A sealing device for pipes
By using the electromagnet adsorption of the flange plates inside the connection box and the clamping of the clamps, the problems of poor sealing and instability in pipe connections are solved, and a stable and sealed pipe connection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN YUECHENG ENVIRONMENTAL PROTECTION VENTILATION EQUIP CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-03
AI Technical Summary
In existing technologies, there are problems with poor sealing and unstable connection when connecting pipelines, especially when connecting the ends of two conveying pipelines through flanges, which can easily lead to cracking.
The sealing device employs components including a connecting box, slide rail, flange, electromagnet, gasket, clamp, and arc plate. The electromagnet attracts the flange to achieve a sealed fit, while the clamp and arc plate provide clamping and support to ensure the stability and sealing of the pipeline connection.
It achieves stability and sealing of the pipe connection, prevents pipe end breakage, ensures connection stability, and prevents displacement.
Smart Images
Figure CN224454035U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline connection equipment technology, and in particular to a sealing device for pipelines. Background Technology
[0002] Natural gas pipelines are pipelines that transport natural gas (including associated gas produced from oil fields) from extraction sites or processing plants to urban gas distribution centers or industrial users. They are also known as gas transmission pipelines. Using natural gas pipelines to transport natural gas is a way to transport large quantities of natural gas on land.
[0003] In the prior art, Chinese Patent Publication No. CN101672719B discloses a pipe sealing device for pipeline hydrostatic testing. This invention is achieved through the following technical solution: a pipe sealing device for pipeline hydrostatic testing, comprising a base plate disposed on the end face of a hydrostatic testing machine base and a sealing assembly sealed and fixedly connected to the end face of the base plate; the sealing assembly includes a pressure ring fixed and sealed to the base plate, and a sealing ring disposed between the base plate and the pressure ring; the pressure ring is provided with an inlet pipe communicating with the sealing ring and an exhaust pipe communicating with the inner cavity of the pipe. This invention is used to perform hydrostatic testing on each steel pipe, that is, to pressurize the steel pipe using a specialized hydrostatic testing machine and maintain it statically for a period of time under certain pressure conditions to inspect welding quality and eliminate residual welding stress.
[0004] To meet transportation needs, multiple transportation pipelines often need to be connected in parallel. The existing parallel connection method generally connects the ends of two transportation pipelines through flanges. This connection method has the problem of poor sealing, and the connection is unstable and unstable. The ends of the two pipelines are prone to breakage. Therefore, the above problems need to be improved. Utility Model Content
[0005] The purpose of this invention is to provide a sealing device for pipelines, which has excellent connection and sealing performance.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a sealing device for pipelines, including a connecting box, the connecting box having an internal channel, slide rails fixedly connected to both sides of the internal channel, flanges slidably connected inside the slide rails, a pipeline disposed inside the flanges, an electromagnet fixedly connected to the end of the flanges, two flanges being provided, one flange having a sealing gasket fixedly connected inside, and the other flange having a sealing groove inside, lower clamps fixedly connected to both sides of the internal side of the connecting box, cylinders fixedly installed on both sides of the top of the connecting box, a push rod provided at the output end of the cylinder, an upper clamp fixedly connected to one end of the push rod, and an arc-shaped plate connected to the connecting box.
[0007] By adopting the above technical solution, when connecting two pipes, flanges are installed on the ends of the two pipes respectively. Then, the flanges are slidably connected to the channel inside the connection box via slide rails. The two flanges move towards each other. When the two flanges approach each other, they are attracted by an electromagnet. At this time, the sealing gasket inside one flange will extend into the sealing groove inside the other flange, and the two flanges seal and fit together, so that the two pipes can form a seal after docking. Then, the cylinder is activated. The cylinder drives the upper clamp to extend and retract through the push rod. The upper clamp wraps around the upper half of the pipe, and the lower clamp wraps around the lower half of the pipe. The upper and lower clamps can clamp the pipe, and the pipe extending outside the connection box is supported by an arc plate, so that the connection between the two pipes is both stable and secure.
[0008] A further feature of this invention is that both the lower clamp and the upper clamp have grooves inside, and a cotton layer is fixedly connected inside the grooves.
[0009] By adopting the above technical solution, the cotton layer is fixed inside the lower and upper clamps through the groove, and the cotton layer is in contact with the pipe, thus protecting the pipe.
[0010] A further feature of this invention is that mounting blocks are fixedly connected to both sides of the arc-shaped plate, and bolts are threaded into the internal parts of the mounting blocks.
