Comprehensive energy power generation system based on pumped storage environment

Abstract

The invention relates to a comprehensive energy power generation system based on a pumped storage environment. According to the technical scheme, the system comprises a photovoltaic power generation module which floats on the water surface of an upper reservoir and / or a lower reservoir of the pumped storage power station through a floating platform; the plurality of anchoring mechanisms are fixedly arranged around the photovoltaic power generation module, each anchoring mechanism is provided with a pulley block with a fixed position and a traction inhaul cable wound on the pulley block, the first end of the traction inhaul cable is connected with a frame around the photovoltaic power generation module, and a heavy block is suspended at the second end of the traction inhaul cable; and the submersible generators are arranged in one-to-one correspondence with the traction cables, and the corresponding submersible generators can be driven by the traction cables to generate power. The invention is suitable for the technical field of pumped storage.

Description

Technical Field

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

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

[0003] Pumped-storage power stations have the same flexible start and stop features as conventional hydropower stations. They can meet the grid's requirements for rapid load response and can smooth out fluctuations in new energy sources such as wind power and photovoltaic power. They also have the advantages of large scale, long cycle life and low operating costs.

[0004] In addition to the height difference of the terrain, the construction of a pumped storage power station also requires a large space to set up the upper and lower reservoirs. Therefore, the pumped storage power station, especially the upper reservoir water area, has the new energy power generation conditions of "good lighting and high wind speed". At present, the energy storage and power generation methods of pumped storage power stations are single, and their excellent new energy endowment has 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, a comprehensive energy power generation system based on a pumped storage environment is provided.

[0006] The technical solution adopted by the present invention is: a comprehensive energy generation system based on a pumped storage environment, characterized in that it includes: The photovoltaic power generation module floats on the water surface of the upper reservoir and / or lower reservoir of the pumped storage power station via a floating platform; A plurality of anchoring mechanisms are fixedly arranged around the photovoltaic power generation module, each anchoring mechanism has a fixed pulley block and a traction cable wound around the pulley block, a first end of the traction cable is connected to the frame around the photovoltaic power generation module, and a weight is suspended at the second end of the traction cable; The submersible generators are arranged one by one corresponding to the traction cables, and the traction cables can drive the corresponding submersible generators to generate electricity.

[0007] Also includes: A water level sensor, used to obtain water level information of the upper reservoir and / or lower reservoir of a pumped storage power station; A limit lock, which is arranged one-to-one with the traction cables and is located between the submersible generator and the floating platform; A lock control unit is connected to the water level sensor and the limit lock, and 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 a 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 a second preset water level; When at a 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 a 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.

[0008] The first preset water level includes the highest water level and the lowest water level in the corresponding reservoir water level variation range, the second preset water level includes the middle water level in the corresponding reservoir water level variation range, and the installation position of the pulley block corresponds to the middle water level.

[0009] The input end of the submersible generator is provided with a gear, and at least a portion of the traction cable is a chain structure that can cooperate with the gear on the submersible generator.

[0010] Anti-collision and shock-absorbing devices are arranged on the frames surrounding the photovoltaic power generation module.

[0011] A cooling heat pipe is arranged between the photovoltaic power generation modules. The heat pipe is fixed by a floating platform, and the bottom of the heat pipe is inserted into the liquid surface of the reservoir.

[0012] At least one wind turbine is arranged within the upper reservoir and / or the lower reservoir of the pumped storage power station.

[0013] The wind turbine tower of at least one wind turbine is arranged on the top of the anchoring mechanism.

[0014] A reservoir basin diversion hydroelectric power generation module is provided at the bottom of the reservoir basin of the upper reservoir, and the reservoir basin diversion hydroelectric power generation module is provided with a diversion accelerating tube to accelerate the water flow to impact the turbine.

[0015] The reservoir basin diversion hydropower generation module comprises: The reservoir basin drainage platform is fixed to the bottom of the reservoir basin, the top of the platform is not higher than the lowest water level of the reservoir, and there is a flow gap between at least part of the side wall of the platform and the inner wall of the reservoir; A hydroelectric power generation mechanism is arranged on the reservoir drainage platform, and comprises an engine room located at the lower part of the reservoir drainage platform and a water turbine located in the engine room; At least one drainage acceleration pipe has a water inlet located on the side wall of the drainage platform of the reservoir basin, connected to the reservoir basin through the flow gap, and a water outlet connected to the turbine room.

[0016] The beneficial effects of the present invention are as follows: the photovoltaic power generation module and the floating platform in the present invention rise and fall with the rise and fall of the water level in the reservoir, the distance between the photovoltaic power generation module and the pulley block changes synchronously with the rise and fall of the water level, when the distance increases, the photovoltaic power generation module drives the weight block to move upward through the traction cable, and when the distance decreases, the weight block moves downward under the action of its own gravity and tensions the traction cable, and the traction cable can drive the submersible generator to generate electricity while being pulled by the photovoltaic power generation module and the weight block.

