An underground concrete pipeline plugging device and a plugging method thereof

Abstract

The application provides an underground concrete pipeline leaking stoppage device and a leaking stoppage method thereof, which comprises a pipeline to be repaired, an air bag component arranged in the pipeline to be repaired, a grouting cavity arranged between the air bag component and the pipeline to be repaired, two connecting components fixedly arranged at two ends of the air bag component respectively, two inflation tubes arranged on the two connecting components respectively and connected with the air bag component at one end, two sealing components arranged on the two connecting components respectively, and two adjusting assemblies arranged between the two sealing components and the two connecting components respectively. The underground concrete pipeline leaking stoppage device and the leaking stoppage method thereof form the grouting cavity in the pipeline to be repaired by the air bag component and the two sealing components, and the cement slurry is injected into the grouting cavity, so that the leakage repair of the pipeline to be repaired between two inspection wells can be completed at one time, the working efficiency of the overall construction of the leakage repair operation is improved, and the construction period is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of urban road pipeline construction, in particular to an underground concrete pipeline leak-stopping device and a leak-stopping method thereof. BACKGROUND

[0002] Underground drainage pipelines are mainly used for conveying domestic sewage and timely draining rainwater, and thus the system plays a vital role in urban residents' life and infrastructure construction.

[0003] In the construction process of urban road drainage pipeline network, reinforced concrete pipelines are used in many road sections, and the pipe diameters are various, with more Φ300-Φ600 pipe diameters. With the passage of time, the vehicle load borne by the upper part of some road sections becomes larger and larger, and the maintenance work of the pipelines is not in place. After a long time, many pipeline networks have problems such as dislocation and leakage. For this problem, the local relevant responsible departments have many ways to consider for treatment. The most thorough way is to dig out the original pipeline and rebuild it, but there are many vehicles on the road section, and the traffic is busy. The whole construction needs to be surrounded, which will have a great impact on the traffic operation on the urban road and easily affect the environment during the construction. Another way is to locally treat, such as using local resin curing treatment or ultraviolet curing treatment, but this method is suitable for treating local or small leakage point sections. It is very inconvenient to treat the road section with many leakage points in two inspection wells, and it needs to treat the leakage points in multiple sections, which needs a long time and has a high repair cost.

[0004] In this case, a fast and efficient treatment method is needed to improve the leakage point sealing of the general concrete pipeline in a short time, and the traffic condition of the road surface should not be adversely affected. SUMMARY

[0005] The purpose of the present application is to provide an underground concrete pipeline leak-stopping device and a leak-stopping method thereof to solve the above problems.

[0006] In order to achieve the above purpose, the present application provides an underground concrete pipeline leak-stopping device, which comprises: a pipeline to be repaired, an air bag member arranged in the pipeline to be repaired, a grouting cavity arranged between the air bag member and the pipeline to be repaired, two connecting members fixedly installed at both ends of the air bag member, two inflation tubes installed on the two connecting members and connected with the air bag member at one end, two sealing members installed on the two connecting members, two adjusting assemblies arranged between the two sealing members and the two connecting members, two mounting assemblies arranged on the two inflation tubes, sealing members and adjusting assemblies, and two fastening assemblies installed on the opposite sides of the two sealing members, wherein

[0007] Two of the sealing members are adapted to shield two ends of the pipeline to be repaired, thereby improving the sealing performance of the grouting cavity;

[0008] Two of the mounting assemblies are adapted to support the two sealing members during assembly and disassembly of the two connectors;

[0009] Two of the fastening assemblies are adapted to control the position of the two sealing members, thereby improving the contact effect of the two sealing members with the two ends of the pipeline to be repaired.

[0010] Further, the air bag member comprises a supporting air bag connected to the two connectors respectively at two ends, and a plurality of protective protrusions arranged on the surface of the supporting air bag;

[0011] The plurality of protective protrusions are arranged in a quincunx shape, and each of the plurality of protective protrusions abuts against the inner wall of the pipeline to be repaired.

[0012] The protective protrusions are integrally formed with the supporting air bag.

[0013] Further, the sealing member comprises a baffle abutting against one end of the pipeline to be repaired, a closure cover connected to the baffle and arranged between the baffle and one of the connectors, a grouting pipe and an exhaust pipe symmetrically mounted on the baffle and connected to the grouting cavity respectively, two sealing covers screw-mounted on the grouting pipe and the exhaust pipe respectively, and a rubber ring fixed to the side of the baffle close to the pipeline to be repaired.

[0014] Further, the adjusting assembly comprises an adjusting plate arranged between the closure cover and one of the connectors, two engagement protrusions fixed to the closure cover and the adjusting plate, an engagement groove opened in the adjusting plate and one of the connectors and corresponding to the two engagement protrusions respectively, and a plurality of magnetic blocks arranged in an annular array on the adjusting plate.

