Underwater leakage plugging device and underwater plugging process

Abstract

The present invention discloses an underwater leakage plugging device and underwater plugging process, which belongs to the technical field of dam leakage plugging. The device comprises two groups of feed pipes connected to a diving bell, and further comprises: a connecting seat fixedly connected to a grouting pipe, the connecting seat being connected to the two groups of feed pipes; a grouting conversion joint fixedly connected to the grouting pipe; a plugging plate detachably connected to the grouting conversion joint; a baffle slidably connected to the plugging plate, and when the plugging plate is installed on the grouting conversion joint; the present invention adopts a linkage design of a storage chamber, a sliding plug and a limiting airbag. When the pressure in the grouting hole increases due to slurry injection, the slurry will be squeezed into the storage chamber and push the sliding plug to slide, so that the gas in the storage chamber is filled into the limiting airbag through the air supply chamber; after the limiting airbag is inflated, it swells and squeezes into the small depression on the inner wall of the grouting hole, forming a multi-point anchoring structure, greatly improving the friction and bite force between the plugging plate and the hole wall, effectively preventing the plugging plate from being pushed out of the grouting hole, and ensuring that the grouting process is not interrupted.

Description

Technical Field

[0001] The present invention relates to the technical field of dam leakage blocking technology, and in particular to an underwater leakage blocking device and an underwater blocking process. Background Art

[0002] Deepwater dams are large-scale hydraulic engineering structures built in deepwater areas. During daily use, deepwater dams may leak due to water erosion and aging of the main body. Therefore, when leakage is discovered in the dam body, it is necessary to promptly seal the leakage location. When performing sealing treatment in the existing technology, a set of grouting holes are generally pre-drilled at the leakage location of the dam body, and then a grouting head is used to inject sealing slurry into the grouting holes.

[0003] However, when the existing technology is performing the plugging operation, as the slurry is continuously injected, the pressure in the grouting hole may be too high. At this time, the plugging plate blocking the grouting hole may be pushed out, and water may flow into the grouting hole, affecting the normal progress of the grouting work; and after grouting, the slurry requires a certain amount of solidification time. If the grouting head and the plugging plate are withdrawn immediately, the water flow may flush the plugging slurry that has not been completely solidified, which may affect the solidification of the slurry. Part of the slurry may also be washed away by the water flow, affecting the final plugging effect. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems raised in the background technology and to propose an underwater leakage plugging device and an underwater plugging process.

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

[0006] An underwater leakage plugging device includes two sets of material delivery pipes connected to a diving bell, and further includes: a connecting seat fixedly connected to a grouting pipe, the connecting seat being connected to the two sets of material delivery pipes;

[0007] A grouting conversion joint is fixedly connected to the grouting pipe and communicates with the grouting pipe;

[0008] The orifice plugging plate is detachably connected to the grouting conversion joint; the orifice plugging plate is slidably connected to a baffle;

[0009] When the plugging is completed, the diving bell pulls the grouting conversion joint out of the plugging plate, and the two sets of baffles slide close to each other, and the joint installation hole on the plugging plate is blocked by the two sets of baffles that are offset;

[0010] The orifice blocking plate is provided with a material storage cavity, a sliding plug is slidably connected to the material storage cavity, and the orifice blocking plate is provided with an air supply cavity, the material storage cavity and the air supply cavity are connected;

[0011] The side wall of the hole blocking plate is connected to a plurality of groups of limiting air bags, which are evenly distributed on the hole blocking plate; the air supply cavity is connected to the limiting air bags;

[0012] When the slurry fills the grouting hole on the left, the slurry is squeezed into the storage chamber and pushes the slide plug to slide, the gas in the storage chamber is sent into the air supply chamber, and the limiting airbag on the side wall of the plugging plate is inflated and squeezed into the small depression on the inner wall of the grouting hole.

[0013] Preferably, a first sliding cavity is provided in the hole blocking plate, and a limiting rod is slidably connected in the first sliding cavity;

[0014] Furthermore, the sliding plug and the limiting rod are both provided with arc-shaped yielding surfaces.

[0015] Furthermore, a second spring is fixedly connected to the limiting rod, and one end of the second spring away from the limiting rod is fixedly connected to the inner wall of the first sliding cavity.

[0016] When the sliding plug slides, the sliding plug squeezes and pushes the limiting rod to slide down along the first sliding cavity. After the sliding plug slides for a distance, the limiting rod slides up and is clamped into the sliding plug.

