Integrated Energy Generation System Based on the Pumped Storage Environment

Abstract

The present invention relates to a comprehensive energy power generation system based on the pumped-storage environment. The technical solution adopted by the present invention is as follows: The system includes a photovoltaic power generation module that floats on the water surface of the upper reservoir and / or the lower reservoir of the pumped-storage power station via a floating platform; a plurality of anchoring mechanisms fixedly arranged around the photovoltaic power generation module. Each anchoring mechanism has a pulley block with a fixed position and a traction cable wound around the pulley block. The first end of the traction cable is connected to the surrounding frame of the photovoltaic power generation module, and the second end of the traction cable suspends a heavy block; a submersible generator is arranged corresponding to each traction cable and can be driven by the traction cable to generate electricity for the corresponding submersible generator. The present invention is applicable to the technical field of pumped storage technology.

Description

Technical Field

[0001] The present invention relates to a comprehensive energy power generation system based on the pumped - storage environment, and is applicable to the technical field of pumped - storage technology. Background Art

[0002] At present, the installed capacity of solar energy and wind energy has developed rapidly. Affected by the instability and randomness of clean energies such as solar energy and wind energy, the power grid has an increasing demand for large - scale energy storage, and the requirements are also getting higher and higher. To meet the demand for large - scale energy storage, pumped - storage power stations are the first choice for the large - scale development of energy storage technology.

[0003] Pumped - storage power stations have the same characteristics as conventional hydropower stations in terms of flexible start - up and shutdown. They can respond quickly to the requirements of the power grid for load response, can suppress the fluctuations of new energy sources such as wind power and photovoltaic power, and have the advantages of large scale, long cycle life, and low operating costs.

[0004] In addition to the terrain height difference, the construction of pumped - storage power stations also requires a large space to set up upper and lower storage reservoirs. Therefore, pumped - storage power stations, especially the upper reservoir waters, have new - energy power generation conditions of "good lighting and high wind speed". At present, the energy storage and power generation means of pumped - storage power stations are single, and their excellent new - energy endowments have not been well developed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: in view of the above - mentioned problems, to provide a comprehensive energy power generation system based on the pumped - storage environment.

[0006] The technical solution adopted by the present invention is: a comprehensive energy power generation system based on the pumped - storage environment, which is characterized by including:

[0007] A photovoltaic power generation module, floating on the water surface of the upper reservoir and / or lower reservoir of the pumped - storage power station via a floating platform;

[0008] There are multiple anchoring mechanisms, which are fixedly arranged around the photovoltaic power generation module. Each anchoring mechanism has a pulley group with a fixed position and a traction cable wound around the pulley group. The first end of the traction cable is connected to the surrounding frame of the photovoltaic power generation module, and the second end of the traction cable suspends a heavy block;

[0009] A submersible generator, which is arranged corresponding to the traction cable one by one, and can be driven by the traction cable to drive the corresponding submersible generator to generate electricity.

[0010] It further includes:

[0011] A water - level sensor, used to obtain the water - level information of the upper reservoir and / or lower reservoir of the pumped - storage power station;

[0012] A limit latch, which is arranged corresponding to the traction cable one by one and is located between the submersible generator and the floating platform;

[0013] A locking control unit, connected to the water level sensor and the limit lock, can control the limit lock to lock the traction cable when the water level information of the water level sensor shows that the current water level is at the first preset water level, and can control the limit lock to release the traction cable when the water level information of the water level sensor shows that the current water level is at the second preset water level;

[0014] When at the first preset water level, the distance between the photovoltaic power generation module on the water surface and the pulley block is the first distance; when at the second preset water level, the distance between the photovoltaic power generation module on the water surface and the pulley block is the second distance, and the first distance is greater than the second distance.

[0015] The first preset water level includes the highest water level and the lowest water level within the corresponding reservoir water level change range, the second preset water level includes the intermediate water level within the corresponding reservoir water level change range, and the installation position of the pulley block corresponds to the intermediate water level.