[0015] The adjusting plate is magnetically connected to the closure cover and one of the connectors through the plurality of magnetic blocks.

[0016] Further, the mounting assembly comprises a control ring rotationally connected to one of the inflation pipes, three limiting blocks fixed in an annular array on the control ring, three mounting screws screw-mounted on the three limiting blocks respectively, two control grooves opened in the closure cover and the adjusting plate respectively, and three positioning grooves opened in the closure cover and corresponding to the three mounting screws respectively.

[0017] Further, the fastening assembly comprises a control cover arranged outside one end of the pipeline to be repaired, a plurality of positioning screws arranged in an annular array on the control cover, and two positioning holes provided on the control cover and corresponding to the grouting pipe and the exhaust pipe respectively.

[0018] The ends of the plurality of positioning screws are in abutment with the baffle.

[0019] Further, the fastening assembly further comprises a plurality of positioning screws arranged in an annular array on the control cover, a plurality of positioning blocks rotatably connected to the ends of the plurality of positioning screws respectively, and positioning protrusions provided on the plurality of positioning blocks respectively.

[0020] Further, the two connecting members, the plugging members, the adjusting assemblies and the fastening assembly are made of steel material, and the surfaces of the two connecting members, the plugging members, the adjusting assemblies and the fastening assembly are coated with perchloroethylene anticorrosive paint or high-elasticity sprayed polyurea waterproof paint.

[0021] Further, the surfaces of the two connecting members are fixedly connected with connecting blocks, and the two connecting blocks are spirally installed with lifting ring bolts.

[0022] A method for plugging a leaking underground concrete pipeline, comprising the following specific steps:

[0023] S1, manually cleaning the inside of the pipeline to be repaired, first removing the accumulated sundries in the pipeline to expose the inner wall of the pipeline to be repaired, then observing the inner wall of the pipeline to be repaired, and treating the positions where iron nails, steel wires and the like will damage the air bag member;

[0024] S2, plugging the pipeline opening of the upstream water direction section of the pipeline to be repaired with a water plugging air bag to prevent the incoming water from affecting the normal repair work of the section of the pipeline;

[0025] S3, lowering the underwater robot carrying a traction rope to the other end of the two inspection wells of the pipeline to be repaired, tying the traction rope on the lifting ring bolt, and after the underwater robot exits, manually pulling the traction rope at one end to install the air bag member in place, and before the air bag member goes down the pipeline, a release agent needs to be brushed on the outside to facilitate separation from the grouting liquid in the later period;

[0026] S4, adjusting the air bag to a suitable position, connecting the two plugging members to the two ends of the air bag member through the two installation assemblies provided, controlling the number of adjusting plates between the plugging members and the air bag, so that the plugging members can abut against the two ends of the pipeline to be repaired, and arranging the fastening assembly at the two ends of the pipeline to be repaired, so that the two plugging members can tightly adhere to the two ends of the pipeline to be repaired, and forming a grouting cavity between the air bag member and the pipeline to be repaired;

[0027] S5, inflate the air bag member inside through two inflation pipes, so that it expands to fill the entire channel to be repaired, and stabilizes the internal pressure, which does not change during the plugging process;

[0028] S6, inject cement slurry into the injection cavity inside through the injection pipe on the plugging member, keep the exhaust pipe on the plugging member of the other inspection well open at the beginning of injection, and when the cement slurry overflows from the exhaust pipe, it indicates that the pipe inside has been filled with slurry, at this time, the exhaust pipe is sealed by the plugging cover, and the injection pressure of the injection pipe is increased, in the case of long pipeline, the cement slurry can enter the wall of the pipeline to be repaired through the leakage point, so as to plug the leakage point;

[0029] S7, keep the injection pressure for 15-20 minutes, stop injection after the injection pressure does not change obviously, and then stand for about 45 minutes, after the injection slurry solidifies and has certain strength, the gas inside the air bag member is extracted, and the air bag member is slowly extracted from the pipeline to be repaired, then the plugging work of the pipeline to be repaired is completed.

