Underflow type energy dissipation structure

Abstract

The utility model discloses an underflow type energy dissipation structure, and belongs to the technical field of water conservancy project energy dissipation structures, and the underflow type energy dissipation structure comprises a drainage pool body, an energy dissipation pool body arranged at the right end of the drainage pool body and an apron arranged at the right end of the energy dissipation pool body which are sequentially arranged in the water flow direction; a plurality of first energy dissipation plates are arranged at the top of the discharge pool body, a plurality of energy dissipation ridges are arranged at the top of the energy dissipation pool body, a plurality of water drainage pipes are arranged at the bottom of the inner wall of the energy dissipation pool body, a plurality of second energy dissipation plates are arranged at the top of the apron, a plurality of counter holes are formed in the discharge pool body, and a plurality of suck-back holes are formed in the apron. A backflow pipeline used for discharging flow is arranged on the flow discharging pool body, the opposite flushing holes and the suck-back holes are communicated with the backflow pipeline, a water discharging pool body is arranged at the bottom of the energy dissipation pool body, and the backflow pipeline is communicated with the water discharging pool body. The underflow energy dissipation structure has the effect of improving the energy dissipation effect of the underflow energy dissipation structure.

Description

Technical Field

[0001] The present application relates to the field of water conservancy project energy dissipation structure technology, and in particular to an underflow energy dissipation structure. Background Art

[0002] Water conservancy projects are projects built to control and allocate natural surface water and groundwater to achieve the purpose of eliminating harm and promoting benefits. They are also called water projects. Water conservancy projects require the construction of different types of hydraulic structures such as dams, dikes, spillways, sluices, water inlets, channels, ferries, rafts, and fishways to achieve their goals.

[0003] In water conservancy projects, controlling water flow downstream of the dam is crucial for ensuring its safe operation. While commonly used energy dissipation structures dissipate water energy to a certain extent, much remains to be done. Traditional underflow energy dissipation structures dissipate water energy through stilling basins. However, when faced with high flow rates and high head, their energy dissipation effectiveness is insufficient. Furthermore, long-term operation can lead to siltation in the stilling basins, which not only affects energy dissipation effectiveness but also increases the difficulty and cost of maintenance.

[0004] Therefore, how to effectively improve the energy dissipation effect of the underflow energy dissipation structure has become a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0005] In order to effectively improve the energy dissipation effect of the underflow energy dissipation structure, the present application provides an underflow energy dissipation structure.

[0006] The present application provides an underflow energy dissipation structure that adopts the following technical solutions:

[0007] A bottom flow energy dissipation structure comprises a discharge pool body arranged in sequence along the direction of water flow, an energy dissipation pool body arranged at the right end of the discharge pool body, a guard tank arranged at the right end of the energy dissipation pool body, a force dissipation threshold arranged on the guard tank, a plurality of first energy dissipation plates arranged on the top of the discharge pool body, a plurality of energy dissipation sills arranged on the top of the energy dissipation pool body, a plurality of drainage pipes arranged on the bottom of the inner wall of the energy dissipation pool body, a plurality of second energy dissipation plates arranged on the top of the guard tank, a plurality of counter-punching holes opened on the discharge pool body, a plurality of back-suction holes opened on the guard tank, a return flow pipe for discharge arranged on the discharge pool body, the counter-punching holes and the back-suction holes are connected with the return flow pipe, a drainage pool body is arranged at the bottom of the energy dissipation pool body, and the return flow pipe is connected with the drainage pool body.

[0008] By adopting the above technical solution, the downstream water flow first enters the discharge pool body, and the first energy dissipation block on the top surface of the discharge pool body first dissipates the water flow for the first time. In this process, part of the water flow passes through the flushing hole and the return pipe into the drainage pool body. The water flow after the first energy dissipation enters the energy dissipation pool body, and several energy dissipation sills on the top surface of the energy dissipation pool body dissipate the energy of the entering water for the second time. At the same time, the water inside the energy dissipation pool flows into the drainage pool body at the bottom through the drain pipe. The water flow in the energy dissipation pool body passes through the guard tank, and the second energy dissipation plate on the top surface of the guard tank dissipates the water flow again. At the same time, part of the water flow through the guard tank passes through the back suction hole and the return pipe into the drainage pool body. When the water flows into the bottom drainage pool body, it collides with the inner wall of the bottom drainage pool body to dissipate energy. The smooth water flow after energy dissipation is discharged through the dissipation sill on the guard tank and the drainage pool body at the bottom of the energy dissipation pool.

[0009] Preferably, the return pipe includes several first branch pipes connected to the punching holes, several second branch pipes connected to the back suction holes, a main pipe connecting the first branch pipes and the second branch pipes, and several third branch pipes connected to the drainage pool body.

