Pressure pipeline emergency plugging device and maintenance method

Abstract

The invention discloses a pressure pipeline emergency plugging device and a maintenance method, and the pressure pipeline emergency plugging device comprises a plugging device. The connecting part is fixedly connected with the air pipe and comprises a bent groove communicated with the air pipe; the plugging part is fixedly connected with the connecting part and comprises a through groove communicated with the bent groove; the air bag fixedly sleeves the periphery of the plugging part in an annular shape in a normal state, and an air hole of the air bag is communicated with the through groove; the pressurizing groove is formed in the plugging part; the inclined plate is arranged in the pressurizing groove in a sliding manner; and the friction block is made of a rubber material and is fixedly connected with the inclined plate. Pressure is applied to the inclined face of the inclined plate through the pressure of fluid in the pressure pipeline, the inclined plate is promoted to move, then the friction block gets close to and tightly abuts against the inner wall of the pressure pipeline, and the friction block is matched with the expanded air bag to enhance the friction resistance of the plugging part in the pressure pipeline, namely the pressure of the fluid in the pressure pipeline is converted into the friction resistance; the plugging device is used for plugging pressure pipelines with larger-range pressure.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline maintenance, and in particular to a pressure pipeline emergency plugging device and a maintenance method. Background Art

[0002] The general application scenarios of plugging devices in pressure pipelines are leakage of pressure pipelines and temporary plugging for the re-layout of pressure pipelines.

[0003] There is a plugging method that prepares the perforated pipe fittings and the plugging pipe fittings according to the design requirements and construction plan, welds the assembled pipe fittings by using appropriate welding methods and welding materials, and then uses a hole punching machine to drill holes in the corresponding parts of the welded pipe fittings so that the hole punching tool completely penetrates the pipe wall. After taking out the hole punching machine, the plugger is connected, and the plugging airbag on the plugger is inflated to expand its shape to plug the pipe. However, due to the limitations of the airbag plugging, when the pressure in the pressure pipe is greater than 0.1MPa, as the pressure gradually increases to the free water pressure, it is easy to move, resulting in poor water plugging effect. Summary of the invention

[0004] The purpose of the present invention is to provide an emergency plugging device and a maintenance method for a pressure pipeline, which increases the friction between the plugging airbag and the inner wall of the pipeline to adapt to plugging pressure pipelines with a larger range of pressures.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The emergency plugging device for a pressure pipeline, which contains a plugging device, includes:

[0007] trachea;

[0008] A connecting portion, fixedly connected to the trachea and comprising a curved groove communicating with the trachea;

[0009] The blocking portion is fixedly connected to the connecting portion and comprises a through groove communicating with the bent groove;

[0010] The airbag is fixedly sleeved on the periphery of the blocking portion in an annular shape under normal conditions, and the air hole of the airbag is connected to the through groove;

[0011] A pressure groove is provided inside the plugging portion;

[0012] An inclined plate is slidably disposed inside the pressurizing tank;

[0013] The friction block is made of rubber material and is fixedly connected to the inclined plate;

[0014] Among them, the sealing part enters the interior of the pressure pipe, the airbag starts to inflate until it blocks the inner wall of the pressure pipe, the pressurizing groove is connected with the pressure pipe, and the fluid in the pressure pipe enters the pressurizing groove to pressurize the inclined surface of the inclined plate so that the friction block approaches the inner wall of the pressure pipe until it is tightly in contact.

[0015] Preferably, two symmetrically arranged sealing disks are fixedly connected in the pressure groove, an inclined plate sealing slide is arranged between the two, a plurality of variable grooves arranged in an array are provided in the inclined plate, a hard plate is slidably arranged in the variable groove, a spring is provided in the variable groove, and both ends of the spring are respectively connected to the variable groove and the hard plate.

[0016] Preferably, a frame is fixedly connected inside the sealing part, and the frame is composed of a circular plate, multiple horizontal plates and vertical plates. The multiple horizontal plates and vertical plates are equidistantly arranged vertically to form multiple small spaces arranged in a rectangular array. The friction block is composed of a plurality of small blocks made of rubber material. The cross-section of the small block is the same as the cross-section of the small space, and the two are slidingly arranged in a one-to-one correspondence. The multiple hard plates are fixedly connected to the multiple small blocks in a one-to-one correspondence.

