Underground concrete pipeline leaking stoppage device and leaking stoppage method thereof

Abstract

The invention provides an underground concrete pipeline leaking stoppage device and a leaking stoppage method thereof. The underground concrete pipeline leaking stoppage device comprises a to-be-repaired pipeline, an air bag component arranged in the to-be-repaired pipeline, a grouting cavity formed between the air bag component and the to-be-repaired pipeline, and two connecting pieces fixedly installed at the two ends of the air bag component correspondingly. The two air inflation pipes are installed on the two connecting pieces correspondingly, one ends of the air inflation pipes communicate with the air bag component, the two plugging components are installed on the two connecting pieces correspondingly, and the two adjusting assemblies are arranged between the two plugging components and the two connecting pieces correspondingly; according to the underground concrete pipeline leaking stoppage device and the leaking stoppage method thereof, the grouting cavity is formed in the to-be-repaired pipeline through the arranged air bag component and the two plugging components, the cement grout is injected into the grouting cavity, leakage repairing of the to-be-repaired pipeline between the two inspection wells can be completed at a time, the working efficiency of overall construction of leakage repairing operation is improved, and the construction period is shortened. Meanwhile, the construction period is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of urban road pipeline construction, and in particular to an underground concrete pipeline plugging device and a plugging method thereof. Background Art

[0002] Underground drainage pipes are mainly used to transport domestic sewage and remove rainwater in a timely manner. Therefore, this system plays a vital role in urban residents' lives and infrastructure construction.

[0003] During the construction of urban road drainage pipe networks, many sections of the road use reinforced concrete pipes with different pipe diameters, most of which are Φ300~Φ600. As time goes by, the traffic load on the upper part of some sections becomes larger and larger. In addition, the maintenance of the pipes is not in place. Many pipe networks have problems such as disconnection and leakage after a long time. For this problem, the local relevant responsible departments consider many ways to deal with it. The most thorough way is to dig out the original pipe and re-lay it, but there are many vehicles passing through the road section and the traffic is busy. The demolition construction needs to be fenced off as a whole, which will have a great impact on the traffic operation on urban roads and is easy to affect the environment during the construction process; another way is local treatment, such as using local resin curing treatment or ultraviolet light curing treatment, but this method is suitable for dealing with local or small sections of leakage points. It is very inconvenient to deal with sections with many leakage points in two inspection wells. The leakage points need to be treated in sections for many times, which takes a long time overall and has a high cost for repair.

[0004] In this case, a fast and efficient treatment method is needed to seal the leakage points inside the general concrete pipe in a shorter period of time without adversely affecting the traffic conditions on the road. Summary of the invention

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

[0006] In order to achieve the above-mentioned purpose, the present invention provides an underground concrete pipeline plugging device, comprising: a pipeline to be repaired, an airbag component arranged in the pipeline to be repaired, a grouting cavity arranged between the airbag component and the pipeline to be repaired, two connectors fixedly installed at both ends of the airbag component, two inflatable tubes respectively installed on the two connectors and one end of which is connected to the airbag component, two plugging components respectively installed on the two connectors, two adjusting components respectively arranged between the two plugging components and the two connectors, two mounting components respectively arranged on the two inflatable tubes, the plugging components and the adjusting components, and two fastening components respectively installed on opposite sides of the two plugging components, wherein

[0007] The two blocking components are suitable for shielding the two ends of the pipeline to be repaired, thereby improving the sealing performance of the grouting cavity;

[0008] The two installation assemblies are suitable for supporting the assembly and disassembly of the two blocking components on the two connecting pieces;

[0009] The two fastening assemblies are suitable for controlling the positions of the two blocking components, thereby improving the contact effect between the two blocking components and the two ends of the pipeline to be repaired.

[0010] Furthermore, the airbag component includes a supporting airbag whose two ends are respectively connected to the two connecting members, and a plurality of protective protrusions arranged on the surface of the supporting airbag;

[0011] The plurality of protection protrusions are arranged in a plum blossom shape, and the plurality of protection protrusions are against the inner wall of the pipeline to be repaired;

[0012] The protection convex block and the supporting airbag are integrally formed.

[0013] Furthermore, the sealing component includes a baffle that abuts against one end of the pipe to be repaired, a closing cover connected to the baffle and placed between the baffle and one of the connecting parts, a grouting pipe and an exhaust pipe symmetrically installed on the baffle and both connected to the grouting cavity, two sealing covers spirally installed on the grouting pipe and the exhaust pipe, respectively, and a rubber ring fixed to the baffle on the side close to the pipe to be repaired.

