Multi-specification variable-diameter butt welding joint

Abstract

The utility model belongs to the technical field of butt welding joints, and discloses a multi-specification variable-diameter butt welding joint which comprises a variable-diameter cone. The large welding pipe is arranged at one end of the reducing cone; the first welding structure is arranged on the outer surface of the large welding pipe; the small welding pipe is arranged at one end, far away from the large welding pipe, of the reducing cone; the second welding structure is arranged on the outer surface of the small welding pipe, the first welding structure comprises a large welding ring, the large welding ring is fixedly connected with the welding end face of the large welding pipe in a sleeving mode, and a plurality of arc-shaped welding pieces are fixedly installed on one side of the large welding ring; a first welding groove is formed in the same side of the large welding ring and the arc-shaped welding pieces, and the arc-shaped welding pieces are distributed on one side of the large welding ring in a circumferential array mode and located on the same side as the first welding groove. The multi-specification variable-diameter butt-welding joint welding device is convenient for welding connection of multi-specification variable-diameter butt-welding joints, and is simple and quick to operate.

Description

Technical Field

[0001] This utility model relates to the field of butt welding head technology, and in particular to a multi-specification variable diameter butt welding head. Background Technology

[0002] Multi-size reducing butt weld joints are a widely used pipe connection method, typically used to connect pipes of different sizes or to connect pipes with valves, pumps, and other equipment. This joint consists of two pipes with different end diameters, which are welded together and combined with a reducing cone, allowing the thinner end of the pipe to be directly connected to the thicker end of the pipe.

[0003] Currently, when connecting multi-specification reducing butt welded joints, it is necessary to use professional tools to insert the reducing cone into the inner wall of the pipes at both ends to ensure the sealing of the joint. However, the inventors have discovered that the existing multi-specification reducing butt welded joints are inconvenient to weld. Therefore, we have proposed a multi-specification reducing butt welded joint. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] Specifically, the technical problem to be solved by this utility model is to provide a multi-specification variable diameter butt welding head to solve the technical problem that existing multi-specification variable diameter butt welding heads are inconvenient to weld.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A multi-specification variable diameter butt weld joint includes: a variable diameter cone;

[0008] A large welded pipe, wherein the large welded pipe is disposed at one end of the variable diameter cone;

[0009] A first welding structure is disposed on the outer surface of the large welded pipe;

[0010] A small welded pipe is disposed on the end of the variable-diameter cone away from the large welded pipe;

[0011] The second welding structure is disposed on the outer surface of the small welded tube.

[0012] As an improved technical solution, the first welding structure includes a large welding ring, which is fixedly sleeved with the welding end face of the large welding pipe, and multiple arc-shaped welding pieces are fixedly installed on one side of the large welding ring.

[0013] As an improved technical solution, a first welding groove is formed on the same side of the large welding ring and the multiple arc-shaped welding pieces.

[0014] As an improved technical solution, multiple arc-shaped welding pieces are arranged in a circumferential array on one side of the large welding ring, and are on the same side as the first welding groove.

[0015] As an improved technical solution, the second welding structure includes a small welding ring, which is fixedly sleeved with the welding end face of the small welding tube, and the small welding ring has multiple triangular welding blocks inside.

[0016] As an improved technical solution, a second welding groove is provided inside one side of the small welding ring, and the inner wall of the second welding groove is fixedly connected to the multiple triangular welding blocks.

[0017] As an improved technical solution, multiple triangular welding blocks are arranged in a circumferential array on the inner wall of the second welding groove.

[0018] After adopting the above technical solution, the beneficial effects of this utility model are:

[0019] This invention involves using specialized tools to insert large and small welded pipes into the inner walls of corresponding pipes, with the corresponding pipes then fitted onto the welding end faces of the large and small welded pipes. Simultaneously, the corresponding pipes enter the first and second welding grooves, and are then welded using external welding equipment. During this process, the arc-shaped welding pieces and triangular welding blocks arranged in a circumferential array increase the welding surface area, improving the sealing and welding strength of the weld joint, and facilitating the welding connection of the weld head. This allows for convenient welding connection of multi-specification variable-diameter weld heads, and the operation is simple and quick. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0021] Figure 1 This is a front view schematic diagram of the overall structure of the multi-specification variable diameter butt welding head of this utility model.

[0022] Figure 2 This utility model relates to a multi-specification variable diameter butt welding head. Figure 2 Enlarged structural diagram at point A in the middle.

[0023] Figure 3This is a side view schematic diagram of the overall structure of the multi-specification variable diameter butt welding head of this utility model.

[0024] Figure 4 This utility model relates to a multi-specification variable diameter butt welding head. Figure 3 Enlarged structural diagram at point B.

[0025] Explanation of reference numerals in the attached figures:

[0026] In the figure: 1. Variable diameter cone; 2. Large welded pipe; 3. First welded structure; 31. Large welded ring; 311. First welded groove; 32. Arc-shaped welded piece; 4. Small welded pipe; 5. Second welded structure; 51. Small welded ring; 511. Second welded groove; 52. Triangular welded block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0030] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] Reference Figure 1-4 A multi-specification variable diameter butt welding head is provided, which includes: a variable diameter cone 1;

[0032] Large welded pipe 2 is located at one end of the variable diameter cone 1;

[0033] The first welding structure 3 is disposed on the outer surface of the large welded pipe 2;

[0034] Small welded pipe 4 is located on the end of the variable diameter cone 1 that is away from the large welded pipe 2.