[0017] Furthermore, a second sliding cavity is provided in the hole blocking plate, the baffle is slidably connected in the second sliding cavity, an elastic pull rope is fixedly connected to the baffle, and the elastic pull rope is fixedly connected to the limiting rod;

[0018] When the two groups of baffles slide towards each other, the baffles pull the limit rod through the elastic pull rope, the limit rod is pulled out of the slide plug, and the slide plug slides and resets to extrude the slurry in the storage chamber, and the extruded slurry fills the residual gap on the left side of the baffle.

[0019] Furthermore, a one-way air supply pipe is fixedly connected to the bottom of the limiting airbag, and one end of the one-way air supply pipe away from the limiting airbag is communicated with the air supply cavity.

[0020] Furthermore, a connecting pipe is fixedly connected to the orifice blocking plate, one end of the connecting pipe is connected to the air supply cavity, the other end of the connecting pipe is connected to the material storage cavity, and a one-way valve is connected to the connecting pipe.

[0021] Furthermore, a first spring is fixedly connected to the sliding plug, and one end of the first spring away from the sliding plug is fixedly connected to the inner wall of the storage cavity.

[0022] Furthermore, a third spring is fixedly connected to the baffle, and one end of the third spring away from the baffle is fixedly connected to the inner top wall of the second sliding cavity.

[0023] An underwater plugging process, using the underwater leakage plugging device, comprises the following steps:

[0024] Step 1: Use a lifting tool to place the diving bell connected to the grouting adapter into the water and move it to the pre-drilled grouting hole;

[0025] Step 2: Use the diving bell to push the grouting adapter into the grouting hole, and use the plugging plate to plug the grouting hole;

[0026] Step 3: The two sets of storage tanks in the diving bell pump the two raw materials into the grouting conversion joint through the feed pipe, mix them, and then inject them into the grouting hole for filling;

[0027] Step 4. After the grouting is completed, the diving bell pulls the grouting conversion joint out, and the two sets of baffles on the plugging plate slide out towards each other and abut against each other. The abutted baffles block the joint mounting holes on the plugging plate, and at the same time, the baffles slide to pull the limit rod, and the sliding plug slides back to its original position to push out the liquid in the storage chamber and fill the residual gap on the side of the baffle.

[0028] Compared with the prior art, the present invention provides an underwater leakage plugging device and underwater plugging process, which have the following beneficial effects:

[0029] The present invention adopts the linkage design of the storage chamber, the sliding plug and the limiting airbag. When the pressure in the grouting hole increases due to the injection of slurry, the slurry will be squeezed into the storage chamber and push the sliding plug to slide, so that the gas in the storage chamber is filled into the limiting airbag through the air supply chamber; after the limiting airbag is inflated, it swells up and squeezes into the small depressions on the inner wall of the grouting hole, forming a multi-point anchoring structure, which greatly improves the friction and bite force between the plugging plate and the hole wall, effectively resists the thrust under high pressure, avoids the plugging plate from being pushed out of the grouting hole, and ensures that the grouting process is not interrupted.

[0030] After the grouting is completed, the diving bell pulls out the grouting conversion joint, and the two sets of baffles slide together under the action of the third spring to block the joint installation hole on the plugging plate, thereby preventing water from flowing into the grouting hole through the joint installation hole to flush the unsolidified slurry; at the same time, the limiting airbag is kept inflated by the one-way air pipe, continuously squeezing the inner wall of the grouting hole, so that the plugging plate remains stably in the grouting hole until the slurry is completely solidified, effectively solving the problem of slurry being easily flushed due to the removal of the grouting head and the plugging plate in the prior art, thereby ensuring the final sealing effect of the dam body. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of an underwater leakage plugging device proposed by the present invention;

[0032] Figure 2 A cross-sectional view of a diving bell in an underwater leakage plugging device proposed by the present invention;

[0033] Figure 3This is a schematic diagram of the connection structure between the grouting conversion joint and the plugging plate in the underwater leakage plugging device proposed by the present invention;

[0034] Figure 4 This is a cross-sectional view of a plugging plate in an underwater leakage plugging device proposed by the present invention;

[0035] Figure 5 An underwater leakage blocking device proposed by the present invention Figure 4 A magnified view of part A in FIG;

[0036] Figure 6 An underwater leakage blocking device proposed by the present invention Figure 5 A magnified view of part B in FIG;

