Suspension type sealing connection structure and pipeline connection unit

Abstract

The invention relates to the field of pipes, in particular to a suspension type sealing connection structure and a pipeline connection unit. Comprising a spigot section, a sealing ring and a bellmouth section used for bearing the spigot section. The socket section is provided with an anti-disengaging groove and a sealing matching section used for being matched with a sealing ring. The spigot section comprises an inner pipe layer and an outer pipe layer, the two axial ends of the outer pipe layer are integrally connected with the inner pipe layer, and a cavity is formed between the inner pipe layer and the outer pipe layer, so that the main body part of the outer pipe layer is separated from the inner pipe layer; the main body part of the outer pipe layer is provided with concave-convex alternate corrugated sections and clamping parts clamped with the anti-falling grooves, one wave trough in each corrugated section is a sealing mounting groove used for mounting a sealing ring, and the sealing ring is mounted in the sealing mounting groove; in the butt joint process of the spigot section and the socket section, the corrugated section can drive the sealing ring to deviate so that the sealing ring can be centered. The sealing performance can be improved.

Description

Technical Field

[0001] This application relates to the field of pipe materials, and in particular to a suspended sealing connection structure and pipe connection unit. Background Technology

[0002] The descriptions in this section provide background information related to this disclosure only and do not constitute prior art. Pipes are essential materials in construction projects, commonly including water supply pipes and drainage pipes. For ease of transportation, each pipe section is not made too long and needs to be connected on-site. During construction, it is difficult to ensure that two pipes are aligned (i.e., their axes coincide). When the two pipes are significantly misaligned, the sealing ring may tilt or deform, leading to a decrease in the sealing performance of the pipeline. Summary of the Invention

[0003] In view of this, this application provides a suspended sealing connection structure and pipeline connection unit, which can improve sealing performance.

[0004] To achieve the above objectives, this application employs the following technical solution:

[0005] A suspended sealing connection structure, characterized in that: it includes a spigot section, a sealing ring, and a socket section for receiving the spigot section; the socket section is provided with an anti-detachment groove and a sealing mating section for cooperating with the sealing ring; the spigot section includes an inner tube layer and an outer tube layer, the axial ends of the outer tube layer are integrally connected to the inner tube layer, a cavity is provided between the inner tube layer and the outer tube layer, thereby separating the main body of the outer tube layer from the inner tube layer; the main body of the outer tube layer is provided with alternating corrugated sections and a snap-fit ​​part that engages with the anti-detachment groove; one trough of the corrugated section is a sealing mounting groove for installing the sealing ring, and the sealing ring is installed in the sealing mounting groove; during the connection between the spigot section and the socket section, the corrugated section can offset the sealing ring to ensure that the sealing ring is aligned.

[0006] The aforementioned suspended sealing connection structure of this application features alternating corrugated sections on the outer pipe layer, which enhances the circumferential strength of the outer pipe layer. Furthermore, except for the two ends of the outer pipe layer which are connected to the inner pipe layer, the rest is suspended. The sealing ring is installed in a trough of one of the corrugated sections. During the connection between the spigot and socket sections, if the inner pipe layer and socket section are eccentric, the corrugated section is easily deformed by the pressure from the socket section, allowing the sealing ring to automatically align. Additionally, after the pipeline is buried, when subjected to external pressure, if the socket and spigot of the two connected pipes experience relative horizontal or vertical (non-axial) displacement, the suspended outer pipe layer, sealing ring, and snap-fit ​​joint remain stationary, ensuring a tight seal, similar to the function of a damper. Moreover, after the pipeline is installed underground, during the geological settlement process, the two pipes will generate axial pull-out force. Since the anti-detachment part is engaged with the anti-detachment groove, the pull-out force will act on the corrugated section. Since the corrugated section is a single-wall structure with concave and convex shapes, it will generate axial compression deformation, thereby playing an axial buffering role and preventing the pipe from breaking.

[0007] In some embodiments, the snap-fit ​​part includes connecting teeth integrally connected to the corrugated section. The connecting teeth are connected to the corrugated section and the outer pipe layer via connecting rings. The connecting rings include several concave and convex rings sleeved on the outer periphery of the connecting teeth. The concave and convex rings are alternately arranged and nested one another to form a retractable corrugated structure. When the spigot section and the socket section are joined, the connecting teeth are compressed radially by the pressure of the socket section through the connecting rings, allowing the connecting teeth to enter the anti-detachment groove. After entering the anti-detachment groove, the connecting teeth rebound radially, forming a snap-fit ​​with the anti-detachment groove. Because the connecting rings can drive the connecting teeth to change radially, the connecting teeth can be radially compressed under pressure and can automatically return radially when no force is applied. Thus, when the pipes are joined, the connecting teeth can enter the anti-detachment groove to form a snap-fit ​​structure.