[0017] The present invention controls 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 a first preset water level, that is, when the weight is pulled to reach the highest point, the lock is used to limit the position; when the water level information of the water level sensor shows that the current water level is at a second preset water level, the limit lock is controlled to release the traction cable, and the weight falls to cooperate with the submersible generator to realize gravity energy storage and power generation.

[0018] The present invention develops photovoltaic, wind power and gravity energy storage in the upper and lower reservoir areas, sets a turbine at the water outlet of the upper reservoir area, uses drainage accelerator tubes to divert water to impact the turbine, and creates an intensive energy storage base of "wind, light, water and storage".

[0019] The present invention accelerates the naturally released water to flow into the impact turbine through the diversion accelerating pipe with variable diameter, thereby accelerating the low-pressure water flow that cannot generate electricity originally into an impact fluid that can generate electricity, thereby adding a set of water turbine generator system to the pumped storage power station. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the upper reservoir in the embodiment.

[0021] Figure 2 It is a schematic diagram of the structure of the lower reservoir in the embodiment.

[0022] Figure 3 Schematic diagram of the structure of the photovoltaic power generation module in the embodiment.

[0023] Figure 4 It is a structural schematic diagram of the gravity energy storage power generation module in the embodiment.

[0024] Figure 5 Schematic diagram of the planar layout of the low-pressure water flow power generation module in the embodiment.

[0025] Figure 6 Schematic diagram of the cross-sectional structure of the low-pressure water flow power generation module in the embodiment.

[0026] Figure 7 Schematic diagram of the planar layout of the drainage acceleration tube in the embodiment.

[0027] Figure 8 4 is a cross-sectional view of the drainage accelerating tube in the embodiment.

[0028] 101. Photovoltaic power generation module; 102. Floating platform; 103. Cooling heat pipe; 104. Cable fixing device; 201, traction cable; 202, steering adjustment pulley; 203, lifting ring; 204, limit lock; 205, gear; 206, submersible generator; 207, weight block; 301. Reservoir drainage platform; 302. Trash rack on water inlet side; 303. Turbine; 304. Generator; 305. Power plant; 306. Water outlet valve; 307. Penstock; 308. Upper reservoir water inlet; 309. Water inlet valve; 310. Trash rack on water outlet side; 311. Drainage acceleration pipe; 401. Wind turbine. DETAILED DESCRIPTION

[0029] like Figure 1~Figure 2 As shown, this embodiment is a comprehensive energy generation system based on a pumped storage environment, which has a photovoltaic power generation module 101, a gravity energy storage power generation module, a wind power generation module and a low-pressure water flow power generation module.

[0030] In this example, the photovoltaic power generation module 101 floats on the water surface of the upper and lower reservoirs of the pumped storage power station via a floating platform 102, and can rise and fall with the water level of the reservoir. The photovoltaic power generation module 101 is provided with anti-collision and shock-absorbing devices and multiple cable fixing devices 104 are evenly arranged on the surrounding frames.

[0031] like Figure 3 As 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 a 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 achieve cooling of the panel.

[0032] like Figure 4 As shown, the gravity energy storage power generation module in this embodiment has multiple 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 frame around the photovoltaic power generation module 101, and the other end of the traction cable 201 suspends a weight block 207.

[0033] In this example, the pulley block comprises a steering adjustment pulley 202 rotatably mounted on the side of the anchoring mechanism and a lifting ring 203 located on the top surface of the anchoring mechanism. The traction cable 201 is wound around the steering adjustment pulley 202 and passed through the lifting ring 203 .

[0034] In this embodiment, the gravity energy storage power generation module also has a water level sensor, a submersible generator 206, a limit lock 204 and a lock control unit, wherein the water level sensor is used to adopt the water level information of the upper and lower reservoirs of the corresponding pumped storage power station; the submersible generator 206 is arranged in a one-to-one correspondence with the traction cable 201 and is located between the pulley block and the weight 207. The input end of the submersible generator is equipped with a gear 205. At least 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 lock 204 is arranged in a 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.

[0035] In this example, the lock control unit circuit is connected to the water level sensor and the limit lock 204, and can control the limit lock 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 lock 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.

[0036] 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 since the length of the traction cable 201 is constant, L1+l1=L2+l2, so l2 is greater than l1, which results in 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.

[0037] In this embodiment, the first preset water level includes the highest water level and the lowest water level of the corresponding reservoir water level variation range, and the second preset water level includes the middle water level of the corresponding reservoir water level variation range. The installation position of the pulley block corresponds to the middle water level, so that the distance between the cable fixing device and the corresponding pulley block is the shortest when the photovoltaic power generation module 101 is located at the middle water level.

