Screw-in type pipeline connector

Abstract

The utility model discloses a screw-in type pipeline connector, which relates to the technical field of pipeline connectors, and comprises a connector, the connector comprises a male connecting end and a female connecting end, the other end of the male connecting end and the other end of the female connecting end are fixedly connected with movable pipe ends, the other ends of the movable pipe ends are fixedly connected with buffer pipe ends, and the buffer pipe ends are fixedly connected with the male connecting end and the female connecting end. The other ends of the buffering pipe ends at the two ends are fixedly connected with threaded connecting ends. According to the connector provided by the utility model, on the basis of buffering fluid and reinforcing a threaded connection part, sealing is enhanced to prevent the threads at the connection part from being corroded, so that the problems that the threads are loosened when the conventional screw-in type pipeline connector is faced with fluid impact force during use; and screw thread corrosion is caused by internal corrosive medium erosion and external humid environment influence, so that normal use, maintenance and replacement are influenced.

Description

Technical Field

[0001] This utility model relates to the field of pipe connector technology, specifically to a screw-in pipe connector. Background Technology

[0002] Screw-in pipe connectors are widely used in liquid and gas pipeline connection scenarios due to their advantages such as convenient installation and detachability. Screw-in pipe connectors can achieve sealed connections with pipes of different materials by directly connecting metal pipes with threads, fixing rubber hoses with threaded pressure rings, and connecting plastic pipes with threads and adhesive or heat fusion.

[0003] Existing screw-in pipe connectors mostly use metal pipes when conveying liquids or gases. The impact force generated by the fluid flow inside the metal pipe, especially under conditions such as fluid start-up and shutdown, and pressure changes, will create high-frequency vibrations and periodic stresses on the threaded connection of the connector. This stress can easily lead to the attenuation of the preload between the threads, resulting in loosening of the threaded connection. Furthermore, the threads at the connection are in long-term contact with the liquid or gas being conveyed inside. If the conveyed medium is corrosive, it will directly corrode the thread metal material, causing rust spots, pits, or even breakage on the thread surface. When used outdoors or in humid environments, the connector threads are also affected by external rainwater and moisture, resulting in electrochemical corrosion. After the threads are corroded, they are prone to stripping and chipping during tightening or disassembly, which seriously affects the normal use of the connector and the maintenance and replacement of the pipeline system. Utility Model Content

[0004] In view of the problems existing in the current screw-in pipe connector, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a screw-in pipe connector that solves the problems of existing screw-in pipe connectors, which are prone to thread loosening due to fluid impact during use, and thread corrosion caused by internal corrosive media and external humid environment, thus affecting normal use, maintenance and replacement.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A screw-in pipe connector includes a connector, the connector including a male connection end and a female connection end, the other end of the male connection end and the female connection end being fixedly connected to a movable tube end, the other end of the movable tube ends being fixedly connected to a buffer tube end, and the other end of the buffer tube ends being fixedly connected to a threaded connection end.

[0008] The male connector includes a main connector sleeve, with a stepped insertion head fixedly connected to the inner wall of the main connector sleeve and a limit ring fixedly connected to the outer wall of the main connector sleeve. The female connector includes a secondary connector sleeve, with a stepped insertion sleeve fixedly connected to the inner wall of the secondary connector sleeve and a limit sleeve slidably connected to the outer wall of the secondary connector sleeve. The outer wall of the secondary connector sleeve is threadedly connected to the inner wall of the main connector sleeve. The stepped insertion head is inserted into the stepped insertion sleeve. The inner wall of the limit sleeve is threadedly connected to the outer wall of the main connector sleeve. Both ends of the limit sleeve and the limit ring are provided with a limit locking mechanism. A sealing mechanism is provided between the male connector and the female connector.

[0009] Preferably, the limiting locking mechanism includes a support block, a threaded limiting port, and a limiting bolt. The two end side walls of the limiting sleeve are fixedly connected to the support block, and the two end side walls of the limiting ring are provided with threaded limiting ports. The two end support blocks are inserted into the limiting bolts through the openings, and the other end of the two end limiting bolts is threadedly connected to the corresponding threaded limiting ports.

[0010] Preferably, the sealing mechanism includes a sealing ring and a sealing groove. The side walls of the stepped insertion head and the limiting ring are fixedly connected with sealing rings. The side walls of the stepped insertion sleeve and the limiting sleeve are provided with sealing grooves. The sealing grooves at both ends engage with the corresponding sealing rings.

