Lengthened pipe joint

Abstract

The utility model discloses a lengthened pipe joint which comprises a device body, the device body comprises a pipe joint device, a first connecting pipe device, a second connecting pipe device, a locking bolt and a locking nut, the first connecting pipe device is installed at the left end of the pipe joint device through threads, and the second connecting pipe device is installed at the right end of the pipe joint device through threads; the pipe joint device comprises a joint pipe, a first threaded joint cover and a second threaded joint cover, the joint pipe, the first threaded joint cover and the second threaded joint cover are in smooth transition and are of an integrated machining forming structure, the first threaded joint cover is located at the left end of the joint pipe, and the second threaded joint cover is located at the right end of the joint pipe. The first threaded connector cover and the second threaded connector cover are each of a cylindrical structure. According to the device, through triple guarantee of threaded connection, elastic sealing and mechanical locking, the stability, the sealing performance and the durability of a pipeline system are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting technology, specifically an extended pipe fitting. Background Technology

[0002] Hydraulic terminology refers to the parts that connect pipelines or mount pipelines onto hydraulic components in a hydraulic system. It is a general term for detachable connectors in a fluid passage, mainly including: welded type, compression fitting type, crimped type, and flared type.

[0003] After being connected to a pipe, existing pipe fittings are prone to loosening at the connection point after prolonged use, leading to leakage and affecting the use of the pipe.

[0004] Therefore, a solution is needed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, this utility model provides an extended pipe fitting to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an extended pipe connector, comprising a device body, the device body including a pipe connector assembly, a first connecting pipe assembly, a second connecting pipe assembly, a locking bolt, and a locking nut. The first connecting pipe assembly is threadedly installed at the left end of the pipe connector assembly, and the second connecting pipe assembly is threadedly installed at the right end of the pipe connector assembly. The pipe connector assembly includes a connector pipe, a first threaded connector cover, and a second threaded connector cover. The connector pipe, the first threaded connector cover, and the second threaded connector cover are smoothly transitioned and integrally formed. The first threaded connector cover is located at the left end of the connector pipe, and the second threaded connector cover is located at the right end of the connector pipe. Both the first threaded connector cover and the second threaded connector cover are cylindrical in shape and have a through-type internal structure. A first locking outer ring is provided on the outer surface of the first threaded connector cover and the second threaded connector cover. The first locking outer ring is circular in shape, and two sets of locking holes are provided on the surface of the first locking outer ring in an annular, equidistant manner.

[0009] Preferably, both the first connecting pipe device and the second connecting pipe device include a main pipe body, a second locking outer ring, and a threaded pipe. The main pipe body, the second locking outer ring, and the threaded pipe are smoothly transitioned and integrally formed. The threaded pipe is located at the inner end of the main pipe body, and the second locking outer ring is located on the surface of the main pipe body. The surface of the second locking outer ring has two sets of locking holes distributed in an annular equidistant manner.

[0010] Preferably, a rubber sealing ring is attached to the inner end of the threaded pipe, and the rubber sealing ring has an O-shaped structure.

[0011] Preferably, the locking bolt passes between the first locking outer ring and the second locking outer ring, and the locking nut is installed on the locking bolt.

[0012] (III) Beneficial Effects

[0013] This utility model provides an extended pipe fitting. It has the following advantages:

[0014] In this design, the extended pipe fitting unit, consisting of a pipe fitting assembly, a first connecting pipe assembly, and a second connecting pipe assembly, is threaded together. A locking bolt connects the first and second locking outer rings, and a locking nut further secures the connection. This multi-layered connection and locking structure, compared to existing simpler connection methods, effectively prevents loosening after prolonged use, significantly reduces the risk of leakage, and ensures operational stability. The threads and locking components work together to form a robust connection system, enhancing overall connection reliability. The integrated molding structure ensures tighter connections between components, reducing the risk of loosening due to seams. It also boasts strong adaptability and stable connection to pipelines. Compared to existing pipe fittings that may have improper splicing or loosening issues, this design offers significant structural advantages, guaranteeing long-term stable 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 pipe fitting device of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the first connecting pipe device of this utility model.

[0018] In the figure, 1. Device body; 2. Pipe fitting device; 3. First connecting pipe device; 4. Second connecting pipe device; 5. Locking bolt; 6. Locking nut; 7. Connector pipe; 8. First threaded connector cover; 9. Second threaded connector cover; 10. First locking outer ring; 11. Locking hole; 12. Main pipe body; 13. Second locking outer ring; 14. Threaded pipe; 15. Rubber sealing ring body. 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] The problem to be solved is that after prolonged use, the connection between the existing pipe fittings and the pipe is prone to loosening, leading to leakage and affecting the use of the pipe.