[0037] Figure 7 This is a cross-sectional view of a grouting conversion joint in an underwater leakage plugging device proposed by the present invention;

[0038] Figure 8 This is a schematic structural diagram of the underwater leakage plugging device proposed by the present invention when the baffles abut against each other;

[0039] Figure 9 An underwater leakage blocking device proposed by the present invention Figure 8 A magnified view of part C in FIG;

[0040] Figure 10 This is a structural cross-sectional view of Example 3 of an underwater leakage plugging device proposed by the present invention;

[0041] Figure 11 This is a structural cross-sectional view of Example 4 of an underwater leakage plugging device proposed by the present invention.

[0042] In the figure: 1. Diving bell; 101. Storage tank; 2. Grouting pump; 201. Feed pipe; 3. Connecting seat; 301. Grouting pipe; 4. Orifice plug; 401. Storage chamber; 4011. Limiting ring; 402. Second sliding chamber; 403. Air supply chamber; 404. Connecting pipe; 405. Limiting air bag; 406. One-way air supply pipe; 5. Grouting conversion joint; 501. Sliding sealing ring; 6. Baffle; 601. Elastic pull rope; 7. Sliding plug; 701. Arc-shaped give way surface; 702. First spring; 8. First sliding chamber; 801. Limiting rod; 802. Second spring; 9. Third spring; 10. First magnet; 11. Second magnet; 12. Third magnet; 13. Fourth magnet. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] Example 1: Reference Figures 1-4 An underwater leakage plugging device includes two sets of feed pipes 201 connected to a diving bell 1, and further includes: a connecting seat 3 fixedly connected to a grouting pipe 301, the connecting seat 3 being connected to the two sets of feed pipes 201;

[0045] The grouting conversion joint 5 is fixedly connected to the grouting pipe 301 and communicates with the grouting pipe 301; the orifice blocking plate 4 is detachably connected to the grouting conversion joint 5; a baffle 6 is slidably connected to the orifice blocking plate 4. When the orifice blocking plate 4 is installed on the grouting conversion joint 5, the baffle 6 abuts against the side wall of the grouting conversion joint 5;

[0046] It should be noted that, in specific implementation, a rubber sealing gasket can be fixedly connected to the bottom wall of the baffle 6. The rubber sealing gasket can, on the one hand, increase the friction between the baffle 6 and the side wall of the grouting conversion joint 5, thereby ensuring the connection stability of the grouting conversion joint 5 on the plugging plate 4. On the other hand, when the two groups of baffles 6 are against each other, the connection sealing between the two groups of baffles 6 can be improved.

[0047] When the plugging is completed, the diving bell 1 pulls the grouting conversion joint 5 out of the plugging plate 4, and the two sets of baffles 6 slide close to each other, and the joint installation hole on the plugging plate 4 is blocked by the two sets of baffles 6 after the baffles 6 are offset.

[0048] A material storage cavity 401 is formed on the orifice blocking plate 4, a sliding plug 7 is slidably connected to the material storage cavity 401, and an air supply cavity 403 is formed in the orifice blocking plate 4, and the material storage cavity 401 is connected to the air supply cavity 403;

[0049] Multiple groups of limiting airbags 405 are connected to the side wall of the hole blocking plate 4, and the multiple groups of limiting airbags 405 are evenly distributed on the hole blocking plate 4; the air supply cavity 403 is connected to the limiting airbags 405;

[0050] When the grouting hole becomes larger due to the injection pressure of the slurry, the slurry is squeezed into the storage chamber 401 and pushes the slide plug 7 to slide, and the gas in the storage chamber 401 is sent into the air supply chamber 403, and the limiting air bag 405 on the side wall of the plugging plate 4 is inflated and squeezed into the small depression on the inner wall of the grouting hole.

[0051] The baffle 6 is fixedly connected to a third spring 9 , and one end of the third spring 9 away from the baffle 6 is fixedly connected to the inner top wall of the second sliding cavity 402 .

[0052] Reference Figure 3-Figure 6 Before use, the staff manually puts the plugging plate 4 on the grouting conversion joint 5; and connects the grouting conversion joint 5 and the connecting seat 3;

[0053] It should be noted that when the orifice-blocking plate 4 is sleeved, the staff can use a tool to press down the baffle 6 to ensure that the grouting conversion joint 5 can pass through the joint installation hole on the orifice-blocking plate 4.

