Anti-bending compression-resistant seamless steel tube

Abstract

The utility model discloses an anti-bending compression-resistant seamless steel pipe which comprises an outer steel pipe and an inner steel pipe which correspond to each other, the outer steel pipe and the inner steel pipe are coaxially arranged, supporting ribs of a long-strip-shaped structure are fixedly welded between the outer steel pipe and the inner steel pipe, and the supporting ribs are evenly distributed at equal intervals. Mounting grooves are formed in the outer surface of the outer steel pipe at equal intervals, reinforcing ribs for providing pulling force for the outer steel pipe are fixedly welded to the interiors of the mounting grooves, the reinforcing ribs are made of high-strength alloy steel materials, and an anti-explosion ring coaxial with the outer steel pipe is fixedly welded to the exterior of the outer steel pipe. According to the anti-bending compression-resistant seamless steel pipe, the novel structural design is adopted, the mounting grooves are formed in the outer portion of the outer steel pipe at equal intervals, the reinforcing ribs are fixedly welded in the mounting grooves, the reinforcing ribs are made of high-strength alloy steel, and the strength of the reinforcing ribs is larger than that of the steel pipe, so that the purpose of pulling the outer steel pipe can be achieved through the reinforcing ribs; therefore, a better anti-bending effect is achieved.

Description

Technical Field

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

[0002] Seamless steel pipe is a steel pipe that does not undergo welding during the production process. It is usually made from round steel billets through hot rolling or cold drawing. Since there are no welds, seamless steel pipes have better mechanical properties when subjected to pressure and high temperature, so they are widely used in various engineering and industrial fields.

[0003] When seamless steel pipes are used in some large equipment (such as hydraulic presses, stamping machines, etc.), since these equipment need to exert very large forces when working, the strength requirements for seamless steel pipes are relatively high. When the strength of the steel pipe is not enough, bending or flattening will occur.

[0004] For example, in the prior art, a Chinese patent with announcement number CN103104800A (published on 2013-05-15) discloses a double-layer seamless steel pipe. It includes a pipe body and a pipe cavity, the pipe cavity is located in the pipe body, an inner pipe is arranged in the pipe cavity, and the inner pipe is connected to the pipe body through reinforcing ribs. The inner pipe is arranged in the pipe cavity of the pipe body, which can greatly improve the strength of the pipe body. The inner pipe is concentric with the pipe body and connected to the pipe body through uniformly distributed reinforcing ribs, which can make the force balanced, simple in structure, large in bearing force, not easy to break, strong in pressure resistance, wide in application range, and greatly improve the quality of use.

[0005] For example, in the prior art, a Chinese patent with the announcement number CN103104801A (published on 2013-05-15) discloses a reinforced seamless steel pipe. It includes a pipe body and a lumen, the lumen is located in the pipe body, and a partition is arranged in the lumen. The cross-shaped partitions are arranged in the lumen of the pipe body, which can greatly improve the strength of the pipe body. The intersection of the partitions is located at the center of the pipe body, which can make the force balanced, simple in structure, large in supporting force, not easy to break, strong in pressure resistance, wide in application range, and greatly improve the quality of use.

[0006] It can be seen from the above application that most of the existing technologies adopt the method of adding a supporting structure inside the steel pipe to improve the overall strength to achieve the purpose of anti-bending. However, in actual use, the strength achieved by only adding a supporting structure inside is still limited and cannot adapt to a variety of usage environments. Utility Model Content

[0007] The utility model aims to provide a bending-proof and pressure-resistant seamless steel pipe to solve the problem of poor bending-proof effect of the steel pipe in the above-mentioned background technology.

[0008] To achieve the above purpose, the utility model provides the following technical solution: a bending-proof and pressure-resistant seamless steel pipe, comprising an outer steel pipe and an inner steel pipe corresponding to each other, and also comprising:

[0009] The outer steel pipe and the inner steel pipe are coaxially arranged, and support ribs in a long strip structure are fixedly welded between the outer steel pipe and the inner steel pipe, and the support ribs are evenly distributed at equal intervals;

[0010] The outer surface of the outer steel pipe is provided with installation grooves arranged at equal intervals, and reinforcing ribs for providing pulling force for the outer steel pipe are fixedly welded inside the installation grooves.

