Seamless steel tube easy to butt joint

Abstract

The seamless steel pipe comprises a first steel pipe body and a second steel pipe body, outlets are formed in the two ends of the first steel pipe body and the two ends of the second steel pipe body respectively, semi-arc-shaped pipelines are turned at the outlets, and the semi-arc-shaped pipelines are communicated with the interiors of the first steel pipe body and the second steel pipe body. A baffle plate is arranged at an outlet of the steel pipe body above the semi-arc pipeline; an opening is formed in the top of the semi-arc pipeline; a butt-joint platform is arranged at an opening in the top of the semi-arc pipeline, and a V-shaped groove is formed in the butt-joint platform in a surrounding mode; a limiting hole is formed in the butt joint platform located on the first steel pipe body, a limiting rod is arranged on the butt joint platform located on the second steel pipe body, and the limiting rod is matched with the limiting hole in an inserted mode. External threads are arranged on the outer vertical faces of the two ends of the first steel pipe body and the second steel pipe body and the outer vertical face of the semi-arc pipeline. The two ends of the first steel pipe body are rotationally connected with sealing steel sleeves. The pipe body butt joint is rapid, leakage is not prone to occurring, and axial displacement is not prone to occurring.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe manufacturing and installation, and in particular to a seamless steel pipe that is easy to connect. Background Technology

[0002] Seamless steel pipes, as an important piping material, are widely used in various industrial fields. In the connection process of seamless steel pipes, butt welding is a crucial step. Good butt welding technology can ensure the safety and stability of the pipeline system, improve production efficiency, and reduce maintenance costs. Currently, there are three main methods for butt welding gas pipelines: welding, threaded connection, and flange connection. These methods all require considerable installation space and fasteners, resulting in higher costs. Some methods use sleeve threaded connections, where the ends are perpendicularly butt-to-end, which is prone to misalignment during butt welding, leading to low welding efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a seamless steel pipe that is easy to connect and is not easily loosened.

[0004] The purpose of this utility model is achieved as follows: a seamless steel pipe that is easy to connect includes a first steel pipe body and a second steel pipe body. Both ends of the first and second steel pipe bodies have outlets. A semi-circular arc-shaped pipe is machined at each outlet, and the semi-circular arc-shaped pipe is internally connected to the first and second steel pipe bodies. A baffle is provided at the outlet of the steel pipe body above the semi-circular arc-shaped pipe. The end of the semi-circular arc-shaped pipe is sealed, and an opening is provided at the top. A docking platform is provided at the top opening of the semi-circular arc-shaped pipe, and a V-shaped groove is arranged around the docking platform. A limiting hole is provided on the docking platform of the first steel pipe body, and a limiting rod is provided on the docking platform of the second steel pipe body. The limiting rod is inserted into the limiting hole. External threads are provided on the outer surfaces of both ends of the first and second steel pipe bodies and on the outer surface of the semi-circular arc-shaped pipe. Sealing steel sleeves are rotatably connected to both ends of the first steel pipe body.

[0005] Preferably, the V-shaped groove is provided with a sealing ring with a diamond-shaped cross-section, and the sealing ring is pressed by the docking platform of the first steel pipe body and the second steel pipe body.

[0006] Preferably, the semi-circular arc-shaped pipes at both ends of the first and second steel pipe bodies are of the same size, and after the semi-circular arc-shaped pipes at both ends of the first and second steel pipe bodies are matched, a continuous external thread is formed on the outer facade.

[0007] Preferably, the length of the sealing steel sleeve is greater than the length of the semi-circular arc pipe, and O-rings are provided at the inner walls of the openings at both ends of the sealing cylinder sleeve.

[0008] Preferably, the limiting hole and the limiting rod are located inside the V-shaped groove, the limiting hole is provided with an internal thread, and the diameter of the limiting rod is smaller than the diameter of the limiting hole.

[0009] Compared with the prior art, the advantages of this utility model are:

[0010] 1. The traditional direct connection between pipe ports is changed to a horizontal connection, and a limiting rod and limiting hole are used to prevent axial movement between the two sets of pipes, thus improving the stability of the connection.

[0011] 2. The two sets of pipes are connected by a sealed steel sleeve, avoiding the use of bolts and making the connection faster. At the same time, the cylinder sleeve can achieve compression between the two sets of semi-circular arc pipes, improving the sealing performance. Furthermore, O-rings are set on the inner wall of the openings at both ends of the cylinder sleeve to further prevent the entry of external rainwater and dust. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle.

[0014] Figure 3 This is a cross-sectional view of the two sets of semi-circular arc-shaped pipes of this utility model after being connected.

[0015] Figure 4 This is a schematic diagram of the structure of the sealing steel sleeve of this utility model.

