Socket welding elbow with protective structure

Abstract

The utility model relates to the technical field of elbows, in particular to a socket welding elbow with a protective structure, which comprises an elbow body, socket heads are integrally formed at two ends of the elbow body, pipelines are inserted into the socket heads, the joints of the pipelines and the socket heads are welded into welding joints, rubber covers are arranged at the ends of the socket heads, and the protective structure is arranged on the elbow body. One end of the rubber cover is arranged on a pipe body of the pipeline in a sleeving mode, and the rubber cover covers the welding joint. The pipe joint has the advantages that the rubber cover is arranged at the end of the socket head, one end of the rubber cover is fixed in the reserved groove, and the other end of the rubber cover is arranged on the pipe body in a sleeving mode through the expanded and deformed rubber ring, so that the rubber cover can tightly cover the welding joint. By means of the structure, a reliable physical barrier can be formed, external water vapor, dust, corrosive media and the like are effectively prevented from making direct contact with the welding joint, the possibility that the welding joint is rusted is greatly reduced, and therefore the service life of the welding joint is prolonged, and the connection reliability of the welding joint is improved.

Description

Technical Field

[0001] This utility model relates to the field of elbows, specifically a socket weld elbow with a protective structure. Background Technology

[0002] In the field of pipeline connections, socket weld elbows are a common connecting component widely used in various fluid transport systems. Traditional socket weld elbows mainly consist of an elbow body and sockets at both ends. The connection between the pipe and the elbow is achieved by inserting the pipe into the socket and welding it. However, this traditional structure has several problems in practical applications:

[0003] Insufficient Protection of Welded Joints: The welded joint, formed after welding the pipe to the socket, is a critical connection point, and its quality directly affects the safety and reliability of the entire pipeline system. However, in traditional structures, welded joints are typically exposed to the external environment, lacking effective protective measures. Due to the complex and diverse environments in which pipeline systems operate, they may face harsh conditions such as humidity, rain, and high salt spray. External moisture and corrosive media can easily penetrate the welded joint, leading to corrosion. Over time, corrosion intensifies, weakening the welded joint's strength and even causing fractures, severely impacting the normal operation of the pipeline system and increasing maintenance costs and safety hazards. Sealing and Stability Risks: Even if the welded joint initially meets connection requirements, the lack of a protective structure allows external factors to adversely affect it during use, impacting the sealing and connection stability between the welded joint and the pipe / elbow. For example, oxides produced by corrosion can cause uneven sealing surfaces, leading to media leakage; reduced strength due to corrosion can loosen the connection between the pipe and elbow, affecting the stable operation of the entire pipeline system.

[0004] To address these issues, the industry has attempted various protective measures, such as painting welded joints. However, these methods have significant limitations: Limited protective effect: While painting can isolate the welded joints from the external environment to some extent, the paint layer is susceptible to mechanical damage and chemical corrosion, leading to peeling. Once the paint layer is damaged, the welded joint will be exposed to the external environment again, losing its protective function and failing to fundamentally solve the corrosion problem. High maintenance costs: Paint protection requires regular maintenance and touch-ups to ensure its effectiveness. This not only increases manpower, material resources, and time costs, but also makes maintenance extremely difficult in hard-to-reach pipe sections, compromising the durability and reliability of the protective effect.

[0005] Given the numerous problems with the protection of welded joints in traditional socket weld elbows, and the limitations of existing protective measures, developing a socket weld elbow with an effective protective structure is of significant practical importance. By designing a specialized protective structure, the welded joint can be reliably protected directly, preventing the intrusion of external moisture and corrosive media, improving the corrosion resistance of the welded joint, extending the service life of the pipeline system, reducing maintenance costs and safety risks, and meeting the demands of industrial production and infrastructure construction for the safe and stable operation of pipeline systems. Utility Model Content

[0006] The purpose of this invention is to provide a socket weld elbow with a protective structure to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a socket weld elbow with a protective structure, comprising an elbow body, both ends of which are integrally formed with socket plugs, and pipes are inserted into the socket plugs. The pipes and socket plugs are welded together to form a weld joint. The end of the socket plug is provided with a rubber cover, one end of which is fitted onto the pipe body and covers the weld joint.

[0008] Preferably, the inner ring diameter of the end of the socket near the elbow body is equal to the inner ring diameter of the pipe, and the inner ring diameters of the pipe and the elbow body are equal.

