Dam flood drainage power generation device and power generation method

Abstract

According to the dam flood drainage power generation device and method, a propeller and a power generator are arranged in water flow, kinetic energy of the water flow can be directly captured and utilized, the kinetic energy is converted into electric energy, secondary utilization of water resources is achieved, a supporting frame serves as a base body of the dam flood drainage power generation device, disassembly is convenient, arrangement is flexible, and the dam flood drainage power generation device is convenient to use. Flexible configuration and adjustment are conducted according to the specific dam terrain, water flow conditions and power generation requirements, the floating units are arranged, the positions of the floating units can be automatically adjusted according to rising or falling of the water level, it is ensured that the propellers are always kept at the optimal water flow impact positions, and the fixing units provide stable support; according to the device, power generated by hydraulic power during flood discharge can be utilized to the maximum extent, the arrangement position of the device can be adjusted at any time according to the flood discharge condition, water resources are utilized to the maximum extent, and the power generation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of power generation equipment and relates to a dam flood discharge power generation device and a power generation method. Background Art

[0002] When flood discharge occurs, water flows rapidly downstream and generates gravitational potential energy in the process. This gravitational potential energy is the energy of water flow due to height difference. As water flows to lower places, gravitational potential energy can be converted into kinetic energy. In some large hydropower stations or reservoirs, attempts have been made to use flood discharge water to generate electricity. By building special flood discharge power generation facilities or transforming existing power generation equipment, an organic combination of flood discharge and power generation can be achieved.

[0003] However, during flood discharge, the water flow is fast, large and unstable, and sometimes it is impossible to accurately and maximally drive the power generation equipment, resulting in the power generation equipment being unable to play its maximum role. In addition, due to the instability of flood discharge flow, its energy conversion efficiency may be relatively low, and sometimes it is necessary to establish special facilities for flood discharge power generation, which requires a high investment cost, including equipment purchase, installation and commissioning, operation and maintenance, etc., and a lot of manpower and material resources need to be invested in the early stage. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the water flow speed is fast, the flow rate is large and unstable during flood discharge, and sometimes the power generation equipment cannot be driven accurately and maximally, resulting in the power generation equipment being unable to play the maximum role and causing waste of water resources. A dam flood discharge power generation device and a power generation method are provided.

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

[0006] A dam flood discharge power generation device comprises a support frame, on which a plurality of generators are arranged, and a propeller is arranged at the driving end of each generator;

[0007] The support frame is connected to the floating unit, and the floating unit is connected to the fixing unit;

[0008] When the flood water flows down, it hits the propeller, which rotates and drives the generator to generate electricity.

[0009] Furthermore, in the present invention, the floating unit includes two buoys arranged opposite to each other along the supporting frame.

[0010] Furthermore, in the present invention, the buoy comprises an outer shell, and the interior of the outer shell is filled with foam material.

[0011] Furthermore, in the present invention, a concave-convex texture is provided on the surface of the shell.

[0012] Furthermore, in the present invention, the concavo-convex texture is in a linear, grid-like or diamond-shaped structure.

[0013] Furthermore, in the present invention, a non-slip coating is provided on the surface of the shell.

[0014] Furthermore, in the present invention, the fixing unit includes a fixing anchor, and the fixing anchor is connected to the buoy via a connecting rope.

[0015] Furthermore, in the present invention, a fixing ring is provided on the buoy, and the connecting rope is connected to the fixing ring.

[0016] Furthermore, in the present invention, the support frame includes a plurality of support rods distributed in parallel, and a plurality of generators are distributed at intervals on each of the support rods;

[0017] The buoys are arranged at both ends of the supporting rod.

