CN220320552U

CN220320552U - Pipe connecting piece and pipe-in-pipe structure using same

Info

Publication number: CN220320552U
Application number: CN202321641310.2U
Authority: CN
Inventors: 时强; 杨楠; 李忠江
Original assignee: Nanjng New Nuclear Compostites Co ltd
Current assignee: Nanjng New Nuclear Compostites Co ltd
Priority date: 2023-06-26
Filing date: 2023-06-26
Publication date: 2024-01-09
Anticipated expiration: 2033-06-26

Abstract

The application relates to a pipeline connecting piece and a pipe-in-pipe structure applying the same, and relates to the field of pipeline connecting technology. The pipeline connecting device comprises connecting pipes used for connecting two adjacent pipelines, wherein the end part of one pipeline is fixedly connected to the connecting pipe, the end part of the other pipeline is glidingly arranged in the connecting pipe in a penetrating manner, and a sealing element used for sealing between the pipeline and the connecting pipe is arranged on the pipeline. The pipe expansion device has the effect of improving the connection tightness between pipes, and can solve the problem that expansion of pipes made of different materials in a pipe-in-pipe structure is asynchronous.

Description

Pipe connecting piece and pipe-in-pipe structure using same

Technical Field

The application relates to the field of pipeline connection technology, in particular to a pipeline connector and a pipe-in-pipe structure using the same.

Background

The traditional waste water pipelines used for discharging industry are mostly made of glass fiber reinforced plastics, and the glass fiber reinforced plastics pipelines have good corrosion resistance effect and are not easy to be corroded by industrial waste water. The traditional pipeline is connected by directly splicing one pipeline into the other pipeline and then fixedly connecting the two inner pipes through gluing. However, when the glass fiber reinforced plastic pipeline is affected by expansion and contraction, the axial length of the pipeline can be changed. The expansion of the inner tube and the outer tube is asynchronous, and the joint is disconnected or crushed, so that the sealability is reduced.

Disclosure of Invention

In order to improve the connection tightness between pipelines and to solve the problem that the axial length of the pipeline is changed due to expansion caused by heat and contraction caused by cold of the pipeline, the application provides a pipeline connecting piece and a pipe-in-pipe structure using the same.

The application provides a pipeline connecting piece adopts following technical scheme:

the utility model provides a pipeline connecting piece, includes the connecting pipe that is used for connecting two adjacent pipelines, one of them the tip fixed connection of pipeline in on the connecting pipe, another one the tip slip of pipeline wears to locate in the connecting pipe, be provided with on the pipeline be used for with sealing between the connecting pipe.

Through adopting above-mentioned technical scheme, fixed connection on one of them pipeline is on the connecting pipe, and another one pipeline slides and pegs graft in the connecting pipe, and seals through the sealing member between this pipeline and the connecting pipe for when two pipelines pass through the connecting pipe intercommunication, can realize axial displacement, in order to adapt to the pipeline and receive the condition that the temperature influence takes place axial dimensional change, reduce two pipeline hookup locations and lead to the condition of fracture owing to expend with heat and contract with cold, and then have the connection effect that the field improves between two pipelines.

Optionally, the opposite ends of the two pipelines are respectively and fixedly connected with a first end pipe and a second end pipe, the second end pipe is fixedly connected to the connecting pipe, the first end pipe slides and penetrates through the connecting pipe, and the sealing element is arranged on the second end pipe.

Through adopting above-mentioned technical scheme, first end pipe and second end pipe pass through sticky fixed connection on the pipeline, communicate with the connecting pipe through first end pipe and second end pipe, realize the intercommunication between two pipelines.

Optionally, the sealing member includes the first annular of seting up in on the first end pipe, first annular is embedded to be equipped with and is used for supporting tightly the first sealing ring of connecting pipe inner wall.

Through adopting above-mentioned technical scheme, first annular is used for spacing to first sealing ring, and then restriction first sealing ring dislocation, supports tight connecting pipe inner wall through first sealing ring, and then realizes the sealed effect between first end pipe and the first sealing ring.

Optionally, the second end pipe peg graft in the connecting pipe, the round first spacing groove has been seted up on the outer wall of second end pipe, the round second spacing groove has been seted up on the inner wall of connecting pipe, first spacing groove aligns with the second spacing groove and forms the spacing collar, the spacing collar is embedded to be equipped with in the spacing collar, the spacing collar is made for elastic material.

