Water power generation system

Abstract

The utility model belongs to the technical field of hydraulic power generation, and particularly relates to a water power generation system which comprises a water diversion system and a rotating wheel power generation system. The runner power generation system comprises a runner, a potential energy cover and a generator; the rotating wheel is rotatably installed on the ground, and a center shaft of the rotating wheel is horizontally connected to an input shaft of the generator in a transmission mode. The potential energy cover is fixed relative to the ground, and an arc-shaped groove is formed in the potential energy cover; one part of the rotating wheel is rotatably arranged in the arc-shaped groove; the water diversion system comprises a main water pipe, valves and branch water pipes; one end of the branch water pipe is communicated with the main water pipe, and the other end of the branch water pipe extends to a water inlet in the inclined upper part of the arc-shaped groove; the valves are arranged on the branch water pipes and used for controlling the water flow of the branch water pipes. According to the system for generating power from water in the scheme, flowing water on the upstream of a river can be guided to the runner power generation system installed on the downstream through the water diversion system for power generation, and therefore the problems that in existing dam building power generation, the terrain requirement is high, and the building cost is high are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic power generation, and in particular relates to a water power generation system. Background Art

[0002] Existing hydroelectric power stations are often built in rivers, ditches and other geographical places where water flows. By constructing dams at locations where conditions permit, the natural drop of river water is concentrated in one place, and the dams are artificially raised to increase the water level drop to achieve power generation. This method, due to its large scale, huge cost and long construction period, will block the river and cause it to dry up. It will also change the ecological environment and require the relocation of people, thus limiting the development of using water resources to generate electricity.

[0003] Therefore, it is necessary to design a power generation system that is easy to construct, does not require the construction of dams to cut off the flow of rivers, is low in cost, and can utilize natural drop in height to generate electricity. Utility Model Content

[0004] In order to solve the above problems existing in the existing hydropower generation technology, this solution provides a water power generation system.

[0005] The technical solution adopted by the utility model is:

[0006] A water power generation system, comprising a water diversion system and a runner power generation system;

[0007] The wheel power generation system comprises a wheel, a potential energy cover and a generator; the wheel is rotatably mounted on the ground, the central axis of the wheel is horizontal and is transmission-connected to the input shaft of the generator; the potential energy cover is relatively fixed to the ground, and a circular arc groove is arranged on the potential energy cover; the circular arc groove is inclined to the horizontal direction, and a part of the wheel is rotatably placed in the circular arc groove;

[0008] The water diversion system includes a main water pipe, a valve and a branch water pipe; the main water pipe is connected to a water source, one end of the branch water pipe is connected to the main water pipe, and the other end of the branch water pipe extends to the water inlet at the upper oblique part of the arc-shaped groove and is injected with water. The valve is arranged on the branch water pipe and is used to control the water flow of the branch water pipe.

[0009] As an alternative or supplement to the above-mentioned water power generation system: the runner includes a center wheel, a potential energy plate and a potential energy frame; a transmission shaft is fixedly connected to the axis of the center wheel, and the transmission shaft is drivingly connected to the input shaft of the generator; the potential energy frame is in a circular shape and coaxial with the center wheel, and a number of potential energy plates distributed in a ring shape are connected between the center wheel and the potential energy frame.

[0010] As an alternative or supplement to the above-mentioned water power generation system: the transmission shaft is connected to a speed increaser via a coupling, and the speed increaser is connected to the input shaft of the generator via a coupling.

[0011] As an alternative or supplement to the above-mentioned water power generation system: the potential energy plate is an arc-shaped plate; in the circular arc groove, the bending direction of the arc-shaped plate is opposite to the water flow direction.

[0012] As an alternative or supplement to the above-mentioned water power generation system: the outer edge wall of the center wheel covers the notch of the arc-shaped groove, and the rim of the center wheel is close to the groove edge of the arc-shaped groove.

[0013] As an alternative or supplement to the above-mentioned water power generation system: the turbine power generation system includes two turbine power generation systems, and the turbines of the two turbine power generation systems are drivingly connected to each other.

[0014] As an alternative or supplement to the above-mentioned water power generation system: the wheel is connected to the transmission with a crank, one end of the crank is fixedly connected to the transmission shaft connected to the wheel, the other end of the crank is rotatably connected to the connecting rod, and the end of the connecting rod away from the crank is connected to the hydraulic cylinder.