[0011] By adopting the above technical solution, the bolt is threaded to the inside of the mounting block, and then the bolt is threaded to the inside of the mounting block and the connecting box, thereby fixing the arc plate to the outside of the connecting box.
[0012] A further feature of this invention is that the number of mounting blocks is two, and the two mounting blocks are symmetrical to each other.
[0013] By adopting the above technical solution, the two mounting blocks are distributed on the left and right sides of the connection box, which improves the connection stability.
[0014] A further feature of this invention is that a column is fixedly connected to the bottom of the arc-shaped plate, and a base is fixedly connected to the bottom of the column.
[0015] By adopting the above technical solution, the column is connected to the bottom of the curved plate, and the chassis supports the column, so that the bottom of the curved plate can be supported.
[0016] A further feature of this invention is that: a first pulley frame is provided on both sides inside the arc-shaped plate, and a support pulley is rotatably connected inside the first pulley frame.
[0017] By adopting the above technical solution, when the pipe slides inside the connecting box, the pipe above the arc plate will contact the support pulley, and the support pulley is rotatably connected inside the first pulley frame, so that the pipe can smoothly enter the interior of the connecting box.
[0018] A further feature of this invention is that a second pulley frame is fixedly connected to both sides inside the arc-shaped plate, and a limit pulley is rotatably connected inside the second pulley frame.
[0019] By adopting the above technical solution, the limiting pulleys are distributed on both sides inside the arc plate, and the left and right sides of the pipe are in contact with the limiting pulleys. The limiting pulleys are rotatably connected inside the second pulley frame, which can prevent the pipe from shifting when it is displaced.
[0020] A further feature of this invention is that a bottom plate is fixedly connected to the bottom of the connecting box, and a moisture-proof pad is fixedly connected to the bottom of the bottom plate.
[0021] By adopting the above technical solution, the base plate supports the connecting box, and the moisture-proof pad provides a moisture-proof effect.
[0022] A further feature of this invention is that there are two lower clamps and two upper clamps, and the two lower clamps and two upper clamps are symmetrical to each other.
[0023] By adopting the above technical solution, since the two pipes are connected, the lower clamp and the upper clamp are divided into two groups, and each group of lower clamps and upper clamps clamps each pipe.
[0024] A further feature of this invention is that the number of the arc-shaped plates is two, and the two arc-shaped plates are distributed on the left and right sides of the connecting box.
[0025] By adopting the above technical solution, two arc-shaped plates support the two pipes respectively.
[0026] The beneficial effects of this utility model are:
[0027] 1. This utility model, through the arrangement of a connecting box, channel, slide rail, flange, pipe, electromagnet, sealing gasket, lower clamp, cylinder, push rod, upper clamp, and arc plate, allows for the connection of two pipes. Flanges are installed at the ends of the two pipes, and then the flanges are slidably connected to the channel inside the connecting box via the slide rail. The two flanges move towards each other, and when they approach each other, the electromagnet attracts them. At this point, the sealing gasket inside one flange extends into the sealing groove inside the other flange, sealing the two flanges together and forming a seal between the two pipes. Then, the cylinder is activated, and the cylinder, through the push rod, drives the upper clamp to extend and retract. The upper clamp wraps around the upper half of the pipe, and the lower clamp wraps around the lower half of the pipe. The upper and lower clamps clamp the pipe, and the pipe extending outside the connecting box is supported by the arc plate, making the connection between the two pipes both stable and secure.
[0028] 2. In this utility model, through the arrangement of the first pulley frame, the supporting pulley, the second pulley frame, and the limiting pulley, when the pipe slides inside the connecting box, the pipe above the arc plate will contact the supporting pulley, and the supporting pulley is rotatably connected inside the first pulley frame, thereby allowing the pipe to smoothly enter the connecting box. The limiting pulley is distributed on both sides inside the arc plate, and the left and right sides of the pipe contact the limiting pulley, and the limiting pulley is rotatably connected inside the second pulley frame, thereby preventing the pipe from shifting during displacement. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 This is a schematic diagram of the structure of this utility model;
[0031] Figure 2 This is a side view of the internal structure of the connecting box of this utility model;
[0032] Figure 3 This is a schematic diagram of the internal structure of the flange of this utility model;
[0033] Figure 4 This is a front view schematic diagram of the lower clamp and upper clamp of this utility model;
[0034] Figure 5 This is a schematic diagram of the internal structure of the arc-shaped plate of this utility model.
