Energy dissipation structure of reservoir spillway outlet

Abstract

The utility model discloses an energy dissipation structure of a reservoir spillway outlet, which comprises a circulation groove, a plurality of steps are arranged in the circulation groove, a water accumulation groove is arranged on the steps, and an energy dissipation component is arranged on the water accumulation groove. And the energy dissipation assembly comprises a rotating rod rotationally connected with the inner wall of the circulation groove, a plurality of stirring plates arranged in a surrounding mode are fixedly connected to the rotating rod, a plurality of circulation openings are formed in the side wall of the water accumulation groove, and an extension plate is fixedly connected to the upper end of the step groove. According to the energy dissipation device, the energy dissipation assembly is arranged, the circulation openings are matched with the flow guide plates, so that water flow impacts the stirring plates located above the rotating rod and the stirring plates located below the rotating rod when flowing, then the rotating resistance of the rotating rod is increased, opposite impact is conducted through the impact force of the water flow, and the kinetic energy of the water flow is effectively consumed; and water accumulated in the water accumulation groove can be utilized to reduce the scouring of water flow to the step, so that the service life of the energy dissipation structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy equipment, in particular to an energy dissipation structure at a reservoir spillway outlet. Background Art

[0002] The spillway is a flood control device for water conservancy structures such as reservoirs. It is usually built on one side of the dam, like a large trough. When the water level in the reservoir exceeds the safety limit, the water flows downstream from the spillway to prevent the dam from being destroyed. At the same time, the spillway is located at a high position. In order to avoid damage to the dam body caused by the impact force of the water flow, an energy dissipation structure needs to be set up to reduce the impact force of the water flow.

[0003] In an energy dissipation structure for a reservoir spillway outlet disclosed in my country's utility model patent CN221895723U, a rotating rod is used to consume water flow power, and a vertical shaft is used for air seepage. However, this design has the problem of poor durability and requires regular maintenance. At the same time, equipment installed in an outdoor environment is prone to dust and impurities getting stuck in the transmission parts, causing them to get stuck and lose the air seepage effect. Therefore, we propose an energy dissipation structure for a reservoir spillway outlet to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the prior art and to propose an energy dissipation structure for a reservoir spillway outlet.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An energy dissipation structure for a reservoir spillway outlet comprises a flow trough, a plurality of steps are provided in the flow trough, a water accumulation trough is provided on the steps, and an energy dissipation assembly is provided on the water accumulation trough;

[0007] The energy dissipation component includes a rotating rod rotatably connected to the inner wall of the circulation groove, a plurality of dial plates are fixedly connected to the rotating rod, a plurality of circulation openings are opened on the side wall of the water accumulation groove, and an extension plate is fixedly connected to the upper end of the step groove, the circulation opening and the extension plate are both arranged close to the dial plate, a vertical rod is also fixedly connected to one side of the water accumulation groove, a baffle is fixedly connected to the vertical rod, a plurality of guide plates are arranged on the side wall of the baffle close to the dial plate, and the lower end of the guide plate is fixedly connected to the extension rod.

[0008] Preferably, an extension pipe is provided on the side wall of the water trough close to the flow port, and guard plates are provided at both ends of the water trough.

[0009] Preferably, the shift plate is arc-shaped, and a curling edge is provided on one end of the shift plate away from the rotating rod.

[0010] Preferably, the extension tube is arranged at an angle, and the horizontal position of the end of the extension tube away from the water sump is lower than the horizontal position of the rotating rod.

[0011] Preferably, a gravel layer is provided at the bottom of the water collection tank, and the gravel particle size is greater than 10 mm.

[0012] Preferably, the horizontal position of the circulation port is higher than the horizontal position of the bottom surface of the water storage tank.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model provides an energy dissipation component and utilizes a flow port in conjunction with a guide plate, so that when the water flows, it impacts the paddle plates located above and below the rotating rod, thereby increasing the rotational resistance of the rotating rod. The impact force of the water flow itself is used for counteraction, effectively consuming the kinetic energy of the water flow. In addition, by providing a water trough, the water accumulated in the water trough can be used to reduce the scouring of the steps by the water flow, thereby increasing the service life of the energy dissipation structure.

