A wellbore type hydroelectric power plant

Abstract

This invention provides a well-type hydroelectric power generation device, comprising a vertically arranged well, with a water turbine fixedly mounted at the lower end of the well via multiple brackets. A generator set is mounted above the water turbine and connected thereto. The water turbine has a flow channel with a vertically upward opening. A flow regulating component, extending vertically and having a downwardly convex arc at its lower end, is vertically mounted and movable within the well. An inlet pipe is fixedly connected to the upper end of the well, and a tailrace pipe is fixedly connected to the lower end. The inlet pipe is located above the flow channel opening, and the tailrace pipe is located below the flow channel opening. This invention solves the problem in existing technologies where all drainage water enters the water turbine, resulting in an inability to adjust the power generation.

Description

Technical Field

[0001] This utility model relates to the field of hydropower equipment technology, and in particular to a well-type hydropower generation device. Background Technology

[0002] Small generator sets can be used in drainage ditches to generate electricity from the water flow. In existing technology, the generator set is typically installed directly in the drainage ditch, with water flowing through a turbine connected to the generator set. The turbine's operation drives the generator to produce electricity. However, this method usually results in all the water entering the turbine, and the water flow rate cannot be adjusted, leading to inconsistent power generation. Such small generator sets are typically used in agricultural production, where electricity demand fluctuates, and the inability to adjust power output is inconvenient. Therefore, there is a need for a power generation device more suitable for drainage ditches. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a well-type hydroelectric power generation device, which solves the problem that in existing technologies, all the water from the drainage channel enters the turbine, resulting in the inability to adjust the power generation.

[0004] According to an embodiment of this utility model, a well-type hydroelectric power generation device includes a vertically arranged well. A water turbine is fixedly installed at the lower end of the well through multiple brackets. A generator set connected to the water turbine is arranged above the water turbine. The water turbine is provided with a flow channel with a vertically upward opening. A flow regulating component that can enter and exit the opening is raised and lowered inside the well. The flow regulating component extends vertically and has a downwardly convex arc shape at its lower end. An inlet pipe is fixedly connected to the upper end of the well and communicates with it. A tailwater pipe is fixedly connected to the lower end of the well and communicates with it. The inlet pipe is located above the opening of the flow channel, and the tailwater pipe is located below the opening of the flow channel. The well is installed at the end or middle of the drainage ditch. The inlet pipe is connected to the upstream of the drainage ditch to introduce water. After passing through the well, the water is discharged from the tailrace pipe to the downstream of the drainage ditch. During the process, water can enter the flow channel through the opening and can also pass through the brackets. The flow regulating component moves up and down. As the flow regulating component enters the opening, the arc-shaped structure at the lower end will gradually reduce the amount of water entering the opening. When the flow regulating component is at its lowest position, the water volume is the lowest and insufficient to drive the turbine to rotate, thus stopping the operation. When the flow regulating component is above the opening, the water volume increases and the turbine runs at full speed. The operation of the flow regulating component is the water volume adjustment process. This allows the power generation of the generator set to be adjusted accordingly, solving the problem in the existing technology where all the water in the drainage ditch enters the turbine, resulting in the inability to adjust the power generation.

[0005] Furthermore, a mounting frame is fixedly installed at the upper end of the well shaft, surrounding the generator set. A vertical rod is fixedly connected to the flow regulating component, and the vertical rod extends upward and telescopically passes through the mounting frame.

[0006] Furthermore, the mounting bracket is also equipped with a driver to move the vertical rod up and down.

[0007] Furthermore, the actuator includes a hydraulic cylinder.

[0008] Furthermore, multiple brackets are equidistantly arranged around the upper end of the turbine. Each bracket includes a crossbar and an oblique bar fixedly connected to the crossbar and set at an acute angle. Both the crossbar and the oblique bar are also fixedly connected to the inner wall of the shaft. The oblique bar is located above the crossbar, and the lower end of the oblique bar is fixedly connected to the turbine.