[0018] A dam flood discharge power generation method comprises the following steps:

[0019] Place the support frame where the water falls during flood discharge;

[0020] When flood discharge begins, the water flow drives the propeller to rotate, and the propeller transmits power to the generator;

[0021] The generator converts mechanical energy into electrical energy and transmits the electrical energy to the power grid or energy storage device.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention discloses a dam flood discharge power generation device. By arranging a propeller and a generator in the water flow, the kinetic energy of the water flow can be directly captured and utilized, and converted into electrical energy, thereby realizing the secondary utilization of water resources. The device uses a support frame as a base, is easy to disassemble, and is flexible to arrange. It can be flexibly configured and adjusted according to the specific dam terrain, water flow conditions, and power generation needs. The device is equipped with a floating unit, which can automatically adjust its position according to the rise or fall of the water level to ensure that the propeller always remains in the optimal water flow impact position. The fixed unit provides stable support to prevent the device from being offset or overturned under the impact of strong water flow. The power generated by the water during flood discharge can be maximized, and the layout of the device can be adjusted at any time according to the flood discharge situation, thereby realizing the maximum utilization of water resources, reducing resource waste, and improving power generation efficiency.

[0024] Furthermore, in the present invention, the floating unit includes two buoys relatively arranged along the support frame. The two buoys are relatively arranged to form a stable balance structure, so that the device can remain relatively stable in a complex water flow environment, reducing the shaking and tilting caused by the impact of the water flow, thereby ensuring that the generator can operate continuously and stably, and the relative arrangement of the two buoys can also have a certain guiding effect on the water flow, so that the water flow impacts the propeller more concentratedly, increasing the force area and force uniformity of the propeller, thereby improving the rotation efficiency of the propeller and the output power of the generator.

[0025] Furthermore, in the present invention, the float includes an outer shell, the interior of which is filled with foam material. The outer shell serves as a protective layer for the float to prevent the internal foam material from being eroded. The foam material is evenly filled inside the outer shell, ensuring that all parts of the float have a uniform buoyancy distribution, which helps to maintain the balance of the device in the water and further improves its stability.

[0026] Furthermore, in the present invention, the surface of the shell is provided with a concave-convex texture, which can change the flow mode of water on the surface of the buoy and reduce the generation of eddies and turbulence. This helps the water flow to flow through the buoy more smoothly, reduces the impact and vibration on the propeller and the generator caused by the unstable water flow, thereby improving the power generation efficiency, and the concave-convex texture can also have a certain guiding effect on the water flow, so that the water flow can impact the propeller more concentratedly, thereby improving the power generation efficiency.

[0027] Furthermore, in the present invention, an anti-skid coating is provided on the surface of the housing, which can reduce the risk of damage caused by sliding or collision of the device, and reduce the wear of the housing surface due to external factors such as water flow scouring, particle friction, etc. This helps to maintain the smoothness and integrity of the housing and extend its service life.

[0028] Furthermore, in the present invention, the fixing unit includes a fixed anchor, which is connected to the buoy through a connecting rope, thereby preventing the buoy from drifting and shaking under the impact of water flow, ensuring that the buoy can continuously and stably support the power generation device, reducing the risk of damage or overturning due to external force, and ensuring that it can operate normally in various environments. In addition, by adjusting the length of the connecting rope and the burial depth of the fixed anchor, it can adapt to the use requirements under different water depth conditions.

[0029] Furthermore, in the present invention, a fixing ring is provided on the buoy, and the connecting rope is connected to the fixing ring. The fixing ring serves as a connecting point between the connecting rope and the buoy, which has higher stability and reduces the risk of falling off or breaking due to loose connection.

[0030] Furthermore, in the present invention, the support frame includes a plurality of support rods distributed in parallel, a plurality of generators are distributed at intervals on each support rod, buoys are arranged at both ends of the support rods, and the generators are distributed at intervals on the support rods, so that the water flow can more fully impact the blades or turbines of the generators, thereby improving the utilization rate of the water flow and the power generation efficiency. In addition, by adjusting the length of the support rods and the buoyancy of the buoys, it can adapt to the use requirements under different water depth conditions.

