A sealing device for the maintenance of a small reservoir water conveyance tunnel

Abstract

This utility model discloses a sealing device for the maintenance of a small reservoir water conveyance tunnel, relating to the technical field of sealing devices. It includes a water conveyance pipe, one end of which is fixedly connected to an extension pipe. The extension pipe includes a first connecting pipe, a second connecting pipe, and a third connecting pipe. The first connecting pipe is fixed to one end of the water conveyance pipe, and the second connecting pipe is fixed between the first and third connecting pipes. The middle section of the second connecting pipe is U-shaped to facilitate downward water flow. By setting up the extension pipe, which includes the first, second, and third connecting pipes, when maintenance of the water conveyance pipe is required, the valve on the drain pipe is opened, allowing water from both the first and third connecting pipes to flow into the second connecting pipe. The water then flows into the drain pipe through the middle section of the second connecting pipe. Because the middle section of the second connecting pipe is U-shaped, it facilitates the entry of water from the first and third connecting pipes into the drain pipe, thereby improving drainage efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing devices, specifically a sealing device for the maintenance of a small reservoir water conveyance tunnel. Background Technology

[0002] In water conservancy projects, reservoir water conveyance tunnels serve as crucial channels connecting reservoirs with downstream water supply, irrigation, and power generation systems. These tunnels are constantly submerged or in humid environments, making them susceptible to problems such as lining cracks, structural aging, and leakage due to factors like water erosion, sediment abrasion, water corrosion, and geological changes. Regular or emergency maintenance is necessary to ensure their safe operation. Maintenance work requires blocking the water flow within the tunnel to create dry working conditions; therefore, sealing devices are core equipment. An existing maintenance tunnel structure for water conveyance pipelines (Announcement No.: CN222277868U) has the following drawbacks in use:

[0003] Existing extension pipes are installed on one side of the water supply pipeline. Workers enter the water supply pipeline through the extension pipe for inspection. The bottom of the extension pipe is fixedly connected to a drainage component to drain the water inside. However, the drainage component has low drainage efficiency, which can easily affect the maintenance efficiency. Moreover, there is no protective device for the extension pipe. In water supply tunnels with poor geological conditions (such as loose surrounding rock that is prone to collapse), traditional sealing devices can only focus on stopping water and cannot take into account the support of the tunnel body. Gravel and other debris inside the tunnel can easily fall onto the surface of the water supply pipe and the extension pipe, causing damage to the water supply pipe and the extension pipe. Therefore, this patent proposes a sealing device for the maintenance of small reservoir water supply tunnels to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a sealing device for the maintenance of small reservoir water conveyance tunnels, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing device for the maintenance of a small reservoir water conveyance tunnel, comprising a water conveyance pipe, one end of which is fixedly connected to an extension pipe, the extension pipe comprising a first connecting pipe, a second connecting pipe and a third connecting pipe, the first connecting pipe being fixed at one end of the water conveyance pipe, the second connecting pipe being fixed between the first connecting pipe and the third connecting pipe, the middle of the second connecting pipe being U-shaped to facilitate downward water flow, the bottom end of the second connecting pipe being fixedly connected to a drain pipe, a valve being installed on the drain pipe, and protective frames being provided on the outer sides of both the water conveyance pipe and the extension pipe, with multiple anchor rods installed on the protective frames.

[0006] Preferably, the outer wall of the extension tube is fixed with a clamp and a connecting frame, and the bottom ends of the clamp and the connecting frame are respectively fixed with a first bracket and a second bracket, and the bottom ends of the first bracket and the second bracket are respectively fixed with a first support seat and a second support seat.

[0007] Preferably, the clamp is fixed to the outer wall of the first connecting pipe and the third connecting pipe, and the connecting bracket is fixed to the outer wall of the second connecting pipe.

[0008] Preferably, a flange is fixed to the end of the extension tube, and a cover plate is installed at one end of the flange.

[0009] Preferably, a plurality of screws are threaded between the cover plate and the flange.