[0030] Compared with the prior art, the present application has the following beneficial effects:

[0031] 1. The underground concrete pipeline plugging device and its plugging method, by setting the air bag member into the pipeline to be repaired, and assembling the plugging member on the connecting piece at both ends of the air bag member, the both ends of the pipeline to be repaired are plugged, so that after the air bag member is inflated and expanded to fill the entire pipeline to be repaired, an injection cavity is formed between the inner wall of the pipeline to be repaired and the air bag member, cement slurry is injected into the injection cavity, and after the cement slurry solidifies, the plugging of the pipeline to be repaired is completed, since the plugging is carried out on the basis of the pipeline to be repaired, it is not necessary to dig out and re-lay the pipeline, which avoids great influence on the travel of surrounding residents and the operation of vehicles, and solves the problems of time and material cost required for digging out the old pipeline and purchasing and installing a new pipeline along the whole section, thereby greatly saving time and resources;

[0032] 2. The underground concrete pipeline plugging device and its plugging method, which repairs the pipeline to be repaired by filling the injection cavity with cement slurry, and the cement slurry is a common material with low price, which solves the problem of high material cost of special materials and accessories required by other plugging methods, and can reduce direct engineering cost and save engineering cost by comparison, since the leakage repair between two inspection wells can be completed at one time after the cement slurry solidifies, the problem of long time required for multiple segmented treatment of leakage points in the previous repair process is solved, the overall construction efficiency is improved, and the construction period is saved;

[0033] 3、The underground concrete pipeline plugging device and the plugging method thereof, through the setting of the fastening assembly, when the two plugging members are respectively placed at the two ends of the pipeline to be repaired, the distance between the two plugging members and the two ends of the pipeline to be repaired can be abutted and adjusted, so that the rubber rings in the two pipelines to be repaired are effectively extruded between the pipeline to be repaired and the plugging member, and then when the cement slurry is injected into the grouting cavity and kept at a certain pressure, the cement slurry will not leak, so that the cement slurry can effectively penetrate into the leakage points on the pipeline to be repaired, and the plugging effect of the cement slurry on the pipeline to be repaired after solidification is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] The application will be further described below in combination with the drawings and examples.

[0035] Figure 1 A perspective view of the application is shown;

[0036] Figure 2 A sectional view of the application is shown;

[0037] Figure 3 A partially sectional perspective view of the application is shown;

[0038] Figure 4 A partially exploded perspective view of the application is shown; Figure 1

[0039] Figure 5 A partially sectional perspective view of the application is shown;

[0040] Figure 6 A partially exploded perspective view of the application is shown; Figure 2

[0041] Figure 7 An enlarged view of A of the application is shown; Figure 2

[0042] An enlarged view of B of the application is shown; Figure 8 Figure 3

[0043] Figure 9 An enlarged view of C of the application is shown. Figure 6 In the drawings, the same reference signs denote the same structural elements, wherein:

[0044]

[0045] ​​​​​1. Pipeline to be repaired; 2. Airbag component; 3. Grouting cavity; 4. Connector; 5. Inflatable tube; 6. Sealing component; 7. Adjustment assembly; 8. Installation assembly; 9. Fastening assembly; 10. Support airbag; 11. Protective convex block; 12. Baffle; 13. Closing cover; 14. Grouting pipe; 15. Exhaust pipe; 16. Sealing cover; 17. Rubber ring; 18. Adjustment plate; 19. Fitting convex ring; 20. Fitting groove; 21. Magnetic block; 22. Control ring; 23. Limit block; 24. Installation screw; 25. Control groove; 26. Positioning groove; 27. Positioning cover; 28. Positioning screw; 29. ​​Positioning hole; 30. Positioning screw; 31. Positioning block; 32. Positioning convex pattern; 33. Connecting block; 34. Eyebolt. DETAILED DESCRIPTION

[0046] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0047] like Figures 1-9 As shown, a device for plugging leaks in an underground concrete pipeline comprises: a pipeline to be repaired 1, an airbag component 2 arranged in the pipeline to be repaired 1, a grouting cavity 3 arranged between the airbag component 2 and the pipeline to be repaired 1, two connectors 4 fixedly mounted on both ends of the airbag component 2, two inflation tubes 5 respectively mounted on the two connectors 4 and connected to the airbag component 2 at one end, two blocking components 6 respectively mounted on the two connectors 4, two adjusting assemblies 7 respectively arranged between the two blocking components 6 and the two connectors 4, two mounting assemblies 8 respectively arranged on the two inflation tubes 5, the blocking components 6 and the adjusting assemblies 7, and two fastening assemblies 9 respectively mounted on opposite sides of the two blocking components 6, wherein

[0048] The two blocking members 6 are suitable for shielding the two ends of the pipeline to be repaired 1, thereby improving the sealing performance of the grouting cavity 3;

[0049] The two mounting assemblies 8 are adapted to support the assembly and disassembly of the two blocking members 6 on the two connecting members 4;