[0008] In some embodiments, the snap-fit ​​part is a separate anti-detachment component installed from the corrugated section. One trough in the corrugated section is an anti-detachment mounting groove for installing the anti-detachment component. The anti-detachment component includes a main body installed in the anti-detachment mounting groove and anti-detachment teeth integrally connected to the main body. The anti-detachment teeth can be radially folded when pressed so that the anti-detachment teeth can enter the anti-detachment groove and snap with it.

[0009] In some embodiments, the snap-fit ​​portion is an integrally connected, annularly arranged anti-detachment wave that is attached to the outer tube layer. The integral anti-detachment wave is a complete annular structure, which is easy to mold integrally and has high circumferential strength. The anti-detachment wave is a radially convex waveform.

[0010] In some embodiments, the outer tube layer is provided with one or more interlocking expansion joints at at least one of the axial ends of the integrated anti-detachment wave. These expansion joints can be axially stretched, acting as an axial buffer to protect the tube and the integrated anti-detachment wave from excessive pulling.

[0011] In some embodiments, the outer tube layer has at least one adhesive trough between the integrated anti-detachment corrugation and the corrugated section, and the adhesive trough is fixedly connected to the inner tube layer. Selecting a portion of the corrugated section's trough as the adhesive trough and fixing it integrally with the inner tube layer improves the circumferential strength of the spigot, facilitates spigot fabrication, and reduces the possibility of pressure deformation.

[0012] This application also provides a pipe connection unit, characterized in that: it includes a pipe body, on which the above-mentioned spigot section and / or socket section are provided.

[0013] As can be seen from the above technical solution, this application has at least the following advantages and positive effects:

[0014] This application discloses a suspended sealing connection structure. The outer pipe layer features alternating corrugated sections, which enhance its circumferential strength. Except for the two ends of the outer pipe layer connected to the inner pipe layer, the rest is suspended. The sealing ring is installed in a trough of one of the corrugated sections. During the connection between the spigot and socket sections, if the inner pipe layer and socket section are misaligned, the corrugated section is easily deformed by the pressure from the socket section, allowing the sealing ring to automatically align. Furthermore, after the pipeline is buried, when subjected to external forces, if the socket and spigot of the two connected pipes experience relative horizontal or vertical (non-axial) displacement, the suspended outer pipe layer, sealing ring, and locking part remain stationary, ensuring a tight seal, similar to the function of a damper. Moreover, after the pipeline is installed underground, during the geological settlement process, the two pipes will generate axial pull-out force. Since the anti-detachment part is engaged with the anti-detachment groove, the pull-out force will act on the corrugated section. Since the corrugated section is a single-wall structure with concave and convex shapes, it will generate axial compression deformation, thereby playing an axial buffering role and preventing the pipe from breaking. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application;

[0016] Figure 2 This is a schematic diagram of the snap-fit ​​part in Embodiment 1 of this application;

[0017] Figure 3 This is a top view of the snap-fit ​​portion in Embodiment 1 of this application;

[0018] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this application;

[0019] Figure 5 This is a structural schematic diagram of Embodiment 3 of this application;

[0020] Figure 6 This is a schematic diagram of the socket segment in Embodiment 4 of this application;

[0021] Figure 7 This is a cross-sectional view of the socket section in Embodiment 4 of this application;

[0022] Figure 8 This is a schematic diagram of the structure of Embodiment 4 of this application;

[0023] Figure 9 This is a structural schematic diagram of Embodiment 5 of this application.

[0024] Labeling Explanation: 1. Spigot Section; 11. Inner Tube Layer; 12. Outer Tube Layer; 121. Corrugated Section; 1211. Sealing Mounting Groove; 1212. Anti-detachment Mounting Groove; 122. Connecting Tooth; 123. Connecting Ring; 1231. Concave Ring; 1232. Convex Ring; 124. Integrated Anti-detachment Corrugation; 125. Spigot Expansion Joint; 126. Adhesive Corrugation Valley; 2. Socket Section; 21. Anti-detachment Groove; 22. Sealing Fitting Section; 3. Sealing Ring; 4. Tube Body; 5. Anti-detachment Component; 51. Mounting Body; 52. Anti-detachment Tooth. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the application will be described in further detail below with reference to the accompanying drawings. The terminology used in the embodiments section of this application is only for explaining specific embodiments and is not intended to limit the application.