[0038] 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, and the steering adjustment pulley setting gear and the submersible generator gear pass 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 weight 207 to change its height.

[0039] In this embodiment, the submersible generator 206 is connected to the gear 205, and the traction cable drives the gear of the submersible generator to rotate. The gear of the submersible generator transmits the gravity inertia of the falling weight to the submersible generator through the shaft to generate electricity.

[0040] When the liquid level in the reservoir basin gradually rises from the lowest water level, the floating platform of the photovoltaic power generation module floats up, and the weight block keeps the same height because the limit lock locks the submersible generator gear, the distance between the pulley block and the cable fixing device is reduced, and the traction cable between the two is gradually relaxed; when the liquid level in the reservoir basin rises to the middle water level, the water level sensor sends a signal, the limit lock is released, and the weight block pulls the traction cable and quickly drops to the lowest point, driving the submersible generator gear to rotate rapidly to generate electricity; when the liquid level in the reservoir basin rises from the middle water level to the highest water level, the traction cable gradually pulls the weight block to the highest point until the highest water level, the water level sensor sends a signal, the limit lock locks the submersible generator gear, and the weight block remains at the highest point.

[0041] When the liquid level in the reservoir basin gradually drops from the highest water level, the weight block maintains a constant height because the limit lock locks the submersible generator gear; when the liquid level in the reservoir basin drops to the middle water level, the water level sensor sends a signal, the limit lock is released, and the weight block pulls the traction cable and quickly drops to the lowest point, driving the submersible generator gear to rotate rapidly to generate electricity; when the liquid level in the reservoir basin drops from the middle water level to the lowest water level, the traction cable gradually pulls the weight block up to the highest point until the lowest water level, and the suspended photovoltaic power generation unit falls on the top of the reservoir basin drainage platform, the water level sensor sends a signal, the limit lock locks the submersible generator gear, and the weight block remains at the highest point, preparing to store power for the next stage of gravity power generation.

[0042] In this embodiment, the steering adjustment pulley can rotate at any angle to ensure that the traction cable does not get stuck during the ascent and descent of the suspended photovoltaic power generation unit. Multiple gears are arranged on the adjustment pulley to ensure that the tooth tip of the traction gear passes through the annular gap of the traction cable and the traction cable does not fall out of the air. The adjustment pulley cooperates with the lifting ring to smoothly connect the traction cable with the heavy object.

[0043] The wind power generation module in this embodiment 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.

[0044] like Figure 5~Figure 6 As shown, in this embodiment, the low-pressure water flow power generation module has a reservoir basin diversion hydropower generation module arranged at the bottom of the reservoir basin of the upper reservoir. The reservoir basin diversion hydropower generation module is provided with a diversion acceleration tube 311 to accelerate the water flow to impact the turbine 303.

[0045] The reservoir basin diversion hydroelectric power generation module in this example includes: a reservoir basin diversion platform 301, a hydroelectric power generation mechanism and a plurality of diversion acceleration tubes 311, wherein the reservoir basin diversion platform 301 is fixed to the bottom of the reservoir basin, the top of the platform is not higher than the lowest water level of the reservoir, and a flow gap is left between at least part of the side wall of the platform and the inner wall of the reservoir; the hydroelectric power generation mechanism is arranged on the reservoir basin diversion platform 301, which has a turbine room located at the lower part of the reservoir basin diversion platform and a turbine 303 located in the turbine room; the water inlet of the diversion acceleration tube is located on the side wall of the reservoir basin diversion platform, and is connected to the reservoir basin through the flow gap, and the water outlet of the diversion acceleration tube is connected to the turbine room.

[0046] In this example, the water inlet of the drainage acceleration tube 311 is located on the side of the reservoir drainage platform, and the water outlet of the drainage acceleration tube is located at the water inlet of the turbine in the power plant. Figure 7~Figure 8 As shown, the drainage acceleration tube 311 is a variable diameter pipe, which is composed of a large diameter drainage section, a transition section and a small diameter drainage section from the water inlet to the water outlet. The transition section is used to transition from the large diameter drainage section to the small diameter drainage section, and the drainage and acceleration of the water flow are achieved by changing the diameter.

[0047] In this example, the reservoir drainage platform 301 can be used to suspend the photovoltaic power generation unit and the power plant 305 and its access road. In addition, the reservoir adjustment mechanism can also be rooted on the reservoir drainage platform.

[0048] When the power plant is located in the center of the upper reservoir basin, the drainage acceleration pipe will divert water from four sides to the inlet trash rack of the turbine; when the power plant is located on the side of the upper reservoir basin, the drainage acceleration pipe will divert water from three sides to the inlet trash rack of the turbine.

