A hole water stop reinforcing device suitable for a tunneling pipeline

Abstract

The application relates to the technical field of hole water stop, and discloses a hole water stop reinforcing device suitable for a tunneling pipeline, which comprises a water stop sleeve pipe and a mounting plate fixed at the end of the water stop sleeve pipe, the inner wall of an inner guide pipe is sequentially provided with a sealing ring, an extrusion sealing block and an air bag sealing ring, the periphery of the extrusion sealing block and the bottom surface of the extrusion sealing block are surrounded by elastic wrapping layers, and the water-approaching surface of the water stop ring is rotationally connected with a plurality of annularly-distributed water pressure flaps; the negative influence of the friction force caused by high sealing performance on the pipeline guidance is reduced, the pipeline guidance movement is ensured to be smooth, under the condition of high water pressure in an abnormal state, kinetic energy is applied to the water pressure flaps through water pressure, the extrusion sealing block and the air bag sealing ring realize three-stage sealing, under the condition of three-stage sealing, the large friction force applied to the pipeline can avoid the water outlet problem caused by the pipeline mispulling, and meanwhile, the high sealing performance of the annular gap can ensure the water stop effect under the condition of high water pressure.

Description

Technical Field

[0001] This invention relates to the field of tunnel opening water sealing technology, specifically a tunnel opening water sealing and reinforcement device suitable for underground pipelines. Background Technology

[0002] The opening of underground pipelines is susceptible to collapse due to terrain conditions. Reinforcing the opening with a casing improves ease of use. As the pipeline extends into the tunnel through the casing, the casing also guides the pipeline. By installing a sealing structure between the casing and the pipeline, the water-stopping effect of the opening can be improved. Using a sealing ring to seal the annular gap, the better the annular gap seal between the pipeline and the casing, the greater the friction between them, making it difficult for the pipeline to move during guidance. Conversely, reducing the guiding sliding friction between the pipeline and the casing reduces the annular gap seal. When water flows out of the tunnel, the high water pressure can cause the annular gap seal to fail. Summary of the Invention

[0003] The purpose of this invention is to provide a water-stopping and reinforcement device for the opening of underground pipelines, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A water-stopping and reinforcement device for the opening of a tunneled pipeline includes a water-stopping sleeve and an mounting plate fixed to the end of the water-stopping sleeve. A water-stopping ring is fixedly connected to the end of the inner wall of the water-stopping sleeve away from the mounting plate, and an inner guide pipe for guiding the pipeline is fixedly connected to the inner wall of the water-stopping ring.

[0006] The inner wall of the inner guide tube is provided with a sealing ring, a compression sealing block and an airbag sealing ring in sequence. The sealing ring is located at the end of the inner wall of the inner guide tube away from the mounting plate. Several compression sealing blocks are distributed in a ring on the inner wall of the inner guide tube. Two adjacent compression sealing blocks form a labyrinth gap through the cooperation of protrusions. The periphery and bottom surface of the compression sealing block are surrounded by an elastic wrapping layer.

[0007] Several annularly distributed water pressure plates are rotatably connected to the water-facing surface of the water-stop ring. The number of water pressure plates corresponds to the number of the extrusion sealing blocks. A linkage control pipe is horizontally slidably connected to the water-stop ring. The water pressure plates rotate under water pressure, causing the linkage control pipe to move horizontally. This is used to cause the extrusion sealing blocks to contract inward to increase the extrusion force, and at the same time, to cause the airbag sealing ring to expand to increase the extrusion force, ultimately forming a triple seal.

[0008] As a further embodiment of the present invention: a control ring is rotatably connected to the outside of the water-stop ring, the surface of the control ring is provided with a spiral groove, a toothed block is fixedly connected to the top of the extrusion sealing block, the toothed block passes through the inner guide tube and meshes with the control ring, and the extrusion sealing block is slidably connected to the inner guide tube.