[0015] 2. The utility model provides an arc-shaped paddle, which can make the water in the flow port hit the paddle and flow quickly along the paddle to the water trough, thereby bringing some air into the water, playing a certain role in air seepage and energy dissipation. By providing a gravel layer, the impact of the initial overflow of the spillway outlet can be protected against the impact of the initial overflow when the water trough is exhausted. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a side structural schematic diagram of an energy dissipation structure at a reservoir spillway outlet proposed by the present invention;

[0017] Figure 2 This is a schematic cross-sectional view of an energy dissipation structure at a reservoir spillway outlet proposed by the present invention;

[0018] Figure 3 This is a schematic diagram of the baffle structure of the energy dissipation structure of the reservoir spillway outlet proposed by the present invention;

[0019] Figure 4 for Figure 2 Schematic diagram of the enlarged structure of output A.

[0020] In the figure: 1. Flow trough; 2. Step; 3. Water trough; 4. Rotating rod; 5. Dial plate; 6. Extension plate; 7. Vertical rod; 8. Baffle; 9. Guide plate; 10. Extension rod; 11. Extension pipe; 12. Guard plate; 13. Curled edge; 14. Gravel layer. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1-3 , an energy dissipation structure of a reservoir spillway outlet, comprising a circulation trough 1, a plurality of steps 2 being provided in the circulation trough 1, a water trough 3 being provided on the steps 2, and an energy dissipation component being provided on the water trough 3;

[0023] In this design, the water trough 3 has a certain water storage capacity. The water at the bottom of the water trough 3 can not only reduce the impact of the water flow on the step 2, but also the water in this part does not participate in the flow, so that the scouring of the water flow on the step 2 surface is reduced, which can effectively increase the service life of the step 2.

[0024] The energy dissipation component includes a rotating rod 4 rotatably connected to the inner wall of the circulation groove 1, and a plurality of dial plates 5 are fixedly connected to the rotating rod 4. The side wall of the water trough 3 is provided with a plurality of circulation ports, and the upper end of the step 2 groove is fixedly connected to an extension plate 6. The circulation port and the extension plate 6 are both arranged close to the dial plate 5. The side wall of the water trough 3 close to the circulation port is provided with an extension pipe 11, and guard plates 12 are provided at both ends of the water trough 3. The extension pipe 11 is inclined, and the horizontal position of the extension pipe 11 away from the end of the water trough 3 is lower than the horizontal position of the rotating rod 4. A vertical rod 7 is also fixedly connected to one side of the water trough 3, and a baffle 8 is fixedly connected to the vertical rod 7. The baffle 8 is provided with a plurality of guide plates 9 on the side wall close to the dial plate 5, and the lower end of the guide plate 9 is fixedly connected to the extension rod 10.

[0025] In this design, when the reservoir spillway outlet overflows, the water flows along the circulation groove 1 and enters the water storage groove 3, and continues to flow to the next step 2 after the water storage groove 3 is full. In this process, part of the water flows through the circulation port to the dial plate 5, and the other part of the water flows along the extension plate 6 to the dial plate 5 after the water storage groove 3 is full. Since the two streams of water impact the dial plate 5 above and below the rotating rod 4 respectively, the rotation resistance of the rotating rod 4 is large, and the impact force of the water flow will offset each other. Regardless of whether the rotating rod 4 rotates under the drive of the water flow, and the specific rotation direction is clockwise or counterclockwise, the kinetic energy of the water flow can be effectively consumed and the impact force of the water flow is reduced. At the same time, this structure is simple, has low maintenance requirements, is suitable for use in outdoor scenes, and meets the energy dissipation requirements of the reservoir spillway outlet;

[0026] In addition, by setting the baffle 8, when the water flow is large, part of the water flow will flow to the baffle 8 after passing through the paddle 5 to reduce the impact, and then flow downward along the guide plate 9. The baffle 8 is mainly used to prevent part of the water flow from directly skipping the level (that is, the upper water flow is not blocked by the paddle 5, passes over the paddle 5, and directly skips part of the steps 2) and flowing downward when the water flow is too large, resulting in a falling water flow with a large impact force, thereby achieving a further energy dissipation effect.

