Pipeline transition connecting device

Abstract

A pipeline transition connecting device comprises outer connecting pieces connected with pipelines on the two sides in a sealed mode respectively, convex abutting tables are arranged on the sides, away from the pipelines, of the outer connecting pieces, and the two oppositely-arranged convex abutting tables abut against each other in a sealed mode. Clamping positioning hoops which abut against the outer sides of the convex abutting tables are arranged on the outer sides of the convex abutting tables correspondingly, and a plurality of fastening bolts are arranged between the clamping positioning hoops. The external connecting piece is adopted as a transition connecting piece, then the connecting structure on the other side of the external connecting piece is changed into the convex abutting table, then the clamping positioning hoop is used for fastening, the connecting position is moved outwards and changed through the structure, and the connecting strength and operation convenience are guaranteed.

Description

Technical Field

[0001] The present application relates to a pipeline transition connection device. Background Art

[0002] As an important channel for water delivery, pipelines are generally made of multiple sections of pipelines. There are many ways to connect pipelines, some of which are welded, and some are plug-in. However, no matter which method is used, it is difficult to achieve a balance between ease of assembly, maintainability and structural reliability. When connecting large-diameter water supply and drainage pipelines, since the water supply and drainage pipelines themselves are not completely metal pipes, they cannot be completely connected by welding. In addition, due to the large diameter of the pipes, defects are prone to occur during the welding process. Therefore, for large-diameter water supply pipelines, new connection structures need to be considered. Utility Model Content

[0003] In order to solve the above problems, the present application proposes a pipeline transition connection device, including an external connector that is sealed and connected to the pipelines on both sides, a convex abutment platform is provided on the side of the external connector away from the pipeline, two convex abutment platforms are arranged in a sealing abutment with each other, and a clamping positioning hoop that is arranged to abut the outer side of the convex abutment platform is provided on the outer side of the convex abutment platform, and a plurality of fastening bolts are provided between the clamping positioning hoop. The present application adopts an external connector as a transition connector, and then alienates the connection structure on the other side thereof into a convex abutment platform, and then uses a clamping positioning hoop for fastening. Through this structure, the connection position is moved outward and alienated, which ensures the strength of the connection and the convenience of operation.

[0004] Preferably, the external connection member comprises an n-shaped groove sleeved with the pipeline, and the outer side of the n-shaped groove is connected to the outer side of the pipeline by annular welding to form a weld.

[0005] Preferably, a plurality of sealing ring grooves are arranged on the inner side of the n-shaped groove, and sealing rings are arranged in the sealing ring grooves, and the number of the sealing ring grooves is not less than two.

[0006] Preferably, a middle connecting plate is arranged on the side of the n-shaped groove, and the convex abutment platform is arranged at the other end of the middle connecting plate.

[0007] Preferably, an L-shaped outer protective sleeve is also provided on the outer side of the n-shaped groove, and the L-shaped outer protective sleeve is threadedly connected to the outer groove wall of the n-shaped groove. The present application can protect the weld by providing the L-shaped outer protective sleeve, and also has a certain effect of strengthening the connection, thereby ensuring the structural stability after the connection.

[0008] Preferably, an inner sealing ring groove is provided between the convex abutment platforms, and an inner sealing ring is provided in the inner sealing ring groove.

[0009] Preferably, a guide groove is provided on the outer side of one of the two abutting clamping and positioning hoops, and a guide strip is provided on the outer side of the other one to cooperate with the guide groove. The present application adopts the method of cooperating the guide groove and the guide strip, which is more conducive to alignment when assembling the clamping and positioning hoops and the convex abutment platform, and can also ensure the centering of the structure during installation, and ensure the stability of the structure after installation.

[0010] Preferably, an inner annular groove is provided at the outer bottom of the convex abutment platform, and a pre-positioning ring inserted into the inner annular groove is provided at the bottom of the clamping positioning hoop.

[0011] This application can bring the following beneficial effects:

[0012] 1. This application uses an external connector as a transition connector, and then the connection structure on the other side is alienated into a convex abutment platform, and then fastened with a clamping positioning hoop. Through this structure, the connection position is moved outward and alienated, ensuring the strength of the connection and the convenience of operation.

[0013] 2. The present application provides an L-shaped outer protective sleeve, which can protect the weld and also strengthen the connection to a certain extent, thereby ensuring the structural stability after the connection.

[0014] 3. The present application adopts a method of cooperating with the guide groove and the guide strip, which is more conducive to alignment when assembling the clamping positioning hoop and the convex abutment platform, and can also ensure the centering of the structure during installation and ensure the stability of the structure after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of this application;

[0017] Figure 2 This is a schematic diagram of the internal structure of this application;

[0018] Figure 3 This is a schematic diagram of the external structure of this application;

[0019] Figure 4 It is a structural schematic diagram of a clamping positioning hoop. DETAILED DESCRIPTION

[0020] In order to clearly illustrate the technical features of the present solution, the present application is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0021] In the first embodiment, if Figure 1-2As shown, a pipeline transition connection device includes an outer connecting piece 2 which is sealedly connected to the pipelines 1 on both sides respectively, a convex abutment platform 3 is arranged on the side of the outer connecting piece 2 away from the pipeline 1, two oppositely arranged convex abutment platforms 3 are sealedly abutted, and clamping positioning hoops 4 which are abutted against the outer sides of the convex abutment platforms 3 are respectively arranged on the outer sides of the convex abutment platforms 3, and a plurality of fastening bolts 5 are arranged between the clamping positioning hoops 4.