[0011] Preferably, the movable tube end includes a corrosion-resistant hose, a stainless steel corrugated hose, a thermal insulation aerogel felt layer, and a high-temperature resistant silicone rubber fiberglass cloth layer. The outer wall of the corrosion-resistant hose is fitted with a stainless steel corrugated hose, and a thermal insulation aerogel felt layer is fixedly connected between the corrosion-resistant hose and the stainless steel corrugated hose. The inner wall of the corrosion-resistant hose is fixedly connected with a high-temperature resistant silicone rubber fiberglass cloth layer.

[0012] Furthermore, the buffer tube end is a tube body, and a spiral buffer cavity is provided.

[0013] Preferably, the surface of the connector is provided with a zinc-plated coating.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] 1. This utility model utilizes the male and female connecting ends to achieve basic fixation through threads. The stepped insertion head and the insertion sleeve increase the contact area, improving positioning accuracy and connection stability. The limiting sleeve engages with the main connecting sleeve through threads, and a locking mechanism (support block, limiting bolt) applies locking force from the side to restrict the relative rotation of the male and female ends. The double anti-loosening design effectively resists the loosening of threads caused by fluid impact, ensuring long-term connection stability.

[0016] 2. This utility model utilizes a sealing mechanism to form multiple sealing barriers at the connection point through the engagement of a sealing ring and a sealing groove. This prevents fluid leakage while isolating external humid air and corrosive gases, protecting the internal threads from corrosion. The zinc-plated coating on the connector surface provides dual protection against external corrosion through physical isolation and sacrificial anode protection. Even if the coating is partially damaged, it can still continuously protect the substrate, significantly improving corrosion resistance and extending the connector's service life.

[0017] 3. This utility model integrates a corrosion-resistant hose, a stainless steel corrugated hose, a thermal insulation aerogel felt layer, and a high-temperature resistant silicone rubber fiberglass cloth layer at the movable pipe end. It can simultaneously resist media corrosion, withstand high temperatures, isolate heat transfer, and enhance pipeline flexibility, adapting to various complex working conditions such as corrosive, high-temperature, and low-temperature conditions. The spiral buffer cavity at the buffer pipe end disperses the impact force by changing the fluid path, reducing pressure fluctuations and vibration noise, protecting the connector and pipeline system, and improving operational stability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a front sectional view of the present invention;

[0021] Figure 3 This is a three-dimensional sectional view of the movable tube end of this utility model;

[0022] Figure 4 This is a partial perspective sectional view of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Connector; 2. Male connector; 3. Female connector; 4. Movable tube end; 5. Buffer tube end; 6. Threaded connector end; 7. Main connector sleeve; 8. Stepped insert head; 9. Limiting ring; 10. Secondary connector sleeve; 11. Stepped insert sleeve; 12. Limiting sleeve; 13. Support block; 14. Threaded limit port; 15. Limiting bolt; 16. Sealing ring; 17. Sealing groove; 18. Corrosion-resistant hose; 19. Stainless steel corrugated hose; 20. Thermal insulation aerogel felt layer; 21. High-temperature resistant silicone rubber fiberglass cloth layer; 22. Spiral buffer cavity. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model discloses a screw-in pipe connector.

[0027] This utility model provides, for example Figure 1-4 The screw-in type pipe connector shown includes a connector 1, which includes a male connection end 2 and a female connection end 3. The other end of both the male connection end 2 and the female connection end 3 is fixedly connected to a movable tube end 4. The other end of both movable tube ends 4 is fixedly connected to a buffer tube end 5. The other end of both buffer tube ends 5 is fixedly connected to a threaded connection end 6.