[0027] Furthermore, the dial plate 5 is arc-shaped, and a curling edge 13 is provided on the end of the dial plate 5 away from the rotating rod 4;

[0028] In this design, the arc-shaped paddle plate 5 is provided, so that the water in the flow port can impact the paddle plate 5 and flow rapidly along the paddle plate 5 to the water trough 3, thereby bringing some air into the water, playing a certain role in air seepage and energy dissipation. The rolled edge 13 is provided to prevent the water from splashing upward when the water on the extension plate 6 flushes the paddle plate 5.

[0029] Furthermore, a gravel layer 14 is provided at the bottom of the water collection tank 3, and the gravel particle size is greater than 10 mm;

[0030] By setting up the gravel layer 14, the steps 2 can be protected from the impact of the initial overflow at the spillway outlet when the water storage tank 3 is exhausted. Gravel with a particle size greater than 10 mm has a large mass and is not easily carried away by the water flow.

[0031] Furthermore, the horizontal position of the flow port is higher than the horizontal position of the bottom surface of the water storage tank 3;

[0032] In this design, it is used to ensure that the bottom of the water trough 3 has a certain water storage capacity, ensuring that the water trough 3 can reduce the impact of water flow on the step 2, and this part of the water does not participate in the flow, so that the effect of water flow scouring the surface of the step 2 is reduced.

[0033] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An energy dissipation structure at a reservoir spillway outlet, comprising a flow channel (1), characterized in that: A plurality of steps (2) are provided in the circulation trough (1), a water trough (3) is provided on the steps (2), and an energy dissipation component is provided on the water trough (3); The energy dissipation component comprises a rotating rod (4) rotatably connected to the inner wall of the circulation groove (1); a plurality of dial plates (5) are fixedly connected to the rotating rod (4); a plurality of circulation openings are provided on the side wall of the water accumulating groove (3); an extension plate (6) is fixedly connected to the upper end of the step (2) groove; the circulation opening and the extension plate (6) are both arranged close to the dial plate (5); a vertical rod (7) is fixedly connected to one side of the water accumulating groove (3); a baffle (8) is fixedly connected to the vertical rod (7); a plurality of guide plates (9) are provided on the side wall of the baffle (8) close to the dial plate (5); and an extension rod (10) is fixedly connected to the lower end of the guide plate (9).

2. The energy dissipation structure of a reservoir spillway outlet according to claim 1, characterized in that: An extension pipe (11) is provided on the side wall of the water trough (3) close to the circulation port, and guard plates (12) are provided at both ends of the water trough (3).

3. The energy dissipation structure of a reservoir spillway outlet according to claim 1, characterized in that: The shift plate (5) is arc-shaped, and a curling edge (14) is provided at one end of the shift plate (5) away from the rotating rod (4).

4. The energy dissipation structure of a reservoir spillway outlet according to claim 2, characterized in that: The extension tube (11) is arranged obliquely, and the horizontal position of the end of the extension tube (11) away from the water trough (3) is lower than the horizontal position of the rotating rod (4).

5. The energy dissipation structure of a reservoir spillway outlet according to claim 1, characterized in that: A gravel layer (15) is provided at the bottom of the water collection tank (3), and the gravel particle size is greater than 10 mm.

6. The energy dissipation structure of a reservoir spillway outlet according to claim 2, characterized in that: The horizontal position of the flow opening is higher than the horizontal position of the bottom surface of the water collection tank (3).

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