in an annular shape, the force is transmitted and reduced, thereby enhancing the anti-bending and deformation performance of the seamless pipe. At the same time, the arrangement of the arched hole 5 also reduces the overall mass of the seamless pipe, reduces consumables, and thus reduces costs.

[0028] Providing the protective inner layer 81 and the protective outer layer 82 can further enhance the surface structural strength of the seamless pipe, enhance the corrosion resistance of the seamless pipe, and prevent the seamless pipe from bending due to corrosion deformation.

[0029] 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 bending-resistant seamless pipe, characterized in that: The invention comprises an outer tube body (1) and an inner tube body (2), wherein the inner wall of the outer tube body (1) is provided with a plurality of reinforcement members (3) at equal intervals along the circumferential direction, the inner end of the reinforcement member (3) is connected to the inner tube body (2), and the outer wall of the inner tube body (2) is provided with a plurality of protrusions (4) at equal intervals along the circumferential direction, the protrusions (4) and the reinforcement members (3) are arranged alternately in the circumferential direction, the top of the protrusion (4) abuts against the inner wall of the outer tube body (1), and an arched hole (5) is opened on the inner side of each protrusion (4), and the two sides abut against the adjacent reinforcement members (3).

2. The anti-bending seamless pipe according to claim 1, characterized in that: The outer wall of the inner tube body (2) is provided with a plurality of fixing grooves (6) corresponding to the plurality of reinforcing members (3) at equal intervals along the circumferential direction; the inner ends of the reinforcing members (3) are plugged into the fixing grooves (6); and the outer ends of the reinforcing members (3) are welded to the inner wall of the outer tube body (1).

3. A bending-resistant seamless pipe according to claim 1 or 2, characterized in that: The inner wall of the outer tube body (1) is provided with a pair of support blocks (7) on both sides of each reinforcement member (3), and the support blocks (7) are fixed to the reinforcement member (3) by welding.

4. The anti-bending seamless pipe according to claim 1, characterized in that: The reinforcement (3) is an H-shaped steel.

5. The anti-bending seamless pipe according to claim 1, characterized in that: The outer wall of the outer tube body (1) is provided with a circle of protective outer layer (82), and the inner wall of the inner tube body (2) is provided with a circle of protective inner layer (81), and the protective inner layer (81) and the protective outer layer (82) are both made of alloy material.

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