[0016] The input end of the submersible generator is equipped with a gear, and at least part of the traction cable is a chain structure that can cooperate with the gear on the submersible generator.

[0017] Anti-collision and shock-absorbing devices are provided on the surrounding frames of the photovoltaic power generation module.

[0018] Cooling heat pipes are arranged between the photovoltaic power generation modules. The heat pipes are fixed by a floating platform, and the bottom is inserted into the liquid surface of the reservoir.

[0019] At least one wind turbine is provided within the range of the upper reservoir and / or the lower reservoir of the pumped-storage power station.

[0020] The fan tower of at least one of the wind turbines is arranged on the top of the anchoring mechanism.

[0021] A basin diversion hydroelectric power module is provided at the bottom of the basin of the upper reservoir. The basin diversion hydroelectric power module is provided with a diversion acceleration pipe to accelerate the water flow impact on the water turbine.

[0022] The basin diversion hydroelectric power module includes:

[0023] A basin diversion platform, fixed to the bottom of the basin, the top of the platform is not higher than the lowest water level of the reservoir, and at least part of the side wall of the platform has a flow-through gap with the inner wall of the reservoir;

[0024] A hydroelectric power generation mechanism, arranged on the basin diversion platform, which has a turbine chamber located below the basin diversion platform and a water turbine located in the turbine chamber;

[0025] At least one of the diversion acceleration pipes, the water inlet of the diversion acceleration pipe is located on the side wall of the basin diversion platform, communicates with the reservoir basin through the flow-through gap, and the water outlet of the diversion acceleration pipe communicates with the turbine chamber.

[0026] The beneficial effects of the present invention are as follows: In the present invention, the photovoltaic power generation module and the floating platform rise and fall with the water level in the reservoir. During the process of the photovoltaic power generation module rising and falling with the water level, the distance between the photovoltaic power generation module and the pulley group changes synchronously. When the distance increases, the photovoltaic power generation module drives the heavy block to move upward through the traction cable. When the distance decreases, the heavy block moves downward under the action of its own gravity and tensions the traction cable. The traction cable can drive the submersible generator to generate electricity during the process of being pulled by the photovoltaic power generation module and the heavy block.

[0027] When the water level information of the water level sensor shows that the current water level is at the first preset water level, the present invention controls the limit latch to lock the traction cable, that is, when the heavy block is pulled to the highest point, the latch is used for limit; when the water level information of the water level sensor shows that the current water level is at the second preset water level, the present invention controls the limit latch to release the traction cable, and the heavy block falls to cooperate with the submersible generator to realize gravity energy storage power generation.

[0028] The present invention develops photovoltaic, wind power and gravity energy storage in the upper and lower reservoir areas, sets a water turbine at the water outlet of the upper reservoir area, and uses the drainage acceleration pipe to guide the flowing water to impact the water turbine, so as to build an intensive energy storage base of "wind, light, water, storage".

[0029] The present invention accelerates the confluence of the naturally discharged water through the variable-diameter drainage acceleration pipe to impact the water turbine, so as to accelerate the originally non-power-generating low-pressure water flow into an impact fluid capable of generating electricity, and add a set of water turbine generator sets to the pumped-storage power station. Description of the Drawings

[0030] Figure 1 It is a schematic structural diagram of the upper reservoir in the embodiment.

[0031] Figure 2 It is a schematic structural diagram of the lower reservoir in the embodiment.

[0032] Figure 3 It is a schematic structural diagram of the photovoltaic power generation module in the embodiment.

[0033] Figure 4 It is a schematic structural diagram of the gravity energy storage power generation module in the embodiment.

[0034] Figure 5 It is a schematic plan layout diagram of the low-pressure water flow power generation module in the embodiment.

[0035] Figure 6 It is a schematic cross-sectional structural diagram of the low-pressure water flow power generation module in the embodiment.

[0036] Figure 7 It is a schematic plan layout diagram of the drainage acceleration pipe in the embodiment.