[0031] A dam flood discharge and power generation method, by arranging propellers and generators in the water flow, can directly capture and utilize the kinetic energy of the water flow, convert it into electrical energy, and realize the secondary utilization of water resources. The device uses a support frame as a base, is easy to disassemble, and has flexible layout. It can be flexibly configured and adjusted according to the specific dam terrain, water flow conditions and power generation needs, and is equipped with a floating unit. The floating unit can automatically adjust its position according to the rise or fall of the water level to ensure that the propeller always remains in the optimal water flow impact position. The fixed unit provides stable support to prevent the device from being offset or overturned under the impact of strong water flow. The device can maximize the use of the power generated by the water during flood discharge, and the layout of the device can be adjusted at any time according to the flood discharge situation, thereby maximizing the use of water resources and improving power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 It is a structural schematic diagram of the present invention;

[0034] Figure 2 It is a schematic diagram of the working principle of the present invention.

[0035] Among them: 1-water storage; 2-dam; 3-hole; 4-connecting rope; 5-fixed anchor; 6-propeller; 7-rotating shaft; 8-generator; 9-support frame; 10-buoy. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0043] See also Figure 1 to Figure 2The embodiment of the present invention discloses a dam flood discharge power generation device, wherein a propeller 6 is installed at one end of a shaft of a generator 8, and a plurality of such generators are installed and fixed on a support frame 9 in an array, and a floating hole 10 is fixed at each end of the support frame 9, and two connecting ropes 4 are tied to each buoy 10, a total of four ropes, which are respectively connected to four fixed anchors 5 in a water pool, and the lead-out wires of the generator are led out in parallel or in series. When flood discharge occurs, the water flow impacts the propeller 6, causing the propeller 6 to rotate, driving the generator shaft and rotor to generate electricity, thereby forming a dam flood discharge power generation device.

[0044] Furthermore, the embodiment of the present invention includes the following structure:

[0045] Example 1

[0046] See also Figure 1 The present embodiment discloses a dam flood discharge power generation device, including a support frame 9, on which a plurality of generators 8 are arranged, and a propeller 6 is arranged at the driving end of each generator 8; the support frame 9 is connected to a floating unit, and the floating unit is connected to a fixed unit; when the flood discharge water flows down, the water flow impacts the propeller 6, and the propeller 6 rotates to drive the generator 8 to generate electricity.

[0047] Furthermore, in the embodiment of the present invention, the propeller 6 is fixed on the rotating shaft 7 of the generator 8. Specifically, the propeller 6 and the generator 8 are fixed by means of threads, keyways or pins.

[0048] In the embodiment of the present invention, by arranging a propeller and a generator in the water flow, the kinetic energy of the water flow can be directly captured and utilized, and converted into electrical energy, thereby realizing the secondary utilization of water resources. The device uses a support frame as a base, is easy to disassemble, and is flexible in layout. It can be flexibly configured and adjusted according to the specific dam terrain, water flow conditions, and power generation needs, and is equipped with a floating unit. The floating unit can automatically adjust its position according to the rise or fall of the water level to ensure that the propeller always remains in the optimal water flow impact position. The fixed unit provides stable support to prevent the device from shifting or overturning under the impact of strong water flow. The device can maximize the use of the power generated by water during flood discharge, and the layout of the device can be adjusted at any time according to the flood discharge situation, thereby maximizing the use of water resources and improving power generation efficiency.

[0049] Example 2

[0050] The present embodiment discloses a dam flood discharge power generation device, including a support frame 9, on which a plurality of generators 8 are arranged, and a propeller 6 is arranged at the driving end of each generator 8; the support frame 9 is connected to a floating unit, and the floating unit is connected to a fixed unit; when the flood discharge water flows down, the water flow impacts the propeller 6, and the propeller 6 rotates to drive the generator 8 to generate electricity, and the floating unit includes two pontoons 10 arranged relatively along the support frame 9.

[0051] Furthermore, in the embodiment of the present invention, the buoys 10 are installed and fixed at both ends of the support frame 9, and the two buoys 10 are installed symmetrically to help maintain the balance and stability of the support frame on the water surface.

