Water wheel power generation mechanism capable of achieving valve function

Abstract

The invention belongs to the technical field of power generation equipment, and particularly relates to a water wheel power generation mechanism capable of achieving a valve function, the water wheel power generation mechanism comprises a pipeline, an impeller mechanism is arranged in the pipeline, the pipeline comprises a spherical part, and the impeller mechanism comprises a spherical seat; the spherical seat is arranged in the spherical part, and the spherical seat and the spherical part are coaxially arranged; a circle of blades are arranged on the outer side surface of the spherical seat, and the blades are rotatably connected with the spherical seat; and an angle adjusting device for adjusting the angle of the blade is arranged in the spherical seat. Under the action of the angle adjusting device, all the blades can be matched to form an isolation structure, and the isolation structure is used for preventing water flow from passing through the spherical part. According to the water wheel power generation mechanism, the angles of the blades can be adjusted through the angle adjusting device, so that the overall power generation efficiency of the water wheel is controlled, meanwhile, all the blades can be directly controlled to form an isolation structure when needed, the pipeline is closed to prevent water flow from passing through the pipeline, and in other words, the function of a valve is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of power generation equipment, and in particular to a water wheel power generation mechanism capable of realizing a valve function. Background Art

[0002] As a clean and renewable energy technology, hydropower occupies an increasingly important position in today's global energy structure. As the core equipment in the hydropower system, the turbine undertakes the key task of converting the energy of water flow in nature into mechanical energy. This process is not only efficient but also environmentally friendly. The working principle of the turbine is that the impact of the water flow causes the turbine blades to rotate, which in turn drives the generator connected to it to generate electricity, or drives other types of mechanical devices to work. They are usually installed in hydropower stations and use the water flow drop in rivers, lakes or reservoirs to generate electricity. This energy conversion process not only reduces dependence on fossil fuels and reduces greenhouse gas emissions, but also helps to reduce environmental pollution and ecological damage. In addition, turbines also play an important role in irrigation systems. They can provide the necessary power to pump water to ensure that farmland is adequately irrigated. In pumping stations, turbines can be used to raise water levels to provide support for urban water supply or flood control and drainage. In the field of industrial production, turbines can also be used as a power source to drive various industrial machinery, such as mills, wood processing equipment, etc.

[0003] With the advancement of technology, the design of modern turbines pays more and more attention to improving efficiency and adaptability to meet the power generation needs under different water head and flow conditions. However, most of the existing turbines still use fixed blades, and the angle of the fixed blades cannot be adjusted, which makes it impossible for the impeller itself to finely control the power generation; although a small number of turbines use movable blades with adjustable angles, which allow the power generation efficiency of the entire turbine to be adjusted by adjusting the relative angle of the movable blades, the adjustment range is limited, and when it is necessary to completely stop power generation (shutdown); usually only rely on additional valve (gate) mechanism to cut off the water flow; control is not flexible enough.

[0004] The shutdown method of cutting off the water flow through a valve (gate) mechanism is not applicable in some scenarios. For example, when a large amount of water is needed downstream for irrigation but the electric power has reached saturation, or when the upstream and downstream need to be connected to facilitate fish migration and spawning but power generation is not needed, conflicts between water supply and power generation are likely to occur. The above-mentioned turbine itself cannot solve this problem, because as long as the corresponding valve (gate) is opened to release water and water flows through, it will drive the blades to rotate and generate electricity. In other words, it cannot achieve the situation where the blades do not rotate and power generation does not occur when water flows through.

[0005] Therefore, the present application aims to provide a new hydro-turbine power generation mechanism, which can realize valve function by itself and can realize multiple shutdown modes, especially can realize shutdown when water flow is flowing, that is, the blades do not rotate and power generation does not occur when the water flow is not cut off. Summary of the invention

[0006] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a hydro-turbine power generation mechanism that can realize the valve function, which can not only adapt to different power generation needs by adjusting the blade angle, but also realize shutdown through the cooperation of its own blades in some scenarios, such as completely cutting off the water flow, thereby achieving the effect of valve closing and also realizing the shutdown of the hydro-turbine power generation mechanism, or rotating the blade as a whole to an angle parallel to the water flow direction, so that the blade as a whole does not receive the energy of the water flow and rotates, thereby realizing the shutdown of the hydro-turbine power generation mechanism.

