A slide-in retreat-stop interface

Abstract

The utility model relates to pipeline interface technical field especially relates to a slide into formula stop retreating interface. The interface includes the spigot, the socket and the sealing ring, and the outer wall of spigot has the convex ring setting around its circumference, and the socket has the anchorage storehouse and the sealed storehouse in, the composite fender ring is installed in the anchorage storehouse, and the composite fender ring includes the elastic ring and the metal ring, the outside of elastic ring and the first end surface and the inner wall of anchorage storehouse abut, and its second end surface and the first end surface of metal ring abut, or the metal ring is installed in the elastic ring, the outside of metal ring and the inner wall of anchorage storehouse abut, and its inside and the outer wall of spigot abut, the socket still is equipped with the welding ring storehouse in, and the welding ring storehouse is linked together with the anchorage storehouse, and the distance between the side wall of welding ring storehouse and spigot is less than the height of convex ring. The utility model effectively solves the socket type pipeline interface of equipping the stop retreating ring in the prior art, and the technical problem that the fender ring is easy to deform and dislocate in the extreme condition, causes the stop retreating failure, the interface uncouples, and endangers the safety of pipeline.

Description

Technical Field

[0001] This utility model relates to the field of pipe interface technology, and in particular to a slide-in anti-reverse interface. Background Technology

[0002] Socket-type pipe joints are a highly efficient form of pipe connection. Their principle involves precisely inserting the spigot of one pipe into the corresponding socket of another pipe, thus achieving a tight connection. Socket-type pipe joints offer advantages such as simple connection and operation, reliable sealing performance, and strong adaptability to various environments, and are widely used in municipal engineering water supply and drainage, long-distance oil and gas transportation, and heat transmission.

[0003] Existing conventional socket-type pipe joints are at risk of detachment under complex geological conditions or large axial tensile forces. To ensure the stability of the joint connection, a check ring is usually installed inside the socket-type pipe joint. This type of socket-type pipe joint with a check ring typically has a rigid retaining ring structure pre-installed inside the socket. When the spigot end is fully inserted into the socket, the protruding check ring on the outer wall of the spigot will fit into the retaining ring, and the physical blocking effect of the retaining ring will firmly restrict the check ring in a specific area inside the socket.

[0004] It can be seen that this anchoring mechanism of the socket-type pipe joint equipped with a backstop ring can not only withstand the axial tensile force of the pipe and prevent the joint from accidentally coming off, but also retain the radial deflection capability of the flexible joint. It can be widely used in water pipelines and long-distance energy transmission projects with complex geological conditions and the need to resist foundation settlement.

[0005] However, in existing socket-type pipe joints equipped with anti-reverse rings, the built-in retaining ring can move with the spigot. During earthquakes, horizontal directional drilling, and other extreme conditions, the joint will be subjected to repeated deflections at multiple angles. In this situation, the retaining ring will move with the spigot within the socket anchoring chamber. During this process, the retaining ring itself may twist and deform. For split retaining rings, misalignment between the different segments is also prone to occur. These situations can lead to the failure of the anti-reverse structure, causing the joint to detach and posing a serious threat to the safe and stable operation of the pipeline system. Utility Model Content

[0006] This invention provides a sliding-in anti-reverse interface to solve the technical problem in the prior art where, under extreme conditions, the retaining ring of the socket-type pipe interface equipped with an anti-reverse ring is easily deformed and misaligned, leading to anti-reverse failure, interface detachment, and endangering pipeline safety.

[0007] To solve the above problems, the sliding anti-reverse interface provided by this utility model adopts the following technical solution: A sliding anti-reverse interface includes a socket, a receptacle, and a sealing ring disposed between the socket and the receptacle. The outer wall of the socket has a raised ring disposed circumferentially therearound. The socket has an anchoring chamber and a sealing chamber, and the sealing ring is disposed in the sealing chamber; a composite retaining ring is installed in the anchoring chamber, and the composite retaining ring includes an elastic ring and a metal ring; The outer side and first end face of the elastic ring abut against the inner wall of the anchoring chamber, and its second end face abuts against the first end face of the metal ring, or the metal ring is installed inside the elastic ring; The outer side of the metal ring abuts against the inner wall of the anchoring chamber, and its inner side abuts against the outer wall of the insertion port. The socket contains a welding ring chamber at one end of the anchor chamber opposite to the socket end. The welding ring chamber is connected to the anchor chamber, and the longitudinal distance between the bottom end of the side wall of the welding ring chamber and the outer wall of the socket is less than the height of the protruding ring.