[0023] The solution is as follows: An extended pipe fitting includes a device body 1, which includes a pipe fitting device 2, a first connecting pipe device 3, a second connecting pipe device 4, a locking bolt 5, and a locking nut 6. The first connecting pipe device 3 is threadedly installed on the left end of the pipe fitting device 2, and the second connecting pipe device 4 is threadedly installed on the right end of the pipe fitting device 2. The pipe fitting device 2 includes a fitting pipe 7, a first threaded fitting cover 8, and a second threaded fitting cover 9. The fitting pipe 7, the first threaded fitting cover 8, and the second threaded fitting cover 9 are smoothly transitioned and integrally formed. The first threaded fitting cover 8 is located at the left end of the fitting pipe 7, and the second threaded fitting cover 9 is located at the right end of the fitting pipe 7. Both the first threaded fitting cover 8 and the second threaded fitting cover 9 are cylindrical and have a through-type internal structure. The outer surface of the first threaded fitting cover 8 and the second threaded fitting cover 9 is provided with a first locking outer ring 10. The first locking outer ring 10 is circular and has two sets of locking holes 11 distributed in an annular equidistant manner on its surface.

[0024] Analysis of the above: The device body 1 serves as the core architecture, achieving coordinated operation of each component through threaded connections and mechanical locking. The first connecting pipe device 3 and the second connecting pipe device 4 respectively engage with the left and right ends of the pipe fitting device 2 via threads, forming a detachable sealed connection. Locking bolts 5 and locking nuts 6 further reinforce the connection, preventing thread loosening. The dual protection of threaded connection and bolt locking significantly improves vibration and fatigue resistance, reducing the risk of loosening after long-term use. The fitting pipe 7, the first threaded fitting cover 8, and the second threaded fitting cover 9 are smoothly transitioned and integrally machined, ensuring minimal resistance when fluid flows in the pipe and reducing pressure loss. The first locking outer ring 10 aligns with the second locking outer ring 13 of the connecting pipe device through the locking hole 11 on its surface, providing a fixing point for the bolt connection. The first locking outer ring 10 provides rigid support, dispersing the bolt locking force and preventing local deformation.

[0025] Example 2:

[0026] Please see Figure 1-3 The present invention provides a technical solution based on Embodiment 1: the first connecting pipe device 3 and the second connecting pipe device 4 both include a main pipe body 12, a second locking outer ring 13 and a threaded pipe 14. The main pipe body 12, the second locking outer ring 13 and the threaded pipe 14 are smoothly transitioned and integrally formed. The threaded pipe 14 is located at the inner end of the main pipe body 12, and the second locking outer ring 13 is located on the surface of the main pipe body 12. The surface of the second locking outer ring 13 is provided with two sets of locking holes 11 distributed in an annular equidistant manner.

[0027] Analysis of the above content: Threaded pipe 14: The external thread engages with the internal thread of the pipe fitting device 2 to form an initial sealed connection. Second locking outer ring 13: Cooperates with the first locking outer ring 10, and applies radial pressure through bolt 5 and nut 6 to enhance the stability of the connection. The threaded connection provides an initial seal, and bolt locking further enhances the anti-leakage capability. The thread specification can be adjusted according to requirements to adapt to the pipe standards of different industries. The second locking outer ring 13 evenly distributes the bolt pressure to avoid damage to the thread due to local overload.

[0028] Example 3:

[0029] Please see Figure 1-3 Based on Embodiment 1, this utility model provides a technical solution: a rubber sealing ring 15 is attached to the inner end of the threaded pipe 14, and the rubber sealing ring 15 has an O-shaped structure.

[0030] Analysis of the above content: When the threaded pipe 14 is screwed into the pipe fitting device 2, the rubber sealing ring 15 is compressed, filling the thread gap and forming an elastic sealing barrier to prevent fluid leakage, compensate for minor displacements caused by temperature changes, vibration or pressure fluctuations, maintain sealing performance, and ensure reliable sealing under both low and high pressure environments. The rubber material can resist the erosion of various chemical media, is suitable for different working conditions, and extends the maintenance cycle, reduces the risk of leakage, and lowers the maintenance cost and downtime of the pipeline system.

[0031] Example 4:

[0032] Please see Figure 1-3 Based on Embodiment 1, this utility model provides a technical solution: the locking bolt 5 is inserted between the first locking outer ring 10 and the second locking outer ring 13, and the locking nut 6 is installed on the locking bolt 5.

[0033] Analysis of the above content: By tightening the nut 6, the bolt 5 generates axial tension between the first locking outer ring 10 and the second locking outer ring 13, pressing the two rings tightly together. In this way, the tightness of the connection between the first connecting pipe device 3 and the second connecting pipe device 4 and the pipe joint device 2 can be effectively improved, preventing loosening and greatly improving the sealing performance.

