River channel sectional type power generation equipment utilizing river water weight and lever force

Abstract

The invention relates to the technical field of hydroelectric power generation, and discloses a power generation form utilizing river water weight and lever force. Comprising a river weir main body, a hollow power generation chamber with an upstream river weir and a downstream river weir is built in a proper river channel, a water wheel is installed at an opening of the chamber of the river weir body (as shown in the figure) and installed on a bearing seat, the bearing seat is provided with a bearing shaft, and a gearbox is installed at the axis of the water wheel and connected with power generation equipment. The river weir main body is built, the upstream river weir is properly heightened, water flow is guided to flow into the water wheel water tank across the opening of the river weir, the water wheel is forced to rotate under the action of the weight of river water and lever force of the water tank and the axis, the axis can generate huge torque, and the speed is changed to a proper rotating speed through the gearbox to drive the generator to generate power. And water in the cambered surface water tank of the circular water wheel is discharged to the downstream at the position lower than the axis. And a plurality of power generation cofferdams can be manufactured in a stepped manner in case of a river with large fall.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment for hydropower generation, and particularly to a segmented river channel power generation device that utilizes the weight of river water and lever force. Background Technique

[0002] As the most mature and flexible renewable energy in terms of technology and scheduling, hydropower generation plays an irreplaceable role in China's energy system. Traditional hydropower development generally relies on the high dam and large reservoir model. However, this model not only requires huge investment and a long construction period, but also often affects the river ecosystem and geological environment. Therefore, the focus of current hydropower equipment development has gradually shifted towards low-head hydropower resources that cause less disturbance to the natural environment.

[0003] For low-head hydropower resources, existing development technologies mainly rely on improved traditional water turbines and require the construction of corresponding hydraulic structures. However, in order to obtain sufficient power generation under low flow velocity conditions, such technical solutions still require hydraulic structures such as intake gates, diversion walls, and tail water channels to concentrate the water flow and form a stable water head. This complex engineering structure not only leads to high construction costs and maintenance requirements, but also causes significant and continuous interference to the river hydrological regime. This makes it difficult to implement many small and medium-sized river channels with development potential due to concerns about engineering costs and ecological impacts, and a large amount of decentralized hydropower resources are thus left idle. For this reason, we propose a segmented river channel power generation device that utilizes the weight of river water and lever force. Summary of the Invention

[0004] The purpose of the present invention is to provide a segmented river channel power generation device that utilizes the weight of river water and lever force to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A segmented river channel power generation device that utilizes the weight of river water and lever force, including a river weir main body, the river weir main body is horizontally placed in the river channel, a bearing seat is fixedly arranged on the downstream side of the river weir main body, a receiving shaft is rotatably penetrated through the bearing seat, a driving water wheel is fixedly installed on the receiving shaft, a power generation device is also installed on the bearing seat, the input shaft of the power generation device is in transmission connection with the receiving shaft, the river weir main body is arranged in a "C" - shaped structure, the river weir main body includes a bearing base, a water retaining weir is fixedly installed on the upstream side of the bearing base, a water - passing weir top is fixedly installed on the top of the water retaining weir, and both the driving water wheel and the power generation device are installed in the space between the bearing base and the water - passing weir top.

[0006] Preferably, a water blocking weir is fixedly installed at the downstream end of the bearing base.

[0007] Preferably, the power generation equipment includes a speed change device and a generator. The input end of the speed change device is connected to the end of the receiving shaft via a universal coupling, and the input end of the generator is connected to the output end of the speed change device.

[0008] Preferably, the driving water turbine includes a mounting hub fixedly mounted on a receiving shaft, and the mounting hub has multiple water receiving grooves evenly distributed along its circumference.

[0009] Preferably, a water diversion assembly is also installed on one side of the mounting hub. The water diversion assembly includes a flow guide shroud, which is located on the top of the main body of the weir and has a V-shaped structure facing upstream.