[0008] The beneficial effects of the sliding anti-reverse interface provided by this utility model are: 1. By installing a composite retaining ring consisting of an elastic ring and a metal ring within the anchoring chamber, the metal ring acts as a rigid frame to prevent the protruding ring from retracting, directly bearing the impact of the protruding ring under extreme conditions. This avoids overall twisting of the composite retaining ring due to insufficient rigidity. The close fit design between the metal ring and the outer wall of the anchoring chamber and the spigot further enhances the stability of the composite retaining ring within the anchoring chamber. Even if the interface deflects, the metal ring can maintain its ring shape and is not prone to local twisting. The elastic ring, as a flexible structure, fills the space between the metal ring and the anchoring chamber or covers the metal ring. When the interface deflects repeatedly at multiple angles, the elastic ring can absorb the impact force generated by the deflection through its own elastic deformation, rather than transferring all the stress to the metal ring, thus preventing the metal ring from twisting due to stress concentration. For split metal rings, the flexible support of the elastic ring can also fill the gaps between the segmented metal rings, providing adaptive buffering for each segmented metal ring during deflection and preventing misalignment of the segmented metal rings due to uneven stress.

[0009] 2. By abutting the outer surface of the elastic ring against the inner wall of the anchorage chamber, a radial constraint is formed on the elastic ring. By abutting the first end face of the elastic ring against the inner wall of the anchorage chamber, an axial constraint is formed on the elastic ring. The second end face of the elastic ring abuts against the first end face of the metal ring, a transmitted constraint is formed between the elastic ring and the metal ring, so that the anchorage chamber forms a dual fixation of the elastic ring in both the radial and axial directions. At the same time, by abutting against the end face of the metal ring, the elastic ring transmits its own constraint to the metal ring, indirectly restricting the movement of the metal ring, thereby preventing the composite retaining ring from moving with the socket.

[0010] 3. By abutting the outer surface of the metal ring against the inner wall of the anchoring chamber, radial restraint is formed on the metal ring, which can block the radial movement of the metal ring; by abutting the inner surface of the metal ring against the outer wall of the socket, a fitting constraint is formed on the metal ring; in extreme cases, the radial constraint generated by the anchoring chamber on the metal ring and the end face support generated by the elastic ring on the metal ring can confine the metal ring within a fixed annular space, preventing the metal ring from being misaligned or deformed.

[0011] 4. By setting a welding ring chamber inside the socket and placing the welding ring chamber at the end of the anchor chamber away from the socket end, the welding ring chamber is connected to the anchor chamber. The longitudinal distance between the bottom of the side wall of the welding ring chamber and the spigot is less than the height of the raised ring. After the sliding anti-reverse interface provided in this application is installed, under extreme conditions, due to the restriction of the side wall of the anchor chamber and the metal ring, the raised ring can move between the metal ring and the side wall of the welding ring chamber without any retraction, thereby ensuring the stability of the spigot and socket connection.

[0012] Through the above-mentioned design, this utility model effectively solves the technical problem in the prior art where, under extreme conditions, the retaining ring of the socket-type pipe interface equipped with a backstop ring is prone to deformation and misalignment, leading to backstop failure, interface detachment, and endangering pipeline safety.

[0013] Furthermore, the inner wall of the anchoring chamber and the outer surface of the metal ring are both spherical, so that the metal ring can slide or deflect relative to each other within the anchoring chamber; the center of the sphere is the rotation center of the socket.

[0014] Furthermore, the inner wall of the anchoring chamber and the outer surface of the metal ring are both inclined surfaces, so that the metal ring can slide or deflect relative to each other within the anchoring chamber; the angle between the inclined surface and the horizontal direction is less than or equal to 45°.

[0015] Furthermore, the metal ring is an integrally formed structure with several openings on its surface; or the metal ring comprises multiple arc-shaped metal parts, which together form the metal ring.

[0016] Furthermore, the second end face of the metal ring is a bevel or an arc surface; on the metal ring, the anti-retraction surface connecting its inner side and its first end face is a plane, and the angle between the anti-retraction surface and the horizontal direction is 85° to 95°. The anti-retraction surface is used to prevent the protruding ring from retracting.