[0052] Furthermore, in the embodiment of the present invention, the installation position of the float 10 can also be adjusted according to the buoyancy requirements of the device. In areas with faster water flow, the float 10 can be installed closer to the middle of the support frame 9 to increase the stability and impact resistance of the device.

[0053] Furthermore, in the embodiment of the present invention, the number and position of the floats can be adjusted according to the buoyancy requirements of the device, which can ensure that the entire device maintains sufficient buoyancy on the water surface to cope with changes under different water levels and flow conditions.

[0054] In this embodiment, the buoys form a stable balancing structure, which enables the device to remain relatively stable in a complex water flow environment and reduce the shaking and tilting caused by the impact of the water flow, thereby ensuring that the generator can operate continuously and stably. The relative arrangement of the two buoys can also have a certain guiding effect on the water flow, so that the water flow impacts the propeller more concentratedly, increasing the force area and force uniformity of the propeller, thereby improving the rotation efficiency of the propeller and the output power of the generator.

[0055] Example 3

[0056] The present embodiment discloses a dam flood discharge power generation device, including a support frame 9, on which a plurality of generators 8 are arranged, and a propeller 6 is arranged at the driving end of each generator 8; the support frame 9 is connected to a floating unit, and the floating unit is connected to a fixed unit; when the flood discharge water flows down, the water flow impacts the propeller 6, and the propeller 6 rotates to drive the generator 8 to generate electricity, and the floating unit includes two buoys 10 arranged relatively along the support frame 9, and the buoy 10 includes an outer shell, and the inside of the outer shell is filled with foam material.

[0057] Furthermore, in the embodiment of the present invention, the shell as an external protective layer can be made of high-density polyethylene, polypropylene or fiberglass, so that the shell has good weather resistance, impact resistance and corrosion resistance, and can be used for a long time in an aquatic environment without being damaged.

[0058] Furthermore, in the embodiment of the present invention, the outer shell may be a rectangular, cylindrical or elliptical cylindrical structure, which is conducive to providing uniform buoyancy and stability.

[0059] Furthermore, in the embodiment of the present invention, the outer shell and the support frame 9 can be fixed by bolt connection or welding to ensure that the buoy will not fall off or be damaged.

[0060] Furthermore, in an embodiment of the present invention, the foam material filled inside the outer shell is specifically polyurethane foam, copolymer foam or composite foam material, which prevents the internal foam material from being eroded. The foam material is evenly filled inside the outer shell, ensuring that all parts of the float have a uniform buoyancy distribution, which helps to maintain the balance of the device in the water and further improves its stability.

[0061] Example 4

[0062] The present embodiment discloses a dam flood discharge power generation device, comprising a support frame 9, on which a plurality of generators 8 are arranged, and a propeller 6 is arranged at the driving end of each generator 8; the support frame 9 is connected to a floating unit, and the floating unit is connected to a fixed unit; when the flood discharge water flows down, the water flow impacts the propeller 6, and the propeller 6 rotates to drive the generator 8 to generate electricity, and the floating unit comprises two buoys 10 arranged relatively along the support frame 9, and the buoy 10 comprises an outer shell, the interior of the outer shell is filled with foam material, and the surface of the outer shell is provided with a concave and convex texture.

[0063] Furthermore, in the embodiment of the present invention, the concave-convex texture is in a linear, grid-like or diamond-shaped structure, wherein the linear texture helps to increase the contact area between the buoy shell and the surrounding fluid, and improves the stability of the buoy in the water flow; the grid-like texture is composed of a series of criss-crossing straight lines, which can increase the contact area between the surface and the water flow, reduce the impact, and disperse the force of the water flow in multiple directions, further improving the stability and durability of the buoy. In addition, the grid-like texture may also have a certain drainage function, which helps to prevent water accumulation on the surface of the buoy.

[0064] Furthermore, in the embodiment of the present invention, the diamond structure can effectively disperse the impact force of the water flow on the buoy and reduce the local stress concentration phenomenon.