[0026] Example 1

[0027] See Figures 1 to 3 This application provides a suspended sealing connection structure, including a spigot section 1, a sealing ring 3, and a socket section for receiving the spigot section 1; the socket section 2 is provided with an anti-detachment groove 21 and a sealing mating section 22 for cooperating with the sealing ring 3; the spigot section 1 includes an inner tube layer 11 and an outer tube layer 12, the two axial ends of the outer tube layer 12 are integrally connected to the inner tube layer 11, a cavity is provided between the inner tube layer 11 and the outer tube layer 12, so that the main body of the outer tube layer 12 is separated from the inner tube layer 11, the main body of the outer tube layer 12 is provided with a corrugated section 121 with alternating concave and convex features and a snap-fit ​​part that engages with the anti-detachment groove 21, one trough of the corrugated section 121 is a sealing mounting groove 1211 for installing the sealing ring 3, and the sealing ring 3 is installed in the sealing mounting groove 1211; during the process of spigot section 1 and socket section 2 being connected, the corrugated section 121 can offset the sealing ring 3 so that the sealing ring 3 is aligned.

[0028] This suspended sealing connection structure features alternating corrugated sections 121 on the outer pipe layer 12, which enhances the circumferential strength of the outer pipe layer 12. Furthermore, except for the two ends of the outer pipe layer 12 which are connected to the inner pipe layer 11, the rest is suspended. The sealing ring 3 is installed in a trough of one of the corrugated sections 121. During the connection between the spigot section 1 and the socket section 2, if the inner pipe layer 11 and the socket section 2 are misaligned, the corrugated section 121 is easily deformed by the pressure of the socket section 2, allowing the sealing ring 3 to automatically align. Additionally, after the pipeline is buried, when subjected to external pressure, if the sockets and spigots of the two connected pipes experience relative horizontal or vertical (non-axial) displacement, the structure ensures that the suspended outer pipe layer 12, the sealing ring 3, and the snap-fit ​​joint do not move relative to each other, thus ensuring a tight seal, similar to the function of a damper. Moreover, after the pipeline is installed underground, during the geological settlement process, the two pipes will generate axial pull-out force. Since the anti-detachment part is engaged with the anti-detachment groove 21, the pull-out force will act on the corrugated section 121. Since the corrugated section 121 is a single-wall structure with concave and convex shapes, it will generate axial compression deformation, thereby playing an axial buffering role and preventing the pipe from breaking.

[0029] The snap-fit ​​part includes a connecting tooth 122 integrally connected to the corrugated section 121. The connecting tooth 122 is connected to the corrugated section 121 and the outer tube layer 12 through a connecting ring 123. The connecting ring 123 includes a plurality of concave rings 1231 and convex rings 1232 sleeved on the outer periphery of the connecting tooth 122. The concave rings 1231 and convex rings 1232 are alternately arranged and nested in each other to form a retractable corrugated structure. When the spigot section 1 and the socket section 2 are mated, the connecting tooth 122 is compressed by the socket section 2 and can be radially contracted through the connecting ring 123, so that the connecting tooth 122 can enter the anti-detachment groove 21. After entering the anti-detachment groove 21, the connecting tooth 122 rebounds radially and forms a snap-fit ​​with the anti-detachment groove 21. Because the connecting ring 123 can drive the connecting teeth 122 to change radially, the connecting teeth 122 can be radially compressed when under pressure, and can automatically return to their radial position when not under force. In this way, when the pipes are connected, the connecting teeth 122 can enter the anti-detachment groove 21 to form a snap-fit ​​structure.

[0030] Example 2

[0031] See Figure 4 This illustrates another embodiment of the present application. The difference between this embodiment and the first embodiment lies in the different locking parts. In this embodiment, the locking part is an anti-detachment component 5 that is separately installed from the corrugated section 121. One of the troughs in the corrugated section 121 is an anti-detachment mounting groove 1212 for installing the anti-detachment component 5. The anti-detachment component 5 includes a mounting body 51 installed in the anti-detachment mounting groove 1212 and an anti-detachment tooth 52 integrally connected to the mounting body 51. When the anti-detachment tooth 52 is pressed, it can be radially folded so that the anti-detachment tooth 52 enters the anti-detachment groove 21 and engages with it.

[0032] Example 3

[0033] See Figure 5 This illustrates another embodiment of the present application, which is a pipe body 4, including a pipe body 4, with a spigot section 1 and a socket section 2 integrally provided at both ends of the pipe body 4 as described in Embodiment 1 above. When adjacent pipes are joined, the spigot section 1 of the first pipe is connected to the socket section 2 of the second pipe. The spigot section 1 and the socket section 2 are generally circular. The pipe body 4 can be a round pipe or a square pipe.

[0034] Example 4

[0035] See Figures 6 to 8 This illustrates another embodiment of the present application. The main difference between this embodiment and Embodiment 1 lies in the snap-fit ​​portion. The snap-fit ​​portion is an integrally connected to the outer tube layer 12 and an integrally arranged anti-detachment wave 124 in a ring. The integral anti-detachment wave is a complete ring structure, which is easy to integrally mold and has high circumferential strength.

