Auxiliary power generation device and power generation system

Abstract

The utility model relates to the technical field of hydroelectric generation, and provides an auxiliary power generation device and a power generation system, which comprise a water outlet pipe, at least one group of branch guide pipes are arranged on the water outlet pipe, a group of auxiliary power generation components are arranged in each group of branch guide pipes, each auxiliary power generation component comprises an auxiliary generator and a conical water wheel, and extension parts are arranged at the top ends of the branch guide pipes. The auxiliary generator is mounted in the extension part, a rotor of the auxiliary generator extends into the branch guide pipe, the conical water wheel is arranged in the branch guide pipe and fixedly connected with the rotor, and a plurality of groups of vortex fan blades which are uniformly distributed are arranged on the conical water wheel; compared with the prior art, part of water flow in the water outlet pipe can flow to the branch guide pipes, the water flow in the branch guide pipes drives the conical water wheel to rotate after being guided by the vortex disc and the flow collecting cover, consumption of kinetic energy of the water flow can be reduced through the arc-shaped vortex fan blades, and it is guaranteed that the water flow output by the water outlet pipe can normally impact the power generation impeller; and the power generation efficiency can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydropower generation, in particular to an auxiliary power generation device and a power generation system. Background Technique

[0002] Hydropower generation devices are common clean energy power generation devices nowadays. Conventional hydropower generation devices mostly need to be installed in places with high and low drops or continuous water flows, and use the continuous impact of water flow on the power generation device to generate electricity.

[0003] Since hydropower generation devices need to rely on water flow and are easily restricted by terrain, at present, it is necessary to develop hydropower generation devices that can recycle water flow and reduce the dependence on terrain. Part of this kind of power generation device usually includes a high-position water storage tank, a water outlet pipe and a power generation device. The water flow in the water storage tank impacts the water wheel of the power generation device through the guidance of the water outlet pipe to generate electricity.

[0004] Since the water outlet pipe of this kind of power generation device is relatively long and the height drop is relatively large, but the kinetic energy generated by the water outlet of the water outlet pipe is limited, and the power generation efficiency of impacting the water wheel is limited, it is difficult to make full use of the kinetic energy of water flow. Therefore, there is still room for improvement in the existing power generation device. Content of the Utility Model

[0005] The purpose of the utility model is to provide an auxiliary power generation device and a power generation system, aiming to solve the problem of limited power generation efficiency of existing hydropower generation devices.

[0006] To achieve the above purpose, the utility model provides an auxiliary power generation device, which includes an inlet pipe, a branch pipe and an outlet pipe connected in sequence. An auxiliary power generation component is arranged in the branch pipe. The auxiliary power generation component includes an auxiliary generator and a conical water wheel. An extension part is arranged at the top of the branch pipe. The auxiliary generator is installed in the extension part. The rotor of the auxiliary generator extends into the branch pipe. The conical water wheel is arranged in the branch pipe and is fixedly connected to the rotor. A plurality of groups of uniformly distributed eddy current fan blades are arranged on the conical water wheel;

[0007] An eddy current disk and a current collecting cover are arranged in the branch pipe. In the water flow direction, the eddy current disk, the current collecting cover and the conical water wheel are sequentially installed in the branch pipe; a plurality of groups of diagonal flow fan blades are uniformly distributed in the eddy current disk, and the rotation directions of the diagonal flow fan blades and the eddy current fan blades are opposite; the cross section of the current collecting cover is enlarged first and then reduced and then enlarged again, and one end of the eddy current fan blade extends into the current collecting cover.

[0008] Further, a mounting seat for mounting the auxiliary generator is installed at the extension part, and a bearing and a waterproof gasket are arranged in the mounting seat.

[0009] Further, a bracket is arranged in the branch pipe. The bracket is arranged below the conical water wheel and is connected to the rotor of the auxiliary generator.

