Pipeline socket connection structure

Abstract

The utility model relates to the technical field of pipelines, in particular to a pipeline socket connection structure which comprises a check ring connected to the end of a first pipeline and the end of a second pipeline. The sealing rings are arranged on the first pipeline and the second pipeline in a sleeving mode, and the sealing rings abut against the sides, facing the end openings of the pipelines, of the check rings, namely the check rings limit the sealing rings; the foaming elastic body is in butt joint with the first pipeline and the second pipeline; the sleeve is connected to the outer sides of the first pipeline, the foaming elastic body and the second pipeline in a sleeving mode, and the sleeve presses and limits the sealing ring. According to the utility model, a socket butt joint structure is abandoned, flexible butt joint of the pipelines is carried out by using the foaming elastomer, the requirement on butt joint precision is low, and a large gap caused by insufficient butt joint precision can be compressed and made up, the sealing ring is subjected to compression joint sealing treatment through the sleeve and the outer walls of the pipelines, and the sealing ring is limited through the sleeve and the check ring; the pipeline socket connection structure is an independent structure, pipeline production is simplified, and the connection performance and the sealing performance are good.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to a socket connection structure for pipelines. Background Art

[0002] Pipelines are widely used in daily applications and have a large consumption. There are many problems in pipeline connection, especially for large-diameter pipeline connection. Socket connection is a common pipeline connection method, especially used for cast iron pipes and concrete pipes. The conventional socket connection method is to expand one end of a pipeline segment to form a socket (female socket), and form a spigot (male socket) at one end of another pipeline segment. Then, the spigot is inserted into the socket, and sealing materials such as rubber rings or cement mortar are used for sealing. The traditional socket connection structure is complex and difficult to manufacture.

[0003] However, the socket end of the pipeline actually forms a special-shaped pipe, with multiple diameters on one pipe segment, and the mold is complex, which increases the manufacturing cost. It is not suitable for some plastic pipe segments formed by extrusion stretching or winding. During installation, the socket docking accuracy requirement is relatively high, and the maintenance cost is also relatively high compared with ordinary pipelines. Therefore, a new socket connection structure for pipelines is needed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a widely applicable socket connection structure for pipelines in view of the problems existing in the prior art that the socket connection structure of pipelines belongs to special-shaped components, the production is relatively complex, the docking accuracy requirement is relatively high, the applicable pipeline materials are limited, and the manufacturing and maintenance costs are high.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A socket connection structure for pipelines, comprising:

[0007] A retaining ring connected to the end of the first pipeline and the end of the second pipeline;

[0008] A sealing ring sleeved on the first pipeline and the second pipeline, and the sealing ring abuts against the side of the retaining ring facing the pipeline port, that is, the retaining ring limits the sealing ring;

[0009] A foamed elastomer respectively docked with the first pipeline and the second pipeline;

[0010] A sleeve sleeved on the outside of the first pipeline, the foamed elastomer and the second pipeline, and the sleeve crimps and limits the sealing ring.

[0011] Adopting a pipe socket connection structure of the present utility model, the socket docking structure is abandoned. Both the first pipe and the second pipe are of ordinary pipe structures and are not special-shaped pipes, which are convenient to manufacture and have low costs. The first pipe and the second pipe can be directly docked. The flexible docking of the pipes is carried out by using the foamed elastomer, with low requirements for docking accuracy and not easily causing pipe damage. The foamed elastomer is a kind of elastic porous material, which can be compressed to make up for the large gap caused by insufficient docking accuracy. The foamed elastomer has a certain sealing property. The sealing ring is crimped and sealed through the sleeve and the outer wall of the pipe. The sealing ring is limited by the sleeve and the retaining ring, so that the pipe can be directly inserted into the sleeve for docking connection. This pipe socket connection structure is an independent structure, which simplifies the production of the pipe and has good connection performance and sealing performance.

[0012] As a preferred technical solution of the present utility model, several retaining rings and corresponding numbers of sealing rings are provided between the sleeve and the first pipe, and several retaining rings and corresponding numbers of sealing rings are provided between the sleeve and the second pipe; the sealing ring between adjacent retaining ring pairs is limited.

[0013] As a preferred technical solution of the present utility model, the first pipe and the retaining ring thereon are integrally formed members, and the second pipe and the retaining ring thereon are integrally formed members.

[0014] As a preferred technical solution of the present utility model, the foamed elastomer adopts one or more of polyethylene high-foamed elastomer, polyurethane foamed elastomer, polypropylene foamed elastomer, supercritical foamed elastomer, ethylene-vinyl acetate copolymer foamed elastomer, styrene-butadiene rubber foamed elastomer, and ethylene propylene diene monomer foamed elastomer.

