Pipe orifice plugging device

Abstract

The utility model discloses a pipe orifice plugging device, which belongs to the technical field of pipeline construction, and a sealing structure comprises a second air tap, a threaded connection surface, a threaded connection concave part, an inner support plate, a first air bag, a threaded connection convex part, an outer support plate, a second air bag and a third air tap, a threaded connecting surface is integrally arranged on the outer ring of the connecting plate, the connecting plate is connected with an outer supporting plate through the threaded connecting surface, a third air nozzle is embedded in the surface of the outer supporting plate, a second air bag is tightly attached to the inner wall of the outer supporting plate, and the second air bag is connected with the third air nozzle through a pipeline. The third air tap and the second air tap are utilized to inflate the second air bag and the first air bag, so that the second air bag and the first air bag are expanded and are tightly attached to the outer wall and the inner wall of the pipeline respectively, and compared with single-air-bag sealing, the sealing effect is better through the design, and a water closing experiment can be conveniently carried out on the pipeline.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline construction, in particular to a pipe opening blocking device. Background Art

[0002] Pipeline construction is also called pipeline construction. Since both ground and underground pipeline construction require wiring in advance, the pipelines have different flow directions, just like lines, so it is called pipeline construction.

[0003] In order to ensure the circulation and subsequent use of the pipeline, there will be an inspection well at intervals in the pipeline, and some pipelines have sedimentation wells at intervals. These inspection wells and sedimentation wells are used to check whether the pipeline is blocked or to sink large mass objects in the water to avoid blockage of the pipeline. Even if blockage occurs, it is obviously not cost-effective to re-excavate the pipeline for maintenance. These inspection wells and sedimentation wells are used to dredge the pipeline, which is similar to a modular design.

[0004] After the pipeline construction is completed, a water-tightness test must be carried out. The water-tightness test is to seal a section of the pipeline, and then inject water into the pipeline through an inspection well or a sedimentation well. After injecting water, it is necessary to wait for a period of time and use the detection device to check whether the water level has changed (because the inspection well and the sedimentation well are made of cement or bricks, they have a certain amount of water absorption, which must also be calculated). If the water loss is too fast, it means that there is a leak at the connection of the pipeline.

[0005] When sealing a pipeline, an airbag is generally used to seal it. The airbag is inserted into the pipeline and then inflated to seal the pipeline and the airbag. However, in actual use, it is found that due to the different structures or materials of the pipelines, the inner walls of some pipelines are not smooth enough. This design will leave a certain gap between the protrusions on the inner wall of the pipeline and the airbag. As time goes by, although it will not cause a large amount of water loss, it will also affect the detection results. Therefore, it is necessary to improve the existing structure to ensure the sealing of the pipeline as much as possible and improve the accuracy of the detection. Utility Model Content

[0006] The purpose of the utility model is to provide a pipe orifice blocking device in order to solve the above-mentioned problem.

[0007] The technical solution adopted by the utility model is as follows: a pipe orifice blocking device, a pipe is provided inside an inspection well, and a support assembly is provided inside the inspection well;

[0008] The support assembly includes: a support plate, a support arm, a telescopic arm, a spring block, a support foot, a turnbuckle screw, a cylinder, a first air nozzle, and a connecting plate. The inspection well is provided with a support plate inside, one side of the support plate is symmetrically connected to the support arm, the support arm is telescopically and slidably provided with a telescopic arm inside, the surface of the telescopic arm is movably connected to the spring block through a spring, the surface of the support arm is provided with a number of holes that fit with the spring block, and the holes are arranged in parallel, the end of the telescopic arm is rotatably connected to the support foot through a spherical shaft, and a turnbuckle screw is provided between the two support arms;

[0009] A cylinder is installed on the other side of the support plate, a first air nozzle is embedded in the surface of the cylinder body of the cylinder, and a connecting plate is installed on the other end of the cylinder;

[0010] A sealing structure capable of sealing the pipeline is installed above the connecting plate;

[0011] The sealing structure includes a second air nozzle, a threaded connection surface, a threaded connection recess, an inner support plate, a first air bag, a threaded connection protrusion, an outer support plate, a second air bag, and a third air nozzle;

