Corrosion-resistant high-strength seamless steel tube

Abstract

The utility model discloses a corrosion-resistant high-strength seamless steel tube, which relates to the technical field of seamless steel tubes, and comprises a seamless steel tube body, connecting seats and protective tiles, the connecting seats are annularly distributed on the outer side of the seamless steel tube body at equal intervals, and the protective tiles are annularly distributed on the outer side of the seamless steel tube body at equal intervals; the protection tile comprises a protection piece located on the outer side of the seamless steel pipe body, the side, close to the seamless steel pipe body, of the protection piece is fixedly connected with an extension plate distributed along the side, and a fixing sleeve is arranged in the middle of the protection piece. According to the corrosion-resistant high-strength seamless steel pipe, the protection tiles are integrally installed on the outer side of the seamless steel pipe body, so that the multiple protection pieces form a complete corrugated pipe structure, and when the corrugated pipe is subjected to external pressure or impact, due to the fact that stress can be evenly dispersed through the corrugation shape, the corrugated pipe can bear high internal and external pressure; the impact resistance of the whole protection tile is improved, and the protection capability of the protection tile to the seamless steel pipe body is improved.

Description

Technical Field

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

[0002] Seamless steel pipe refers to a steel pipe without welds, usually made by hot rolling or cold drawing. Since there are no welds inside and outside, it has higher strength and pressure resistance and is widely used in industries such as petroleum, natural gas, chemical industry, and machinery manufacturing.

[0003] After the existing seamless steel pipes are put into use, their special production process makes the seamless steel pipes have higher strength and pressure resistance. Therefore, seamless steel pipes are generally used for fluid transportation under high-pressure environments. External forces can easily cause structural changes in seamless steel pipes, affecting the strength and pressure resistance of seamless steel pipes.

[0004] In order to overcome the above-mentioned defects, the prior art (Announcement No.: CN212319016U, Chinese patent with application date of 2020-04-30) discloses a high-strength seamless steel pipe, including a seamless steel pipe body, on which six arc-shaped grooves extending axially along the seamless steel pipe body are arrayed, each groove is formed by bending the wall of the seamless steel pipe body, each groove forms an insertion groove, and each groove protrudes toward the inside of the seamless steel pipe body to form a regular guide portion, and every two adjacent seamless steel pipes The guide parts of the main body are arranged in an interlaced manner, and a round rod is inserted into each groove. One side of the round rod protrudes from the outer wall of the seamless steel pipe main body. A plurality of limiting grooves are also arranged at equal distances on the side of the round rod protruding from the outer wall of the seamless steel pipe main body. A plurality of strapping belts are fixed on each discontinuous ring body composed of corresponding limiting grooves to position the axial direction of the round rod. The outer side of the seamless steel pipe main body is also covered with a sleeve, and the sleeve is composited with the outer wall of the seamless steel pipe main body, the strapping belt and the round rod. The utility model has high strength and strong impact resistance.

[0005] Although the existing technology can improve the strength and impact resistance of seamless steel pipes, the irregular structure formed inside the seamless steel pipe limits the material transportation capacity of the seamless steel pipe, and there is no structure to protect the outside of the seamless steel pipe, which easily causes the seamless steel pipe to be damaged by impact from the outside. Utility Model Content

[0006] The utility model aims to provide a corrosion-resistant high-strength seamless steel pipe to solve the problem that the seamless steel pipe in the background technology has no structure to protect its outer side, which easily leads to damage of the seamless steel pipe caused by impact from the outer side.

[0007] To achieve the above object, the utility model provides the following technical solution: a corrosion-resistant high-strength seamless steel pipe, comprising a seamless steel pipe body, a connecting seat and a protective tile, wherein the connecting seat is annularly equidistantly distributed on the outside of the seamless steel pipe body, and the protective tile is annularly equidistantly distributed on the outside of the seamless steel pipe body;

[0008] The protective tile includes a protective sheet located outside the seamless steel pipe body, and the protective sheet is fixedly connected to an extension plate distributed along the side of the seamless steel pipe body, a fixing sleeve is arranged in the middle of the protective sheet, and screws are slidably connected inside the fixing sleeve.

[0009] Preferably, the protective tiles are tightly connected to each other, and the extension plates between every two adjacent protective sheets are fitted together, the protective sheets are arranged as a wavy structure, and the annularly distributed protective sheets form a complete tubular structure, and the tubular structure is a corrugated tube structure.

[0010] Preferably, the interior of the connection seat is configured as a hollow structure, and a thread is provided inside the connection seat, and the interior of the connection seat is threadedly connected to the screw.

[0011] Preferably, a sealing layer is fixedly connected to the outer side of the seamless steel pipe body, and the sealing layer is provided with openings distributed equidistantly in a ring shape, and the interior of each opening is aligned with the connecting seat.

[0012] Preferably, a coating is provided between the outer side of the seamless steel pipe body and the sealing layer, and the coating is a phosphate coating formed on the surface of the seamless steel pipe body by a phosphorus saponification process.