[0017] Preferably, the blocking part is also fixedly connected to a cover body, a cavity is formed between the cover body and the blocking part, a first through hole is provided on the cover body, the cavity is connected to the first through hole, a regulating motor is installed in the cover body, the output shaft of the regulating motor is fixedly connected to a regulating disk, the regulating disk is provided with a second through hole, the blocking part is provided with a third through hole, the second through hole is connected to the pressurizing groove, and a sealing sliding arrangement is provided between the outer edge of the regulating disk and the cover body.

[0018] Preferably, a rectangular groove and a circular groove are opened in the small block, the rectangular groove is connected to the circular groove, a magnetic block is slidably arranged inside the rectangular groove, and has two magnetic poles, N and S. A magnetic rod is arranged in the through groove, and has two magnetic poles, N and S. The magnetic rod is fixedly connected to the regulating disk coaxially, and has two symmetrical semi-cylinders, which are two magnetic poles, N and S respectively.

[0019] Preferably, the occluder further comprises:

[0020] Cover body;

[0021] An adjustment slot is provided on the cover body;

[0022] An adjusting plate, wherein a sliding seal is arranged in the adjusting groove;

[0023] The air pipe is fixedly connected to the adjusting plate and passes through the adjusting plate.

[0024] A pressure pipeline maintenance method, using a pressure pipeline emergency plugging device, the plugging part plugs the fluid inside the pressure pipeline, including the following steps:

[0025] The cover is installed and fixed on the assembled pipe fittings, and the plugging device is placed inside the pressure pipe, so that the plugging part is in the right position, and then the inflation gas is applied into the trachea;

[0026] The gas enters the airbag through the air pipe, the curved groove and the through groove, causing the airbag to inflate. The inflated airbag is in close contact with the inner wall of the pressure pipe.

[0027] When the regulating motor is operated to rotate the regulating disk, the fluid in the pressure pipe enters the pressure tank through the first through hole, the second through hole and the third through hole, and exerts pressure on the inclined surface of the inclined plate in the pressure tank, thereby forming a component force away from the pressure tank. The component force causes the inclined plate to push the friction block so that the friction block is tightly against the inner wall of the pressure pipe.

[0028] The regulating motor controls the regulating disk to rotate 180°, and the N and S poles of the magnetic rod are interchanged, thereby magnetically attracting the magnetic block located in the small block. The magnetic block then slides in the small block to form negative pressure in the rectangular groove and the circular groove. The formation of negative pressure makes the small block fit more closely to the inner wall of the pressure pipe.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention utilizes the pressure of the fluid in the pressure pipe to exert pressure on the inclined surface of the inclined plate, so as to move the inclined plate and make the friction block approach and tightly contact the inner wall of the pressure pipe, and cooperate with the inflated airbag to enhance the friction resistance of the blocking part in the pressure pipe, that is, the pressure of the fluid in the pressure pipe is converted into friction resistance to adapt to blocking pressure pipes with a wider range of pressures. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure between the air pipe and the cover body in the plugger of the pressure pipeline emergency plugging device proposed by the present invention;

[0032] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0033] Figure 3 for Figure 2 Schematic diagram of partial structural decomposition;

[0034] Figure 4 It is a structural schematic diagram of the second through hole on the control disk and the third through hole on the plugging part in the pressure pipeline emergency plugging device proposed by the present invention;

[0035] Figure 5 It is a structural schematic diagram of two sealing discs and two inclined plates located between the two sealing discs in the pressure pipeline emergency plugging device proposed by the present invention;

[0036] Figure 6 This is a schematic cross-sectional structure diagram of the inclined plate in the pressure pipeline emergency plugging device proposed by the present invention;

[0037] Figure 7This is a schematic diagram of the internal structure of the frame and the small blocks constituting the friction block in the pressure pipeline emergency plugging device proposed by the present invention;

[0038] Figure 8 A schematic diagram of the position of the plugging part of the pressure pipeline emergency plugging device proposed by the present invention inside the pressure pipeline when plugging;

[0039] Fig. 9 This is a schematic diagram of the structural decomposition of the air pipe and the cover body in the blocking part of the pressure pipeline emergency blocking device proposed by the present invention.

