A hydraulic tunnel inlet blocking device

Abstract

A hydraulic tunnel inlet plugging device belongs to the field of hydraulic engineering technology. In order to solve the problem that the plugging force of the plugging device remains unchanged, the plugging device has the risk of losing its plugging and falling out of the tunnel when the water pressure increases, and the plugging device is unstable when the water pressure changes, which can easily lead to water seepage. At the same time, when the tunnel is temporarily and urgently plugged, the existing plugging device cannot switch its shape for temporary use, which can easily lead to the problem that the tunnel cannot be plugged in time. The invention includes a first base plate and a second base plate, a retaining ring is fixedly connected to the outer wall of the first base plate, and a plurality of reinforcing components are slidingly provided on the inner ring side wall of the retaining ring. The present invention adjusts the degree of contact between the plugging device and the inner wall of the hydraulic tunnel by providing a reinforcing component, prevents leakage when the water pressure increases by providing a pressure component, and adjusts the adjustment skeleton radially and axially by providing a first adjustment component and a second adjustment component, so that the plugging device can be transformed between a bottle stopper structure and a columnar structure with a uniform cross-section.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy projects, and in particular to a hydraulic tunnel inlet blocking device. Background Art

[0002] Hydraulic tunnels are water passages excavated in mountains or underground, used for irrigation, power generation, water supply, drainage, water transfer, construction diversion, and navigation. In water conservancy and hydropower project construction, hydraulic tunnels that are about to be abandoned or rebuilt are generally sealed with sealing devices. These devices, along with the surrounding rock or concrete, share the water pressure.

[0003] For example, patent publication number CN114808852B describes a tunnel inlet plugging device for maintenance. The device comprises a hollow wedge-shaped plugging body with a gradually decreasing circular cross-section from the tail to the head. After maintenance is complete, the plugging device is pulled out using a traction rope. This invention provides a dry-land construction site for the maintenance and reinforcement of the cecum section of the tunnel within the reservoir area and the first gate. Furthermore, the plugging body is used to plug the tunnel inlet, ensuring safety, reliability, ease of construction, reusability, and economic benefits while minimizing impact on the reservoir.

[0004] Another example is patent publication number CN116289818A: A Tunnel Sealing Device with Valve Adjustment and Its Use Method. The device includes an annular sealing airbag with multiple protrusions on the outer surface of an airbag inflation tube. The interior of the annular sealing airbag is equipped with auxiliary water blocking mechanisms and support mechanisms from the water inlet to the water outlet, respectively, to ensure that the tunnel remains open while being sealed. The sealing mechanism of this invention consists of a corrugated, variable-diameter elastic airbag, a sealing end cap, a steel wire sealing ring, and an annular spring tensioning ring. This effectively reduces the shear force of the annular sealing airbag, improving its thickness and overall sealing quality.

[0005] However, the current hydraulic tunnel inlet sealing device still has some shortcomings during use, such as: during the use of the sealing device, the water pressure in the tunnel often changes, and the sealing force of the sealing device is usually unchanged. When the water pressure increases, the sealing device is at risk of failing to seal and detaching from the tunnel; and when the water pressure changes, the sealing of the sealing device is unstable, which can easily lead to water seepage problems; for hydraulic tunnels with medium and high water heads, the sealing device generally uses a bottle-type sealing body with a high overload capacity, while for tunnels with low water heads, a cylindrical sealing body with a uniform cross-section is generally selected. When performing temporary emergency sealing of the tunnel, the existing sealing device cannot switch its shape for temporary use, which can easily lead to the tunnel not being able to be sealed in time.

[0006] In view of the above problems, a hydraulic tunnel inlet blocking device is proposed. Summary of the Invention

