Corrugated bell and spigot joint for electrical conduits

Abstract

The utility model relates to the technical field of pipeline joint, concretely to a corrugated flared socket joint of electric power pipeline, including main pipeline, the main pipeline is connected with the expansion corrugated pipe through the connecting plug outside, the connecting plug includes locking piece, the resistance nut, the resistance sleeve and the screw cap, the locking piece includes sleeve and a plurality of movable claws, the movable claw is radial activity on the sleeve, through the resistance nut can make the main pipeline wall be clamped between movable claw and resistance nut by screwing. The corrugated flared socket joint of electric power pipeline, through the structure cooperation of connecting plug, locking piece, resistance nut, resistance sleeve and screw cap etc.

Description

Technical Field

[0001] This utility model relates to the field of pipe joint technology, specifically to a corrugated flared socket joint for power pipelines. Background Technology

[0002] Power pipelines are important facilities used in power systems for laying and protecting cable lines. They are mostly made of corrosion-resistant, high-strength materials, possess good insulation and compressive strength, and can effectively resist damage to cables from the external environment, ensuring stable power transmission.

[0003] Utility model patent CN219918305U discloses a non-detachable electrical conduit connector. This connector includes a connector body, with connectors fixedly connected to the outer sides of both ends. Each connector has a circular opening at its upper and lower ends, and a protective mechanism is provided at the opening on the outer side of the connector. Rotating slots are provided at the upper and lower ends of both sides inside the connector body, with locking blocks within the slots. The locking blocks have grooves inside, and anti-detachment mechanisms are provided within the grooves. The same connector is fixedly connected between corresponding locking blocks. When using this connector, no tools are needed during the installation of the first and second conduits to the connector body, making the entire operation simple and convenient. Furthermore, the connection between the first and second conduits and the connector body provides high stability and prevents detachment.

[0004] This anti-detachment direct connector for power conduits is mainly used for the straight connection of two conduits. Its structure relies on the cooperation of the locking block and rotating slot, and the top rod and positioning port to achieve anti-detachment. It is only suitable for the connection between main conduits and lacks a structural design for connecting branch corrugated pipes in the middle of the main conduit. Furthermore, the pipe needs to be rotated during connection to make the locking block cooperate with the positioning port. For scenarios where branch pipes are connected to the side wall of the main conduit, it is difficult to achieve stable installation in this way, and it cannot effectively seal the branch connection part, which has connection limitations. In view of this, we propose a corrugated flared socket joint for power conduits. Utility Model Content

[0005] The purpose of this invention is to provide a corrugated flared socket joint for power pipelines, in order to solve the problem mentioned in the background art of lacking a structural design for connecting branch corrugated pipes in the middle of the main pipeline.

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

[0007] A corrugated flared socket joint for power pipelines includes a main pipeline, an expanded corrugated pipe connected to the outside of the main pipeline, the expanded corrugated pipe being connected to the main pipeline via a connector, the connector including a locking member extending into the main pipeline, a locking nut threaded to the outer end of the locking member, a retaining sleeve threaded to the inner side of the locking member, and a swivel cap threaded to the outer end of the retaining sleeve, the end of the expanded corrugated pipe being squeezed between the swivel cap and the outer end of the retaining sleeve;

[0008] The locking component includes a sleeve with a hollow cylindrical structure and several movable claws slidably connected to the inner end of the sleeve. Several movable cavities are formed in a ring at equal intervals around the axis of the sleeve on the outer circumferential surface of the inner end of the sleeve. Inserted pins are inserted into the movable cavities along the axial direction of the sleeve. The movable claws are sleeved in the movable cavities and can move radially along the movable cavities on the sleeve. The movable claws have waist-shaped grooves, through which the inserted pins pass. The inserted pins limit the radial movement of the movable claws. A pair of guide plates are fixed on the outer end face of the movable claws. The outer end face of the guide plates is inclined. When the abutment sleeve is tightened in the sleeve, the inner end of the abutment sleeve abuts against the inclined surface of the guide plate, causing the movable claws to extend outward along the movable cavities.