[0015] As a preferred technical solution of the present utility model, the foamed elastomer is a prefabricated member.

[0016] As a preferred technical solution of the present utility model, the first pipe, the second pipe, the retaining ring, and the sleeve are members of the same material.

[0017] As a preferred technical solution of the present utility model, the sealing ring adopts a rubber ring.

[0018] As a preferred technical solution of the present utility model, the sleeve includes:

[0019] A main body, located outside the foamed elastomer;

[0020] The wing plates are respectively connected to both sides of the main body. A retaining ring and a sealing ring are arranged in the gap between the wing plate and the first pipe, and a retaining ring and a sealing ring are arranged in the gap between the wing plate and the second pipe. A step is provided between the wing plate and the main body, and the step limits the sealing ring.

[0021] Generally speaking, the sealing ring is elastic, and a certain external force is required to deform the sealing ring to make the sealing ring have good sealing performance. Therefore, the thickness of the sealing ring is greater than the width of the gap. When the sealing ring is arranged in the gap, the sealing ring has a tendency of elastic recovery. The wing plate exerts a reaction force on the sealing ring to keep the sealing ring in a compressed state and maintain good sealing performance.

[0022] As a further preferred technical solution of the present invention, the main body and the two wing plates form a T-shaped member or a cross-shaped member.

[0023] As a further preferred technical solution of the present invention, a chamfer is provided at one end of the wing plate away from the main body, and the chamfer faces the gap side.

[0024] With this structure, since the thickness of the aforementioned sealing ring is greater than the width of the gap, when the sleeve needs to be connected to the pipe, the sleeve and the pipe move relative to each other. The sealing ring does not displace under the limiting action of the retaining ring. By providing the chamfer, the sealing ring is guided into the gap, which is convenient for the assembly operation of the sealing ring and the sleeve.

[0025] As a preferred technical solution of the present invention, both the first pipe and the second pipe are plastic pipes, and the first pipe and / or the second pipe includes:

[0026] A plurality of pipe segments are sequentially heat-melt welded to form a circular plastic pipe, and the length direction of the pipe segments is arranged along the axial direction of the plastic pipe;

[0027] An outer coating is coated on the outer wall of the plastic pipe, and the outer coating includes a prestressed reinforced fiber cloth and a resin, and the resin impregnates the prestressed reinforced fiber cloth.

[0028] With this structure, by coating the prestressed reinforced fiber cloth, the structural strength of the plastic pipe can be enhanced, the wall thickness of the plastic pipe can be greatly reduced, and through the impregnation of the resin, the prestressed reinforced fiber cloth can be bonded and fixed and connected to the plastic pipe as a whole, increasing the integrity and stability of the pipe wall, thereby reducing the cost of the plastic pipe.

[0029] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

[0030] A pipe socket connection structure according to the present utility model abandons the socket docking structure. Both the first pipe and the second pipe are of ordinary pipe structures and are not special-shaped pipes, which are convenient to manufacture and have low costs. The first pipe and the second pipe can be directly docked. The flexible docking of the pipes is achieved by using the foamed elastomer. The requirement for docking accuracy is low, and it is not easy to cause damage to the pipes. The foamed elastomer is a kind of elastic porous material, which can be compressed to make up for the large gap caused by insufficient docking accuracy. The foamed elastomer has a certain sealing property. The sealing ring is crimped and sealed through the sleeve and the outer wall of the pipe. The sealing ring is limited by the sleeve and the retaining ring, so that the pipe can be directly inserted into the sleeve for docking connection. This pipe socket connection structure is an independent structure, which simplifies the production of the pipe and has good connection performance and sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a half-sectional schematic view of the pipe socket connection structure;

[0032] Figure 2 is Figure 1 an enlarged schematic view of part A in

[0033] Figure 3 is an end face schematic view of the pipe.

[0034] Reference signs in the figures:

[0035] 1 - first pipe, 11 - pipe segment, 12 - outer cladding;

[0036] 2 - second pipe;

[0037] 3 - foamed elastomer;

[0038] 4 - retaining ring;

[0039] 5 - sleeve, 51 - main body, 52 - wing plate, 53 - chamfer;

[0040] 6 - sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter of the present invention is limited to the following embodiments. All technologies implemented based on the content of the present invention belong to the scope of the present invention.