[0054] A first sliding cavity 8 is formed in the orifice blocking plate 4, and a limiting rod 801 is slidably connected in the first sliding cavity 8;

[0055] When the sliding plug 7 slides, the sliding plug 7 squeezes and pushes the limiting rod 801 to slide down along the first sliding cavity 8 . After the sliding plug 7 slides for a distance, the limiting rod 801 slides up and is clamped into the sliding plug 7 .

[0056] It should be noted that an underwater thruster is connected to the bottom of the diving bell 1 for pushing the diving bell 1 to move underwater. The underwater thruster can be a commercially available CubeMars underwater thruster.

[0057] It should also be noted that a plurality of cameras are connected around the top of the diving bell 1 for photographing the underwater grouting situation. The cameras can be wireless waterproof cameras available on the market.

[0058] It should be further explained that the storage tank 101 is fixedly connected to the diving bell 1, and a grouting pump 2 is fixedly connected to the top of the storage tank 101, the pumping end of the grouting pump 2 is connected to the storage tank 101, and the discharge end of the grouting pump 2 is connected to the feed pipe 201.

[0059] Reference Figure 3-Figure 6 When in use, the diving bell 1 is placed into the water using a ship-borne crane, and the propeller is used to push the diving bell 1 to move underwater. When the diving bell 1 drives the grouting conversion joint 5 to move near the drilled grouting hole, the staff inserts the grouting conversion joint 5 into the grouting hole according to the underwater image transmitted in real time by the camera. When the grouting conversion joint 5 is inserted into the grouting hole, the plugging plate 4 will be plugged into the grouting hole synchronously;

[0060] During grouting, as the slurry in the grouting hole gradually increases, the pressure in the grouting hole will increase. At this time, part of it will enter the storage chamber 401 under the action of pressure. The slurry entering the storage chamber 401 will push the slide plug 7 to slide. The sliding of the slide plug 7 will squeeze and push the gas in the storage chamber 401. The squeezed and pushed gas will enter the air supply chamber 403 through the connecting pipe 404, and finally be input into the limiting airbag 405 through the one-way air supply pipe 406. At this time, the limiting airbag 405 will be inflated and bulged. The inflated limiting airbag 405 will be stuffed into the small depression on the inner wall of the grouting hole. At this time, the friction between the plugging plate 4 and the inner wall of the grouting hole will be increased, thereby effectively preventing the plugging plate 4 from sliding and displacing during the grouting process, thereby ensuring the grouting stability of the grouting conversion joint 5.

[0061] Reference Figure 5 、 Figure 8 、 Figure 9 When the slide plug 7 slides in the storage cavity 401, the slide plug 7 will squeeze the limiting rod 801 and slide down in the first slide cavity 8. At this time, when the side wall of the slide plug 7 slides to just above the limiting rod 801, the limiting rod 801 slides out and clamps the slide plug 7, thereby ensuring the stability of the slide plug 7 in the storage cavity 401.

[0062] A second sliding cavity 402 is formed in the hole blocking plate 4, and the baffle 6 is slidably connected to the second sliding cavity 402. An elastic pull rope 601 is fixedly connected to the baffle 6, and the elastic pull rope 601 is fixedly connected to the limiting rod 801;

[0063] When the two groups of baffles 6 slide towards each other, the baffle 6 pulls the limit rod 801 through the elastic pull rope 601, and the limit rod 801 is pulled out from the slide plug 7. The slide plug 7 slides back to extrude the slurry in the storage chamber 401, and the extruded slurry fills the residual gap on the left side of the baffle 6.

[0064] Reference Figure 4 、 Figure 7 As shown, a sliding sealing ring 501 is connected to the side wall of the grouting conversion joint 5, and the sliding sealing ring 501 is tightly attached to the side wall of the joint mounting hole on the plugging plate 4 to ensure that the injected slurry will not leak from the connection between the grouting conversion joint 5 and the plugging plate 4 during the grouting process.

[0065] It should be noted that the feed pipe 201 and the grouting pipe 301 are both stainless steel pipes, and the feed pipe 201 and the grouting pipe 301 are connected.

[0066] A one-way air supply pipe 406 is fixedly connected to the bottom of the limiting airbag 405. One end of the one-way air supply pipe 406 away from the limiting airbag 405 is connected to the air supply cavity 403. The limiting airbag 405 is an elastic rubber wear-resistant airbag.