[0040] In the figure: 1. trachea; 2. connecting part; 3. sealing part; 4. airbag; 5. pressurizing groove; 6. inclined plate; 7. friction block; 8. sealing disk; 9. frame; 10. changing groove; 11. hard plate; 12. spring; 13. cover body; 14. cavity; 15. first through hole; 16. regulating motor; 17. regulating disk; 18. second through hole; 19. third through hole; 20. rectangular groove; 21. circular groove; 22. magnetic block; 23. magnetic rod; 24. cover body; 25. adjusting groove; 26. adjusting plate; 27. curved groove; 28. through groove. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] Reference Figure 1 -Attached Fig. 9 , a pressure pipeline emergency plugging device, which contains a plugging device, includes:

[0043] Trachea 1;

[0044] The connecting portion 2 is fixedly connected to the trachea 1 and comprises a curved groove 27 communicating with the trachea 1;

[0045] The blocking portion 3 is fixedly connected to the connecting portion 2 and comprises a through groove 28 communicating with the curved groove 27;

[0046] The airbag 4 is fixedly sleeved on the outer periphery of the blocking portion 3 in an annular shape under normal conditions, and the air hole of the airbag 4 is connected to the through groove 28;

[0047] A pressurizing groove 5 is provided inside the sealing portion 3;

[0048] The inclined plate 6 is slidably arranged inside the pressurizing groove 5;

[0049] The friction block 7 is made of rubber material and is fixedly connected to the inclined plate 6;

[0050] Among them, the blocking part 3 enters the interior of the pressure pipe, the airbag 4 starts to inflate until it blocks the inner wall of the pressure pipe, the pressurizing groove 5 is connected with the pressure pipe, and the fluid in the pressure pipe enters the pressurizing groove 5 to pressurize the inclined surface of the inclined plate 6 so that the friction block 7 approaches the inner wall of the pressure pipe until it is tightly contacted.

[0051] Through the above technical solution, the pressure of the fluid in the pressure pipe is used to apply pressure on the inclined surface of the inclined plate 6, so that the inclined plate 6 is moved and the friction block 7 is brought close to and tightly against the inner wall of the pressure pipe, and cooperates with the inflated airbag 4 to enhance the friction resistance of the blocking part 3 in the pressure pipe. That is, the pressure of the fluid in the pressure pipe is converted into friction resistance to adapt to blocking pressure pipes with a larger range of pressures.

[0052] Two symmetrically arranged sealing discs 8 are fixedly connected in the pressurizing groove 5, and the inclined plate 6 is sealingly slidably disposed between the two.

[0053] Since different pressure pipes have different diameters, the curvature of the inner wall of the pressure pipe is also different, which makes it difficult to fit the friction block 7 in the pressure pipe, or the inner wall of the pressure pipe contains impurities that are difficult to clean, which will cause the actual contact area between the friction block 7 and the inner wall of the pressure pipe to be small and difficult to exert greater friction resistance. Therefore, improvements are made to the friction block 7:

[0054] A frame 9 is fixedly connected inside the blocking portion 3, and the frame 9 is composed of a circular plate, a plurality of transverse plates and a longitudinal plate. The plurality of transverse plates and the longitudinal plates are equidistantly and staggered vertically to form a plurality of small spaces arranged in a rectangular array. The friction block 7 is composed of a plurality of small blocks made of rubber material. The cross section of the small block is the same as the cross section of the small space, and the two are slidingly arranged in a one-to-one correspondence. A plurality of variable grooves 10 arranged in an array are provided in the inclined plate 6, and a hard sheet 11 is slidingly arranged in the variable groove 10. A spring 12 is provided in the variable groove 10, and both ends of the spring 12 are respectively connected to the variable groove 10 and the hard sheet 11, and the plurality of hard sheets 11 are fixedly connected to the plurality of small blocks in a one-to-one correspondence.

[0055] Through the above technical solution, the friction block 7 is divided into a plurality of small blocks, and the upper block and the lower block in each small block can be relatively far away from and close to each other. Then, when pressure is applied to the friction block 7, the lower block of each small block can move accordingly according to the inner wall of the pressure pipe and whether there are attachments on the inner wall and the size of the attachments, so that each hard plate 11 is in a different position in its sliding change groove 10. Then, compared with the original friction block 7, the improved friction block 7 can resist the inner wall of the pressure pipe with a larger contact area, so that the friction resistance formed by the friction block 7 is more effective.