[0050] Two said fastening components 9 are suitable for controlling the positions of two said plugging members 6, improving the contact effect of two said plugging members 6 with two ends of said pipe to be repaired 1. In the working state, the air bag member 2 is installed in place in the pipe to be repaired 1 by underwater robots and manual work, then two plugging members 6 are installed on the connecting members 4 at two ends of the air bag member 2 through two installation components 8, while two plugging members 6 are being installed, the distance between two plugging members 6 and the connecting members 4 at two ends of the air bag member 2 can be effectively adjusted to adapt to the state of the pipe to be repaired 1, so as to avoid the change of the overall length of the pipe to be repaired 1 due to disconnection, which affects the assembly of the air bag member 2 and the plugging member 6 on the pipe to be repaired 1; and since two plugging components are installed through the installation component 8, the assembly of two plugging components is convenient and fast, and after the repair of the pipe to be repaired 1 is completed, two plugging components can be quickly removed, at this time the air bag member 2 can be rolled up into a circle for storage, which does not occupy space, is portable and convenient, and is easy to store and carry, solving the problems of large size and heavy weight of most metal structures of similar plugging devices; when two plugging members 6 respectively abut against two ends of the pipe to be repaired 1, fastening components 9 can be installed at two ends of the pipe to be repaired 1 to extrude and position two plugging members 6, further improving the tightness of two plugging members 6 and two ends of the pipe to be repaired 1, then air is injected into the air bag member 2 through two inflation tubes 5, after the air bag member 2 is inflated to fill the entire inner wall of the pipe to be repaired 1, a grouting cavity 3 is formed between the pipe to be repaired 1 and the air bag member 2, at this time cement slurry is injected into the grouting cavity 3 through the grouting pipe 14, so as to fill the entire grouting cavity 3 and maintain a certain pressure, after the cement slurry solidifies, the repair of the entire pipe to be repaired 1 is completed, time is saved, and the construction efficiency is high; the cement slurry is a common material with low price, solving the problem of high material cost of special materials and accessories required by other types of plugging methods, and reducing the direct cost of the project and saving the cost of the project compared with two kinds of treatment; by replacing air bag members 2 and plugging members 6 of different sizes, the device is suitable for repairing leakage points of concrete pipes with a diameter of Φ200-Φ600, and has a wide range of applications; since two plugging members 6 are tightly fitted with two ends of the pipe to be repaired 1, cement slurry leakage through two ends of the pipe to be repaired 1 is effectively avoided, which affects the effect of cement slurry penetrating into the leakage point on the pipe to be repaired 1, effectively ensuring the repair effect of the cement slurry after solidification;After the cement slurry is preliminarily solidified and has certain strength, the gas in the air bag member 2 is extracted, the air bag is taken out from the pipeline 1 to be repaired, and the plugging work of the pipeline 1 to be repaired is completed. The device can be repeatedly used for the same pipeline diameter to be repaired, can save resources to a large extent, and can be used again after repairing by keeping the pipeline 1 to be repaired unchanged, thereby avoiding the problem that the new pipeline needs to be constructed by large excavation, the whole road section needs to be closed and surrounded, and the traffic of surrounding residents and vehicles is greatly affected, so that the treatment method has the least influence on the surrounding people and the environment.

[0051] Optionally, the air bag member 2 comprises a supporting air bag 10 connected with two connection members 4 at two ends, and a plurality of protection protrusions 11 arranged on the surface of the supporting air bag 10.

[0052] The plurality of protection protrusions 11 are arranged in a plum blossom shape, and the plurality of protection protrusions 11 are in abutment with the inner wall of the pipeline 1 to be repaired.

[0053] The protection protrusions 11 and the supporting air bag 10 are integrally formed, the supporting air bag 10 is installed in place in the pipeline 1 to be repaired, the installation of the two plugging members 6 is completed, the supporting air bag 10 is inflated by the two inflation pipes 5, the supporting air bag 10 is inflated to fill the entire pipeline channel, and the internal pressure is stable. During the plugging process, the internal pressure state does not change, at this time, the plurality of protection protrusions 11 are in abutment with the inner wall of the pipeline 1 to be repaired, the outer surface of the supporting air bag 10 forms a grouting cavity 3 with the inner wall of the pipeline 1 to be repaired, and the cement slurry is filled in the cavity 3.