[0014] Further, the adjustment assembly includes an adjustment plate placed between the closure cover and one of the connecting members, two matching protrusions fixed on the closure cover and the adjustment plate, matching grooves provided on the adjustment plate and one of the connecting members and corresponding to the two matching protrusions respectively; and a plurality of magnetic blocks installed in an annular array on the adjustment plate;

[0015] The adjustment plate is magnetically connected to the closing cover and one of the connecting members through a plurality of magnetic blocks.

[0016] Furthermore, the mounting assembly includes a control ring rotatably connected to one of the inflation tubes, three limit blocks fixed in a ring arrangement on the control ring, three mounting screws threadedly mounted on the three limit blocks, two control grooves respectively opened on the closing cover and the adjustment plate, and three positioning grooves opened on the closing cover and corresponding to the three mounting screws respectively.

[0017] Further, the fastening assembly includes a position control cover arranged outside one end of the pipeline to be repaired, a plurality of position adjustment screws spirally mounted on the control cover in an annular array, and two positioning holes opened on the control cover and corresponding to the grouting pipe and the exhaust pipe respectively;

[0018] The ends of the plurality of adjusting screw rods are all against the baffle.

[0019] Furthermore, the fastening assembly also includes a plurality of positioning screws threadedly mounted on the control cover in an annular array, a plurality of positioning blocks rotatably connected to the ends of the plurality of positioning screws, and positioning convex patterns respectively arranged on the plurality of positioning blocks.

[0020] Furthermore, the two connecting pieces, the sealing member, the adjusting assembly and the fastening assembly are all made of steel material, and the surfaces of the two connecting pieces, the sealing member, the adjusting assembly and the fastening assembly are coated with perchlorethylene anti-corrosion paint or high-elastic spray polyurea waterproof paint.

[0021] Furthermore, connecting blocks are fixedly connected to the surfaces of the two connecting pieces, and eye bolts are screwed onto the two connecting blocks.

[0022] A method for plugging leakage in an underground concrete pipeline comprises the following specific steps:

[0023] S1. Manual cleaning of the inside of the pipe to be plugged. First, remove the debris accumulated in the pipe to expose the inner wall of the pipe to be repaired. Then observe the inner wall of the pipe to be repaired and deal with the parts such as nails and steel wires that may damage the airbag components.

[0024] S2. Use a water-blocking airbag to block the pipe opening in the water-incoming direction of the upstream section of the pipe to be repaired to prevent the incoming water from affecting the normal repair work of the pipe section;

[0025] S3. Lower the underwater robot at one end of the two inspection wells of the pipeline to be repaired, carry the traction rope to the other end, and tie it to the eye bolt. After the underwater robot is withdrawn, manually pull the traction rope at one end to install the airbag component in place. Before the airbag component is lowered into the pipeline, a layer of release agent needs to be applied on the outside to facilitate separation from the grouting liquid later;

[0026] S4, adjusting the airbag to a suitable position, connecting the two plugging components to the two ends of the airbag component through the two mounting components, and controlling the number of adjustment plates between the plugging components and the airbag so that the plugging components can abut against the two ends of the pipeline to be repaired, and placing fastening components at the two ends of the pipeline to be repaired so that the two plugging components can fit closely with the two ends of the pipeline to be repaired, and forming a grouting cavity between the airbag component and the pipeline to be repaired;

[0027] S5. Inflate the airbag component through two inflation tubes to expand it and fill the entire channel to be repaired, and stabilize its internal pressure. The internal pressure state does not change during the plugging process;

[0028] S6. Inject cement slurry into the grouting cavity through the grouting pipe on the plugging component. When the grouting starts, keep the exhaust pipe on the plugging component of the other inspection well section open. When cement slurry overflows from the exhaust pipe, it indicates that the inside of the pipeline is full of slurry. At this time, seal the exhaust pipe through the plugging cover and increase the grouting pressure of the grouting pipe. In the case of a long pipeline, grouting can be performed from the two grouting pipes on the two plugging components at the same time with the same pressure, so that the cement slurry can enter the wall of the pipeline to be repaired through the leakage point, thereby blocking the leakage point;

[0029] S7. Keep the grouting pressure for 15-20 minutes. Stop grouting when there is no obvious change in the grouting pressure. Then let it stand for about 45 minutes. After the grouting liquid solidifies and has a certain strength, extract the gas inside the airbag component and slowly extract the airbag component from the pipeline to be repaired. The plugging work of this section of the pipeline to be repaired is completed.

