Seamless steel tube capable of preventing corrosion at joint

Abstract

The utility model relates to the technical field of seamless steel tubes, in particular to a seamless steel tube with an anti-corrosion joint, which comprises two seamless steel tube bodies, a connecting tube is arranged between the two seamless steel tube bodies, and a plurality of connecting bolts are mounted on the two seamless steel tube bodies. The seamless steel pipe is provided with a protection mechanism used for protecting the connecting position of the seamless steel pipe, the protection mechanism comprises two shielding covers, the shielding covers are connected to the seamless steel pipe body in a sliding mode, a plurality of limiting blocks are fixedly connected to the connecting pipe, and two limiting claws are rotationally connected to the limiting blocks. Through cooperation of the seamless steel pipe bodies, the connecting pipes and the connecting bolts, a long pipeline can be conveniently formed to complete the transportation purpose, mutual connection positions of the seamless steel pipe bodies can be conveniently protected through the protection mechanism, the situations such as leakage caused by corrosion due to the fact that the connection positions are exposed in the external environment are avoided, and practicability is high.

Description

Technical Field

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

[0002] Seamless steel pipe is made by perforating a whole round steel and has no welds on the surface. It is called seamless steel pipe. Seamless steel pipe is mainly used as petroleum geological drilling pipe, cracking pipe for petrochemical industry, boiler pipe, bearing pipe and high-precision structural steel pipe for automobile, tractor and aviation. Seamless steel pipe usually requires multiple sections of seamless steel pipe to be connected to each other when in use. The existing seamless steel pipe joints are usually connected with flanges and bolts. In order to improve the sealing effect of the connection, sealing pads are added at the joints. However, the sealing pads are exposed to the external environment, the rubber is prone to rapid aging, and the sealing of the seamless steel pipe joints will deteriorate, resulting in pipeline leakage. In view of the above problems, the present application designs a seamless steel pipe with corrosion-resistant joints. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies of the prior art, the utility model provides a seamless steel pipe with corrosion-resistant joints.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a seamless steel pipe with anti-corrosion at the joint, comprising two seamless steel pipe bodies, a connecting pipe is arranged between the two seamless steel pipe bodies, a plurality of connecting bolts are installed on the two seamless steel pipe bodies, a protective mechanism for protecting the seamless steel pipe joint is arranged on the seamless steel pipe, the protective mechanism comprises two covering covers, the covering covers are slidably connected to the seamless steel pipe bodies, a plurality of limit blocks are fixedly connected to the connecting pipe, and two limit claws are rotatably connected to the limit blocks.

[0007] In order to avoid longitudinal displacement of the covering cover, the utility model is improved in that two fixing hooks are fixedly connected to the connecting pipe, and two notches matching with the fixing hooks are arranged on the covering cover.

[0008] In order to improve the sealing performance of the connection of the seamless steel pipe body, the utility model is improved in that a sealing rubber ring is fixedly connected to the seamless steel pipe body.

[0009] In order to improve the connection strength between the limit block and the connecting pipe, the utility model is improved in that the limit block is welded on the connecting pipe.

[0010] In order to prevent the liquid in the seamless steel pipe from directly contacting the connecting pipe and causing corrosion, the utility model has an improvement in that an isolation coating is provided in the connecting pipe.

[0011] In order to prevent the shielding cover from being worn due to long-term friction on the surface of the seamless steel pipe, the utility model is improved in that a protective coating is provided on the surface of the seamless steel pipe and the shielding cover.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a seamless steel pipe with corrosion resistance at the joints, which has the following beneficial effects:

[0014] The seamless steel pipe with corrosion-resistant joints, through the cooperation of the seamless steel pipe body, the connecting pipe and the connecting bolts, is convenient for forming a longer pipeline to achieve the purpose of transportation. The protective mechanism is convenient for protecting the joints between the seamless steel pipe bodies to avoid exposure of the joints to the external environment, which may cause corrosion and leakage, and the practicality is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the first main structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the first partial structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the second partial structure of the utility model.