[0054] Optionally, the plugging component 6 comprises a baffle 12 abutting against one end of the pipe to be repaired 1, a closure cover 13 connected to the baffle 12 and arranged between the baffle 12 and one of the connecting pieces 4, a grouting pipe 14 and an exhaust pipe 15 symmetrically installed on the baffle 12 and both in communication with the grouting cavity 3, two plugging covers 16 respectively screw-installed on the grouting pipe 14 and the exhaust pipe 15, and a rubber ring 17 fixed to the baffle 12 close to one side of the pipe to be repaired 1. After the assembly of the air bag component 2 in the pipe to be repaired 1 is completed, the two closure covers 13 of the two plugging components 6 can be assembled at the two ends of the air bag component 2 through the installation assembly 8, at this time, the two baffles 12 of the two plugging components 6 abut against the two ends of the pipe to be repaired 1 respectively, and the rubber ring 17 arranged can improve the sealing effect of the baffles 12 and the two ends of the pipe to be repaired 1. When a sufficient amount of gas is filled in the air bag component 2 and the leaking repair operation is performed, the grouting pipe 14 and the exhaust pipe 15 of one of the plugging assemblies can be opened, the cement slurry is injected into the grouting cavity 3 through the grouting pipe 14, and when the cement slurry overflows from the exhaust pipe 15, the inside of the grouting cavity 3 is filled with the cement slurry, at this time, the exhaust pipe 15 is plugged through the plugging cover 16, and the cement slurry is solidified. If the length of the pipe to be repaired 1 is longer, the grouting pipes 14 and the exhaust pipes 15 of the two plugging assemblies can be driven at the same time, the two grouting pipes 14 are injected with cement slurry at the same pressure to ensure the efficiency of the leaking repair of the pipe to be repaired 1.

[0055] Optionally, the adjusting assembly 7 comprises an adjusting plate 18 arranged between the closure cover 13 and one of the connecting pieces 4, two engagement convex rings 19 fixed to the closure cover 13 and the adjusting plate 18, an engagement groove 20 opened on the adjusting plate 18 and one of the connecting pieces 4 and corresponding to the two engagement convex rings 19 respectively, and a plurality of magnetic blocks 21 arranged in an annular array on the adjusting plate 18.

[0056] The adjusting plate 18 is connected with the closure cover 13 and one of the connecting pieces 4 by the magnetic attraction of the magnetic attraction blocks 21. Since the pipeline 1 to be repaired will leak due to disconnection in use, the overall length of the pipeline 1 to be repaired will change. After the air bag member 2 is installed in place in the pipeline 1 to be repaired, one adjusting plate 18 is first connected with the connecting piece 4 at one end of the air bag member 2 by the magnetic attraction of the magnetic attraction blocks 21, and the connection of one of the closure members 6 with the adjusting plate 18 and the connecting piece 4 at one end of the air bag member 2 is completed by the installation assembly 8. At this time, a certain amount of gas is first filled into the air bag member 2 through the inflation pipe 5, so that the air bag frame is in an expanded state. According to the change of the overall length of the pipeline 1 to be repaired, the number of adjusting plates 18 can be increased or decreased between the other closure member 6 and the air bag member 2 at the other end. Thus, the overall length of the plugging device can be effectively changed to adapt to the pipeline 1 to be repaired in different situations. After the installation of the two closure members 6 is completed, the air bag member 2 can be ensured not to be accumulated in the pipeline 1 to be repaired in the expanded state when the two closure members 6 abut against the two ends of the pipeline 1 to be repaired, thereby effectively improving the quality of the cement grout solidified in the grouting cavity 3. The sealing effect of the contact position of the connecting piece 4 and the closure member 6 with the adjusting plate 18 can be ensured by the cooperation of the matching convex ring 19 and the matching groove 20, so as to avoid the leakage of the cement grout when the cement grout is injected into the grouting cavity 3.

[0057] Optionally, the mounting assembly 8 comprises a control ring 22 rotatably connected to one of the inflatable pipes 5, three limiting blocks 23 fixed in an annular array on the control ring 22, three mounting screws 24 respectively threadedly installed on the three limiting blocks 23, two control grooves 25 respectively formed on the closure cover 13 and the adjusting plate 18, and three positioning grooves 26 formed on the closure cover 13 and respectively corresponding to the three mounting screws 24. Before use, the air bag member 2 and the two closure members 6 are in a separated state, and the air bag member 2 can be rolled up and stored in a circle, which is space-saving, portable, convenient to store and carry. When the device is used, the air bag member 2 is installed in place in the pipeline to be repaired 1 in advance, then the two closure covers 13 are respectively aligned with the two connecting members 4 on the air bag member 2, and the two control grooves 25 on the two closure covers 13 are respectively aligned with the two control rings 22 and the limiting blocks 23 on the two inflatable pipes 5. When the two closure covers 13 are respectively abutted against the two connecting members 4 through the two adjusting assemblies 7, the two control rings 22 are rotated, the three limiting blocks 23 on the two control rings 22 are staggered with the two control grooves 25, and then the mounting screws 24 on the limiting blocks 23 are respectively rotated. When the mounting screws 24 are respectively abutted against the two closure covers 13, the assembly of the two closure members 6 is completed, and the two flaps 12 on the two closure members 6 are respectively abutted against the two ends of the pipeline to be repaired 1. The mounting assembly 8 can ensure the convenience and speed of assembly and disassembly of the two closure members 6, effectively improve the plugging efficiency of the pipeline to be repaired 1, and still effectively assemble the closure members 6 when the distance between the closure members 6 and the air bag member 2 is controlled by the adjusting assembly 7.