[0037] Figure 8Cross-sectional view of the drainage acceleration pipe in the embodiment.

[0038] 101, Photovoltaic power generation module; 102, Floating platform; 103, Cooling heat pipe; 104, Cable fixing device;

[0039] 201, Traction cable; 202, Steering adjustment pulley; 203, Sling; 204, Limit latch; 205, Gear; 206, Submersible generator; 207, Weight;

[0040] 301, Basin drainage platform; 302, Inlet side trash rack; 303, Turbine; 304, Generator; 305, Power generation plant; 306, Outlet valve; 307, Penstock; 308, Upper reservoir inlet; 309, Inlet valve; 310, Outlet side trash rack; 311, Drainage acceleration pipe;

[0041] 401, Wind turbine. Specific implementation mode

[0042] As Figures 1 to 2 shown, this embodiment is a comprehensive energy power generation system based on the pumped-storage environment, and has a photovoltaic power generation module 101, a gravity energy storage power generation module, a wind power generation module, a low-pressure water flow power generation module, etc.

[0043] In this example, the photovoltaic power generation module 101 floats on the water surfaces of the upper reservoir and the lower reservoir of the pumped-storage power station through the floating platform 102, and can rise and fall with the water level of the reservoir. Anti-collision and shock-absorbing devices are provided on the surrounding frames of the photovoltaic power generation module 101, and a plurality of cable fixing devices 104 are evenly provided.

[0044] As Figure 3 shown, in this embodiment, a cooling heat pipe 103 is arranged between the photovoltaic power generation panels of the photovoltaic power generation module 101. The heat pipe is fixed by the floating platform 102, and the bottom is inserted into the liquid surface of the reservoir. The heat of the photovoltaic power generation panel is transferred to the water in the reservoir through the heat pipe to realize the cooling of the panel.

[0045] As Figure 4 shown, in this embodiment, the gravity energy storage power generation module has a plurality of anchoring mechanisms arranged around the photovoltaic power generation module 101. Each anchoring mechanism is provided with a pulley block and a traction cable 201. The pulley block is fixed in the anchoring mechanism, and the traction cable 201 is wound around the pulley block. One end of the traction cable is connected to the corresponding cable fixing device on the surrounding frame of the photovoltaic power generation module 101, and the other end of the traction cable 201 suspends the weight 207.

[0046] In this example, the pulley block has a steering adjustment pulley 202 rotatably installed on the side surface of the anchoring mechanism and a sling 203 located on the inner top surface of the anchoring mechanism. The traction cable 201 is wound around the steering adjustment pulley 202 and passes through the sling 203.

[0047] In this embodiment, the gravity energy storage power generation module further includes a water level sensor, a submersible generator 206, a limit latch 204, a latch control unit, etc. The water level sensor is used to collect the water level information of the upper and lower reservoirs of the corresponding pumped storage power station. The submersible generator 206 is arranged in one-to-one correspondence with the traction cable 201 and is located between the pulley block and the weight 207. A gear 205 is installed at the input end of the submersible generator. At least a part of the traction cable 201 is a chain structure that can cooperate with the gear on the submersible generator. The traction cable 201 is wound around the gear 205 at the input end of the submersible generator 206. The limit latch 204 is arranged in one-to-one correspondence with the gear 205 of the submersible generator 206 and can be used to lock and release the traction cable 201 by locking and releasing the gear.

[0048] In this example, the latch control unit is electrically connected to the water level sensor and the limit latch 204. It can control the limit latch 204 to lock the traction cable 201 when the water level information of the water level sensor shows that the current water level is at the first preset water level, and can control the limit latch to release the traction cable 201 when the water level information of the water level sensor shows that the current water level is at the second preset water level.