[0035] In the diagram, 1. Connecting box; 2. Channel; 3. Slide rail; 4. Flange; 5. Pipe; 6. Electromagnet; 7. Sealing gasket; 8. Lower clamp; 9. Cylinder; 10. Push rod; 11. Upper clamp; 12. Arc plate; 13. Cotton layer; 14. Mounting block; 15. Bolt; 16. Column; 17. Chassis; 18. First pulley frame; 19. Support pulley; 20. Second pulley frame; 21. Limit pulley; 22. Base plate. Detailed Implementation
[0036] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0037] Reference Figure 1-5A sealing device for pipelines includes a connecting box 1. The connecting box 1 has an internal channel 2. Slide rails 3 are fixedly connected to both sides of the channel 2. Flanges 4 are slidably connected inside the slide rails 3. Pipes 5 are installed inside the flanges 4. An electromagnet 6 is fixedly connected to the end of each flange 4. There are two flanges 4; one flange 4 has a sealing gasket 7 fixedly connected inside, and the other flange 4 has a sealing groove inside. Lower clamps 8 are fixedly connected to both sides of the connecting box 1. Cylinders 9 are fixedly installed on both sides of the top of the connecting box 1. A push rod 10 is provided at the output end of each cylinder 9. One end of the push rod 10 is fixedly connected to an upper clamp 11. An arc-shaped plate 12 is provided at the connecting box 1. When connecting two pipes 5... Flanges 4 are installed on the ends of the two pipes 5 respectively. The flanges 4 are then slidably connected to the channel 2 inside the connecting box 1 via the slide rail 3. The two flanges 4 move towards each other. When the two flanges 4 approach each other, they are attracted by the electromagnet 6. At this time, the sealing gasket 7 inside one flange 4 extends into the sealing groove inside the other flange 4, and the two flanges 4 seal and align, allowing the two pipes 5 to form a seal. Then, the cylinder 9 is activated. The cylinder 9 drives the upper clamp 11 to extend and retract via the push rod 10. The upper clamp 11 wraps around the upper half of the pipe 5, and the lower clamp 8 wraps around the lower half of the pipe 5. The upper clamp 11 and the lower clamp 8 clamp the pipe 5, and extend... The pipe 5 extending outside the connecting box 1 is supported by the arc-shaped plate 12, making the connection between the two pipes 5 both stable and secure. The lower clamp 8 and the upper clamp 11 both have grooves inside, and a cotton layer 13 is fixedly connected inside the grooves. The cotton layer 13 is fixed inside the lower clamp 8 and the upper clamp 11 through the grooves, and contacts the pipe 5, protecting it. Mounting blocks 14 are fixedly connected to both sides of the arc-shaped plate 12. Bolts 15 are threaded into the interior of the mounting blocks 14. The bolts 15 are then threaded into the mounting blocks 14 and the interior of the connecting box 1, thus fixing the arc-shaped plate 12 to the outside of the connecting box 1. There are two mounting blocks 14, and... The mounting blocks 14 are symmetrical to each other, and two mounting blocks 14 are distributed on the left and right sides of the connecting box 1 to improve connection stability. A column 16 is fixedly connected to the bottom of the arc-shaped plate 12, and a base 17 is fixedly connected to the bottom of the column 16. The column 16 is connected to the bottom of the arc-shaped plate 12, and the base 17 supports the column 16, ensuring the bottom of the arc-shaped plate 12 is supported. First pulley frames 18 are provided on both sides inside the arc-shaped plate 12. Support pulleys 19 are rotatably connected inside the first pulley frames 18. When the pipe 5 slides inside the connecting box 1, the pipe 5 above the arc-shaped plate 12 will contact the support pulleys 19, and the support pulleys 19 are rotatably connected inside the first pulley frames 18, thus allowing the pipe 5 to smoothly enter the connecting box 1.On both sides inside the arc-shaped plate 12, a second pulley frame 20 is fixedly connected. A limiting pulley 21 is rotatably connected inside the second pulley frame 20. The limiting pulleys 21 are distributed on both sides inside the arc-shaped plate 12. The left and right sides of the pipe 5 contact the limiting pulleys 21, and the limiting pulleys 21 are rotatably connected inside the second pulley frame 20, thus preventing the pipe 5 from shifting during movement. A base plate 22 is fixedly connected to the bottom of the connecting box 1, and a moisture-proof pad is fixedly connected to the bottom of the base plate 22. 22 supports the connecting box 1, and a moisture-proof pad provides moisture protection. There are two lower clamps 8 and two upper clamps 11, symmetrically arranged. Since the two pipes 5 are connected, the lower clamps 8 and upper clamps 11 are divided into two groups, each group clamping each pipe 5. There are two arc-shaped plates 12, distributed on the left and right sides of the connecting box 1, supporting the two pipes 5 respectively.
