Seamless steel tube with good anti-bending effect and anti-oxidation function

Abstract

The utility model relates to the technical field of steel pipes, in particular to a seamless steel pipe which is good in anti-bending effect and has an anti-oxidation function. The seamless steel pipe comprises a seamless steel pipe body, the seamless steel pipe body comprises an outer surface protective layer, a reinforcing rib assembly is arranged on the outer side of the outer surface protective layer, the reinforcing rib assembly comprises a plurality of annular reinforcing ribs, and the annular reinforcing ribs are fixedly connected to the outer side of the outer surface protective layer and are arranged away from one another. According to the seamless steel pipe, through the multiple annular reinforcing ribs and the two threaded annular reinforcing ribs in the reinforcing rib assembly, the multiple reinforcing steel bars are clamped to the outer sides of the multiple annular reinforcing ribs and the outer sides of the two threaded annular reinforcing ribs through the two threaded fixing rings, and therefore the seamless steel pipe body can be protected; the seamless steel pipe body is prevented from being locally sunken or deformed to influence the service life of the seamless steel pipe body due to extrusion of an external heavy object or collision in the mounting process, and meanwhile, the cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel pipe technical field, concretely relates to a seamless steel pipe with good bending resistance and oxidation resistance. BACKGROUND

[0002] Seamless steel pipe is a kind of hollow section, the periphery of long strip steel without joint. It is made into pipe by solid pipe blank, then is made by hot rolling, cold rolling or cold drawing process. Compared with the seamless steel pipe with seam, the seamless steel pipe is more uniform and continuous in overall structure due to no weld, which makes it perform better in mechanical properties such as pressure bearing and bending resistance. The seamless steel pipe without reinforcing rib is prone to local indentation or deformation when subjected to external local pressure. In the pipeline transportation system, if the pipeline has no reinforcing rib, the pipe wall of the steel pipe may be locally deformed due to the inability to effectively disperse the pressure when subjected to external pressure or collision during installation. Therefore, a seamless steel pipe with good bending resistance and oxidation resistance is proposed. SUMMARY

[0003] The utility model discloses a kind of seamless steel pipes with good bending resistance and oxidation resistance, to solve the problems raised in the above background technology.

[0004] To achieve the above object, the utility model provides a kind of seamless steel pipes with good bending resistance and oxidation resistance, including seamless steel pipe body, the seamless steel pipe body includes outer surface protection layer, the outer side of the outer surface protection layer is provided with reinforcing rib assembly, the reinforcing rib assembly includes multiple annular reinforcing ribs, multiple the annular reinforcing rib is fixedly connected at the outer side of outer surface protection layer, and multiple the annular reinforcing rib is set apart from each other, the outer side of the annular reinforcing rib is fixedly installed with threaded annular reinforcing rib close to both ends, multiple the outer side of the annular reinforcing rib is provided with multiple fixed slots with the outer side of threaded annular reinforcing rib, multiple the annular reinforcing rib and the fixed slot on threaded annular reinforcing rib correspondingly are clamped with reinforcing steel bar, the outer side of the threaded annular reinforcing rib is screw-mounted with threaded fixing ring, and the threaded fixing ring rotates at the outer side of annular reinforcing rib.

[0005] As a further improvement of the technical solution, the inner side of the outer surface protection layer is fixedly connected with a base material layer, the inner wall of the base material layer is fixedly connected with an oxidation-resistant layer, the inner side of the oxidation-resistant layer is fixedly connected with a thermal insulation layer, the inner side of the thermal insulation layer is fixedly connected with a reinforcing layer, and the inner side of the reinforcing layer is fixedly connected with an inner surface protection layer.

[0006] As a further improvement of the technical solution, the thickness of the thermal insulation layer is less than the thickness of the oxidation-resistant layer, and the thickness of the reinforcing layer is 0.45 mm.

[0007] As a further improvement of the technical solution, the thickness of the heat insulation layer is greater than the thickness of the reinforcing layer, and the thickness of the heat insulation layer is 2mm.