[0009] The main pipe has a through hole for installing the sleeve. The movable claw, which is in an extended state, is located inside the main pipe. By tightening the clamping nut, the wall of the main pipe can be clamped between the movable claw and the clamping nut.

[0010] Preferably, a plurality of movable grooves are formed on the outer peripheral surface of the inner end of the sleeve. The number of movable grooves is equal to the total number of guide plates and their positions correspond one-to-one. The movable grooves provide the guide plates with movement space.

[0011] In this design, the corresponding design of the movable slot and the guide plate ensures that the guide plate moves radially without obstruction, allowing the movable claw to extend or retract smoothly.

[0012] Preferably, a return spring is fitted inside the waist-shaped groove, and a sleeve hole is opened on the inner surface of the insertion post. The end of the return spring is fitted into the sleeve hole, and under the elastic force of the return spring, the movable claw retracts into the sleeve.

[0013] In this configuration, the return spring engages with the sleeve hole to provide reset power for the movable claw, facilitating preparation before connector installation and operation during disassembly.

[0014] Preferably, a first external thread is formed on the outer circumferential surface of the outer end of the sleeve, and the clamping nut is threadedly connected to the sleeve through the first external thread;

[0015] In this configuration, the first external thread engages with the thread of the clamping nut to achieve a detachable connection between the clamping nut and the sleeve, and the main pipe wall is clamped by tightening the clamping nut.

[0016] Preferably, a fixing prism is fixed on the outer peripheral surface of the abutment tube, and the fixing prism is used to rotate the abutment tube;

[0017] In this setup, the fixed prism provides a point of leverage for the rotating sleeve, allowing operators to precisely adjust the position of the sleeve using tools and drive the movable claw to extend.

[0018] Preferably, the outer surface of the sleeve located at the rear end of the fixed prism is provided with a second external thread, and the inner surface of the outer end of the sleeve is provided with an internal thread, wherein the thread shape of the second external thread matches that of the internal thread.

[0019] In this configuration, the matching design of the second external thread and the internal thread allows the sleeve to move stably along the sleeve axis, converting the rotation into an axial force that pushes the movable claw.

[0020] Preferably, a third external thread is provided on the outer peripheral surface of the outer end of the sleeve, and the screw cap is threadedly connected to the sleeve through the third external thread;

[0021] In this configuration, the third external thread ensures a secure connection between the nut and the sleeve. Tightening the nut compresses and expands the end of the bellows, achieving a sealed connection.

[0022] Preferably, a sealing ring is provided between the tightening nut and the outer wall of the main pipe. The sealing ring is an annular rubber sealing ring with an O-shaped cross-section. By tightening the tightening nut, the sealing ring can be pressed against the outer surface of the main pipe by the tightening nut.

[0023] In this setup, the O-ring deforms and fits the main pipeline under the pressure of the tightening nut, effectively preventing media leakage from the connection and enhancing sealing performance.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] The corrugated flared socket joint for this power pipeline, through the cooperation of a connector, locking element, clamping nut, clamping sleeve, and screw cap, allows for convenient connection of an expanded corrugated pipe in the middle of the main pipeline. The design of the movable claw in the locking element allows the clamping sleeve to push out the movable claw when the clamping sleeve and screw cap are tightened. The clamping nut and movable claw clamp the pipe wall of the main pipeline, preventing the connector from falling off the main pipeline. This allows the expanded corrugated pipe to be easily connected to the main pipeline through the connector. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is an exploded view of the connector plug in this utility model;

[0028] Figure 3 This is an exploded view of the locking component in this utility model;

[0029] Figure 4 This is a cross-sectional view of the sleeve in this utility model;

[0030] Figure 5 This is a schematic diagram of the movable claw in this utility model;

[0031] The meanings of the labels in the diagram are as follows:

[0032] 100. Main pipeline;

[0033] 200. Expanded bellows;