[0010] A power generation system includes a water outlet pipe, a water circulation component, and a water turbine power generation component, and also includes the above-mentioned auxiliary power generation device. The auxiliary power generation device is arranged on the water outlet pipe. In the water flow direction, both ends of the auxiliary power generation device are communicated with the water outlet pipe through an inlet pipe and an outlet pipe respectively; the water circulation component includes a collecting pool, a transfer pool, a water supply pool, and an energy storage pool, and also includes a water supply pump and a hydraulic ram pump; the water turbine power generation component includes a transformer group, a main generator, a power generation impeller, and a return pool;

[0011] The power generation impeller is installed on the main generator. The main generator is connected to an external power grid through a transformer group. The return pool is arranged directly below the power generation impeller. The return pool is communicated with the collecting pool through a pipeline. A water supply pump is arranged in the collecting pool, and the water supply pump is used to pump the water flow in the collecting pool to the transfer pool. The transfer pool is communicated with the water supply pool through a pipeline. A hydraulic ram pump is arranged in the water supply pool, and the hydraulic ram pump is used to pump the water flow in the water supply pool to the energy storage pool. The water flow in the energy storage pool then falls through the water outlet pipe to impact the power generation impeller.

[0012] Furthermore, a return pipe is arranged between the water supply pool and the collecting pool, and a small generator is arranged on the return pipe; a small generator is also arranged on the pipeline between the return pool and the collecting pool.

[0013] Furthermore, the collecting pool is located below the return pool, and the drop between the collecting pool and the return pool is R1, where 10m ≤ R1 ≤ 15m; the transfer pool is located above the collecting pool, and the drop between the transfer pool and the collecting pool is R2, where 20m ≤ R1 ≤ 30m; the water supply pool is located below the transfer pool, and the drop between the water supply pool and the transfer pool is R3, where 1m ≤ R1 ≤ 10m; the energy storage pool is located above the water supply pool, and the drop between the energy storage pool and the water supply pool is R4, where 10m ≤ R1 ≤ 20m.

[0014] Furthermore, the branch conduit is communicated with the inlet pipe, the outlet pipe, and the water outlet pipe. The axis of the branch conduit is parallel to the axis of the water outlet pipe. The angle formed by the axis of the inlet pipe and the axis of the water outlet pipe is ∠1, where 40° ≤ ∠1 ≤ 50°; the angle formed by the axis of the water outlet pipe and the axis of the outlet pipe is ∠2, where 55° ≤ ∠2 ≤ 60°.

[0015] Furthermore, a valve switch is arranged on the water outlet pipe.

[0016] Furthermore, at least one group of auxiliary power generation devices is provided, and multiple groups of auxiliary power generation devices are arranged at intervals in the water flow direction.

[0017] An auxiliary power generation device provided by the present utility model, compared with the prior art, part of the water flow in the outlet pipe will flow into the sub-conduit. The water flow in the sub-conduit drives the conical water wheel to rotate after being guided by the eddy current disk and the current collector cover. The arc-shaped eddy current fan blades can reduce the consumption of the kinetic energy of the water flow. While ensuring that the water flow output from the outlet pipe can normally impact the power generation impeller, the power generation efficiency can be further improved. The power generation system with this auxiliary power generation device also has the above technical effects. Description of the Drawings

[0018] Figure 1 is a perspective view of the auxiliary power generation device of the present utility model;

[0019] Figure 2 is a sectional view of the auxiliary power generation device of the present utility model;

[0020] Figure 3 is a perspective sectional view of the auxiliary power generation assembly in the auxiliary power generation device of the present utility model;

[0021] Figure 4 is a perspective view of the conical water wheel in the auxiliary power generation device of the present utility model;

[0022] Figure 5 is a sectional view of the conical water wheel in the auxiliary power generation device of the present utility model;

[0023] Figure 6 is a perspective view of the eddy current disk in the auxiliary power generation device of the present utility model;

[0024] Figure 7 is a perspective sectional view of the current collector cover in the auxiliary power generation device of the present utility model;

[0025] Figure 8 is a structural view of the power generation system of the present utility model;

[0026] Figure 9 is an installation view of the auxiliary power generation device on the outlet pipe in the present utility model;

[0027] Figure 10 is a sectional view of the auxiliary power generation device on the outlet pipe in the present utility model;

[0028] Figure 11 is a sectional view of the valve switch in the present utility model.