Through adopting above-mentioned technical scheme, inlay the spacing collar establish with first spacing groove and second spacing groove between, and then the condition that the axial position takes place for restriction connecting pipe and second end pipe realizes the position fixing of second end pipe in the connecting pipe.

Optionally, a second annular groove is formed in the outer peripheral wall of the second end pipe, and a second sealing ring for propping against the inner wall of the connecting pipe is embedded in the second annular groove.

By adopting the technical scheme, the second annular groove is used for limiting the second sealing ring, and the second sealing ring is used for realizing the sealing between the second end pipe and the connecting pipe.

The utility model provides an use pipe connection's pipe-in-pipe structure, includes inner tube, outer tube and this application provide a pipe connection spare, the outer tube cover is located on the inner tube, inner tube and outer tube are multistage mosaic structure, adjacent two pass through between the inner tube pipe connection spare is connected.

Through adopting above-mentioned technical scheme, outer tube cover is located on the inner tube, reduces the inner tube and collides with the circumstances that leads to breaking, and the outer tube plays the guard action to the inner tube.

Optionally, bulge loop on the outer peripheral wall of outer tube is provided with first hoop board and second hoop board between two the outer tube, first hoop board with all offer on the opposite face of second hoop board and be used for inlaying and establish the holding tank of bulge loop, just first hoop board with can dismantle through the bolt and nut between the second hoop board and be connected.

Through adopting above-mentioned technical scheme, the operator sets up first hoop board and second hoop board between two outer tubes, and bulge loop on two outer tubes all peg graft in the holding tank that corresponds, and the operator passes through bolt and nut with first hoop board and second hoop board fixed, and the restriction takes place axial and radial movement two outer tubes, and then realizes fixed connection between two outer tubes.

Optionally, a support plate for supporting the inner wall of the outer tube is arranged on the connecting tube, and a plurality of through holes are formed in the support plate.

Through adopting above-mentioned technical scheme, set up the backup pad and support on the inner wall of outer tube, reduce two inner tube hookup locations and take place crooked circumstances, be favorable to improving the connection effect between two adjacent inner tubes.

Optionally, a ring plate is fixedly connected to the outer peripheral wall of the connecting pipe, and the supporting plate is detachably and fixedly connected to the ring plate through bolts and nuts.

Through adopting above-mentioned technical scheme, be provided with the annular plate on the connecting pipe, fixed connection can be dismantled on the annular plate to the backup pad, makes things convenient for the operator to install and change the backup pad.

In summary, the present application includes at least one of the following beneficial technical effects:

1. one of the pipelines is fixedly connected to the connecting pipe, and the other pipeline is glidingly inserted into the connecting pipe, so that when the two pipelines are communicated through the connecting pipe, axial movement can be realized to adapt to the condition that the pipeline is affected by temperature and has axial dimensional change, and the connecting effect between the two pipelines is improved in the field;

2. the outer tube is sleeved on the inner tube, so that the cracking condition caused by collision of the inner tube is reduced, and the outer tube plays a role in protecting the inner tube.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is a cross-sectional view of an embodiment of the present application for embodying a first end tube and a second end tube.

Fig. 3 is an enlarged schematic view of the portion a in fig. 2.

Fig. 4 is an enlarged schematic view of a portion B in fig. 2.

Fig. 5 is a schematic structural diagram of an embodiment of the present application for embodying a connection assembly.

Fig. 6 is a cross-sectional view of an embodiment of the present application for embodying a connection assembly.

Fig. 7 is a schematic structural view for embodying the support plate according to the embodiment of the present application.

Reference numerals illustrate: 1. a pipe; 11. a connecting pipe; 12. a first end tube; 13. a second end tube; 2. a seal; 21. a first seal ring; 22. a first ring groove; 3. a first limit groove; 31. the second limit groove; 32. a limit ring; 4. a second seal ring; 41. a second ring groove; 5. a ring plate; 51. a support plate; 52. a through hole; 6. an inner tube; 61. an outer tube; 7. a connection assembly; 71. a first hoop plate; 72. a second hoop plate; 73. a receiving groove; 74. a convex ring.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-7.

