Creep-resistant socket-and-spigot type connecting piece of PPH homopolymerization pipeline for high-temperature working condition

Abstract

The utility model relates to the technical field of connecting pieces, discloses a creep-resistant socket-and-spigot type connecting piece of a PPH homopolymerization pipeline for a high-temperature working condition, and solves the problems that the PPH homopolymerization pipeline is easy to creep due to the fact that an existing socket-and-spigot type connecting piece cannot effectively protect a joint of the PPH homopolymerization pipeline under the high-temperature working condition, so that a gap is generated, and leakage is caused. The device comprises a first pipeline, a mounting ring is fixedly mounted on the surface of one end of the first pipeline, a second pipeline is arranged on one side of the mounting ring, four extrusion pads are annularly and fixedly mounted on one side of the second pipeline at equal intervals, a slot is formed in the end, close to the second pipeline, of the first pipeline, and a plug is fixedly mounted at the end, close to the first pipeline, of the second pipeline; the plug is fixedly mounted in the slot; the socket type connecting piece can effectively protect the PPH homopolymerization pipeline joint under the high-temperature working condition, creep deformation of the PPH homopolymerization pipeline joint is avoided, meanwhile, the sealing effect is improved, and medium leakage is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of connector technology, specifically an anti-creep socket connector for PPH homopolymer pipes used in high-temperature conditions. Background Technology

[0002] The creep-resistant socket-type connector for PPH homopolymer pipes in high-temperature applications is a specialized connection device developed to address the creep characteristics of PPH (homogeneous polypropylene) pipes under high-temperature conditions. This connector features a unique socket structure design that ensures a tight fit between the pipe socket and spigot. Its core advantage lies in the excellent creep resistance of modified PPH material, which maintains dimensional stability under high-temperature conditions, effectively reducing the risk of deformation caused by long-term pressure. This connector is widely used in corrosive media transport systems in industries such as chemical, pharmaceutical, and food processing, as well as in hot water supply, heating systems, and industrial steam pipelines in buildings. It is particularly suitable for scenarios with stringent requirements for high-temperature stability and creep resistance, ensuring the long-term safe and reliable operation of the pipeline system.

[0003] Existing socket-type connectors cannot effectively protect the joints of PPH homopolymer pipes under high-temperature conditions, which makes the PPH homopolymer pipes prone to creep, resulting in gaps and leaks. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides an anti-creep socket connector for PPH homopolymer pipes under high temperature conditions. It effectively solves the problem that the existing socket connectors cannot effectively protect the joints of PPH homopolymer pipes under high temperature conditions, which makes the PPH homopolymer pipes prone to creep, thereby creating gaps and causing leakage.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a creep-resistant socket connector for PPH homopolymer pipes used in high-temperature conditions, comprising a first pipe, an installation ring fixedly installed on one end surface of the first pipe, a second pipe provided on one side of the installation ring, four compression pads fixedly installed circumferentially at equal intervals on one side of the second pipe, a slot opened at one end of the first pipe near the second pipe, a plug fixedly installed at one end of the second pipe near the first pipe, the plug being fixedly installed inside the slot, a ring groove A opened inside one end of the first pipe, a ring groove B opened inside one end of the second pipe, a first heat insulation ring fixedly installed inside the ring groove A, and a second heat insulation ring fixedly installed inside the ring groove B, both the first and second heat insulation rings being made of aerogel;

[0006] A sealing gasket is fixedly installed at one end of the second pipe, located between the first and second pipes. The circumferential surface of the mounting ring has four openings, and a clamping rod is rotatably installed inside each of the four openings via a rotating shaft. A threaded sleeve is connected to the surface of the first pipe via an external thread. One end of the threaded sleeve is equipped with a transmission assembly, which is connected to the four clamping rods. When the threaded sleeve rotates, the power is output to the four clamping rods through the transmission assembly, causing the four clamping rods to rotate and squeeze the four compression pads to press the second pipe tightly against the end of the first pipe.

[0007] Preferably, the transmission assembly includes an annular groove, which is formed at one end of the threaded sleeve. A limiting slip ring is slidably installed inside the annular groove. A connecting ring is fixedly installed on one side of the limiting slip ring, and four pushing heads are fixedly installed at equal intervals in a ring on one side of the connecting ring.

[0008] Preferably, one side of each of the four push heads is closely attached to a contact ball, the surface of each contact ball is fixedly connected to the clamping rod, and a spring is fixedly installed at one end of each clamping rod, and one end of each of the four springs is fixedly connected to the first pipe.

[0009] Preferably, four limiting sleeves are fixedly installed at equal intervals on the circumference of the connecting ring, and a limiting slide rod is inserted into the interior of each of the four limiting slide sleeves. One end of each of the four limiting slide rods is fixedly connected to the mounting ring.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: When connecting, the operator inserts the plug on the second pipe into the slot on the first pipe and makes the sealing gasket fit tightly against the first pipe. The first and second heat insulation rings can effectively insulate the heat, thereby protecting the joint and preventing creep at the joint. Then the operator rotates the threaded sleeve, and the threaded sleeve can be rotated and moved to the side of the mounting ring through the engagement of the external thread.

