Gasket and pipeline joint

Abstract

The utility model relates to the technical field of pipeline connection, and discloses a gasket which comprises a first connecting ring and a second connecting ring, a notch is formed in the end, away from the second connecting ring, of the first connecting ring, and the inner diameter of the end, away from the second connecting ring, of the first connecting ring is smaller than that of the other end of the first connecting ring. The minimum inner diameter of the first connecting ring is smaller than the outer diameter of a pipeline connector used for being matched with the first connecting ring. The gasket and the pipeline connector can form a stable connection relation.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline connection, and in particular to a gasket and a pipeline joint. Background Art

[0002] In pipeline connection, in order to increase the sealing of the connection between two pipes, a gasket will be installed between the two pipes to improve the sealing of the pipeline.

[0003] The gasket includes a first connecting ring and a second connecting ring. The first connecting ring is used to connect with the joint, and the second connecting ring is used to cooperate with the flared part of the pipe, so the first connecting ring is cylindrical and the second connecting ring is truncated. The two pipes connected to each other are both installed with joints, the two joints are threaded, and only one pipe has a flared part. When installed, the first connecting ring of the gasket is sleeved on the joint of the other pipe. When the joints of the two pipes are connected, the second connecting ring of the gasket fits on the flared part of the pipe.

[0004] Regarding the above-mentioned related technologies, during actual assembly, there are various angles in the connection direction of the pipe. When the gasket sleeved on the joint is easily adjusted along with the angle of the pipe during installation, the gasket often slips off the joint. Utility Model Content

[0005] In order to strengthen the connection relationship between the gasket and the pipe joint, the present application provides a gasket and a pipe joint.

[0006] In a first aspect, the present application provides a gasket, which adopts the following technical solution:

[0007] A gasket comprises a first connecting ring and a second connecting ring, wherein the end of the first connecting ring away from the second connecting ring is provided with a notch, the inner diameter of the end of the first connecting ring away from the second connecting ring is smaller than the inner diameter of the other end of the first connecting ring, and the minimum inner diameter of the first connecting ring is smaller than the outer diameter of the pipe joint used to cooperate with the first connecting ring.

[0008] By adopting the above technical solution, the inner diameter of the first connecting ring of the gasket is smaller than the inner diameter of the pipe joint. When the gasket is installed on the pipe joint, the pipe joint needs to forcefully open the first connecting ring. The first connecting ring can be deformed appropriately due to the setting of the notch, so that the pipe joint can be squeezed into the gasket, and a tight fit is formed between the gasket and the pipe joint. No matter how the pipes are oriented, when the two pipes are connected, the gasket can form a stable connection relationship with the pipe joint, and the two pipes can be directly connected.

[0009] Optionally, a portion of an edge of one end of the first connecting ring away from the second connecting ring and close to the notch is an edge vertices, and a portion of the edge vertices is configured as a concave structure.

[0010] By adopting the above technical solution, the edge vertex angle of the concave structure can further increase the adaptability range of the gasket, so that the part with the smallest inner diameter of the first connecting ring can also be easily inserted into the joint.

[0011] Optionally, the surfaces of the first connecting ring and the second connecting ring are sprayed with a primer.

[0012] By adopting the above technical solution, the primer enhances the sealing performance of the gasket and effectively prevents leakage of liquid or gas at the pipe joint.

[0013] Optionally, the surfaces of the first connecting ring and the second connecting ring are also covered with a microcapsule layer.

[0014] By adopting the above technical solution, the primer can also make the microcapsule layer adhere better to the gasket. When the gasket is installed between the pipeline and the pipe joint, the microcapsule layer is squeezed and the components inside the capsules after the tiny capsules are broken can be colloids. After the colloid flows out, the connection relationship and sealing between the pipe joint and the gasket can be enhanced.

