Non-pressure-hole structure suitable for water volume adjustment

Abstract

The utility model belongs to the technical field of non-pressure diversion tunnels, and particularly relates to a non-pressure tunnel structure suitable for water volume adjustment, which comprises a non-pressure tunnel, a plurality of reservoirs arranged at water flow positions at the bottom end in the non-pressure tunnel, turning plates arranged at the tops of the reservoirs, and hydraulic rods arranged at the bottoms of the turning plates. The two ends of the hydraulic rod are movably connected with the bottom of the turning plate and one side of the top end of the interior of the reservoir through the arranged movable connecting base, the multiple reservoirs are arranged in the non-pressure tunnel, the turning plate turning inwards is arranged on the tops of the reservoirs, then the bottom ends of the reservoirs communicate with the downstream of the interior of the non-pressure tunnel, a drainage sluice is used for controlling, and therefore the non-pressure tunnel is formed. When the water flow in the non-pressure tunnel is too large or too small, control over the water flow can be achieved by opening and closing the turning plate and the drainage sluice, part of water is collected into a plurality of reservoirs, or water in the reservoirs is discharged out of the flow guide pipes, and therefore it is guaranteed that the water yield at the water outlet is stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of non-pressure water diversion tunnels, and in particular relates to a non-pressure tunnel structure suitable for water volume regulation. Background Art

[0002] Pressureless tunnels can be used for water diversion and irrigation, urban water supply, navigation, wood crossing, etc., and can also be used for water diversion hydroelectric power generation. In water conservancy hubs, they are also often used for flood discharge and construction diversion. Most of the water diversion tunnels on artificial rivers and channels are also pressureless tunnels.

[0003] The water pressure in a pressure-free tunnel is relatively small, and a circular arch straight wall section is mostly used. When the geological conditions are poor, a horseshoe or circular section can be used. To ensure an open flow state, when the tunnel has a low-velocity constant flow and good ventilation conditions, the space above the water surface should not be less than 15% of the tunnel cross-sectional area, and the clearance height should generally not be less than 40 cm. Under high-velocity non-constant flow conditions, the effects of aeration and surge must also be considered. When using a circular straight-wall section, try to limit the water surface and the shock wave crest to the range of the straight wall. For longer unlined tunnels or anchor-sprayed lined tunnels, as well as tunnels with navigation and rafting requirements, the space above the water surface should be appropriately increased in accordance with relevant regulations.

[0004] At present, most of the existing non-pressure water diversion tunnels are not convenient for controlling water flow during use. The water flow rate is only determined by the water inlet at the water inlet. When the water inlet is large, it is difficult to control the water flow rate at the outlet in time, which may cause the outlet to be flooded; when the water flow rate is small, it is difficult to increase the water flow rate according to the water demand downstream. For this reason, we propose a non-pressure tunnel structure suitable for water volume regulation. Utility Model Content

[0005] In order to solve the defects of the above-mentioned prior art, the utility model proposes a pressure-free hole structure suitable for water volume regulation.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A pressure-free hole structure suitable for water volume regulation, comprising:

[0008] A pressure-free tunnel, which is a tunnel structure with openings at both ends and a closed interior, sloping downward from left to right;

[0009] A flow monitoring unit, which is arranged inside the pressureless tunnel and is used to monitor the water flow inside the pressureless tunnel in real time;

[0010] The water storage units are multiple in number and are arranged at the lower side of the pressure-free tunnel and are connected to the inside of the pressure-free tunnel to drain the water inside the pressure-free tunnel.

[0011] In a preferred embodiment, the flow monitoring unit includes an impeller assembly installed inside the pressureless tunnel, the impeller assembly includes a mounting frame, an impeller and a speed sensor, the bottom of the mounting frame is fixed to the bottom wall of the pressureless tunnel by welding, the impeller is rotatably installed between the mounting frames, and the speed sensor is installed on the rotating shaft of the impeller.

[0012] Furthermore, there is a distance between the impeller and the inner bottom wall of the pressureless tunnel.

[0013] In a preferred embodiment, the structure of each water storage unit includes a rotatable flap, a driving device and a water tank. A plurality of mounting holes are opened on the bottom wall of the pressure-free tunnel. The flap is located in the mounting holes. The top of the water tank is connected to the pressure-free tunnel through the mounting holes. The middle or end of the flap is hinged to the side wall of the water tank. The driving device adopts a hydraulic rod, one end of which is hinged to the flap, and the other end is hinged to the inner wall of the water tank.