[0042] Unless otherwise specified, in the description of the specific embodiments of the present invention, the expression terms indicating the orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the invention product / device / device is commonly used. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present invention or simplifying the description in the specific embodiments, so as to facilitate technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, it should not be construed as a limitation to the present invention.

[0043] In addition, if terms such as "horizontal", "vertical", "hanging", "parallel" appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in the directions of "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still play its role in the solution of the present invention.

[0044] In addition, when expressions such as "first", "second", "third" appear in the terms, they are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0045] In addition, in the description of the embodiments of the present invention, "several", "multiple", "a number of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even can be more than 9.

[0046] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, where terms such as "set", "installed", "connected", "connected", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a connection means commonly used in the art such as welding, riveting, bolting, threaded connection, etc. This connection can be a mechanical connection, an electrical connection or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements.

[0047] In the related art, the socket end of the pipe actually forms a special-shaped pipe, with multiple diameters on one pipe section. The mold is complex and the production is relatively complicated, which raises the manufacturing cost. It is not suitable for some plastic pipe sections formed by extrusion stretching or winding molding, and the applicable pipe materials are limited. When installing, the requirements for the accuracy of socket connection are relatively high, and the manufacturing and maintenance costs are also relatively high compared to ordinary pipes. Therefore, the technical solution of this application is developed. The following will be described in conjunction with Figures 1 to 3 for elaboration.

[0048] Embodiment 1

[0049] As Figure 1 and Figure 2 shown, a socket connection structure for a pipe of the present utility model includes a retaining ring 4, a foamed elastomer 3, a sleeve 5, and a sealing ring 6.

[0050] The retaining ring 4 is fixedly connected to the end of the first pipe 1 and the end of the second pipe 2. The retaining ring 4 can be integrally formed with the pipe during the pipe manufacturing process, or the pipe and the retaining ring 4 can be produced separately and then assembled and connected.

[0051] The sealing ring 6 is sleeved on the first pipe 1 and also sleeved on the second pipe 2. The sealing ring 6 abuts against the side of the retaining ring 4 facing the pipe port, that is, the retaining ring 4 provides one-way limitation to the sealing ring 6.

[0052] The foamed elastomer 3 is respectively butted against the first pipe 1 and the second pipe 2; the foamed elastomer 3 is made of one or more of polyethylene high-foamed elastomer, polyurethane foamed elastomer, polypropylene foamed elastomer, supercritical foamed elastomer, ethylene-vinyl acetate copolymer foamed elastomer, styrene-butadiene rubber foamed elastomer, ethylene propylene diene monomer foamed elastomer. In this embodiment, some polyurethane foamed elastomers can be selected, such as polyurethane foamed glue, polyurethane foam caulking agent, polyurethane foaming material, etc. The foamed elastomer 3 is prefabricated into an annular member with the same cross-section as the pipe in advance.

[0053] In some alternative embodiments, the retaining ring 4 can adopt a split structure, that is, several retaining ring components are arranged at intervals in the circumferential direction of the pipe, that is, the retaining ring 4 may not be a complete annular member.

[0054] The sleeve 5 is sleeved outside the first pipe 1, the foamed elastomer 3, and the second pipe 2. The sleeve 5 presses and limits the sealing ring 6. At least one retaining ring 4 and the corresponding number of sealing rings 6 are provided between the sleeve 5 and the first pipe 1, and at least one retaining ring 4 and the corresponding number of sealing rings 6 are provided between the sleeve 5 and the second pipe 2; the sealing ring 6 between adjacent retaining ring 4 pairs is limited; in this embodiment, as Figure 2As shown, two of the sealing rings 6 are provided on each side of the sleeve 5, and two retaining rings 4 are correspondingly provided to enhance the sealing performance.

[0055] In some alternative embodiments, the sealing ring 6 is a rubber ring.

[0056] In some alternative embodiments, as Figure 2 shown, the sleeve 5 includes a main body 51, wing plates 52 and chamfers 53. The main body 51 is located outside the foamed elastomer 3. The wing plates 52 are respectively connected to both sides of the main body 51. The retaining ring 4 and the sealing ring 6 are arranged in the gap between the wing plate 52 and the first pipe 1, and the retaining ring 4 and the sealing ring 6 are arranged in the gap between the wing plate 52 and the second pipe 2. There is a step between the wing plate 52 and the main body 51, and the step limits the sealing ring 6. One end of the wing plate 52 away from the main body 51 is provided with a chamfer 53, and the chamfer 53 faces the gap side. Generally speaking, the sealing ring 6 has elasticity, and a certain external force is required to deform the sealing ring 6 to make the sealing ring 6 have good sealing performance. Therefore, the thickness of the sealing ring 6 is greater than the width of the gap. When the sealing ring 6 is arranged in the gap, the sealing ring 6 has a tendency of elastic recovery. The wing plate 52 exerts a reaction force on the sealing ring 6 to keep the sealing ring 6 in a compressed state and maintain good sealing performance. Therefore, when the sleeve 5 is connected to the pipe, the sleeve 5 and the pipe move relative to each other, and the sealing ring 6 does not displace under the limiting action of the retaining ring 4. By providing the chamfer 53, the sealing ring 6 is guided into the gap, which is convenient for the assembly operation of the sealing ring 6 and the sleeve 5.