[0049] In this embodiment, the water inlet and the water discharge port of the upper reservoir are separately and independently arranged, and the water inlet and the water discharge port of the upper reservoir are at least half the distance of the reservoir basin. When the power plant is set in the center of the reservoir basin, the water inlet 308 of the upper reservoir is set near the side of the reservoir basin; when the power plant is set at the side of the reservoir basin, the water inlet 308 of the upper reservoir is set on the opposite side of the basin.

[0050] 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, water flows into 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. Water flows into the pressure steel pipe 307 from the outlet side trash rack 310, the diversion acceleration tube 311, the turbine 303 and the outlet valve 306. At this time, the water flow sent by the diversion acceleration tube 311 impacts the turbine 303, realizing the power generation process of the spillway diversion power generation unit.

[0051] In this embodiment, the main structure of the power plant 305 is set on the upper part of the reservoir drainage platform 301. The power plant has a built-in generator 304. The turbine 303 is placed in the lowest depression of the upper reservoir, buried deep below the liquid surface and lower than the lowest water level of the upper reservoir. The access road to the power plant is also rooted at the top of the reservoir drainage platform. During the operation stage, the power plant can be entered through the operation channel.

[0052] 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, uses wind power, water power, photovoltaics and gravity to achieve the coupling of new energy and energy storage, and creates an intensive energy storage technology of "wind, light, water and storage".

Claims

1. A comprehensive energy generation system based on a pumped storage environment, characterized in that: include: The photovoltaic power generation module floats on the water surface of the upper reservoir and / or lower reservoir of the pumped storage power station via a floating platform; A plurality of anchoring mechanisms are fixedly arranged around the photovoltaic power generation module, each anchoring mechanism has a fixed pulley block and a traction cable wound around the pulley block, a first end of the traction cable is connected to the frame around the photovoltaic power generation module, and a weight is suspended at the second end of the traction cable; The submersible generators are arranged one by one corresponding to the traction cables, and the traction cables can drive the corresponding submersible generators to generate electricity.

2. The integrated energy generation system based on pumped storage environment according to claim 1 is characterized in that: Also includes: A water level sensor, used to obtain water level information of the upper reservoir and / or lower reservoir of a pumped storage power station; A limit lock, which is arranged one-to-one with the traction cables and is located between the submersible generator and the floating platform; A lock control unit is connected to the water level sensor and the limit lock, and 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 a 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 a second preset water level; When at a 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 a 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.

3. The integrated energy generation system based on pumped storage environment according to claim 2 is characterized in that: The first preset water level includes the highest water level and / or the lowest water level in the corresponding reservoir water level variation range, the second preset water level includes the middle water level in the corresponding reservoir water level variation range, and the installation position of the pulley block corresponds to the middle water level.

4. The integrated energy generation system based on pumped storage environment according to claim 1 is characterized in that: The input end of the submersible generator is provided with a gear, and at least a portion of the traction cable is a chain structure that can cooperate with the gear on the submersible generator.

5. The integrated energy generation system based on pumped storage environment according to claim 1 is characterized in that: Anti-collision and shock-absorbing devices are arranged on the frames surrounding the photovoltaic power generation module.

6. The integrated energy generation system based on pumped storage environment according to claim 1 is characterized in that: A cooling heat pipe is arranged between the photovoltaic power generation modules. The heat pipe is fixed by a floating platform, and the bottom of the heat pipe is inserted into the liquid surface of the reservoir.

7. The integrated energy generation system based on pumped storage environment according to claim 1 is characterized in that: At least one wind turbine is arranged within the upper reservoir and / or the lower reservoir of the pumped storage power station.

8. The integrated energy generation system based on pumped storage environment according to claim 7 is characterized in that: The wind turbine tower of at least one wind turbine is arranged on the top of the anchoring mechanism.

9. The integrated energy generation system based on pumped storage environment according to claim 1 is characterized in that: A reservoir basin diversion hydroelectric power generation module is provided at the bottom of the reservoir basin of the upper reservoir, and the reservoir basin diversion hydroelectric power generation module is provided with a diversion accelerating tube to accelerate the water flow to impact the turbine.

10. The integrated energy generation system based on pumped storage environment according to claim 9, characterized in that: The reservoir basin diversion hydropower generation module comprises: The reservoir basin drainage platform is fixed to the bottom of the reservoir basin, the top of the platform is not higher than the lowest water level of the reservoir, and there is a flow gap between at least part of the side wall of the platform and the inner wall of the reservoir; A hydroelectric power generation mechanism is arranged on the reservoir drainage platform, and comprises an engine room located at the lower part of the reservoir drainage platform and a water turbine located in the engine room; At least one drainage acceleration pipe has a water inlet located on the side wall of the drainage platform of the reservoir basin, connected to the reservoir basin through the flow gap, and a water outlet connected to the turbine room.

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