A pipe connection structure

Abstract

The utility model discloses a pipeline connecting structure, including the pipeline of connecting, pipeline includes pipeline one and pipeline two, and the end portion junction of pipeline one and pipeline two is equipped with the bulge along the outer wall of pipeline, and the bulge is equipped with at least one sealed recess, and the sealing ring is nested in the sealed recess, the outside of the end portion junction of pipeline one and pipeline two is equipped with the sleeve, and the sleeve is closely connected on the outside of the bulge, and the sleeve is equipped with the fusion area, and this scheme can realize the safe sealing of pipeline and can improve construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection, specifically to a pipe connection structure. Background Technology

[0002] In the field of pipe connections, especially in the connection and construction of plastic pipe joints, two problems currently exist: firstly, the safety and reliability of the seals need improvement, and secondly, construction efficiency is low. One existing method for connecting plastic pipes is butt welding, which, while safe and reliable, is slow and requires ample space, necessitating the frequent movement and relocation of heavy welding equipment, resulting in significant time and labor costs. Another method is sealing ring connection, which is easy to install and efficient, but its sealing performance often fails to meet usage requirements; under external forces, the sealing ring is prone to deviating, leaking the transported medium. Therefore, optimizing plastic pipe joint connection methods to ensure both safety and faster construction efficiency is a problem that needs to be addressed in pipe connection. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a pipe connection structure that can be safely sealed and improve construction efficiency.

[0004] To solve the above problems, this utility model provides the following technical solution:

[0005] A pipe connection structure includes pipes to be connected. The pipes include a pipe 1 and a pipe 2 located on the left and right sides respectively and having the same outer diameter. The end connection of pipe 1 and pipe 2 is provided with a protrusion along the outer wall of the pipe. The protrusion is provided with at least one sealing groove, and a sealing ring is fitted inside the sealing groove. A sleeve is fitted on the outside of the end connection of pipe 1 and pipe 2, and the sleeve is tightly fitted on the outside of the protrusion. The sleeve is provided with a melting zone.

[0006] The technical solution of this utility model also includes that a flange is provided at the connection between the first pipe and the second pipe, and the flange is fixed by plastic screws; the height of the flange is the same as the height of the protrusion.

[0007] The technical solution of this utility model also includes that the melting zone is located on the inner side of both ends of the sleeve, and an electric heating wire is arranged in the melting zone.

[0008] The technical solution of this utility model also includes that the sleeve and the pipe are made of the same material and are both made of polymer resin.

[0009] The technical solution of this utility model also includes that the protrusion is provided with two sealing grooves, the distance between the two sealing grooves is not less than 10mm, the width of the sealing groove is not less than 10mm, and the depth of the sealing groove is not less than 1 / 2 of the diameter of the sealing ring cross section.

[0010] The technical solution of this utility model also includes that the inner diameter of the sealing ring is not greater than 85% of the outer diameter of the pipe end, and the sealing ring is made of rubber.

[0011] The technical solution of this utility model also includes that the length of the sleeve is not less than 30mm.

[0012] The technical solution of this utility model also includes that the length of the melting zone is not less than 10 mm.

[0013] The beneficial effects of this utility model are as follows: Compared with the prior art, the purpose of this utility model is to provide a safe, sealed, and efficient pipe connection structure. The pipe connection is provided with a sealing groove and a sealing ring. A sleeve is fitted on the outside of the connection, and the sleeve is provided with a melting zone. Through the setting of the sealing ring, sleeve, and melting zone, the sealing safety of the connection between adjacent pipes is effectively improved. Compared with the prior art, the construction is convenient, and the melting zone is located on the inside of the sleeve. The melting zone is provided with an electric heating wire. Compared with the existing hot melt butt welding process, the construction efficiency and sealing effect can be further improved. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the pipe connection structure in a specific implementation method;

[0016] Figure 2 for Figure 1 The finished product rendering;

[0017] Figure 3 This is a structural diagram of the flange connection in a specific implementation method.

[0018] In this diagram, 1 represents pipe one, 2 represents pipe two, 3 represents a protrusion, 4 represents a sealing groove, 5 represents a sealing ring, 6 represents a sleeve, 7 represents a melting zone, and 8 represents a flange. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "horizontal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] As shown in the attached figures, a pipe connection structure includes pipes to be connected. The pipes include pipe 1 and pipe 2, which are located on the left and right sides respectively and have the same outer diameter. The ends of pipe 1 and pipe 2 are provided with protrusions 3 along the outer wall of the pipes. The protrusions 3 are provided with two sealing grooves 4. The sealing rings 5 ​​are tightly fitted in the sealing grooves 4. To ensure the sealing effect of the sealing rings 5, the inner diameter of the sealing rings 5 ​​is not greater than 85% of the outer diameter of the pipe ends. The sealing rings 5 ​​are made of highly resilient rubber.