[0029] Description of the Reference Numerals:

[0030] Wherein: 1. Water outlet pipe; 2. Branch conduit; 3. Auxiliary power generation assembly; 30. Auxiliary generator; 31. Eddy current disk; 310. Oblique flow fan blades; 32. Flow collector cover; 33. Conical water wheel; 330. Eddy current fan blades; 34. Bracket; 4. Mounting seat; 5. Inlet pipe; 6. Outlet pipe; 7. Valve switch; 8. Water circulation assembly; 80. Sump; 81. Transfer pool; 82. Water supply pool; 83. Energy storage pool; 84. Water supply pump; 85. Hydraulic ram pump; 86. Small generator; 9. Water wheel power generation assembly; 90. Main generator; 91. Power generation impeller; 92. Return pool. Detailed implementation manners

[0031] The following describes the present utility model in detail with reference to specific embodiments.

[0032] In the present utility model, unless otherwise clearly defined and limited, when terms such as "arranged on", "connected", "connected to" appear, these terms 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 directly connected or connected through one or more intermediate media. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. For the direction words in the present utility model, they are for better explaining the characteristics and the relationships between the characteristics. It should be understood that when the placement direction of the present utility model changes, the directions of the characteristics and the relationships between the characteristics also change accordingly. Therefore, the direction words do not constitute an absolute limiting effect on the characteristics and the relationships between the characteristics in space, but only play a relative limiting role.

[0033] As Figures 1 to 7 shown, the present utility model provides an auxiliary power generation device, which includes an inlet pipe 5, a branch conduit 2 and an outlet pipe 6 connected in sequence. An auxiliary power generation assembly 3 is arranged in the branch conduit 2. The auxiliary power generation assembly 3 includes an auxiliary generator 30 and a conical water wheel 33. An extension part is arranged at the top of the branch conduit 2. The auxiliary generator 30 is installed on the extension part. The rotor of the auxiliary generator 30 extends into the branch conduit 2. The conical water wheel 33 is arranged in the branch conduit 2 and fixedly connected to the rotor. A plurality of groups of evenly distributed eddy current fan blades 330 are arranged on the conical water wheel 33;

[0034] An eddy current disk 31 and a flow collector cover 32 are arranged in the branch conduit 2. In the water flow direction, the eddy current disk 31, the flow collector cover 32 and the conical water wheel 33 are sequentially installed in the branch conduit 2; A plurality of groups of oblique flow fan blades 310 are evenly distributed in the eddy current disk 31. The rotation direction of the oblique flow fan blades 310 is opposite to that of the eddy current fan blades 330; The cross-section of the flow collector cover 32 gradually decreases and then increases, and one end of the eddy current fan blades 330 extends into the flow collector cover 32.

[0035] Through the above design solution, when water flows under gravity, part of the flowing water will be drawn into the branch conduit 2. The water flow in the branch conduit 2 can drive the conical water wheel 33 to rotate. The arc-shaped eddy fan blades 330 on the conical water wheel 33 can rotate with the flow of water. The conical water wheel 33 is streamlined as a whole to reduce the resistance of the conical water wheel 33 to the water flow and ensure that the conical water wheel 33 does not consume too much kinetic energy of the water flow.

[0036] The diagonal flow fan blades 310 in the eddy current disk 31 can cause the water flow flowing towards the branch conduit 2 to form a vortex. The vortex impacts the eddy fan blades 330 spirally under the guidance of the flow collector 32. The vortex can give a greater impact force to the eddy fan blades 330, enabling the eddy fan blades 330 to drive the auxiliary generator 30 to generate electricity. In this embodiment, the flow collector 32 can adjust the flow rate of the vortex, and by changing the pressure inside the water flow flowing through the branch conduit 2, the eddy fan blades 330 can obtain greater kinetic energy.

[0037] In this embodiment, an installation seat 4 for installing the auxiliary generator 30 is installed on the extension part. A bearing and a waterproof gasket are provided in the installation seat 4. The waterproof gasket can improve the sealing performance of the connection part and prevent water from seeping out from the hinge.

[0038] In this embodiment, a bracket 34 is provided in the branch conduit 2. The bracket 34 is arranged below the conical water wheel 33 and is connected to the rotor of the auxiliary generator 30. The bracket 34 can limit the jitter of the rotor during rotation, ensure that the conical water wheel 33 can be restricted to the middle position of the branch conduit 2, and prevent the conical water wheel 33 from hitting the inner wall of the branch conduit 2 when rotating. In this embodiment, a waterproof bearing is provided in the middle part of the bracket 34, and the bracket 34 is connected to the rotor of the auxiliary generator 30 through the waterproof bearing.