[0035] The second welding structure 5 is disposed on the outer surface of the small welded tube 4.

[0036] Reference Figure 1 and Figure 2 The first welding structure 3 includes a large welding ring 31, which is fixedly sleeved with the welding end face of the large welding pipe 2, and multiple arc-shaped welding pieces 32 are fixedly installed on one side of the large welding ring 31.

[0037] The large welding ring 31 and the multiple arc-shaped welding pieces 32 have a first welding groove 311 on the same side.

[0038] Multiple arc-shaped welding pieces 32 are arranged in a circumferential array on one side of the large welding ring 31 and on the same side as the first welding groove 311. In practical applications, the large welding pipe 2 is inserted into the inner wall of the pipe using professional tools, and the pipe is fitted onto the welding end face of the large welding pipe 2. At the same time, the pipe enters the first welding groove 311, and then welding is performed using external welding equipment. During this process, the arc-shaped welding pieces 32 arranged in a circumferential array increase the welding surface to improve the sealing and welding strength of the weld. They also facilitate the welding connection of the welding head, thus making it convenient to weld and connect welding heads of various specifications and diameters. The operation is simple and quick.

[0039] Reference Figure 3 and Figure 4 The second welding structure 5 includes a small welding ring 51, which is fixedly sleeved with the welding end face of the small welding tube 4. The small welding ring 51 has multiple triangular welding blocks 52 inside.

[0040] A second welding groove 511 is provided inside one side of the small welding ring 51, and the inner wall of the second welding groove 511 is fixedly connected to multiple triangular welding blocks 52.

[0041] Multiple triangular welding blocks 52 are arranged in a circumferential array on the inner wall of the second welding groove 511. In practical applications, a small welding tube 4 is inserted into the inner wall of the pipe using specialized tools, and the pipe is fitted onto the welding end face of the small welding tube 4. At the same time, the pipe enters the second welding groove 511, and then welding is performed using external welding equipment. During this process, the triangular welding blocks 52 arranged in a circumferential array increase the welding surface to improve the sealing and welding strength of the weld, and at the same time facilitate the welding connection of the welding head. This makes it convenient to weld and connect welding heads of various specifications and diameters, and the operation is simple and quick.

[0042] In practical use, the large welding pipe 2 and the small welding pipe 4 are inserted into the inner wall of the corresponding pipe using professional tools, and the corresponding pipes are respectively fitted onto the welding end faces of the large welding pipe 2 and the small welding pipe 4. At the same time, the corresponding pipes enter the first welding groove 311 and the second welding groove 511 respectively. Then, the external welding equipment is used to weld them. During this process, the arc-shaped welding pieces 32 and the triangular welding blocks 52 arranged in a circumferential array increase the welding surface to improve the sealing and welding strength of the weld. At the same time, it facilitates the welding connection of the welding head, thus facilitating the welding connection of multi-specification variable diameter welding heads. The operation is simple and quick. This device not only facilitates the welding connection of multi-specification variable diameter welding heads, but also has a simple and quick operation.

[0043] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A multi-specification variable diameter butt welding joint, characterized in that: include: Variable diameter cone (1); Large welded pipe (2), the large welded pipe (2) is disposed on one end of the variable diameter cone (1); The first welding structure (3) is disposed on the outer surface of the large welded pipe (2); Small welded pipe (4), the small welded pipe (4) is located on the end of the variable diameter cone (1) away from the large welded pipe (2); The second welding structure (5) is disposed on the outer surface of the small welded tube (4).

2. The multi-specification variable diameter butt weld joint according to claim 1, characterized in that: The first welding structure (3) includes a large welding ring (31), which is fixedly sleeved with the welding end face of the large welding pipe (2), and a plurality of arc-shaped welding pieces (32) are fixedly installed on one side of the large welding ring (31).

3. The multi-specification variable diameter butt weld joint according to claim 2, characterized in that: The large welding ring (31) and the multiple arc-shaped welding pieces (32) have a first welding groove (311) on the same side inside.

4. The multi-specification variable diameter butt weld joint according to claim 3, characterized in that: Multiple arc-shaped welding pieces (32) are arranged in a circumferential array on one side of the large welding ring (31) and on the same side as the first welding groove (311).

5. The multi-specification variable diameter butt weld joint according to claim 1, characterized in that: The second welding structure (5) includes a small welding ring (51), which is fixedly sleeved with the welding end face of the small welding tube (4), and the small welding ring (51) is provided with multiple triangular welding blocks (52) inside.

6. The multi-specification variable diameter butt weld joint according to claim 5, characterized in that: A second welding groove (511) is provided inside one side of the small welding ring (51), and the inner wall of the second welding groove (511) is fixedly connected to the multiple triangular welding blocks (52).

7. The multi-specification variable diameter butt weld joint according to claim 6, characterized in that: Multiple triangular welding blocks (52) are arranged in a circular array on the inner wall of the second welding groove (511).

Images