[0009] As a further embodiment of the present invention: a fixed cylinder is fixedly connected to the side of the water-stop ring near the control ring, and a rotating tube is rotatably connected to the end of the fixed cylinder. The linkage control tube passes through the water-stop ring and is slidably connected inside the fixed cylinder and the rotating tube. A spiral adjustment groove that cooperates with the rotating tube is opened on the outside of the linkage control tube. Two guide posts that cooperate with the spiral adjustment groove are fixedly connected to the inner wall of the rotating tube. These guide posts are used to drive the rotating tube to rotate through the horizontal movement of the linkage control tube. The rotating tube drives the outer gear ring outside the control ring to rotate through the transmission gear. The outer gear ring is fixedly connected to the control ring. Through the inward movement of the gear block, it drives the compression sealing block to clamp the pipe and increase the compression force.

[0010] As a further embodiment of the present invention: a movable rod is slidably connected to the side of the linkage control pipe near the water pressure valve plate, the movable rod and the linkage control pipe are elastically connected by a return spring, the water pressure valve plate is in contact with the movable rod, a tail sealing plate is slidably connected to the tail end of the linkage control pipe, the tail sealing plate is fixedly connected to the inner guide pipe through an L-tube, and the L-tube is connected to the airbag sealing ring.

[0011] As a further embodiment of the present invention: the water-stop ring and the water pressure valve are surrounded by a rubber sealing ring.

[0012] As a further aspect of the present invention: the three-stage sealing process includes:

[0013] Pipeline guidance

[0014] During this stage, the airbag sealing ring and the squeeze sealing block are in a static state. After the pipeline passes through the water-stop sleeve, it enters and guides the pipeline as it passes through the inner guide tube. At this time, the sealing ring fits the pipeline. Due to the reduced sealing effect, the friction of the sealing ring is small, which reduces the impact on the pipeline's passage and allows the pipeline to enter the hole smoothly. In the event of water seepage, the sealing ring can prevent water from flowing out through the annular gap between the inner guide tube and the pipeline.

[0015] Secondary seal after water pressure change

[0016] When water surges into the tunnel, it quickly reaches the space between the water-stop ring and the water-stop sleeve. The water pressure then pushes the water pressure flap upwards, causing it to rotate. The rubber sealing ring deforms as the flap rotates, and the piston rod and linkage control pipe slide to one side due to the water pressure flap. As the linkage control pipe slides through the fixed cylinder, the guide post inside the rotating pipe is affected by the spiral adjustment groove on the outer wall of the linkage control pipe, causing the rotating pipe to rotate. The rotating pipe then drives the outer gear ring to rotate through the transmission gear. As the outer gear ring rotates with the control ring, the toothed block is pushed by the outer gear ring to push the compression sealing block downwards. This increases the pressure of the compression sealing block on the pipe, causing the elastic wrapping layer to fit tightly against the pipe, thus increasing the sealing effect of the second seal and resisting high water pressure.

[0017] As the diameter of the annular seal formed by the squeezing sealing block moves towards the center of the inner guide tube, the diameter of the squeezing sealing block itself cannot be changed. However, since the elastic wrapping layer also surrounds the sides of the squeezing sealing block, the gap between two adjacent squeezing sealing blocks decreases when the squeezing sealing block contracts inward. The elastic wrapping layer located between the two gaps is squeezed again. At the same time, in conjunction with the labyrinthine gaps, the sealing effect between two adjacent squeezing sealing blocks is increased. Meanwhile, as the elastic wrapping layer moves towards the center of the inner guide tube with the squeezing sealing block, the pressure on the pipe also increases, thereby improving the sealing performance.

