A method of occluding a vessel with a balloon

Abstract

The application provides a method for sealing a pipeline with an air bag, comprising the following steps: S10, determining a pipeline air bag lowering position, installing a connecting box at the position, and performing a pipe wall hole operation on the pipeline at the position; S20, after the hole operation is completed, recovering the hole tool; S30, lowering a storage barrel containing an un-inflated air bag through the connecting box; the storage barrel is lowered into the pipeline through the hole in step S10 and is entirely immersed in water, so that a water inlet port of the storage barrel faces a water flow direction in the pipeline, a water outlet port of the storage barrel faces away from the water flow direction in the pipeline, a high-pressure water flow in the pipeline flows through the storage barrel, the air bag in the storage barrel is flushed out and enters the pipeline, and lowering of the air bag is completed; and S40, inflating the air bag to make it expand and seal the pipeline. The application is convenient and low in cost, ingeniously uses the storage barrel as a carrier to lower the un-inflated air bag, and then inflates the air bag to seal the pipeline.

Description

Technical Field

[0001] This invention belongs to the field of pipeline maintenance and construction, and in particular relates to a method for sealing pipelines with an airbag. Background Technology

[0002] Municipal water pipe network maintenance is carried out without interrupting water supply. Due to the large pipe diameter, high water pressure, and fast water flow, in order to ensure a low water pressure maintenance environment at the maintenance point, it is necessary to use sealing components to seal the pipe in front of the maintenance point before maintenance. Therefore, the sealing effect of the pipe directly affects whether the subsequent maintenance work can proceed smoothly.

[0003] Currently, most pipe sealing is achieved using folding sealing plates. During construction, a connection box is first installed on the pipe, and a drilling bit inside the connection box is used to open a construction hole in the pipe. Then, the drill bit is removed, and the folding sealing plate is lowered through the hole. The folding sealing plate remains folded during lowering. Once it is moved to the sealing position inside the pipe, it is opened and the pipe is sealed.

[0004] Using folding sealing plates to seal pipelines is a complex and cumbersome process. The folding sealing plates themselves are quite heavy, and a corresponding folding control structure is required to facilitate the lowering and retrieval of the folding sealing plates, which brings great inconvenience to the construction.

[0005] Another approach to pipe sealing is to use airbags. This also requires creating a working hole in the pipe and then lowering the airbag into the pipe through the hole. However, since the sealing point is located in the middle of the pipe, the water pressure inside the pipe is very high. The connection box connected to the hole is full of water, and the airbag itself has the property of floating in water. After the airbag is lowered, it will float in the connection box under the water pressure, making it difficult to push it into the pipe and seal it. Summary of the Invention

[0006] In view of this, the present invention aims to propose a method for sealing pipelines with an airbag, so as to realize the lowering of the airbag to seal the pipeline, and provide a low water pressure maintenance environment for the pipeline maintenance point at the downstream end, so as to ensure the maintenance work can be carried out.

[0007] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0008] A method for sealing a pipeline with an airbag includes the following steps:

[0009] S10. Determine the location for lowering the pipeline airbag, install the connection box at that location, and make an opening in the pipeline wall at that location.

[0010] S20. After the hole is drilled, the drilling tool is recycled.

[0011] S30. Lower the storage bucket containing the airbag through the connecting box;

[0012] Place the uninflated airbag into the storage bucket, with the center line of the airbag corresponding to the center line of the storage bucket. The storage bucket is suspended in the connecting box. The storage bucket is lowered into the pipe through the hole opened in step S10 and is completely submerged in water. The water inlet of the storage bucket faces the direction of water flow in the pipe, and the water outlet faces away from the direction of water flow in the pipe. The high-pressure water flow in the pipe flows through the storage bucket, pushes the airbag out of the storage bucket, and enters the pipe, completing the lowering of the airbag.

[0013] S40. Inflate the airbag to make it expand and seal the pipe.

[0014] Furthermore, in step S20, the hole-opening operation is a pressure-operated hole-opening operation.

[0015] Furthermore, in step S30, a perforated plate is provided at the water inlet port of the storage bucket, and a pull rope is provided at one end of the uninflated airbag close to the water inlet port of the storage bucket. The pull rope extends from the perforated plate. Pulling the pull rope tightly prevents the airbag from slipping off the water outlet port of the storage bucket. The storage bucket is placed in the pipe in a vertical state with the water inlet port facing up and the water outlet port facing down. The storage bucket is flipped in the pipe so that the water inlet port of the storage bucket faces the direction of water flow in the pipe and the water outlet port faces away from the direction of water flow in the pipe. During the flipping process of the storage bucket, the pull rope is released, and the airbag is flushed out by the high-pressure water flowing through the storage bucket and enters the pipe.

[0016] Furthermore, the pull rope is wound around a drum, which is mounted on the cover of the connecting box.

[0017] Furthermore, in step S30, the storage bucket containing the airbag is suspended from the lid of the connecting box by a boom, and the storage bucket and the boom are hinged together. A push rod is also hinged between the storage bucket and the lid, and the push rod action realizes the flipping of the storage bucket.

