Pipeline maintenance sealing device

Abstract

The utility model discloses a pipeline maintenance sealing device, comprising a pipeline, wherein a sealing device is movably installed at one end inside the pipeline, the sealing device is composed of a connecting frame, a fixing pipe, a clamping unit, an inflation unit and an elastic airbag, the front and rear ends of the connecting frame are respectively provided with the clamping units, the connecting frame is movably installed at the outer end of the pipeline through the clamping unit, a fixing pipe is welded at the left center of the connecting frame, and the fixing pipe is located inside the pipeline, and vent holes are arranged in an equidistant circular array around the left end of the fixing pipe, and a first fixing plate is arranged at the left end of the vent hole, the pipeline maintenance sealing device realizes rapid and effective sealing of the thermal pipeline through the design of the clamping unit, the buffer pad, the inflation unit, the driving rod and the vent pipe and other components, and improves the stability and reliability of the sealing device, at the same time, the pipeline maintenance sealing device is easy to operate, compact in structure, and can be applicable to various thermal pipeline maintenance scenarios.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal pipeline maintenance, in particular to a pipeline maintenance sealing device. Background Art

[0002] During the maintenance and construction of thermal pipelines, the thermal pipelines after welding and repair are usually stored outdoors nearby. Due to the complex environment of the construction site, animals often enter the pipelines for heating or roosting. Due to the long length of the thermal pipelines, animals entering the pipelines are often difficult to be found, which may lead to blockage during the subsequent pipeline trial operation, causing serious economic losses and safety hazards;

[0003] At present, the sealing of pipe openings on the market is usually done by simply binding them with three-proof cloth or waterproof cloth. Although this method can achieve sealing effect to a certain extent, its sealing effect is not ideal, and the operation is cumbersome, and it is difficult to ensure the tightness and durability of the seal. Some devices that use air bags to seal the pipe openings require an additional air pump, which not only increases the complexity of the operation, but also makes the air pump inconvenient to carry. For this reason, we propose a pipeline maintenance sealing device. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model discloses a pipeline maintenance sealing device, which adopts the technical solution of comprising a pipeline, wherein a sealing device is movably installed at one end inside the pipeline, wherein the sealing device is composed of a connecting frame, a fixing pipe, a clamping unit, an inflation unit and an elastic airbag, wherein the front and rear ends of the connecting frame are respectively provided with clamping units, wherein the connecting frame is movably installed at the outer end of the pipeline through the clamping unit, wherein a fixing pipe is welded at the center of the left side of the connecting frame, and the fixing pipe is located inside the pipeline, wherein vent holes are arranged in an equidistant circular array around the left end of the fixing pipe, wherein a first fixing plate is arranged at the left end of the vent hole, and the first fixing plate is fixed to the first fixing plate. The airbag is fixedly installed on the left end of the fixed tube, a second fixed plate is provided at the right end of the vent hole, and the second fixed plate is fixedly connected to the outer side of the fixed tube, an elastic airbag is fixedly installed between the second fixed plate and the first fixed plate, the outer surface of the elastic airbag is movably contacted with the inner wall of the pipe, an exhaust check valve is provided on the right side of the second fixed plate, and the exhaust check valve is fixedly installed on the inner side of the fixed tube, an intake check valve is provided on the upper right side of the exhaust check valve, and the intake check valve is fixedly installed on the top of the fixed tube, an inflation unit for inflating the elastic airbag is provided at the right end of the interior of the fixed tube, and a detachable driving rod is provided at the right end of the inflation unit.

[0005] As a preferred technical solution of the utility model, the clamping unit includes a slide groove, a tension spring, a slide rail and a clamping block. Two slide grooves are provided, and the slide grooves are respectively provided at the front and rear ends of the connecting frame. The inner upper and lower ends of the slide groove are respectively provided with slide rails. A clamping block is slidably installed on the slide rail. The opposite side of the clamping block is respectively provided with a tension spring. One end of the tension spring is respectively fixedly connected to the clamping block, and the other end of the tension spring is respectively fixedly connected to the inner side of the slide groove. Through the coordinated use of the slide groove and the slide rail, the clamping block can slide flexibly on the connecting frame to adapt to pipes of different sizes. The setting of the tension spring enables the clamping block to automatically move toward the outer wall of the pipe after manual adjustment, and generate sufficient clamping force to ensure a tight connection between the sealing device and the pipe.