[0067] A connecting pipe 404 is fixedly connected to the orifice blocking plate 4 , one end of the connecting pipe 404 is connected to the air supply cavity 403 , and the other end of the connecting pipe 404 is connected to the material storage cavity 401 , and a one-way valve is connected to the connecting pipe 404 .

[0068] Reference Figure 7 In order to ensure that the sliding plug 7 can stably slide to the left and reset, the orifice plate 4 is also connected to an air supply pipe, and a one-way valve is connected to the air supply pipe and the connecting pipe 404.

[0069] Reference Figure 5 In a specific implementation, both the sliding plug 7 and the limiting rod 801 are provided with an arc-shaped relief surface 701 .

[0070] By setting the arc-shaped clearance surface 701 on the sliding plug 7 and the limiting rod 801, when the sliding plug 7 slides and squeezes the limiting rod 801, the limiting rod 801 can be stably squeezed to slide down, reducing the possibility of the limiting rod 801 pressing against and jamming the sliding plug 7, and ensuring that the limiting rod 801 can be stably stuck in the sliding plug 7 for limiting.

[0071] Reference Figure 5 A first spring 702 is fixedly connected to the sliding plug 7 , and one end of the first spring 702 away from the sliding plug 7 is fixedly connected to the inner wall of the storage cavity 401 .

[0072] When the elastic pull rope 601 pulls the limit rod 801 downward and releases the limit on the sliding plug 7, the sliding plug 7 can slide back to the left under the elastic action of the first spring 702. When the sliding plug 7 slides back, the sliding plug 7 will push out the slurry stored in the storage chamber 401, and the pushed out slurry will fill the left side of the baffle 6, and then fill the grouting gap that may exist on the left side of the baffle 6 due to the completion of grouting, thereby ensuring the integrity and fullness of the slurry in the grouting hole, and further ensuring the grouting effect.

[0073] Reference Figure 5 In a specific implementation, a second spring 802 is fixedly connected to the limiting rod 801 , and one end of the second spring 802 away from the limiting rod 801 is fixedly connected to the inner wall of the first sliding cavity 8 .

[0074] When the slide plug 7 slides to the right, the limit rod 801 moves downward under the pressure of the slide plug 7. At this time, the second spring 802 is compressed. After the slide plug 7 slides a certain distance, the second spring 802 will push the limit rod 801 to get into the slide plug 7 under the elastic action of the second spring 802, thereby limiting the slide plug 7. The second spring 802 set on the limit rod 801 can ensure the limiting effect of the limit rod 801 on the slide plug 7; when the limit rod 801 is pulled down again by the elastic pull rope 601, the limit of the limit rod 801 on the slide plug 7 is released, and the slide plug 7 can slide to the left and return to its original position.

[0075] Reference Figure 4 In a specific implementation, a limit ring 4011 is also fixedly connected to the storage chamber 401 to limit the reset sliding plug 7 to prevent the sliding plug 7 from sliding excessively and falling from the storage chamber 401.

[0076] Example 2: An underwater plugging process using an underwater leak plugging device, the steps are as follows:

[0077] Step 1: The staff manually puts the plugging plate 4 on the grouting conversion joint 5. During the process, it is necessary to use a tool to press the baffle 6 to ensure that the grouting conversion joint 5 passes through the joint installation hole of the plugging plate 4 smoothly; at this time, the baffle 6 is reset under the elastic action of the third spring 9, and the rubber sealing gasket on its bottom wall fits tightly with the side wall of the grouting conversion joint 5, ensuring the stability of the connection between the two through friction; at the same time, the sliding sealing ring 501 on the side wall of the grouting conversion joint 5 is tightly attached to the side wall of the joint installation hole of the plugging plate 4, forming a seal in advance;

[0078] Step 2: Fixedly connect the grouting adapter 5 to the connecting seat 3 to ensure the connectivity of the feed pipe 201, the grouting pipe 301 and the grouting adapter 5; check the raw material reserves in the storage tank 101 in the diving bell 1, the operating status of the grouting pump 2, and the working performance of the underwater thruster and camera to ensure that the equipment is normal;

[0079] Step 3: Use a lifting tool to place the diving bell 1 connected to the grouting adapter 5 into the water, and use an underwater thruster to push it to the pre-drilled grouting hole;

[0080] Step 4: When the grouting conversion joint 5 is inserted into the grouting hole, the orifice plugging plate 4 is simultaneously plugged into the grouting hole;