[0039] As Figures 8 to 11 shown, this embodiment also provides a power generation system, including a water outlet pipe 1, a water circulation component 8 and a water wheel power generation component 9, and also includes the above-mentioned auxiliary power generation device. The water circulation component 8 includes a water collection pool 80, a transfer pool 81, a water supply pool 82 and an energy storage pool 83, and also includes a water supply pump 84 and a hydraulic ram pump 85; the water wheel power generation component 9 includes a transformer group, a main generator 90, a power generation impeller 91 and a return pool 92;

[0040] The power generation impeller 91 is installed on the main generator 90. The main generator 90 is connected to the external power grid through a transformer group. The return pool 92 is arranged directly below the power generation impeller 91. The return pool 92 is connected to the water collection pool 80 through a pipeline. A water supply pump 84 is arranged in the water collection pool 80. The water supply pump 84 is used to pump the water flow in the water collection pool 80 to the transfer pool 81. The transfer pool 81 is connected to the water supply pool 82 through a pipeline. A hydraulic ram pump 85 is arranged in the water supply pool 82. The hydraulic ram pump 85 is used to pump the water flow in the water supply pool 82 to the energy storage pool 83. The water flow in the energy storage pool 83 then falls through the water outlet pipe 1 to impact the power generation impeller 91.

[0041] In this embodiment, a return pipe is arranged between the water supply pool 82 and the water collection pool 80, and a small generator 86 is arranged on the return pipe; a small generator 86 is also arranged on the pipeline between the return pool 92 and the water collection pool 80.

[0042] Through the above design scheme, during the power generation operation, the water flow flowing out of the energy storage pool 83 impacts the power generation impeller 91 under the guidance of the water outlet pipe 1. During this period, part of the water flow in the water outlet pipe 1 will flow through the branch conduit 2 to make the auxiliary generator 30 generate electricity. Subsequently, the water flow in the branch conduit 2 converges again in the water outlet pipe 1 and impacts the power generation impeller 91 together. The power generation impeller 91 continuously rotates under the impact of the water flow, driving the main generator 90 to perform the power generation operation; the water flow after impacting the power generation impeller 91 will fall into the return pool 92. Since the water collection pool 80 is located below the return pool 92, the water flow in the return pool 92 flows to the water collection pool 80 under the action of gravity, and then the water supply pump 84 pumps the water flow in the water collection pool 80 to the transfer pool 81. The water flow in the transfer pool 81 flows to the water supply pool 82 under the action of gravity and impacts the hydraulic ram pump 85. The hydraulic ram pump 85 can pump part of the water flow to the higher energy storage pool 83, and the remaining water flow will be collected by the water supply pool 82 and retransported to the water collection pool 80; through the above design scheme, the water flow can be recycled in the entire power generation system, effectively reducing the environmental requirements of the hydroelectric power equipment, and even meeting the hydroelectric power demand in water-scarce areas.

[0043] Since there are height differences between the return pool 92 and the water collection pool 80, and between the water supply pool 82 and the water collection pool 80, the small generator 86 arranged on the pipeline can further utilize this part of the water flow, reducing the electric energy consumption required during the water pumping period of the power generation system.

[0044] In this embodiment, the collecting tank 80 is located below the reflux tank 92, and the elevation difference between the collecting tank 80 and the reflux tank 92 is R1, where 10m ≤ R1 ≤ 15m; the transfer tank 81 is located above the collecting tank 80, and the elevation difference between the transfer tank 81 and the collecting tank 80 is R2, where 20m ≤ R1 ≤ 30m; the water supply tank 82 is located below the transfer tank 81, and the elevation difference between the water supply tank 82 and the transfer tank 81 is R3, where 1m ≤ R1 ≤ 10m; the energy storage tank 83 is located above the water supply tank 82, and the elevation difference between the energy storage tank 83 and the water supply tank 82 is R4, where 10m ≤ R1 ≤ 20m.