[0011] Preferably, the reinforcing ribs are made of high-strength alloy steel, and an explosion-proof ring coaxially arranged therewith is fixedly welded to the outside of the outer steel pipe.

[0012] Preferably, the interval between adjacent explosion-proof rings is 50 cm, and the explosion-proof rings are also made of high-strength alloy steel.

[0013] Preferably, a containing cavity is formed between the outer steel tube and the inner steel tube, and the inside of the containing cavity is filled with a filling pad.

[0014] Preferably, the filling pad is made of heat-insulating cotton material.

[0015] Preferably, penetrating weight-reducing holes are provided inside the support ribs, and the weight-reducing holes are evenly distributed at equal intervals.

[0016] Preferably, the outer surface of the outer steel pipe is sprayed with an anti-corrosion coating, and the anti-corrosion coating is made of polyurethane.

[0017] Compared with the prior art, the beneficial effects of the utility model are: the anti-bending and pressure-resistant seamless steel pipe adopts a new structural design, the specific contents of which are as follows:

[0018] 1. The steel pipe is configured as two layers of an outer steel pipe and an inner steel pipe, and a support rib is fixedly welded between the outer steel pipe and the inner steel pipe, so that the inner steel pipe and the support rib can effectively support the outer steel pipe, improve the strength of the outer steel pipe, and achieve the purpose of anti-bending and anti-compression;

[0019] Furthermore, a containing cavity is formed between the outer steel pipe and the inner steel pipe. According to actual use requirements, if the steel pipe is used as a conveying pipe and liquid flows inside, a filling pad can be added in the containing cavity to achieve the purpose of heat insulation.

[0020] 2. The outside of the outer steel pipe is provided with installation grooves arranged at equal intervals, and the inside of the installation groove is fixedly welded with reinforcing ribs. Since the reinforcing ribs are made of high-strength alloy steel, their strength is greater than that of the steel pipe itself, so the reinforcing ribs can be used to pull the outer steel pipe, thereby achieving a better anti-bending effect;

[0021] Furthermore, an anti-corrosion coating is sprayed on the outside of the outer steel pipe, and the anti-corrosion coating is used to isolate the contact between air and the surface of the outer steel pipe, thereby reducing corrosion and increasing the overall service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of the outer steel pipe of the utility model;

[0024] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0025] Figure 4 This is a schematic diagram of the inner steel pipe structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the local structure of the outer steel pipe of the utility model;

[0027] Figure 6 For this utility model Figure 5 Enlarged structural diagram at B in the middle.

[0028] In the figure: 1. Outer steel pipe; 2. Inner steel pipe; 3. Support ribs; 4. Installation groove; 5. Reinforcement ribs; 6. Explosion-proof ring; 7. Accommodation cavity; 8. Filling pad; 9. Weight reduction hole; 10. Anti-corrosion coating. 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] Example 1: Please refer to Figure 1 , Figure 2 and Figure 4 In order to solve the problem of low strength of traditional steel pipes, this embodiment provides the following technical solutions, which specifically disclose: an outer steel pipe 1 and an inner steel pipe 2 corresponding to each other, the outer steel pipe 1 and the inner steel pipe 2 are coaxially arranged, and a supporting rib 3 with a long strip structure is fixedly welded between the outer steel pipe 1 and the inner steel pipe 2, the supporting ribs 3 are evenly distributed at equal intervals, and a through-type weight-reducing hole 9 is opened inside the supporting rib 3, and the weight-reducing holes 9 are evenly distributed at equal intervals.

[0031] When producing steel pipes, firstly, the outer steel pipe 1 and the inner steel pipe 2 are produced separately (both the outer steel pipe 1 and the inner steel pipe 2 are seamless steel pipes), and then the support ribs 3 are placed between the outer steel pipe 1 and the inner steel pipe 2 (the support ribs 3 have weight-reducing holes 9 inside to reduce the overall weight of the steel pipe), and the outer steel pipe 1, the inner steel pipe 2 and the support ribs 3 are welded and fixed to form an integral steel pipe. When the steel pipe is used, the inner steel pipe 2 and the support ribs 3 are used to support the outer steel pipe 1 to achieve a certain anti-bending and anti-compression effect.