[0009] Furthermore, the flow channel and the flow regulating component each include a pair symmetrically arranged.

[0010] Furthermore, the flow control component includes a solid cylindrical structure.

[0011] Furthermore, the flow regulating component includes a hollow cylindrical structure with an open top, and a perforation is provided at the bottom of the cylindrical structure.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The well is installed on the drainage ditch. As the water flows through the well, some of it enters the turbine's flow channel. The regulating component moves up and down inside the well. As the regulating component enters the opening, the arc-shaped structure at its lower end gradually reduces the amount of water entering the opening. When the regulating component is at its lowest position, the water volume is minimal and insufficient to drive the turbine to rotate, thus stopping operation. When the regulating component is above the opening, the water volume increases, and the turbine runs at full speed. The operation of the regulating component is the water volume adjustment process, which allows the generator set's power generation to be adjusted accordingly. This solves the problem in existing technologies where all the water from the drainage ditch enters the turbine, making it impossible to adjust the power generation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model (the upper and lower flow adjustment components in the figure are schematic diagrams of two height positions, and do not mean that there are flow adjustment components located at the top and bottom).

[0015] Figure 2 This is a schematic diagram of a flow regulating component structure according to an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of another flow regulating component structure according to an embodiment of the present utility model;

[0017] In the above attached figures:

[0018] 1. Well shaft; 2. Bracket; 3. Water turbine; 4. Generator set; 5. Flow channel; 6. Vertical rod; 7. Flow regulating component; 8. Inlet pipe; 9. Tailwater pipe; 10. Perforation; 11. Mounting frame; 12. Horizontal rod; 13. Diagonal rod. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] In an exemplary implementation, such as Figure 1 As shown, this embodiment provides a well-type hydroelectric power generation device, which includes a vertically arranged well 1. A water turbine 3 is fixedly installed at the lower end of the well 1 through multiple brackets 2. A generator set 4 is arranged above the water turbine 3 and connected to it. A flow channel 5 is provided on the water turbine 3 and the flow channel 5 has a vertically upward opening. A flow regulating component 7 that can enter and exit the opening is raised and lowered inside the well 1. The flow regulating component 7 extends vertically and the lower end is a downwardly convex arc shape. A water inlet pipe 8 is fixedly connected to the upper end of the well 1 and communicates with it. A tailwater pipe 9 is fixedly connected to the lower end of the well 1 and communicates with it. The water inlet pipe 8 is located above the opening of the flow channel 5, and the tailwater pipe 9 is located below the opening of the flow channel 5. The flow channel 5 and the corresponding flow regulating component 7 can be a symmetrically arranged pair. In this scheme, the well shaft 1 is installed at the end or middle of the drainage ditch. The inlet pipe 8 is connected to the upstream of the drainage ditch to introduce water. After passing through the well shaft 1, the water is discharged from the tailpipe 9 to the downstream of the drainage ditch. During the process, the water can enter the flow channel 5 through the opening and can also pass through the brackets 2. The flow regulating component 7 moves up and down. During the process of the flow regulating component 7 entering the opening, the arc-shaped structure at the lower end will gradually reduce the amount of water entering the opening. When the flow regulating component 7 is at the lowest position, the water volume is the lowest and insufficient to drive the turbine 3 to rotate, thus stopping the operation. When the flow regulating component 7 is above the opening, the water volume increases and the turbine runs at full speed. The operation of the flow regulating component 7 is the water volume adjustment process. This allows the power generation of the generator set 4 to be adjusted accordingly, solving the problem in the prior art where all the water in the drainage ditch enters the turbine 3, resulting in the inability to adjust the power generation.

[0022] like Figure 1 , 2 As shown, the flow regulating component 7 can be a solid cylindrical structure. The downward-convex arc structure at the lower end can gradually reduce the water flow as it enters the opening. However, there is a gap between the outer wall of the cylindrical structure and the inner wall of the opening, which ensures that water can always pass through the flow channel 5.