[0007] The technical solution of the present invention is: a water turbine power generation mechanism capable of realizing valve function, comprising a pipeline, and an impeller mechanism is arranged inside the pipeline; The pipeline comprises a spherical portion and a water inlet portion and a water outlet portion respectively located on both sides of the spherical portion; the spherical portion is a spherical shell shape obtained by cutting the middle of a hollow sphere with two parallel planes; The impeller mechanism comprises a spherical seat; the spherical seat is arranged in the spherical portion, the shape of the spherical seat is adapted to the spherical portion, and the spherical seat and the spherical portion are arranged coaxially; a circle of blades is arranged on the outer surface of the spherical seat, and the central axis of the blades when revolving in the spherical portion is colinear with the central axis of the spherical portion; The spherical seat is provided with end covers and a main shaft on both sides along the axial direction; the main shaft is provided with a shaft sleeve on the outer sleeve; the shaft sleeve is fixedly connected to the pipeline through a fixing piece; The blades are rotatably connected to the spherical seat; an angle adjustment device is provided in the spherical seat, and the angle adjustment device is connected to the blades. During use, under the action of the angle adjustment device, all the blades can cooperate to form an isolation structure, and the isolation structure is used to prevent water from passing through the spherical part, thereby achieving the effect or function of closing the valve.

[0008] Furthermore, the diameter of the water inlet gradually decreases from the outside to the inside; the diameter of the water outlet gradually increases from the inside to the outside; and the diameter at the spherical part is greater than the minimum diameter of the water inlet.

[0009] The pipeline of the present invention is carefully designed: First, the spherical part in the middle of the pipe is designed to be a spherical shell, so that when the blade rotates, the top edge of the blade and the inner wall of the spherical part are always kept close to each other, avoiding a large gap between the edge of the blade and the inner wall of the spherical part, which causes a large amount of water to flow away in vain and wastes the energy of the water flow; Secondly, since the spherical seat, blades and other components need to be installed in the spherical part, these components will occupy a certain internal space and reduce the water flow cross-sectional area at the spherical part. Therefore, the present invention designs a spherical shell-shaped spherical part, and makes the diameter of the spherical part larger than the minimum diameter of the water inlet part. Compared with directly using an ordinary circular pipe with the same diameter as the water inlet part, the present invention uses a spherical part to increase the water flow cross-sectional area at the corresponding position. The increase in the water flow cross-load area at the spherical part will reduce the water flow speed relatively, which is beneficial to reduce the resistance of the blade during self-rotation. Thirdly, the present invention designs the pipe diameter of the water inlet to gradually decrease from the outside to the inside, so that the velocity of the water flow therein will increase. The increase in velocity means the increase in the kinetic energy of the water flow, which can ultimately improve the efficiency of the turbine. The design of the pipe diameter of the water outlet gradually increasing from the inside to the outside helps to stabilize the water flow and avoid eddy currents and unstable flow phenomena when the water flow enters the downstream; this is conducive to ensuring the stable operation of the turbine and improving its efficiency; In summary, after comprehensively considering the above-mentioned purposes and effects and weighing the relevant gains and losses, the basic shape of the pipeline in the present invention is finally designed.

[0010] Furthermore, the blade includes a blade body and a blade shaft, the blade body is fixed on the blade shaft, one end of the blade shaft passes through the spherical seat and is connected to the angle adjustment device, under the action of the angle adjustment device, the blade rotates with the blade shaft as the rotation axis.

[0011] Furthermore, the bottom of the sheet body matches the outer surface of the spherical seat, so that when the blade rotates, the bottom of the sheet body does not interfere with the outer surface of the spherical seat; and water basically does not flow between the sheet body and the spherical seat; the top of the sheet body matches the inner surface of the spherical part; so that when the blade revolves, the top of the sheet body does not interfere with the inner surface of the spherical part; and water does not flow between the sheet body and the spherical part.