[0010] By adopting the above technical solution, the water flows into the first branch pipe through the punching hole after the first energy dissipation, and then enters the main pipe through the first branch pipe. Then the water flows through the energy dissipation pool and the guard tank to dissipate energy. After the energy dissipation again, the water flows into the second branch pipe through the back suction hole on the guard tank, and then enters the main pipe through the second pipe. The water flow in the main pipe flows into the drainage pool through the third branch pipe. The punching holes correspond one-to-one to the first pipe, and the back suction holes correspond one-to-one to the second pipe, which can assist in the energy dissipation of the water flow to the greatest extent, and can also protect the structure of the energy dissipation pool to a certain extent.

[0011] Preferably, the top of the punching hole and the top of the back-suction hole are both provided with a first fine sand filter net, and the first fine sand filter net is fixedly connected to the top surface of the first branch pipe and the second branch pipe respectively.

[0012] By adopting the above technical solution, the setting of the first fine sand filter can effectively prevent impurities such as fine sand in the water flow from entering the first pipe and the second pipe through the flushing hole and the backflow hole, protecting the return pipe from being blocked to ensure that the return pipe can work normally.

[0013] Preferably, outer surfaces of the first energy dissipation plate and the second energy dissipation plate are provided with concave-convex structures.

[0014] By adopting the above technical solution, the design of the concave and convex structure on the first energy dissipation plate and the second energy dissipation plate helps to increase the contact area between the water flow and the first energy dissipation plate and the second energy dissipation plate, significantly improves the energy dissipation efficiency of the water flow, effectively reduces the scouring force of the water flow on the riverbed, and further dissipates the energy of the water flow.

[0015] Preferably, the first energy dissipation plate and the second energy dissipation plate are made of high-strength composite material.

[0016] By adopting the above technical solution, the high-strength composite material improves the strength and corrosion resistance of the first energy dissipation plate and the second energy dissipation plate structure, and increases the service life of the first energy dissipation plate and the second energy dissipation plate.

[0017] Preferably, the surfaces of the first energy dissipation plate and the second energy dissipation plate are coated with a polymer wear-resistant material.

[0018] By adopting the above technical solution, the polymer wear-resistant material can significantly enhance the wear resistance of the energy dissipation plate, further extend its service life and reduce maintenance costs.

[0019] Preferably, a second fine sand filter is provided at the top of the drainage pipe.

[0020] By adopting the above technical solution, the second fine sand filter can prevent impurities such as fine sand in the water flow from entering the drainage tank through the drainage pipe, thereby avoiding blockage.

[0021] Preferably, the bottom of the drainage pipe extends to the bottom of the energy dissipation pool, and the drainage pipe is made of PVC.

[0022] By adopting the above technical solution, the PVC drainage pipe can effectively prevent the drainage pipe from being damaged by corrosion and increase the service life of the drainage pipe.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The downstream water flow first enters the discharge pool body. The first energy dissipation block on the top surface of the discharge pool body first dissipates the water flow for the first time. In this process, part of the water flow passes through the flushing hole and the return pipe into the drainage pool body. The water flow after the first energy dissipation enters the energy dissipation pool body. Several energy dissipation sills on the top surface of the energy dissipation pool body dissipate the energy of the incoming water flow for the second time. At the same time, the water inside the energy dissipation pool flows into the drainage pool body at the bottom through the drainage pipe. The water flow in the energy dissipation pool body passes through the guard tank. The second energy dissipation plate on the top surface of the guard tank dissipates the water flow again. At the same time, part of the water flow on the guard tank passes through the back suction hole and the return pipe into the drainage pool body. When the water flows into the bottom drainage pool body, it collides with the inner wall of the bottom drainage pool body to dissipate energy. The gentle water flow after energy dissipation is discharged through the sill on the guard tank and the drainage pool body at the bottom of the energy dissipation pool;

[0025] 2. After the first energy dissipation, the water flows into the first branch pipe through the punching hole, and then into the main pipe through the first branch pipe. Then, the water flows through the energy dissipation pool and the guard tank to dissipate energy. After the energy dissipation, the water flows into the second branch pipe through the back suction hole on the guard tank, and then into the main pipe through the second pipe. The water in the main pipe flows into the drainage pool through the third branch pipe. The punching holes correspond to the first pipe one-to-one, and the back suction holes correspond to the second pipe one-to-one. This can assist in dissipating the energy of the water flow to the greatest extent, and can also protect the structure of the energy dissipation pool to a certain extent.