[0045] In this embodiment, the axis of the branch conduit 2 is parallel to the axis of the outlet pipe 1, and the angle formed by the axis of the inflow pipe 5 and the axis of the outlet pipe 1 is ∠1, where 40° ≤ ∠1 ≤ 50°; the angle formed by the axis of the outlet pipe 1 and the axis of the outflow pipe 6 is ∠2, where 55° ≤ ∠2 ≤ 60°.

[0046] In this embodiment, a valve switch 7 is provided on the outlet pipe 1.

[0047] In this embodiment, at least one set of auxiliary power generation devices is provided, and in the water flow direction, multiple sets of auxiliary power generation devices are arranged at intervals.

[0048] When performing power generation operations, the staff needs to first close the valve switch 7 to fill the outlet pipe 1 and the branch conduit 2 with water flow, ensuring that all the air in the outlet pipe 1 can be discharged to prevent the formation of a negative pressure zone in the branch conduit 2 that blocks the water flow; when the valve switch 7 is opened, the water flow originally filling the outlet pipe 1 falls under the action of gravity to impact the impeller for power generation. When the water flow in the outlet pipe 1 flows, the water flow in the branch conduit 2 will also be driven accordingly. At this time, the water flows in both the outlet pipe 1 and the branch conduit 2 will continue to flow, and the water flow in the branch conduit 2 will drive the conical water wheel 33 to rotate, enabling the auxiliary generator 30 to perform power generation operations. At the same time, the conical water wheel 33 can also reduce the consumption of the kinetic energy of the water flow, ensuring that the water flow flowing out of the outlet pipe 1 still has sufficient kinetic energy to impact the power generation impeller 91 to rotate.

[0049] When it is necessary to install an auxiliary power generation device on the water outlet pipe 1, the staff only need to first select a pipe with a diameter slightly smaller than the conventional water outlet pipe 1, then open through holes at the positions corresponding to the inflow pipe 5 and the outflow pipe 6 on the pipe, and then use adhesives such as water pipe glue to fix and bond the inflow pipe 5 and the outflow pipe 6 to the pipe respectively. Subsequently, the pipe can be connected to the water outlet pipe 1 using a double-pass joint. When fixing the water outlet pipe 1, the staff can use wall brackets or pipe clamps to fix the water outlet pipe 1 to the wall. To balance the weight of the water outlet pipe 1, the positions of the wall brackets or pipe clamps should be as close as possible to the position of the inflow pipe 5 or the outflow pipe 6. Of course, other installation methods can also be used to connect and install the auxiliary power generation device on the water outlet pipe 1. For example, a tee joint can be used, with one end of the tee joint connected to the inflow pipe 5 or the outflow pipe 6, and the other two ends of the tee joint arranged inside the water outlet pipe 1; an opening matching the end face of the inflow pipe 5 or the outflow pipe 6 can also be opened on the water outlet pipe 1 to install the auxiliary power generation device, etc. The above connection methods do not deviate from the essence of the present invention and fall within the protection scope of the present invention.

[0050] An auxiliary power generation device provided by the present invention, compared with the prior art, a part of the water flow in the water outlet pipe 1 will flow to the branch conduit 2. The water flow in the branch conduit 2 drives the conical water wheel 33 to rotate after being guided by the eddy current disk 31 and the current collecting cover 32. The arc-shaped eddy current fan blades 330 can reduce the consumption of the kinetic energy of the water flow. While ensuring that the water flow output from the water outlet pipe 1 can normally impact the power generation impeller 91, the power generation efficiency can be further improved. The power generation system with this auxiliary power generation device also has the above beneficial effects.

[0051] Without conflict, the above embodiments and the features in the embodiments can be combined with each other.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An auxiliary power generation device, characterized in that: It includes an inlet pipe (5), a branch conduit (2) and an outlet pipe (6) which are connected in sequence. An auxiliary power generation assembly (3) is arranged in the branch conduit (2). The auxiliary power generation assembly (3) includes an auxiliary generator (30) and a conical water wheel (33). An extension part is arranged at the top end of the branch conduit (2). The auxiliary generator (30) is installed on the extension part. The rotor of the auxiliary generator (30) extends into the branch conduit (2). The conical water wheel (33) is arranged in the branch conduit (2) and fixedly connected to the rotor. A plurality of groups of uniformly distributed eddy current fan blades (330) are arranged on the conical water wheel (33). An eddy current disk (31) and a current collecting cover (32) are arranged in the branch conduit (2). In the water flow direction, the eddy current disk (31), the current collecting cover (32) and the conical water wheel (33) are installed in the branch conduit (2) in sequence. A plurality of groups of diagonal flow fan blades (310) are uniformly distributed in the eddy current disk (31). The diagonal flow fan blades (310) rotate in the opposite direction to the eddy current fan blades (330). The cross-section of the current collecting cover (32) decreases first and then increases. One end of the eddy current fan blade (330) extends into the current collecting cover (32).