[0081] Step 5. The two groups of storage tanks 101 in the diving bell 1 respectively inject the resin raw material of component A and the curing agent of component B into the grouting conversion joint 5 through the feeding pipe 201 and mix them, and then inject them into the grouting hole for filling. At this time, as the slurry in the grouting hole increases, the pressure gradually increases, and part of the slurry is squeezed into the storage cavity 401 of the plugging plate 4, pushing the slide plug 7 to slide to the right against the elastic force of the first spring 702. The gas in the storage cavity 401 flows into the air delivery cavity 403 through the one-way valve of the connecting pipe 404, and then is filled into the limiting air bag 405 through the one-way air delivery pipe 406, causing it to swell and squeeze into the small depression on the inner wall of the grouting hole, greatly increasing the friction between the plugging plate 4 and the hole wall, and preventing the plugging plate 4 from sliding during the grouting process;

[0082] Step 6: After the grouting is completed, the diving bell 1 pulls the grouting conversion joint 5 out, and the two sets of baffles 6 on the plugging plate 4 slide out and abut against each other. The abutted baffles 6 block the joint installation hole on the plugging plate 4. At the same time, the baffles 6 slide to pull the limit rod 801, and the sliding plug 7 slides back to push out the liquid in the storage chamber 401, filling the residual gap on the side of the baffle 6 to ensure the integrity of the slurry in the grouting hole;

[0083] Step 7: After a period of time, the slurry in the grouting hole on the left side of the plugging plate 4 solidifies and completes the final plugging.

[0084] The resin raw materials of component A in step five include low-viscosity flexible asphalt W200, aromatic oil for environmentally friendly rubber, rosin polyester polyol JC-380, wanenate PM200, dibutyltin disilicate and additives.

[0085] The curing agent of component B in step five is TMR-2.

[0086] Example 3: Reference Figure 10 , an underwater leakage plugging device, which is basically the same as Example 1, furthermore, the two sets of baffles 6 are respectively fixedly connected with a first magnet 10 and a second magnet 11, the first magnet 10 and the second magnet 11 attract each other, and the side wall of the grouting conversion joint 5 is fixedly connected with a third magnet 12 and a fourth magnet 13, the first magnet 10 and the fourth magnet 13 attract each other, and the second magnet 11 and the third magnet 12 attract each other.

[0087] Reference Figure 10 In the specific implementation, the groups of magnets attract each other, thereby improving the installation stability of the grouting conversion joint 5 in the plugging plate 4, thereby preventing the grouting conversion joint 5 from being pushed and sliding by the slurry during grouting, thereby affecting the overall grouting sealing type.

[0088] Reference Figure 10 In a specific implementation, the third magnet 12 and the fourth magnet 13 can also be electromagnets available on the market.

[0089] When the grouting conversion joint 5 needs to be pulled out, the third magnet 12 and the fourth magnet 13 are powered off, and the grouting conversion joint 5 is no longer attracted by the first magnet 10 and the second magnet 11, and can be pulled out at this time. When the two sets of baffles 6 are attached to each other, the first magnet 10 and the second magnet 11 on the two sets of baffles 6 will attract each other, thereby further improving the stability of the two sets of baffles 6 after they are offset.

[0090] Example 4: Reference Figure 11 , an underwater leakage plugging device, which is basically the same as Example 1, and is better in that an air storage chamber is also provided in the plugging plate 4, and the air storage chamber is connected to the material storage chamber 401 through an air supply pipe, which is used to supply air to the material storage chamber 401 when the sliding plug 7 slides.

