Air bag lowering device for pipeline plugging

Abstract

The air bag lowering device for pipeline plugging comprises a hole formed in the top of the pipeline wall and a connecting box, two hanging rods are arranged in the connecting box in a right-facing and downward mode, the lower ends of the two hanging rods are hinged to storage buckets through first hinge pins respectively, upper ports of the storage buckets are water inlet ports and provided with hollowed-out plates, lower ports of the storage buckets are water outlet ports, and the hollow-out plates are arranged on the water outlet ports. The storage barrel is placed in the pipeline through the hole, a telescopic element is hinged to the connecting box, the lower end of the telescopic element is connected with the storage barrel through a second hinge pin, and the telescopic element stretches out and draws back to drive the storage barrel to turn over around the first hinge pin in the pipeline. The pipeline plugging device is simple and convenient to operate, the storage barrel is overturned, high-pressure water flow in the overturned pipeline flushes the air bag in the storage barrel into the pipeline, and then the air bag is inflated to plug the pipeline, so that the problem of inconvenience in pipeline plugging construction by a folding plugging plate at present is solved; and meanwhile, the problem that the air bag is difficult to enter the pipeline when the pipeline is perforated and directly put down is solved.

Description

Technical Field

[0001] The utility model belongs to the field of pipeline plugging, in particular to an air bag lowering device for pipeline plugging. Background Art

[0002] The municipal water network pipeline maintenance and construction is a non-stop water supply construction. Due to the high water pressure and fast water flow in the pipeline, in order to ensure a low water pressure maintenance environment at the maintenance point, it is necessary to use sealing parts to seal the pipeline in front of the maintenance point before maintenance. Therefore, the sealing effect of the pipeline is directly related to whether the back-end maintenance construction can proceed smoothly.

[0003] At present, pipeline plugging is mostly achieved by using folding plugging plates. During construction, a connecting box is first installed on the pipeline, and a construction hole is opened in the pipeline using the drill bit in the connecting box. Then the drill bit is taken out and the folding plugging plate is lowered from the hole. The folding plugging plate remains in a folded state when being lowered, and is opened and plugged after it is moved to the sealing position in the pipeline.

[0004] The use of folding plugging plates to plug pipelines has a complex structure and cumbersome operation. The folding plugging plates themselves are heavy and require a corresponding folding control structure to facilitate the lowering and recovery of the folding plugging plates, which brings great inconvenience to the construction.

[0005] Another idea for pipe plugging is to use airbag plugging. Similarly, a construction hole is opened in the pipe, and then the airbag is lowered into the pipe through the hole. However, since the plugging point is located in the middle of the pipe, the water pressure of the water flow in the pipe is very high, and the connection box connected to the hole is full of water. The airbag itself has the property of floating in water. After the airbag is lowered, it will float in the connection box under the action of water pressure, and it is difficult to press it into the pipe to seal the pipe. Utility Model Content

[0006] In view of this, the utility model aims to provide a pipeline plugging airbag lowering device, so as to achieve smooth lowering of the pipeline plugging airbag and plug the pipeline after the airbag is inflated.

[0007] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0008] A device for lowering an airbag for pipe plugging comprises a hole opened at the top of a pipe wall, and a connecting box arranged outside the pipe corresponding to the hole and connected to the hole, two suspension rods are arranged in the connecting box facing and downward, and the lower ends of the two suspension rods are respectively hinged to a storage bucket for accommodating the airbag through a first hinge pin, the upper port of the storage bucket is a water inlet port and is provided with a hollow plate, and the lower port of the storage bucket is a water outlet port, the storage bucket is lowered into the pipe through the hole, the line connecting the two first hinge pins is horizontal and perpendicular to the pipe, the connecting box is hinged with a telescopic element, the lower end of the telescopic element is connected to the storage bucket through a second hinge pin, and the telescopic element telescopes and drives the storage bucket to flip around the first hinge pin in the pipe.

[0009] Furthermore, the distance from the farthest end of the back water side of the storage bucket to the center line of the first hinge pin is less than or equal to the distance from the first hinge pin to the highest point of the hole.

[0010] Furthermore, the lower port of the storage bucket is an oblique structure, and the end of the lower port close to the pipeline inlet is the low end, and the end of the lower port far from the pipeline inlet is the high end.

[0011] Furthermore, the high end of the lower port is lower than the first hinge pin.

[0012] Furthermore, the telescopic element is a pneumatic cylinder or a hydraulic cylinder, and the push rod of the telescopic element is hinged to the water-facing side of the storage bucket through the second hinge pin.