[0007] The purpose of the present invention is to provide a hydraulic tunnel inlet sealing device. By adopting this device, the problem that the sealing force of the sealing device in the above background is usually constant, and when the water pressure increases, the sealing device is at risk of failing to seal and detaching from the tunnel, and when the water pressure changes, the sealing of the sealing device is unstable and easily leads to water seepage, and at the same time, when the tunnel is temporarily and urgently sealed, the existing sealing device cannot be switched in shape for temporary use, which easily leads to the problem that the tunnel cannot be sealed in time.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A hydraulic tunnel entrance plugging device comprises a first base plate and a second base plate, the first base plate is a truncated cone structure, and the first base plate and the second base plate are fixedly connected by a plurality of connecting rods, an end cover is installed at one end of the first base plate, a retaining ring is fixedly connected to the outer wall of the first base plate, a plurality of reinforcement components are slidingly arranged on the inner ring side wall of the retaining ring, a pressure component is fixedly installed on the outer ring side wall of the retaining ring, a first adjustment component is rotatably connected between the side walls of the first and second base plates, a second adjustment component is installed on the inner ring side wall of the retaining ring, one end of the second adjustment component is fixedly connected to a plurality of adjustment skeletons, the plurality of adjustment skeletons are arranged in a circular array, and an end of each of the adjustment skeletons away from the second adjustment component is rotatably connected to the movable end side wall of the first adjustment component, and a first airbag is fixedly connected to the outer ring side walls of the plurality of adjustment skeletons.

[0009] Furthermore, a circular groove is formed at one end of the first substrate, and a mounting hole is formed at the center of the inner wall of the circular groove.

[0010] Furthermore, a first annular groove is provided on the inner ring side wall of the retaining ring, a second annular groove is provided on the outer ring side wall of the retaining ring, and a partition is fixedly connected to the inner cavity side wall of the second annular groove.

[0011] Furthermore, each of the reinforcement components includes a sliding rod that is slidably connected to the side wall of the inner cavity of the first annular groove, one end of each sliding rod extends into the interior of the second annular groove, and each end of the sliding rod located inside the second annular groove is fixedly connected to a reinforcement plate, and the side wall of the reinforcement plate is provided with anti-slip grooves, and each end of the sliding rod located inside the first annular groove is fixedly connected to a support plate, and the side wall of each support plate is elastically connected to the side wall of the inner cavity of the first annular groove by a spring, and the sliding rod at the corresponding position passes through the inner ring of the spring.

[0012] Furthermore, the pressure assembly includes a second airbag fixedly connected to the side wall of the inner cavity of the second annular groove, a plurality of plungers fixedly connected to the outer wall of one side of the second airbag, one end of the plunger is connected to the interior of the second airbag, the movable end of the plunger passes through the side wall of one end of the retaining ring and is fixedly connected to the pressure plate, the outer wall of the other side of the second airbag is fixedly connected to a connecting tube, the connecting tube passes through the side wall of the other end of the retaining ring and is connected to the interior of the first airbag.

[0013] Furthermore, the first adjustment component includes an adjustment handle arranged inside the circular groove, the rotating shaft of the adjustment handle is rotatably connected inside the mounting hole, one end of the rotating shaft of the adjustment handle is fixedly connected to a threaded rod, the end of the threaded rod away from the adjustment handle is rotatably connected to the side wall of the second substrate, an axial adjustment disk is threadedly connected on the outer wall of the threaded rod, a plurality of connecting rods are arranged through the axial adjustment disk, and a plurality of linkage rods are fixedly connected to the side wall of the rotating shaft of the adjustment handle.

[0014] Furthermore, a plurality of embedded grooves are provided on the side wall of the axial adjustment disk at positions corresponding to the plurality of adjustment skeletons, a groove is provided on the inner cavity side wall of each embedded groove, a movable rod is slidably connected inside each groove, one end of each movable rod is fixedly connected to a first connecting seat, and one end of each adjustment skeleton is rotatably connected to the side wall of the corresponding first connecting seat.

[0015] Furthermore, the second adjustment component includes a radial adjustment disk rotatably connected to the inner ring side wall of the retaining ring, the radial adjustment disk is an annular structure, one end of multiple linkage rods is fixedly connected to the inner ring side wall of the radial adjustment disk, and multiple arc holes are opened on the side wall of the radial adjustment disk, and the multiple arc holes are arranged in a circular array.

[0016] Furthermore, the second adjustment component also includes a plurality of guide blocks fixedly connected to the side wall of the inner ring of the retaining ring. The plurality of guide blocks are arranged in a circular array. A guide hole is opened on the side wall of each guide block. The arc holes and the guide holes are arranged in a one-to-one correspondence. A push rod is slidingly provided inside the arc holes and the guide holes at the same position.