[0006] As a preferred technical solution of the utility model, a buffer pad is fixedly installed on one side of the clamp block contacting the pipeline, and the buffer pad is a silicone pad. The silicone pad has good elasticity and wear resistance, and can buffer the impact force between the clamp block and the pipeline to avoid damage to the pipeline.

[0007] As a preferred technical solution of the utility model, the inflation unit includes a support frame, a compression spring, a guide rail, a piston plate and a connecting seat. The support frame is a "cross" shaped structure. The support frame is fixedly installed in the middle of the inner side of the fixed tube. The right side of the support frame is fixedly installed with a compression spring. The other end of the compression spring is fixedly connected to the left side of the piston plate slidably installed inside the fixed tube. The slots arranged on the front and rear sides of the piston plate are respectively slidably connected with the guide rails arranged on the front and rear sides of the fixed tube. The center of the right side of the piston plate is fixedly installed with a connecting seat, and the connecting seat is penetrated in the through hole arranged in the center of the connecting frame. The "cross" shaped structure of the support frame provides stable support for the compression spring and the piston plate, ensuring the smooth progress of the inflation process. The sliding connection between the piston plate and the guide rail enables the piston plate to maintain a stable trajectory during the movement, avoiding the occurrence of offset and jamming. At the same time, the setting of the connecting seat enables the drive rod to be easily installed and disassembled, providing convenience for the inflation operation. In addition, the length of the device can be shortened, so that it is convenient for the user to carry it.

[0008] As a preferred technical solution of the utility model, the driving rod is a T-shaped structure, and the outer thread arranged at the left end of the driving rod is threadedly connected with the inner thread arranged at the inner side of the connecting seat. The design of the driving rod facilitates the user to drive the inflation unit to inflate the elastic airbag.

[0009] As a preferred technical solution of the utility model, it also includes a deflation pipe, a pipe cover and a sealing ring. The deflation pipe is arranged on the right side of the second fixing plate. One end of the deflation pipe passes through the second fixing plate and is connected to the inside of the elastic airbag. The other end of the deflation pipe passes through the connecting frame and is threadedly connected to the pipe cover. A sealing ring is provided on the right end of the outer side of the deflation pipe, and the sealing ring is fixedly connected to the right side of the connecting frame. The coordinated use of the deflation pipe, the pipe cover and the sealing ring provides a convenient deflation function for the sealing device. When the seal needs to be released, only the pipe cover needs to be opened, and the gas in the elastic airbag can be quickly discharged through the deflation pipe. The setting of the sealing ring ensures the sealing between the deflation pipe and the connecting frame to prevent gas leakage.

[0010] Beneficial effects of the utility model: the utility model manually pulls the clamping blocks separately to make the clamping blocks slide along the slide rails in the slide grooves, thereby adapting to pipes of different sizes; by loosening the clamping blocks, under the action of the tension spring, the clamping blocks automatically move toward the outer wall of the pipe and clamp at the pipe mouth of the pipe, thereby ensuring a tight connection between the sealing device and the pipe;

[0011] After the driving rod is firmly installed on the connecting seat, a thrust is then applied to the inside of the fixed tube, and the driving seat drives the piston plate to squeeze the compression spring. During this process, the piston plate pushes the air in the fixed tube into the elastic airbag through the exhaust check valve and the vent hole. Subsequently, the driving rod is released, and the compression spring assists the piston plate to reset. At this time, negative pressure is formed inside the fixed tube, prompting external air to enter the fixed tube through the intake check valve. By repeatedly pushing the driving rod, the elastic airbag is gradually inflated until its outer surface is tightly fitted with the inner wall of the pipe, thereby achieving rapid and effective sealing of the pipe opening;

[0012] In summary, the pipeline maintenance sealing device, through the design of components such as the clamping unit, the buffer pad, the inflation unit, the drive rod and the venting pipe, achieves rapid and effective sealing of the thermal pipeline, and improves the stability and reliability of the sealing device. At the same time, the pipeline maintenance sealing device is easy to operate and has a compact structure, and can be applied to various thermal pipeline maintenance scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the utility model;

[0016] Figure 4 It is a partial enlarged structural schematic diagram of point A of the utility model.