[0011] When the threaded sleeve rotates, it pushes the connecting ring to move. Simultaneously, through the engagement of the annular groove, the threaded sleeve rotates along the limiting slip ring. Thus, the threaded sleeve only pushes the connecting ring to move without causing it to rotate. As the connecting ring moves, it causes the four limiting slip sleeves to slide on the surfaces of the limiting slip rods, increasing the stability of the connecting ring's movement. When the connecting ring is pushed, it causes the four pushing heads to push the four contact balls, causing the four contact balls to drive the four clamping rods to rotate along the four shafts and stretch the springs. This gives the four clamping rods the ability to elastically return to their original position. When the four clamping rods rotate, they compress the four compression pads, pressing the second pipe tightly against the end of the first pipe, thereby improving the sealing effect between the joints and preventing media leakage caused by creep. This socket-type connector effectively protects the PPH homopolymer pipe joint under high-temperature conditions, preventing creep in the PPH homopolymer pipe joint and simultaneously improving the sealing effect to avoid media leakage. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] In the attached diagram:

[0014] Figure 1 This is a schematic diagram of the anti-creep socket connector structure for PPH homopolymer pipes used in high-temperature conditions according to this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of the first and second pipes of this utility model. Figure 1 ;

[0016] Figure 3 This is a schematic diagram of the internal structure of the first and second pipes of this utility model. Figure 2 ;

[0017] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0018] In the diagram: 1. First pipe; 2. Mounting ring; 3. Second pipe; 4. Ring groove A; 5. Ring groove B; 6. First heat insulation ring; 7. Second heat insulation ring; 8. Plug; 9. Slot; 10. Clamping rod; 11. Threaded sleeve; 12. External thread; 13. Annular groove; 14. Limiting slip ring; 15. Connecting ring; 16. Push head; 17. Contact ball; 18. Spring; 19. Rotating shaft; 20. Extrusion pad; 21. Limiting sleeve; 22. Limiting rod; 23. Sealing gasket. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] Depend on Figures 1 to 4The present invention includes a first pipe 1, an installation ring 2 fixedly installed on one end surface of the first pipe 1, a second pipe 3 provided on one side of the installation ring 2, four compression pads 20 fixedly installed circumferentially at equal intervals on one side of the second pipe 3, a slot 9 opened at one end of the first pipe 1 near the second pipe 3, a plug 8 fixedly installed at one end of the second pipe 3 near the first pipe 1, the plug 8 fixedly installed inside the slot 9, a ring groove A4 opened inside one end of the first pipe 1, a ring groove B5 opened inside one end of the second pipe 3, a first heat insulation ring 6 fixedly installed inside the ring groove A4, and a second heat insulation ring 7 fixedly installed inside the ring groove B5. Both the first heat insulation ring 6 and the second heat insulation ring 7 are made of aerogel.

[0021] A sealing gasket 23 is fixedly installed at one end of the second pipe 3 and between the first pipe 1 and the second pipe 3. The circumferential surface of the mounting ring 2 has four openings. Each of the four openings is rotatably mounted with a clamping rod 10 through a rotating shaft 19. A threaded sleeve 11 is threadedly connected to the surface of the first pipe 1 through an external thread 12. One end of the threaded sleeve 11 is provided with a transmission component. The transmission component is connected to the four clamping rods 10. When the threaded sleeve 11 rotates, it outputs power to the four clamping rods 10 through the transmission component, causing the four clamping rods 10 to rotate and squeeze the four compression pads 20 to press the second pipe 3 tightly against the end of the first pipe 1.

[0022] During connection, the operator inserts the plug 8 on the second pipe 3 into the slot 9 on the first pipe 1 and ensures that the sealing gasket 23 is pressed tightly against the first pipe 1. The first heat insulation ring 6 and the second heat insulation ring 7 effectively insulate the joint, thus protecting it and preventing creep. The operator then rotates the threaded sleeve 11. The external thread 12 engages with the threaded sleeve 11, causing it to rotate and move towards the side of the mounting ring 2. This rotation of the threaded sleeve 11 drives the transmission assembly, which in turn rotates the four clamping rods 10 along the four shafts 19 and stretches the springs 18. This gives the four clamping rods 10 the ability to elastically return to their original position. The rotation of the four clamping rods 10 compresses the four compression pads 20, pressing the second pipe 3 tightly against the end of the first pipe 1, thereby improving the sealing effect between the joints and preventing media leakage caused by creep. This socket-type connector effectively protects the PPH homopolymer pipe joint under high-temperature conditions, preventing creep and improving the sealing effect to avoid media leakage.