[0010] Preferably, an interception mechanism is also installed on one side of the flow guide, the interception mechanism including a pollution-blocking grid installed on the upstream end of the flow guide.

[0011] Preferably, the flow guide cover is also equipped with a rotating frame on the downstream side, and a flow guide plate for guiding the water flow to the water receiving tank is rotatably connected to the rotating frame.

[0012] Preferably, an adjusting rod is rotatably mounted on the rotating frame, the guide plate is fixedly mounted on the adjusting rod, and a driving device is fixedly mounted on the rotating frame. The output end of the driving device is connected and fixedly connected to the end of the adjusting rod to drive its rotation.

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

[0014] This invention utilizes a weir structure, a drive turbine, and a power generation device. The weir structure elevates the water flow, creating a drop in elevation. This allows the water to be directed to flow over the weir and impact the drive turbine. The weight of the river water and the lever force between the drive turbine and its shaft force the turbine to rotate. The shaft generates a large torque, which in turn drives the power generation device to generate electricity. This eliminates the need for complex hydraulic structures such as intake gates, reducing construction costs and significantly minimizing interference with and occupation of the natural riverbed and aquatic habitats.

[0015] This invention, by setting up a water receiving trough and a water blocking weir, allows the installation hub to rotate after the water flow impacts the inside of the water receiving trough. The water receiving trough guides the water flow downstream, while the water blocking weir effectively prevents downstream water from rushing into the equipment installation space enclosed by the support base, the water blocking weir, and the top of the overflow weir. This keeps the environment at the power generation equipment relatively dry, creating safe and convenient conditions for daily inspection, maintenance, and fault repair of the equipment, and reducing the difficulty and cost of operation and maintenance.

[0016] This invention helps to gather water flow by setting a flow guide cover, and at the same time, by setting an adjustable flow guide plate, it can adapt to different flow rates and water level conditions, ensuring that the water flow impacts the water receiving tank at the optimal angle, thereby making full use of the weight and kinetic energy of the water flow and improving the energy capture and conversion efficiency. Attached Figure Description

[0017] Figure 1 A schematic diagram of a segmented power generation device for a river channel that utilizes the weight of river water and leverage.

[0018] Figure 2 This is a side view schematic diagram of the main structure of the weir in this invention;

[0019] Figure 3 This is a schematic diagram of the structure of multiple power generation devices combined in this invention;

[0020] Figure 4 This is a schematic diagram of the power generation equipment and the driving turbine in this invention;

[0021] Figure 5 This is a schematic diagram of the water diversion component in this invention;

[0022] Legend

[0023] In the diagram: 1. Main body of the weir; 101. Support base; 102. Water-blocking weir; 103. Water-passing weir top; 2. Mounting hub; 3. Support shaft; 4. Support seat; 5. Transmission device; 6. Water receiving trough; 7. Water diversion assembly; 701. Flow guide shroud; 702. Adjusting rod; 703. Trash screen; 704. Rotating frame; 705. Drive device; 706. Flow guide plate; 8. Generator; 9. Universal coupling; 10. Water-blocking weir. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1-5 The present invention provides a technical solution: a segmented power generation device for a river channel that utilizes the weight of river water and leverage force, including a weir body 1, which is placed horizontally in the river channel. A bearing seat 4 is fixedly installed on the downstream side of the weir body 1. A receiving shaft 3 is rotatably mounted on the bearing seat 4. A drive water turbine is fixedly installed on the receiving shaft 3. A power generation device is also installed on the bearing seat 4. The input shaft of the power generation device is connected to the receiving shaft 3 in a transmission manner.