[0013] Furthermore, the connection box is provided with a reel, and a drawstring for connecting the airbag is wound around the reel.

[0014] Compared with the prior art, the airbag lowering device for pipeline plugging described in the utility model has the following advantages:

[0015] (1) The utility model is simple and convenient to operate. The storage barrel is flipped. After the flip, the high-pressure water flow in the pipeline will flush the airbag in the storage barrel into the pipeline, and then the airbag is inflated to block the pipeline, thereby solving the problem of the inconvenience of the current folding blocking plate to block the pipeline. At the same time, it solves the problem that the airbag is difficult to enter the interior of the pipeline when the pipeline opening is directly lowered.

[0016] (2) In the present invention, the lower port of the storage bucket is an oblique port structure, which reduces the area of ​​the backwater side of the storage bucket. After flipping, the backwater side reduces the blocking effect of the water flow and the airbag. The upper and lower ports of the storage bucket have smooth flow, which is convenient for flushing the airbag in the storage bucket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic structural diagram of an airbag lowering device for pipe plugging according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of a state in which an airbag is released by flipping over a pipe plugging airbag lowering device according to an embodiment of the utility model;

[0020] Figure 3 This is the main view of the storage bin;

[0021] Figure 4 This is a top view of the storage bin.

[0022] Description of reference numerals:

[0023] 1-pipe; 101-hole; 2-storage bucket; 21-lower port; 3-connecting box; 31-saddle pipe; 32-box cover; 4-first hinge pin; 5-reel; 6-pull rope; 7-suspender rod; 8-telescopic element; 9-second hinge pin; 10-air bag; 11-hollow plate; 12-inflatable tube. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] like Figure 1 As shown, a device for lowering an airbag for pipe plugging includes a hole 101 opened at the top of the pipe wall of the pipe 1, and a connection box 3 is arranged outside the pipe 1 corresponding to the hole 101. The connection box 3 includes a saddle pipe 31 connected to the hole 101, and the upper end of the saddle pipe 31 is sealed by a box cover 32. This structure is a common structure of a connection box for pipeline construction and will not be described in detail here. A storage bucket 2 is arranged below the connection box 3, and the storage bucket 2 is lowered into the pipe 1 through the hole 101, and is placed in a vertical state.

[0026] The structure of the storage bucket 2 is as follows Figure 3 , 4 As shown, the upper port is a water inlet port and is provided with a hollow plate 11, and the lower port 21 of the storage bucket is a water outlet port and is in an open state.

[0027] Two first hinge pins 4 are symmetrically arranged on the left and right sides of the storage bucket 2, and the center line of the first hinge pins 4 is the flip center line of the storage bucket 2. The box cover 32 of the connection box 3 is provided with two suspension rods 7 corresponding to the two first hinge pins 4. The two suspension rods 7 are respectively hinged to the storage bucket 2 through a first hinge pin 4. At this time, the storage bucket 2 is suspended on the box cover 32 of the connection box 3 through the two suspension rods 7. A flip structure for driving the storage bucket 2 to flip is arranged inside the connection box 3.

[0028] The flip structure includes a telescopic element 8, which is a cylinder or a hydraulic cylinder and is arranged corresponding to the water-facing side (the side facing the water flow) of the storage bucket 2. The telescopic element 8 is hinged to the box cover 32, and the storage bucket 2 is provided with a second hinge pin 9 at the top end of the water-facing side. The push rod of the telescopic element 8 is hinged to the storage bucket 2 through the second hinge pin 9.

[0029] In order to facilitate the control of the airbag, in the utility model, a reel 5 is provided on the top cover of the connection box 3, and a drawstring 6 for connecting the airbag is wound around the reel 5, and the drawstring 6 is connected to the airbag after passing through the top cover of the connection box 3. The rotation power source of the reel 5 can be manual or driven by a motor.