[0023] like Figure 1 , 3 As shown, in another embodiment, the flow regulating element 7 can also be a hollow cylindrical structure with an open top. A perforation 10 is provided at the bottom of the cylindrical structure, which can also allow water to pass through, thereby ensuring that water can always enter the flow channel 5.

[0024] like Figure 1 As shown, in a further embodiment, a mounting frame 11 is fixedly installed at the upper end of the well shaft 1, surrounding the generator set 4. The flow regulating component 7 is fixedly connected to a vertical rod 6, and the vertical rod 6 extends upward and telescopically passes through the mounting frame 11. The mounting frame 11 is also equipped with a driver that drives the vertical rod 6 to rise and fall. The driver can be a hydraulic cylinder, and the output end of the hydraulic cylinder is connected to the vertical rod 6, thereby driving the vertical rod 6 to move up and down to realize the raising and lowering of the flow regulating component 7.

[0025] like Figure 1 As shown, in a further embodiment, multiple brackets 2 are equidistantly arranged around the upper end of the turbine 3, such as three or six, to provide stable support for the turbine 3. At the same time, there are gaps between the brackets 2 for water to flow through. More specifically, the bracket 2 includes a crossbar 12 and an oblique bar 13 fixedly connected to the crossbar 12 and set at an acute angle. Both the crossbar 12 and the oblique bar 13 are also fixedly connected to the inner wall of the shaft 1, and the oblique bar 13 is located above the crossbar 12. The lower end of the oblique bar 13 is fixedly connected to the turbine 3, that is, the bracket 2 and the inner wall of the shaft 1 form a triangular structure, thereby providing stable support for the turbine 3 through the lower end of the oblique bar 13.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A well-type hydroelectric power generation device, characterized in that, The system includes a vertically arranged well casing. A water turbine is fixedly installed at the lower end of the well casing via multiple brackets. A generator set is connected to the water turbine above it. The water turbine has a flow channel with a vertically upward opening. A flow regulating component that can enter and exit the opening is installed vertically inside the well casing. The flow regulating component extends vertically and has a downwardly convex arc at its lower end. A water inlet pipe is fixedly connected to the upper end of the well casing, and a tailrace pipe is fixedly connected to the lower end. The water inlet pipe is located above the flow channel opening, and the tailrace pipe is located below the flow channel opening.

2. The well-type hydroelectric power generation device as described in claim 1, characterized in that, The upper end of the well is fixedly equipped with a mounting frame surrounding the generator set. The flow regulating component is fixedly connected to a vertical rod, which extends upward and retracts through the mounting frame.

3. The well-type hydroelectric power generation device as described in claim 2, characterized in that, The mounting bracket is also equipped with a driver to move the vertical rod up and down.

4. The well-type hydroelectric power generation device as described in claim 3, characterized in that, The actuator includes a hydraulic cylinder.

5. The well-type hydroelectric power generation device as described in any one of claims 1-4, characterized in that, Multiple brackets are equidistantly arranged around the upper end of the turbine. Each bracket includes a crossbar and an oblique bar fixedly connected to the crossbar and set at an acute angle. Both the crossbar and the oblique bar are also fixedly connected to the inner wall of the shaft. The oblique bar is located above the crossbar, and the lower end of the oblique bar is fixedly connected to the turbine.

6. The well-type hydroelectric power generation device as described in claim 5, characterized in that, The flow channel and the flow regulating component each consist of a pair arranged symmetrically.

7. The well-type hydroelectric power generation device as described in claim 1, characterized in that, The flow control component comprises a solid cylindrical structure.

8. The well-type hydroelectric power generation device as described in claim 1, characterized in that, The flow regulating component includes a hollow cylindrical structure with an open top, and a perforation at the bottom of the cylindrical structure.

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