[0014] Furthermore, a guide pipe is provided at the bottom of the water reservoir, one end of the guide pipe is connected to the water reservoir, and the other end is connected to the inside of the pressureless tunnel. A drainage gate is also provided on the guide pipe.

[0015] Furthermore, the number of the guide pipes is two.

[0016] In a preferred embodiment, the middle part of the flap is rotatably connected to the inner wall of the water reservoir via a rotating shaft, the flap can rotate clockwise / counterclockwise around the rotating shaft, one end of the hydraulic rod is hinged to the inner wall of the water reservoir, and the other end is hinged to the middle right part of the flap.

[0017] In a preferred embodiment, the right end of the flap is rotatably connected to the inner wall of the water reservoir via a rotating shaft, the flap can rotate clockwise / counterclockwise around the rotating shaft, one end of the hydraulic rod is hinged to the bottom wall / side wall of the water reservoir, and the other end is hinged to the middle left part of the flap.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0019] In general, compared with the prior art, the utility model provides a pressure-free tunnel structure suitable for water volume regulation, which realizes real-time monitoring and regulation of water flow by setting a flow monitoring unit and a water storage unit in the pressure-free tunnel. When the water flow exceeds the set threshold, the system will automatically turn on the water storage unit and store the excess water in the reservoir, thereby reducing the water flow at the outlet and avoiding floods. On the contrary, when the water flow at the outlet is small, the system will turn off the water storage unit and drain the water in the reservoir to the inside of the pressure-free tunnel to maintain a stable water output at the outlet. This structure can effectively reduce the fluctuation of water flow inside the pressure-free tunnel through automated water volume regulation, ensure the safe and stable operation of the water conservancy project, and improve the utilization efficiency of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a structural schematic diagram of a flow monitoring unit in one of the embodiments;

[0023] Figure 3 It is a structural schematic diagram of a water storage unit in one of the embodiments;

[0024] Figure 4 FIG. 1 is a schematic structural diagram of a water storage unit in one embodiment. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and shown in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0026] This embodiment provides a pressure-free hole structure suitable for water volume regulation. Figure 1 ,include:

[0027] The pressureless tunnel 1 is a tunnel structure with openings at both ends and a closed interior. Specifically, the left end is a water inlet 2 and the right end is a water outlet 3. It slopes downward from left to right to transport water from a high water level to a low water level. Its function is to control the reservoir water level, discharge flood water and divert water through the transportation and distribution of water, so as to reduce flood disasters and ensure the safety of engineering construction.

[0028] A flow monitoring unit, which is arranged inside the pressureless tunnel 1 and is used to monitor the water flow inside the pressureless tunnel 1 in real time;

[0029] The water storage units are multiple in number and are arranged at the lower side of the pressure-free tunnel 1 and communicated with the interior of the pressure-free tunnel 1 .

[0030] Through the above scheme, when the flow monitoring unit detects that the water flow inside the pressureless tunnel 1 exceeds the maximum threshold, the signal is transmitted to the terminal, and the terminal device processes and analyzes the data, and then the water storage unit is turned on. The water storage unit drains the water inside the pressureless tunnel 1 and stores it in the water storage unit. After multiple water storage units store water, the water flow from the water inlet 2 to the water outlet 3 gradually decreases until the water output at the water outlet 3 tends to a normal and stable state, avoiding disasters. When the water output at the water outlet 3 is small, the flow monitoring unit detects that its flow is less than the minimum threshold, and transmits a signal to the terminal, which is processed and analyzed by the terminal device. The data is then closed and the water storage unit is drained to the inside of the pressureless tunnel 1, thereby ensuring the stability of the water output at the water outlet 3.

[0031] In a specific embodiment, see Figure 2 The flow monitoring unit includes an impeller assembly installed inside the pressureless tunnel 1, and the impeller assembly includes a mounting frame 4, an impeller 5 and a speed sensor 6. The bottom of the mounting frame 4 is fixed to the bottom wall of the pressureless tunnel 1 by welding, and the impeller 5 is rotatably installed between the mounting frames 4. The speed sensor 6 is installed on the rotating shaft of the impeller 5. Through the above, the water flow in the pressureless tunnel 1 can drive the impeller 5 to rotate. The greater the water flow rate, the faster the impeller 5 rotates. The water flow in the pressureless tunnel 1 is converted into the rotation speed of the impeller assembly, and the rotation speed of the impeller 5 is converted into a digital signal that can be processed by a computer through the speed sensor 6.