[0022] When in use, an upper outer connector 2 is respectively arranged on the pipe 1 to be connected, and then an upper clamping positioning hoop 4 is arranged on the convex abutment 3 on the other side of the outer connector 2, so that the convex abutment 3 can be tightened and tightened, and finally the final connection operation is completed with a tightening bolt 5.

[0023] In the second embodiment, if Figure 1-4 As shown, a pipeline transition connection device comprises an outer connector 2 respectively connected to pipelines 1 on both sides in a sealed manner, a convex abutment platform 3 is arranged on the side of the outer connector 2 away from the pipeline 1, two convex abutment platforms 3 arranged opposite to each other are arranged in a sealed abutment, and clamping positioning hoops 4 are respectively arranged on the outer sides of the convex abutment platforms 3 to abut the outer sides of the convex abutment platforms 3, and a plurality of fastening bolts 5 are arranged between the clamping positioning hoops 4. The outer connector 2 comprises an n-shaped groove 6 sleeved with the pipeline 1, and the outer side of the n-shaped groove 6 is connected to the outer side of the pipeline 1 by annular welding to form a weld 7. A plurality of sealing ring grooves 8 are arranged on the inner side of the n-shaped groove 6, and a sealing ring is arranged in the sealing ring groove 8, and the number of the sealing ring grooves 8 is not less than two. A middle connecting plate 9 is arranged on the side of the n-shaped groove 6, and the convex abutment platform 3 is arranged at the other end of the middle connecting plate 9. An L-shaped outer protective sleeve 10 is also arranged on the outer side of the n-shaped groove 6, and the L-shaped outer protective sleeve 10 is threadedly connected to the outer groove wall of the n-shaped groove 6. An inner sealing ring groove 11 is provided between the convex abutment platforms 3, and an inner sealing ring is provided in the inner sealing ring groove 11. A guide groove body 12 is provided on the outer side of one of the two abutting clamping and positioning hoops 4, and a guide strip 13 is provided on the outer side of the other to cooperate with the guide groove body 12. An inner annular groove 14 is provided at the outer bottom of the convex abutment platform 3, and a pre-positioning ring 15 inserted into the inner annular groove 14 is provided at the bottom of the clamping and positioning hoops 4.

[0024] When in use, an upper outer connecting piece 2 is respectively arranged on the pipe 1 to be connected, the sealing ring on the inner side of the outer connecting piece 2 ensures the sealing, and the weld 7 on the outer side ensures the connection strength, and then an upper clamping and positioning hoop 4 is arranged on the convex abutment 3 on the other side of the outer connecting piece 2, so that the convex abutment 3 can be tightened and fastened, and the guide groove body 12 and the guide strip 13 on the clamping and positioning hoop 4 are matched with each other, which is more conducive to alignment when assembling the clamping and positioning hoop 4 and the convex abutment 3, and can also ensure the centration of the installation structure, and finally the final connection operation is completed with the fastening bolt 5.

[0025] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A pipeline transition connection device, characterized in that: It comprises an external connection piece which is sealingly connected to the pipelines on both sides respectively, a convex abutment platform is arranged on the side of the external connection piece away from the pipeline, two oppositely arranged convex abutment platforms are sealingly abutted, clamping positioning hoops which are abutted against the outer sides of the convex abutment platforms are respectively arranged on the outer sides of the convex abutment platforms, and a plurality of fastening bolts are arranged between the clamping positioning hoops.

2. A pipeline transition connection device according to claim 1, characterized in that: The external connection piece comprises an n-shaped groove which is sleeved with the pipeline, and the outer side of the n-shaped groove is connected to the outer side of the pipeline by annular welding to form a weld.

3. A pipeline transition connection device according to claim 2, characterized in that: A plurality of sealing ring grooves are arranged on the inner side of the n-shaped groove, and sealing rings are arranged in the sealing ring grooves, and the number of the sealing ring grooves is not less than two.

4. A pipeline transition connection device according to claim 2, characterized in that: A middle connecting plate is arranged on the side of the n-shaped groove, and the convex abutting platform is arranged on the other end of the middle connecting plate.

5. A pipeline transition connection device according to claim 2, characterized in that: An L-shaped outer protective sleeve is also arranged on the outer side of the n-shaped groove, and the L-shaped outer protective sleeve is threadedly connected to the outer groove wall of the n-shaped groove.

6. A pipeline transition connection device according to claim 1, characterized in that: An inner sealing ring groove is arranged between the convex abutment platforms, and an inner sealing ring is arranged in the inner sealing ring groove.

7. A pipeline transition connection device according to claim 1, characterized in that: A guide groove body is arranged on the outer side of one of the two abutting clamping and positioning hoops, and a guide strip matched with the guide groove body is arranged on the outer side of the other one.

8. A pipeline transition connection device according to claim 7, characterized in that: An inner annular groove is arranged at the outer bottom of the convex abutment platform, and a pre-positioning ring inserted into the inner annular groove is arranged at the bottom of the clamping positioning hoop.

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