[0017] Furthermore, each of the adjustment skeletons includes a second connecting seat fixedly connected to one end of the support rod, each of the second connecting seats is rotatably connected to a first rotating rod, each of the first rotating rods is rotatably connected to an end away from the second connecting seat by a second rotating rod, and one end of each of the second rotating rods is rotatably connected to the side wall of the corresponding first connecting seat.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] By setting up a reinforcement component, when the pressure inside the hydraulic tunnel changes, the pressure on the push plate changes accordingly, and the degree of compression of the spring is different, so that the distance that the slide rod drives the reinforcement plate to push out is different, and the degree of contact between the sealing device and the inner wall of the hydraulic tunnel can be adaptively adjusted to avoid the sealing device from failing to seal and detaching from the tunnel; by setting up a pressure component, the sealing degree between the first airbag and the second airbag and the inner wall of the hydraulic tunnel is enhanced when the water pressure increases, preventing leakage; by setting up a first adjustment component and a second adjustment component, the adjustment skeleton is adjusted radially and axially, so that the sealing device can be transformed between a bottle stopper structure and a columnar structure with equal cross-section. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention after removing the first airbag;

[0022] Figure 3 Schematic diagram of the cross-sectional structure of the first substrate and the retaining ring portion of the present invention;

[0023] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure of part A;

[0024] Figure 5 It is a structural schematic diagram of the reinforcement component part of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the pressure component part of the present invention;

[0026] Figure 7 This is a schematic structural diagram of one viewing angle of the first adjustment component in the present invention;

[0027] Figure 8 This is a structural diagram of the first adjustment component in the present invention from another perspective;

[0028] Figure 9 Schematic diagram of the structure of the second regulating component in the present invention;

[0029] Figure 10 Schematic diagram of the structure of the regulating skeleton part of the present invention;

[0030] Figure 11 It is a schematic cross-sectional view of the axial adjustment disk portion of the present invention.

[0031] In the figure: 1, first base plate; 11, circular groove; 12, mounting hole; 2, second base plate; 3, connecting rod; 4, end cap; 5, retaining ring; 51, first annular groove; 52, second annular groove; 53, partition; 6, reinforcement assembly; 61, slide rod; 62, reinforcement plate; 621, anti-slip groove; 63, stop plate; 64, spring; 7, pressure assembly; 71, second airbag; 72, plunger; 73, pressure plate; 74, connecting pipe; 8, first adjustment assembly; 8 1. Adjustment handle; 82. Threaded rod; 83. Axial adjustment disk; 831. Embedded groove; 832. Groove; 833. Movable rod; 834. First connecting seat; 84. Linkage rod; 9. Second adjustment assembly; 91. Radial adjustment disk; 911. Arc-shaped hole; 92. Guide block; 921. Guide hole; 93. Push rod; 10. Adjustment frame; 101. Second connecting seat; 102. First rotating rod; 103. Second rotating rod; 20. First airbag. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In order to solve the technical problem that the water pressure of the tunnel often changes during the use of the plugging device, while the plugging force of the plugging device is usually constant, when the water pressure increases, the plugging device may fail to seal and fall out of the tunnel. Figure 1 - Figure 5 As shown, the following preferred technical solutions are provided:

[0034] A hydraulic tunnel inlet plugging device comprises a first base plate 1 and a second base plate 2. The first base plate 1 is a truncated cone structure, and the first base plate 1 and the second base plate 2 are fixedly connected by a plurality of connecting rods 3. An end cap 4 is installed at one end of the first base plate 1. A retaining ring 5 is fixedly connected to the outer wall of the first base plate 1. When the hydraulic tunnel is sealed, the outer wall of the retaining ring 5 is tightly against the inner wall of the hydraulic tunnel. A plurality of reinforcing components 6 are slidingly provided on the inner ring side wall of the retaining ring 5. The reinforcing component 6 is used to adaptively adjust the degree of tightness between the sealing device and the inner wall of the hydraulic tunnel when the water pressure at the hydraulic tunnel inlet changes. When the water pressure increases, it plays a role in reinforcing the sealing device to prevent it from moving, resulting in sealing failure and detachment from the tunnel. A pressure component 7 is fixedly installed on the outer ring side wall of the retaining ring 5. The pressure component 7 is used to prevent leakage when the water pressure increases. A first adjustment component 8 is rotatably connected between the side walls of the substrate 1 and the second substrate 2, and a second adjustment component 9 is installed on the inner ring side wall of the retaining ring 5. One end of the second adjustment component 9 is fixedly connected to a plurality of adjustment skeletons 10, and the plurality of adjustment skeletons 10 are arranged in a circular array. The end of each adjustment skeleton 10 away from the second adjustment component 9 is rotatably connected to the side wall of the movable end of the first adjustment component 8. The first adjustment component 8 is used to drive the adjustment skeleton 10 to switch its shape along the axial direction, and the second adjustment component 9 is used to drive the adjustment skeleton 10 to switch its shape along the radial direction. A first airbag 20 is fixedly connected to the outer ring side wall of the plurality of adjustment skeletons 10. The first airbag 20 is pre-pressurized by filling with gas, which can play a certain buffering role on the confining pressure of the hydraulic tunnel, and the first airbag 20 can change with the shape of the adjustment skeleton 10.

