Stainless steel pipe with head-to-tail connection structure

Abstract

A stainless steel pipe with head-to-tail connection structure, comprising a pipe body and a connecting part arranged at both ends of the pipe body (1), the connecting part is arranged in the inner cavity of the pipe body, the connecting part comprises a mounting seat, the mounting seat is circular and embedded in the inner part of the pipe body, a threaded hole is arranged at the center position of the left connecting part, and a stud is arranged on the right connecting part, the stud and the threaded hole can be connected with each other, the damaged pipe section can be replaced alone, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of stainless steel pipe connection components, specifically relating to a stainless steel pipe with a head-to-tail connection structure. Background Technology

[0002] Traditional stainless steel pipe connections typically employ flanges, welding, or clamps. These methods suffer from low installation efficiency, high skill requirements, inconvenient disassembly, and insufficient sealing reliability. Especially in applications requiring rapid assembly or frequent disassembly, such as modular equipment, temporary piping systems, or industrial pipelines requiring frequent maintenance, existing technologies often prove cumbersome and time-consuming. Furthermore, the protruding structures of external connections can negatively impact the overall aesthetics and spatial layout of the pipeline. Therefore, there is an urgent need for a compact, easy-to-install, reliable, and aesthetically pleasing pipe connection solution. Summary of the Invention

[0003] The present invention mainly addresses the technical problems existing in the prior art by providing a stainless steel pipe with a head-to-tail connection structure.

[0004] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: a stainless steel pipe with a head-to-tail connection structure, including a pipe body and connecting parts at both ends of the pipe body, characterized in that: the connecting parts are located in the inner cavity of the pipe body, each connecting part includes a mounting seat, the mounting seat is circular and embedded in the inside of the pipe body, a threaded hole is provided at the center of the connecting part on the left side, and a stud is provided on the connecting part on the right side, the stud and the threaded hole can be connected to each other.

[0005] Preferably, both ends of the tube are provided with two extrusion limiting grooves, each of which includes multiple extrusion grooves arranged in a ring array, and the mounting base is installed between the two extrusion limiting grooves.

[0006] Preferably, the extrusion limiting groove on the outside is located at the opening of the tube body.

[0007] Preferably, the multiple extrusion grooves in the extrusion limiting groove are straight grooves arranged perpendicular to the axis, and the periphery of the extrusion grooves and the outer surface of the tube body are smoothly transitioned by arcs.

[0008] Preferably, the stud groove is located on the outside of the tube body on the right-side connecting part.

[0009] The beneficial effects of this utility model are:

[0010] 1. Quick assembly and disassembly, doubling efficiency: The built-in threads allow for direct plug-in and screw-in, eliminating the need for tools or welding, allowing a single person to quickly complete the connection and disassembly.

[0011] 2. Reliable connection and higher strength: The extrusion limiting groove firmly embeds the connection part into the pipe wall, and the metal thread pair provides high tensile and torsional strength, resulting in strong overall integrity.

[0012] 3. Excellent sealing and smooth outer wall: The end face seal is reliable, and all connection structures are hidden inside the pipe. The outer wall of the pipe is smooth, which facilitates pipe laying and results in a neat appearance.

[0013] 4. Optimized structure and longer service life: The extrusion groove adopts a smooth arc transition design to eliminate stress concentration and greatly improve the fatigue resistance and pressure resistance at the nozzle.

[0014] 5. Standardization and convenient maintenance: Suitable for mass production, damaged pipe sections can be replaced individually, reducing maintenance costs. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the structure of the left connecting part of this utility model.

[0017] In the figure: 1. Pipe body; 2. Connecting part; 21. Mounting base; 22. Internal threaded hole; 23. External stud; 3. Extrusion limiting groove; 31. Extrusion groove. Detailed Implementation

[0018] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0019] Example: A stainless steel pipe with an end-to-end connection structure, such as Figures 1-2 As shown,

[0020] The principle of this utility model is as follows: The main body of the stainless steel pipe is a standard-sized pipe body 1. At both ends of the inner cavity of the pipe body 1, a connecting part 2 is embedded by a precision extrusion process. The core of the connecting part 2 is a circular mounting seat 21, which can be made of high-strength stainless steel or a surface-treated alloy to ensure connection strength and corrosion resistance.

[0021] The left end (taking the direction shown in the figure as an example) of the connecting part 2 has an internal threaded hole 22 machined in the center of its mounting base 21. The right end of the connecting part 2 has a concentric external stud 23 fixed on its mounting base 21, and the thread specification of the external stud 23 is perfectly matched with the internal threaded hole 22.

[0022] To ensure a secure fit of the mounting base 21, two extrusion limiting grooves 3 are pre-machined on the inner wall areas at both ends of the tube body 1 (see...). Figure 1 , Figure 2During processing, a special mold is used to radially compress the outer wall of the tube 1 at the position corresponding to the extrusion limiting groove 3. Each extrusion limiting groove 3 consists of multiple (e.g., 6-8) straight grooves 31 evenly arranged along the circumference. Under the strong extrusion action, the material of the tube 1 undergoes plastic flow inward at the straight grooves 31, forming a "bulge" protruding into the tube cavity. Ultimately, the two extrusion limiting grooves 3 respectively form two concentric annular inner convex ridges. The mounting seat 21 is precisely placed between these two inner convex ridges, thus being firmly locked and unable to move axially.

[0023] In particular, the extrusion limiting groove 3 near the pipe opening is located directly on the edge of the end face of the pipe body 1. The internal protruding ridge formed by its extrusion also strengthens the pipe opening. It is a straight groove perpendicular to the axis, and the junction between the groove and the outer surface of the pipe body 1 is a smooth arc transition (R-angle transition) without any sharp corners, which greatly improves the stress state at this point.

[0024] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A stainless steel pipe with a head-to-tail connection structure, comprising a pipe body (1) and connecting portions (2) disposed at both ends of the pipe body (1), characterized in that: The connecting part (2) is located in the inner cavity of the tube body (1). Each connecting part (2) includes a mounting seat (21). The mounting seat (21) is circular and is embedded in the inside of the tube body (1). A threaded hole is provided at the center of the connecting part (2) on the left side, and a stud is provided on the connecting part (2) on the right side. The stud and the threaded hole can be connected to each other.

2. A stainless steel pipe with an end-to-end connection structure according to claim 1, characterized in that: The tube body (1) is provided with two extrusion limiting grooves (3) at both ends. Each extrusion limiting groove (3) includes multiple extrusion grooves (31) arranged in a ring array. The mounting base (21) is installed between the two extrusion limiting grooves (3).

3. A stainless steel pipe with an end-to-end connection structure according to claim 2, characterized in that: The extrusion limiting groove (3) located on the outside is located at the opening of the tube body (1).

4. A stainless steel pipe with an end-to-end connection structure according to claim 2, characterized in that: The multiple extrusion grooves (31) in the extrusion limiting groove (3) are straight grooves arranged perpendicular to the axis, and the periphery of the extrusion groove (31) and the outer surface of the tube body (1) are smoothly transitioned by arc.

5. A stainless steel pipe with an end-to-end connection structure according to claim 1, characterized in that: The stud groove tube (1) is located on the outside of the connecting part (2) on the right side.

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