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

[0031] 1. The underground concrete pipeline plugging device and the plugging method thereof are provided by placing an airbag component into the pipeline to be repaired, and assembling plugging components on the connecting pieces at both ends of the airbag component to plug the two ends of the pipeline to be repaired, so that after the airbag component is inflated and fills the entire pipeline to be repaired, a grouting cavity is formed between the inner wall of the pipeline to be repaired and the airbag component, and cement slurry is injected into the grouting cavity. After the cement slurry solidifies, the plugging of the pipeline to be repaired is completed. Since the plugging is performed on the basis of the pipeline to be repaired, there is no need to dig out the pipeline and re-lay it, thereby avoiding a significant impact on the travel of surrounding residents and the operation of vehicle traffic, and solving the problem of time and material costs required for digging out the old pipeline in the entire road section and repurchasing and installing a new pipeline, thereby saving time and resources to a great extent;

[0032] 2. The underground concrete pipeline plugging device and the plugging method thereof fill the grouting cavity with cement slurry to repair the pipeline to be repaired. The cement slurry is a common material with low price, which solves the problem that other types of plugging methods require special materials and accessories with high material costs. Compared with the two treatments, the direct cost of the project can be reduced and the project cost can be saved. After the cement slurry is solidified, the leakage repair of the pipeline to be repaired between the two inspection wells can be completed at one time, which solves the problem that the leakage point needs to be treated in sections for many times in the previous repair process, which takes a long time. Relatively speaking, it can improve the overall construction work efficiency and save the construction period at the same time.

[0033] 3. The underground concrete pipe plugging device and the plugging method thereof can resist and adjust the distance between the two plugging components and the two ends of the pipe to be repaired by setting a fastening component when the two plugging components are respectively placed at the two ends of the pipe to be repaired, thereby ensuring that the rubber rings in the two pipes to be repaired are effectively squeezed between the pipes to be repaired and the plugging components, and then when cement slurry is injected into the grouting cavity and a certain pressure is maintained, the cement slurry will not leak, thereby ensuring that the cement slurry can effectively penetrate into the leakage point on the pipe to be repaired, effectively improving the plugging effect of the pipe to be repaired after the cement slurry is solidified. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

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

[0036] Figure 2 A cutaway view of the present invention is shown;

[0037] Figure 3 A partially cutaway perspective view of the present invention is shown;

[0038] Figure 4 The partially split stereoscopic view of the present invention is shown. Figure 1 ;

[0039] Figure 5 A partial perspective view of the present invention is shown;

[0040] Figure 6 The present invention partially splits the three-dimensional Figure 2 ;

[0041] Figure 7 The present invention is shown Figure 2 A magnified image of point A;

[0042] Figure 8 The present invention is shown Figure 3 The enlarged view of point B;

[0043] Fig. 9 The present invention is shown Figure 6 Enlarged view of point C.

[0044] In the figures, the same reference numerals denote the same structural elements, wherein:

[0045] 1. Pipeline to be repaired; 2. Airbag component; 3. Grouting cavity; 4. Connector; 5. Inflatable tube; 6. Sealing component; 7. Adjustment component; 8. Installation component; 9. Fastening component; 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. Adjustment 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. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0047] like Figure 1-9 As shown, an underground concrete pipeline plugging device 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 respectively fixedly mounted at both ends of the airbag component 2, two inflatable tubes 5 respectively mounted on the two connectors 4 and connected to the airbag component 2 at one end, two plugging components 6 respectively mounted on the two connectors 4, two adjusting components 7 respectively arranged between the two plugging components 6 and the two connectors 4, two mounting components 8 respectively arranged on the two inflatable tubes 5, the plugging components 6 and the adjusting components 7, and two fastening components 9 respectively mounted on opposite sides of the two plugging components 6, wherein

[0048] The two blocking components 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 installation assemblies 8 are suitable for supporting the assembly and disassembly of the two blocking components 6 on the two connecting members 4;