[0012] In order to achieve such a technical effect, the processing accuracy and assembly accuracy of the sheet body and the spherical seat need to reach a certain level, for example, the gap between the top of the sheet body and the inner wall of the spherical seat can be controlled within a certain range (for example, about 0.2 mm), so that the sealing effect can be achieved while ensuring the rotation effect, that is, the blades can rotate flexibly, and the water flow will basically not flow through the corresponding gap. Preferably, a related sliding sealing structure can also be directly set on the edge of the sheet body to achieve a sealing effect without affecting the rotation of the blades. The sliding sealing structure can refer to the prior art, because it is not necessary for the present invention, it will not be described here.

[0013] Furthermore, under the action of the angle adjustment device, the blades of all the blades can be spliced ​​together to form an isolation structure, which is used to prevent water from passing through the spherical part to achieve an effect similar to closing a valve, and also to shut down the hydro-turbine generator. Of course, in some cases, all the blades can also be rotated to an angle parallel to the central axis of the spherical part, that is, all the blades are generally parallel to the direction of the water flow. In this case, the water flow can flow directly through the blades, and the blades will not rotate. At this time, the hydro-turbine generator will not generate electricity, that is, it will shut down.

[0014] Furthermore, the sheet bodies are all fan-shaped, so that the isolation structure formed by splicing all the blade sheets in sequence is a complete circular ring.

[0015] Furthermore, the blade body may be designed to be curved; the blade body is designed to be curved in order to improve the efficiency and performance of the turbine, while meeting the requirements of fluid mechanics and optimizing the way water flows through the blades.

[0016] Furthermore, a thickening layer is provided on the back surface of the sheet body, and the thickening layer is used to prevent cavitation from damaging the sheet body.

[0017] Furthermore, the angle adjustment device includes a motor, a screw, a slider and a connecting rod mechanism, one end of the connecting rod mechanism is connected to the slider, and the other end is connected to the blade shaft. When the slider moves on the screw, the connecting rod mechanism drives the blade shaft to rotate; that is, the connecting rod mechanism is used to convert the linear motion of the slider into the rotational motion of the blade.

[0018] Furthermore, the main shaft is connected to a generator outside the pipeline through a transmission shaft.

[0019] Furthermore, the shaft sleeve is arranged in the water inlet part, and the guide vane is arranged on the outside of the shaft sleeve, and the guide vane is used to adjust the impact direction of the water flow so that the water flow flows to the surface of the blade at a suitable angle, thereby improving the energy conversion efficiency.

[0020] Furthermore, the angle of the guide vane can also be adjusted, and the change of the guide vane angle is coupled with the change of the blade angle. That is, when the blade angle changes, the guide vane angle also changes synchronously, so that after the water flows through the guide vane, it always drives the blades of the impeller mechanism to rotate at an angle that meets the requirements of fluid mechanics to ensure energy conversion efficiency.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. The water wheel power generation mechanism capable of realizing valve function of the present application is designed with a spherical part on the pipeline, and the spherical part cooperates with the blades of the impeller mechanism so that the blades can flexibly revolve and rotate; the angle of the blades can be adjusted by an angle adjustment device to adapt to different power generation needs; specifically, when it is necessary to improve the power generation efficiency, the angle of the blades can be increased by the angle adjustment device to increase the contact area between the blades and the water flow, thereby capturing more kinetic energy of the water flow, driving the runner to rotate faster, and increasing the power generation; on the contrary, when the power generation demand is reduced or the interference with the water flow needs to be reduced, the angle of the blades can be reduced to reduce the contact area between the blades and the water flow, reduce the rotation speed of the runner, and thus reduce the power generation; 2. The angle adjustment device can form an isolation structure after the blades rotate to a specific angle. The isolation structure can separate the spherical part of the pipeline to prevent water from flowing through the pipeline at will, thereby achieving the effect of valve closure to a certain extent, and also realizing the shutdown of the hydro-turbine generator (no power generation); 3. In other scenarios, the angle adjustment device can also rotate all the blades to an angle parallel to the central axis of the spherical part, that is, the blades remain generally parallel to the water flow direction. At this time, the water flow can flow directly through the blades without the blades rotating. Obviously, the hydro-turbine generator will not generate electricity at this time, thus achieving the shutdown of the turbine.