[0009] Preferably, one end of the connector has a reserved groove, which is an annular groove, and one end of the rubber cover is fixed in the reserved groove, with the length of the rubber cover being greater than the depth of the reserved groove.

[0010] Preferably, a rubber ring is fixed to the other end of the rubber cover. The inner circumferential surface of the rubber ring is provided with a segmented groove, which is an annular groove. After the rubber ring is expanded and deformed, it is fitted onto the pipe body.

[0011] Preferably, one end of the socket is fixed with an elastic clip, which is an arc-shaped piece. There are two elastic clips, which are symmetrically distributed about the socket. The elastic clips abut against the connection between the rubber cover and the rubber ring, and the surface of the elastic clips has an opening.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model proposes a socket weld elbow with a protective structure. A rubber cover is installed at the end of the socket, with one end fixed in a pre-drilled groove and the other end fitted onto the pipe body via an expanded and deformed rubber ring. This allows the rubber cover to tightly cover the weld joint. This structure forms a reliable physical barrier, effectively preventing external moisture, dust, corrosive media, etc., from directly contacting the weld joint, greatly reducing the possibility of corrosion and thus improving the service life and connection reliability of the weld joint. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a side view of the structure of this utility model;

[0016] Figure 3 for Figure 2 Sectional view of the structure at point AA;

[0017] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0018] Figure 5 This is a schematic diagram of the connection structure between the elbow body and the socket of this utility model.

[0019] In the diagram: 1. Elbow body; 2. Socket; 3. Pipe; 4. Welded joint; 5. Reserved groove; 6. Rubber cover; 7. Rubber ring; 8. Segmented groove; 9. Elastic clamp; 10. Through port. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Please see Figures 1-5This utility model provides a technical solution: a socket weld elbow with a protective structure, including an elbow body 1, both ends of which are integrally formed with socket plugs 2, and pipes 3 are inserted into the socket plugs 2. The inner ring diameter of the end of the socket plug 2 closest to the elbow body 1 is equal to the inner ring diameter of the pipe 3. The inner ring diameters of the pipe 3 and the elbow body 1 are equal. The joint between the pipe 3 and the socket plug 2 is welded to form a welding node 4. After the welding node 4 is formed, it is polished. As the connection node between the socket plug 2 and the pipe 3, the welding node 4 needs to be protected to prevent corrosion and breakage.

[0022] The end of the socket 2 is provided with a rubber cover 6. One end of the rubber cover 6 is fitted onto the pipe body of the pipe 3, and the rubber cover 6 covers the welding joint 4. One end of the socket 2 has a reserved groove 5, which is an annular groove. One end of the rubber cover 6 is fixed in the reserved groove 5, and the length of the rubber cover 6 is greater than the depth of the reserved groove 5. The other end of the rubber cover 6 is fixed with a rubber ring 7. The inner annular surface of the rubber ring 7 has a segmented groove 8, which is an annular groove. After the rubber ring 7 is expanded and deformed, it is fitted onto the pipe body of the pipe 3. After the welding joint 4 is processed, the rubber ring 7 and the rubber cover 6 are pulled out from the reserved groove 5. The rubber ring 7 is expanded during tensioning, and the retracted rubber ring 7 is fitted onto the pipe body of the pipe 3. At this time, the rubber cover 6 covers the welding joint 4, reducing the corrosion of the welding joint 4 by external moisture.

[0023] One end of the connector 2 is fixed with an elastic clip 9. The elastic clip 9 is an arc-shaped piece. There are two elastic clips 9, which are symmetrically distributed about the connector 2. The elastic clip 9 rests against the connection between the rubber cover 6 and the rubber ring 7. The surface of the elastic clip 9 has an opening 10. After the elastic clip 9 rests against the connection between the rubber cover 6 and the rubber ring 7, it prevents the rubber ring 7 from moving back and ensures that the rubber cover 6 continuously protects the welding joint 4.