[0026] 3. The concave-convex structure design on the first and second energy dissipation plates helps to increase the contact area between the water flow and the energy dissipation plates, significantly improves the energy dissipation efficiency of the water flow, effectively reduces the scouring force of the water flow on the riverbed, and further dissipates the energy of the water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an underflow energy dissipation structure of an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the internal structure of an underflow energy dissipation structure of an embodiment of the present application.

[0029] Figure 3 yes Figure 1 Enlarged schematic diagram of point A in the middle.

[0030] Figure 4 yes Figure 1 Enlarged schematic diagram of point B in the middle.

[0031] Figure 5 yes Figure 2 Enlarged schematic diagram at point C in the middle.

[0032] Reference numerals:

[0033] 1. Discharge pool body; 11. First energy dissipation plate; 111. First fine sand filter; 12. Counter-punch hole; 2. Energy dissipation pool body; 21. Energy dissipation sill; 22. Drain pipe; 221. Second fine filter; 3. Tank guard; 31. Energy dissipation threshold; 32. Second energy dissipation plate; 321. Concave-convex structure; 33. Backflow hole; 4. Return pipe; 41. First branch pipe; 42. Second branch pipe; 43. Main pipe; 44. Third branch pipe; 5. Drainage pool body. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] The embodiment of the present application discloses a bottom flow energy dissipation structure. Figure 1A bottom flow energy dissipation structure includes a discharge tank body 1, which is arranged horizontally, and an energy dissipation tank body 2 is arranged at the right end of the discharge tank body 1. The energy dissipation tank body 2 is arranged horizontally, and the energy dissipation tank body 2 is fixedly connected to the discharge tank body 1. A drainage tank body 5 is arranged at the bottom of the energy dissipation tank body 2. A guard tank 3 is arranged at the right end of the energy dissipation tank body 2, and the guard tank 3 is arranged horizontally, and the guard tank 3 is fixedly connected to the energy dissipation tank body 2, and a force dissipation threshold 31 is arranged on the guard tank 3. A plurality of first energy dissipation plates 11 are arranged on the top of the discharge tank body 1, and the first energy dissipation plates 11 are arranged obliquely, and the first energy dissipation plates 11 are fixedly connected to the top surface of the discharge tank body 1. A second energy dissipation plate 32 is arranged on the top of the guard tank 3, and the second energy dissipation plate 32 is arranged obliquely, and the second energy dissipation plate 32 is fixedly connected to the top surface of the guard tank 3. The outer surfaces of the first energy dissipation plates 11 and the second energy dissipation plates 32 are both provided with concave and convex structures 321. The first energy dissipation plate 11 and the second energy dissipation plate 32 can dissipate energy of the water entering the discharge pool 1 and the apron 3, and the concave-convex structure 321 can increase the contact area between the water flow and the first energy dissipation plate 11 and the second energy dissipation plate 32, thereby further dissipating energy of the water flow.

[0036] Reference Figure 2 A return pipe 4 is provided on the drainage tank body 1, and the return pipe 4 includes a first branch pipe 41, a second branch pipe 42, a main pipe 43 and a third branch pipe 44. The first branch pipe 41 is vertically arranged, and the first branch pipe 41 is provided with several groups, and the first branch pipe 41 is arranged in the drainage tank body 1. The second branch pipe 42 is vertically arranged, and the second branch pipe 42 is provided with several groups, and the second branch pipe 42 is arranged in the slope protection. The main pipe 43 is horizontally arranged, and the main pipe 43 is respectively connected to the first branch pipe 41 and the second branch pipe 42. The third branch pipe 44 is horizontally arranged, and the third branch pipe 44 is provided with several groups. One end of the third branch pipe 44 is connected to the main pipe 43, and the other end of the third branch pipe 44 is connected to the drainage tank body 5.

[0037] Reference Figure 1 、 Figure 3 、 Figure 4 A first fine sand filter 111 is provided at the top of each of the punching holes 12 and the back-suction holes 33. Several groups of first fine sand filters 111 are provided, each fixedly connected to the first branch pipe 41 and the second pipe. The return pipe 4 directs a portion of the water flow into the drainage tank body 5 during the energy dissipation process. The provision of the return pipe 4 can maximize the energy dissipation of the water flow while also protecting the structure of the energy dissipation tank to a certain extent.