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

[0035]

[0036] Data Description

[0037] Leakage test: Under a constant pressure of 2MPa, the fluid leakage per unit time is measured by a flow meter. In this invention, the O-ring rubber seal (15) at the inner end of the threaded pipe is compressed and fills the thread gap, which, combined with the initial seal of the threaded connection, significantly reduces the leakage.

[0038] Loosening torque after vibration: After 10 hours of continuous vibration at a frequency of 100Hz, the torque at which the connection begins to loosen is measured using a torque wrench. The mechanical locking structure (locking bolt 5 and nut 6 passing through the first and second locking outer rings) enhances the connection rigidity through axial tensile force, effectively resisting loosening caused by vibration.

[0039] Fatigue life test: The number of cycles tested under 0-3MPa cyclic pressure until leakage occurs. The one-piece molded structure (such as the smooth transition between connector tube 7 and threaded connector cover) reduces stress concentration, and the triple locking design extends fatigue resistance.

[0040] Data Validity Statement

[0041] 1. Testing standards: Leakage rate refers to GB / T12716-2011 "60° Sealed Pipe Threads", and vibration test follows ISO16750-3:2007 "Environmental conditions and tests for electrical and electronic equipment of road vehicles".

[0042] 2. Sample size: 10 samples are used in each test group, and the average value is taken to reduce the error. The data is certified by a third-party testing agency.

[0043] Structural relevance: The data improvement directly corresponds to the triple design of "threaded connection + elastic seal + mechanical locking" in the document - the elastic compensation of the rubber sealing ring (solves dynamic leakage), the mechanical reinforcement of the locking bolt (solves vibration loosening), and the one-piece molding reduces splicing gaps (improves fatigue life), which is in line with the actual engineering logic.

[0044] The present invention comprises: 1. Device body; 2. Pipe joint device; 3. First connecting pipe device; 4. Second connecting pipe device; 5. Locking bolt; 6. Locking nut; 7. Joint pipe; 8. First threaded joint cover; 9. Second threaded joint cover; 10. First locking outer ring; 11. Locking hole; 12. Main pipe body; 13. Second locking outer ring; 14. Threaded pipe; 15. Rubber sealing ring body. All components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. The problem solved by this invention is that existing pipe joints, after being connected to pipelines, are prone to loosening at the connection point after prolonged use, leading to leakage and affecting use. This invention, through the combination of the above components, provides triple protection through threaded connection, elastic sealing, and mechanical locking, significantly improving the stability, sealing, and durability of the pipeline system.

[0045] 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 exemplary 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.

[0046] 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. An extended pipe fitting, characterized in that: The device includes a device body (1), which includes a pipe fitting device (2), a first connecting pipe device (3), a second connecting pipe device (4), a locking bolt (5), and a locking nut (6). The first connecting pipe device (3) is threadedly installed on the left end of the pipe fitting device (2), and the second connecting pipe device (4) is threadedly installed on the right end of the pipe fitting device (2). The pipe fitting device (2) includes a fitting pipe (7), a first threaded fitting cover (8), and a second threaded fitting cover (9). The fitting pipe (7), the first threaded fitting cover (8), and the second threaded fitting cover (9) are smoothly transitioned and integrally formed. The first threaded fitting cover (8) is located at the left end of the fitting pipe (7), and the second threaded fitting cover (9) is located at the right end of the fitting pipe (7). Both the first threaded fitting cover (8) and the second threaded fitting cover (9) are cylindrical and have a through-type structure inside. The outer surface of the first threaded fitting cover (8) and the second threaded fitting cover (9) is provided with a first locking outer ring (10). The first locking outer ring (10) is circular. The surface of the first locking outer ring (10) is provided with two sets of locking holes (11) distributed in an annular equidistant manner.

2. The extended pipe fitting according to claim 1, characterized in that: Both the first connecting pipe device (3) and the second connecting pipe device (4) include a main pipe body (12), a second locking outer ring (13), and a threaded pipe (14). The main pipe body (12), the second locking outer ring (13), and the threaded pipe (14) are smoothly transitioned and integrally formed. The threaded pipe (14) is located at the inner end of the main pipe body (12), and the second locking outer ring (13) is located on the surface of the main pipe body (12). The surface of the second locking outer ring (13) is provided with two sets of locking holes (11) distributed in an annular equidistant manner.

3. The extended pipe fitting according to claim 2, characterized in that: A rubber sealing ring (15) is attached to the inner end of the threaded pipe (14), and the rubber sealing ring (15) has an O-shaped structure.

4. An extended pipe fitting according to claim 2, characterized in that: The locking bolt (5) passes between the first locking outer ring (10) and the second locking outer ring (13), and the locking nut (6) is installed on the locking bolt (5).

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