[0058] Optionally, the fastening assembly 9 comprises a control cover 27 covering the outside of one end of the pipeline to be repaired 1, a plurality of adjusting screws 28 annularly and spirally installed on the control cover 27, and two positioning holes 29 formed on the control cover 27 and respectively corresponding to the grouting pipe 14 and the exhaust pipe 15.

[0059] The end of the plurality of position adjusting screws 28 abuts against the baffle plate 12, when the two plugging members 6 are installed at both ends of the pipeline to be repaired 1, and the two baffle plates 12 on the two plugging members 6 abut against both ends of the pipeline to be repaired 1 respectively, at this time, the two position control covers 27 in the two fastening assemblies 9 are installed at both ends of the pipeline to be repaired 1 respectively, and the plurality of position adjusting screws 28 are rotated, so that the two baffle plates 12 abut against both ends of the pipeline to be repaired 1 under the pushing of the plurality of position adjusting screws 28, and the two rubber rings 17 are cooperated, so as to effectively seal both ends of the pipeline to be repaired 1, ensure the sealing of the grouting cavity 3, ensure that the cement slurry is injected into the grouting cavity 3, and maintain a certain amount of grouting pressure, and when the two ends of the pipeline to be repaired 1 leak, the cement slurry with a certain injection pressure can effectively plug the leakage point.

[0060] Optionally, the fastening assembly 9 further comprises a plurality of positioning screws 30 which are annularly arranged and threadedly installed on the position control cover 27, a plurality of positioning blocks 31 which are respectively connected to the ends of the plurality of positioning screws 30, and positioning convex stripes 32 which are respectively arranged on the plurality of positioning blocks 31, after the air bag member 2 is installed in place in the pipeline to be repaired 1 and the installation of the two plugging members 6 is completed, the position control cover 27 is covered on one end of the pipeline to be repaired 1, and the plurality of positioning screws 30 are rotated, so that the plurality of positioning blocks 31 abut against the outer wall of the pipeline to be repaired 1, thereby ensuring the stability of the position control cover 27 on the pipeline to be repaired 1, and effectively improving the abutting effect of the baffle plate 12 after the subsequent adjustment of the plugging member 6.

[0061] Optionally, the two connecting members 4, the plugging member 6, the adjusting assembly 7 and the fastening assembly 9 are all made of steel material, and the surfaces of the two connecting members 4, the plugging member 6, the adjusting assembly 7 and the fastening assembly 9 are coated with perchloroethylene anticorrosive paint or high-elasticity sprayed polyurea waterproof paint, so as to effectively prolong the service life of the leak stopping device, and the coated perchloroethylene anticorrosive paint or high-elasticity sprayed polyurea waterproof paint can avoid the corrosion and damage of the leak stopping device when it is used in the inspection well.

[0062] Optionally, the surfaces of the two connecting members 4 are fixedly connected with connecting blocks 33, and lifting ring bolts 34 are spirally installed on the two connecting blocks 33, when the supporting air bag 10 needs to be placed in the pipeline to be repaired 1, the traction rope passing through the pipeline to be repaired 1 is tied on the lifting ring bolt 34, so that the connecting member 4 drives one end of the supporting air bag 10 to move in the pipeline to be repaired 1 when the traction rope is pulled, thereby ensuring that the air bag member 2 is installed in place in the pipeline to be repaired 1, facilitating the subsequent use of the air bag member 2, and facilitating the operation of the workers.

[0063] A leak stopping method for an underground concrete pipeline, comprising the following specific steps:

[0064] S1, the artificial cleaning needs to block the pipeline inside, first is to remove the pipeline 1 inside the accumulated sundries, so that the inner wall of the pipeline to be repaired is exposed, and then the inner wall of the pipeline to be repaired is observed, and the positions of iron nails, steel wires and other positions which can damage the air bag component 2 are treated;

[0065] S2, the water inflow direction section of the pipeline to be repaired 1 is blocked by the water blocking air bag, so as to prevent the water inflow from affecting the normal repair work of the section of the pipeline;

[0066] S3, the underwater robot is placed at one end of the two inspection wells of the pipeline to be repaired 1, and carries a traction rope to the other end, which is tied on the lifting ring bolt 34. After the underwater robot exits, the traction rope is pulled manually at one end, so that the air bag component 2 is installed in place. Before the air bag component 2 is lowered into the pipeline, a release agent needs to be brushed on the outside to facilitate the separation of the grouting liquid in the later period;