[0022] A sleeve 6 is fitted on the outer side of the connection between the ends of pipe 1 and pipe 2. The sleeve 6 is tightly fitted on the outer side of the protrusion 3. It should be noted that the inner diameter of the sleeve 6 is slightly larger than the outer diameter of the pipe connection by 1-2 mm. The sleeve 6 is prefabricated on the end of pipe 1 after the pipe is manufactured, while exposing the sealing groove 4 for subsequent operation. The sleeve 6 and the pipe are made of the same material and are both made of high polymer resin material, such as PE, PVC, PP, etc.

[0023] The sleeve 6 is provided with a melting zone 7, which is located on the inner side of both ends of the sleeve 6. The melting zone 7 is provided with electric heating wires, which can be made of conductive and heat-conducting copper wires. After the sleeve 6 and the sealing ring 5 are assembled, the melting zone 7 can be heated to perform secondary sealing electrofusion welding, so that the melting zone 7 is partially combined with the pipeline to form a secondary protective seal and improve the sealing effect.

[0024] In another embodiment, such as Figure 3As shown, flanges 8 are provided at the connection points of pipe 1 and pipe 2, and the flanges 8 are fixed with plastic screws; the height of flange 8 is the same as the height of protrusion 3. The flange connection can effectively fix pipe 1 and pipe 2, facilitate construction, and facilitate the subsequent installation of sleeve 6.

[0025] In the pipe connection structure of this application, the sleeve 6 is prefabricated at the end of pipe 1. During connection, the flange 8 is connected first, and then the sealing rings 5 ​​of pipe 1 and pipe 2 are fitted into the sealing groove 4 with a certain tightening force. With the help of external force, the sleeve 6 located on pipe 1 is fitted into the end of pipe 2. At this time, the sealing ring 5 is simultaneously and tightly pressed by the sleeve 6 and the pipe, thus achieving a sealing effect. The molten zone 7 of the sleeve 6 is subjected to secondary sealing electrofusion welding by electric heating. The heating temperature is set to 180-260℃, and the heating time is set to 10-40 minutes. After the temperature of the molten zone 7 cools and sets, the pipe sealing connection is achieved.

[0026] In this embodiment, the pipe connection method combines flange 8 connection, sealing ring 5, sleeve 6 and electrofusion welding to achieve a fast, efficient, safe and reliable joint connection of the pipe.

[0027] Taking a DN560-1.0MPa water supply pipe as an example, the pipe is injection molded on an injection molding machine to form the end with double sealing grooves 4. The sleeve 6 with its inner wall cut rounded is then pushed into the end of the pipe A by an jacking device to prefabricate a semi-finished product. At this time, the exposed sealing grooves 4 and the surrounding parts need to be wrapped with plastic wrap or other packaging materials to prevent dust and facilitate subsequent electrofusion welding. Upon arrival at the construction site, remove the dustproof packaging and immediately install the sealing ring 5. At this point, external force is required to insert the sleeve 6 of pipe 1 onto the end protrusion 3 of pipe 2. The sealing ring 5 and sleeve 6 are now sealed. To enhance the sealing connection, the conductive and heat-conducting melting zone 7 can be heated and melted by external electricity. Set the heating temperature to 220℃ to melt the plastic pipe in the melting zone 7. The melting time is approximately 20 minutes. Then, a cooling operation is performed, with a cooling time ranging from 30 to 120 minutes. Finally, the melting zone is fused with the outer wall of the pipe, thereby achieving a fast, efficient, safe, and reliable joint connection for the DN560-1.0Mpa water supply pipeline.

[0028] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and all such modifications or substitutions should be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A pipe connection structure, characterized in that: The system includes pipes to be connected, comprising pipe one and pipe two located on the left and right sides respectively and having the same outer diameter. The ends of pipe one and pipe two are provided with protrusions along the outer wall of the pipes. Each protrusion has at least one sealing groove, and a sealing ring is fitted inside the sealing groove. A sleeve is fitted on the outside of the end connection between pipe one and pipe two, and the sleeve is tightly fitted on the outside of the protrusion. The sleeve has a melting zone.

2. The pipe connection structure according to claim 1, characterized in that: Flanges are provided at the connection points of pipe one and pipe two, and the flanges are fixed with plastic screws; the height of the flanges is the same as the height of the protrusion.

3. The pipe connection structure according to claim 1, characterized in that: The melting zone is located inside both ends of the sleeve, and electric heating wires are arranged in the melting zone.

4. The pipe connection structure according to claim 1, characterized in that: The sleeve and the pipe are made of the same material, both of which are made of polymer resin.

5. The pipe connection structure according to claim 1, characterized in that: The protrusion is provided with two sealing grooves, the distance between the two sealing grooves is not less than 10mm, the width of the sealing groove is not less than 10mm, and the depth of the sealing groove is not less than 1 / 2 of the diameter of the sealing ring cross section.

6. The pipe connection structure according to claim 1, characterized in that: The inner diameter of the sealing ring is no greater than 85% of the outer diameter of the pipe end, and the sealing ring is made of rubber.

7. The pipe connection structure according to claim 1, characterized in that: The length of the sleeve is not less than 30mm.

8. The pipe connection structure according to claim 7, characterized in that: The length of the molten zone is not less than 10 mm.

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