[0034] 300. Connecting plug; 310. Locking element; 311. Sleeve; 3111. Movable cavity; 3112. Movable groove; 3113. Insert post; 3114. Sleeve hole; 3115. Internal thread; 3116. First external thread; 312. Movable claw; 3121. Waist-shaped groove; 3122. Return spring; 3123. Guide plate; 320. Clamping nut; 330. Clamping sleeve; 331. Fixed prism; 332. Second external thread; 333. Third external thread; 340. Screw cap; 350. Sealing ring. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0036] Please see Figures 1-5The corrugated flared socket joint for power pipelines includes a main pipeline 100, to which an expanded corrugated pipe 200 is connected. The expanded corrugated pipe 200 is connected to the main pipeline 100 via a connector 300. This structural design allows the expanded corrugated pipe 200 to be easily branched to the main pipeline 100. The connector 300 includes a locking member 310 extending into the main pipeline 100, a locking nut 320 threaded to the outer end of the locking member 310, a retaining sleeve 330 threaded to the inner side of the locking member 310, and a screw cap 340 threaded to the outer end of the retaining sleeve 330. These components cooperate to provide a solid connection between the connector 300 and the main pipeline 100 and the expanded corrugated pipe 200.

[0037] like Figures 2-5 As shown, in this utility model, the locking member 310 includes a sleeve 311 with a hollow cylindrical structure and a plurality of movable claws 312 slidably connected to the inner end of the sleeve 311. The sleeve 311 serves as a carrier for the movable claws 312, providing them with installation and movement space. On the outer circumferential surface of the inner end of the sleeve 311, several movable cavities 3111 are formed in an annular pattern with equal spacing around the axis of the sleeve 311. Insert pins 3113 are inserted into the movable cavities 3111 along the axial direction of the sleeve 3111. Movable claws 312 are sleeved in the movable cavities 3111 and can move radially along the movable cavities 3111 on the sleeve 3111. The movable claws 312 have waist-shaped grooves 3121. The insert pins 3113 pass through the waist-shaped grooves 3121. The insert pins 3113 limit the radial movement of the movable claws 312. The movable cavities 3111 and the insert pins 3113 cooperate to restrict the movement trajectory of the movable claws 312, so that they can only move radially. The cooperation between the waist-shaped grooves 3121 and the insert pins 3113 ensures that the movable claws 312 move within a specified range, ensuring connection stability.

[0038] like Figures 3-5As shown, specifically, a pair of guide plates 3123 are fixed on the outer end face of the movable claw 312. The outer end face of the guide plate 3123 is inclined. The inclined structure of the guide plate 3123 is used to cooperate with the sleeve 330, converting the axial force of the sleeve 330 into the radial movement force of the movable claw 312. A fixed prism 331 is fixed on the outer peripheral surface of the sleeve 330. The fixed prism 331 is used to rotate the sleeve 330, making it convenient for the operator to rotate the sleeve 330 with tools, thus improving the ease of operation. A second external thread 332 is provided on the outer peripheral surface of the sleeve 330 located at the rear end of the fixed prism 331. An internal thread 3115 is provided on the inner side surface of the outer end of the sleeve 311. The thread shape of the second external thread 332 matches that of the internal thread 3115. The thread engagement of the second external thread 332 and the internal thread 3115 realizes the stable connection and relative rotation of the sleeve 330 and the sleeve 311. When the abutment sleeve 330 is tightened in the sleeve 311, the inner end of the abutment sleeve 330 abuts against the inclined surface of the guide plate 3123, causing the movable claw 312 to extend outward along the movable cavity 3111. Through the interaction between the abutment sleeve 330 and the guide plate 3123, the movable claw 312 is driven to extend, thus confining the inner end of the connector 300 within the main pipe 100 and preventing the connector 300 from falling off the main pipe 100. Several movable grooves 3112 are formed on the outer peripheral surface of the inner end of the sleeve 311. The number of movable grooves 3112 is equal to the total number of guide plates 3123, and their positions correspond one-to-one. The movable grooves 3112 provide movement space for the guide plates 3123, ensuring that the guide plates 3123 are not interfered with during the movement of the movable claw 312, thus ensuring the normal operation of the structure.