[0056] The blocking portion 3 is also fixedly connected to a cover body 13, a cavity 14 is formed between the cover body 13 and the blocking portion 3, a first through hole 15 is provided in the cover body 13, the cavity 14 is communicated with the first through hole 15, a regulating motor 16 is installed in the cover body 13, an output shaft of the regulating motor 16 is fixedly connected to a regulating disk 17, the regulating disk 17 has a second through hole 18, the blocking portion 3 has a third through hole 19, the second through hole 18 is communicated with the pressurizing groove 5, and a sealing sliding arrangement is provided between the outer edge of the regulating disk 17 and the cover body 13.

[0057] A rectangular groove 20 and a circular groove 21 are provided in the small block, the rectangular groove 20 is connected with the circular groove 21, a magnetic block 22 is slidably provided inside the rectangular groove 20, and has two magnetic poles, N and S; a magnetic rod 23 is provided in the through groove 28, and has two magnetic poles, N and S; the magnetic rod 23 is coaxially fixedly connected to the regulating disk 17, and has two symmetrical semi-cylinders, which are respectively the two magnetic poles, N and S.

[0058] Occluders also include:

[0059] Cover 24;

[0060] An adjustment slot 25 is provided on the cover 24;

[0061] An adjustment plate 26, a sliding seal is arranged in the adjustment groove 25;

[0062] The air pipe 1 is fixedly connected to the adjustment plate 26 and passes through the adjustment plate 26 .

[0063] Working principle:

[0064] The cover body 24 is installed and fixed on the assembled pipe fittings, and the plugging device is placed inside the pressure pipe, so that the plugging part 3 is in the right position, and then the inflation gas is applied into the trachea 1;

[0065] The gas passes through the air pipe 1, the curved groove 27 and the through groove 28 and enters the air bag 4, causing the air bag 4 to inflate. The inflated air bag 4 is in close contact with the inner wall of the pressure pipe.

[0066] When the regulating motor 16 is operated to rotate the regulating disk, the fluid in the pressure pipe enters the pressure groove 5 through the first through hole 15, the second through hole 18 and the third through hole 19, and exerts pressure on the inclined surface of the inclined plate 6 in the pressure groove 5, forming a component force away from the pressure groove 5, and the component force causes the inclined plate 6 to push the friction block 7 so that the friction block 7 is tightly against the inner wall of the pressure pipe;

[0067] The regulating motor 16 controls the regulating disk to rotate 180°, and the N and S poles of the magnetic rod 23 are interchanged, thereby magnetically attracting the magnetic block 22 located in the small block. The magnetic block 22 slides in the small block to form a negative pressure in the rectangular groove 20 and the circular groove 21. The formation of negative pressure makes the small block fit more closely to the inner wall of the pressure pipe.

[0068] It should be noted that:

[0069] The relationship between the two magnetic poles in the magnetic block 22 and the magnetic rod 23 is that when the airbag 4 is in a normal state, the magnetic block 22 and the magnetic rod 23 are in a state of magnetic attraction. When the airbag 4 is in an inflated and expanded state, the magnetic rod 23 rotates 180° together with the control disk 17, and the magnetic poles change, resulting in magnetic repulsion between the magnetic rod 23 and the magnetic block 22.

[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Emergency plugging device for pressure pipeline, characterized in that: It contains an occluder, including: Trachea (1); A connecting portion (2) fixedly connected to the trachea (1) and comprising a curved groove (27) communicating with the trachea (1); The blocking portion (3) is fixedly connected to the connecting portion (2) and comprises a through groove (28) communicating with the curved groove (27); The airbag (4) is fixedly sleeved on the periphery of the blocking portion (3) in an annular shape under normal conditions, and the air hole of the airbag (4) is connected to the through groove (28); A pressurizing groove (5) is provided inside the blocking portion (3); An inclined plate (6) is slidably disposed inside the pressurizing groove (5); The friction block (7) is made of rubber material and is fixedly connected to the inclined plate (6); The sealing portion (3) enters the interior of the pressure pipe, the airbag (4) starts to inflate until the inner wall of the pressure pipe is sealed, the pressurizing groove (5) is connected to the pressure pipe, and the fluid in the pressure pipe enters the pressurizing groove (5) to apply pressure to the inclined surface of the inclined plate (6) so that the friction block (7) approaches the inner wall of the pressure pipe until it is tightly in contact with it.