[0049] When at the first preset water level, the distance between the cable fixing device of the photovoltaic power generation module 101 on the water surface and the corresponding pulley block is the first distance L1, and the distance between the pulley block and the weight 207 is l1; when at the second preset water level, the distance between the cable fixing device of the photovoltaic power generation module 101 on the water surface and the corresponding pulley block is the second distance L2, and the distance between the pulley block and the weight 207 is l2. When selecting the first and second preset water levels, it is ensured that the first distance L1 is much larger than the second distance L2. And because the length of the traction cable 201 is constant, L1 + l1 = L2 + l2, so l2 is greater than l1, which in turn leads to the height of the weight 207 at the first preset water level being much higher than the height of the weight at the second preset water level.

[0050] In this embodiment, the first preset water level includes the highest water level and the lowest water level in the corresponding reservoir water level change range, and the second preset water level includes the intermediate water level in the corresponding reservoir water level change range. The installation position of the pulley block corresponds to the intermediate water level, so that the distance between the cable fixing device and the corresponding pulley block of the photovoltaic power generation module 101 is the shortest when the photovoltaic power generation module 101 is at the intermediate water level.

[0051] In this example, the weight 207 is connected through the steering adjustment pulley 202, the lifting ring 203, and the gear 205 of the submersible generator 206. The traction cable 201 adopts a chain structure. The steering adjustment pulley is provided with a gear and the gear of the submersible generator passes through the chain gap of the traction cable. The traction cable 201 drives the gear of the steering adjustment pulley and the gear of the submersible generator to rotate, driving the height change of the weight 207.

[0052] In this embodiment, the submersible generator 206 is connected to the gear 205. The traction cable drives the rotation of the gear of the submersible generator, and the gear of the submersible generator transmits the falling gravitational inertia of the weight to the submersible generator through the shaft to generate electricity.

[0053] When the reservoir basin water level gradually rises from the lowest water level, the floating platform of the photovoltaic power generation module floats upward. The weight remains at a constant height because the limit latch locks the gear of the submersible generator. The distance between the pulley block and the cable fixing device decreases, and the traction cable between the two gradually becomes slack. When the reservoir basin water level rises to the intermediate water level, the water level sensor sends a signal, and the limit latch releases. The weight pulls the traction cable and quickly drops to the lowest point, driving the gear of the submersible generator to rotate rapidly to generate electricity. When the reservoir basin water level rises from the intermediate water level to the highest water level, the traction cable gradually pulls the weight up to the high point until the highest water level. The water level sensor sends a signal, and the limit latch locks the gear of the submersible generator, and the weight remains at the highest point.

[0054] When the reservoir basin water level gradually drops from the highest water level, the weight remains at a constant height because the limit latch locks the gear of the submersible generator. When the reservoir basin water level drops to the intermediate water level, the water level sensor sends a signal, and the limit latch releases. The weight pulls the traction cable and quickly drops to the lowest point, driving the gear of the submersible generator to rotate rapidly to generate electricity. When the reservoir basin water level drops from the intermediate water level to the lowest water level, the traction cable gradually pulls the weight up to the high point until the lowest water level. The floating photovoltaic power generation unit lands on the top of the reservoir basin drainage platform. The water level sensor sends a signal, and the limit latch locks the gear of the submersible generator, and the weight remains at the highest point, preparing for energy storage for the next stage of gravity power generation.

[0055] In this embodiment, the steering adjustment pulley can rotate at any angle to ensure that the traction cable does not get stuck during the rising and falling process of the floating photovoltaic power generation unit. Multiple gears are arranged on the adjustment pulley to ensure that the tooth tips of the traction gears pass through the annular gap of the traction cable, and the traction cable does not become disengaged. The adjustment pulley cooperates with the hanging ring to smoothly connect the traction cable with the heavy object.

[0056] In this embodiment, the wind power generation module includes at least one wind turbine 401 arranged in the upper reservoir and the lower reservoir. The wind turbine can be fixed on the anchoring mechanism of the gravity energy storage power generation module to make full use of the environmental resources of the pumped-storage power station and fully develop the excellent new energy endowment of the pumped-storage power station itself. In this example, the wind turbine is combined with the fixed gravity power generation unit to achieve multiple uses of one tower, simplify the system structure, and reduce costs.