[0067] S4, adjust the air bag to the appropriate position, connect the two blocking components 6 with the air bag component 2 at both ends through the two installed assemblies 8, control the number of adjusting plates 18 between the blocking component 6 and the air bag, so that the blocking component 6 can abut against the two ends of the pipeline to be repaired 1, and the fastening assembly 9 is arranged at the two ends of the pipeline to be repaired 1, so that the two blocking components 6 can tightly adhere to the two ends of the pipeline to be repaired 1, and the grouting cavity 3 is formed between the air bag component 2 and the pipeline to be repaired 1;

[0068] S5, inflate the air bag component 2 inside through the two inflation pipes 5, so that it expands to fill the entire repaired channel, and the internal pressure state does not change during the plugging process;

[0069] S6, inject cement grouting liquid into the grouting cavity 3 through the grouting pipe 14 on the blocking component 6. At the beginning of grouting, keep the exhaust pipe 15 on the blocking component 6 of the other inspection well section open. When the cement grouting liquid overflows from the exhaust pipe 15, it indicates that the pipeline inside has been filled with grouting liquid. At this time, the exhaust pipe 15 is sealed by the blocking cover 16, and the grouting pressure of the grouting pipe 14 is increased. In the case of long pipeline, the two grouting pipes 14 on the two blocking components 6 can be used to inject grouting liquid at the same pressure, so that the cement grouting liquid can enter the wall of the pipeline to be repaired 1 through the leakage point, thereby sealing the leakage point;

[0070] S7, keep the grouting pressure for 15-20 min, and stop grouting when the grouting pressure does not change obviously. Then, stand still for about 45 min, and then extract the gas in the air bag component 2, and slowly extract the air bag component 2 from the pipeline to be repaired 1. Then, the plugging work of the section of the pipeline to be repaired 1 is completed.

[0071] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. An underground concrete pipe leak stoppage device, characterized by, Include: The pipeline (1) to be repaired, the air bag component (2) provided in the pipeline (1) to be repaired, the grouting cavity (3) provided between the air bag component (2) and the pipeline (1) to be repaired, two connecting pieces (4) fixedly installed at both ends of the air bag component (2) respectively, two inflation tubes (5) installed on the two connecting pieces (4) respectively and one end connected with the air bag component (2), two blocking components (6) installed on the two connecting pieces (4) respectively, two adjusting assemblies (7) provided between the two blocking components (6) and the two connecting pieces (4) respectively, two mounting assemblies (8) provided on the two inflation tubes (5), blocking components (6) and adjusting assemblies (7) respectively, and two fastening assemblies (9) installed on the opposite sides of the two blocking components (6) respectively, wherein The two blocking components (6) are adapted to shield both ends of the pipeline (1) to be repaired, thereby improving the sealing performance of the grouting cavity (3); The two mounting assemblies (8) are adapted to support the two blocking components (6) during assembly and disassembly of the two connecting pieces (4); The two fastening assemblies (9) are adapted to control the position of the two blocking components (6) and improve the contact effect between the two blocking components (6) and both ends of the pipeline (1) to be repaired; The blocking component (6) comprises a baffle (12) abutting one end of the pipeline (1) to be repaired, a closed cover (13) connected to the baffle (12) and arranged between the baffle (12) and one of the connecting pieces (4), a grouting pipe (14) and an exhaust pipe (15) symmetrically installed on the baffle (12) and both connected with the grouting cavity (3), two blocking covers (16) screwedly installed on the grouting pipe (14) and the exhaust pipe (15) respectively, and a rubber ring (17) fixed to the side of the baffle (12) close to the pipeline (1) to be repaired; The adjusting assembly (7) comprises an adjusting plate (18) arranged between the closed cover (13) and one of the connecting pieces (4), two engagement convex rings (19) fixed to the closed cover (13) and the adjusting plate (18), an engagement groove (20) opened on the adjusting plate (18) and one of the connecting pieces (4) and corresponding to the two engagement convex rings (19) respectively, and a plurality of magnetic attraction blocks (21) arranged in an annular array on the adjusting plate (18); and The adjusting plate (18) is magnetically connected with the closed cover (13) and one of the connecting pieces (4) through the plurality of magnetic attraction blocks (21). The mounting assembly (8) comprises a control ring (22) rotatably connected to one of the inflatable pipes (5), three limiting blocks (23) fixed in an annular array on the control ring (22), three mounting screws (24) respectively threadedly mounted on the three limiting blocks (23), two control grooves (25) respectively formed on the closed cover (13) and the adjusting plate (18), and three positioning grooves (26) formed on the closed cover (13) and respectively corresponding to the three mounting screws (24); The fastening assembly (9) comprises a control cover (27) covering the outside of one end of the pipe to be repaired (1), a plurality of position adjusting screws (28) screw-mounted in an annular array on the control cover (27), and two positioning holes (29) formed on the control cover (27) and respectively corresponding to the grouting pipe (14) and the exhaust pipe (15); The ends of the plurality of position adjusting screws (28) abut against the baffle (12).

