An exquisite card sleeve type joint bend

Abstract

This utility model discloses a compact ferrule-type union elbow, comprising a device body, which includes a union elbow body, a first threaded connecting pipe, a second threaded connecting pipe, an external connecting pipe device, a ferrule, and a locking nut. The union elbow body, the first threaded connecting pipe, and the second threaded connecting pipe are smoothly transitioned and integrally formed. The union elbow body has an L-shaped structure, with the first threaded connecting pipe located at the top left end of the union elbow body and the second threaded connecting pipe located at the bottom of the union elbow body. The ferrule and the locking nut are both fitted onto the external connecting pipe device, which is connected to the first threaded connecting pipe and fixed by the ferrule and the locking nut. This device can improve sealing stability through mechanical fitting and compensate for minor deformations of the pipe or elbow by the deformation of the sealing groove, extending the effective sealing period and reducing the probability of leakage.

Description

Technical Field

[0001] This utility model relates to the field of compression fitting elbow technology, specifically a sophisticated compression fitting elbow. Background Technology

[0002] Currently, elbows for connecting pipes are widely used in petroleum, chemical, power, metallurgy, food, light textile, machinery manufacturing, and residential building complexes.

[0003] After prolonged use, the connection between the existing compression fitting elbow and the pipe is prone to loosening, resulting in insufficient sealing and leakage.

[0004] Therefore, a solution is needed. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a sophisticated compression fitting elbow to solve the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a compact ferrule-type union elbow, comprising a device body, the device body including a union elbow body, a first threaded connecting pipe, a second threaded connecting pipe, an outer connecting pipe device, a ferrule, and a locking nut. The union elbow body, the first threaded connecting pipe, and the second threaded connecting pipe are smoothly transitioned and integrally formed. The union elbow body has an L-shaped structure, with the first threaded connecting pipe located at the top left end of the union elbow body and the second threaded connecting pipe located at the bottom of the union elbow body. The ferrule and the locking nut are both fitted onto the outer connecting pipe device, which is connected to the first threaded connecting pipe and fixed by the ferrule and the locking nut. The first threaded connecting pipe and the second threaded connecting pipe have internal embedded grooves, and a sealing device is embedded in the internal embedded grooves.

[0009] Preferably, the sealing device includes a sealing ring and a sealing block, the sealing ring and the sealing block are smoothly transitioned and integrally formed, and a sealing groove is formed on the inner side of the sealing block, the sealing groove having a rectangular structure.

[0010] Preferably, the external tube device includes an outer tube body, a threaded tube, and an embedded tube. The outer tube body, the threaded tube, and the embedded tube are smoothly transitioned and integrally formed. The threaded tube is located at the right end of the outer tube body, and the embedded tube is located at the right end of the threaded tube. The surface of the embedded tube is provided with several sets of embedded blocks distributed in a ring-shaped equidistant manner. The embedded blocks have a rectangular structure.

[0011] Preferably, the main surface of the flexible elbow is provided with a main reinforcing rib and a reinforcing ring. The main reinforcing rib has an L-shaped structure, and the reinforcing ring has a circular ring structure. The reinforcing ring is provided in several groups.

[0012] (III) Beneficial Effects

[0013] This utility model provides a compact compression fitting elbow. It has the following advantages:

[0014] This solution presents a sophisticated ferrule-type union elbow external pipe device that uses an embedded block within the embedded pipe to engage with an embedded groove and sealing device within the first threaded connecting pipe, forming a mechanically fitted structure. Compared to traditional simple sleeve connections, this fitting increases the connection's gripping force, effectively reducing the risk of loosening after prolonged use. This structurally enhances connection stability, thereby ensuring sealing and reducing the possibility of leakage. The ferrule and locking nut work together to secure the external pipe device and the first threaded connecting pipe, employing a dual fixing mechanism (mechanical fitting and ferrule locking) to further strengthen the connection's tightness and prevent loosening that could lead to seal failure. The sealing devices within the first and second threaded connecting pipes, with their sealing rings, sealing blocks, and sealing grooves, fill the connection gaps. The rectangular structure of the sealing groove adapts to pipe deformation after insertion, enhancing seal adaptability. Even with slight deformation after long-term use, the structural features maintain the seal, reducing leakage. The embedded design of the sealing device and the inner embedded groove ensures a more snug and stable seal. Compared to traditional external or simple contact seals, this provides a more durable seal and effectively addresses the issue of seal degradation after prolonged use. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the structure of the first threaded connecting pipe and the outer connecting pipe device of this utility model;

[0017] Figure 3 This is a schematic diagram of the sealing device of this utility model.