[0018] Three-stage seal after water pressure change

[0019] At this point, the linkage control tube and the tail sealing plate undergo relative displacement, reducing the internal space of the linkage control tube. The tail sealing plate acts as a piston, allowing gas to enter the airbag sealing ring and causing it to initially expand. During this stage, the airbag sealing ring, in conjunction with the compression sealing block, performs an initial seal on the end. However, as the water pressure continues to increase, when the compression sealing block reaches its limit, the water pressure flap pushes the piston rod to undergo relative displacement with the linkage control tube. At this point, the return spring undergoes elastic deformation, causing the piston rod to further compress the gas inside the linkage control tube through the end piston, further expanding the airbag sealing ring and further improving the seal between the end airbag sealing ring and the pipeline. When the water pressure disappears, the pipeline is once again in a one-way sealing ring state, allowing the pipeline to be easily removed.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] By employing a dynamic sealing method, the negative impact of friction due to high sealing performance on pipeline guidance is reduced during the pipeline guiding process. Under normal conditions, it ensures smooth pipeline guiding movement. Under abnormal conditions of high water pressure, the water pressure applies kinetic energy to the water pressure valve, enabling the rear-end compression sealing block and airbag sealing ring to achieve a three-stage seal. Under the three-stage seal, the high friction applied to the pipeline can prevent water leakage caused by accidental pipeline pull-out, while ensuring the high sealing performance of the annular gap under high water pressure to guarantee the water-stopping effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram illustrating the use of a water-stopping and reinforcement device for underground pipelines.

[0024] Figure 2 for Figure 1 Enlarged diagram of section A in the middle;

[0025] Figure 3 This is a rear view schematic diagram of a waterproofing and reinforcement device for underground pipelines.

[0026] Figure 4 A three-dimensional schematic diagram of a water-stopping and reinforcement device for underground pipelines;

[0027] Figure 5 This is a three-dimensional schematic diagram from another perspective of a water-stopping and reinforcement device for underground pipelines.

[0028] In the diagram: 1. Water-stop sleeve; 11. Mounting plate; 2. Water-stop ring; 21. Inner guide tube; 22. Sealing ring; 23. Extrusion sealing block; 231. Tooth block; 232. Elastic wrapping layer; 24. Airbag sealing ring; 25. Control ring; 251. Outer toothed ring; 3. Linkage control tube; 31. Live rod; 32. Tail sealing plate; 321. L-tube; 33. Return spring; 34. Spiral adjustment groove; 4. Water pressure live plate; 5. Rubber sealing ring; 6. Fixed cylinder; 61. Rotating tube; 611. Transmission gear. Detailed Implementation

[0029] Please see Figures 1-5 Composition of the present invention

[0030] It includes a water-stop sleeve 1 and a mounting plate 11 fixed to the end of the water-stop sleeve 1. A water-stop ring 2 is fixedly connected to the end of the inner wall of the water-stop sleeve 1 away from the mounting plate 11. An inner guide tube 21 for guiding the pipeline is fixedly connected to the inner wall of the water-stop ring 2.

[0031] The water-stop sleeve 1 is fixed at the opening by the mounting plate 11. The water-stop sleeve 1 and the mounting plate 11 are welded together to prevent water seepage from the structural gaps. The water-stop sleeve 1 is fitted to the wall of the opening, and flexible water-stopping material is filled between the mounting plate 11 and the opening. The water-stop ring 2 is fixed inside the water-stop sleeve 1 at the end away from the mounting plate 11. One end of the water-stop ring 2 is designed to be narrowed, so that the periphery of the water-stop ring 2 forms an inclined slope. At this time, the water-stop sleeve 1 is fixed with an inner guide tube 21 through the water-stop ring 2, so that the axis of the inner guide tube 21 is collinear with the axis of the water-stop sleeve 1. The pipe is guided by the inner guide tube 21.

[0032] The inner wall of the inner guide tube 21 is sequentially provided with a sealing ring 22, a compression sealing block 23, and an airbag sealing ring 24. The sealing ring 22 is located at the end of the inner wall of the inner guide tube 21 away from the mounting plate 11. Several compression sealing blocks 23 are distributed in a ring on the inner wall of the inner guide tube 21. Two adjacent compression sealing blocks 23 form a labyrinthine gap through the cooperation of protrusions. The periphery and bottom surface of the compression sealing blocks 23 are surrounded by an elastic wrapping layer 232. Because the inner wall of the inner guide tube 21 is sequentially provided with a sealing ring 22, a compression sealing block 23, and an airbag sealing ring 24, the sealing ring 22 is located at the end of the inner wall of the inner guide tube 21 away from the mounting plate 11. The sealing ring 24, wherein the sealing ring 22 is located at the front end of the water-stop sleeve 1. The front end of the water-stop sleeve 1 is the water-facing end. At this time, the sealing is first achieved by the sealing ring 22. The sealing efficiency of the sealing ring 22 is relatively low. It mainly satisfies the initial sealing of the annular gap between the inner guide tube 21 and the pipeline. Under normal conditions, the sealing ring 22 can satisfy the sealing function of the annular gap between the inner guide tube 21 and the pipeline. Therefore, due to the low sealing efficiency, the friction of the sealing ring 22 on the pipeline is reduced compared to the high sealing state, so it has little impact on the guiding and feeding of the pipeline.