[0038] In this invention, when connecting two pipes 5, flanges 4 are installed on the ends of the two pipes 5 respectively. The flanges 4 are then slidably connected to the channel 2 inside the connecting box 1 via the slide rail 3. The two flanges 4 move towards each other. When the two flanges 4 approach each other, they are attracted by the electromagnet 6. At this time, the sealing gasket 7 inside one flange 4 extends into the sealing groove inside the other flange 4, and the two flanges 4 seal and align, allowing the two pipes 5 to form a seal after docking. Then, the cylinder 9 is activated, and the cylinder 9 drives the upper clamp 11 to extend and retract via the push rod 10. The upper clamp 11 wraps around the upper half of the pipe 5, and the lower clamp 8 extends around the lower half of the pipe 5. The pipe 5 is clamped by the upper clamp 11 and the lower clamp 8. The pipe 5 extending to the outside of the connecting box 1 is supported by the arc plate 12, making the connection between the two pipes 5 stable and secure. When the pipe 5 slides inside the connecting box 1, the pipe 5 above the arc plate 12 will contact the support pulley 19. The support pulley 19 is rotatably connected inside the first pulley frame 18, so that the pipe 5 can smoothly enter the interior of the connecting box 1. The limiting pulleys 21 are distributed on both sides inside the arc plate 12. The left and right sides of the pipe 5 contact the limiting pulleys 21, and the limiting pulleys 21 are rotatably connected inside the second pulley frame 20, so as to prevent the pipe 5 from shifting during displacement.
[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A sealing device for pipes, comprising a connection box (1), characterised in that: The connecting box (1) has a channel (2) inside. Slide rails (3) are fixedly connected to both sides of the channel (2). Flanges (4) are slidably connected inside the slide rails (3). Pipes (5) are installed inside the flanges (4). Electromagnets (6) are fixedly connected to the ends of the flanges (4). There are two flanges (4). A sealing gasket (7) is fixedly connected inside one flange (4). A sealing groove is opened inside the other flange (4). Lower clamps (8) are fixedly connected to both sides of the connecting box (1). Cylinders (9) are fixedly installed on both sides of the top of the connecting box (1). A push rod (10) is provided at the output end of the cylinder (9). An upper clamp (11) is fixedly connected to one end of the push rod (10). An arc plate (12) is provided on the connecting box (1).
2. A sealing device for a pipe according to claim 1, characterized in that: The lower clamp (8) and the upper clamp (11) are both provided with grooves, and a cotton layer (13) is fixedly connected inside the grooves.
3. A sealing device for pipelines according to claim 1, characterized in that: Mounting blocks (14) are fixedly connected to both sides of the arc plate (12), and bolts (15) are threadedly connected to the inside of the mounting blocks (14).
4. A sealing device for pipelines according to claim 3, characterized in that: The number of mounting blocks (14) is two, and the two mounting blocks (14) are symmetrical to each other.
5. A sealing device for pipelines according to claim 1, characterized in that: The bottom of the arc plate (12) is fixedly connected to a column (16), and the bottom of the column (16) is fixedly connected to a chassis (17).
6. A sealing device for pipelines according to claim 1, characterized in that: The arc plate (12) has a first pulley frame (18) on both sides inside, and a support pulley (19) is rotatably connected inside the first pulley frame (18).
7. A sealing device for pipelines according to claim 1, characterized in that: The other two sides inside the arc plate (12) are fixedly connected to a second pulley frame (20), and the second pulley frame (20) is rotatably connected to a limit pulley (21).
8. A sealing device for pipelines according to claim 1, characterized in that: The bottom of the connecting box (1) is fixedly connected to a base plate (22), and the bottom of the base plate (22) is fixedly connected to a moisture-proof pad.
9. A sealing device for pipelines according to claim 1, characterized in that: The number of the lower clamp (8) and the upper clamp (11) are both two, and the two lower clamps (8) and the two upper clamps (11) are symmetrical to each other.
10. A sealing device for pipelines according to claim 1, characterized in that: There are two arc-shaped plates (12), and the two arc-shaped plates (12) are distributed on the left and right sides of the connecting box (1).