[0032] Furthermore, there is a certain distance between the impeller 5 and the inner bottom wall of the pressureless tunnel 1, so that when the water flow rate is small, it can pass directly under the impeller 5 and cannot push the impeller 5 to rotate. The water flows normally. Because there is no flood risk in this case, there is no need to adjust the water flow rate.

[0033] In a specific embodiment, the structure of each water storage unit includes a rotatable flap 7, a driving device 8 and a water reservoir 9. A plurality of mounting holes 10 are opened on the bottom wall of the pressureless tunnel 1. The flap 7 is located in the mounting hole 10. The top of the water reservoir 9 is connected to the pressureless tunnel 1 through the mounting hole 10. The middle or end of the flap 7 is hinged to the side wall of the water reservoir 9. The driving device 8 can adopt a hydraulic rod, one end of which is hinged to the flap 7, and the other end is hinged to the inner wall of the water reservoir 9. Through the above, when the flow rate in the pressureless tunnel 1 is small, the flap 7 is in the initial state, the flap 7 is flush with the bottom surface of the pressureless tunnel 1, and the water flows normally. When the water flow rate is too large, the driving device 8 controls the flap 7 to rotate, so that a gap is generated between the flap 7 and the mounting hole 10, and the water flow can flow into the water reservoir 9 below through the gap, thereby achieving the purpose of reducing the water flow rate inside the pressureless tunnel 1.

[0034] Furthermore, a guide pipe 11 is also provided at the bottom of the water reservoir 9. There is no limit to the number of the guide pipes 11. In the present embodiment, two guide pipes are preferably provided. One end of the guide pipe 11 is connected to the water reservoir 9, and the other end is connected to the interior of the pressureless tunnel 1. A drain gate 12 is also provided on the guide pipe 11. Through the above, when the water output from the water outlet 3 is small, when the flow monitoring unit detects that the flow rate is less than the minimum threshold, the signal is transmitted to the terminal, and the terminal device processes and analyzes the data, and then closes the flap 7 above the water reservoir 9, and opens the drain gate 12, and drains the water in the water reservoir 9 to the interior of the pressureless tunnel 1 through the guide pipe 11, thereby ensuring the stability of the water output at the water outlet 3.

[0035] It should be understood that the number of the water storage units is not specifically limited, as long as the installation positions on the pressureless tunnel 1 are arranged at equal intervals. The preferred two groups of numbers in this embodiment should not be understood as limiting the scope of protection of the utility model.

[0036] In another preferred embodiment, see Figure 3 The middle part of the flap 7 is rotatably connected to the inner wall of the water reservoir 9 through a rotating shaft, and the flap 7 can rotate clockwise / counterclockwise around the rotating shaft. One end of the hydraulic rod is hinged to the inner wall of the water reservoir 9, and the other end is hinged to the middle right part of the flap 7. Through the above, the piston of the hydraulic rod is retracted inward, and the flap 7 rotates counterclockwise around the rotating shaft, so that a gap flows out between the left side of the flap 7 and the mounting hole 10, and the water flow can flow into the water reservoir 9 below through the gap, thereby achieving the purpose of reducing the water flow inside the pressureless tunnel 1.

[0037] In another preferred embodiment, see Figure 4The right end of the flap 7 is rotatably connected to the side of the inner wall mounting hole 10 of the water reservoir 9 through a rotating shaft. The flap 7 can rotate clockwise / counterclockwise around the rotating shaft. One end of the hydraulic rod is hinged to the bottom wall / side wall of the water reservoir 9, and the other end is hinged to the left middle part of the flap 7. Through the above, the piston of the hydraulic rod extends outward, and the flap 7 rotates counterclockwise around the rotating shaft, so that a gap flows out between the left side of the flap 7 and the mounting hole 10, and the water flow can flow into the water reservoir 9 below through the gap, thereby achieving the purpose of reducing the water flow inside the pressureless tunnel 1.

