Pipe orifice structure capable of reducing welding leakage rate

Abstract

The utility model discloses a pipe orifice structure capable of reducing welding leakage rate, which relates to the technical field of pipeline welding and comprises a first connecting pipe and a second connecting pipe, and the first connecting pipe is inserted into the second connecting pipe. The top of the second connecting pipe is of a sectional flaring structure, and a welding flux accumulation area, a welding flux permeation area and a pipeline positioning area are sequentially arranged in the second connecting pipe. The diameter of the top of the solder accumulation area is larger than that of the bottom of the solder accumulation area, so that solder can be conveniently concentrated and guided to the solder permeation area; the diameter of the welding flux permeation area is matched with that of the bottom of the welding flux accumulation area, so that uniform permeation of the welding flux is ensured; the pipeline positioning area is in a straight pipe shape, the inner diameter is slightly larger than the outer diameter of the first connecting pipe and smaller than the inner diameter of the welding flux permeation area, and pipeline concentricity during welding is guaranteed. By optimizing the structural design, the welding quality is remarkably improved, the leakage rate is reduced, the dependence on the skills of welders is reduced, and wide application prospects are achieved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding technology, specifically a pipe end structure that reduces welding leakage rate. Background Technology

[0002] Currently, the pipe welding methods used in the industry include large pipe with small pipe, large pipe with reduced-end pipe, flared pipe with straight end, and flared pipe with reduced end. However, all of these methods suffer from misalignment between the two pipes during welding, resulting in uneven solder penetration. Assembly line operations make it difficult to guarantee welding consistency and reliability, placing a high demand on the welder's skill level. Poor welding leads to frequent problems such as slow leaks, incomplete welds, or easy cracking of pipe ends. Therefore, there is an urgent need for a pipe end structure that reduces welding leakage rates to solve these problems. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide a pipe end structure that reduces welding leakage rate, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A pipe structure for reducing welding leakage rate includes a first connecting pipe and a second connecting pipe. The first connecting pipe is inserted into the second connecting pipe. The top of the second connecting pipe adopts a segmented flared structure. The flared structure includes a solder accumulation area, a solder penetration area, and a pipe positioning area. The solder accumulation area is located at the top of the second connecting pipe. The solder penetration area is located at the bottom of the solder accumulation area and communicates with its interior. The pipe positioning area is located at the bottom of the solder penetration area and communicates with its interior.

[0006] As a further embodiment of this utility model: the solder accumulation area is frustum-shaped, and the top diameter is larger than the bottom diameter; the solder penetration area is straight tube-shaped, and the diameter matches the bottom diameter of the solder accumulation area; the pipe positioning area is straight tube-shaped, and the inner diameter is slightly larger than the outer diameter of the connecting pipe; the inner diameter of the pipe positioning area is smaller than the inner diameter of the solder penetration area.

[0007] Compared with the prior art, the beneficial effects of this utility model are:

[0008] 1. The pipeline positioning area can automatically adjust the concentricity of the two connecting pipelines to ensure the concentricity of the welding area and effectively avoid uneven solder penetration caused by misalignment during the welding process.

[0009] 2. The solder penetration zone is deep and the solder penetration thickness is uniform, which improves the welding strength and reliability;

[0010] 3. Low welding defect rate, significantly reducing the incidence of problems such as slow leakage, incomplete welding or pipe cracking;

[0011] 4. It does not require welders to have high welding skills, reducing reliance on the welder's proficiency and improving production efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a pipe opening structure for reducing welding leakage rate in an embodiment of this utility model.

[0013] Figure 2 This is a cross-sectional view of a pipe opening structure for reducing welding leakage rate in an embodiment of this utility model.

[0014] Figure 3 This is a schematic diagram of the completed welding process of a pipe end structure for reducing welding leakage rate in an embodiment of this utility model.

[0015] In the diagram: 1. Connecting pipe one; 2. Solder accumulation area; 3. Solder penetration area; 4. Pipe positioning area; 5. Connecting pipe two. Detailed Implementation

[0016] 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.

[0017] In this embodiment of the utility model, please refer to Figures 1 to 3 A pipe structure for reducing welding leakage rate includes a connecting pipe 1 and a connecting pipe 2 5. The connecting pipe 1 is inserted into the connecting pipe 2 5. The top of the connecting pipe 2 5 adopts a segmented flared structure. The flared structure includes a solder accumulation area 2, a solder penetration area 3, and a pipe positioning area 4. The solder accumulation area 2 is located at the top of the connecting pipe 2 5. The solder penetration area 3 is located at the bottom of the solder accumulation area 2 and communicates with its interior. The pipe positioning area 4 is located at the bottom of the solder penetration area 3 and communicates with its interior.

[0018] The solder accumulation area 2 is frustum-shaped, with a top diameter larger than the bottom diameter; the solder penetration area 3 is a straight tube, with a diameter matching the bottom diameter of the solder accumulation area 2; the pipe positioning area 4 is a straight tube, with an inner diameter slightly larger than the outer diameter of the connecting pipe 1; and the inner diameter of the pipe positioning area 4 is smaller than the inner diameter of the solder penetration area 3.

[0019] In this embodiment, the solder penetration zone 3 can be designed with different gaps depending on the pipe material and the pipe outer diameter and wall thickness, so as to ensure the welding strength of the two sets of pipes.

[0020] Insert connecting pipe 1 into connecting pipe 2 5. The pipe positioning area 4 ensures that the central axes of connecting pipe 1 and connecting pipe 2 5 are on the same straight line, thereby ensuring the concentricity of connecting pipe 1 and connecting pipe 2 5 at the welding position during welding, and making the solder thickness uniform. During welding, welding is carried out at the solder accumulation area 2. The solder accumulation area 2 is designed in the shape of a frustum, which allows more solder to enter the solder penetration area, thereby effectively increasing the bonding length of the solder.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pipe end structure for reducing welding leakage rate, comprising a first connecting pipe and a second connecting pipe, wherein the first connecting pipe is inserted into the second connecting pipe, characterized in that, The top of the second connecting pipe adopts a segmented flared structure, which includes a solder accumulation area, a solder penetration area and a pipe positioning area. The solder accumulation area is located at the top of the second connecting pipe, the solder penetration area is located at the bottom of the solder accumulation area and is connected to its interior, and the pipe positioning area is located at the bottom of the solder penetration area and is connected to its interior.

2. The pipe end structure for reducing welding leakage rate according to claim 1, characterized in that, The solder accumulation area is frustum-shaped, with the top diameter being larger than the bottom diameter; the solder penetration area is a straight tube, with its diameter matching the bottom diameter of the solder accumulation area; the pipe positioning area is a straight tube, with its inner diameter slightly larger than the outer diameter of the connecting pipe; and the inner diameter of the pipe positioning area is smaller than the inner diameter of the solder penetration area.

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