[0057] As Figures 5 to 6 shown, in this embodiment, the low-pressure water flow power generation module has a reservoir basin diversion hydraulic power generation module arranged at the bottom of the reservoir basin of the upper reservoir. The reservoir basin diversion hydraulic power generation module is provided with a diversion acceleration pipe 311 to accelerate the water flow and impact the water turbine 303.

[0058] In this example, the reservoir basin diversion and hydropower generation module includes: a reservoir basin diversion platform 301, a hydropower generation mechanism, and multiple diversion and acceleration pipes 311. The reservoir basin diversion platform 301 is fixed to the bottom of the reservoir basin, and the top of the platform is not higher than the lowest water level of the reservoir. There is a flow-through gap between at least part of the side wall of the platform and the inner wall of the reservoir. The hydropower generation mechanism is arranged on the reservoir basin diversion platform 301, which has a turbine chamber located below the reservoir basin diversion platform and a water turbine 303 located in the turbine chamber. The water inlet of the diversion and acceleration pipe is located on the side wall of the reservoir basin diversion platform, communicates with the reservoir basin through the flow-through gap, and the water outlet of the diversion and acceleration pipe communicates with the turbine chamber.

[0059] In this example, the water inlet of the diversion and acceleration pipe 311 is located on the side of the reservoir basin diversion platform, and the water outlet of the diversion and acceleration pipe is located at the water inlet of the water turbine in the power house. As Figures 7 to 8 shown, the diversion and acceleration pipe 311 is a variable-diameter pipe, which successively includes a large-diameter diversion section, a transition section, and a small-diameter diversion section from the water inlet to the water outlet. The transition section is used to realize the transition from the large-diameter diversion section to the small-diameter diversion section, and the variable diameter is used to realize the diversion and acceleration of the water flow.

[0060] In this example, the reservoir basin diversion platform 301 can be used for the floating photovoltaic power generation unit, the power house 305, and its access road. In addition, the reservoir regulation mechanism can also be rooted on the reservoir basin diversion platform.

[0061] When the power house is arranged at the center of the upper reservoir basin, at this time, the diversion and acceleration pipes divert water from four sides to the inlet trash rack of the water turbine; when the power house is arranged on the side of the upper reservoir basin, at this time, the diversion and acceleration pipes divert water from three sides to the inlet trash rack of the water turbine.

[0062] In this embodiment, the water inlet and the water outlet of the upper reservoir are separately and independently arranged, and the water inlet and the water outlet of the upper reservoir are at least separated by a distance of half of the reservoir basin. When the power house is arranged at the center of the reservoir basin, the upper reservoir water inlet 308 is arranged near the side of the reservoir basin; when the power house is arranged on the side of the reservoir basin, the upper reservoir water inlet 308 is arranged on the opposite side of the basin side.

[0063] In this example, during the reservoir water storage period, the outlet valve 306 is closed and the inlet valve 309 is opened. At this time, the water flow enters the upper reservoir from the inlet valve 309 and the inlet side trash rack 302; during the power generation period of the power station, the outlet valve 306 is opened and the inlet valve 309 is closed. The water flow enters the penstock 307 from the outlet side trash rack 310, the diversion and acceleration pipe 311, the water turbine 303, and the outlet valve 306. At this time, the water flow sent by the diversion and acceleration pipe 311 impacts the water turbine 303 to realize the power generation process of the outlet diversion power generation unit.

[0064] In this embodiment, the main structure of the power generation plant 305 is arranged above the basin drainage platform 301. A generator 304 is installed inside the power generation plant, and a water turbine 303 is placed at the lowest depression of the upper reservoir, buried deep below the liquid level and lower than the lowest water level of the upper reservoir. The access road to the power generation plant also takes root on the top of the basin drainage platform. During the operation stage, the power generation plant can be accessed through the operation channel.