[0022] In conclusion, the hydro-turbine power generation mechanism in the present invention does not need to be additionally provided with a gate mechanism, the hydro-turbine itself can realize the valve function, and can be shut down in two ways. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 is a schematic diagram of the blades of Example 1 of the present invention forming an isolation structure; Figure 3 is a schematic diagram of a state of the impeller mechanism in Example 1 of the present invention; Figure 4 is a schematic diagram of a state of the impeller mechanism in Example 1 of the present invention; Figure 5 is a schematic diagram of the case where the blade is parallel to the central axis of the spherical portion in Example 1 of the present invention; Figure 6 is a schematic diagram of Example 1 of the present invention after omitting the impeller mechanism; Figure 7 is a schematic diagram of the angle adjustment device in Example 1 of the present invention; Figure 8 is a schematic diagram of a blade and an angle adjustment device thereof in Embodiment 2 of the present invention; Fig. 9is a schematic diagram of a blade and an angle adjustment device thereof in Embodiment 3 of the present invention; Fig.10 is a schematic diagram of a blade in Example 3 of the present invention; In the figure: 1, pipeline; 11, spherical part; 12, water inlet part; 13, water outlet part; 14, guide rod; 21, spherical seat; 22, blade; 221, sheet body; 222, blade shaft; 223, thickening layer; 23, main shaft; 24, bushing; 25, end cover; 26, guide vane; 27, fixing part; 3, generator; 31, floating platform; 32, transmission shaft; 41, motor; 42, screw; 43, slider; 44, connecting rod mechanism. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can implement, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present invention. In addition, in the following description, the description of the known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention. It should also be noted that in order to avoid blurring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the scheme of the present invention are shown in the drawings, and other details that are not closely related to the present invention are omitted.

[0025] Example 1 like Figure 1-7As shown, this embodiment is a water wheel power generation mechanism that can realize valve function, including a pipeline 1, an impeller mechanism is arranged inside the pipeline 1, the pipeline 1 includes a spherical portion 11 and a water inlet portion 12 and a water outlet portion 13 respectively located on both sides of the spherical portion 11; the spherical portion 11 is a spherical shell obtained by intercepting the middle of a hollow sphere with two parallel planes; the impeller mechanism includes a spherical seat 21; the spherical seat 21 is arranged in the spherical portion 11, the shape of the spherical seat 21 is adapted to the spherical portion 11, and the spherical seat 21 is arranged coaxially with the spherical portion 11; a circle of blades 22 is arranged on the outer surface of the spherical seat 21, The central axis of the blade 22 when revolving in the spherical portion 11 is colinear with the central axis of the spherical portion 11; the spherical seat 21 is provided with end covers 25 and a main shaft 23 on both sides along the axial direction; the outer sleeve of the main shaft 23 is provided with a shaft sleeve 24; the shaft sleeve 24 is fixedly connected to the pipeline 1 through a fixing member 27; the blade 22 is rotatably connected to the spherical seat 21; an angle adjustment device is provided in the spherical seat 21, and the angle adjustment device is connected to the blade 22. During operation, under the action of the angle adjustment device, all the blades 22 cooperate to form an isolation structure, and the isolation structure is used to prevent water from passing through the spherical portion 11.

[0026] In this embodiment, the blade 22 includes a sheet body 221 and a blade shaft 222. The sheet body 221 is fixed on the blade shaft 222. One end of the blade shaft 222 passes through the spherical seat 21 and is connected to the angle adjustment device. Under the action of the angle adjustment device, the blade 22 rotates with the blade shaft 222 as the rotation axis. The bottom of the sheet body 221 matches the outer surface of the spherical seat 21, so that when the blade 22 rotates, the bottom of the sheet body 221 does not interfere with the outer surface of the spherical seat 21; and it is ensured that the water flow does not flow through the position between the sheet body 221 and the spherical seat 21; the top of the sheet body 221 matches the inner surface of the spherical portion 11; so that when the blade 22 revolves, the top of the sheet body 221 does not interfere with the inner surface of the spherical portion 11; and it is ensured that the water flow does not flow through the position between the sheet body 221 and the spherical portion 11.

[0027] In this embodiment, under the action of the angle adjustment device, the sheet bodies 221 of all blades 22 are spliced ​​together to form an isolation structure, and the isolation structure is used to prevent water from passing through the spherical portion 11 to achieve an effect similar to a valve.