[0015] As an alternative or supplement to the above-mentioned water power generation system: the hydraulic cylinder includes a piston rod, a cylinder barrel, a piston and a connecting cylinder body; one end of the piston rod is rotatably connected to the connecting rod, and the other end of the piston rod extends into the cylinder barrel and is connected to the piston; the piston is slidably arranged in the cylinder barrel and is in sealing contact with the barrel wall of the cylinder barrel; one end of the cylinder barrel away from the piston rod is connected to the connecting cylinder body, and the connecting cylinder body is fixedly connected to the ground through a movable support.

[0016] As an alternative or supplement to the above-mentioned water power generation system: the barrel cavity of the oil cylinder is divided into a rod cavity and a rodless cavity by a piston; the rod cavity and the rodless cavity are both connected to the oil tank through an oil pipe.

[0017] As an alternative or supplement to the above-mentioned hydropower generation system: two groups of valve seats are arranged in the oil tank, and each group of valve seats is provided with a one-way valve, a valve seat oil chamber and a throttle valve; the oil chamber of the oil tank is connected with the rod chamber through the one-way valve, the throttle valve and the valve seat oil chamber of one group of valve seats in sequence; the oil chamber of the oil tank is connected with the rodless chamber through the one-way valve, the throttle valve and the valve seat oil chamber of another group of valve seats in sequence; overflow valves are provided on the cavity walls of the two valve seat oil chambers.

[0018] The beneficial effects of the utility model are:

[0019] 1. The water power generation system in this scheme can divert the flowing water from the upper reaches of the river through the water diversion system, and build a platform on the ground or on the surface of the river downstream to install the water power generation system to generate electricity, thereby solving the problem of existing dam construction power generation, which has high requirements on terrain and high construction cost.

[0020] 2. In addition, the water power generation system of this scheme has the advantages of simple structure, easy manufacturing, installation and maintenance, safe and stable operation; no dam is needed to be built, no river is blocked, no river flow is cut off, no ecological environment is changed, and no immigrants are relocated; therefore, the investment is very small, the construction period is short, and the effect is quick; this technology can be widely used in poor mountainous areas, and power generation can be used as an industry to vigorously develop the economy; it can also generate electricity locally and use it nearby, without the need for a power transmission and transformation system;

[0021] 3. Finally, the water-to-electricity generation system in this scheme can also be implemented in conjunction with a water diversion project, which can both divert water and generate electricity. Extensive use of the natural drop in river water flow to generate electricity will create a large market for the development of emerging clean electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below.

[0023] Figure 1 It is a structural schematic diagram of the water power generation system in this scheme;

[0024] Figure 2 for Figure 1 A-A cross-sectional structural diagram;

[0025] Figure 3 for Figure 1 B-B cross-sectional structural diagram;

[0026] Figure 4 for Figure 3 C-C cross-sectional structural diagram;

[0027] Figure 5 Schematic diagram of the cross-sectional structure of the potential energy cover;

[0028] Figure 6 is a schematic diagram of the cross-sectional structure of the runner;

[0029] Figure 7 is a schematic diagram of the cross-sectional structure of the center wheel;

[0030] Figure 8 is a schematic diagram of the structure of the potential energy plate;

[0031] Fig. 9 This is the structural diagram of the potential energy rack.

[0032] In the figure: 1-generator; 2-coupling; 3-speed increaser; 4-bearing seat; 5-drive shaft; 6-potential energy cover; 7-rotor; 8-crank; 9-connecting rod; 10-piston rod; 11-cylinder barrel; 12-piston; 13-connecting cylinder body; 14-movable support; 15-oil pipe; 16-oil tank; 17-center wheel; 18-potential energy plate; 19-potential energy frame; 20-main water pipe; 21-valve; 22-branch water pipe; 23-throttle valve; 24-check valve; 25-valve seat; 26-valve seat oil chamber; 27-overflow valve. DETAILED DESCRIPTION

[0033] The technical solution in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings. The described embodiments are only some of the embodiments, not all of them. Based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the protection scope of this solution.

[0034] Example 1

[0035] like Figures 1 to 9 As shown, this embodiment designs a water power generation system, including a water diversion system and a turbine power generation system.