2. The auxiliary power generation device according to claim 1, characterized in that: The extension part is installed with a mounting seat (4) for installing the auxiliary generator (30). A bearing and a waterproof gasket are arranged in the mounting seat (4).

3. An auxiliary power generation device according to claim 1, characterized in that: A bracket (34) is arranged in the branch conduit (2). The bracket (34) is arranged below the conical water wheel (33) and connected to the rotor of the auxiliary generator (30).

4. A power generation system, comprising a water outlet pipe (1), a water circulation component (8) and a water turbine power generation component (9), characterized in that: It further includes the auxiliary power generation device described in any one of claims 1 to 3. The auxiliary power generation device is arranged on the water outlet pipe (1). In the water flow direction, the two ends of the auxiliary power generation device are respectively connected to the water outlet pipe (1) through the inlet pipe (5) and the outlet pipe (6). The water circulation assembly (8) includes a water collecting pool (80), a transfer pool (81), a water supply pool (82) and an energy storage pool (83), and further includes a water supply pump (84) and a hydraulic ram pump (85). The water wheel power generation assembly (9) includes a transformer group, a main generator (90), a power generation impeller (91) and a return pool (92). The power generation impeller (91) is installed on the main generator (90). The main generator (90) is connected to the external power grid through the transformer group. The return pool (92) is arranged directly below the power generation impeller (91). The return pool (92) is connected to the water collecting pool (80) through a pipeline. A water supply pump (84) is arranged in the water collecting pool (80). The water supply pump (84) is used to pump the water flow in the water collecting pool (80) to the transfer pool (81). The transfer pool (81) is connected to the water supply pool (82) through a pipeline. A hydraulic ram pump (85) is arranged in the water supply pool (82). The hydraulic ram pump (85) is used to pump the water flow in the water supply pool (82) to the energy storage pool (83). The water flow in the energy storage pool (83) then falls through the water outlet pipe (1) to impact the power generation impeller (91).

5. A power generation system according to claim 4, characterized in that: A return pipe is arranged between the water supply pool (82) and the water collecting pool (80). A small generator (86) is arranged on the return pipe. A small generator (86) is also arranged on the pipeline between the return pool (92) and the water collecting pool (80).

6. A power generation system according to claim 4, characterized in that: The collecting basin (80) is located below the reflux basin (92), and the elevation difference between the collecting basin (80) and the reflux basin (92) is R1, where 10m ≤ R1 ≤ 15m; the transfer basin (81) is located above the collecting basin (80), and the elevation difference between the transfer basin (81) and the collecting basin (80) is R2, where 20m ≤ R1 ≤ 30m; the water supply basin (82) is located below the transfer basin (81), and the elevation difference between the water supply basin (82) and the transfer basin (81) is R3, where 1m ≤ R1 ≤ 10m; the energy storage basin (83) is located above the water supply basin (82), and the elevation difference between the energy storage basin (83) and the water supply basin (82) is R4, where 10m ≤ R1 ≤ 20m.

7. A power generation system according to claim 4, characterized in that: The axis of the sub-conduit (2) is parallel to the axis of the outlet pipe (1), and the angle formed by the axis of the inlet pipe (5) and the axis of the outlet pipe (1) is ∠1, where 40° ≤ ∠1 ≤ 50°; the angle formed by the axis of the outlet pipe (1) and the axis of the outflow pipe (6) is ∠2, where 55° ≤ ∠2 ≤ 60°.

8. A power generation system according to claim 4, characterized in that: A valve switch (7) is provided on the outlet pipe (1).

9. A power generation system according to claim 4, characterized in that: At least one set of auxiliary power generation devices is provided, and multiple sets of auxiliary power generation devices are arranged at intervals in the water flow direction.

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