[0039] like Figures 1-4 As shown, the main pipe 100 further includes a through hole for installing the sleeve 311. This through hole provides a position for the sleeve 311, allowing the connector 300 to be accurately installed on the side wall of the main pipe 100. The extended movable claw 312 is located inside the main pipe 100. A first external thread 3116 is provided on the outer circumferential surface of the outer end of the sleeve 311. The clamping nut 320 is threadedly connected to the sleeve 311 through the first external thread 3116. The engagement of the first external thread 3116 and the clamping nut 320 facilitates the adjustment of the position of the clamping nut 320. By tightening the clamping nut 320, the wall of the main pipe 100 is clamped between the movable claw 312 and the clamping nut 320. This clamping structure enhances the connection between the connector 300 and the main pipe 100, preventing the connector 300 from falling off.

[0040] like Figure 4 and Figure 5As shown, a return spring 3122 is fitted inside the waist-shaped groove 3121, and a sleeve hole 3114 is opened on the inner surface of the insertion post 3113. The end of the return spring 3122 is fitted into the sleeve hole 3114. Under the elastic force of the return spring 3122, the movable claw 312 retracts into the sleeve 311. The return spring 3122 ensures that the movable claw 312 can automatically reset when it is not subjected to external force, which facilitates the disassembly and installation of the connector 300.

[0041] like Figure 2 As shown, it is worth noting that a sealing ring 350 is provided between the tightening nut 320 and the outer wall of the main pipe 100. The sealing ring 350 is an annular rubber sealing ring with an O-shaped cross-section. The sealing ring 350 effectively prevents liquid or gas from leaking from the connection between the tightening nut 320 and the main pipe 100. By tightening the tightening nut 320, the sealing ring 350 can be pressed against the outer surface of the main pipe 100, further enhancing the sealing effect.

[0042] like Figure 1 and Figure 2 As shown, a third external thread 333 is provided on the outer peripheral surface of the outer end of the sleeve 330. The screw cap 340 is threadedly connected to the sleeve 330 through the third external thread 333, which ensures a stable connection between the screw cap 340 and the sleeve 330. The end of the expanded bellows 200 passes through the screw cap 340 and is fitted onto the outer end of the sleeve 330. By tightening the screw cap 340, the end of the expanded bellows 200 is squeezed between the screw cap 340 and the outer end of the sleeve 330. This compression structure ensures a tight connection between the expanded bellows 200 and the connector 300, preventing the connection from loosening.