[0032] Example 2: Please refer to Figure 3 In order to further improve the bending and compression resistance of the steel pipe, the present embodiment provides the following technical solutions, which specifically disclose: the outer surface of the outer steel pipe 1 is provided with installation grooves 4 arranged at equal intervals, and the inside of the installation grooves 4 is fixedly welded with reinforcing ribs 5 for providing pulling force for the outer steel pipe 1, and the reinforcing ribs 5 are set to be made of high-strength alloy steel, and the outside of the outer steel pipe 1 is fixedly welded with an explosion-proof ring 6 coaxially arranged therewith, the interval between adjacent explosion-proof rings 6 is 50 cm, and the explosion-proof ring 6 is also set to be made of high-strength alloy steel.

[0033] After the inner steel pipe 2 is welded and fixed, the reinforcing rib 5 is fixedly welded in the installation groove 4 on the outer surface of the outer steel pipe 1. The reinforcing rib 5 made of high-strength alloy steel is used to pull the outer steel pipe 1, thereby further improving its anti-bending effect. At the same time, the explosion-proof ring 6 welded at equal intervals on the outside of the outer steel pipe 1 is used to further improve the overall strength of the steel pipe.

[0034] Example 3: Please refer to Figure 5 and Figure 6 In order to extend the service life of the entire steel pipe, this embodiment provides the following technical solutions, which specifically disclose: a accommodating cavity 7 is formed between the outer steel pipe 1 and the inner steel pipe 2, and the accommodating cavity 7 is filled with a filling pad 8, and the filling pad 8 is set to be a heat-insulating cotton material, and the outer surface of the outer steel pipe 1 is sprayed with an anti-corrosion coating 10, and the anti-corrosion coating 10 is made of polyurethane.

[0035] When the steel pipe is used as a conveying pipeline, and when conveying some liquid or gas that needs to maintain temperature, the filling pad 8 can be inserted into the accommodating cavity 7 between the outer steel pipe 1 and the inner steel pipe 2, and the filling pad 8 can be used to achieve the purpose of heat preservation. At the same time, the anti-corrosion coating 10 sprayed on the outer surface of the outer steel pipe 1 can achieve the purpose of anti-corrosion and extend its overall service life.

[0036] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bending-resistant and pressure-resistant seamless steel pipe, comprising an outer steel pipe (1) and an inner steel pipe (2) corresponding to each other, characterized in that: Also includes: The outer steel pipe (1) and the inner steel pipe (2) are coaxially arranged, and a support rib (3) in a long strip structure is fixedly welded between the outer steel pipe (1) and the inner steel pipe (2), and the support ribs (3) are evenly distributed at equal intervals; The outer surface of the outer steel pipe (1) is provided with installation grooves (4) arranged at equal intervals, and reinforcing ribs (5) for providing pulling force for the outer steel pipe (1) are fixedly welded inside the installation grooves (4).

2. The anti-bending and pressure-resistant seamless steel pipe according to claim 1, characterized in that: The reinforcing ribs (5) are made of high-strength alloy steel, and an explosion-proof ring (6) coaxially arranged therewith is fixedly welded to the outside of the outer steel pipe (1).

3. The anti-bending and pressure-resistant seamless steel pipe according to claim 2, characterized in that: The interval between adjacent explosion-proof rings (6) is 50 cm, and the explosion-proof rings (6) are also made of high-strength alloy steel.

4. The anti-bending and pressure-resistant seamless steel pipe according to claim 1, characterized in that: A containing cavity (7) is formed between the outer steel tube (1) and the inner steel tube (2), and the inside of the containing cavity (7) is filled with a filling pad (8).

5. The anti-bending and pressure-resistant seamless steel pipe according to claim 4, characterized in that: The filling pad (8) is made of heat-insulating cotton material.

6. The anti-bending and pressure-resistant seamless steel pipe according to claim 1, characterized in that: The support rib (3) is provided with through-type weight-reducing holes (9) inside, and the weight-reducing holes (9) are evenly distributed at equal intervals.

7. The anti-bending and pressure-resistant seamless steel pipe according to claim 1, characterized in that: The outer surface of the outer steel pipe (1) is sprayed with an anti-corrosion coating (10), and the anti-corrosion coating (10) is made of polyurethane.

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