[0050] The two fastening components 9 are suitable for controlling the positions of the two blocking components 6, improving the contact effect between the two blocking components 6 and the two ends of the pipeline to be repaired 1. In the working state, the airbag component 2 is installed in place in the pipeline to be repaired 1 by an underwater robot in cooperation with manual labor, and then the two blocking components 6 are respectively installed on the connecting pieces 4 at the two ends of the airbag component 2 by the two installation components 8. While the two blocking components 6 are being installed, the distance between the two blocking components 6 and the connecting pieces 4 at the two ends of the airbag component 2 can be effectively adjusted by the adjustment component 7 while ensuring the sealing effect between the two blocking components 6 and the connecting pieces 4 at the two ends of the airbag component 2. , to adapt to the state of the pipeline to be repaired 1, to avoid the change of the overall length of the pipeline to be repaired 1 due to disconnection, which affects the assembly of the airbag component 2 and the plugging component 6 of the same specification on the pipeline to be repaired 1; and because the two plugging components are installed through the installation component 8, the two plugging components are ensured to be assembled conveniently and quickly, and after the leak repair of the pipeline to be repaired 1 is completed, the two plugging components can be quickly removed, and the airbag component 2 can be rolled up into a circle for storage, which does not take up space, is portable and convenient, and is easy to store and carry, solving the problems of large volume and heavy weight of most metal structures of similar leak plugging devices; and the two plugging components 6 are respectively against the two ends of the pipeline to be repaired 1 When the pipe 1 to be repaired is opened, the two sealing components 6 are pressed and adjusted to further improve the tightness of the two sealing components 6 and the two ends of the pipe 1 to be repaired. Then, air is injected into the airbag component 2 through the two inflation tubes 5. After the airbag component 2 expands and fills the entire inner wall of the pipe 1 to be repaired, a grouting cavity 3 is formed between the pipe 1 to be repaired and the airbag component 2. At this time, the stirred cement slurry is injected into the grouting cavity 3 through the grouting pipe 14 to fill the entire grouting cavity 3 and maintain a certain pressure. After the cement slurry solidifies, the overall leak repair of the pipe 1 to be repaired is completed, which saves time and has high construction efficiency. The mud liquid is a common material with low price, which solves the problem that other types of plugging methods require special materials and accessories with high material costs. Compared with the two treatments, it can reduce the direct cost of the project and save the project cost; and by replacing the air bag components 2 and the plugging components 6 of different sizes, it is suitable for repairing the leakage points of concrete pipes with a diameter of Φ200 to Φ600, and has a wide range of applications; and because the two plugging components 6 are tightly fitted to the two ends of the pipeline 1 to be repaired, it effectively prevents the cement slurry from leaking through the two ends of the pipeline 1 to be repaired, affecting the effect of the cement slurry infiltrating into the leakage points on the pipeline 1 to be repaired, and effectively ensures the leakage repair effect of the cement slurry after solidification;After the cement slurry is initially solidified to a certain strength, the gas in the airbag component 2 is extracted, and the airbag can be taken out from the pipeline to be repaired 1, thereby completing the plugging work of the pipeline to be repaired 1. The device can be reused for the same diameter pipeline to be repaired, which can save resources to a large extent. In addition, the plugging device can be reused after repairing on the basis of keeping the main body of the pipeline to be repaired 1 unchanged, avoiding the problem of large-scale excavation and re-paving of new pipelines, which requires the closure of the entire road section and has a great impact on the travel of surrounding residents and vehicle traffic operations, so that this treatment method has the lowest impact on the surrounding people and the environment. ;

[0051] Optionally, the airbag component 2 includes a supporting airbag 10 whose two ends are respectively connected to the two connecting members 4, and a plurality of protective protrusions 11 arranged on the surface of the supporting airbag 10;

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

[0053] The protective protrusion 11 and the supporting airbag 10 are integrally formed, the supporting airbag 10 is installed in place in the pipe to be repaired 1, and the installation of the two blocking components 6 is completed, and the supporting airbag 10 is inflated through the two inflation tubes 5 to expand it to fill the entire drainage pipe channel and stabilize its internal pressure. The internal pressure state does not change during the plugging process. At this time, a number of protective protrusions 11 are against the inner wall of the pipe to be repaired 1, and the outer surface of the supporting airbag 10 will form a grouting cavity 3 with the inner wall of the pipe to be repaired 1, which is convenient for the later filling of cement slurry inside.