[0012] A second gas nozzle is embedded in the surface of the connecting plate, a threaded connection surface is integrally provided on the outer ring of the connecting plate, the connecting plate is connected to the outer support plate via the threaded connection surface, a third gas nozzle is embedded in the surface of the outer support plate, a second air bag is tightly attached to the inner wall of the outer support plate, and the second air bag and the third gas nozzle are connected by a pipe;

[0013] A threaded connection recess is embedded in the axis of the other side of the connecting plate, and the inner support plate is movably connected to the outside of the connecting plate. The outer ring of the inner support plate is tightly fitted with the first airbag, and a threaded connection protrusion is integrated on one side of the inner support plate. The threaded connection protrusion and the threaded connection recess are engaged with each other, and pipes are embedded in the axis of the threaded connection protrusion and the threaded connection recess, and the pipes connect the second air nozzle with the first airbag.

[0014] Wherein, both ends of the turnbuckle screw are threadedly connected to a screw rod, and the other end of the screw rod is rotatably connected to the two support arms respectively.

[0015] Wherein, the tail end of the first air nozzle is connected to the cylinder body.

[0016] Among them, the material of the first airbag and the second airbag is nitrile rubber

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] 1. In the present invention, the third air nozzle and the second air nozzle are used to inflate the second airbag and the first airbag, so that the second airbag and the first airbag expand and fit tightly with the outer wall and the inner wall of the pipe respectively. Compared with the single airbag seal, this design achieves a better sealing effect and is convenient for conducting a water-tight test on the pipe.

[0019] 2. In the present invention, the outer support plate is connected by a threaded connection surface, and the inner support plate is installed by engaging between the threaded connection protrusion and the threaded connection concave. This design allows the support plate to be replaced according to the diameter of different pipes when the device is in use, which is more convenient and makes the device more targeted when used for different pipes, further improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the installation position structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional explosion structure in the utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention;

[0023] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure at point A;

[0024] Figure 5 For this utility model Figure 3 A schematic diagram of the enlarged structure at point B.

[0025] Markings in the figure: 1. Inspection well; 101. Pipeline; 2. Support plate; 201. Support arm; 202. Telescopic arm; 2021. Spring block; 203. Support foot; 204. Turnbuckle screw; 3. Cylinder; 301. First air nozzle; 4. Connecting plate; 401. Second air nozzle; 402. Threaded connection surface; 403. Threaded connection recess; 5. Inner support plate; 501. First air bag; 502. Threaded connection protrusion; 6. Outer support plate; 601. Second air bag; 602. Third air nozzle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In this utility model:

[0028] Reference Figure 1-5 ,

[0029] Embodiment 1: A pipe orifice plugging device, wherein a pipe 101 is provided inside the inspection well 1, and a support assembly is provided inside the inspection well 1;

[0030] The support assembly includes: a support plate 2, a support arm 201, a telescopic arm 202, a spring block 2021, a support foot 203, a turnbuckle 204, a cylinder 3, a first air nozzle 301, and a connecting plate 4. A support plate 2 is provided inside the inspection well 1. One side of the support plate 2 is symmetrically connected to the support arm 201 for rotation. The telescopic arm 202 is telescopically and slidably provided inside the support arm 201. The surface of the telescopic arm 202 is movably connected to the spring block 2021 by a spring. The end of the telescopic arm 202 is rotatably connected to the support foot 203 by a spherical shaft. A turnbuckle 204 is provided between the two support arms 201 to move the entire device into the inspection well 1. At this time, the span between the two support arms 201 is adjusted according to the diameter of the pipe 101. The turnbuckle 204 is rotated to engage the two screws for rotation. The turnbuckle 204 can be used to control the characteristics of the two screws advancing and retreating at the same time, thereby making the two telescopic arms 202 open and close with the cooperation of the rotating shaft.

[0031] A cylinder 3 is installed on the other side of the support plate 2. A first air nozzle 301 is embedded in the surface of the cylinder body of the cylinder 3. A connecting plate 4 is installed at the other end of the cylinder 3.