[0024] Instructions for using a socket weld elbow with a protective structure: Insert the socket plugs 2 at both ends of the elbow body 1 into the pipes 3 to be connected. Ensure that the inner ring diameter of the end of the socket plug 2 closest to the elbow body 1 is equal to the inner ring diameter of the pipe 3, and that the inner ring diameters of the pipe 3 and the elbow body 1 are also equal to ensure a smooth connection. Weld at the insertion point of the pipe 3 and the socket plug 2 to form a welded joint 4, completing the connection between the pipe 3 and the elbow body 1. Polish the welded joint 4 to make its surface smooth, reduce stress concentration, and improve connection quality. Remove the rubber cover 6 and its matching rubber ring 7, and check that the rubber cover 6 and rubber ring 7 are intact and free from defects such as breaks or cracks. Insert one end of the rubber cover 6 into the annular pre-drilled groove 5 at one end of the socket plug 2, ensuring that this end of the rubber cover 6 is firmly fixed. The length of the rubber cover 6 should be greater than the depth of the pre-drilled groove 5 to ensure sufficient length to cover the welded joint 4 later. At this point, the rubber cover 6 is in a relaxed state, located within the pre-drilled groove 5, awaiting subsequent operations. Because the inner surface of the rubber ring 7 has an annular segmented groove 8, the inner diameter of the rubber ring 7 is smaller than the outer diameter of the pipe 3 in its natural state. Pulling the rubber ring 7 outward from the pre-reserved groove 5 causes it to expand and deform during the pulling process. After the rubber ring 7 is pulled out to the appropriate position, it is fitted onto the pipe body of the pipe 3. Utilizing the elastic recoil force of the rubber ring 7, it is tightly fitted to the surface of the pipe 3, at which point the rubber cover 6 covers the welding joint 4. At one end of the socket 2, two symmetrically distributed arc-shaped elastic clips 9 are fixed. The surface of the elastic clips 9 has an opening 10 to facilitate installation and subsequent adjustments. The elastic clips 9 are pressed against the connection between the rubber cover 6 and the rubber ring 7. Utilizing the elastic force of the elastic clips 9, they are tightly pressed against the connection, preventing the rubber ring 7 from slipping back on the pipe 3. This ensures that the rubber cover 6 always stably covers the welding joint 4, providing continuous protection and reducing the erosion of the welding joint 4 by external moisture. During use, regularly check the condition of the rubber cover 6 and rubber ring 7 for damage, aging, loosening, etc., and ensure that the elastic clip 9 is still firmly abutting the connection between the rubber cover 6 and rubber ring 7. If minor damage is found in the rubber cover 6 or rubber ring 7, it can be repaired; if the damage is serious or the elasticity is lost due to aging, the rubber cover 6 and rubber ring 7 should be replaced in time; if the elastic clip 9 is loose or damaged, it needs to be re-fixed or replaced to ensure that the protective structure remains effective and to extend the service life of the socket weld elbow.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A socket welding elbow with a protective structure, comprising an elbow body (1), socket heads (2) are integrally formed at both ends of the elbow body (1), pipes (3) are inserted into the socket heads (2), and the pipes (3) and the socket heads (2) are welded into welding nodes (4) at the insertion positions, characterized in that: The end of the socket head (2) is provided with a rubber cover (6), one end of the rubber cover (6) is sleeved on the pipe body of the pipeline (3), and the rubber cover (6) covers the welding joint (4).

2. The socket weld elbow with protective structure according to claim 1, characterized in that: The inner ring diameter of the one end of the socket head (2) close to the elbow body (1) is equal to the inner ring diameter of the pipeline (3), and the inner ring diameters of the pipeline (3) and the elbow body (1) are equal.

3. The socket weld elbow with protective structure according to claim 1, characterized in that: One end of the socket head (2) is provided with a reserved slot (5), the reserved slot (5) is an annular slot, one end of the rubber cover (6) is fixed in the reserved slot (5), and the pipe length of the rubber cover (6) is greater than the depth of the reserved slot (5).

4. The socket weld elbow with protective structure according to claim 1, characterized in that: The other end of the rubber cover (6) is fixed with a rubber ring (7), the inner ring surface of the rubber ring (7) is provided with a segmented slot (8), the segmented slot (8) is an annular slot, and the rubber ring (7) is sleeved on the pipe body of the pipeline (3) after being expanded and deformed.

5. The socket weld elbow with protective structure according to claim 1, characterized in that: One end of the socket head (2) is fixed with an elastic clamping piece (9), the elastic clamping piece (9) is a circular arc piece, the elastic clamping piece (9) is provided with two, the two elastic clamping pieces (9) are symmetrically distributed about the socket head (2), the elastic clamping piece (9) abuts against the connection part of the rubber cover (6) and the rubber ring (7), and the surface of the elastic clamping piece (9) is provided with a through hole (10).

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