2. The underground concrete pipe plugging device according to claim 1, wherein the air bag member (2) comprises a supporting air bag (10) connected to the two connecting members (4) respectively, and a plurality of protection protrusions (11) arranged on the surface of the supporting air bag (10); The plurality of protection protrusions (11) are arranged in a plum blossom shape, and the plurality of protection protrusions (11) all abut against the inner wall of the pipe to be repaired (1); The protection protrusions (11) are integrally formed with the supporting air bag (10).

3. The underground concrete pipe plugging device according to claim 1, wherein the fastening assembly (9) further comprises a plurality of positioning screws (30) screw-mounted in an annular array on the control cover (27), a plurality of positioning blocks (31) rotatably connected to the ends of the plurality of positioning screws (30), and positioning protrusions (32) arranged on the plurality of positioning blocks (31) respectively.

4. The underground concrete pipe plugging device according to claim 1, wherein the two connecting members (4), the plugging member (6), the adjusting assembly (7) and the fastening assembly (9) are all made of steel material, and the surfaces of the two connecting members (4), the plugging member (6), the adjusting assembly (7) and the fastening assembly (9) are coated with perchloroethylene anticorrosive paint or high-elasticity sprayed polyurea waterproof paint.

5. The underground concrete pipe plugging device according to claim 4, wherein the surfaces of the two connecting members (4) are fixedly connected with connecting blocks (33), and the connecting blocks (33) are screw-mounted with lifting ring bolts (34) respectively. The pipe plugging device according to any one of claims 1-5 comprises the following specific steps: S1, manually clean the inside of the pipe to be repaired, first remove the accumulated sundries in the pipe to expose the inner wall of the pipe to be repaired (1), then observe the inner wall of the pipe to be repaired (1), and treat the positions where iron nails, steel wires and the like will damage the air bag member (2). ​ ​ 6. A method of sealing a concrete underground pipe, characterized by, ​ ​ S2, the water inflow direction section of the upstream of the pipeline to be repaired (1) is blocked by the water plugging air bag to prevent the inflow of water from affecting the normal repair work of the section pipeline; S3, the underwater robot carries the traction rope to the other end of the two inspection wells of the pipeline to be repaired (1), and is tied on the hanging ring bolt (34). After the underwater robot exits, the traction rope is pulled manually at one end to install the air bag member (2) in place. Before the air bag member (2) is lowered into the pipeline, a release agent needs to be brushed on the outside to facilitate separation from the grouting liquid later; S4, adjust the air bag to the appropriate position, connect the two plugging members (6) with the two ends of the air bag member (2) through the two installed assemblies (8), control the number of adjusting plates (18) between the plugging members (6) and the air bag, so that the plugging members (6) can abut against the two ends of the pipeline to be repaired (1), and the fastening assembly (9) is arranged at the two ends of the pipeline to be repaired (1), so that the two plugging members (6) can tightly adhere to the two ends of the pipeline to be repaired (1), and the grouting cavity (3) is formed between the air bag member (2) and the pipeline to be repaired (1); S5, inflate the air bag member (2) through the two inflation pipes (5) to make it expand and fill the entire repair channel, and the internal pressure state does not change during the plugging process; S6, inject cement slurry into the grouting cavity (3) through the grouting pipe (14) on the plugging member (6). At the beginning of grouting, keep the exhaust pipe (15) on the plugging member (6) of the other inspection well section open. When the cement slurry overflows from the exhaust pipe (15), it indicates that the grouting cavity (3) is full of slurry. At this time, the exhaust pipe (15) is sealed by the plugging cover (16), and the grouting pressure of the grouting pipe (14) is increased. In the case of long pipeline, the cement slurry can enter the wall of the pipeline to be repaired (1) through the leakage point to plug the leakage point by injecting the cement slurry from the two grouting pipes (14) on the two plugging members (6) at the same pressure; S7, continuously maintain the grouting pressure for 15-20 min. After the grouting pressure does not change significantly, stop grouting, and then stand for about 45 min. After the grouting liquid solidifies and has a certain strength, the gas in the air bag member (2) is extracted, and the air bag member (2) is slowly extracted from the pipeline to be repaired (1), and the plugging work of this section of the pipeline to be repaired (1) is completed.

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