[0008] As a further improvement of the technical solution, the outer side of the outer surface protection layer is fixedly connected with a plurality of connecting flanges near the two end positions, and the surface of the connecting flange is provided with a mounting hole.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] In the seamless steel pipe with good bending resistance and oxidation resistance, the plurality of reinforcing steel bars are clamped on the outer side of the plurality of annular reinforcing ribs and the two threaded annular reinforcing ribs through the two threaded fixing rings, so that the seamless steel pipe body can be protected, external heavy objects are prevented from extruding or being collided during installation, local depression or deformation of the seamless steel pipe body is avoided, the service life of the seamless steel pipe body is affected, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Fig. 2 It is a schematic diagram of the expanded structure of the utility model;

[0013] Fig. 3 It is a schematic diagram of the seamless steel pipe body structure of the utility model.

[0014] The meanings of the various reference numbers in the drawings are as follows:

[0015] 1, seamless steel pipe body; 11, outer surface protection layer; 12, base material layer; 13, oxidation resistance layer; 14, heat insulation layer; 15, reinforcing layer; 16, inner surface protection layer; 2, reinforcing rib assembly; 21, annular reinforcing rib; 22, threaded annular reinforcing rib; 23, reinforcing steel bar; 24, threaded fixing ring; 25, connecting flange. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0017] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and so on the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation configuration and operation, therefore can not be understood as the restriction of the utility model.

[0018] Embodiment 1

[0019] Please refer to Figs. 1-3 As shown in the figure, the embodiment provides a seamless steel pipe with good bending resistance and oxidation resistance, which comprises a seamless steel pipe body 1, the seamless steel pipe body 1 comprises an outer surface protection layer 11, the inner side of the outer surface protection layer 11 is fixedly connected with a base material layer 12, the base material layer 12 can facilitate processing and reduce production cost, increase the use strength and bending resistance of the device, the inner wall of the base material layer 12 is fixedly connected with an oxidation resistance layer 13, the oxidation resistance layer 13 can play an oxidation resistance and corrosion resistance role on the inner wall of the device, effectively prolonging the service life of the device, the inner side of the oxidation resistance layer 13 is fixedly connected with a heat insulation layer 14, the inner side of the heat insulation layer 14 is fixedly connected with a reinforcing layer 15, the reinforcing layer 15 can increase the hardness of the surface of the device, avoid damage to the surface of the device caused by bumps, the thickness of the heat insulation layer 14 is less than the thickness of the oxidation resistance layer 13, the thickness of the reinforcing layer 15 is 0.45mm, the thickness of the heat insulation layer 14 is greater than the thickness of the reinforcing layer 15, the thickness of the heat insulation layer 14 is 2mm, the heat insulation layer 14 can play a heat preservation and insulation role, avoid rapid changes in external environment temperature, and long-term thermal expansion and cold contraction reduces the mechanical properties of the device, the reinforcing layer heat insulation layer 14 is provided, which increases the compression strength of the inner wall of the device, avoids the influence of the device caused by the high pressure in the pipe, and the inner side of the reinforcing layer 15 is fixedly connected with an inner surface protection layer 16, the inner surface protection layer 16 can avoid the corrosion of the liquid in the pipe to the pipe wall.

[0020] The outer side of the outer surface protection layer 11 is provided with a reinforcing rib assembly 2, which can increase the strength of the seamless steel pipe body 1 and protect the seamless steel pipe body 1 at the same time. The reinforcing rib assembly 2 comprises a plurality of annular reinforcing ribs 21 fixedly connected to the outer side of the outer surface protection layer 11 and arranged away from each other. Threaded annular reinforcing ribs 22 are fixedly installed on the outer side of the annular reinforcing ribs 21 close to both ends. A plurality of fixing grooves are formed on the outer sides of the annular reinforcing ribs 21 and the threaded annular reinforcing ribs 22. A reinforcing steel bar 23 is clamped in the fixing grooves on the annular reinforcing ribs 21 and the threaded annular reinforcing ribs 22 in correspondence. A threaded fixing ring 24 is threadedly installed on the outer side of the threaded annular reinforcing rib 22 and rotates on the outer side of the threaded annular reinforcing rib 22. By rotating the threaded fixing ring 24, the reinforcing steel bar 23 can be removed from the annular reinforcing ribs 21 and the two threaded annular reinforcing ribs 22 for replacement. The plurality of reinforcing steel bars 23 are clamped on the outer sides of the annular reinforcing ribs 21 and the two threaded annular reinforcing ribs 22 through the two threaded fixing rings 24, thereby achieving the protection effect. The outer side of the outer surface protection layer 11 is fixedly connected to a connecting flange 25 close to both ends. A plurality of mounting holes are formed on the surface of the connecting flange 25. The mounting holes on the connecting flange 25 make the device easy to assemble and fix, thereby effectively improving the convenience of using the device.