[0017] In the figure: 1 connecting frame, 2 fixing pipe, 3 pipeline, 4 clamping unit, 41 slide groove, 42 tension spring, 43 slide rail, 44 clamping block, 45 buffer pad, 5 inflation unit, 51 support frame, 52 compression spring, 53 guide rail, 54 piston plate, 55 connecting seat, 6 driving rod, 7 first fixing plate, 8 second fixing plate, 9 elastic airbag, 10 exhaust check valve, 11 intake check valve, 12 vent hole, 13 exhaust pipe, 14 pipe cover, 15 sealing ring. DETAILED DESCRIPTION

[0018] Example 1

[0019] like Figures 1 to 4As shown, the utility model discloses a pipeline maintenance sealing device, which adopts the technical solution of comprising a pipeline 3, wherein a sealing device is movably installed at one end of the interior of the pipeline 3, the sealing device is composed of a connecting frame 1, a fixing pipe 2, a clamping unit 4, an inflation unit 5 and an elastic airbag 9, the front and rear ends of the connecting frame 1 are respectively provided with the clamping units 4, the connecting frame 1 is movably installed on the outer end of the pipeline 3 through the clamping unit 4, the clamping unit 4 comprises a slide groove 41, a tension spring 42, a slide rail 43 and a clamping block 44, two slide grooves 41 are provided, the slide grooves 41 are respectively provided at the front and rear ends of the connecting frame 1, the upper and lower ends of the inner side of the slide groove 41 are respectively provided with slide rails 43, a clamping block 44 is slidably installed on the slide rail 43, and the clamping block 44 is respectively fixed on the side in contact with the pipeline 3 A buffer pad 45 is installed, and the buffer pad 45 is a silicone pad. A tension spring 42 is respectively arranged on the opposite side of the clamp block 44, and one end of the tension spring 42 is respectively fixedly connected to the clamp block 44, and the other end of the tension spring 42 is respectively fixedly connected to the inner side of the slide groove 41. The clamp block 44 is manually pulled to slide along the slide rail 43 in the slide groove 41. After the clamp block 44 moves to a suitable position, the clamp block 44 is slowly released. Under the action of the tension spring 42, the clamp block 44 automatically moves toward the outer wall of the pipe 3 and clamps at the pipe mouth of the pipe 3 to ensure a tight connection between the sealing device and the pipe 3. A fixed pipe 2 is welded at the left center of the connecting frame 1, and the fixed pipe 2 is located inside the pipe 3. The left end of the fixed pipe 2 is equidistant from the surrounding circular A vent hole 12 is arranged in a peripheral array, a first fixing plate 7 is arranged at the left end of the vent hole 12, and the first fixing plate 7 is fixedly installed on the left end of the fixed tube 2, a second fixing plate 8 is arranged at the right end of the vent hole 12, and the second fixing plate 8 is fixedly connected to the outer side of the fixed tube 2, an elastic air bag 9 is fixedly installed between the second fixing plate 8 and the first fixing plate 7, the outer surface of the elastic air bag 9 is in active contact with the inner wall of the pipe 3, an exhaust check valve 10 is arranged on the right side of the second fixing plate 8, and the exhaust check valve 10 is fixedly installed on the inner side of the fixed tube 2, an intake check valve 11 is arranged on the upper right side of the exhaust check valve 10, and the intake check valve 11 is fixedly installed on the top of the fixed tube 2, and a valve for inflating the elastic air bag 9 is arranged at the right end of the interior of the fixed tube 2 Inflatable unit 5, the right end of the inflatable unit 5 is provided with a detachable driving rod 6, the inflatable unit 5 comprises a support frame 51, a compression spring 52, a guide rail 53, a piston plate 54 and a connecting seat 55, the support frame 51 is a "cross" shaped structure, the support frame 51 is fixedly installed in the middle of the inner side of the fixed tube 2, the right side of the support frame 51 is fixedly installed with a compression spring 52, the other end of the compression spring 52 is fixedly connected to the left side of the piston plate 54 slidably installed on the inner side of the fixed tube 2, the card grooves arranged on the front and rear sides of the piston plate 54 are respectively slidably connected with the guide rails 53 arranged on the front and rear sides of the fixed tube 2, the right center of the piston plate 54 is fixedly installed with a connecting seat 55, and the connecting seat 55 is penetrated in the through hole arranged in the center of the connecting frame 1, and the driving rod 6 is a T-shaped structure,The external thread arranged at the left end of the outer side of the driving rod 6 is threadedly connected with the internal thread arranged at the inner side of the connecting seat 55. By installing the driving rod 6 on the connecting seat 55 and then pushing it toward the inside of the fixed tube 2, the connecting seat 55 drives the piston plate 54 to squeeze the compression spring 52. At the same time, the piston plate 54 discharges the air inside the fixed tube 2 into the elastic airbag 9 through the exhaust check valve 10 and the vent hole 12. Then, the driving rod 6 is released. Under the action of the compression spring 52, the piston plate 54 is reset. At this time, negative pressure is generated inside the fixed tube 2, so that the external air enters the inside of the fixed tube 2 through the intake check valve 11. By repeatedly pushing the driving rod 6, the elastic airbag 9 is pressed. The inside of the elastic airbag 9 is inflated, and after the elastic airbag 9 is expanded, its outer surface is tightly fitted with the inner wall of the pipe 3, thereby completing the sealing of the pipe opening of the pipe 3. It also includes a deflation pipe 13, a pipe cover 14 and a sealing ring 15. The deflation pipe 13 is arranged on the right side of the second fixing plate 8. One end of the deflation pipe 13 passes through the second fixing plate 8 and is connected to the inside of the elastic airbag 9. The other end of the deflation pipe 13 passes through the connecting frame 1 and is threadedly connected to the pipe cover 14. The right end of the outer side of the deflation pipe 13 is set with a sealing ring 15, and the sealing ring 15 is fixedly connected to the right side of the connecting frame 1. The pipe cover 14 is removed from the deflation pipe 13, so that the gas inside the elastic airbag 9 is discharged from the deflation pipe 13.