[0054] Optionally, the blocking member 6 includes a baffle 12 abutting against one end of the pipeline to be repaired 1, a closing cover 13 connected to the baffle 12 and placed between the baffle 12 and one of the connecting members 4, a grouting pipe 14 and an exhaust pipe 15 symmetrically installed on the baffle 12 and both connected to the grouting cavity 3, two blocking covers 16 respectively spirally installed on the grouting pipe 14 and the exhaust pipe 15, and a rubber ring 17 fixed to the baffle 12 on the side of the pipeline to be repaired 1. After completing the assembly of the airbag member 2 in the pipeline to be repaired 1, the two closing covers 13 on the two blocking members 6 can be respectively assembled at the two ends of the airbag member 2 by the installation assembly 8. At this time, the two baffles 12 on the two blocking members 6 are respectively assembled at the two ends of the airbag member 2. The two ends of the pipeline 1 to be repaired are respectively against each other, and the rubber ring 17 provided can improve the sealing effect of the baffle 12 and the two ends of the pipeline 1 to be repaired; and when a sufficient amount of gas is filled in the airbag component 2 and it is opened for leak repair, the grouting pipe 14 and the exhaust pipe 15 on one of the plugging components can be opened, and cement slurry is injected into the grouting cavity 3 through the grouting pipe 14. When the cement slurry overflows from the exhaust pipe 15, it is shown that the inside of the grouting cavity 3 is full of cement slurry. At this time, the exhaust pipe 15 is blocked by the blocking cover 16, and the cement slurry can be waited for to solidify; and if the length of the pipeline 1 to be repaired is long, the grouting pipes 14 and the exhaust pipes 15 on the two plugging components can be driven at the same time, and the two grouting pipes 14 are grouted at the same pressure at the same time to ensure the leak repair efficiency of the pipeline 1 to be repaired.

[0055] Optionally, the adjustment assembly 7 includes an adjustment plate 18 placed between the closing cover 13 and one of the connecting members 4, two matching protrusions 19 fixed to the closing cover 13 and the adjustment plate 18, matching grooves 20 opened on the adjustment plate 18 and one of the connecting members 4 and corresponding to the two matching protrusions respectively; and a plurality of magnetic blocks 21 installed in an annular array on the adjustment plate 18;

[0056] The adjusting plate 18 is magnetically connected to the closing cover 13 and one of the connecting pieces 4 through a plurality of the magnetic blocks 21. Since the pipeline 1 to be repaired may leak due to disconnection during use, the overall length of part of the pipeline 1 to be repaired may change to a certain extent. After the airbag component 2 is installed in place in the pipeline 1 to be repaired, an adjusting plate 18 is first magnetically adsorbed on the connecting piece 4 at one end of the airbag component 2 through a plurality of magnetic blocks 21, and a plugging component 6 is connected to the adjusting plate 18 and the connecting piece 4 at one end of the airbag component 2 through the installation assembly 8. At this time, a certain amount of gas is first filled into the airbag component 2 through the inflation tube 5, so that the airbag frame is in an expanded state, and according to the change of the overall length of the pipeline 1 to be repaired In this state, the number of adjusting plates 18 can be added or reduced between the other plugging component 6 and the other end of the airbag component 2, thereby effectively changing the overall length of the plugging device to adapt to the pipeline 1 to be repaired in different situations. After the two plugging components 6 are installed, the two plugging components 6 can be respectively against the two ends of the pipeline 1 to be repaired to ensure that the airbag component 2 will not be piled up in the pipeline 1 to be repaired when it is deployed, thereby effectively improving the quality of the cement slurry in the grouting cavity 3 after solidification; and the matching convex ring 19 and the matching groove 20 are arranged to ensure the sealing effect of the contact position between the connecting piece 4 and the plugging component 6 and the adjusting plate 18, thereby avoiding leakage of cement slurry when injecting cement slurry into the grouting cavity 3.

[0057] Optionally, the mounting assembly 8 includes a control ring 22 rotatably connected to one of the inflation tubes 5, three limit blocks 23 annularly fixed to the control ring 22, three mounting screws 24 respectively threadedly mounted on the three limit blocks 23, two control grooves 25 respectively provided on the closing cover 13 and the adjusting plate 18, and three positioning grooves 26 provided on the closing cover 13 and corresponding to the three mounting screws 24 respectively. Before the device is used, the airbag component 2 and the two blocking components 6 are in a separated state, and the airbag component 2 can be rolled up into a circle for storage, which does not take up space, is portable and easy to store and carry; when the device is used, the airbag component 2 is pre-installed in place in the pipeline 1 to be repaired, and then the two closing covers 13 can be respectively aligned with the two connecting pieces 4 on the airbag component 2, and the two control grooves on the two closing covers 13 are ... The grooves 25 are respectively aligned with the two control rings 22 and the plurality of limit blocks 23 on the two inflation tubes 5. When the two closing covers 13 are respectively abutted against the two connecting pieces 4 through the two adjusting components 7, the two control rings 22 can be rotated so that the three limit blocks 23 on the two control rings 22 are respectively staggered with the two control grooves 25. At this time, the plurality of mounting screws 24 on the plurality of limit blocks 23 are respectively rotated. When the plurality of mounting screws 24 are respectively abutted against the two closing covers 13, the assembly of the two plugging components 6 is completed, and the two baffles 12 on the two plugging components 6 are respectively abutted against the two ends of the pipeline 1 to be repaired. By setting the mounting component 8, the two plugging components 6 can be assembled and disassembled conveniently and quickly, and the plugging efficiency of the pipeline 1 to be repaired can be effectively improved. Moreover, when the distance between the plugging component 6 and the airbag component 2 is controlled by the adjusting component 7, the plugging component 6 can still be effectively assembled.