[0033] Several annularly distributed water pressure flaps 4 are rotatably connected to the water-facing surface of the water-stop ring 2. The number of water pressure flaps 4 corresponds to the number of compression sealing blocks 23. A linkage control pipe 3 is horizontally slidably connected to the water-stop ring 2. The water pressure flaps 4 rotate under water pressure, causing the linkage control pipe 3 to move horizontally. This is used to drive the compression sealing blocks 23 to contract inward to increase the compression force, and at the same time, to drive the airbag sealing ring 24 to expand to increase the compression force, ultimately forming a triple seal. A control ring 25 is rotatably connected to the outside of the water-stop ring 2. The surface of the control ring 25 has a spiral groove. A toothed block 231 is fixedly connected to the top of the compression sealing block 23. The toothed block 231 passes through the inner guide tube 21 and meshes with the control ring 25. The compression sealing block 23 is slidably connected to the inner guide tube 21. A fixed cylinder 6 is fixedly connected to the side of the water-stop ring 2 near the control ring 25. A rotating tube 61 is rotatably connected to the end of the fixed cylinder 6. The linkage control pipe 3 passes through the water-stop ring 2 and is slidably connected to the fixed cylinder 6. Inside the cylinder 6 and the rotating tube 61, the outside of the linkage control tube 3 is provided with a spiral adjustment groove 34 that cooperates with the rotating tube 61. Two guide posts that cooperate with the spiral adjustment groove 34 are fixedly connected to the inner wall of the rotating tube 61. They are used to drive the rotating tube 61 to rotate through the horizontal movement of the linkage control tube 3. The rotating tube 61 drives the outer gear ring 251 outside the control ring 25 to rotate through the transmission gear 611. The outer gear ring 251 is fixedly connected to the control ring 25. Through the tooth block 231, it moves inward and drives the compression sealing block 23 to clamp the pipe and increase the compression force. A movable rod 31 is slidably connected to the side of the linkage control tube 3 near the water pressure valve 4. The movable rod 31 is elastically connected to the linkage control tube 3 through the return spring 33. The water pressure valve 4 is in contact with the movable rod 31. A tail sealing plate 32 is slidably connected to the tail end of the linkage control tube 3. The tail sealing plate 32 is fixedly connected to the inner guide tube 21 through the L tube 321. The L tube 321 is connected to the airbag sealing ring 24.When the water pressure increases, it is first applied to the inner guide pipe 21 and the water pressure flap 4. The water pressure flap 4 rotates towards the water-stop ring 2 due to the water pressure. This rotation pushes the linkage control pipe 3 to move horizontally. The linkage control pipe 3 then moves first. Because the linkage control pipe 3 has a spiral adjustment groove 34, and as it passes through the fixed cylinder 6 and the rotating pipe 61, the rotating pipe 61 is affected by the sliding linkage control pipe 3. This causes the rotating pipe 61 to rotate as it slides along the spiral adjustment groove 34. The rotating pipe 61 then drives the outer gear ring 251 to rotate via the transmission gear 611. When the control ring 25 rotates, the gear block 231 is affected by the spiral adjustment groove 34 on the control ring 25. The swirling groove causes the compression sealing block 23 to contract inward, increasing the pressure exerted by the compression sealing block 23 on the pipeline. Simultaneously, the linkage control pipe 3 and the tail sealing plate 32 undergo relative displacement, causing some of the air inside the linkage control pipe 3 to expand through the L-pipe 321, further increasing the sealing performance. This increases friction and improves the sealing effect. Since the contraction of the toothed block 231 driven by the control ring 25 has movement limitations, when the water pressure continues to increase, the water pressure flap 4 pushes the piston rod 31 to move. As the pressure of the compression sealing block 23 on the pipeline reaches its limit, the return spring 33 undergoes elastic deformation. At this point, the piston rod 31 again forces the air inside the linkage control pipe 3 into the interior of the piston rod 24, causing the piston rod 24 to expand further. This increases the adhesion pressure between the piston rod 24 and the pipeline, thus achieving a triple seal.