[0015] In a first aspect, the present application provides a pipe joint, which adopts the following technical solution:

[0016] A pipe joint is applied to a pipe having at least one end with a flared portion, comprising the above-mentioned gasket, and a first joint and a second joint, wherein the first joint is installed on the end of the pipe having the flared portion, the inner wall surface of the first joint is sequentially provided with a first connecting portion, a first inclined portion and a first internally threaded portion, the outer wall surface of the second joint is respectively provided with a second inclined portion, a second connecting portion and a first externally threaded portion, the second inclined portion is fitted with the inner wall of the second connecting ring, the first connecting ring is connected to the second connecting portion, and the end of the second joint away from the second inclined portion is provided with a connector for fixed connection with the other end of the pipe.

[0017] By adopting the above technical solution, the pipe joint design is suitable for pipes with at least one end being a flared portion. Through the cooperation between the first joint and the flared portion of the pipe, and the connection between the second joint and the other end of the pipe, a reliable connection between the pipes is achieved. The special structural design inside the first joint (including the first connecting portion, the first inclined portion and the first internal threaded portion) and the outer wall design of the second joint (including the second inclined portion, the second connecting portion and the first external threaded portion) ensure the tight connection and stable operation of the pipe joint.

[0018] Optionally, the first joint is a half-spliced ​​structure.

[0019] By adopting the above technical solution, the first joint can be directly installed on the expanded pipe.

[0020] Optionally, it also includes a fixed joint for fixing the first joint to the pipe, the fixed joint is provided with a connecting hole, the inner diameter of the connecting hole is larger than the outer diameter of the expanded portion of the pipe, a second internal threaded portion is arranged in the connecting hole, a second external threaded portion is arranged on the outer wall surface of the first joint, and the second external threaded portion and the second internal threaded portion are threadedly connected.

[0021] By adopting the above technical solution, the fixed joint is threadedly connected to the second external threaded portion of the first joint through the second internal threaded portion in the connecting hole, thereby achieving stable installation of the first joint on one end of the flared portion of the pipe.

[0022] Optionally, the connector includes a first connector and a second connector, the second connector is connected to the first connector or the second connector, one end of the first connector is provided with a socket for inserting a straight section of the pipe, the outer wall surface of the second connector is sequentially provided with a third inclined surface, a third connecting portion and a third external threaded portion, the third inclined surface of the second connector is in contact with the inner wall of the second connecting ring, and the third connecting portion is connected to the first connecting ring.

[0023] By adopting the above technical solution, the connector is designed to include a first connector and a second connector, so the second connector has two specifications, which are used to connect different types of pipes. This design increases the versatility and flexibility of the pipe connector, so that it can adapt to more types of pipe connection needs. At the pipe connection site, there is no need to flare the pipe or weld it; at the same time, the special structural design of the connector (such as the third inclined surface, the third connecting portion and the third external threaded portion) ensures a tight fit and stable connection with the second connecting ring.

[0024] Optionally, the second connector and the adapter are detachably connected.

[0025] By adopting the above technical solution, the second connector and the adapter are connected in a detachable manner, and a second connector can be connected to the first adapter or the second adapter. This design makes the maintenance and replacement of the pipeline connector more convenient, and also improves the maintainability of the entire pipeline system.

[0026] In summary, the present application includes at least one of the following beneficial effects:

[0027] 1. Regardless of the orientation of the pipeline, when two pipelines are connected, the gasket can form a stable connection with the pipeline joint, and the two pipelines can be directly connected;

[0028] 2. The pipe joints make it unnecessary to expand the holes on site when connecting the pipes, and can also realize the function of not requiring on-site welding between the pipes and the pipe joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of the gasket in an embodiment of the present application;

[0030] Figure 2 This is a schematic diagram of the overall structure of the gasket in another angle of the embodiment of the present application;

[0031] Figure 3 is a schematic structural diagram of the connection between the first connector and the second connector of an embodiment of the present application;

[0032] Figure 4 is a cross-sectional view of the connection between the first joint and the second joint of the embodiment of the present application;

[0033] Figure 5 is a schematic diagram of the overall structure of the fixed joint fixing the first joint in an embodiment of the present application;

[0034] Figure 6 is a cross-sectional view of a fixed joint in an embodiment of the present application that is fixed to a first joint;

[0035] Figure 7 is an external schematic diagram of the connection between the second connector and the second adapter in an embodiment of the present application;

[0036] Figure 8 It is a cross-sectional view of the connection between the second joint and the second adapter in an embodiment of the present application.