[0010] Preferably, a first sealing ring and a second sealing ring are fixed at one end of the cover plate near the extension tube. The first sealing ring is inserted into the extension tube. A groove is provided at one end of the flange near the cover plate, and the second sealing ring is inserted into the groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] By installing extension pipes, which include a first connecting pipe, a second connecting pipe, and a third connecting pipe, when maintenance of the water supply pipe is required, the valve on the drain pipe is opened, allowing water from both the first and third connecting pipes to flow into the second connecting pipe. The water then flows into the drain pipe through the middle section of the second connecting pipe. Since the middle section of the second connecting pipe is U-shaped, it facilitates the entry of water from the first and third connecting pipes into the drain pipe, thereby improving drainage efficiency and accelerating maintenance. Furthermore, by installing protective frames, the water supply pipe and extension pipes are protected, preventing debris and other objects inside the tunnel from falling onto their surfaces and causing damage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model after the protective frame has been removed;

[0015] Figure 3 This is a schematic diagram of the extension tube structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the cover plate structure of this utility model.

[0017] In the diagram: 1. Water supply pipe; 2. Extension pipe; 201. First connecting pipe; 202. Second connecting pipe; 203. Third connecting pipe; 3. Clamp; 4. First bracket; 5. First support seat; 6. Connecting frame; 7. Second bracket; 8. Second support seat; 9. Drainage pipe; 10. Valve; 11. Flange; 12. Cover plate; 13. First sealing ring; 14. Second sealing ring; 15. Screw; 16. Protective frame; 17. Anchor bolt. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In water conservancy projects, reservoir water conveyance tunnels serve as crucial channels connecting reservoirs with downstream water supply, irrigation, and power generation systems. These tunnels are constantly submerged or in humid environments, susceptible to erosion from water flow, sediment abrasion, water corrosion, and geological changes. Consequently, they are prone to problems such as lining cracks, structural aging, and leakage. Regular or emergency maintenance is necessary to ensure their safe operation. Maintenance work requires blocking the water flow within the tunnel to create dry working conditions; therefore, a sealing device becomes a core component. This utility model provides a small sealing device for the maintenance of reservoir water conveyance tunnels. This device utilizes an extension pipe 2, which includes a first connecting pipe 201, a second connecting pipe 202, and a third connecting pipe 203. 3. When maintenance is required on water pipe 1, the valve 10 on drain pipe 9 is opened, and the water in the first connecting pipe 201 and the third connecting pipe 203 flows into the second connecting pipe 202. The water then flows into drain pipe 9 through the middle of the second connecting pipe 202. Since the middle of the second connecting pipe 202 is U-shaped, it is easier for the water in the first connecting pipe 201 and the third connecting pipe 203 to enter drain pipe 9, thereby improving drainage efficiency and speeding up maintenance. In addition, by setting up a protective frame 16, water pipe 1 and extension pipe 2 are protected to prevent gravel and other debris in the cave from falling on the surface of water pipe 1 and extension pipe 2 and causing damage to them.

[0020] like Figures 1-4 As shown, this utility model provides a technical solution: a sealing device for the maintenance of a small reservoir water conveyance tunnel, including a water conveyance pipe 1, one end of which is fixedly connected to an extension pipe 2. The extension pipe 2 includes a first connecting pipe 201, a second connecting pipe 202, and a third connecting pipe 203. The first connecting pipe 201 is fixed to one end of the water conveyance pipe 1, and the second connecting pipe 202 is fixed between the first connecting pipe 201 and the third connecting pipe 203. The middle position of the second connecting pipe 202 is U-shaped to facilitate downward water flow. The bottom end of the second connecting pipe 202 is fixedly connected to a drain pipe 9, and a valve 10 is installed on the drain pipe 9. Protective frames 16 are provided on the outside of both the water conveyance pipe 1 and the extension pipe 2. Multiple anchor rods 17 are installed on the protective frames 16 to fix the protective frames 16 in the tunnel.

[0021] It should be noted that by setting up extension pipe 2, which includes a first connecting pipe 201, a second connecting pipe 202, and a third connecting pipe 203, when maintenance is required on water supply pipe 1, the valve 10 on drain pipe 9 is opened, and the water in the first connecting pipe 201 and the third connecting pipe 203 flows into the second connecting pipe 202. The water then flows into drain pipe 9 through the middle of the second connecting pipe 202. Since the middle of the second connecting pipe 202 is U-shaped, it is easier for the water in the first connecting pipe 201 and the third connecting pipe 203 to enter drain pipe 9, thereby improving drainage efficiency and speeding up maintenance. In addition, by setting up protective frame 16, water supply pipe 1 and extension pipe 2 are protected to prevent gravel and other debris in the cave from falling on the surface of water supply pipe 1 and extension pipe 2 and causing damage to them.