[0043] In this embodiment, the corrugated flared socket joint for power pipelines is used as follows: First, the sleeve 311 is passed through the through hole on the main pipeline 100, allowing the movable claw 312 to extend into the main pipeline 100. Then, the abutment sleeve 330 is rotated, utilizing the engagement between its second external thread 332 and the internal thread 3115 of the sleeve 311, causing the abutment sleeve 330 to move into the sleeve 311. The inner end of the abutment sleeve 330 pushes the guide plate 3123, causing the movable claw 312 to extend outward along the movable cavity 3111. Next... The clamping nut 320 is screwed onto the outer end of the sleeve 311 through the first external thread 3116. The clamping nut 320 is tightened, and the wall of the main pipe 100 is clamped between the movable claw 312 and the clamping nut 320. Finally, the end of the expanded bellows 200 is passed through the swivel cap 340 and fitted onto the outer end of the sleeve 330. The swivel cap 340 is tightened, so that the end of the expanded bellows 200 is squeezed between the swivel cap 340 and the outer end of the sleeve 330, thus completing the connection between the expanded bellows 200 and the main pipe 100.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A corrugated flared socket joint for power pipelines, comprising a main pipeline (100), wherein an expanded corrugated pipe (200) is externally connected to the main pipeline (100), characterized in that: The expanded bellows (200) is connected to the main pipe (100) via a connector (300). The connector (300) includes a locking member (310) extending into the main pipe (100), a locking nut (320) threaded to the outer end of the locking member (310), a retaining sleeve (330) threaded to the inner side of the locking member (310), and a screw cap (340) threaded to the outer end of the retaining sleeve (330). The end of the expanded bellows (200) is squeezed between the screw cap (340) and the outer end of the retaining sleeve (330). The locking member (310) includes a sleeve (311) with a hollow cylindrical structure and a plurality of movable claws (312) slidably connected to the inner end of the sleeve (311). A plurality of movable cavities (3111) are formed annularly at equal intervals around the axis of the sleeve (311) on the outer circumferential surface of the inner end of the sleeve (311). Inserts (3113) are inserted into the movable cavities (3111) along the axial direction of the sleeve (311). The movable claws (312) are fitted inside the movable cavities (3111) and can move radially along the movable cavities (3111) on the sleeve (311). The sleeve (312) has a waist-shaped groove (3121) and the insert (3113) passes through the waist-shaped groove (3121). The insert (3113) limits the radial movement of the movable claw (312). A pair of guide plates (3123) are fixed on the outer end face of the movable claw (312). The outer end face of the guide plate (3123) is inclined. When the abutment sleeve (330) is tightened in the sleeve (311), the inner end of the abutment sleeve (330) abuts against the inclined surface of the guide plate (3123) and causes the movable claw (312) to extend outward along the movable cavity (3111). The main pipe (100) has a through hole for installing the sleeve (311). The movable claw (312) in the extended state is located inside the main pipe (100). By tightening the clamping nut (320), the wall of the main pipe (100) can be clamped between the movable claw (312) and the clamping nut (320).

2. The corrugated flared socket joint for power pipelines according to claim 1, characterized in that: A plurality of movable grooves (3112) are provided on the outer surface of the inner end of the sleeve (311). The number of movable grooves (3112) is equal to the total number of guide plates (3123) and their positions correspond one-to-one. The movable grooves (3112) provide the guide plates (3123) with movable space.

3. The corrugated flared socket joint for power pipelines according to claim 1, characterized in that: A return spring (3122) is fitted inside the waist-shaped groove (3121), and a sleeve hole (3114) is opened on the inner surface of the insert (3113). The end of the return spring (3122) is fitted into the sleeve hole (3114). Under the elastic force of the return spring (3122), the movable claw (312) retracts into the sleeve (311).

4. The corrugated flared socket joint for power pipelines according to claim 1, characterized in that: The outer circumferential surface of the outer end of the sleeve (311) is provided with a first external thread (3116), and the clamping nut (320) is threadedly connected to the sleeve (311) through the first external thread (3116).

5. The corrugated flared socket joint for power pipelines according to claim 1, characterized in that: A fixing prism (331) is fixed on the outer peripheral surface of the abutment tube (330), and the fixing prism (331) is used to rotate the abutment tube (330).

6. The corrugated flared socket joint for power pipelines according to claim 5, characterized in that: The outer surface of the sleeve (330) located at the rear end of the fixed prism (331) is provided with a second external thread (332), and the inner surface of the outer end of the sleeve (311) is provided with an internal thread (3115). The thread shape of the second external thread (332) matches that of the internal thread (3115).

7. The corrugated flared socket joint for power pipelines according to claim 1, characterized in that: The outer surface of the outer end of the sleeve (330) is provided with a third external thread (333), and the screw cap (340) is threadedly connected to the sleeve (330) through the third external thread (333).

8. The corrugated flared socket joint for power pipelines according to claim 1, characterized in that: A sealing ring (350) is provided between the clamping nut (320) and the outer wall of the main pipe (100). The sealing ring (350) is an annular rubber sealing ring with an O-shaped cross section. By tightening the clamping nut (320), the sealing ring (350) can be pressed against the outer surface of the main pipe (100).

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