[0021] In specific use, the seamless steel pipe with good bending resistance and oxidation resistance of the embodiment can first achieve the protection effect by clamping the plurality of reinforcing steel bars 23 on the outer sides of the annular reinforcing ribs 21 and the two threaded annular reinforcing ribs 22 through the two threaded fixing rings 24, thereby avoiding extrusion by external heavy objects or local indentation or deformation caused by collision during installation. Then, the base material layer 12 can be easily processed and reduce production costs, thereby increasing the use strength and bending resistance of the device. Next, the oxidation-resistant layer 13 can play an anti-oxidation and anti-corrosion role on the inner wall of the device, thereby effectively improving the service life of the device. Finally, the heat insulation layer 14 can play a heat preservation and insulation role, thereby avoiding rapid changes in external environmental temperature and reducing the mechanical properties of the device due to long-term thermal expansion and cold contraction. The reinforcing layer 15 can increase the hardness of the surface of the device and avoid damage to the surface of the device caused by bumps.

[0022] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A seamless steel pipe with good bending resistance and oxidation resistance, comprising a seamless steel pipe body (1), characterized in that: The seamless steel pipe body (1) comprises an outer surface protection layer (11), the outer side of the outer surface protection layer (11) is provided with a reinforcing rib assembly (2), the reinforcing rib assembly (2) comprises a plurality of annular reinforcing ribs (21), the plurality of annular reinforcing ribs (21) are fixedly connected to the outer side of the outer surface protection layer (11), and the plurality of annular reinforcing ribs (21) are arranged away from each other; a threaded annular reinforcing rib (22) is fixedly installed on the outer side of the annular reinforcing rib (21) close to both ends, a plurality of fixing grooves are formed in the outer side of the annular reinforcing rib (21) and the threaded annular reinforcing rib (22), a reinforcing steel bar (23) is clamped in the fixing grooves corresponding to the annular reinforcing rib (21) and the threaded annular reinforcing rib (22), a threaded fixing ring (24) is screw-mounted on the outer side of the threaded annular reinforcing rib (22), and the threaded fixing ring (24) rotates on the outer side of the threaded annular reinforcing rib (22).

2. The seamless steel pipe with good bending resistance and oxidation resistance according to claim 1, characterized in that: The inner side of the outer surface protection layer (11) is fixedly connected with a base material layer (12), the inner wall of the base material layer (12) is fixedly connected with an oxidation-resistant layer (13), the inner side of the oxidation-resistant layer (13) is fixedly connected with a heat insulation layer (14), the inner side of the heat insulation layer (14) is fixedly connected with a reinforcing layer (15), and the inner side of the reinforcing layer (15) is fixedly connected with an inner surface protection layer (16).

3. The seamless steel pipe with good bending resistance and oxidation resistance function according to claim 2, characterized in that: The thickness of the heat insulation layer (14) is less than the thickness of the oxidation-resistant layer (13), and the thickness of the reinforcing layer (15) is 0.45 mm.

4. The seamless steel pipe with good bending resistance and oxidation resistance function according to claim 2, characterized in that: The thickness of the heat insulation layer (14) is greater than the thickness of the reinforcing layer (15), and the thickness of the heat insulation layer (14) is 2 mm.

5. The seamless steel pipe with good bending resistance and oxidation resistance according to claim 1, characterized in that: The outer side of the outer surface protection layer (11) is fixedly connected with a plurality of connecting flanges (25) close to both ends, and mounting holes are formed in the surface of the connecting flanges (25).

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