[0018] In the figure: 1. seamless steel pipe body; 2. connecting pipe; 3. connecting bolt; 4. covering cover; 5. limiting block; 6. limiting claw; 7. fixing hook; 8. sealing rubber ring. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-Figure 3 A seamless steel pipe with corrosion-resistant joints comprises two seamless steel pipe bodies 1, a connecting pipe 2 is arranged between the two seamless steel pipe bodies 1, a plurality of connecting bolts 3 are installed on the two seamless steel pipe bodies 1, a protective mechanism for protecting the seamless steel pipe joints is arranged on the seamless steel pipes, the protective mechanism comprises two covering covers 4, the covering covers 4 are slidably connected to the seamless steel pipe bodies 1, a plurality of limit blocks 5 are fixedly connected to the connecting pipe 2, and two limit claws 6 are rotatably connected to the limit blocks 5.

[0021] When the device is used, after placing the connecting pipe 2 between the two seamless steel pipe bodies 1, fix them with the connecting bolts 3, slide the covering cover 4 to push the covering covers 4 on the two seamless steel pipe bodies 1 to the middle and align them, rotate the limiting claw 6 on the limiting block 5, so that the limiting claw 6 is hooked on the covering cover 4;

[0022] When using the device, it was found that after the limiting claw 6 hooked the cover 4, the cover 4 was subjected to force to cause longitudinal displacement and misalignment, and the cover 4 was easily damaged. In order to avoid the above problem, in this embodiment, two fixing hooks 7 were fixedly connected to the connecting pipe 2, and two notches matching the fixing hooks 7 were provided on the cover 4.

[0023] When the device is in use, it is found that the connection between the seamless steel pipe body 1 and the connecting pipe 2 is prone to leakage. In order to improve the sealing performance, in this embodiment, a sealing rubber ring 8 is fixedly connected to the seamless steel pipe body 1.

[0024] When using the device, it is found that the limit block 5 needs to support the limit claw 6 to hook the cover 4. In order to improve the connection strength between the limit block 5 and the connecting pipe 2, in this embodiment, the limit block 5 is welded to the connecting pipe 2.

[0025] When the device is in use, it is found that when the liquid in the seamless steel pipe body 1 flows through the connecting pipe 2, the liquid directly contacts the connecting pipe 2 and easily causes corrosion. In order to avoid the above problem, in this embodiment, an isolation coating is provided in the connecting pipe 2.

[0026] When using the device, it is found that the seamless steel pipe body 1 and the cover 4 are exposed to the external environment and are prone to oxidation corrosion. In order to increase the service life of the seamless steel pipe body 1 and the cover 4, in this embodiment, a protective coating is provided on the surface of the seamless steel pipe and the cover 4.

[0027] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0028] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0029] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0030] 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 seamless steel pipe with corrosion-resistant joints, comprising two seamless steel pipe bodies (1), characterized in that: A connecting pipe (2) is arranged between the two seamless steel pipe bodies (1), and a plurality of connecting bolts (3) are installed on the two seamless steel pipe bodies (1). A protective mechanism for protecting the connection of the seamless steel pipes is arranged on the seamless steel pipes, and the protective mechanism comprises two covering covers (4), and the covering covers (4) are slidably connected to the seamless steel pipe bodies (1). A plurality of limit blocks (5) are fixedly connected to the connecting pipe (2), and two limit claws (6) are rotatably connected to the limit blocks (5).

2. A seamless steel pipe with corrosion-resistant joints according to claim 1, characterized in that: The connecting pipe (2) is fixedly connected with two fixing hooks (7), and the covering cover (4) is provided with two notches matching with the fixing hooks (7).

3. A seamless steel pipe with corrosion-resistant joints according to claim 2, characterized in that: A sealing rubber ring (8) is fixedly connected to the seamless steel pipe body (1).

4. A seamless steel pipe with corrosion-resistant joints according to claim 3, characterized in that: The limiting block (5) is welded on the connecting pipe (2).

5. The seamless steel pipe with anti-corrosion joints according to claim 4, characterized in that: An isolation coating is provided inside the connecting pipe (2).

6. The seamless steel pipe with anti-corrosion joints according to claim 5, characterized in that: A protective coating is provided on the surface of the seamless steel pipe and the covering cover (4).

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