[0023] The transmission assembly includes an annular groove 13, which is formed at one end of the threaded sleeve 11. A limiting slip ring 14 is slidably installed inside the annular groove 13. A connecting ring 15 is fixedly installed on one side of the limiting slip ring 14. Four pushing heads 16 are fixedly installed at equal intervals on one side of the connecting ring 15. A contact ball 17 is tightly attached to one side of the inclined surface of each of the four pushing heads 16. The surface of each contact ball 17 is fixedly connected to the clamping rod 10. A spring 18 is fixedly installed at one end of the lower part of each clamping rod 10. One end of each of the four springs 18 is fixedly connected to the first pipe 1.

[0024] Four limiting sleeves 21 are fixedly installed at equal intervals on the circumference of the connecting ring 15. Each of the four limiting sleeves 21 has a limiting rod 22 inserted inside it, and one end of each of the four limiting rods 22 is fixedly connected to the mounting ring 2.

[0025] When the threaded sleeve 11 rotates and moves, it pushes the connecting ring 15 to move. At the same time, through the cooperation of the annular sliding groove 13, the threaded sleeve 11 rotates along the limiting sliding ring 14. Thus, the threaded sleeve 11 only pushes the connecting ring 15 to move without causing the connecting ring 15 to rotate. When the connecting ring 15 moves, it causes the four limiting sliding sleeves 21 to slide on the surface of the limiting sliding rod 22, thereby increasing the stability of the connecting ring 15 when it moves. When the connecting ring 15 is pushed and moved, it causes the four pushing heads 16 to push the four contact balls 17.

[0026] The four contact balls 17 drive the four clamping rods 10 to rotate along the four rotating shafts 19 and stretch the springs 18, thereby giving the four clamping rods 10 the ability to elastically return to their original position. When the four clamping rods 10 rotate, they will squeeze the four compression pads 20 to press the second pipe 3 tightly against the end of the first pipe 1, thereby improving the sealing effect between the joints and avoiding media leakage caused by creep.

Claims

1. A creep resistant socket joint for PPH homopolymer pipe for high temperature service, comprising a first pipe (1), characterised in that: One end surface of the first pipeline (1) is fixedly provided with a mounting ring (2), one side of the mounting ring (2) is provided with a second pipeline (3), four extrusion pads (20) are fixedly arranged on one side of the second pipeline (3) in a ring shape and at equal distances, one end of the first pipeline (1) close to the second pipeline (3) is provided with a slot (9), one end of the second pipeline (3) close to the first pipeline (1) is fixedly provided with a plug (8), the plug (8) is fixedly arranged in the slot (9), a ring groove A (4) is formed in the inside of one end of the first pipeline (1), a ring groove B (5) is formed in the inside of one end of the second pipeline (3), a first heat insulation ring (6) is fixedly arranged in the inside of the ring groove A (4), a second heat insulation ring (7) is fixedly arranged in the inside of the ring groove B (5), the first heat insulation ring (6) and the second heat insulation ring (7) are both made of aerogel; One end of the second pipeline (3) and between the first pipeline (1) and the second pipeline (3) is fixedly provided with a sealing pad (23), four openings are formed in the circumferential surface of the mounting ring (2), four compression rods (10) are rotatably arranged in the four openings through rotating shafts (19), a threaded sleeve (11) is threadedly connected to the surface of the first pipeline (1) through external threads (12), one end of the threaded sleeve (11) is provided with a transmission assembly, the transmission assembly is in transmission connection with the four compression rods (10), when the threaded sleeve (11) rotates, the transmission assembly outputs power to the four compression rods (10), so that the four compression rods (10) rotate and extrude the four extrusion pads (20) to compress the second pipeline (3) on the end of the first pipeline (1).

2. A creep resistant socket joint for PPH homopolymer pipe for high temperature service according to claim 1, characterized in that: The transmission assembly comprises a ring-shaped sliding groove (13), the ring-shaped sliding groove (13) is formed in one end of the threaded sleeve (11), a limiting sliding ring (14) is slidably arranged in the inside of the ring-shaped sliding groove (13), a connecting ring (15) is fixedly arranged on one side of the limiting sliding ring (14), four push heads (16) are fixedly arranged on one side of the connecting ring (15) in a ring shape and at equal distances.

3. A creep resistant socket joint for PPH homopolymer pipe for high temperature service according to claim 2, characterized in that: One side of each of the four push heads (16) is tightly provided with a contact ball (17), the surface of each contact ball (17) is fixedly connected with the compression rod (10), one end of the lower part of each compression rod (10) is fixedly provided with a spring (18), one end of each of the four springs (18) is fixedly connected with the first pipeline (1).

4. A creep resistant socket joint for PPH homopolymer pipe for high temperature service according to claim 3, characterized in that: The circumferential surface of the connecting ring (15) is fixedly provided with four limiting sliding sleeves (21) in a ring shape and at equal distances, a limiting sliding rod (22) is inserted into each of the four limiting sliding sleeves (21), one end of each of the four limiting sliding rods (22) is fixedly connected with the mounting ring (2).

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