2. The pressure pipeline emergency plugging device according to claim 1 is characterized in that: Two symmetrically arranged sealing disks (8) are fixedly connected in the pressure groove (5), and an inclined plate (6) is sealingly slidably arranged between the two. A plurality of variable grooves (10) arranged in an array are provided in the inclined plate (6), a hard plate (11) is slidably arranged in the variable groove (10), a spring (12) is arranged in the variable groove (10), and two ends of the spring (12) are respectively connected to the variable groove (10) and the hard plate (11).

3. The pressure pipeline emergency plugging device according to claim 2 is characterized in that: A frame (9) is fixedly connected inside the blocking portion (3), and the frame (9) is composed of a circular plate, a plurality of transverse plates and a longitudinal plate, and the plurality of transverse plates and the longitudinal plates are arranged vertically and staggered at equal intervals to form a plurality of small spaces arranged in a rectangular array. The friction block (7) is composed of a plurality of small blocks made of rubber material, and the cross section of the small block is the same as the cross section of the small space, and the two are slidingly arranged in a one-to-one correspondence. The plurality of hard plates (11) are fixedly connected to the plurality of small blocks in a one-to-one correspondence.

4. The pressure pipeline emergency plugging device according to claim 1, characterized in that: The blocking portion (3) is also fixedly connected to a cover body (13), a cavity (14) is formed between the cover body (13) and the blocking portion (3), a first through hole (15) is provided in the cover body (13), the cavity (14) is communicated with the first through hole (15), a regulating motor (16) is installed in the cover body (13), an output shaft of the regulating motor (16) is fixedly connected to a regulating disk (17), a second through hole (18) is provided in the regulating disk (17), a third through hole (19) is provided in the blocking portion (3), the second through hole (18) is communicated with the pressurizing groove (5), and a sealing sliding arrangement is provided between the outer edge of the regulating disk (17) and the cover body (13).

5. The pressure pipeline emergency plugging device according to claim 3 is characterized in that: A rectangular groove (20) and a circular groove (21) are provided in the small block, the rectangular groove (20) and the circular groove (21) are connected, a magnetic block (22) is slidably provided inside the rectangular groove (20) and has two magnetic poles, N and S, a magnetic bar (23) is provided in the through groove (28) and has two magnetic poles, N and S, the magnetic bar (23) is coaxially fixedly connected to the regulating disk (17), and the magnetic bar (23) has two symmetrical semi-cylinders, which are respectively the two magnetic poles, N and S.

6. The pressure pipeline emergency plugging device according to claim 1, characterized in that: Occluders also include: Cover body (24); An adjustment groove (25) is provided on the cover body (24); An adjustment plate (26) is slidingly sealed and arranged in the adjustment groove (25); The air pipe (1) is fixedly connected to the adjustment plate (26) and passes through the adjustment plate (26).

7. A pressure pipeline maintenance method, using the pressure pipeline emergency plugging device according to any one of claims 1 to 6, characterized in that: The operation of the blocking part (3) blocking the fluid inside the pressure pipe comprises the following steps: The cover body (24) is installed and fixed on the assembled pipe fittings, and the plugging device is placed inside the pressure pipe, so that the plugging part (3) is in the correct position, and then the inflation gas is applied into the trachea (1); The gas passes through the air pipe (1), the curved groove (27) and the through groove (28) and enters the interior of the air bag (4), causing the air bag (4) to inflate. The inflated air bag (4) is in close contact with the inner wall of the pressure pipe. When the regulating motor (16) is operated to rotate the regulating disk, the fluid in the pressure pipe enters the pressure groove (5) through the first through hole (15), the second through hole (18) and the third through hole (19), and exerts pressure on the inclined surface of the inclined plate (6) in the pressure groove (5), thereby forming a component force away from the pressure groove (5). The component force causes the inclined plate (6) to push the friction block (7) so that the friction block (7) is tightly pressed against the inner wall of the pressure pipe; The regulating motor (16) controls the regulating disk to rotate 180 degrees, and the N and S poles of the magnetic rod (23) are interchanged, thereby magnetically attracting the magnetic block (22) located in the small block. Then, the magnetic block (22) slides in the small block to form negative pressure in the rectangular groove (20) and the circular groove (21). The formation of negative pressure makes the small block fit more closely with the inner wall of the pressure pipe.

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