[0013] Preferably, the connecting seat is fixedly connected with horizontal rods on both sides along both ends of the seamless steel pipe body, and the horizontal rods are distributed parallel to the outer side of the seamless steel pipe body.

[0014] Preferably, the horizontal rods are distributed equidistantly in a circular shape on the outside of the seamless steel pipe body, and the outside of the horizontal rods are fixedly connected with equidistantly distributed fixing rings, the horizontal rods and the fixing rings form a cage structure with each other, and the sealing layer is located between the cage structure formed by the horizontal rods and the fixing rings and the outside of the seamless steel pipe body.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The corrosion-resistant high-strength seamless steel pipe has a protective tile installed on the outside of the seamless steel pipe body, so that multiple protective tiles form a complete bellows structure. When the bellows is subjected to external pressure or impact, the stress can be evenly dispersed due to the shape of the corrugations, so that it can withstand higher internal and external pressures, thereby increasing the overall impact resistance of the protective tile and improving the protective ability of the protective tile to the seamless steel pipe body.

[0017] Furthermore, the bellows structure formed by the multiple protective tiles completely wraps the seamless steel pipe body. Since the corrugated structure of the bellows can play a vibration reduction role, the vibration and noise caused by the flow of fluid inside the seamless steel pipe body can be effectively reduced;

[0018] Furthermore, each protective tile is fixed to the outer side of the seamless steel pipe body by the mutual connection between the screw in the middle of the protective sheet and the connecting seat, so that by removing the screw from the inside of the connecting seat, the single protective sheet can be disassembled, thereby facilitating the maintenance of the protective tile;

[0019] Furthermore, a phosphate coating formed on its surface through a phosphate saponification process is provided on the outside of the seamless steel pipe body, and the coating surface is protected by a sealing layer to prevent the coating from being damaged. The phosphate coating can effectively prevent oxidation and corrosion of the metal substrate of the seamless steel pipe body and extend the service life of the seamless steel pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the connecting seat of the utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the protective sheet of the utility model;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the seamless steel pipe body of the utility model;

[0024] Figure 5 For this utility model Figure 4 The enlarged structural diagram at A in the middle;

[0025] Figure 6 This is a schematic diagram of the horizontal rod structure of the utility model.

[0026] In the figure: 1. seamless steel pipe body; 2. connecting seat; 3. protective tile; 31. protective sheet; 32. extension plate; 33. fixing sleeve; 34. screw; 4. sealing layer; 5. horizontal rod; 6. fixing ring. DETAILED DESCRIPTION

[0027] 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.

[0028] Embodiment 1:

[0029] See also Figure 1 - Figure 6 , the utility model provides the following technical solutions:

[0030] A corrosion-resistant high-strength seamless steel pipe, comprising a seamless steel pipe body 1, a connection seat 2 and a protective tile 3, wherein the connection seat 2 is equidistantly distributed in an annular shape on the outer side of the seamless steel pipe body 1, and the protective tile 3 is equidistantly distributed in an annular shape on the outer side of the seamless steel pipe body 1;

[0031] The protective tile 3 includes a protective sheet 31 located on the outside of the seamless steel pipe body 1, and the protective sheet 31 is fixedly connected to an extension plate 32 distributed along the side thereof near the side of the seamless steel pipe body 1, a fixing sleeve 33 is arranged in the middle of the protective sheet 31, and a screw 34 is slidably connected inside the fixing sleeve 33.

[0032] The protective tiles 3 are tightly connected to each other, and the extension plates 32 between every two adjacent protective sheets 31 are fitted together. The protective sheets 31 are arranged as a wavy structure, and the annularly distributed protective sheets 31 form a complete tubular structure, and the tubular structure is a corrugated tube structure.

[0033] The interior of the connection base 2 is configured as a hollow structure, and a thread is provided inside the connection base 2 , and the interior of the connection base 2 is threadedly connected to the screw 34 .

[0034] A sealing layer 4 is fixedly connected to the outer side of the seamless steel pipe body 1 , and the sealing layer 4 is provided with openings equidistantly distributed in a ring shape, and the inside of each opening is aligned with the connecting seat 2 .

[0035] A coating is arranged between the outer side of the seamless steel pipe body 1 and the sealing layer 4, and the coating is a phosphate coating formed on the surface of the seamless steel pipe body 1 by a phosphorus saponification process.

[0036] The connecting seat 2 is fixedly connected with horizontal rods 5 on both sides along the two ends of the seamless steel pipe body 1, and the horizontal rods 5 are distributed parallel to the outer side of the seamless steel pipe body 1.

[0037] The horizontal rods 5 are equidistantly distributed in a circular shape on the outside of the seamless steel pipe body 1, and the outside of the horizontal rods 5 are fixedly connected with equidistantly distributed fixing rings 6, the horizontal rods 5 and the fixing rings 6 form a cage structure with each other, and the sealing layer 4 is located between the cage structure formed by the horizontal rods 5 and the fixing rings 6 and the outside of the seamless steel pipe body 1.