[0017] Furthermore, the elastic ring is provided with a plurality of relief holes, which are spaced apart in the circumferential direction of the elastic ring.

[0018] Furthermore, the cross-section of the recessed hole is circular, rectangular, elliptical, rhomboid, or oblong.

[0019] Furthermore, the arc length of the metal part is less than or equal to the outer diameter circumference of the socket.

[0020] Furthermore, the elastic ring is an integrally formed structure, or the elastic ring includes multiple arc-shaped elastic elements, and the multiple arc-shaped elastic elements constitute the elastic ring. Attached Figure Description

[0021] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein: Figure 1 This is a cross-sectional schematic diagram of the socket in the sliding anti-reverse interface provided by this utility model; Figure 2 This is a cross-sectional view of the insertion port in the slide-in anti-reverse interface provided by this utility model; Figure 3 This is a schematic diagram of the structure of the sliding anti-reverse interface provided by this utility model when the socket is fully inserted into the socket. Figure 1 ; Figure 4 for Figure 3 A schematic diagram of the composite stop block in the slide-in anti-reverse interface shown; Figure 5 for Figure 4 Side view of the composite stop block; Figure 6 for Figure 4 Cross-sectional view of the composite stopper installed inside the anchorage chamber; Figure 7 for Figure 3 The diagram shows the structure of the sliding-in anti-reverse interface when the socket is not inserted into the socket. Figure 8 for Figure 3 A schematic diagram of the structure when the insertion part of the sliding anti-reverse interface is inserted into the socket. Figure 9 Schematic diagram of the segmented elastic ring provided by this utility model Figure 1 ; Figure 10 Schematic diagram of the segmented elastic ring provided by this utility model Figure 2 ; Figure 11 A schematic diagram of the segmented metal ring provided by this utility model; Figure 12 Schematic diagram of the sliding anti-reverse interface of the elastic ring provided by this utility model Figure 2 ; Figure 13This is a schematic diagram of the structure of the sliding anti-reverse interface provided by this utility model when the socket is fully inserted into the socket. Figure 3 ; Figure 14 This is a schematic diagram of the structure of the sliding anti-reverse interface provided by this utility model when the socket is fully inserted into the socket. Figure 4 ; Figure 15 for Figure 14 The diagram shows the structure of the metal ring in the sliding anti-reverse interface. Figure 16 for Figure 14 The diagram shows the structure of the elastic ring in the sliding anti-reverse interface.

[0022] Explanation of reference numerals in the attached figures: 1. Socket; 2. Socket; 3. Sealing ring; 4. Raised ring; 5. Anchoring chamber; 6. Sealing chamber; 7. Welded ring chamber; 8. Elastic ring; 9. Metal ring; 10. Outer surface of elastic ring; 11. First end face of elastic ring; 12. Outer surface of metal ring; 13. Inner surface of metal ring; 14. Boss; 15. Groove; 16. Arc-shaped metal part; 17. Anti-recession surface; 18. Recession hole; 19. Arc-shaped elastic part; 20. Side wall of welded ring chamber. Detailed Implementation

[0023] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0024] An embodiment of the slide-in anti-reverse interface provided by this utility model: like Figures 1 to 16 As shown, the sliding anti-reverse interface includes a socket 1, a socket 2, and a sealing ring 3 disposed between the socket 1 and the socket 2. The outer wall of the socket 1 has a raised ring 4 arranged circumferentially around it.

[0025] Regarding socket 2. Socket 2 has an anchoring chamber 5 and a sealing chamber 6. The sealing ring 3 is set in the sealing chamber 6, and a composite retaining ring is installed in the anchoring chamber 5. A welding ring chamber 7 is provided in the end of the anchoring chamber 5 away from the socket 2. The welding ring chamber 7 is connected to the anchoring chamber 5, and the longitudinal distance between the bottom end of the side wall 20 of the welding ring chamber and the outer wall of the socket 1 is less than the height of the protruding ring 4.

[0026] In this embodiment, as Figure 1 As shown, from left to right, the socket 2 is provided with an anchoring chamber 5, a welding ring chamber 7, and a sealing chamber 6. In other embodiments, the socket 2 is provided with a sealing chamber 6, an anchoring chamber 5, and a welding ring chamber 7 from left to right.