[0035] When the sealing device is in use, the end where the first substrate 1 and the retaining ring 5 are located is subjected to water pressure. Under the curved surface guiding action of the truncated cone-shaped first substrate 1, the change of the water pressure at the inlet of the blocked hydraulic tunnel will cause the radial pressure on the reinforcement component 6 to change, so that the degree of tightness between the sealing device and the inner wall of the hydraulic tunnel can be adaptively adjusted. At the same time, the change of the water pressure at the inlet of the hydraulic tunnel will cause the axial pressure on one end of the pressure component 7 to change, so that when the water pressure becomes larger, the sealing effect between the other end of the pressure component 7 and the first airbag 20 part and the inner wall of the hydraulic tunnel can be enhanced to achieve the purpose of preventing leakage.

[0036] For hydraulic tunnels with medium and high heads, the sealing device generally chooses a bottle-stopper-type sealing body with a higher overload capacity, while for tunnels with low heads, a uniform cross-section columnar sealing body is generally selected. When performing temporary emergency sealing on the tunnel, the first adjusting component 8 drives the adjusting skeleton 10 to switch its shape along the axial direction, and the second adjusting component 9 drives the adjusting skeleton 10 to switch its shape along the radial direction, so that the sealing device can be transformed between the bottle-stopper-type structure and the uniform cross-section columnar structure, so that the hydraulic tunnel can be temporarily sealed in time in an emergency.

[0037] A first annular groove 51 is provided on the inner ring side wall of the retaining ring 5, and a second annular groove 52 is provided on the outer ring side wall of the retaining ring 5, wherein the opening width of the first annular groove 51 is smaller than the opening width of the second annular groove 52, and sufficient space is reserved on the inner ring side wall of the retaining ring 5 for installing the second adjustment component 9, and a partition 53 is fixedly connected to the inner cavity side wall of the second annular groove 52, and the second annular groove 52 is divided into two parts by the partition 53. One end of the reinforcement component 6 extends to the inside of the second annular groove 52 and is located on one side of the partition 53. It is staggered with the pressure component 7, and the movements of the reinforcement component 6 and the pressure component 7 do not interfere with each other.

[0038] Each reinforcement component 6 includes a sliding rod 61 that is slidably connected to the side wall of the inner cavity of the first annular groove 51, one end of each sliding rod 61 extends to the inside of the second annular groove 52, and the end of each sliding rod 61 located inside the second annular groove 52 is fixedly connected to a reinforcement plate 62, and the side wall of the reinforcement plate 62 is provided with anti-slip grooves 621, and the end of each sliding rod 61 located inside the first annular groove 51 is fixedly connected to a support plate 63, and the side wall of each support plate 63 is elastically connected to the side wall of the inner cavity of the first annular groove 51 by a spring 64, and the sliding rod 61 at the corresponding position passes through the inner circle of the spring 64.

[0039] Specifically, the first substrate 1 and the end where the retaining ring 5 are located are subjected to water pressure, and the reinforcement component 6 is arranged on the inner ring side wall of the retaining ring 5, and the movable direction of the slide rod 61, the reinforcement plate 62 and the abutment plate 63 is radial. Under the curved surface guidance of the truncated cone-shaped first substrate 1, water flows into the first annular groove 51 of the retaining ring 5. When the pressure inside the hydraulic tunnel changes, the pressure on the abutment plate 63 changes accordingly, and the degree of its compression spring 64 is different, so that the distance to which the slide rod 61 drives the reinforcement plate 62 to push out is different, which can adaptively adjust the degree of tightness between the sealing device and the inner wall of the hydraulic tunnel to avoid the sealing device from failing to seal and detaching from the tunnel.