[0037] Explanation of the accompanying drawings: 1. gasket; 11. first connecting ring; 12. second connecting ring; 13. notch; 2. concave structure; 3. first joint; 31. first connecting part; 32. first inclined part; 33. first internal thread; 34. second external thread; 4. second joint; 41. second inclined part; 42. second connecting part; 43. first external thread; 5. connector; 51. first connector; 511. socket; 52. second connector; 521. third inclined surface; 522. third connecting part; 523. third external thread; 6. fixed joint; 61. connecting hole; 62. second internal thread; 10. pipe; 20. flaring part. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-8 This application is described in further detail.

[0039] The present application embodiment discloses a gasket. Figure 1A gasket 1 includes a first connecting ring 11 and a second connecting ring 12 which are coaxially connected. The first connecting ring 11 is cylindrical, and the second connecting ring 12 is truncated. A notch 13 is provided at one end of the first connecting ring 11 away from the second connecting ring 12. Three notches 13 are evenly distributed along the circumference of the first connecting ring 11. The inner diameter of the end of the first connecting ring 11 away from the second connecting ring 12 is smaller than the inner diameter of the other end of the first connecting ring 11, and the inner diameter of the end of the first connecting ring 11 away from the second connecting ring 12 is smaller than the outer diameter of the pipe joint used to cooperate with the first connecting ring 11.

[0040] Reference Figure 1 and Figure 2 The edge of the first connecting ring 11 at one end away from the second connecting ring 12 and close to the notch 13 is an edge vertex, and one of the edge vertexes corresponding to a notch 13 is set as a concave structure 2. The concave structure 2 can further increase the adaptability range of the gasket 1, and it is not easy to be stuck into the pipe joint because the inner diameter of the gasket 1 is too small.

[0041] In order to further enhance the sealing effect of the gasket 1 on the pipeline connection, a primer is sprayed on the surface of the gasket 1, and a microcapsule layer (not shown in the figure) is covered on the primer. The primer allows the microcapsule layer to stably adhere to the surface of the gasket 1.

[0042] The microcapsule layer contains colloids, which can be natural colloids, such as gelatin, latex, etc., or synthetic colloids, such as urethane glue and acrylic emulsion glue. The base coating needs to be compatible with the colloids in the microcapsule layer, so the base coating can be polymer coatings: polymer coatings usually have good adhesion and weather resistance. Common polymers include polyvinyl alcohol, polyester, polyamide, etc.

[0043] The gasket 1 is made of metal. When the gasket 1 is assembled and the pipe joint is tightened, the gasket 1 is subjected to external force, and the tiny capsules of the microcapsule layer are broken, releasing the colloid to bond the gasket 1 to the flared portion 20 of the pipe 10 and the pipe joint.

[0044] The inner wall and the outer wall of the second connecting ring 12 of the gasket 1 are both provided with a plurality of ridges, one ridge is equivalent to a sealing ring, and a plurality of ridges can form a plurality of sealing rings. When the gasket 1 is installed between the flared portion 20 of the pipe 10 and the pipe joint, the three are squeezed against each other, and there is still a slight gap. The colloid in the microcapsule layer is squeezed and ruptured and flows out, which can effectively fill the slight gap, thereby further improving the sealing of the pipe 10 when connected.

[0045] The primer is applied on the gasket 1. After the gasket 1 is installed, because the pipe 10 and the pipe joint are made of different materials, the coating can effectively isolate the potential difference corrosion of the two different materials and also improve the life of the pipe 10.

[0046] The implementation principle of a gasket in the embodiment of the present application is:

[0047] When the gasket 1 and the pipe joint are sleeved, the inner diameter of one end of the first connecting ring 11 of the gasket 1 is smaller than the outer diameter of the pipe joint, so that the gasket 1 can be interference fit on the joint, and the concave structure 2 is further firmly fixed on the pipe joint. The inner diameter of the first connecting ring 11 of the gasket 1 is limited, and it can also adapt to the dimensional tolerance problem caused by the production of the pipe joint.

[0048] The embodiment of the present application also discloses a pipe joint.