[0020] The working principle of the utility model is as follows: when in use, first insert the fixed pipe 2 on the connecting frame 1 into the pipe 3, then adjust the position of the clamping block 44 according to the size of the pipe 3, and manually pull the clamping block 44 to make the clamping block 44 slide along the slide rail 43 in the slide groove 41. After the clamping block 44 moves to a suitable position, slowly release the clamping block 44, and under the action of the tension spring 42, the clamping block 44 automatically moves toward the outer wall of the pipe 3 and clamps at the pipe mouth of the pipe 3. At this time, the setting of the buffer pad 45 can not only buffer the impact force between the clamping block 44 and the outer wall of the pipe 3, and protect the surface of the pipe 3 from damage, but also ensure that the clamping block 44 is tightly fitted with the outer wall of the pipe 3. After the connecting frame 1 is fixed, the driving rod 6 is installed on the connecting seat 55. Since the piston plate 54 is slidably connected with the guide rail 53, the driving rod 6 can prevent the piston plate 54 from rotating inside the fixed pipe 2 during installation. By pushing the driving rod 6 toward the inside of the fixed pipe 2, the connecting seat 55 drives the piston plate 54 to squeeze the compression spring 52, and at the same time, the piston plate 54 discharges the air inside the fixed tube 2 through the exhaust check valve 10 and the vent hole 12 to the space between the first fixed plate 7 and the second fixed plate 8, that is, the space where the elastic airbag 9 is located. Then, the driving rod 6 is released, and the piston plate 54 is reset under the action of the compression spring 52. At this time, negative pressure is generated inside the fixed tube 2, so that the external air enters the fixed tube 2 through the intake check valve 11. By repeatedly pushing the driving rod 6, the interior of the elastic airbag 9 is inflated. As the gas continues to rush into the elastic airbag 9, the elastic airbag 9 expands, and its outer surface is tightly fitted with the inner wall of the pipe 3, thereby completing the sealing of the pipe opening of the pipe 3; when disassembling the sealing device, the pipe cover 14 is removed from the deflation pipe 13, so that the gas inside the elastic airbag 9 is discharged from the deflation pipe 13, and then the clamping unit 4 is separated from the pipe 3, so that the sealing device is disassembled as a whole for subsequent use.

[0021] Components not described in detail herein are prior art.

[0022] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the scope of protection of the present invention.