[0018] In the diagram, 1. Device body; 2. Union elbow body; 3. First threaded connecting pipe; 4. Second threaded connecting pipe; 5. External pipe device; 6. Compression sleeve; 7. Locking nut; 8. Internal embedded groove; 9. Sealing device; 10. Sealing ring; 11. Sealing block; 12. Sealing groove; 13. Outer pipe body; 14. Threaded pipe; 15. Embedded pipe; 16. Embedded block; 17. Main reinforcing rib; 18. Reinforcing ring. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-3 This utility model provides a technical solution:

[0021] Example 1

[0022] To address the aforementioned problems: after prolonged use, the connection between the existing compression fitting elbow and the pipe is prone to loosening, resulting in insufficient sealing and leakage.

[0023] The solution is as follows: A sophisticated ferrule-type union elbow includes a device body 1, which comprises a union elbow body 2, a first threaded connecting pipe 3, a second threaded connecting pipe 4, an outer connecting pipe device 5, a ferrule 6, a locking nut 7, and an embedded block 16. The union elbow body 2, the first threaded connecting pipe 3, and the second threaded connecting pipe 4 are smoothly transitioned and integrally formed. The union elbow body 2 has an L-shaped structure. The first threaded connecting pipe 3 is located at the top left end of the union elbow body 2, and the second threaded connecting pipe 4 is located at the bottom of the union elbow body 2. The ferrule 6 and the locking nut 7 are both sleeved on the outer connecting pipe device 5. The outer connecting pipe device 5 is connected to the first threaded connecting pipe 3 and is fixed by the ferrule 6 and the locking nut 7. The first threaded connecting pipe 3 and the second threaded connecting pipe 4 have internal embedded grooves 8, and a sealing device 9 is embedded in the internal embedded grooves 8.

[0024] Analysis of the above: The main body 2 of the union elbow, the first threaded connecting pipe 3, and the second threaded connecting pipe 4 are integrally formed, serving as the basic load-bearing and connecting structure of the elbow, and providing a connection base for components such as the external pipe device 5; the external pipe device 5 is connected to the first threaded connecting pipe 3 and is fixed by compression using the ferrule 6 and the locking nut 7, realizing the connection between the pipe and the elbow. The integrally formed structure makes the main body of the union elbow and other components continuous and strong, reducing splicing gaps and leakage risks, and is easy to process and has good consistency; the fixing method of the ferrule 6 and the locking nut 7 can continuously clamp the external pipe and the first threaded connecting pipe 3 through the thread preload, making the connection stable and facilitating installation, disassembly, and subsequent maintenance and adjustment.

[0025] Example 2:

[0026] Please see Figure 1-3The present invention provides a technical solution based on Embodiment 1: the sealing device 9 includes a sealing ring 10 and a sealing block 11. The sealing ring 10 and the sealing block 11 are smoothly transitioned and integrally formed. A sealing groove 12 is provided on the inner side of the sealing block 11. The sealing groove 12 has a rectangular structure.

[0027] Analysis of the above content: The inner embedded grooves 8 of the first threaded connecting pipe 3 and the second threaded connecting pipe 4 accommodate the sealing device 9, and the sealing ring 10 and the sealing block 11 fill the connection gap using their own structures; the sealing groove 12 of the sealing block 11 is adapted to the embedded block 16 of the embedded pipe 15 to form a mechanical seal and deformation compensation structure. The embedded sealing structure makes the sealing device 9 fit tightly against the inner wall of the connecting pipe, enhancing the sealing reliability; the sealing groove 12 and the embedded block 16 cooperate to improve the sealing stability by mechanical fitting, and also to compensate for the slight deformation of the pipe or elbow by the deformation of the sealing groove 12, extending the effective sealing period and reducing the probability of leakage.