[0027] Regarding composite retaining rings. For example... Figures 4 to 6As shown, the composite retaining ring includes an elastic ring 8 and a metal ring 9. The outer surface 10 of the elastic ring and the first end face 11 of the elastic ring both abut against the inner wall of the anchoring chamber 5. The arc length of the metal ring 9 is less than or equal to the outer diameter circumference of the insertion port 1.

[0028] In this embodiment, the composite retaining ring is a split structure. When the composite retaining ring is installed in the anchoring chamber 5, the elastic ring 8 is first installed in the anchoring chamber 5, and then the metal ring 9 is installed in the anchoring chamber 5, so that the second end face of the elastic ring 8 abuts against the first end face of the metal ring 9. In this embodiment, the outer side 12 of the metal ring abuts against the inner wall of the anchoring chamber 5, and the inner side 13 of the metal ring abuts against the outer wall of the insertion port 1.

[0029] In other embodiments, the second end face of the elastic ring 8 is bonded to the first end face of the metal ring 9 to form a composite retaining ring, which is then directly installed inside the anchoring chamber 5; or, in other embodiments, such as Figures 14 to 16 As shown, the first end face of the metal ring 9 has a boss 14, and the second end face of the elastic ring 8 has a groove 15 that matches the boss 14. The boss 14 is inserted into the groove 15 to achieve the connection between the metal ring 9 and the elastic ring 8; or, in other embodiments, such as Figure 13 As shown, the metal ring 9 is installed inside the elastic ring 8 to form an integral composite block.

[0030] In this embodiment, the inner wall of the anchoring chamber 5 and the outer surface 12 of the metal ring are both spherical, so that the metal ring 9 can slide or deflect relative to each other within the anchoring chamber 5, and the center of the sphere is the rotation center of the socket 2; or, in this embodiment, the inner wall of the anchoring chamber 5 and the outer surface 12 of the metal ring are both inclined, so that the metal ring 9 can slide or deflect relative to each other within the anchoring chamber 5, and the angle between the inclined surface and the horizontal direction is less than or equal to 45°.

[0031] In this embodiment, the metal ring 9 is an integrally formed structure with several openings on its surface. The arc length of the metal parts is less than or equal to the outer diameter circumference of the socket 1. Alternatively, the metal ring 9 includes multiple arc-shaped metal parts 16, which together form the metal ring 9. The total arc length of the multiple arc-shaped metal parts 16 is less than or equal to the outer diameter circumference of the socket 1.

[0032] In this embodiment, the second end face of the metal ring 9 is a bevel or an arc surface; on the metal ring 9, the anti-retraction surface 17 connecting the inner side 13 of the metal ring and the first end face of the metal ring 9 is a plane, and the angle between the anti-retraction surface 17 and the horizontal direction is 85° to 95°. The anti-retraction surface 17 is used to prevent the protruding ring 4 from retracting during use.

[0033] In this embodiment, as Figure 4 , Figure 5 , Figure 10 and Figure 16As shown, the elastic ring 8 has multiple recessed holes 18, which are spaced apart in the circumferential direction of the elastic ring 8. The cross-section of each recessed hole 18 is circular, rectangular, elliptical, rhomboid, or oblong. It should be noted that an oblong shape refers to a quadrilateral structure with two parallel sides, the ends of which are connected by rounded edges. In other embodiments, such as... Figure 9 and Figure 12 As shown, the elastic ring 8 does not have a relief hole 18.

[0034] In this embodiment, the elastic ring 8 is an integrally formed structure; or, in this embodiment, the elastic ring 8 includes a plurality of arc-shaped elastic elements 19, and the plurality of arc-shaped elastic elements 19 constitute the elastic ring 8.

[0035] In addition, it should be noted that the insertion end of the socket 1 has an arc surface, and the second end of the metal ring 9 has a corresponding arc surface.