[0040] In order to solve the technical problem that the sealing device is unstable and easily causes water seepage when the water pressure changes, such as Figure 3 、 Figure 4 and Figure 6 As shown, the following preferred technical solutions are provided:

[0041] The pressure assembly 7 includes a second airbag 71 fixedly connected to the inner side wall of the second annular groove 52, and a plurality of plungers 72 are fixedly connected to the outer wall of one side of the second airbag 71. One end of the plunger 72 is connected to the interior of the second airbag 71. The movable end of the plunger 72 passes through the side wall of one end of the retaining ring 5 and is fixedly connected to the pressure plate 73. A connecting pipe 74 is fixedly connected to the outer wall of the other side of the second airbag 71. The connecting pipe 74 passes through the other end side wall of the retaining ring 5 and is connected to the interior of the first airbag 20.

[0042] Specifically, changes in the water pressure at the inlet of the hydraulic tunnel will cause changes in the axial pressure on one end of the pressure assembly 7, which will drive the movable ends of multiple plungers 72 to retract through the pressure plate 73, thereby increasing the pressure at one end of the rodless cavity of the plunger 72. One end of the plunger 72 is connected to the interior of the second airbag 71, and the second airbag 71 is connected to the interior of the first airbag 20 through the connecting tube 74. The increase in water pressure enhances the sealing degree between the first airbag 20 and the second airbag 71 and the inner wall of the hydraulic tunnel, thereby preventing leakage when the water pressure increases.

[0043] In order to solve the technical problem that the existing blocking device cannot be switched for temporary use during the temporary emergency blocking of the tunnel, which may lead to the failure to block the tunnel in time, such as Figure 3 and Figure 7 - Figure 11 As shown, the following preferred technical solutions are provided:

[0044] A circular groove 11 is formed at one end of the first substrate 1 , and an end cover 4 is mounted on one end of the circular groove 11 to close the circular groove 11 . A mounting hole 12 is formed at the center of the inner wall of the circular groove 11 .

[0045] The first adjusting component 8 includes an adjusting handle 81 arranged inside the circular groove 11, and the rotating shaft of the adjusting handle 81 is rotatably connected to the inside of the mounting hole 12. One end of the rotating shaft of the adjusting handle 81 is fixedly connected to a threaded rod 82, and the end of the threaded rod 82 away from the adjusting handle 81 is rotatably connected to the side wall of the second base plate 2. An axial adjusting disk 83 is threadedly connected to the outer wall of the threaded rod 82, and multiple connecting rods 3 are arranged through the axial adjusting disk 83. The connecting rod 3 prevents the axial adjusting disk 83 from rotating on itself and plays a guiding role for the axial adjusting disk 83. Multiple linkage rods 84 are fixedly connected to the side wall of the rotating shaft of the adjusting handle 81.

[0046] A plurality of embedded grooves 831 are provided on the side wall of the axial adjustment disk 83 at positions corresponding to the plurality of adjustment skeletons 10, and a groove 832 is provided on the inner cavity side wall of each embedded groove 831. A movable rod 833 is slidably connected inside each groove 832, and one end of each movable rod 833 is fixedly connected to a first connecting seat 834, and one end of each adjustment skeleton 10 is rotatably connected to the side wall of the corresponding first connecting seat 834.

[0047] The second adjustment component 9 includes a radial adjustment disk 91 rotatably connected to the inner ring side wall of the retaining ring 5. The radial adjustment disk 91 is an annular structure. One end of a plurality of linkage rods 84 is fixedly connected to the inner ring side wall of the radial adjustment disk 91, so that when the adjustment handle 81 drives the threaded rod 82 to rotate, it can also drive the radial adjustment disk 91 to rotate. A plurality of arc-shaped holes 911 are opened on the side wall of the radial adjustment disk 91, and the plurality of arc-shaped holes 911 are arranged in a circular array.

[0048] The second adjustment component 9 also includes a plurality of guide blocks 92 fixedly connected to the inner ring side wall of the retaining ring 5. The plurality of guide blocks 92 are arranged in a circular array. A guide hole 921 is opened on the side wall of each guide block 92. The arc hole 911 and the guide hole 921 are arranged in a one-to-one correspondence. A push rod 93 is slidingly provided inside the arc hole 911 and the guide hole 921 at the same position. When the radial adjustment disk 91 rotates, the inner wall of the arc hole 911 abuts against the push rod 93, driving the push rod 93 to move along the guide hole 921 toward the outside of the radial adjustment disk 91.