[0036] The water diversion system is used to divert water from rivers, and the water diversion system includes a main water pipe 20, a valve 21 and a branch water pipe 22; the main water pipe 20 is connected to a water source, so as to divert water from the water source to the branch water pipe 22, one end of the branch water pipe 22 is connected to the main water pipe 20, and the other end of the branch water pipe 22 extends to the water inlet at the upper oblique part of the arc-shaped groove and injects water, and the valve 21 is arranged on the branch water pipe 22 and is used to control the water flow of the branch water pipe 22. When the water in the main water pipe 20 flows into the turbine generator system through the branch water pipe 22, the turbine generator system can be driven to operate and generate electricity under the impact of water and gravity.

[0037] The wheel power generation system includes a wheel 7, a potential energy cover 6, a generator 1 and other components. The wheel 7 is rotatably installed on the ground, and the central axis of the wheel 7 is horizontal. When the wheel 7 rotates under the impact of the water flow and the action of gravity, it can be transmitted to the input shaft of the generator 1, so that the generator 1 rotates to generate electricity. The potential energy cover 6 is relatively fixed to the ground, and a circular arc groove is provided on the potential energy cover 6; the circular arc groove is inclined to the horizontal direction, and a part of the wheel 7 is rotatably placed in the circular arc groove. The circular arc groove can be used as a channel for water flow to pass through. The circular arc groove can gather the water flow, thereby ensuring the utilization of the kinetic energy and potential energy of the water.

[0038] The runner 7 includes components such as a center wheel 17, a potential energy plate 18 and a potential energy frame 19; a transmission shaft 5 is fixedly connected to the axis of the center wheel 17, and the transmission shaft 5 is drivingly connected to the input shaft of the generator 1; the potential energy frame 19 is annular and coaxial with the center wheel 17, and has two potential energy frames 18 arranged parallel to each other. A plurality of potential energy plates 18 distributed in an annular shape are connected between the center wheel 17 and the potential energy frame 19, and the corners of the outer edges of the potential energy plates 18 are respectively connected to a potential energy frame 19.

[0039] The transmission shaft 5 is connected to a speed increaser 3 via a coupling 2, and the speed increaser 3 is connected to the input shaft of the generator 1 via the coupling 2. The speed increaser 3 is used to increase the rotation speed of the generator 1 so that when the impeller 7 rotates one circle, the shaft of the generator 1 can rotate more circles.

[0040] The potential energy plate 18 is an arc-shaped piece; in the arc-shaped groove, the bending direction of the arc-shaped piece is opposite to the direction of the water flow. The reverse bending structural design of the arc-shaped piece can increase its own resistance and improve the utilization of the potential energy of the water flow.

[0041] The outer edge wall of the center wheel 17 covers the slot opening of the arc-shaped groove. When the rim of the center wheel 17 is close to the slot edge of the arc-shaped groove, the outer edge wall of the center wheel 17 can block the water from flowing out of the slot opening of the arc-shaped groove, so that after the water flows in from the water inlet at the upper oblique part of the arc-shaped groove, the water can flow out from the water outlet at the lower oblique part of the arc-shaped groove, thereby ensuring the utilization rate of the potential energy of the water flow.

[0042] like Fig. 9 As shown in (a) and (b), the potential energy frame structure is an inner ring, an outer ring, radial ribs and transverse ribs; an inner ring is connected to the two opposite sides of the inner side of the potential energy plate 18, and an outer ring is connected to the two opposite sides of the outer side of the potential energy plate 18; multiple radial ribs are connected between the inner ring and the outer ring, and multiple transverse ribs are connected between the two outer rings. The inner ring is fixedly connected to the center wheel 17.

[0043] The turbine generator system comprises two turbines, and the turbines 7 of the two turbine generator systems are drivingly connected to each other.

[0044] The power generation principle of the water power generation system in this embodiment is as follows: the water source higher than the main water pipe 20 can naturally flow into the main water pipe 20, and then flow into the branch water pipe 22. The valve 21 is opened to the set start position to release water stably. The water flows out of the branch water pipe 22 and enters the water inlet corresponding to the upper oblique part of the potential energy cover 6; the water then enters the arc-shaped groove and impacts the arc-shaped sheet of the runner 7. At the same time, the water flows from the pig kidney-shaped water tanks on both sides (see attached Figure 5), enters the lower closed space, and generates a downward resultant force on the potential energy plate 18; the distance between the center of the resultant force and the transmission shaft 5 is the lever arm, which generates a rotational torque on the transmission shaft 5; the rotational torque at this time is set to be greater than the no-load torque of the power generation system, and the impeller 7 starts to rotate and accelerates; the impeller 7 rotates and drives the transmission shaft 5 to drive the speed increaser 3 to rotate and increase the speed. When the speed of the speed increaser 3 matches the rated normal power generation speed of the generator 1, the valve 21 is opened and placed in the set normal power generation position to release water to generate electricity, and the generator 1 enters the normal power generation state.