Example 1

The embodiment of the application discloses a pipeline connecting piece. As shown in fig. 1 and 2, the pipe connection comprises a connection pipe 11 for connecting two adjacent pipes 1. One end of one pipeline 1 close to the connecting pipe 11 is coaxially provided with a first end pipe 12, one end of the other pipeline 1 close to the connecting pipe 11 is coaxially provided with a second end pipe 13, and the first end pipe 12 and the second end pipe 13 are both fixed on the corresponding pipeline 1 in an adhesive manner. The second end pipe 13 and the second end pipe 13 are both inserted into the connecting pipe 11, wherein the second end pipe 13 is fixedly connected with the connecting pipe 11, and the first end pipe 12 is slidably inserted into the connecting pipe 11.

As shown in fig. 2 and 3, the first end pipe 12 is provided with a sealing member 2 for sealing with the inner wall of the connecting pipe 11, the first sealing member 2 comprises a plurality of first sealing rings 21 sleeved on the first end pipe 12, and the plurality of first sealing rings 21 are arranged at intervals along the axial direction of the first end pipe 12. The outer peripheral wall of the first end pipe 12 is provided with first annular grooves 22 corresponding to the positions of the first sealing rings 21, the first sealing rings 21 are embedded in the corresponding first annular grooves 22, and the first sealing rings 21 are abutted against the inner wall of the connecting pipe 11.

The periphery of the second end pipe 13 is provided with a circle of annular first limit groove 3, and the inner wall of the connecting pipe 11 is provided with a circle of annular second limit groove 31 corresponding to the position of the first limit groove 3. The cross section of first spacing groove 3 and second spacing groove 31 is semi-circular, and first spacing groove 3 and second sealing ring 4 mutually support and enclose into annular spacing ring, and the spacing ring is embedded to be equipped with spacing ring 32, and spacing ring 32 is the elasticity material, and spacing ring 32 is the rubber circle in this embodiment, and spacing ring 32 inlays simultaneously locates in first spacing groove 3 and the second spacing ring, restriction second end pipe 13 and connecting pipe 11 axial displacement.

As shown in fig. 2 and 4, a plurality of second sealing rings 4 are sleeved on the outer wall of the second end pipe 13, and the plurality of second sealing rings 4 are arranged at intervals along the axial direction of the second end pipe 13. The second annular grooves 41 are respectively formed in the positions, corresponding to the second sealing rings 4, of the outer peripheral wall of the second end pipe 13, the second sealing rings 4 are embedded in the corresponding second annular grooves 41, and each second sealing ring 4 is abutted against the inner wall of the connecting pipe 11.

The implementation principle of the embodiment of the application is as follows: the first end pipe 12 and the second end pipe 13 are fixedly connected with the corresponding pipeline 1, the second end pipe 13 is fixedly connected with the connecting pipe 11 through the limiting ring 32, and the first end pipe 12 slides and penetrates through the connecting pipe 11, so that the two pipelines 1 can axially stretch and retract to adapt to the condition that the axial length changes due to expansion and contraction of the pipeline 1, and the connection stability between the two adjacent connecting pipes 11 is improved.

Example 2

As shown in fig. 5 and 6, the embodiment of the application also discloses a pipe-in-pipe structure using a pipe connection piece, the pipe-in-pipe structure using the pipe connection piece comprises a plurality of inner pipes 6 and outer pipes 61, the outer pipes 61 are ductile cast iron pipes, the outer pipes 61 are sleeved outside the inner pipes 6, adjacent inner pipes 6 are connected through the pipe connection piece, and adjacent outer pipes 61 are detachably connected through a connecting assembly 7. An outer tube 61 is sleeved on the inner tube 6, the inner tube 6 is protected through the outer tube 61, and the situation that the inner tube 6 is broken due to collision of external force is reduced.

The connecting assembly 7 comprises a circle of convex rings 74 which are coaxially and fixedly connected to the peripheral walls of the opposite ends of the two outer tubes 61, when the two outer tubes 61 are in butt joint, the two convex rings 74 are aligned, a first hoop plate 71 and a second hoop plate 72 are arranged between the two outer tubes 61, and the opposite surfaces of the first hoop plate 71 and the second hoop plate 72 are respectively provided with a containing groove 73 for containing the two convex rings 74. The first hoop plate 71 and the second hoop plate 72 are detachably and fixedly connected through bolts and nuts. The first hoop plate 71 and the second hoop plate 72 are fixed by bolts and nuts, and the two outer tubes 61 are limited to be shifted in the radial direction by the first hoop plate 71 and the second hoop plate 72; the convex rings 74 on the two outer tubes 61 are embedded in the accommodating grooves 73, and the limiting effect of the accommodating grooves 73 on the convex rings 74 further limits the axial positions of the two outer tubes 61, so that the position fixing between the two outer tubes 61 is realized.