[0049] Reference Figure 3 and Figure 4 , a pipe joint, applied to a pipe 10 having at least one end as a flared portion 20. The pipe joint comprises the above-mentioned gasket 1, and a first joint 3 and a second joint 4. When the first joint 3 and the second joint 4 are connected, the gasket 1 is installed between the first joint 3 and the second joint 4. The first joint 3 is installed on the end of the pipe 10 with the flared portion. The inner wall of the first joint 3 is sequentially provided with a first connecting portion 31, a first inclined portion 32 and a first internal thread 33. The first connecting portion 31 contacts the outer wall of the pipe 10, and the first inclined portion 32 fits the outer wall of the flared portion 20 of the pipe 10. The outer wall surface of the second joint 4 is respectively provided with a second inclined portion 41, a second connecting portion 42 and a first external thread portion 43. The second inclined portion 41 of the second joint 4 contacts the inner wall of the flared portion 20 of the pipe 10. The first connecting ring 11 of the gasket 1 is installed on the second connecting portion 42, and the first internal thread 33 is connected to the first external thread portion 43.

[0050] Reference Figure 4 The second joint 4 is provided with a connector 5 at one end away from the second inclined portion 41. The second joint 4 and the connector 5 are coaxially arranged, and the connector 5 is used to be fixedly connected to the other end of the pipeline 10. The second joint 4 and the connector 5 are integrally formed.

[0051] When two pipes 10 are connected, the connector 5 of the second joint 4 is first welded to one of the pipes 10, and after the first joint 3 is installed on the other pipe 10, the pipe opening of the other pipe 10 is expanded with an expander, so that the first joint 3 is installed on the expanded portion 20, and the gasket 1 is installed on the second joint 4, and the first joint 3 and the second joint 4 are locked.

[0052] In order to simplify the installation steps on site, one end of the pipe 10 can be expanded before the pipe 10 leaves the factory, and there is no need to expand it on site. In order to enable the first joint 3 to be installed on the pipe 10 of the expanded portion 20, the first joint 3 is spliced ​​in two halves. The first joint 3 can be fixed by welding when the two halves are spliced ​​and fixed.

[0053] Reference Figure 5 and Figure 6Furthermore, in order to quickly install the two halves of the first joint 3 on the flared portion 20 of the pipe 10, the pipe 10 joint further includes a fixed joint 6 for fixing the first joint 3. The fixed joint 6 is cylindrical, and is provided with a connecting hole 61. The inner diameter of the connecting hole 61 is larger than the outer diameter of the flared portion 20 of the pipe 10, and the fixed joint 6 can directly pass through the flared portion 20 of the pipe 10. The inner wall of the connecting hole 61 is provided with a second internal threaded portion 62, and the outer wall surface of the first joint 3 is provided with a second external threaded portion 34.

[0054] After the fixed joint 6 is inserted into the expanded end of the pipe 10, the first joint 3 is spliced ​​in half and installed on the expanded portion 20 of the pipe 10, and then the second external threaded portion 34 and the second internal threaded portion 62 are threadedly connected, and the first joint 3 is fixedly installed on the expanded portion 20 of the pipe 10.

[0055] Reference Figure 6 and Figure 7 , the second joint 4 and the adapter 5 can also be detachably connected. The adapter 5 includes a first adapter 51 and a second adapter 52, the first adapter 51 is used to connect with the straight section of the pipeline 10, and the second adapter 52 is used to connect with the expanded portion 20 of the pipeline 10. The second joint 4 is connected to the first adapter 51 or the second adapter 52, so the second joint 4 has two specifications.

[0056] Reference Figure 6 One end of the first connector 51 is provided with a socket 511 for inserting the straight section of the pipeline 10, and the first connector 51 and the straight section of the pipeline 10 are fixed by welding when connected.

[0057] Reference Figure 8 The outer wall surface of the second joint 52 is sequentially provided with a third inclined surface 521, a third connecting portion 522 and a third external threaded portion 523. The third inclined surface 521 contacts the inner wall of the second connecting ring 12 of the gasket 1, the third inclined surface 521 and the second inclined portion 41 have the same structure, the first connecting ring 11 is connected to the third connecting portion 522, and the third connecting portion 522 and the second connecting portion 42 have the same structure.