[0058] Optionally, the fastening assembly 9 includes a position control cover 27 disposed outside one end of the pipeline to be repaired 1, a plurality of position adjustment screws 28 spirally mounted on the control cover in an annular array, and two positioning holes 29 opened on the control cover and corresponding to the grouting pipe 14 and the exhaust pipe 15 respectively;

[0059] The ends of the plurality of positioning screws 28 are all against the baffles 12. When the two plugging components 6 are respectively installed at the two ends of the airbag component 2, and the two baffles 12 on the two plugging components 6 are respectively against the two ends of the pipeline 1 to be repaired, the two control covers 27 in the two fastening components 9 are respectively installed at the two ends of the pipeline 1 to be repaired, and the plurality of positioning screws 28 are rotated. Under the push of the plurality of positioning screws 28, the two baffles 12 can be made to be close to the two ends of the pipeline 1 to be repaired, and with the cooperation of the two rubber rings 17, the two ends of the pipeline 1 to be repaired are effectively sealed to ensure the sealing of the grouting cavity 3, and to ensure that when cement slurry is subsequently injected into the grouting cavity 3 and a certain amount of grouting pressure is maintained, leakage occurs at the two ends of the pipeline 1 to be repaired, so that the cement slurry with a certain injection pressure can effectively seal the leakage point.

[0060] Optionally, the fastening assembly 9 also includes a plurality of positioning screws 30 threadedly installed on the control cover in an annular array, a plurality of positioning blocks 31 respectively connected to the ends of the plurality of positioning screws 30, and positioning convex grooves 32 respectively arranged on the plurality of positioning blocks 31. After the airbag component 2 is installed in place in the pipe to be repaired 1 and the installation of the two blocking components 6 is completed, the control cover 27 can be set on one end of the pipe to be repaired 1 and the plurality of positioning screws 30 can be rotated. When the plurality of positioning blocks 31 are against the outer wall of the pipe to be repaired 1, the stability of the control cover sleeve on the pipe to be repaired 1 can be ensured, thereby effectively improving the resistance effect on the baffle 12 after the subsequent adjustment of the blocking component 6.

[0061] Optionally, the two connectors 4, the sealing member 6, the adjustment component 7 and the fastening component 9 are all made of steel material, and the surfaces of the two connectors 4, the sealing member 6, the adjustment component 7 and the fastening component 9 are coated with perchloroethylene anti-corrosion paint or highly elastic spray polyurea waterproof coating. The service life of the plugging device is effectively improved by being made of steel, and the coated perchloroethylene anti-corrosion paint or highly elastic spray polyurea waterproof coating can prevent the plugging device from being corroded and damaged when used in an inspection well.

[0062] Optionally, the surfaces of the two connecting members 4 are fixedly connected with connecting blocks 33, and the two connecting blocks 33 are spirally installed with eyebolts 34. When it is necessary to place the supporting airbag 10 in the pipeline to be repaired 1, the traction rope passing through the pipeline to be repaired 1 can be tied to the eyebolt 34, and then while pulling the traction rope, the connecting member 4 can be controlled to drive one end of the supporting airbag 10 to move in the pipeline to be repaired 1, thereby ensuring that the airbag component 2 is installed in place in the pipeline to be repaired 1, facilitating the subsequent use of the airbag component 2 and facilitating the operation of the staff.

[0063] A method for plugging leakage in an underground concrete pipeline comprises the following specific steps:

[0064] S1. Manually clean the inside of the pipe to be plugged. First, remove the debris accumulated 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 deal with the parts such as nails and steel wires that may damage the airbag component 2.