[0045] Example 2

[0046] Based on the structure of Example 1, since the drainage speed of the branch pipe 22 is prone to fluctuation, the rotation speed of the impeller 7 is also prone to fluctuation, thereby affecting the stability of the power generation of the generator 1. Therefore, it is necessary to design a device for stabilizing the rotation speed for the impeller power generation system. Specifically:

[0047] The rotating wheel 7 is transmission-connected with a crank 8, one end of the crank 8 is fixedly connected to the transmission shaft 5 connected to the rotating wheel 7, and the other end of the crank 8 is rotationally connected to a connecting rod 9, and the end of the connecting rod 9 away from the crank 8 is connected to a hydraulic cylinder.

[0048] The hydraulic cylinder includes a piston rod 10, a cylinder barrel 11, a piston 12 and a connecting cylinder body 13; one end of the piston rod 10 is rotatably connected to the connecting rod 9, and the other end of the piston rod 10 extends into the cylinder barrel 11 and is connected to the piston 12; the piston 12 is slidably arranged in the cylinder barrel 11 and is in sealing contact with the barrel wall of the cylinder barrel 11; the end of the cylinder barrel 11 away from the piston rod 10 is connected to the connecting cylinder body 13, and the connecting cylinder body 13 is fixedly connected to the ground through a movable support 14.

[0049] The barrel cavity of the oil cylinder barrel 11 is divided into a rod chamber and a rodless chamber by a piston 12 ; the rod chamber and the rodless chamber are both connected to an oil tank 16 through an oil pipe 15 .

[0050] Two groups of valve seats 25 are arranged in the oil tank 16, and each group of valve seats 25 is provided with a one-way valve 24, a valve seat oil chamber 26 and a throttle valve 23; the oil chamber of the oil tank 16 is connected with the rod chamber through the one-way valve 24, the throttle valve 23 and the valve seat oil chamber 26 of one group of valve seats 25; the oil chamber of the oil tank 16 is connected with the rodless chamber through the one-way valve 24, the throttle valve 23 and the valve seat oil chamber 26 of another group of valve seats 25; overflow valves 27 are arranged on the walls of the two valve seat oil chambers 26. The principle of stabilizing the rotation speed of the runner 7 is as follows: the transmission shaft 5 drives the crank 8 to make a circular motion, the crank 8 drives the connecting rod 9 and the piston rod 10 to move, and makes the piston 12 reciprocate in the cylinder barrel 11. When the piston 12 moves downward (refer to Figure 1direction), negative pressure is formed in the rod chamber of the oil cylinder 11, and the oil in the oil tank 16 enters the rod chamber through the corresponding one-way valve 24, the throttle valve 23, the valve seat oil chamber 26 and the oil pipe 15 in sequence; at this time, the oil in the rodless chamber will pass through the corresponding oil pipe 15 and be squeezed into the valve seat oil chamber 26 of the other valve seat 25. Since the oil cannot flow out of the one-way valve 24 there, the oil pressure in the valve seat oil chamber 26 increases until it exceeds the rated pressure of the relief valve 27, and then the relief valve 27 opens and releases pressure, thereby achieving relief pressure control and steady speed. Similarly, when the piston 12 moves upward (refer to Figure 1 The valve structure at another valve seat 25 is used to control the pressure and stabilize the speed when the oil is turned in the direction of the oil tank 16. Due to the overflow pressure control and speed stabilization and throttling speed regulation functions of the oil circuit in the oil tank 16, the piston rod 10 can achieve a relatively uniform movement. The movement of the piston rod 10 can react on the crank 8 to make the transmission shaft 5 rotate at a relatively uniform speed, thereby ensuring that the generator 1 generates electricity continuously, safely and stably.

[0051] The above embodiments are merely examples for the purpose of clarifying the description, and are not intended to limit the implementation methods; it is not necessary and impossible to list all implementation methods exhaustively. However, obvious changes or modifications derived therefrom are still within the scope of protection of the present technology.