[0038] Embodiment 2:

[0039] Based on the first embodiment, the specific working principle is as follows:

[0040] The corrosion-resistant high-strength seamless steel pipe, when the seamless steel pipe body 1 is subjected to external impact, the protective tile 3 will prevent the impact object from directly contacting the seamless steel pipe body 1, protecting the seamless steel pipe body 1 from the impact of the external impact, multiple protective tiles 3 are distributed on the outside of the seamless steel pipe body 1 in an annular structure, and each protective sheet 31 is connected to the connecting seat 2 through the screw 34 inside the fixing sleeve 33, and the protective tile 3 is installed on the outside of the seamless steel pipe body 1 as a whole, so that the multiple protective sheets 31 form a complete bellows structure. When the bellows is subjected to external pressure or impact, the shape of the corrugations can evenly disperse the stress, so that it can withstand higher internal and external pressures, thereby increasing the overall impact resistance of the protective tile 3 and improving the protective ability of the protective tile 3 to the seamless steel pipe body 1;

[0041] The bellows structure formed by the multiple protective tiles 3 completely wraps the seamless steel pipe body 1. Since the corrugated structure of the bellows can play a vibration reduction role, the vibration and noise caused by the flow of fluid inside the seamless steel pipe body 1 can be effectively reduced;

[0042] Each protective tile 3 is fixed to the outer side of the seamless steel pipe body 1 by the mutual connection between the screw 34 in the middle of the protective sheet 31 and the connecting seat 2. Therefore, by removing the screw 34 from the inside of the connecting seat 2, the single protective sheet 31 can be disassembled, thereby facilitating the maintenance of the protective tile 3.

[0043] The outer side of the seamless steel pipe body 1 is provided with a phosphate coating formed on its surface through a phosphate saponification process, and the coating surface is protected by a sealing layer 4 to prevent the coating from being damaged. The phosphate coating can effectively prevent oxidation and corrosion of the metal substrate of the seamless steel pipe body 1 and extend the service life of the seamless steel pipe body 1.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A corrosion-resistant high-strength seamless steel pipe, comprising a seamless steel pipe body (1), a connection seat (2) and a protective tile (3), wherein the connection seat (2) is distributed in an annular shape and is equidistantly disposed on the outside of the seamless steel pipe body (1), and the protective tile (3) is distributed in an annular shape and is equidistantly disposed on the outside of the seamless steel pipe body (1); Features: The protective tile (3) includes a protective sheet (31) located outside the seamless steel pipe body (1), and the protective sheet (31) is fixedly connected to an extension plate (32) distributed along the side of the seamless steel pipe body (1), close to the side of the seamless steel pipe body (1), and a fixing sleeve (33) is arranged in the middle of the protective sheet (31), and a screw (34) is slidably connected inside the fixing sleeve (33).

2. The corrosion-resistant high-strength seamless steel pipe according to claim 1, characterized in that: The protective tiles (3) are tightly connected to each other, and the extension plates (32) between every two adjacent protective sheets (31) are in contact with each other. The protective sheets (31) are arranged in a wavy structure, and the protective sheets (31) distributed in an annular shape form a complete tubular structure, and the tubular structure is a corrugated tube structure.

3. The corrosion-resistant high-strength seamless steel pipe according to claim 1, characterized in that: The interior of the connection seat (2) is configured as a hollow structure, the interior of the connection seat (2) is provided with threads, and the interior of the connection seat (2) is threadedly connected to the screw (34).

4. The corrosion-resistant high-strength seamless steel pipe according to claim 1, characterized in that: A sealing layer (4) is fixedly connected to the outer side of the seamless steel pipe body (1), and the sealing layer (4) is provided with openings distributed in an annular shape and at equal intervals, and the interior of each opening is aligned with the connecting seat (2).

5. The corrosion-resistant high-strength seamless steel pipe according to claim 4, characterized in that: A coating is provided between the outer side of the seamless steel pipe body (1) and the sealing layer (4), and the coating is a phosphate coating formed on the surface of the seamless steel pipe body (1) by a phosphorus saponification process.

6. The corrosion-resistant high-strength seamless steel pipe according to claim 5, characterized in that: The connection seat (2) is fixedly connected with horizontal rods (5) on both sides along the two ends of the seamless steel pipe body (1), and the horizontal rods (5) are distributed parallel to the outer side of the seamless steel pipe body (1).

7. The corrosion-resistant high-strength seamless steel pipe according to claim 6, characterized in that: The horizontal rods (5) are evenly distributed in a circular shape on the outside of the seamless steel pipe body (1), and the outside of the horizontal rods (5) is fixedly connected with evenly distributed fixing rings (6), the horizontal rods (5) and the fixing rings (6) form a cage-shaped structure with each other, and the sealing layer (4) is located between the cage-shaped structure formed by the horizontal rods (5) and the fixing rings (6) and the outside of the seamless steel pipe body (1).

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