[0038] Reference Figure 2 、 Figure 5A plurality of energy dissipation ridges 21 are provided on the top of the energy dissipation pool body 2. The energy dissipation ridges 21 are arranged horizontally. The energy dissipation ridges 21 are evenly spaced on the top of the energy dissipation pool body 2. The energy dissipation ridges 21 are fixedly connected to the top of the energy dissipation pool body 2. A plurality of drain pipes 22 are provided on the energy dissipation pool body 2. The drain pipes 22 are arranged vertically. The drain pipes 22 are connected to the interior of the drainage pool body 5. A second fine sand filter net is provided on the drain pipe 22. The second fine sand filter net is fixedly connected to the drain pipe 22. The energy dissipation ridges 21 can dissipate energy of the water flow entering the energy dissipation pool body 2 again, and the drain pipe 22 can assist in dissipating energy of the water flow. The second fine sand filter net can prevent impurities such as fine sand in the water flow from entering the drainage pool body 5 through the drain pipe 22 to avoid blockage.

[0039] The implementation principle of the underflow energy dissipation structure of the embodiment of the present application is as follows: when the downstream water flows through the drainage tank body 1, the first energy dissipation block on the top surface of the drainage tank body 1 first dissipates the water's energy. At this time, part of the water flows through the first fine sand filter 111, flows through the first branch pipe 41, reaches the main pipe 43, and then flows through the main pipe 43 through the third branch pipe 44 into the drainage tank body 5. The water after the initial energy dissipation then enters the energy dissipation tank body 2. The several energy dissipation steps 21 on the top surface of the energy dissipation tank body 2 dissipate the incoming water's energy for the second time. At the same time, the water inside the energy dissipation tank flows through the second fine filter 221, flows through the drain pipe 22, and reaches the drainage tank body 5 at the bottom.

[0040] After the second energy dissipation, the water flows through the apron 3, where the second energy dissipation block dissipates the water's energy again. At this time, part of the water flows through the first fine sand filter 111, flows through the second branch pipe 42, and reaches the main pipe 43. Then, it flows through the main pipe 43 and into the drainage pool 5 through the third branch pipe 44. The water in the drainage pool 5 collides with the inner wall of the bottom drainage pool 5 to dissipate energy again. After energy dissipation, the gentle water flows through the energy dissipation ridge 21 on the apron 3 and the drainage pool 5 at the bottom of the energy dissipation pool 2 and is discharged.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An underflow energy dissipation structure, comprising a discharge pool body (1) arranged in sequence along the water flow direction, an energy dissipation pool body (2) arranged at the right end of the discharge pool body (1), a guard tank (3) arranged at the right end of the energy dissipation pool body (2), and a force dissipation threshold (31) arranged on the guard tank (3), characterized in that: The top of the discharge pool body (1) is provided with a plurality of first energy dissipation plates (11), the top of the energy dissipation pool body (2) is provided with a plurality of energy dissipation steps (21), the bottom of the inner wall of the energy dissipation pool body (2) is provided with a plurality of drainage pipes (22), the top of the guard tank (3) is provided with a plurality of second energy dissipation plates (32), the discharge pool body (1) is provided with a plurality of counter-punching holes (12), the guard tank (3) is provided with a plurality of back-suction holes (33), the discharge pool body (1) is provided with a return pipe (4) for discharge, the counter-punching holes (12) and the back-suction holes (33) are connected to the return pipe (4), the bottom of the energy dissipation pool body (2) is provided with a drainage pool body (5), and the return pipe (4) is connected to the drainage pool body (5).

2. The underflow energy dissipation structure according to claim 1, characterized in that: The return pipe (4) comprises a first branch pipe (41) connected to the counter-punching hole (12), a second branch pipe (42) connected to the back-suction hole (33), a main pipe (43) connecting the first branch pipe (41) and the second branch pipe (42), and a third branch pipe (44) connected to the drainage tank body (5).

3. The underflow energy dissipation structure according to claim 2, characterized in that: The tops of the punching holes (12) and the back-suction holes (33) are both provided with first fine sand filter nets (111), and the first fine sand filter nets (111) are fixedly connected to the top surfaces of the first branch pipe (41) and the second branch pipe (42), respectively.

4. The underflow energy dissipation structure according to claim 1, characterized in that: The outer surfaces of the first energy dissipation plate (11) and the second energy dissipation plate (32) are provided with concave-convex structures (321).

5. The underflow energy dissipation structure according to claim 1, characterized in that: The first energy dissipation plate (11) and the second energy dissipation plate (32) are made of high-strength composite material.

6. The underflow energy dissipation structure according to claim 1, characterized in that: The surfaces of the first energy dissipation plate (11) and the second energy dissipation plate (32) are coated with a polymer wear-resistant material.

7. The underflow energy dissipation structure according to claim 1, characterized in that: A second fine sand filter is provided at the top of the drainage pipe (22).

8. The underflow energy dissipation structure according to claim 1, characterized in that: The bottom of the drainage pipe (22) extends to the bottom of the energy dissipation tank (2), and the material of the drainage pipe (22) is PVC.

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