[0057] In some alternative embodiments, the main body 51 and the two wing plates 52 form a T-shaped member or a cross-shaped member. In this embodiment, as Figure 2 shown, a T-shaped member is exemplarily selected.

[0058] In some alternative embodiments, the sleeve 5 can adopt a split structure, that is, several sleeve components are combined into the sleeve 5 for on-site connection and installation.

[0059] In some alternative embodiments, the first pipe 1, the second pipe 2, the retaining ring 4 and the sleeve 5 are members of the same material, such as plastic pipes, concrete pipes, steel pipes, cast iron pipes, etc.

[0060] A construction method for a socket and spigot connection structure of a pipeline according to the present utility model:

[0061] Socket the sealing rings 6 respectively in the opening directions of the ends of the first pipe 1 and the second pipe 2, and the sealing rings 6 abut against the retaining rings 4.

[0062] Install the first pipe 1 in place, and connect the foamed elastomer 3 at the docking end. The foamed elastomer 3 can be connected to the pipe end in a bonded form.

[0063] Install the sleeve 5, and slip the sleeve 5 onto the end of the first pipe 1. During the slipping process, the sealing rings 6 are gradually compressed between the outer wall of the first pipe 1 and the corresponding wing plates 52 under the guidance of the chamfers 53. Due to the one-way stop limit of the retaining rings 4, the positions of the sealing rings 6 do not change until the steps on the sleeve 5 abut against the other sides of the sealing rings 6, forming a two-way limit between the retaining rings 4 and the steps to ensure the normal operation of the sealing rings 6. Of course, in the case of multiple sealing rings 6, the sealing rings 6 between adjacent pairs of retaining rings 4 are limited. That is, the first pipe 1 can be directly inserted into the sleeve 5.

[0064] Then insert the second pipe 2 into the sleeve 5. The sealing rings 6 on the second pipe 2 are pressed and limited by the sleeve 5 in the same way as the sealing rings 6 on the first pipe 1. At the same time, the end of the second pipe 2 abuts against and compresses the foamed elastomer 3. That is, the second pipe 2 can be directly inserted into the sleeve 5.

[0065] It can be seen from the above that the docking of the first pipe 1 and the second pipe 2 is finally realized by the foamed elastomer 3 and the sealing rings 6 for flexible docking, and it can be conveniently inserted and socketed directly through the sleeve 5. The flexible docking has low requirements for connection accuracy and can adaptively fill large gaps caused by low filling accuracy.

[0066] The socket connection structure of the pipes in this embodiment is applicable to all pipes such as large-diameter plastic pipes, steel pipes, cast iron pipes, and concrete pipes.

[0067] A socket connection structure for pipes according to the present utility model abandons the socket docking structure. The first pipe 1 and the second pipe 2 are both ordinary pipe structures, not special-shaped pipes, which are convenient to manufacture and have low costs. The first pipe 1 and the second pipe 2 can be directly docked. The flexible docking of the pipes is achieved by using a foamed elastomer 3, with low requirements for docking accuracy and not easily causing pipe damage. The foamed elastomer 3 is a type of elastic porous material that can be compressed to make up for the large gaps caused by insufficient docking accuracy. The foamed elastomer 3 has a certain sealing property. The sealing ring 6 is crimped and sealed through the sleeve 5 and the outer wall of the pipe, and the sealing ring 6 is limited by the sleeve 5 and the retaining ring 4, enabling the pipe to be directly inserted into the sleeve 5 for docking connection. This socket connection structure for pipes is an independent structure, simplifying the production of pipes and having good connection performance and sealing performance.

[0068] Embodiment 2

[0069] As Figure 3 shown, on the basis of Embodiment 1, both the first pipe 1 and the second pipe 2 are made of plastic pipes. The first pipe 1 and / or the second pipe 2 include an outer coating 12 and a plurality of pipe segments 11.