[0016] Among them, 1 is the first steel pipe body, 101 is the limiting hole, 2 is the second steel pipe body, 201 is the limiting rod, 3 is the semi-circular arc pipe, 4 is the baffle, 5 is the opening, 6 is the docking platform, 601 is the V-groove, 7 is the sealing steel sleeve, 8 is the sealing ring, and 9 is the O-ring. Detailed Implementation

[0017] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0018] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] like Figure 1-4 As shown, an easily connected seamless steel pipe includes a first steel pipe body 1 and a second steel pipe body 2. Both ends of the first steel pipe body 1 and the second steel pipe body 2 have outlets. A semi-circular arc-shaped pipe 3 is machined at the outlet, and the semi-circular arc-shaped pipe 3 is internally connected to the first steel pipe body 1 and the second steel pipe body 2. A baffle 4 is provided at the outlet of the steel pipe body above the semi-circular arc-shaped pipe 3. The end of the semi-circular arc-shaped pipe 3 is sealed, and the top has an opening 5. A docking platform 6 is provided at the top opening of the semi-circular arc-shaped pipe 3, and a V-shaped groove 601 is arranged around the docking platform 6. A limiting hole 101 is provided on the docking platform 6 located on the first steel pipe body 1, and a limiting rod 201 is provided on the docking platform located on the second steel pipe body 2. The limiting rod 201 is inserted and engaged with the limiting hole 101. External threads are provided on the outer surfaces of both ends of the first steel pipe body 1 and the second steel pipe body 2, as well as on the outer surface of the semi-circular arc-shaped pipe 3. Sealing steel sleeves 7 are rotatably connected to both ends of the first steel pipe body 1.

[0021] like Figure 1-3As shown, a diamond-shaped sealing ring 8 is provided in the V-shaped groove 601. The sealing ring 8 is pressed by the docking platform of the first steel pipe body 1 and the second steel pipe body 2. The size of the diamond-shaped sealing ring is slightly larger than the size of the combined V-shaped groove. The diamond-shaped sealing ring 8 and the V-shaped groove 601 will deform when pressed by the docking platform, which can effectively improve the sealing between the docking platforms.

[0022] like Figure 1 As shown, the semi-circular arc pipes at both ends of the first steel pipe body 1 and the second steel pipe body 2 are the same size, and after the semi-circular arc pipes 3 at both ends of the first steel pipe body 1 and the second steel pipe body 2 are matched, a continuous external thread is formed on the outer side. The two sets of semi-circular arc pipes can be quickly connected by rotating the sealing steel sleeve.

[0023] like Figure 4 As shown, the length of the sealing steel sleeve 7 is greater than the length of the semi-circular pipe 3. O-rings 9 are provided at the inner walls of the openings at both ends of the sealing cylinder sleeve 7. By setting O-rings, the sealing between pipes can be strengthened, and external rainwater and dust can be prevented from entering the interior.

[0024] like Figure 1-2 As shown, the limiting hole 101 and the limiting rod 501 are located inside the V-shaped groove 601. The docking platform inside the V-shaped groove is relatively deep, which facilitates the setting of the limiting hole and increases the depth of the limiting hole. The limiting hole is provided with an internal thread. The diameter of the limiting rod is smaller than the diameter of the limiting hole. The limiting rod and the limiting hole are inserted and docked. The tube body at the end is connected to the limiting hole by bolts through a sealing plate. An extended docking round tube air outlet can be provided on the sealing plate.

[0025] The working principle of this utility model is explained as follows: This utility model is mainly used for gas transmission. When docking, first insert the limiting rod and limiting hole of the docking platform of the two sets of steel pipes into the docking platform, and then rotate the sleeve until it covers the junction line of the semi-circular arc pipe after docking.

[0026] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A seamless steel pipe that is easy to connect, characterized in that, The system includes a first steel pipe body and a second steel pipe body. Both ends of the first and second steel pipe bodies have outlets. A semi-circular arc-shaped pipe is machined at each outlet, and this semi-circular arc-shaped pipe is internally connected to the first and second steel pipe bodies. A baffle is provided at the outlet of the steel pipe body above the semi-circular arc-shaped pipe. The end of the semi-circular arc-shaped pipe is sealed, and an opening is provided at the top. A docking platform is provided at the top opening of the semi-circular arc-shaped pipe, and a V-shaped groove is arranged around the docking platform. A limiting hole is provided on the docking platform of the first steel pipe body, and a limiting rod is provided on the docking platform of the second steel pipe body. The limiting rod is inserted into the limiting hole. External threads are provided on the outer surfaces of both ends of the first and second steel pipe bodies and on the outer surface of the semi-circular arc-shaped pipe. Sealing steel sleeves are rotatably connected to both ends of the first steel pipe body.

2. The seamless steel pipe for easy connection according to claim 1, characterized in that, The V-shaped groove is provided with a sealing ring with a diamond-shaped cross section, and the sealing ring is pressed by the docking platform of the first steel pipe body and the second steel pipe body.

3. The seamless steel pipe for easy connection according to claim 1, characterized in that, The semi-circular arc-shaped pipes at both ends of the first and second steel pipe bodies are the same size, and after the semi-circular arc-shaped pipes at both ends of the first and second steel pipe bodies are matched, a continuous external thread is formed on the outer facade.

4. The seamless steel pipe for easy connection according to claim 1, characterized in that, The length of the sealing steel sleeve is greater than the length of the semi-circular arc pipe, and O-rings are provided at the inner walls of the openings at both ends of the sealing steel sleeve.

5. A seamless steel pipe for easy connection according to claim 1, characterized in that, The limiting hole and the limiting rod are located inside the V-shaped groove. The limiting hole is provided with an internal thread, and the diameter of the limiting rod is smaller than the diameter of the limiting hole.

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