[0032] A sealing structure for sealing the pipe 101 is installed above the connecting plate 4; the sealing structure includes a second gas nozzle 401, a threaded connection surface 402, a threaded connection recess 403, an inner support plate 5, a first airbag 501, a threaded connection protrusion 502, an outer support plate 6, a second airbag 601, and a third gas nozzle 602;

[0033] The surface of the connecting plate 4 is embedded with a second air nozzle 401, and the outer ring of the connecting plate 4 is integrated with a threaded connection surface 402. The connecting plate 4 is connected to the outer support plate 6 through the threaded connection surface 402. The surface of the outer support plate 6 is embedded with a third air nozzle 602. The inner wall of the outer support plate 6 is tightly fitted with a second air bag 601. The second air bag 601 and the third air nozzle 602 are connected by a pipe. A threaded connection recess 403 is embedded at the axis of the other side of the connecting plate 4. The outer side of the connecting plate 4 is movably connected to the inner support plate 5. The outer ring of the inner support plate 5 is tightly fitted with the first air bag 501. One side of the inner support plate 5 A threaded connection protrusion 502 is integrally provided, and the threaded connection protrusion 502 and the threaded connection recess 403 are engaged with each other, and pipes are embedded at the axis of the threaded connection protrusion 502 and the threaded connection recess 403. The pipes connect the second air nozzle 401 with the first air bag 501, and the third air nozzle 602 and the second air nozzle 401 are used to inflate the second air bag 601 and the first air bag 501, so that the second air bag 601 and the first air bag 501 expand, and fit tightly with the outer wall and the inner wall of the pipe 101 respectively. This design achieves a better sealing effect, which is convenient for performing a closed water test on the pipe 101.

[0034] Preferably, the surface of the support arm 201 is provided with a number of holes that fit with the spring block 2021, and the holes are arranged in parallel. When the telescopic arm 202 is pulled out from the support arm 201, since the surface of the support arm 201 is provided with a number of holes that fit with the spring block 2021, the fit between the spring block 2021 and the holes is utilized to prevent the telescopic arm 202 from retracting.

[0035] Preferably, both ends of the turnbuckle screw 204 are threadedly connected to a screw rod, and the other end of the screw rod is rotatably connected to the two support arms 201 respectively. By rotating the turnbuckle screw 204, the turnbuckle screw 204 engages the two screw rods to rotate. The turnbuckle screw 204 can be used to control the characteristics of the two screw rods advancing and retreating at the same time, and then the two telescopic arms 202 are opened and closed with the cooperation of the rotating shaft.

[0036] Preferably, the tail end of the first air nozzle 301 is connected to the cylinder body of the cylinder 3, and air is inflated into the cylinder body of the cylinder 3 through the first air nozzle 301, so that the cylinder 3 extends, thereby moving the support plate 2 and the connecting plate 4 away from each other, thereby improving the tightness between the outer support plate 6 and the pipeline 101.

[0037] Preferably, the first airbag 501 and the second airbag 601 are made of nitrile rubber, which has excellent water resistance and air tightness and can be in contact with water for a long time.

[0038] Reference Figure 1-3 ,

[0039] Example 2: In addition to the embodiment in which the material of the first airbag 501 and the second airbag 601 is nitrile rubber, there is another embodiment in which the material of the first airbag 501 and the second airbag 601 is butadiene rubber. In addition to being water-resistant and oil-resistant, butadiene rubber has better elasticity and can operate under low temperature conditions, which expands the practical range of the device.