[0036] The working principle of the sliding anti-reverse interface provided by this utility model is as follows: When the socket 1 is inserted into the socket 2, the protruding ring 4 enters the socket 1 and first squeezes the second end face of the metal ring 9, forcing the elastic ring 8 to compress. The metal ring 9 moves axially along the compression direction of the elastic ring 8. At the same time, the metal ring 9 rotates towards the elastic ring 8 with its contact point with the elastic ring 8 as the center, so that the inner side 13 of the metal ring can be separated from the outer wall of the socket 1, forming a temporary channel for the protruding ring 4 to pass through. After the protruding ring 4 passes through the temporary channel, its squeezing effect on the metal ring 9 disappears. Under the action of the elastic restoring force of the elastic ring 8, the metal ring 9 and the elastic ring 8 gradually return to their original positions until the inner side of the metal ring 9 abuts against the outer wall of the socket 1. Then, check the contact between the inner side 13 of the metal ring and the outer wall of the socket 1. When the protruding ring 4 is completely located in the space enclosed by the metal ring 9 and the side wall 20 of the welding ring chamber, it is determined that the inner side of the metal ring 9 has completely contacted the outer wall of the socket 1, and the sliding anti-reverse interface is installed. In extreme situations such as earthquakes or horizontal directional drilling, the protruding ring 4 can move between the metal ring 9 and the side wall 20 of the welding ring chamber, that is, the insertion port 1 can move slightly, and the range of movement is the distance between the metal ring 9 and the side wall 20 of the welding ring chamber. At this time, due to the radial constraint of the anchoring chamber 5 on the metal ring 9 and the end face support of the elastic ring 8 on the metal ring 9, the metal ring 9 can be confined within a fixed annular space, which can effectively prevent the protruding ring 4 from retracting, thereby ensuring the reliability of the interface connection.

[0037] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0038] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A sliding-in anti-reverse interface, comprising a socket, a receptacle, and a sealing ring disposed between the socket and the receptacle, wherein the outer wall of the socket has a circumferentially arranged protruding ring, characterized in that: The socket has an anchoring chamber and a sealing chamber, and the sealing ring is disposed in the sealing chamber. A composite retaining ring is installed in the anchoring chamber, which includes an elastic ring and a metal ring. The outer side and first end face of the elastic ring abut against the inner wall of the anchoring chamber, and its second end face abuts against the first end face of the metal ring, or the metal ring is installed in the elastic ring. The outer side of the metal ring abuts against the inner wall of the anchoring chamber, and its inner side abuts against the outer wall of the socket. A welding ring chamber is provided in the socket at the end of the anchoring chamber opposite to the socket end. The welding ring chamber is connected to the anchoring chamber, and the longitudinal distance between the bottom end of the side wall of the welding ring chamber and the outer wall of the socket is less than the height of the protruding ring.

2. The slide-in anti-reverse interface according to claim 1, characterized in that: The inner wall of the anchoring chamber and the outer surface of the metal ring are both spherical, so that the metal ring can slide or deflect relative to each other within the anchoring chamber; the center of the sphere is the rotation center of the socket.

3. The slide-in anti-reverse interface according to claim 1, characterized in that: The inner wall of the anchoring chamber and the outer surface of the metal ring are both inclined surfaces, so that the metal ring can slide or deflect relative to each other within the anchoring chamber; the angle between the inclined surface and the horizontal direction is less than or equal to 45°.

4. The slide-in anti-reverse interface according to any one of claims 1 to 3, characterized in that: The metal ring is a one-piece molded structure with several openings on its surface; or the metal ring comprises multiple arc-shaped metal parts, which together form the metal ring.

5. The slide-in anti-reverse interface according to any one of claims 1 to 3, characterized in that: The second end face of the metal ring is a bevel or an arc surface; on the metal ring, the anti-retraction surface connecting its inner side and its first end face is a plane, and the angle between the anti-retraction surface and the horizontal direction is 85° to 95°. The anti-retraction surface is used to prevent the protruding ring from retracting.

6. The slide-in anti-reverse interface according to any one of claims 1 to 3, characterized in that: The elastic ring has multiple relief holes, which are spaced apart in the circumferential direction of the elastic ring.

7. The slide-in anti-reverse interface according to claim 6, characterized in that: The cross-section of the recessed hole is circular, rectangular, elliptical, rhomboid, or oblong.

8. The slide-in anti-reverse interface according to any one of claims 1 to 3, characterized in that: The arc length of the metal ring is less than or equal to the outer diameter circumference of the socket.

9. The slide-in anti-reverse interface according to any one of claims 1 to 3, characterized in that: The elastic ring is a one-piece molded structure, or the elastic ring includes multiple arc-shaped elastic elements, and the multiple arc-shaped elastic elements constitute the elastic ring.

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