[0091] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An underwater leakage plugging device, comprising two sets of feed pipes (201) connected to a diving bell (1), characterized in that: Also includes: A connecting seat (3) fixedly connected to a grouting pipe (301), wherein the connecting seat (3) is connected to the two groups of the material delivery pipes (201); A grouting conversion joint (5) is fixedly connected to the grouting pipe (301) and communicates with the grouting pipe (301); A plugging plate (4) is detachably connected to the grouting conversion joint (5); a baffle (6) is slidably connected to the plugging plate (4); When the plugging is completed, the diving bell (1) pulls the grouting conversion joint (5) out of the plugging plate (4), and the two sets of baffles (6) slide close to each other, and the joint installation hole on the plugging plate (4) is blocked by the two sets of baffles (6) that are pushed against each other; A material storage cavity (401) is provided on the orifice blocking plate (4), a sliding plug (7) is slidably connected to the material storage cavity (401), an air supply cavity (403) is provided in the orifice blocking plate (4), and the material storage cavity (401) is communicated with the air supply cavity (403); A plurality of groups of position-limiting airbags (405) are connected to the side wall of the hole-blocking plate (4), and the plurality of groups of position-limiting airbags (405) are evenly distributed on the hole-blocking plate (4); the air supply cavity (403) is in communication with the position-limiting airbags (405); When the slurry fills the grouting hole on the left, the slurry is squeezed into the storage cavity (401) and pushes the sliding plug (7) to slide, and the gas in the storage cavity (401) is sent into the air supply cavity (403), and the limiting air bag (405) on the side wall of the plugging plate (4) is inflated and bulged against the inner wall of the grouting hole; A first sliding cavity (8) is provided in the hole blocking plate (4), and a limiting rod (801) is slidably connected in the first sliding cavity (8); When the sliding plug (7) slides, the sliding plug (7) squeezes and pushes the limiting rod (801) to slide down along the first sliding cavity (8); after the sliding plug (7) slides a certain distance, the limiting rod (801) slides up and is inserted into the sliding plug (7); A second sliding cavity (402) is provided in the hole blocking plate (4), the baffle (6) is slidably connected in the second sliding cavity (402), an elastic pull rope (601) is fixedly connected to the baffle (6), and the elastic pull rope (601) is fixedly connected to the limiting rod (801); When the two groups of baffles (6) slide toward each other, the baffles (6) pull the limiting rod (801) through the elastic pull rope (601), and the limiting rod (801) is pulled out of the sliding plug (7). The sliding plug (7) slides back to extrude the slurry in the storage chamber (401), and the extruded slurry fills the residual gap on the left side of the baffle (6).

2. The underwater leakage plugging device according to claim 1, characterized in that: The sliding plug (7) and the limiting rod (801) are both provided with an arc-shaped relief surface (701).

3. The underwater leakage plugging device according to claim 1, characterized in that: A second spring (802) is fixedly connected to the limiting rod (801), and one end of the second spring (802) away from the limiting rod (801) is fixedly connected to the inner wall of the first sliding cavity (8).

4. The underwater leakage plugging device according to claim 1, characterized in that: A one-way air supply pipe (406) is fixedly connected to the bottom of the limiting air bag (405), and one end of the one-way air supply pipe (406) away from the limiting air bag (405) is connected to the air supply cavity (403).

5. The underwater leakage plugging device according to claim 1, characterized in that: A connecting pipe (404) is fixedly connected to the orifice blocking plate (4), one end of the connecting pipe (404) is connected to the air supply cavity (403), and the other end of the connecting pipe (404) is connected to the material storage cavity (401), and a one-way valve is connected to the connecting pipe (404).

6. The underwater leakage plugging device according to claim 1, characterized in that: A first spring (702) is fixedly connected to the sliding plug (7), and one end of the first spring (702) away from the sliding plug (7) is fixedly connected to the inner wall of the storage cavity (401).

7. The underwater leakage plugging device according to claim 1, characterized in that: A third spring (9) is fixedly connected to the baffle (6), and one end of the third spring (9) away from the baffle (6) is fixedly connected to the inner top wall of the second sliding cavity (402).

8. An underwater plugging process, using the underwater leakage plugging device according to claim 7, characterized in that: Here are the steps: Step 1: Use a lifting tool to place the diving bell (1) connected to the grouting conversion joint (5) into water and move it to the pre-drilled grouting hole; Step 2: The diving bell (1) pushes the grouting conversion joint (5) into the grouting hole, and the plugging plate (4) blocks the grouting hole; Step 3: The two sets of storage tanks (101) in the diving bell (1) pump the two raw materials into the grouting conversion joint (5) through the feeding pipe (201) and mix them, and then inject them into the grouting hole for filling; Step 4: After the grouting is completed, the diving bell (1) pulls the grouting conversion joint (5) out, and the two groups of baffles (6) on the plugging plate (4) slide out and abut against each other. The abutted baffles (6) block the joint installation hole on the plugging plate (4). At the same time, the baffle (6) slides and pulls the limit rod (801), and the sliding plug (7) slides back to push out the liquid in the storage chamber (401) to fill the residual gap on the side of the baffle (6).

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