[0065] This embodiment makes full use of the environmental resources of the pumped-storage power station, fully develops the excellent new energy endowment of the pumped-storage power station itself, realizes the coupling of new energy and energy storage by using wind power, water power, photovoltaic power and gravity, and creates an intensive energy storage technology of "wind, light, water and storage".

Claims

1. An integrated energy generation system based on a pumped-storage environment, characterized in that, Including: A photovoltaic power generation module, which floats on the water surface of the upper reservoir and / or the lower reservoir of the pumped-storage power station via a floating platform and can rise and fall with the water level of the reservoir; An anchoring mechanism, with multiple ones, fixedly arranged around the photovoltaic power generation module. Each anchoring mechanism has a pulley block with a fixed position and a traction cable wound around the pulley block. The first end of the traction cable is connected to the surrounding frame of the photovoltaic power generation module, and the second end of the traction cable suspends a heavy block; the length of the traction cable is constant; A submersible generator, arranged corresponding to the traction cable one by one, and can be driven by the traction cable to drive the corresponding submersible generator to generate electricity; A water level sensor, used to obtain the water level information of the upper reservoir and / or the lower reservoir of the pumped-storage power station; A limit latch, arranged corresponding to the traction cable one by one and located between the submersible generator and the floating platform; A latch control unit, connected to the water level sensor and the limit latch, can control the limit latch to lock the traction cable when the water level information of the water level sensor shows that the current water level is at a first preset water level, and can control the limit latch to release the traction cable when the water level information of the water level sensor shows that the current water level is at a second preset water level; When at the first preset water level, the distance between the photovoltaic power generation module on the water surface and the pulley block is a first distance; when at the second preset water level, the distance between the photovoltaic power generation module on the water surface and the pulley block is a second distance, and the first distance is greater than the second distance; The first preset water level includes the highest water level and / or the lowest water level within the corresponding reservoir water level change range, the second preset water level includes the intermediate water level within the corresponding reservoir water level change range, and the installation position of the pulley block corresponds to the intermediate water level; A basin drainage hydroelectric power generation module is provided at the bottom of the basin of the upper reservoir, and the basin drainage hydroelectric power generation module is provided with a drainage acceleration pipe to accelerate the water flow impact on the water turbine.

2. The integrated energy generation system based on the pumped-storage environment according to claim 1, wherein: A gear is installed at the input end of the submersible generator, and at least part of the traction cable is a chain structure that can cooperate with the gear on the submersible generator.

3. The integrated energy power generation system based on the pumped-storage energy storage environment according to claim 1, wherein: An anti-collision and shock-absorbing device is arranged on the surrounding frame of the photovoltaic power generation module.

4. The integrated energy power generation system based on the pumped storage environment according to claim 1, wherein: Cooling heat pipes are arranged between the photovoltaic power generation modules. The heat pipes are fixed by the floating platform, and the bottom is inserted into the liquid surface of the reservoir.

5. The integrated energy power generation system based on the pumped storage environment according to claim 1, wherein: At least one wind turbine is provided within the range of the upper reservoir and / or the lower reservoir of the pumped-storage power station.

6. The integrated energy power generation system based on the pumped storage environment according to claim 5, wherein: The fan tower of at least one of the wind turbines is arranged on the top of the anchoring mechanism.

7. The integrated energy power generation system based on the pumped storage environment according to claim 1, wherein The basin drainage hydroelectric power generation module includes: A basin drainage platform, fixed to the bottom of the basin, the top of the platform is not higher than the lowest water level of the reservoir, and there is a flow-through gap between at least part of the side wall of the platform and the inner wall of the reservoir; A hydroelectric power generation mechanism, arranged on the basin drainage platform, which has a turbine chamber located below the basin drainage platform and a water turbine located in the turbine chamber; At least one of the drainage acceleration pipes, the water inlet of the drainage acceleration pipe is located on the side wall of the basin drainage platform, communicates with the reservoir basin through the flow-through gap, and the water outlet of the drainage acceleration pipe communicates with the turbine chamber.

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