[0070] The plurality of pipe segments 11 are sequentially heat-melt welded to form a circular plastic pipe. The length direction of the pipe segments 11 is arranged along the axial direction of the plastic pipe, that is, each individual pipe segment 11 is strip-shaped. In this embodiment, the pipe segments 11 can be made of polyethylene (PE) material. The outer coating 12 is coated on the outer wall of the plastic pipe. The outer coating 12 includes a prestressed reinforcing fiber cloth and a resin, and the resin impregnates the prestressed reinforcing fiber cloth.

[0071] In some alternative embodiments, the prestressed reinforcing fiber cloth is made of one or more of glass fiber, basalt fiber, and carbon fiber.

[0072] In some alternative embodiments, the resin is made of epoxy resin, polyurethane resin, acrylic resin, polyester resin, etc.

[0073] Adopting the structure of this embodiment, the structural strength of the plastic pipe can be enhanced by coating the prestressed reinforcing fiber cloth, and the wall thickness of the plastic pipe can be greatly reduced. Through the impregnation of the resin, the prestressed reinforcing fiber cloth can be bonded and fixed, connected to the plastic pipe as a whole, increasing the integrity and stability of the pipe wall, thereby reducing the cost of the plastic pipe.

[0074] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pipe socket connection structure, characterized in that: include: A retaining ring (4) connected to the end of the first pipe (1) and the end of the second pipe (2); A sealing ring (6) is sleeved on the first pipe (1) and the second pipe (2), wherein the sealing ring (6) abuts against a side of the retaining ring (4) facing the pipe port; A foamed elastic body (3) is connected to the first pipe (1) and the second pipe (2) respectively; The sleeve (5) is sleeved on the outside of the first pipe (1), the foamed elastic body (3) and the second pipe (2), and the sleeve (5) is pressed against and limits the sealing ring (6).

2. The pipe socket connection structure according to claim 1, characterized in that: A plurality of the retaining rings (4) and a corresponding number of the sealing rings (6) are provided between the sleeve (5) and the first pipe (1); a plurality of the retaining rings (4) and a corresponding number of the sealing rings (6) are provided between the sleeve (5) and the second pipe (2); The sealing ring (6) between the adjacent pairs of retaining rings (4) is limited.

3. The pipe socket connection structure according to claim 1, characterized in that: The first pipe (1) and the retaining ring (4) thereon are integrally formed components, and the second pipe (2) and the retaining ring (4) thereon are integrally formed components.

4. The pipe socket connection structure according to claim 1, characterized in that: The foamed elastomer (3) is one or more of polyethylene high foamed elastomer, polyurethane foamed elastomer, polypropylene foamed elastomer, supercritical foamed elastomer, ethylene-vinyl acetate copolymer foamed elastomer, styrene-butadiene rubber foamed elastomer, and ethylene-propylene-diene rubber foamed elastomer.

5. The pipe socket connection structure according to claim 1, characterized in that: The foamed elastic body (3) is a prefabricated component.

6. The pipe socket connection structure according to claim 1, characterized in that: The sealing ring (6) is a rubber ring.

7. The pipe socket connection structure according to any one of claims 1 to 6, characterized in that: The sleeve (5) comprises: A main body (51) located outside the foamed elastic body (3); The wing plate (52) is connected to both sides of the main body (51), the retaining ring (4) and the sealing ring (6) are arranged in the gap between the wing plate (52) and the first pipe (1), the retaining ring (4) and the sealing ring (6) are arranged in the gap between the wing plate (52) and the second pipe (2), and a step is arranged between the wing plate (52) and the main body (51), and the step limits the sealing ring (6).

8. The pipe socket connection structure according to claim 7, characterized in that: The main body (51) and the two wing plates (52) form a T-shaped member or a cross-shaped member.

9. The pipe socket connection structure according to claim 7, characterized in that: A chamfer (53) is provided at one end of the wing plate (52) away from the main body (51), and the chamfer (53) faces one side of the gap.

10. The pipe socket connection structure according to any one of claims 1 to 6, characterized in that: The first pipeline (1) and the second pipeline (2) are both plastic pipelines, and the first pipeline (1) and / or the second pipeline (2) include: A plurality of pipe segments (11) are hot-melt welded in sequence to form a circular plastic pipe, wherein the length direction of the pipe segments (11) is arranged along the axial direction of the plastic pipe; The outer cladding (12) is coated on the outer wall of the plastic pipe, and the outer cladding (12) comprises prestressed reinforced fiber cloth and resin, and the resin is impregnated with the prestressed reinforced fiber cloth.

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