[0038] Working principle and use:

[0039] During use, the speed sensor 6 is used to monitor the speed of the impeller 5 in real time to determine the flow rate and flow of the water. When the water flow is in a relatively stable state, there is a certain distance between the impeller 5 and the flap 7, and the flap 7 is flush with the inner bottom surface of the pressureless tunnel 1, so that the water flow cannot drive the impeller 5 to rotate, and the water flows normally. When the water flow at the water inlet 2 is too large, the water flowing into the pressureless tunnel 1 will drive the impeller 5 to rotate due to the excessive flow, and the speed sensor 6 will record it, and the signal will be transmitted to the terminal, which will be processed by the terminal device. The data is processed and analyzed, and then the hydraulic rod is started to shrink it, and the flap 7 is turned inward, thereby opening the water reservoir 9 to store water. After the multiple water reservoirs 9 inside the pressureless tunnel 1 store water, the water flow from the water inlet 2 to the water outlet 3 gradually decreases until the water output at the water outlet 3 tends to a normal and stable state to avoid causing disasters. When the water output at the water outlet 3 is small, the drain gates are opened from top to bottom in sequence to divert the water in the water reservoir 9 from the drain gate through the diversion pipe 11 to the inside of the pressureless tunnel 1, thereby ensuring the stability of the water output at the water outlet 3.

[0040] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A pressure-free hole structure suitable for water volume regulation, characterized in that: include: A pressure-free tunnel (1), the pressure-free tunnel (1) being a tunnel structure with openings at both ends and a closed interior, and sloping downward from left to right; A flow monitoring unit, the flow monitoring unit being arranged inside the pressureless tunnel (1) and used for real-time monitoring of the water flow inside the pressureless tunnel (1); A water storage unit, wherein the water storage units are arranged at the lower side of the pressureless tunnel (1) and are connected to the inside of the pressureless tunnel (1) and are used to drain water from the inside of the pressureless tunnel.

2. A pressure-free hole structure suitable for water volume regulation according to claim 1, characterized in that: The flow monitoring unit comprises an impeller assembly installed inside the pressureless tunnel (1), the impeller assembly comprising a mounting frame (4), an impeller (5) and a rotation speed sensor (6), the bottom of the mounting frame (4) is fixed to the bottom wall of the pressureless tunnel (1) by welding, the impeller (5) is rotatably mounted between the mounting frames (4), and the rotation speed sensor (6) is mounted on the rotating shaft of the impeller (5).

3. A pressure-free hole structure suitable for water volume regulation according to claim 2, characterized in that: There is a distance between the impeller (5) and the inner bottom wall of the pressureless tunnel (1).

4. A pressure-free hole structure suitable for water volume regulation according to claim 1, characterized in that: The structure of each water storage unit comprises a rotatable flap (7), a driving device (8) and a water storage tank (9); a plurality of mounting holes (10) are provided on the bottom wall of the pressureless tunnel (1); the flap (7) is located in the mounting holes (10); the top of the water storage tank (9) is connected to the pressureless tunnel (1) through the mounting holes (10); the middle or end of the flap (7) is hinged to the side wall of the water storage tank (9); the driving device (8) adopts a hydraulic rod; one end of the hydraulic rod is hinged to the flap (7) and the other end is hinged to the inner wall of the water storage tank (9).

5. A pressure-free hole structure suitable for water volume regulation according to claim 4, characterized in that: A flow guide pipe (11) is also provided at the bottom of the water reservoir (9), one end of the flow guide pipe (11) is connected to the water reservoir (9), and the other end is connected to the inside of the pressureless tunnel (1), and a drainage gate (12) is also correspondingly provided on the flow guide pipe (11).

6. A pressure-free hole structure suitable for water volume regulation according to claim 5, characterized in that: The number of the flow guide pipes is two.

7. A pressure-free hole structure suitable for water volume regulation according to claim 4, characterized in that: The middle part of the flap (7) is rotatably connected to the inner wall of the water reservoir (9) via a rotating shaft, and the flap (7) can rotate around the rotating shaft. One end of the hydraulic rod is hinged to the inner wall of the water reservoir (9), and the other end is hinged to the middle right part of the flap (7).

8. The pressure-free hole structure suitable for water volume regulation according to claim 4, characterized in that: The right end of the flap (7) is rotatably connected to the inner wall of the water reservoir (9) via a rotating shaft, and the flap (7) can rotate around the rotating shaft. One end of the hydraulic rod is hinged to the bottom wall or side wall of the water reservoir (9), and the other end is hinged to the left portion of the middle of the flap (7).

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