[0034] The water-stop ring 2 and the water pressure valve 4 are surrounded by a rubber sealing ring 5. Due to the setting of the linkage control pipe 3, there is a sliding gap between the linkage control pipe 3 and the water-stop ring 2. In order to avoid water leakage from the gap, the rubber sealing ring 5 is used to completely seal the water pressure valve 4 and the water-stop ring 2, thereby ensuring the sealing performance.

[0035] Please see Figures 1-5 The usage process of this invention

[0036] Pipeline guidance

[0037] During this stage, the airbag sealing ring 24 and the compression sealing block 23 are in a static state. After the pipeline passes through the water-stop sleeve 1, it enters and guides the pipeline as it passes through the inner guide tube 21. At this time, the sealing ring 22 fits with the pipeline. Due to the reduced sealing effect, the friction of the sealing ring 22 is small, which reduces the impact on the pipeline's passage and allows the pipeline to enter the hole smoothly. In the case of water seepage, the sealing ring 22 can prevent water from flowing out through the annular gap between the inner guide tube 21 and the pipeline.

[0038] Secondary seal after water pressure change

[0039] Once water surges into the tunnel, it quickly reaches the space between the water-stop ring 2 and the water-stop sleeve 1. At this time, the water pressure pushes the water pressure flap 4 upward, causing it to rotate. The rubber sealing ring 5 deforms as the water pressure flap 4 rotates. The lever 31 and the linkage control pipe 3 are first affected by the water pressure flap 4 and slide to one side. When the linkage control pipe 3 slides through the fixed cylinder 6, the guide post inside the rotating pipe 61 is affected by the spiral adjustment groove 34 on the outer wall of the linkage control pipe 3, causing the rotating pipe 61 to rotate. The rotating pipe 61 then drives the outer gear ring 251 to rotate through the transmission gear 611. When the outer gear ring 251 rotates with the control ring 25, the tooth block 231 is affected by the outer gear ring 251 and pushes the squeeze sealing block 23 downward. At this time, the pressure of the squeeze sealing block 23 on the pipe increases, and the elastic wrapping layer 232 fits tightly with the pipe, increasing the sealing effect of the second seal and resisting high water pressure.

[0040] As the diameter of the annular seal formed by the compression sealing block 23 moving towards the center of the inner guide tube 21 decreases, and the diameter of the compression sealing block 23 itself cannot be changed, the elastic wrapping layer 232 also surrounds the sides of the compression sealing block 23. Therefore, when the compression sealing block 23 contracts inward, the gap distance between two adjacent compression sealing blocks 23 decreases, and the elastic wrapping layer 232 located between the two gaps is compressed again. At the same time, in conjunction with the labyrinthine gaps, the sealing effect between two adjacent compression sealing blocks 23 is increased. Meanwhile, as the compression sealing block 23 moves towards the center of the inner guide tube 21, the pressure on the pipe also increases, thereby improving the sealing performance.

[0041] Three-stage seal after water pressure change

[0042] At this time, the linkage control pipe 3 and the tail sealing plate 32 undergo relative displacement, and the space inside the linkage control pipe 3 becomes smaller. The tail sealing plate 32 acts as a piston, and gas enters the airbag sealing ring 24, causing the airbag sealing ring 24 to initially expand. At this stage, the airbag sealing ring 24 cooperates with the compression sealing block 23 to perform the initial sealing at the end. However, as the water pressure continues to increase, when the compression sealing block 23 is displaced to its limit, the water pressure flap 4 pushes the piston rod 31 to undergo relative displacement with the linkage control pipe 3. At this time, the return spring 33 undergoes elastic deformation, causing the piston rod 31 to further compress the gas inside the linkage control pipe 3 through the end piston, causing the airbag sealing ring 24 to expand further, further improving the sealing performance between the end airbag sealing ring 24 and the pipeline. When the water pressure disappears, the pipeline is once again in the one-way state of the sealing ring 22, allowing the pipeline to be easily removed.