[0065] S2, using a water-blocking airbag to block the pipe opening of the upstream water-incoming section of the pipe to be repaired 1, to prevent the incoming water from affecting the normal repair work of the pipe section;

[0066] S3, lower an underwater robot at one end of the two inspection wells of the pipeline 1 to be repaired, carry the traction rope to the other end, and tie it to the eye bolt 34. After the underwater robot is withdrawn, manually pull the traction rope at one end to install the airbag component 2 in place. Before the airbag component 2 is lowered into the pipeline, a layer of release agent needs to be applied on the outside to facilitate separation from the grouting liquid later;

[0067] S4, adjust the airbag to a suitable position, connect the two plugging components 6 to the two ends of the airbag component 2 through the two installation components 8, and control the number of adjustment plates 18 between the plugging components 6 and the airbag, so that the plugging components 6 can be against the two ends of the pipeline to be repaired 1, and install fastening components 9 at both ends of the pipeline to be repaired 1, so that the two plugging components 6 can be tightly fitted with the two ends of the pipeline to be repaired 1, and a grouting cavity 3 is formed between the airbag component 2 and the pipeline to be repaired 1;

[0068] S5, inflate the airbag component 2 through the two inflation tubes 5, so that it expands and fills the entire channel to be repaired, and stabilizes its internal pressure. The internal pressure state does not change during the plugging process;

[0069] S6, inject cement slurry into the grouting cavity 3 through the grouting pipe 14 on the plugging member 6. When the grouting starts, keep the exhaust pipe 15 on the plugging member 6 of the other inspection well section open. When cement slurry overflows from the exhaust pipe 15, it indicates that the inside of the pipeline 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 a long pipeline, grouting can be performed simultaneously from the two grouting pipes 14 on the two plugging members 6 at the same pressure, so that the cement slurry can enter the wall of the pipeline 1 to be repaired through the leakage point, thereby blocking the leakage point;

[0070] S7. Keep the grouting pressure for 15-20 minutes. Stop grouting when there is no obvious change in the grouting pressure. Then let it stand for about 45 minutes. After the grouting liquid solidifies and has a certain strength, extract the gas inside the airbag component 2. Slowly extract the airbag component 2 from the pipeline 1 to be repaired. The plugging work of this section of the pipeline 1 to be repaired is completed.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An underground concrete pipeline plugging device, characterized in that: include: 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 connecting pieces (4) respectively fixedly mounted on both ends of the airbag component (2), two air-filled tubes (5) respectively mounted on the two connecting pieces (4) and one end of which is connected to the airbag component (2), two plugging components (6) respectively mounted on the two connecting pieces (4), two adjusting components (7) respectively arranged between the two plugging components (6) and the two connecting pieces (4), two mounting components (8) respectively arranged on the two air-filled tubes (5), the plugging components (6) and the adjusting components (7), and two fastening components (9) respectively mounted on opposite sides of the two plugging components (6), wherein The two blocking components (6) are suitable for shielding the two ends of the pipeline (1) to be repaired, thereby improving the sealing performance of the grouting cavity (3); The two mounting assemblies (8) are suitable for supporting the assembly and disassembly of the two blocking components (6) on the two connecting members (4); The two fastening assemblies (9) are suitable for controlling the positions of the two blocking components (6), thereby improving the contact effect between the two blocking components (6) and the two ends of the pipeline to be repaired (1).

2. The underground concrete pipe plugging device according to claim 1, characterized in that: The airbag component (2) comprises a supporting airbag (10) whose two ends are respectively connected to the two connecting members (4), and a plurality of protective protrusions (11) arranged on the surface of the supporting airbag (10); The plurality of protection protrusions (11) are arranged in a plum blossom shape, and the plurality of protection protrusions (11) are all against the inner wall of the pipeline to be repaired (1); The protective protrusion (11) and the supporting airbag (10) are integrally formed.

3. The underground concrete pipe plugging device according to claim 2, characterized in that: The blocking member (6) comprises a baffle (12) abutting against one end of the pipeline (1) to be repaired, a sealing cover (13) connected to the baffle (12) and placed between the baffle (12) and one of the connecting members (4), a grouting pipe (14) and an exhaust pipe (15) symmetrically mounted on the baffle (12) and both connected to the grouting cavity (3), two blocking covers (16) respectively screwed onto the grouting pipe (14) and the exhaust pipe (15), and a rubber ring (17) fixed to the baffle (12) on a side close to the pipeline (1) to be repaired.

4. The underground concrete pipe plugging device according to claim 3, characterized in that: The adjustment assembly (7) comprises an adjustment plate (18) disposed between the closing cover (13) and one of the connecting members (4), two mating protruding rings (19) fixed on the closing cover (13) and the adjustment plate (18), mating grooves (20) provided on the adjustment plate (18) and one of the connecting members (4) and corresponding to the two mating protruding blocks respectively; and a plurality of magnetic blocks (21) mounted in an annular array on the adjustment plate (18); The adjustment plate (18) is magnetically connected to the closing cover (13) and one of the connecting members (4) via a plurality of magnetic blocks (21).