[0028] The male connection end 2 includes a main connection sleeve 7, with a stepped insertion head 8 fixedly connected to the inner wall of the main connection sleeve 7 and a limit ring 9 fixedly connected to the outer wall of the main connection sleeve 7. The female connection end 3 includes a secondary connection sleeve 10, with a stepped insertion sleeve 11 fixedly connected to the inner wall of the secondary connection sleeve 10 and a limit sleeve 12 slidably connected to the outer wall of the secondary connection sleeve 10. The outer wall of the secondary connection sleeve 10 is threadedly connected to the inner wall of the main connection sleeve 7. The stepped insertion head 8 is inserted into the stepped insertion sleeve 11. The inner wall of the limit sleeve 12 is threadedly connected to the outer wall of the main connection sleeve 7. Limit locking mechanisms are provided at both ends of the limit sleeve 12 and the limit ring 9. A sealing mechanism is provided between the male connection end 2 and the female connection end 3. The male connection end 2 and the female connection end 3 are connected by threads to achieve quick assembly. The movable pipe end 4 can absorb positional deviations during pipe installation and slight displacements during operation, preventing stress concentration. The buffer pipe end 5 can effectively alleviate fluid pressure. The design minimizes the direct force on the connector due to impact. The threaded connection end 6 facilitates docking with other pipe components. The overall structure is rationally designed, easy to install, and highly adaptable. The stepped insertion head 8 and stepped sleeve 11 increase the contact area and positioning accuracy of the male and female connection ends, improving connection stability. The auxiliary connection sleeve 10 and the main connection sleeve 7 are threaded together to form a basic fixation. The limiting sleeve 12, through its threaded engagement with the main connection sleeve 7 and combined with the limiting locking mechanism, effectively prevents the threads from loosening due to fluid impact. The sealing mechanism ensures the sealing of the connection, preventing fluid leakage and blocking the intrusion of external corrosive substances. This solves the problems of existing screw-in pipe connectors, which are prone to thread loosening due to fluid impact, internal corrosive media erosion, and external humid environments causing thread corrosion, thus affecting normal use, maintenance, and replacement.

[0029] In order to securely fasten the limiting sleeve 12 and the limiting ring 9, such as Figure 1 and 2As shown, the limiting locking mechanism includes a support block 13, a threaded limiting port 14, and a limiting bolt 15. The support blocks 13 are fixedly connected to both ends of the limiting sleeve 12. The threaded limiting ports 14 are opened on both ends of the limiting ring 9. The limiting bolts 15 are inserted into the support blocks 13 through the openings. The other end of the limiting bolts 15 is threadedly connected to the corresponding threaded limiting ports 14. By using the limiting bolts 15 to pass through the support blocks 13 and threadedly connect to the threaded limiting ports 14, the limiting sleeve 12 and the limiting ring 9 are tightly fixed. A locking force is applied from the side to restrict the relative rotation between the male connection end 2 and the female connection end 3, effectively resisting the loosening of the threads caused by fluid impact and ensuring the long-term stable operation of the connector.

[0030] To protect threaded connections from corrosion, such as Figure 2 and 4 As shown, the sealing mechanism includes a sealing ring 16 and a sealing groove 17. The side walls of the stepped insertion head 8 and the limiting ring 9 are fixedly connected with sealing rings 16. The side walls of the stepped insertion sleeve 11 and the limiting sleeve 12 are provided with sealing grooves 17. The sealing grooves 17 at both ends engage with the corresponding sealing rings 16. By utilizing the engagement of the sealing rings 16 and the sealing grooves 17, multiple sealing barriers are formed between the male and female connection ends, effectively preventing fluid leakage. At the same time, the sealing structure can prevent external humid air and corrosive gases from entering the connector, protecting the threaded connection parts from corrosion and extending the service life of the connector.

[0031] In order to enhance protection while allowing for movement, such as Figure 1-3 As shown, the movable pipe end 4 includes a corrosion-resistant flexible hose 18, a stainless steel corrugated flexible hose 19, a thermal insulation aerogel felt layer 20, and a high-temperature resistant silicone rubber fiberglass cloth layer 21. The outer wall of the corrosion-resistant flexible hose 18 is fitted with the stainless steel corrugated flexible hose 19. The thermal insulation aerogel felt layer 20 is fixedly connected between the corrosion-resistant flexible hose 18 and the stainless steel corrugated flexible hose 19. The inner wall of the corrosion-resistant flexible hose 18 is fixedly connected with the high-temperature resistant silicone rubber fiberglass cloth layer 21. The corrosion-resistant flexible hose 18 can resist the erosion of corrosive media in the pipeline and extend the service life of the pipeline. The stainless steel corrugated flexible hose 19 provides structural support and anti-deformation ability, and enhances the flexibility of the pipeline. The thermal insulation aerogel felt layer 20 effectively blocks heat transfer, reduces heat loss of the medium, or prevents condensation of low-temperature media. The high-temperature resistant silicone rubber fiberglass cloth layer 21 can withstand high-temperature environments and prevent pipeline damage due to high temperature, making the connector suitable for various complex working conditions.