Example 3

As shown in fig. 7, the difference between the present embodiment and embodiment 2 is that a ring plate 5 is fixedly connected to the outer wall of the connecting pipe 11 at the same axis, a circular support plate 51 is disposed on one side of the ring plate 5, the support plate 51 is sleeved on the connecting pipe 11, and the support plate 51 is fixedly connected to the ring plate 5 through bolts and nuts. The outer circumferential surface of the support plate 51 is provided with a plurality of ventilation through holes 52. The connecting pipe 11 is supported on the inner wall of the outer pipe 61 by the support plate 51, so that the bending of the connecting position of the two pipelines 1 is reduced, and the connecting effect between the two adjacent pipelines 1 is improved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A pipe connection, characterized in that: the pipeline connecting device comprises connecting pipes (11) used for connecting two adjacent pipelines (1), wherein one end part of each pipeline (1) is fixedly connected to the corresponding connecting pipe (11), the other end part of each pipeline (1) is glidingly arranged in the corresponding connecting pipe (11), and sealing elements (2) used for sealing the connecting pipes (11) are arranged on the corresponding pipelines (1).

2. A pipe coupling according to claim 1, wherein: the two opposite ends of the pipeline (1) are fixedly connected with a first end pipe (12) and a second end pipe (13) respectively, the second end pipe (13) is fixedly connected to the connecting pipe (11), the first end pipe (12) is slidably arranged in the connecting pipe (11), and the sealing element (2) is arranged on the second end pipe (13).

3. A pipe coupling according to claim 2, wherein: the sealing piece (2) comprises a first annular groove (22) which is formed in the first end pipe (12), and a first sealing ring (21) which is used for propping against the inner wall of the connecting pipe (11) is embedded in the first annular groove (22).

4. A pipe coupling according to claim 2, wherein: the second end pipe (13) is inserted into the connecting pipe (11), a circle of first limit groove (3) is formed in the outer wall of the second end pipe (13), a circle of second limit groove (31) is formed in the inner wall of the connecting pipe (11), the first limit groove (3) and the second limit groove (31) are aligned to form a limit ring, a limit ring (32) is embedded into the limit ring, and the limit ring (32) is made of elastic materials.

5. A pipe coupling according to claim 4, wherein: a second annular groove (41) is formed in the outer peripheral wall of the second end pipe (13), and a second sealing ring (4) used for propping against the inner wall of the connecting pipe (11) is embedded in the second annular groove (41).

6. A pipe-in-pipe structure using a pipe connection, characterized in that: the pipeline connecting piece comprises an inner pipe (6), an outer pipe (61) and the pipeline connecting piece according to any one of claims 1-5, wherein the outer pipe (61) is sleeved on the inner pipe (6), the inner pipe (6) and the outer pipe (61) are of multi-section splicing structures, and two adjacent inner pipes (6) are connected through the pipeline connecting piece.

7. A pipe-in-pipe structure using a pipe connection according to claim 6, wherein: convex rings (74) on the peripheral wall of the outer tube (61), a first hoop plate (71) and a second hoop plate (72) are arranged between the two outer tubes (61), accommodating grooves (73) for embedding the convex rings (74) are formed in opposite faces of the first hoop plate (71) and the second hoop plate (72), and the first hoop plate (71) and the second hoop plate (72) are detachably connected through bolts and nuts.

8. A pipe-in-pipe structure using a pipe connection according to claim 6, wherein: the connecting pipe (11) is provided with a supporting plate (51) which is used for supporting the inner wall of the outer pipe (61), and the supporting plate (51) is provided with a plurality of through holes (52).

9. A pipe-in-pipe structure using a pipe connection according to claim 8, wherein: the outer peripheral wall of the connecting pipe (11) is fixedly connected with a ring plate (5), and the supporting plate (51) is detachably and fixedly connected to the ring plate (5) through bolts and nuts.