[0036] The outer tube layer 12 has at least one or more recessed and protruding spigot expansion joints 125 at at least one of the axial ends of the integrated anti-detachment wave 124. The spigot expansion joints can be axially stretched, which can play an axial buffering role and protect the tube and the integrated anti-detachment wave from excessive pulling.

[0037] Example 5

[0038] See Figure 9 This describes another embodiment of the present application. The main difference between this embodiment and Embodiment 4 is that the outer tube layer 12 has at least one adhesive valley 126 between the integral anti-detachment wave 124 and the corrugated section 121, and the adhesive valley 126 is fixedly connected to the inner tube layer 11. Selecting a portion of the valleys in the corrugated section as adhesive valleys and fixing them integrally to the inner tube layer improves the circumferential strength of the socket, facilitates socket fabrication, and reduces the possibility of deformation under pressure.

[0039] Example 6

[0040] This embodiment is a pipe body 4, which includes a spigot section 1 and a socket section 2 as described in Embodiments 4 or 5, which are integrally provided at both ends of the pipe body 4. When adjacent pipes are connected, the spigot section 1 of the first pipe is connected to the socket section 2 of the second pipe. The spigot section 1 and the socket section 2 are generally circular. The pipe body 4 can be a round pipe or a square pipe.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them; although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A suspended sealing connection structure, characterized in that: It includes a spigot section (1), a sealing ring (3), and a socket section (2) for receiving the spigot section (1); the socket section (2) is provided with an anti-detachment groove (21) and a sealing mating section (22) for cooperating with the sealing ring (3); the spigot section (1) includes an inner tube layer (11) and an outer tube layer (12), the axial ends of the outer tube layer (12) are integrally connected to the inner tube layer (11), and a cavity is provided between the inner tube layer (11) and the outer tube layer (12), so that the main body of the outer tube layer (12) and the inner tube layer (11) are connected together. 11) Phase separation, the main body of the outer tube layer (12) is provided with corrugated sections (121) with alternating concave and convex shapes and a snap-fit ​​part that snaps into the anti-detachment groove (21). One of the troughs in the corrugated section (121) is a sealing mounting groove (1211) for installing the sealing ring (3). The sealing ring (3) is installed in the sealing mounting groove (1211). During the process of the socket section (1) and the socket section (2) being connected, the corrugated section (121) can offset the sealing ring (3) so that the sealing ring (3) can be aligned.

2. The suspended sealing connection structure according to claim 1, characterized in that: The snap-fit ​​part includes a connecting tooth (122) integrally connected with the corrugated section (121). The connecting tooth (122) is connected to the corrugated section (121) and the outer tube layer (12) through a connecting ring (123). The connecting ring (123) includes a plurality of concave rings (1231) and convex rings (1232) sleeved on the outer periphery of the connecting tooth (122). The concave rings (1231) and convex rings (1232) are alternately arranged and nested in each other to form a retractable corrugated structure. When the socket section (1) and the socket section (2) are mated, the connecting tooth (122) is compressed by the socket section (2) and can be radially contracted through the connecting ring (123), so that the connecting tooth (122) can enter the anti-detachment groove (21). After the connecting tooth (122) enters the anti-detachment groove (21), it rebounds radially and forms a snap-fit ​​with the anti-detachment groove (21).

3. The suspended sealing connection structure according to claim 1, characterized in that: The snap-fit ​​part is an anti-detachment component (5) that is separately installed from the corrugated section (121). One of the troughs in the corrugated section (121) is an anti-detachment mounting groove (1212) for installing the anti-detachment component (5). The anti-detachment component (5) includes a mounting body (51) installed in the anti-detachment mounting groove (1212) and an anti-detachment tooth (52) integrally connected to the mounting body (51). When the anti-detachment tooth (52) is pressed, it can be folded radially so that the anti-detachment tooth (52) enters the anti-detachment groove (21) and snaps into it.

4. The suspended sealing connection structure according to claim 1, characterized in that: The snap-fit ​​part is an integral anti-detachment wave (124) that is integrally connected to the outer tube layer (12) and arranged in a ring.

5. The suspended sealing connection structure according to claim 4, characterized in that: The outer tube layer (12) has at least one or more socket expansion joints (125) with concave and convex arrangements at at least one of the two axial ends of the integrated anti-detachment wave (124).

6. The suspended sealing connection structure according to claim 4, characterized in that: The outer tube layer (12) has at least one adhesive valley (126) between the integrated anti-detachment wave (124) and the corrugated section (121), and the adhesive valley (126) is fixedly connected to the inner tube layer (11).

7. A pipeline connection unit, characterized in that: Includes a pipe body (4), on which the pipe body (4) is provided with a spigot section (1) and / or a socket section (2) as described in any one of claims 1-6.

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