[0049] Each adjustment skeleton 10 includes a second connecting seat 101 fixedly connected to one end of the support rod 93, each second connecting seat 101 is rotatably connected to a first rotating rod 102, each first rotating rod 102 is rotatably connected to an end away from the second connecting seat 101 by a second rotating rod 103, and one end of each second rotating rod 103 is rotatably connected to the side wall of the corresponding first connecting seat 834.

[0050] Specifically, when the blocking device is transformed from a bottle stopper structure to a columnar structure with a uniform cross-section, the threaded rod 82 is driven to rotate by rotating the adjusting handle 81, so that the axial adjustment disk 83 moves toward the direction of the second base plate 2 and straightens the first rotating rod 102 and the second rotating rod 103. During this process, the second rotating rod 103 rotates around the first rotating rod 102, and the first rotating rod 102 rotates around the second connecting seat 101. When the second rotating rod 103 rotates to form a straight line with the first rotating rod 102, the second rotating rod 103 will not continue to rotate due to the obstruction of the first rotating rod 102. Due to the obstruction of the second connecting seat 101, the first rotating rod 102 will not continue to rotate. When the adjusting handle 81 rotates, it will also drive the radial adjusting disk 91 to rotate. The inner wall of the arc hole 911 is against the push rod 93, driving the push rod 93 to move along the guide hole 921 toward the outside of the radial adjusting disk 91. At the same time, one end of the second rotating rod 103 drives the first connecting seat 834 and the movable rod 833 to move along the groove 832 toward the outside of the axial adjusting disk 83. Through the joint action of the axial adjusting disk 83 and the radial adjusting disk 91, the adjusting skeleton 10 is transformed from a bottle stopper structure to a columnar structure with a uniform cross-section.

[0051] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic tunnel inlet plugging device, comprising a first base plate (1) and a second base plate (2), wherein the first base plate (1) is a truncated cone structure, and the first base plate (1) and the second base plate (2) are fixedly connected via a plurality of connecting rods (3), characterized in that: An end cap (4) is installed at one end of the first substrate (1), a retaining ring (5) is fixedly connected to the outer side wall of the first substrate (1), and a plurality of reinforcing components (6) are slidably provided on the inner side wall of the retaining ring (5). The reinforcing components (6) are used to adaptively adjust the degree of contact between the blocking device and the inner wall of the hydraulic tunnel when the water pressure at the inlet of the hydraulic tunnel changes, and play a role in reinforcing the blocking device when the water pressure increases. A pressure component (7) is fixedly installed on the outer side wall of the retaining ring (5), and the pressure component (7) is used to prevent leakage when the water pressure increases. A first adjusting component is rotatably connected between the side walls of the first substrate (1) and the second substrate (2). (8), a second adjustment component (9) is installed on the inner ring side wall of the retaining ring (5), and one end of the second adjustment component (9) is fixedly connected to a plurality of adjustment skeletons (10), and the plurality of adjustment skeletons (10) are arranged in a circular array, and one end of each adjustment skeleton (10) away from the second adjustment component (9) is rotatably connected to the side wall of the movable end of the first adjustment component (8), the first adjustment component (8) is used to drive the adjustment skeleton (10) to switch its shape along the axial direction, and the second adjustment component (9) is used to drive the adjustment skeleton (10) to switch its shape along the radial direction, and the outer ring side walls of the plurality of adjustment skeletons (10) are commonly fixedly connected to a first airbag (20).

2. A hydraulic tunnel inlet blocking device according to claim 1, characterized in that: A circular groove (11) is provided at one end of the first substrate (1), and a mounting hole (12) is provided at the center of the inner wall of the circular groove (11).

3. A hydraulic tunnel inlet blocking device according to claim 2, characterized in that: A first annular groove (51) is provided on the inner ring side wall of the retaining ring (5), a second annular groove (52) is provided on the outer ring side wall of the retaining ring (5), and a partition (53) is fixedly connected to the inner cavity side wall of the second annular groove (52).