[0058] If both ends of the pipe 10 are flared sections when leaving the factory, the second joint 4 connected to the second joint 52 is used. A gasket 1 is squeezed into the second joint 4 and the second joint 52 respectively, and a first joint 3 is installed outside the flared parts of the two pipes 10. The second joint 4 and the second joint 52 are respectively threadedly connected to the first joints 3 of the two pipes 10, so that the two pipes 10 are connected together, and the connection of the two pipes 10 does not require reaming or welding.

[0059] If the second connector 4 and the adapter 5 are connected in a detachable manner, mainly through threaded connection, the same second connector 4 can be connected to the first adapter 51 or the second adapter 52 .

[0060] It should be noted that when the first joint 3 is spliced ​​in half, the two halves of the first joint 3 can be respectively provided with positioning blocks and positioning holes so that after the first joint 3 is spliced, the ends of the first joint 3 are flush. The splicing method is the existing technology and will not be elaborated in this application.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gasket, comprising a first connecting ring (11) and a second connecting ring (12), wherein an end of the first connecting ring (11) away from the second connecting ring (12) is provided with a notch (13), characterized in that: The inner diameter of one end of the first connecting ring (11) away from the second connecting ring (12) is smaller than the inner diameter of the other end of the first connecting ring (11), and the minimum inner diameter of the first connecting ring (11) is smaller than the outer diameter of a pipe joint used to cooperate with the first connecting ring (11).

2. A gasket according to claim 1, characterized in that: A portion of the edge of one end of the first connecting ring (11) away from the second connecting ring (12) and close to the notch (13) is an edge vertex, and a portion of the edge vertex is arranged as a concave structure (2).

3. A gasket according to claim 2, characterized in that: The surfaces of the first connecting ring (11) and the second connecting ring (12) are sprayed with a primer.

4. A gasket according to claim 3, characterized in that: The surfaces of the first connecting ring (11) and the second connecting ring (12) are also covered with a microcapsule layer.

5. A pipe joint, applied to a pipe (10) having at least one end as a flared portion (20), characterized in that: The invention comprises a gasket as claimed in any one of claims 1 to 4, and a first joint (3) and a second joint (4), wherein the first joint (3) is installed on one end of a pipe (10) having a flared portion (20), the inner wall surface of the first joint (3) is provided with a first connecting portion (31), a first inclined portion (32) and a first internal threaded portion (33) in sequence, the outer wall surface of the second joint (4) is provided with a second inclined portion (41), a second connecting portion (42) and a first external threaded portion (43), the second inclined portion (41) is fitted with the inner wall of the second connecting ring (12), the first connecting ring (11) is connected to the second connecting portion (42), and the end of the second joint (4) away from the second inclined portion (41) is provided with a connector (5) for fixed connection with the other end of the pipe (10).

6. A pipe joint according to claim 5, characterized in that: The first joint (3) is a half-spliced ​​structure.

7. A pipe joint according to claim 6, characterized in that: It also includes a fixed joint (6) for fixing the first joint (3) on the pipeline (10), the fixed joint (6) being provided with a connection hole (61), the inner diameter of the connection hole (61) being larger than the outer diameter of the flared portion (20) of the pipeline (10), a second internal threaded portion (62) being provided in the connection hole (61), a second external threaded portion (34) being provided on the outer wall surface of the first joint (3), and the second external threaded portion (34) and the second internal threaded portion (62) being threadedly connected.

8. A pipe joint according to claim 7, characterized in that: The connector (5) comprises a first connector (51) and a second connector (52); the second connector (4) is connected to the first connector (51) or the second connector (52); one end of the first connector (51) is provided with a socket (511) for inserting a straight section of a pipeline (10); an outer wall surface of the second connector (52) is provided with a third inclined surface (521), a third connecting portion (522) and a third external threaded portion (523) in sequence; the third inclined surface (521) of the second connector (52) is in contact with an inner wall of the second connecting ring (12); and the third connecting portion (522) is connected to the first connecting ring (11).

9. A pipe joint according to claim 8, characterized in that: The second joint (4) and the adapter (5) are detachably connected.

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