[0026] Select a river course with perennial flowing water. During the dry season, use connecting steel piles to enclose a cylinder and fill it with sand in the middle, thereby temporarily separating the water flow on one side of the river course and creating dry working conditions for construction. Then pour the main body 1 of the river weir. After pouring, the river water flow is moderately raised and guided by the main body 1 of the river weir, and a concentrated downward water flow is formed from its top. The potential energy and weight of this water flow directly act on the driving water wheel to make it rotate. The driving water wheel transmits mechanical torque to the power generation equipment through the receiving shaft 3 and finally converts it into electrical energy. In this way, the complex water diversion buildings required by traditional low-head power stations are eliminated, the civil engineering work volume and cost are reduced, the construction period is shortened, and the continuous occupation and interference of the river course ecology are reduced, realizing the economic and environmental protection development of decentralized low-head resources.

[0027] In a preferred technical solution of this embodiment, please refer to Figure 1 and Figure 2 , the main body 1 of the river weir is arranged in a "匚" - shaped structure. The main body 1 of the river weir includes a bearing base 101. On the upstream side of the bearing base 101, a water retaining weir 102 is fixedly installed. On the top of the water retaining weir 102, a water - passing weir top 103 is fixedly installed. Both the driving water wheel and the power generation equipment are installed in the space between the bearing base 101 and the water - passing weir top 103. This integrated design not only has a stable structure and can effectively disperse the water flow impact force and equipment load, but also protects the core power generation components inside, reducing the erosion and interference of the external environment. At the same time, it greatly simplifies the on - site installation process.

[0028] At the downstream end of the bearing base 101, a water - blocking weir 10 is fixedly installed. The water - blocking weir 10 can intercept the downstream water flow, making the equipment installation space enclosed by the bearing base 101, the water - blocking weir 10 and the water - passing weir top 103 remain relatively dry, which is convenient for staff to carry out daily inspections, maintenance and fault repairs.

[0029] In a preferred technical solution of this embodiment, please refer to Figure 4 , the power generation equipment includes a speed - changing device 5 and a generator 8. The input end of the speed - changing device 5 is connected to the end of the receiving shaft 3 through a universal coupling 9, and the input end of the generator 8 is connected to the output end of the speed - changing device 5.

[0030] The driving water wheel includes an installation hub 2 fixedly installed on the receiving shaft 3. Along the circumferential direction of the installation hub 2, a plurality of water - receiving grooves 6 are evenly distributed. The water flow discharging from the top of the water - passing weir top 103 directly impacts into the water - receiving grooves 6. The water flow generates an impact on the water - receiving grooves 6, and this impact force forms a torque to drive the installation hub 2 to rotate. When a water - receiving groove 6 rotates through a specific angle, the water flow discharges, and the next water - receiving groove 6 continues to receive the water flow, thereby obtaining continuous and stable rotation power.

[0031] In a preferred technical solution of this embodiment, please refer to Figure 1 , Figure 2 and Figure 4 A water intake assembly 7 is also installed on one side of the hub 2. The water intake assembly 7 includes a guide shroud 701, which is set on the top of the weir body 1. The guide shroud 701 is set in a V-shape facing upstream. The V-shaped opening of the guide shroud 701 is similar to a funnel, which actively collects the dispersed water flow on the weir body 1 and gathers it to its outlet area to form a more concentrated and stable water column, which is then guided to drive the water turbine. This ensures that more water can accurately act on the drive water turbine, which can effectively improve the operating efficiency of the water turbine, especially when the water level is low or the flow rate is small.

[0032] Furthermore, an interception mechanism is also installed on one side of the flow guide 701. The interception mechanism includes a debris barrier 703 installed on the upstream end of the flow guide 701, which can effectively prevent debris from damaging or clogging the flow guide 701 and the water receiving tank 6, thereby ensuring the long-term reliable operation of the power generation equipment.

[0033] In the preferred embodiment of this technical solution, please refer to Figure 1 , Figure 4 and Figure 5 The flow guide cover 701 is also equipped with a rotating frame 704 facing downstream, and a flow guide plate 706 for guiding the water flow to the water receiving tank 6 is rotatably connected to the rotating frame 704.