4. A hydraulic tunnel inlet blocking device according to claim 3, characterized in that: Each of the reinforcing components (6) includes a sliding rod (61) that is slidably connected to the side wall of the inner cavity of the first annular groove (51), one end of each of the sliding rods (61) extends into the interior of the second annular groove (52), and one end of each of the sliding rods (61) located inside the second annular groove (52) is fixedly connected to a reinforcing plate (62), and the side wall of the reinforcing plate (62) is provided with an anti-slip groove (621), and one end of each of the sliding rods (61) located inside the first annular groove (51) is fixedly connected to a support plate (63), and the side wall of each support plate (63) is elastically connected to the side wall of the inner cavity of the first annular groove (51) through a spring (64), and the sliding rods (61) at the corresponding position pass through the inner ring of the spring (64).

5. The hydraulic tunnel inlet blocking device according to claim 3, characterized in that: The pressure assembly (7) includes a second airbag (71) fixedly connected to the inner side wall of the second annular groove (52), a plurality of plungers (72) fixedly connected to the outer wall of one side of the second airbag (71), one end of the plunger (72) is communicated with the interior of the second airbag (71), the movable end of the plunger (72) passes through the side wall of one end of the retaining ring (5) and is fixedly connected to the pressure plate (73), the outer wall of the other side of the second airbag (71) is fixedly connected to a connecting pipe (74), the connecting pipe (74) passes through the side wall of the other end of the retaining ring (5) and is communicated with the interior of the first airbag (20).

6. A hydraulic tunnel inlet blocking device according to claim 5, characterized in that: The first adjustment assembly (8) includes an adjustment handle (81) arranged inside the circular groove (11), the rotating shaft of the adjustment handle (81) is rotatably connected inside the mounting hole (12), one end of the rotating shaft of the adjustment handle (81) is fixedly connected to a threaded rod (82), the end of the threaded rod (82) away from the adjustment handle (81) is rotatably connected to the side wall of the second base plate (2), an axial adjustment disk (83) is threadedly connected on the outer wall of the threaded rod (82), a plurality of connecting rods (3) are arranged to pass through the axial adjustment disk (83), and a plurality of linkage rods (84) are fixedly connected to the side wall of the rotating shaft of the adjustment handle (81).

7. A hydraulic tunnel inlet blocking device according to claim 6, characterized in that: A plurality of embedded grooves (831) are provided on the side wall of the axial adjustment disk (83) at positions corresponding to the plurality of adjustment skeletons (10), a groove (832) is provided on the inner cavity side wall of each embedded groove (831), a movable rod (833) is slidably connected inside each groove (832), one end of each movable rod (833) is fixedly connected to a first connecting seat (834), and one end of each adjustment skeleton (10) is rotatably connected to the side wall of the corresponding first connecting seat (834).

8. A hydraulic tunnel inlet blocking device according to claim 7, characterized in that: The second adjustment assembly (9) includes a radial adjustment disk (91) rotatably connected to the inner ring side wall of the retaining ring (5), the radial adjustment disk (91) is an annular structure, one end of a plurality of linkage rods (84) is fixedly connected to the inner ring side wall of the radial adjustment disk (91), and a plurality of arc-shaped holes (911) are opened on the side wall of the radial adjustment disk (91), and the plurality of arc-shaped holes (911) are arranged in a circular array.

9. A hydraulic tunnel inlet blocking device according to claim 8, characterized in that: The second adjustment assembly (9) further comprises a plurality of guide blocks (92) fixedly connected to the inner ring side wall of the retaining ring (5), wherein the plurality of guide blocks (92) are arranged in a circular array, and a guide hole (921) is provided on the side wall of each guide block (92), wherein the arc-shaped holes (911) and the guide holes (921) are arranged in a one-to-one correspondence, and a stop rod (93) is provided inside the arc-shaped holes (911) and the guide holes (921) at the same position so as to slide together.

10. A hydraulic tunnel inlet blocking device according to claim 9, characterized in that: Each of the adjustment skeletons (10) includes a second connecting seat (101) fixedly connected to one end of the support rod (93), each of the second connecting seats (101) is rotatably connected to a first rotating rod (102), each of the first rotating rods (102) is rotatably connected to an end away from the second connecting seat (101) by a second rotating rod (103), and one end of each of the second rotating rods (103) is rotatably connected to a side wall of the corresponding first connecting seat (834).

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