Claims

1. A pipeline repair sealing device, comprising a pipeline (3), characterized in that: A sealing device is movably installed at one end of the interior of the pipe (3), and the sealing device is composed of a connecting frame (1), a fixed pipe (2), a clamping unit (4), an inflation unit (5) and an elastic airbag (9). The front and rear ends of the connecting frame (1) are respectively provided with clamping units (4). The connecting frame (1) is movably installed on the outer end of the pipe (3) through the clamping unit (4). A fixed pipe (2) is welded at the center of the left side of the connecting frame (1), and the fixed pipe (2) is located inside the pipe (3). Ventilation holes (12) are arranged in an equidistant circular array around the left end of the fixed pipe (2). A first fixing plate (7) is arranged at the left end of the vent hole (12), and the first fixing plate (7) is fixedly installed at the left end of the fixed pipe (2). The right end of the vent hole (12) is provided with a A second fixing plate (8) is provided, and the second fixing plate (8) is fixedly connected to the outer side of the fixing tube (2); an elastic airbag (9) is fixedly installed between the second fixing plate (8) and the first fixing plate (7); the outer surface of the elastic airbag (9) is in active contact with the inner wall of the pipe (3); an exhaust check valve (10) is provided on the right side of the second fixing plate (8), and the exhaust check valve (10) is fixedly installed on the inner side of the fixing tube (2); an intake check valve (11) is provided on the upper right side of the exhaust check valve (10), and the intake check valve (11) is fixedly installed on the top of the fixing tube (2); an inflation unit (5) for inflating the elastic airbag (9) is provided at the right end of the inside of the fixing tube (2); and a detachably installed driving rod (6) is provided at the right end of the inflation unit (5).

2. A pipeline repair sealing device according to claim 1, characterized in that: The clamping unit (4) comprises a slide groove (41), a tension spring (42), a slide rail (43) and a clamping block (44). Two slide grooves (41) are provided. The slide grooves (41) are respectively provided at the front and rear ends of the connecting frame (1). The slide rails (43) are respectively provided at the upper and lower ends of the inner side of the slide groove (41). A clamping block (44) is slidably installed on the slide rail (43). The tension spring (42) is respectively provided on the opposite side of the clamping block (44). One end of the tension spring (42) is respectively fixedly connected to the clamping block (44), and the other end of the tension spring (42) is respectively fixedly connected to the inner side of the slide groove (41).

3. A pipeline repair sealing device according to claim 2, characterized in that: A buffer pad (45) is fixedly mounted on the side of the clamping block (44) that contacts the pipeline (3), and the buffer pad (45) is a silicone pad.

4. A pipeline repair sealing device according to claim 1, characterized in that: The inflation unit (5) comprises a support frame (51), a compression spring (52), a guide rail (53), a piston plate (54) and a connecting seat (55). The support frame (51) is a "cross"-shaped structure. The support frame (51) is fixedly mounted on the middle part of the inner side of the fixed tube (2). The right side of the support frame (51) is fixedly mounted with a compression spring (52). The other end of the compression spring (52) is fixedly connected to the left side of a piston plate (54) slidably mounted on the inner side of the fixed tube (2). The clamping grooves arranged on the front and rear sides of the piston plate (54) are respectively slidably connected to the guide rails (53) arranged on the front and rear sides of the fixed tube (2). The center of the right side of the piston plate (54) is fixedly mounted with a connecting seat (55), and the connecting seat (55) is penetrated by a through hole arranged in the center of the connecting frame (1).

5. A pipeline repair sealing device according to claim 4, characterized in that: The driving rod (6) is of a T-shaped structure, and an external thread arranged at the left end of the outer side of the driving rod (6) is threadedly connected to an internal thread arranged at the inner side of the connecting seat (55).

6. A pipeline repair sealing device according to claim 1, characterized in that: It also includes an air release pipe (13), a pipe cover (14) and a sealing ring (15), wherein the air release pipe (13) is arranged on the right side of the second fixing plate (8), one end of the air release pipe (13) passes through the second fixing plate (8) and is connected to the inside of the elastic airbag (9), and the other end of the air release pipe (13) passes through the connecting frame (1) and is threadedly connected to the pipe cover (14), and the sealing ring (15) is sleeved on the outer right end of the air release pipe (13), and the sealing ring (15) is fixedly connected to the right side of the connecting frame (1).

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