Claims

1. A water power generation system, characterized in that: Including water diversion system and turbine power generation system; The wheel power generation system comprises a wheel (7), a potential energy cover (6) and a generator (1); the wheel (7) is rotatably mounted on the ground, the central axis of the wheel (7) is horizontal and drivingly connected to the input shaft of the generator (1); the potential energy cover (6) is relatively fixed to the ground, and a circular arc groove is provided on the potential energy cover (6); the circular arc groove is inclined to the horizontal direction, and a part of the wheel (7) is rotatably placed in the circular arc groove; The water diversion system comprises a main water pipe (20), a valve (21) and a branch water pipe (22); the main water pipe (20) is connected to a water source, one end of the branch water pipe (22) is connected to the main water pipe (20), the other end of the branch water pipe (22) extends to the water inlet at the upper oblique part of the arc-shaped groove and is filled with water, and the valve (21) is arranged on the branch water pipe (22) and is used to control the water flow of the branch water pipe (22).

2. The water power generation system according to claim 1, characterized in that: The rotating wheel (7) comprises a central wheel (17), a potential energy plate (18) and a potential energy frame (19); a transmission shaft (5) is fixedly connected to the axis of the central wheel (17), and the transmission shaft (5) is drivingly connected to the input shaft of the generator (1); the potential energy frame (19) is annular and coaxial with the central wheel (17), and a plurality of potential energy plates (18) distributed in an annular shape are connected between the central wheel (17) and the potential energy frame (19).

3. The water power generation system according to claim 2, characterized in that: The transmission shaft (5) is connected to a speed increaser (3) via a coupling (2), and the speed increaser (3) is connected to an input shaft of a generator (1) via the coupling (2).

4. The water power generation system according to claim 2, characterized in that: The potential energy plate (18) is an arc-shaped plate; in the arc-shaped groove, the bending direction of the arc-shaped plate is opposite to the direction of water flow.

5. The water power generation system according to claim 2, characterized in that: The outer edge wall of the center wheel (17) covers the notch of the arc-shaped groove, and the wheel rim of the center wheel (17) is close to the groove edge of the arc-shaped groove.

6. The water power generation system according to claim 1, characterized in that: The wheel power generation system comprises two wheels (7) which are connected to each other in a transmission manner.

7. The water power generation system according to any one of claims 1 to 6, characterized in that: The rotating wheel (7) is transmission-connected with a crank (8), one end of the crank (8) is fixedly connected to a transmission shaft (5) connected to the rotating wheel (7), the other end of the crank (8) is rotationally connected to a connecting rod (9), and the end of the connecting rod (9) away from the crank (8) is connected to a hydraulic cylinder.

8. The water power generation system according to claim 7, characterized in that: The hydraulic cylinder comprises a piston rod (10), a cylinder barrel (11), a piston (12) and a connecting cylinder body (13); one end of the piston rod (10) is rotatably connected to a connecting rod (9), and the other end of the piston rod (10) extends into the cylinder barrel (11) and is connected to the piston (12); the piston (12) is slidably arranged in the cylinder barrel (11) and is in sealing contact with the barrel wall of the cylinder barrel (11); one end of the cylinder barrel (11) away from the piston rod (10) is connected to the connecting cylinder body (13), and the connecting cylinder body (13) is fixedly connected to the ground via a movable support (14).

9. The water power generation system according to claim 8, characterized in that: The cylinder chamber of the oil cylinder (11) is divided into a rod chamber and a rodless chamber by a piston (12); the rod chamber and the rodless chamber are both connected to an oil tank (16) via an oil pipe (15).

10. The water power generation system according to claim 9, characterized in that: Two groups of valve seats (25) are arranged in the oil tank (16), and each group of valve seats (25) is provided with a one-way valve (24), a valve seat oil chamber (26) and a throttle valve (23); the oil chamber of the oil tank (16) is connected with the rod chamber through the one-way valve (24), the throttle valve (23) and the valve seat oil chamber (26) of one group of valve seats (25); the oil chamber of the oil tank (16) is connected with the rodless chamber through the one-way valve (24), the throttle valve (23) and the valve seat oil chamber (26) of the other group of valve seats (25); and overflow valves (27) are arranged on the walls of the two valve seat oil chambers (26).

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