[0032] To disperse the fluid impact force, such as Figure 1 and 2As shown, the buffer tube end 5 is a tube body and has a spiral buffer cavity 22. The spiral buffer cavity 22 is used to change the flow path of the fluid. By extending the residence time of the fluid in the tube and changing the flow direction, the fluid impact force is effectively dispersed, the pressure fluctuation of the fluid on the connector and pipeline system is reduced, vibration and noise are reduced, the connector and pipeline components are protected, and the system operation stability is improved.

[0033] To continuously protect the connector body, such as Figure 1-4 As shown, the surface of connector 1 is provided with a zinc-plated coating. The zinc-plated coating forms a dense protective film on the surface of the connector, which isolates external humid air, acid and alkali substances and other corrosive media, and prevents the metal substrate from oxidizing and rusting. Even if the coating is partially damaged, the zinc layer can preferentially corrode itself through the principle of sacrificial anode protection, and continuously protect the connector body.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A screw-in pipe connector comprising a connector (1), characterized in that The connector (1) includes a male connection end (2) and a female connection end (3). The other end of the male connection end (2) and the female connection end (3) are fixedly connected to a movable tube end (4). The other end of the movable tube end (4) at both ends is fixedly connected to a buffer tube end (5). The other end of the buffer tube end (5) at both ends is fixedly connected to a threaded connection end (6). The male connector (2) includes a main connector sleeve (7), the inner wall of which is fixedly connected to a stepped insertion head (8), and the outer wall of which is fixedly connected to a limiting ring (9). The female connector (3) includes a secondary connector sleeve (10), the inner wall of which is fixedly connected to a stepped insertion sleeve (11), and the outer wall of which is slidably connected to a limiting sleeve (12). The outer wall of the secondary connector sleeve (10) is threadedly connected to the inner wall of the main connector sleeve (7). The stepped insertion head (8) is inserted into the stepped insertion sleeve (11). The inner wall of the limiting sleeve (12) is threadedly connected to the outer wall of the main connector sleeve (7). Both ends of the limiting sleeve (12) and the limiting ring (9) are provided with limiting locking mechanisms. A sealing mechanism is provided between the male connector (2) and the female connector (3).

2. A screw-type pipe coupling according to claim 1, wherein, The limiting locking mechanism includes a support block (13), a threaded limiting port (14), and a limiting bolt (15). The two end side walls of the limiting sleeve (12) are fixedly connected to the support block (13). The two end side walls of the limiting ring (9) are provided with threaded limiting ports (14). The two end support blocks (13) are inserted into the limiting bolts (15) through the openings. The other end of the two end limiting bolts (15) is threadedly connected to the corresponding threaded limiting port (14).

3. A screw-type pipe coupling according to claim 1, wherein, The sealing mechanism includes a sealing ring (16) and a sealing groove (17). The side walls of the stepped insertion head (8) and the limiting ring (9) are fixedly connected with sealing rings (16). The side walls of the stepped insertion sleeve (11) and the limiting sleeve (12) are provided with sealing grooves (17). The sealing grooves (17) at both ends are engaged with the corresponding sealing rings (16).

4. A screw-type pipe coupling according to claim 1, wherein, The movable tube end (4) includes a corrosion-resistant hose (18), a stainless steel corrugated hose (19), a thermal insulation aerogel felt layer (20), and a high-temperature resistant silicone rubber fiberglass cloth layer (21). The outer wall of the corrosion-resistant hose (18) is fitted with a stainless steel corrugated hose (19). The thermal insulation aerogel felt layer (20) is fixedly connected between the corrosion-resistant hose (18) and the stainless steel corrugated hose (19). The inner wall of the corrosion-resistant hose (18) is fixedly connected with a high-temperature resistant silicone rubber fiberglass cloth layer (21).

5. A screw-type pipe coupling according to claim 1, wherein, The buffer tube end (5) is a tube body and has a spiral buffer cavity (22).

6. A screw-type pipe coupling according to claim 1, wherein, The surface of the connector (1) is provided with a zinc coating.

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