[0034] Furthermore, an adjusting rod 702 is rotatably mounted on the rotating frame 704, a guide plate 706 is fixedly mounted on the adjusting rod 702, and a driving device 705 is fixedly mounted on the rotating frame 704. The output end of the driving device 705 is connected and fixed to the end of the adjusting rod 702 to drive it to rotate. The driving device 705 is a rotary driving device such as an electric motor or a servo motor.

[0035] After the drive unit 705 is started, the adjusting rod 702 drives the guide plate 706 to deflect, adjusting the final ejection direction and pitch angle of the water flow. After adjusting to the optimal angle, the drive unit 705 stops operating, allowing it to precisely guide the water flow into the rotating water receiving tank 6 at the most ideal angle and position. This enables operators to dynamically adjust the water jet angle according to the actual river water level and flow rate, ensuring maximum conversion of water energy and mechanical energy under any operating conditions and improving power generation efficiency.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A segmented river power generation device utilizing the weight of river water and leverage force, characterized in that: It includes a river weir main body (1), the river weir main body (1) is horizontally placed in the river course, a bearing seat (4) is fixedly arranged on the downstream side of the river weir main body (1), a receiving shaft (3) is rotatably penetrated through the bearing seat (4), a driving water wheel is fixedly installed on the receiving shaft (3), a power generation device is also installed on the bearing seat (4), the input shaft of the power generation device is in transmission connection with the receiving shaft (3), the river weir main body (1) is arranged in a "C" - shaped structure, the river weir main body (1) includes a bearing base (101), a water retaining weir (102) is fixedly installed on the upstream - facing side of the bearing base (101), a water - passing weir top (103) is fixedly installed on the top of the water retaining weir (102), and both the driving water wheel and the power generation device are installed in the space between the bearing base (101) and the water - passing weir top (103).

2. The segmented river power generation device utilizing the weight of river water and leverage force according to claim 1, characterized in that: A water blocking weir (10) is fixedly installed at the downstream - facing end of the bearing base (101).

3. A segmented river power generation device utilizing the weight of river water and leverage force according to claim 1, characterized in that: The power generation device includes a speed - changing device (5) and a generator (8). The input end of the speed - changing device (5) is connected to the end of the receiving shaft (3) through a universal coupling (9), and the input end of the generator (8) is connected to the output end of the speed - changing device (5).

4. A segmented river power generation device utilizing the weight of river water and leverage force according to claim 1, characterized in that: The driving water wheel includes a mounting hub (2) fixedly installed on the receiving shaft (3), and a plurality of water receiving grooves (6) are evenly distributed along the circumferential direction of the mounting hub (2).

5. A segmented river power generation device utilizing the weight of river water and leverage force according to claim 4, characterized in that: An引水组件 (7) is also installed on one side of the mounting hub (2). The引水组件 (7) includes a guide cover (701), the guide cover (701) is arranged on the top of the river weir main body (1), and the upstream - facing side of the guide cover (701) is arranged in a V - shaped structure.

6. A segmented river power generation device utilizing the weight of river water and leverage force according to claim 5, characterized in that: An intercepting mechanism is also installed on one side of the guide cover (701). The intercepting mechanism includes a trash rack (703) installed at the upstream - facing end of the guide cover (701).

7. A segmented river power generation device utilizing the weight of river water and leverage force according to claim 6, characterized in that: A rotating frame (704) is also installed on the downstream - facing side of the guide cover (701), and a guide plate (706) for guiding the water flow to the water receiving groove (6) is rotatably connected to the rotating frame (704).

8. A segmented river power generation device utilizing the weight of river water and leverage force according to claim 7, characterized in that: An adjusting rod (702) is rotatably penetrated through the rotating frame (704), the guide plate (706) is fixedly installed on the adjusting rod (702), a driving device (705) is fixedly installed on the rotating frame (704), and the output end of the driving device (705) is fixedly connected to the end of the adjusting rod (702) to drive it to rotate.

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