[0040] Working principle: First, move the entire device to the inside of the inspection well 1. At this time, adjust the span between the two support arms 201 according to the diameter of the pipe 101, and use the turnbuckle screw 204 to rotate. The turnbuckle screw 204 engages the two screws to rotate. The turnbuckle screw 204 can control the characteristics of the two screws to advance and retreat at the same time, and then the two telescopic arms 202 are opened and closed with the cooperation of the rotating shaft. At this time, select the inner support plate 5 and outer support plate 6 suitable for the diameter of the pipe 101, and use the threaded connection surface 402 to connect the outer support plate 6. Use the threaded connection convex 502 and the threaded connection concave 403 to engage with the inner support plate 5 to install. This design allows the support plate to be replaced according to the diameter of different pipes when the device is in use, which is more convenient. Then put the inner support plate 5 into the pipe 101, and the outer support plate 6 is stuck on the outer edge of the pipe 101. At this time, pull the telescopic arm 202 out of the support arm 201 so that the support foot 203 fits as closely as possible with the inspection well 1 on the other side, and the spherical The design of the rotating shaft can make the support foot 203 fit more closely with the contact surface. When the telescopic arm 202 is pulled out from the support arm 201, since the surface of the support arm 201 is provided with a number of holes that fit with the elastic block 2021, the elastic block 2021 fits with the holes to prevent the telescopic arm 202 from retracting. Then, the inner support plate 5 and the outer support plate 6 are fine-tuned to align the inner support plate 5 and the outer support plate 6 with the central axis of the pipe 101 as much as possible. Then, the first air nozzle 3 is used to press the inner support plate 5 and the outer support plate 6 together. 01 inflates the inside of the cylinder 3 to extend the cylinder 3, thereby moving the support plate 2 and the connecting plate 4 away from each other, improving the tightness between the outer support plate 6 and the pipe 101. Finally, use the third air nozzle 602 and the second air nozzle 401 to inflate the inside of the second air bag 601 and the first air bag 501 to expand the second air bag 601 and the first air bag 501, respectively, and fit tightly with the outer wall and the inner wall of the pipe 101. This design achieves a better sealing effect and facilitates the water-tightness test of the pipe 101.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipe orifice plugging device, wherein a pipe (101) is provided inside a manhole (1), characterized in that: A support assembly is provided inside the inspection well (1); The support assembly comprises: a support plate (2), a support arm (201), a telescopic arm (202), a spring block (2021), a support foot (203), a turnbuckle screw (204), a cylinder (3), a first air nozzle (301), and a connecting plate (4); the inspection well (1) has a support plate (2) inside; one side of the support plate (2) is symmetrically connected to the support arm (201); the support arm (201) has a telescopic arm (202) inside the telescopic arm (202) for telescopic sliding; the surface of the telescopic arm (202) is movably connected to the spring block (2021) via a spring; the end of the telescopic arm (202) is rotatably connected to the support foot (203) via a spherical shaft; and a turnbuckle screw (204) is provided between the two support arms (201); A cylinder (3) is installed on the other side of the support plate (2), a first air nozzle (301) is embedded in the cylinder surface of the cylinder (3), and a connecting plate (4) is installed at the other end of the cylinder (3); A sealing structure capable of sealing the pipeline (101) is installed above the connecting plate (4); The sealing structure comprises a second air nozzle (401), a threaded connection surface (402), a threaded connection recess (403), an inner support plate (5), a first air bag (501), a threaded connection protrusion (502), an outer support plate (6), a second air bag (601), and a third air nozzle (602); The surface of the connecting plate (4) is embedded with a second air nozzle (401), the outer ring of the connecting plate (4) is integrally provided with a threaded connection surface (402), the connecting plate (4) is connected to the outer support plate (6) via the threaded connection surface (402), the surface of the outer support plate (6) is embedded with a third air nozzle (602), and the inner wall of the outer support plate (6) is tightly fitted with a second air bag (601); A threaded connection recess (403) is embedded in the axis of the other side of the connecting plate (4), and the outer side of the connecting plate (4) is movably connected to the inner support plate (5). The outer ring of the inner support plate (5) is tightly fitted with a first airbag (501), and one side of the inner support plate (5) is integrally provided with a threaded connection protrusion (502).

2. A pipe orifice plugging device according to claim 1, characterized in that: The threaded connection protrusion (502) and the threaded connection concave (403) are engaged with each other, and a pipe is embedded in the axis of the threaded connection protrusion (502) and the threaded connection concave (403), and the pipe connects the second air nozzle (401) and the first air bag (501).

3. The pipe orifice sealing device according to claim 1, characterized in that: The second air bag (601) and the third air nozzle (602) are connected via a pipe.

4. The pipe orifice sealing device according to claim 1, characterized in that: The surface of the support arm (201) is provided with a plurality of holes that fit with the bullet block (2021), and the holes are arranged in parallel.

5. The pipe orifice sealing device according to claim 1, characterized in that: Both ends of the turnbuckle screw (204) are threadedly connected to a screw rod, and the other end of the screw rod is rotatably connected to the two support arms (201).

6. The pipe orifice sealing device according to claim 1, characterized in that: The tail end of the first air nozzle (301) is connected to the cylinder body of the air cylinder (3).

7. The pipe orifice sealing device according to claim 1, characterized in that: The first airbag (501) and the second airbag (601) are made of nitrile rubber.

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