[0065] The setting of the concave and convex texture helps the water flow through the buoy more smoothly, reducing the impact and vibration on the propeller and generator caused by unstable water flow, thereby improving the power generation efficiency. The concave and convex texture can also have a certain guiding effect on the water flow, allowing the water flow to impact the propeller more concentratedly, thereby improving the power generation efficiency.

[0066] Example 5

[0067] The present embodiment discloses a dam flood discharge power generation device, comprising a support frame 9, on which a plurality of generators 8 are arranged, and a propeller 6 is arranged at the driving end of each generator 8; the support frame 9 is connected to a floating unit, and the floating unit is connected to a fixed unit; when the flood discharge water flows down, the water flow impacts the propeller 6, and the propeller 6 rotates to drive the generator 8 to generate electricity, and the floating unit comprises two buoys 10 arranged relatively along the support frame 9, and the buoy 10 comprises an outer shell, the interior of the outer shell is filled with foam material, and an anti-slip coating is arranged on the surface of the outer shell.

[0068] Furthermore, in the embodiment of the present invention, the anti-slip coating may be an epoxy resin coating, a polyurethane coating, an acrylate coating or a fluorocarbon coating.

[0069] In the embodiments of the present invention, the anti-skid coating can reduce the risk of damage caused by sliding or collision of the device, and reduce the wear on the surface of the housing due to external factors such as water scouring, particle friction, etc. This helps to maintain the smoothness and integrity of the housing and extend its service life.

[0070] Example 6

[0071] The present embodiment discloses a dam flood discharge power generation device, comprising a support frame 9, on which a plurality of generators 8 are arranged, and a propeller 6 is arranged at the driving end of each generator 8; the support frame 9 is connected to a floating unit, and the floating unit is connected to a fixed unit; when the flood discharge water flows down, the water flow impacts the propeller 6, and the propeller 6 rotates to drive the generator 8 to generate electricity, and the fixed unit comprises a fixed anchor 5, and the fixed anchor 5 is connected to a buoy 10 through a connecting rope 4, and a fixing ring is arranged on the buoy 10, and the connecting rope 4 is connected to the fixing ring.

[0072] Furthermore, in the embodiment of the present invention, a fixing ring is provided on the fixing anchor 5, which is connected to the corresponding two fixing rings through the connecting rope 4. The fixing ring serves as a connection point between the fixing anchor 5 and the buoy, which has higher stability and reduces the risk of falling off or breaking due to loose connection.

[0073] Furthermore, in the embodiment of the present invention, the connecting rope 4 can be a nylon rope, a polyester rope, a steel wire rope or a stainless steel chain.

[0074] Furthermore, in the embodiment of the present invention, the diameter and strength of the connecting rope 4 should be selected according to the specific load requirements to ensure that it will not break or over-elongate during use.

[0075] Furthermore, in the embodiment of the present invention, the fixing anchor 5 is made of stainless steel or alloy steel, and the shape of the fixing anchor 5 can be a weight type, an umbrella type or a spiral type to ensure stability under the scouring of water flow and sediment.

[0076] In this embodiment, the fixed anchor is connected to the buoy through a connecting rope, which prevents the buoy from drifting and shaking under the impact of water flow, ensures that the buoy can continuously and stably support the power generation device, reduces the risk of damage or capsizing due to external forces, and ensures that it can operate normally in various environments. In addition, by adjusting the length of the connecting rope and the burying depth of the fixed anchor, it can adapt to the use requirements under different water depth conditions.

[0077] Example 7

[0078] The present embodiment discloses a dam flood discharge power generation device, including a support frame 9, on which a plurality of generators 8 are arranged, and a propeller 6 is arranged at the driving end of each generator 8; the support frame 9 is connected to a floating unit, and the floating unit is connected to a fixed unit; when the flood discharge water flows down, the water flow impacts the propeller 6, and the propeller 6 rotates to drive the generator 8 to generate electricity, the support frame 9 includes a plurality of parallel distributed support rods, and a plurality of generators 8 are distributed at intervals on each support rod; the buoys 10 are arranged at both ends of the support rods.