[0018] Furthermore, the center line of the storage bucket's flipping is set close to the center of the storage bucket, and the bottom of the back water side of the storage bucket is lower than the flipping center.

[0019] Furthermore, the water outlet of the storage bucket is angled, with the water-facing end of the outlet lower than its back end.

[0020] Compared with existing technologies, the method for sealing pipelines with airbags according to the present invention has the following advantages:

[0021] (1) This invention is easy to construct and low in cost. It cleverly uses a storage bucket as a carrier, puts the uninflated airbag into the storage bucket, and lowers the storage bucket into the pipeline. The airbag is pushed out and into the pipeline by the impact force of the high-pressure water flow in the pipeline, thus completing the lowering of the airbag. The airbag is inflated to expand and seal the pipeline, providing a low water pressure maintenance environment for pipeline maintenance points and solving the problem of inconvenient construction of folding sealing plates for pipeline sealing.

[0022] (2) In this invention, when the storage bucket is lowered, it is in a vertical state with the water inlet facing up and the water outlet facing down. After being completely submerged in the water in the pipe, the storage bucket is flipped over to release the uninflated airbag, which improves the airbag's storage capacity and ensures that the airbag is completely inserted into the pipe. During the flipping process, the storage bucket is flushed out by high-pressure water and put into the pipe, which improves the airbag lowering effect. Attached Figure Description

[0023] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0024] Figure 1 This is a schematic diagram of the storage bucket structure in the airbag-sealed pipeline method described in this embodiment;

[0025] Figure 2 This is a schematic diagram of the connection structure of the storage bucket in the airbag sealing pipe method described in this embodiment;

[0026] Figure 3 This is a schematic diagram showing the airbag deployment state after the storage bucket is flipped over in the embodiment.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1-Pipe; 101-Hole; 2-Storage bucket; 21-Water outlet port; 3-Connecting box; 32-Box cover; 4-First hinge pin; 5-Roller; 6-Pull rope; 7-Hanging rod; 8-Telescopic element; 9-Second hinge pin; 10-Airbag; 11-Perforated plate; 12-Inflation pipe. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] A method for sealing a pipeline with an airbag includes the following steps:

[0031] S10. Determine the location for lowering the airbag at a certain point at the front end of the maintenance point of pipeline 1. Install the connecting box 3 at this location. The cover 32 of the connecting box 3 is bolted to the box body. Pipeline 1 is drilled at the position below the airbag. This drilling operation is a pressurized drilling operation. After drilling, high-pressure water in the pipeline enters the connecting box 3 and seals the connecting box through the cover 32. This construction method is a common method for pipeline drilling and maintenance, and will not be described in detail here.

[0032] The size of the storage bucket 2 is determined according to the size of the hole 101 and the inner diameter of the pipe 1, so that the storage bucket can be lowered into the pipe 1 through the hole 101, and the storage bucket 2 can be rotated around the rotation center inside the pipe 1.

[0033] Storage bucket 2 structure as follows Figure 1 As shown, both of its ports are open, and its water inlet port is equipped with a perforated plate 11 to ensure water flow.

[0034] S20. After the hole is drilled, the drilling tool is recycled.

[0035] S30. Lower the storage bucket containing the airbag via the connecting box:

[0036] A storage bucket connection structure is provided on the lid 32 of the connecting box. In this embodiment, the connecting box 3 can be equipped with two lids, one lid for installing a cutting tool and the other lid for installing the storage bucket connection structure. Figure 2 As shown, the storage bucket connection structure includes two lifting rods 7 set on the lid 32. Each of the two lifting rods 7 is hinged to the storage bucket 2 through a first hinge pin 4. At this time, the storage bucket 2 is suspended on the lid 32 of the connecting box 3 by the two lifting rods 7. A push rod 8 is also hinged between the storage bucket 2 and the lid 32. The push rod 8 is preferably a cylinder or a hydraulic cylinder. The push rod action realizes the storage bucket flipping around the first hinge pin 4. The center line of the first hinge pin 4 is the flipping center of the storage bucket 2. The flipping center line is horizontal and perpendicular to the pipeline direction.

[0037] Place the uninflated airbag 9 into the storage container, with the centerline of the airbag 9 aligned with the centerline of the storage container. The inlet of the inflation tube 12 connected to the airbag 9 should be left outside the connection box for easy inflation. A pull rope 6 is attached to the airbag 9 near the water inlet port of the storage container, i.e., one end of the perforated plate 11. Pulling the pull rope 6 prevents the airbag 9 from slipping from the water outlet port 21 of the storage container 2. The storage container is lowered into the pipe 1 through the hole 101 in a vertical position with the water inlet port facing upwards and the water outlet port 21 facing downwards. After the entire storage container 2 is fully submerged in the water in the pipe 1, the push rod 8 is activated to flip the storage container 2. The flipping direction is such that the water inlet port faces the direction of water flow in the pipe, and the water outlet port 21 faces away from the direction of water flow in the pipe. Figure 3 As shown, high-pressure water flows into the collection bucket through the inlet port and out through the outlet port, meaning that high-pressure water flows through the collection bucket 2 at this time. After the collection bucket 2 is flipped over, the upper part of the bucket wall prevents the air bladder 10 inside the bucket from entering the hole 101. Therefore, under the action of the high-pressure water flowing through the collection bucket 1, the air bladder 10 inside the bucket is quickly pushed out and enters the pipe 1, and moves backward with the water flow in the pipe 1, where it is blocked and limited by the retaining post set in the pipe 1 at the rear.