[0028] Example 3:

[0029] Please see Figure 1-3 The present invention provides a technical solution based on Embodiment 1: the external tube device 5 includes an outer tube body 13, a threaded tube 14 and an embedded tube 15. The outer tube body 13, the threaded tube 14 and the embedded tube 15 are smoothly transitioned and integrally formed. The threaded tube 14 is located at the right end of the outer tube body 13 and the embedded tube 15 is located at the right end of the threaded tube 14. The surface of the embedded tube 15 is provided with a plurality of sets of embedded blocks 16 distributed in a ring-shaped equidistant manner. The embedded blocks 16 have a rectangular structure.

[0030] Analysis of the above content: The outer pipe body 13 supports the external pipeline, the threaded pipe 14 cooperates with the ferrule 6 and the locking nut 7 to achieve threaded connection pre-tightening, the embedded block 16 of the embedded pipe 15 is inserted into the inner embedded groove 8 and the sealing groove 12 of the sealing device 9 to form a multi-connection and sealing structure, and the integral molding ensures the structural strength and connection continuity of the outer pipe device 5; the cooperation of the embedded block 16 with the inner embedded groove and the sealing groove changes the connection between the outer pipe and the elbow from a simple sleeve to a mechanical fit + seal, which improves the connection strength and sealing performance, distributes the stress on the pipeline, and reduces the risk of connection loosening.

[0031] Example 4:

[0032] Please see Figure 1-3 Based on Embodiment 1, this utility model provides a technical solution: the surface of the main body 2 of the flexible elbow is provided with a main reinforcing rib 17 and a reinforcing ring 18. The main reinforcing rib 17 has an L-shaped structure, and the reinforcing ring 18 has a circular ring structure. The reinforcing ring 18 is provided with several groups.

[0033] Analysis of the above content: The main reinforcing ribs 17 are distributed in an L-shape along the main body of the union elbow, and the reinforcing rings 18 are arranged in a ring shape. By increasing the structural thickness and changing the stress distribution, the two enhance the deformation resistance of the main body of the union elbow 2, improve the overall strength and rigidity of the main body of the union elbow 2, and make it less prone to deformation when subjected to pipeline medium pressure, installation stress, external forces, etc. for a long time; maintain the structural stability of the connection part (the connection between the first and second threaded connecting pipes and the main body of the union elbow), indirectly ensure the connection sealing, and extend the overall service life of the elbow.

[0034] Specifically, a comparison of relevant test data and practical application data for this solution.

[0035] Data Description

[0036] 1. Leakage rate:

[0037] Test conditions: Run water for 1000 hours under a constant pressure of 0.8MPa and observe the leakage at the joints.

[0038] Significance of the data: This utility model reduces the fluid penetration path by combining a sealing device (sealing ring + sealing groove) with a mechanical fitting structure (embedded block + inner embedded groove), resulting in a 40% reduction in leakage rate compared to traditional solutions.

[0039] 2. Connection loosening rate:

[0040] Test conditions: Simulate 500 pipe disassembly and assembly cycles to detect loose threads or ferrule failure at the joints.

[0041] Significance of the data: The dual fixing mechanism of the ferrule and the locking nut, combined with the mechanical engagement of the insert block, makes the connection structure more stable, reducing the loosening rate from 8% to 3%.

[0042] 3. Effective sealing period:

[0043] Test conditions: Continuous operation under alternating pressure (0.5-1.2MPa) and recording the time of the first leakage.

[0044] Significance of the data: The rectangular structure of the sealing groove can compensate for minor deformation of the pipeline, and the reinforcing ribs and reinforcing rings improve the structural rigidity, extending the effective sealing period from 12 months to 14 months.

[0045] 4. Deformation pressure threshold:

[0046] 1. Test conditions: Apply axial pressure to the elbow body and measure the pressure value when plastic deformation occurs.

[0047] 2. Data significance: The combination of L-shaped main reinforcing ribs and ring-shaped reinforcing rings enhances the elbow's resistance to pressure deformation, increasing the threshold from 10MPa to 12MPa.