[0079] Furthermore, in the embodiment of the present invention, in order to ensure the stability of the device support, a reinforcing rod is provided between a plurality of parallel distributed support rods, and the reinforcing rod is distributed perpendicularly to the support rods.

[0080] Furthermore, in an embodiment of the present invention, when the device is placed, the direction of the support rods is distributed perpendicular to the direction of the water flow, so as to increase the stability of the device and reduce the impact force of the water flow on the support structure.

[0081] The generators are distributed at intervals on the support rods, so that the water flow can more fully impact the blades or turbines of the generators, thereby improving the utilization rate of the water flow and the power generation efficiency. In addition, by adjusting the length of the support rods and the buoyancy of the floats, it can adapt to the use requirements under different water depth conditions.

[0082] Example 8

[0083] See also Figure 2 This embodiment discloses a dam flood discharge power generation method, comprising the following steps: placing a support frame 9 at the water drop location during flood discharge; when flood discharge begins, the water flow drives the propeller 6 to rotate, and the propeller 6 transmits power to the shaft of the generator 8; the shaft of the generator 8 converts mechanical energy into electrical energy, and transmits the electrical energy to a power grid or an energy storage device.

[0084] Specifically, the support frame 9 is placed downstream of the dam 2, and a hole 3 is opened on the dam 2. The stored water 1 upstream of the dam 2 is discharged through the hole 3.

[0085] During the flood discharge process of the dam, this method makes full use of the water flow power that would otherwise be wasted, drives the propeller 6 to rotate, and then drives the generator 8 to generate electricity. This method effectively converts the abundant hydropower resources in nature into electrical energy, improving energy utilization efficiency. The electrical energy generated by the generator 8 is transmitted to the power grid or energy storage equipment, which can provide a stable power supply for the power grid. During the low-peak period of the power grid load, this electrical energy can be used as a supplementary power source to relieve the pressure on the power grid and improve the stability and reliability of the power grid.

[0086] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dam flood discharge power generation device, characterized in that: It comprises a support frame (9), on which a plurality of generators (8) are arranged, and a propeller (6) is arranged at the driving end of each generator (8); The support frame (9) is connected to a floating unit, and the floating unit is connected to a fixing unit; When the flood water flows down, the water impacts the propeller (6), the propeller (6) rotates and drives the generator (8) to generate electricity.

2. A dam flood discharge power generation device according to claim 1, characterized in that: The floating unit comprises two buoys (10) arranged opposite to each other along a supporting frame (9).

3. A dam flood discharge power generation device according to claim 2, characterized in that: The buoy (10) comprises an outer shell, the interior of which is filled with foam material.

4. A dam flood discharge power generation device according to claim 3, characterized in that: The shell surface is provided with a concave-convex texture.

5. A dam flood discharge power generation device according to claim 4, characterized in that: The concavo-convex texture is in a linear, grid-like or diamond-shaped structure.

6. A dam flood discharge power generation device according to claim 3, characterized in that: The surface of the shell is provided with an anti-slip coating.

7. A dam flood discharge power generation device according to claim 1, characterized in that: The fixing unit comprises a fixing anchor (5), and the fixing anchor (5) is connected to the buoy (10) via a connecting rope (4).

8. A dam flood discharge power generation device according to claim 7, characterized in that: A fixing ring is provided on the buoy (10), and the connecting rope (4) is connected to the fixing ring.

9. A dam flood discharge power generation device according to claim 2, characterized in that: The support frame (9) comprises a plurality of support rods distributed in parallel, and a plurality of generators (8) are distributed at intervals on each of the support rods; The buoys (10) are arranged at both ends of the support rod.

10. A dam flood discharge power generation method, characterized in that: The following steps are involved: Placing the support frame (9) at the place where water falls during flood discharge; When flood discharge begins, the water flow drives the propeller (6) to rotate, and the propeller (6) transmits power to the generator (8); The generator (8) converts mechanical energy into electrical energy and transmits the electrical energy to a power grid or an energy storage device.

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