[0043] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A water-stopping and reinforcement device for the opening of a tunneled pipeline, comprising a water-stopping sleeve (1) and a mounting plate (11) fixed to the end of the water-stopping sleeve (1), characterized in that: A water-stop ring (2) is fixedly connected to one end of the inner wall of the water-stop sleeve (1) away from the mounting plate (11), and an inner guide pipe (21) for guiding the pipeline is fixedly connected to the inner wall of the water-stop ring (2). The inner wall of the inner guide tube (21) is provided with a sealing ring (22), a compression sealing block (23) and an airbag sealing ring (24) in sequence. The sealing ring (22) is located at the end of the inner wall of the inner guide tube (21) away from the mounting plate (11). Several compression sealing blocks (23) are distributed in a ring on the inner wall of the inner guide tube (21). Two adjacent compression sealing blocks (23) form a labyrinth gap through the cooperation of protrusions. The periphery of the compression sealing block (23) and the bottom surface of the compression sealing block (23) are surrounded by an elastic wrapping layer (232). Several annularly distributed water pressure plates (4) are rotatably connected to the water-facing surface of the water-stop ring (2). The number of water pressure plates (4) corresponds to the number of the extrusion sealing blocks (23). A linkage control pipe (3) is horizontally slidably connected to the water-stop ring (2). The water pressure plates (4) cause the linkage control pipe (3) to move horizontally by water pressure flipping. This is used to drive the extrusion sealing blocks (23) to contract inward to increase the extrusion pressure through the linkage control pipe (3), and at the same time drive the airbag sealing ring (24) to expand to increase the extrusion pressure, thus forming a triple seal. The water-stop ring (2) is rotatably connected to a control ring (25). The surface of the control ring (25) is provided with a spiral groove. The top of the extrusion sealing block (23) is fixedly connected to a toothed block (231). The toothed block (231) passes through the inner guide tube (21) and meshes with the control ring (25). The extrusion sealing block (23) is slidably connected to the inner guide tube (21).

2. The water-stopping and reinforcement device for the opening of a tunneled pipeline as described in claim 1, characterized in that: The water-stop ring (2) is fixedly connected to a fixed cylinder (6) on the side near the control ring (25). The end of the fixed cylinder (6) is rotatably connected to a rotating tube (61). The linkage control tube (3) passes through the water-stop ring (2) and is slidably connected to the inside of the fixed cylinder (6) and the rotating tube (61). The outside of the linkage control tube (3) is provided with a spiral adjustment groove (34) that cooperates with the rotating tube (61). The inner wall of the rotating tube (61) is fixedly connected to two guide posts that cooperate with the spiral adjustment groove (34). These guide posts are used to drive the rotating tube (61) to rotate through the horizontal movement of the linkage control tube (3). The rotating tube (61) drives the outer gear ring (251) outside the control ring (25) to rotate through the transmission gear (611). The outer gear ring (251) is fixedly connected to the control ring (25). Through the inward movement of the tooth block (231), it drives the compression sealing block (23) to clamp the pipe and increase the compression force.

3. The water-stopping and reinforcement device for the opening of a tunneled pipeline as described in claim 1, characterized in that: The linkage control pipe (3) is slidably connected to a movable rod (31) on the side near the water pressure valve (4). The movable rod (31) and the linkage control pipe (3) are elastically connected by a return spring (33). The water pressure valve (4) is in contact with the movable rod (31). The tail end of the linkage control pipe (3) is slidably connected to a tail sealing plate (32). The tail sealing plate (32) is fixedly connected to the inner guide pipe (21) through an L-tube (321). The L-tube (321) is connected to the airbag sealing ring (24).

4. The water-stopping and reinforcement device for the opening of a tunneled pipeline as described in claim 1, characterized in that: The water-stop ring (2) and the water pressure valve (4) are surrounded by a rubber sealing ring (5).

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