[0022] like Figure 2 As shown, a clamp 3 and a connecting frame 6 are fixed to the outer wall of the extension pipe 2. A first bracket 4 and a second bracket 7 are fixed to the bottom ends of the clamp 3 and the connecting frame 6, respectively. A first support seat 5 and a second support seat 8 are fixed to the bottom ends of the first support seat 4 and the second support seat 7, respectively. The clamp 3 is fixed to the outer wall of the first connecting pipe 201 and the third connecting pipe 203, and the connecting frame 6 is fixed to the outer wall of the second connecting pipe 202.

[0023] It should be noted that the weight of the extension tube 2 is transferred to the ground through the first support 5 and the second support 8 at the bottom to prevent the device from shaking. The first support 5 and the second support 8 can be fixed to the ground with cement or fixing nails.

[0024] like Figure 4 As shown, a flange 11 is fixed to the end of the extension pipe 2, and a cover plate 12 is installed on one end of the flange 11. Multiple screws 15 are screwed between the cover plate 12 and the flange 11. A first sealing ring 13 and a second sealing ring 14 are fixed to the end of the cover plate 12 near the extension pipe 2. The first sealing ring 13 is inserted into the extension pipe 2. A groove is opened at the end of the flange 11 near the cover plate 12, and the second sealing ring 14 is inserted into the groove.

[0025] It should be noted that the cover plate 12 is circular and matches the flange 11. The outer wall of the first sealing ring 13 is tightly fitted with the inner wall of the extension pipe 2. Its function is to block the internal channel of the extension pipe 2 and form the first sealing line. The second sealing ring 14 is used to seal the planar gap between the cover plate 12 and the flange 11 and form the second sealing line. The double sealing improves the leak prevention effect.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A small reservoir water conveyance tunnel inspection plugging device, comprising a water conveyance pipe (1), characterized in that: One end of the water supply pipe (1) is fixedly connected to an extension pipe (2). The extension pipe (2) includes a first connecting pipe (201), a second connecting pipe (202), and a third connecting pipe (203). The first connecting pipe (201) is fixed at one end of the water supply pipe (1), and the second connecting pipe (202) is fixed between the first connecting pipe (201) and the third connecting pipe (203). The middle position of the second connecting pipe (202) is U-shaped to facilitate water flow downward. The bottom end of the second connecting pipe (202) is fixedly connected to a drain pipe (9). A valve (10) is installed on the drain pipe (9). A protective frame (16) is provided on the outside of both the water supply pipe (1) and the extension pipe (2). Multiple anchor rods (17) are installed on the protective frame (16).

2. The sealing device for the maintenance of a small reservoir water conveyance tunnel according to claim 1, characterized in that: The outer wall of the extension tube (2) is fixed with a clamp (3) and a connecting frame (6). The bottom ends of the clamp (3) and the connecting frame (6) are respectively fixed with a first bracket (4) and a second bracket (7). The bottom ends of the first bracket (4) and the second bracket (7) are respectively fixed with a first support seat (5) and a second support seat (8).

3. A sealing device for the maintenance of a small reservoir water conveyance tunnel according to claim 2, characterized in that: The clamp (3) is fixed to the outer wall of the first connecting pipe (201) and the third connecting pipe (203), and the connecting bracket (6) is fixed to the outer wall of the second connecting pipe (202).

4. A sealing device for the maintenance of a small reservoir water conveyance tunnel according to claim 1, characterized in that: The end of the extension tube (2) is fixed with a flange (11), and a cover plate (12) is installed on one end of the flange (11).

5. A sealing device for the maintenance of a small reservoir water conveyance tunnel according to claim 4, characterized in that: Multiple screws (15) are screwed between the cover plate (12) and the flange (11).

6. A sealing device for the maintenance of a small reservoir water conveyance tunnel according to claim 4, characterized in that: The cover plate (12) is fixed with a first sealing ring (13) and a second sealing ring (14) at one end near the extension tube (2). The first sealing ring (13) is inserted into the extension tube (2). The flange (11) is provided with a groove at one end near the cover plate (12), and the second sealing ring (14) is inserted into the groove.

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