5. The underground concrete pipe plugging device according to claim 4, characterized in that: The mounting assembly (8) comprises a control ring (22) rotatably connected to one of the inflation tubes (5), three limit blocks (23) fixed in an annular arrangement on the control ring (22), three mounting screws (24) respectively threadedly mounted on the three limit blocks (23), two control grooves (25) respectively provided on the closing cover (13) and the adjustment plate (18), and three positioning grooves (26) provided on the closing cover (13) and corresponding to the three mounting screws (24).

6. The underground concrete pipe plugging device according to claim 3, characterized in that: The fastening assembly (9) comprises a position control cover (27) which is arranged outside one end of the pipeline to be repaired (1), a plurality of position adjustment screws (28) which are spirally mounted on the control cover in an annular array, and two positioning holes (29) which are provided on the control cover and correspond to the grouting pipe (14) and the exhaust pipe (15) respectively; The ends of the plurality of adjusting screw rods (28) are in contact with the baffle plate (12).

7. The underground concrete pipe plugging device according to claim 6, characterized in that: The fastening assembly (9) further comprises a plurality of positioning screws (30) threadedly mounted on the control cover in an annular array, a plurality of positioning blocks (31) respectively rotatably connected to the ends of the plurality of positioning screws (30), and positioning convex patterns (32) respectively arranged on the plurality of positioning blocks (31).

8. The underground concrete pipe plugging device according to claim 1, characterized in that: The two connecting pieces (4), the blocking member (6), the adjusting assembly (7) and the fastening assembly (9) are all made of steel material, and the surfaces of the two connecting pieces (4), the blocking member (6), the adjusting assembly (7) and the fastening assembly (9) are all coated with perchlorethylene anticorrosive paint or high-elastic spray polyurea waterproof paint.

9. The underground concrete pipeline plugging device according to claim 8, characterized in that: The surfaces of the two connecting members (4) are both fixedly connected with connecting blocks (33), and the two connecting blocks (33) are both spirally mounted with eye bolts (34).

10. A method for plugging leakage in an underground concrete pipeline, characterized in that: The pipeline plugging device according to any one of claims 1 to 9 comprises the following specific steps: S1. Manually clean the inside of the pipe to be plugged. First, remove the debris accumulated in the pipe so that the inner wall of the pipe to be repaired (1) is exposed. Then observe the inner wall of the pipe to be repaired (1) and deal with the parts that may cause damage to the airbag component (2) such as nails and steel wires. S2. Using a water-blocking airbag to block the pipe opening of the upstream water-incoming section of the pipe to be repaired (1) to prevent the incoming water from affecting the normal repair work of the pipe section; S3, lowering an underwater robot at one end of the two inspection wells of the pipeline to be repaired (1) and carrying a traction rope to the other end, tying it to the eye bolt (34), after the underwater robot is withdrawn, manually pulling the traction rope at one end to install the airbag component (2) in place, and before the airbag component (2) is lowered into the pipeline, a layer of mold release agent needs to be applied on the outside to facilitate separation from the grouting liquid later; S4, adjusting the airbag to a suitable position, connecting the two plugging components (6) to the two ends of the airbag component (2) by means of two mounting components (8), and controlling the number of adjusting plates (18) between the plugging components (6) and the airbag so that the plugging components (6) can abut against the two ends of the pipeline to be repaired (1), and arranging fastening components (9) at the two ends of the pipeline to be repaired (1) so that the two plugging components (6) can fit tightly against the two ends of the pipeline to be repaired (1), and forming a grouting cavity (3) between the airbag component (2) and the pipeline to be repaired (1); S5, inflating the airbag component (2) through two inflation tubes (5) to expand it and fill the entire channel to be repaired, and stabilizing its internal pressure. 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 component (6). When the grouting starts, keep the exhaust pipe (15) on the plugging component (6) of the other inspection well section open. When 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 a long pipeline, grouting can be performed simultaneously at the same pressure from the two grouting pipes (14) on the two plugging components (6), so that the cement slurry can enter the wall of the pipeline (1) to be repaired through the leakage point, thereby blocking the leakage point; S7. The grouting pressure is maintained for 15-20 minutes. When there is no significant change in the grouting pressure, the grouting can be stopped. The grouting is then left to stand for about 45 minutes. After the grouting liquid solidifies and has a certain strength, the gas inside the airbag component (2) is extracted. The airbag component (2) is slowly extracted from the pipeline to be repaired (1). The plugging work of this section of the pipeline to be repaired (1) is then completed.

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