[0028] In this embodiment, the sheet bodies 221 are all fan-shaped, and the isolation structure formed by sequentially splicing the sheet bodies 221 of all blades 22 is a complete circular ring.

[0029] In this embodiment, the angle adjustment device includes a motor 41, a screw rod 42, a slider 43 and a connecting rod mechanism 44. One end of the connecting rod mechanism 44 is connected to the slider 43, and the other end is fixedly connected to the blade shaft 222. When the slider 43 moves on the screw rod 42, the connecting rod mechanism 44 can drive the blade shaft 222 to rotate; that is, the connecting rod mechanism 44 is used to convert the linear motion of the slider 43 into the rotational motion of the blade 22.

[0030] In this embodiment, the main shaft 23 is connected to the generator 3 outside the pipeline 1 through the transmission shaft 32. The generator 3 is arranged on the floating platform 31, and a guide rod 14 is also arranged above the outside of the pipeline 1. The guide rod 14 is used to cooperate with the floating platform 31 and make the floating platform 31 move only in the vertical direction. Through the floating platform 31, the generator 3 can automatically rise and fall with the water surface, and the transmission shaft 32 adopts a telescopic structure; the sleeve 24 is arranged in the water inlet part 12, and a guide vane 26 is arranged on the outside of the sleeve 24. The guide vane 26 is used to adjust the impact direction of the water flow so that the water flow flows to the surface of the blade 22 at a suitable angle to improve the energy conversion efficiency.

[0031] In this embodiment, a cavity is provided inside the fixing member 27, and a corresponding cable can be provided in the cavity. A carbon ring is provided at the end of the main shaft 23, and the carbon ring and the cable can be connected in rotational contact, so that signal communication can be achieved when the main shaft rotates; so that a controller or sensor or other mechanism located outside the pipeline can accurately transmit the control signal to the relevant components inside the pipeline through the cable at any time, such as transmitting it to the angle adjustment device, to control the rotation of the motor 41, thereby achieving precise adjustment of the angle of the blade 22.

[0032] In some other embodiments, the angle of the guide vane 26 can also be adjusted, and the change in the angle of the guide vane 26 is coupled with the change in the angle of the blade 22. That is, when the angle of the blade 22 changes, the angle of the guide vane 26 also changes synchronously, so that after the water flows through the guide vane 26, the blade 22 of the impeller mechanism is always pushed to rotate at an angle that meets the requirements of fluid mechanics to ensure energy conversion efficiency. The specific adjustment method of the guide vane 26 can adopt a structure similar to the angle adjustment device or other existing rotation adjustment mechanisms, which will not be repeated here.

[0033] The working principle and use method of the water turbine power generation mechanism in this embodiment are the same as those of the existing corresponding water turbines, and its advantages are: when the power generation power needs to be adjusted, the angle of the blade 22 can be adjusted by the angle adjustment device, so as to control the overall power generation efficiency of the water turbine. At the same time, when the water turbine needs to be shut down (not generating electricity), all the blades 22 can be directly controlled to form an isolation structure to close the pipeline 1 and prevent water from passing through the pipeline 1, that is, the water turbine of the present application has a built-in valve function.

[0034] Example 2 like Figure 8 As shown, the difference between this embodiment and embodiment 1 is that: in this embodiment, the sheet body 221 of the blade 22 is set to a curved surface. The sheet body 221 is designed as a curved surface to meet the requirements of fluid mechanics and optimize the way water flows through the blade 22 to improve the efficiency and performance of the turbine.

[0035] Example 3 like Figure 9-10 As shown in the figure, the difference between this embodiment and embodiment 2 is that in this embodiment, a thickening layer 223 is provided on the back surface of the blade 221; the thickening layer 223 is used to prevent the damage of the blade 221 by cavitation phenomenon, so as to extend the service life of the blade 22. Of course, in actual application, the thickening layer 223 can be integrally formed with the blade 221. That is, the blade 221 can be directly made into a designed thickness.

[0036] In some other embodiments, the specific structure of the angle adjustment device may include a motor 41, a worm gear and a gear. The two ends of the worm gear are respectively rotatably fixed on the two side end faces of the spherical seat 21, the gear is fixed on the blade shaft 222, and the worm gear is meshed with the gear. One end of each worm gear is connected to a motor 41. Driven by the motor 41, the worm gear drives the gear to rotate, thereby driving the corresponding blade shaft 222 to rotate.