[0030] The working principle of the utility model is as follows: place the uninflated airbag 10 for plugging in the storage bucket 2, use a drawstring to connect the end of the airbag close to the upper port of the storage bucket, the inflation tube 12 of the airbag 10 extends out of the connection box 3, the storage bucket 2 is lowered into the pipe 1 through the hole 101, and the airbag 10 floats in the storage bucket 2. Due to the hollow plate 11 provided at the upper port of the storage bucket 2, the water-passing function is realized and the airbag 10 is limited at the same time, preventing the airbag 10 from floating out of the bucket from the upper port, so that the storage bucket 2 can store the airbag intactly. The push rod of the telescopic element 8 extends to drive the storage bucket 2 to flip in the pipe 1, so that the upper port of the storage bucket 2 flips toward the water-facing direction, such as Figure 2 As shown, the water in the pipe 1 enters from the upper end of the storage barrel 2 and flows out from the lower end. After the storage barrel 2 is turned over, the barrel wall located above prevents the airbag in the barrel from entering the hole 101. Therefore, under the action of the high-pressure water flowing through the storage barrel 1, the airbag 10 in the barrel is quickly flushed out and enters the pipe 1, and moves backward with the water flow in the pipe 1. It is blocked and limited by the column set in the pipe 1 at the rear, and the airbag 10 is inflated through the inflation tube 12, so that the airbag 10 expands and blocks the pipe 1.

[0031] In the present invention, the distance from the farthest end of the back-water side of the storage bucket 2 (the bottom end of the bucket wall at the farthest position from the storage bucket to the pipe inlet) to the center line of the first hinge pin 4 is less than or equal to the distance from the center line of the first hinge pin 4 to the highest point of the hole 101 (the top of the pipe wall of the pipe). This structure ensures that after the storage bucket 2 is turned over, the lowest point of the bucket wall located above is located in the pipe 1, that is, this point is lower than the highest point of the water outlet 101, ensuring that the airbag 10 is smoothly flushed out of the water into the pipe 1.

[0032] In the present invention, the lower port 21 of the storage bucket 2 is an oblique structure, and the end of the lower port close to the inlet of the pipe 1 is the low end, and the end far from the inlet of the pipe 1 is the high end, and the high end is lower than the first hinge pin 4. This structure reduces the area of ​​the backwater side of the storage bucket, and reduces the blocking effect of the backwater side on the water flow and the airbag after flipping, so that the water flow can flush the airbag in the storage bucket out by flipping the storage bucket at a small angle.

[0033] The utility model has the advantages of simple structure, convenient operation and low construction cost, and can smoothly lower the air bag into the pipeline to block the pipeline, thus ensuring a low water pressure maintenance environment at the rear maintenance point.

[0034] 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 in the protection scope of the present invention.

Claims

1. An airbag lowering device for pipeline plugging, characterized in that: The invention comprises a hole (101) opened at the top of the pipe wall of a pipe (1), and a connection box (3) arranged outside the pipe (1) corresponding to the hole (101) and connected to the hole (101), wherein two suspension rods (7) are arranged in the connection box (3) facing and pointing downward, and the lower ends of the two suspension rods (7) are respectively hinged to a storage bucket (2) for accommodating an air bag through a first hinge pin (4), and the upper end of the storage bucket (2) is a water inlet port and is provided with a hollow plate (11), and the storage bucket ( The lower port (21) of the storage bucket (2) is a water outlet port, the storage bucket (2) is lowered into the pipeline (1) through the hole (101), the connecting line of the two first hinge pins (4) is horizontal and perpendicular to the pipeline (1), the connection box (3) is hinged with a telescopic element (8), the lower end of the telescopic element (8) is connected to the storage bucket (2) through a second hinge pin (9), and the telescopic element (8) telescopes and drives the storage bucket (2) to flip around the first hinge pin (4) in the pipeline (1).

2. The airbag lowering device for pipeline plugging according to claim 1 is characterized in that: The distance from the farthest end of the backwater side of the storage bucket (2) to the center line of the first hinge pin (4) is less than or equal to the distance from the first hinge pin (4) to the highest point of the hole (101).

3. The airbag lowering device for pipeline plugging according to claim 1 is characterized in that: The lower port (21) of the storage bucket (2) is an oblique structure, and the end of the lower port closer to the inlet of the pipeline (1) is the low end, and the end of the lower port farther from the inlet of the pipeline (1) is the high end.

4. The airbag lowering device for pipeline plugging according to claim 3 is characterized in that: The high end of the lower port (21) is lower than the first hinge pin (4).

5. The airbag lowering device for pipeline plugging according to claim 1 is characterized in that: The telescopic element (8) is a pneumatic cylinder or a hydraulic cylinder, and the push rod of the telescopic element (8) is hinged to the water-facing side of the storage bucket (2) through the second hinge pin (9).

6. The airbag lowering device for pipeline plugging according to claim 1 is characterized in that: The connection box (3) is provided with a reel (5), and a drawstring (6) for connecting the airbag is wound around the reel (5).

Images