[0048] Data Validity Statement

[0049] Testing standards: Refer to GB / T12459 "Steel Butt Welded Seamless Pipe Fittings" and ISO8233 Pipe Connection Sealing Test Specification.

[0050] Sample size: Each test group contains 50 samples, and the data is averaged with an error range controlled within ±5%.

[0051] Third-party verification: The test was conducted by a third-party testing agency, with the ambient temperature controlled at 23±2℃ and humidity at 50±5% to ensure that the data is objective and reliable.

[0052] Practical application correlation: The data matches the results of two years of trial operation of pipelines in petrochemical fields, and the new solution has significant advantages in high-pressure and high-frequency disassembly and assembly scenarios.

[0053] This set of data, through quantitative comparison, verifies the actual improvement effect of this utility model in sealing stability, connection reliability, and structural strength.

[0054] The present invention comprises: 1. Device body; 2. Union elbow body; 3. First threaded connecting pipe; 4. Second threaded connecting pipe; 5. Outer pipe device; 6. Compression sleeve; 7. Locking nut; 8. Inner embedded groove; 9. Sealing device; 10. Sealing ring; 11. Sealing block; 12. Sealing groove; 13. Outer pipe body; 14. Threaded pipe; 15. Embedded pipe; 16. Embedded block; 17. Main reinforcing rib; 18. Reinforcing ring. All components are general standard parts or parts known to those skilled in the art, and their structure and principle are based on the present invention. Technical personnel can learn about this through technical manuals or conventional experimental methods. The problem solved by this utility model is that after prolonged use, the connection between the ferrule-type union elbow and the pipe is prone to loosening, resulting in insufficient sealing. This leads to leakage at the connection between the ferrule-type union elbow and the pipe. This utility model, through the combination of the above-mentioned components, can improve the sealing stability by mechanical fitting, and compensate for the slight deformation of the pipe or elbow by the deformation of the sealing groove, thereby extending the effective sealing period and reducing the probability of leakage.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model 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 basic characteristics of this utility model. Therefore, the embodiments should be considered illustrative and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0056] 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 precision push to fit union bend characterised in that: The device includes a main body (1), which includes a union elbow body (2), a first threaded connecting pipe (3), a second threaded connecting pipe (4), an external pipe device (5), a ferrule (6), and a locking nut (7). The union elbow body (2), the first threaded connecting pipe (3), and the second threaded connecting pipe (4) are smoothly transitioned and integrally formed. The union elbow body (2) has an L-shaped structure. The first threaded connecting pipe (3) is located at the top left end of the union elbow body (2), and the second threaded connecting pipe (4) is located at the bottom of the union elbow body (2). The ferrule (6) and the locking nut (7) are both sleeved on the external pipe device (5). The external pipe device (5) is connected to the first threaded connecting pipe (3) and is fixed by the ferrule (6) and the locking nut (7). The first threaded connecting pipe (3) and the second threaded connecting pipe (4) are provided with an inner embedded groove (8), and a sealing device (9) is embedded in the inner embedded groove (8); The sealing device (9) includes a sealing ring (10) and a sealing block (11). The sealing ring (10) and the sealing block (11) are smoothly transitioned and integrally formed. A sealing groove (12) is provided on the inner side of the sealing block (11). The sealing groove (12) has a rectangular structure. The external tube device (5) includes an outer tube body (13), a threaded tube (14), and an embedded tube (15). The outer tube body (13), the threaded tube (14), and the embedded tube (15) are smoothly transitioned and integrally formed. The threaded tube (14) is located at the right end of the outer tube body (13), and the embedded tube (15) is located at the right end of the threaded tube (14). The surface of the embedded tube (15) is provided with several sets of embedded blocks (16) distributed in a ring-shaped equidistant manner. The embedded blocks (16) have a rectangular structure. The main body (2) of the union elbow is provided with a main reinforcing rib (17) and a reinforcing ring (18) on its surface. The main reinforcing rib (17) is L-shaped and the reinforcing ring (18) is circular. The reinforcing ring (18) is provided with several groups.

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