[0037] The above are only some 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 combinations and modifications of the aforementioned various technical features. Without departing from the spirit and scope of the present invention, those skilled in the art may improve, modify, or replace the present invention with equivalents, or apply the structure or method of the present invention to other fields to achieve the same effect, which all fall within the scope of protection included in the present invention.

Claims

1. A water turbine power generation mechanism capable of realizing valve function, comprising a pipeline, an impeller mechanism is arranged inside the pipeline, and is characterized in that: The pipeline comprises a spherical portion and a water inlet portion and a water outlet portion respectively located on two sides of the spherical portion; The spherical portion is a spherical shell shape obtained by cutting the middle of the hollow sphere with two parallel planes; The impeller mechanism comprises a spherical seat; the spherical seat is arranged in the spherical portion, the shape of the spherical seat is adapted to the spherical portion, and the spherical seat and the spherical portion are arranged coaxially; a circle of blades is arranged on the outer surface of the spherical seat, and the central axis of the blades when revolving in the spherical portion is colinear with the central axis of the spherical portion; The spherical seat is provided with end covers and a main shaft on both sides along the axial direction; the main shaft is provided with a shaft sleeve on the outer sleeve; the shaft sleeve is fixedly connected to the pipeline through a fixing piece; The blades are rotatably connected to the spherical seat; an angle adjustment device is provided in the spherical seat, and the angle adjustment device is connected to the blades. During operation, under the action of the angle adjustment device, all the blades cooperate to form an isolation structure, and the isolation structure is used to prevent water from passing through the spherical part.

2. The water turbine power generation mechanism capable of realizing valve function according to claim 1, characterized in that: The blade comprises a blade body and a blade shaft, wherein the blade body is fixed on the blade shaft, and one end of the blade shaft passes through the spherical seat and is connected to the angle adjustment device. Under the action of the angle adjustment device, the blade rotates with the blade shaft as the rotation axis.

3. The water turbine power generation mechanism capable of realizing valve function according to claim 2, characterized in that: The bottom of the sheet body matches the outer surface of the spherical seat, so that when the blade rotates, the bottom of the sheet body does not interfere with the outer surface of the spherical seat, and water does not flow between the sheet body and the spherical seat; the top of the sheet body matches the inner surface of the spherical part; so that when the blade revolves, the top of the sheet body does not interfere with the inner surface of the spherical part; and water does not flow between the sheet body and the spherical part.

4. The water turbine power generation mechanism capable of realizing valve function according to claim 2, characterized in that: Under the action of the angle adjustment device, the sheets of all the blades are spliced ​​together to form an isolation structure.

5. The water turbine power generation mechanism capable of realizing valve function according to claim 2, characterized in that: The sheet bodies are all fan-shaped, and the isolation structure formed by sequentially splicing the sheet bodies of all the blades is a complete circular ring.

6. The water turbine power generation mechanism capable of realizing valve function according to claim 2, characterized in that: The sheet body is a curved surface.

7. The water turbine power generation mechanism capable of realizing valve function according to claim 2, characterized in that: The back-to-water surface of the sheet body is provided with a thickened layer, and the thickened layer is used to prevent cavitation from damaging the sheet body.

8. The water turbine power generation mechanism capable of realizing valve function according to claim 1, characterized in that: The angle adjustment device includes a motor, a screw, a slider and a connecting rod mechanism, one end of the connecting rod mechanism is connected to the slider, and the other end is connected to the blade shaft. When the slider moves on the screw, the connecting rod mechanism drives the blade shaft to rotate; that is, the connecting rod mechanism is used to convert the linear motion of the slider into the rotational motion of the blade.

9. The water turbine power generation mechanism capable of realizing valve function according to claim 1, characterized in that: The main shaft is connected to a generator outside the pipeline through a transmission shaft.

10. The water turbine power generation mechanism capable of realizing valve function according to claim 1, characterized in that: The shaft sleeve is arranged in the water inlet part, and a guide vane is arranged on the outside of the shaft sleeve. The guide vane is used to adjust the impact direction of the water flow so that the water flow impacts the surface of the blade.

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