[0038] In this step, during the flipping of the storage bucket, the pull rope 6 is released to ensure that the airbag 9 is flushed out by the high-pressure water flowing through the storage bucket and enters the pipe.

[0039] S40. Inflate the airbag 10 through the inflation tube 12. The airbag 10 expands and seals the tube 1.

[0040] In this invention, the pull rope 6 is wound around the drum 5, which is mounted on the cover 32 of the connecting box. The power source for rotating the drum 5 can be manual or driven by an electric motor.

[0041] In this invention, the rotation center line of the storage bucket 2 is set close to the center of the storage bucket, and the bottom end of the back water side of the storage bucket (the bottom end of the bucket wall at the farthest point from the water inlet of the pipe) is lower than the rotation center. Furthermore, the distance from the farthest point of the back water side of the storage bucket 2 (the bucket wall at the farthest point from the pipe inlet) to the rotation center is less than or equal to the distance from the rotation center to the highest point of the hole 101 (the top of the pipe wall). This structure ensures that after the storage bucket 2 is rotated, the lowest point of its upper bucket wall is located inside the pipe 1, that is, this point is lower than the highest point of the outlet 101, ensuring that the airbag 10 can be smoothly flushed out by water and moved into the pipe 1.

[0042] In this invention, the water outlet 21 of the storage bucket is angled, and the water-facing end of the water outlet 21 (the position closest to the pipe inlet) is lower than its back-water end (the position furthest from the pipe inlet). This structure reduces the area of ​​the back-water side of the storage bucket, and after flipping, reduces the obstruction effect of the back-water side on the water flow and air bladder 9 in the storage bucket, so that the water flow can flush out the air bladder inside the storage bucket with a small flipping angle.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for sealing a pipeline with an airbag, characterized in that: Includes the following steps: S10. Determine the location for lowering the pipeline airbag, install the connection box at that location, and make an opening in the pipeline wall at that location. S20. After the hole is drilled, the drilling tool is recycled. S30. Lower the storage bucket containing the airbag through the connecting box; Place the uninflated airbag into the storage bucket, with the center line of the airbag corresponding to the center line of the storage bucket. The storage bucket is suspended in the connecting box. The storage bucket is lowered into the pipe through the hole opened in step S10 and is completely submerged in water. The water inlet of the storage bucket faces the direction of water flow in the pipe, and the water outlet faces away from the direction of water flow in the pipe. The high-pressure water flow in the pipe flows through the storage bucket, pushes the airbag out of the storage bucket, and enters the pipe, completing the lowering of the airbag. In step S30, a perforated plate is provided at the water inlet port of the storage bucket. A pull rope is provided at one end of the uninflated airbag close to the water inlet port of the storage bucket. The pull rope extends out from the perforated plate. Pulling the pull rope tightly prevents the airbag from slipping off the water outlet port of the storage bucket. The storage bucket is placed in the pipe in a vertical state with the water inlet port facing up and the water outlet port facing down. The storage bucket is flipped in the pipe so that the water inlet port of the storage bucket faces the direction of water flow in the pipe and the water outlet port faces away from the direction of water flow in the pipe. During the flipping process of the storage bucket, the pull rope is released, and the airbag is flushed out by the high-pressure water flowing through the storage bucket and enters the pipe. S40. Inflate the airbag to make it expand and seal the pipe.

2. The method for sealing a pipeline with an airbag according to claim 1, characterized in that: In step S20, the drilling operation is a pressurized drilling operation.

3. The method for sealing a pipeline with an airbag according to claim 1, characterized in that: The pull rope is wound around the drum, which is set on the cover of the connecting box.

4. The method for sealing a pipeline with an airbag according to claim 1, characterized in that: In step S30, the storage bucket containing the airbag is suspended from the lid of the connecting box by a boom, and the storage bucket and the boom are hinged together. A push rod is also hinged between the storage bucket and the lid, and the push rod action causes the storage bucket to flip.

5. The method for sealing a pipeline with an airbag according to claim 1, characterized in that: The center line of the storage bucket's flipping is set close to the center of the storage bucket, and the bottom of the back water side of the storage bucket is lower than the center line of the flipping.

6. The method for sealing a pipeline with an airbag according to claim 1, characterized in that: The water outlet of the storage bucket is angled, with the water-facing end of the outlet lower than its back end.

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