Hydroelectric power generation and energy storage device based on water level variation

Abstract

A hydroelectric power generation and energy storage device based on water level variation, comprising: a floating unit, a submerged component, and a waterborne power generation component. The waterborne power generation component comprises a waterborne reservoir (1); the submerged component comprises a submerged pumping assembly, a submerged containment cylinder, and a submerged support frame structure (17), and the containment cylinder is provided with a first one-way valve (19050) and a second one-way valve (19060). When the tide rises and the water level increases, the floating unit ascends, so that the submerged pumping assembly is driven to move upwards, the pressure in the submerged containment cylinder is reduced, and then seawater or river water is pumped into the submerged containment cylinder by means of the first one-way valve (19050). When the tide falls or the water level decreases, the floating unit descends, so that the submerged pumping assembly is driven to move downwards, and then seawater or river water in the submerged containment cylinder is pumped into the waterborne reservoir (1). According to the device, a waste ship is used, kinetic energy of water flow is converted into potential energy of water by means of water level variation, and then the potential energy is converted into electric energy, thereby achieving the objective of power generation or energy storage.

Description

Hydroelectric energy storage device utilizing water level changes Technical Field

[0001] The present application relates to new energy technologies, and in particular to a hydroelectric energy storage device utilizing water level changes. Background Art

[0002] With the development of human society, climate change has become a global concern. Countries around the world are developing new energy technologies to reduce emissions and pollution. The kinetic energy of water flows, as well as the fluctuations in water levels caused by tides or by reservoirs diverting water for storage and releasing it for power generation, can be fully utilized to produce natural green electricity.

[0003] Another resource that could be widely used is abandoned or sunken ship hulls. A huge number of ships are scrapped around the world every day, but scrapping and dismantling these old hulls requires significant manpower and resources, and causes serious environmental pollution. If waste can be turned into treasure, directly utilizing old hulls, especially large or ultra-large hulls and their ballast water systems, and transforming them into hydroelectric energy storage devices, this would not only significantly reduce the environmental pollution caused by scrapped ships, but also effectively generate green electricity.

[0004] Summary of the Invention

[0005] The purpose of this application is to provide a hydroelectric power generation and energy storage device that utilizes water level changes, which can make full use of large floating objects such as scrap hulls, and greatly optimize the use of potential energy generated by water level changes and kinetic energy generated by water flow, and convert them into electrical energy to achieve the purpose of power generation or energy storage.

[0006] The present application provides a hydroelectric energy storage device utilizing water level changes, comprising: a floating unit, an underwater component, and an above-water power generation component, wherein the above-water power generation component is configured above the floating unit, and the underwater component is configured to be located below the floating unit;

[0007] The above-water power generation component includes an above-water reservoir, and the underwater component includes an underwater pump assembly, an underwater accommodating cylinder, and an underwater supporting frame structure. The accommodating cylinder is provided with a first one-way valve and a second one-way valve. One end of the underwater supporting frame structure is fixedly connected to the underwater accommodating cylinder, and the other end is fixed to the bottom of the water. The first one-way valve is configured to only allow fluid to flow into the underwater accommodating cylinder from the outside, and the second one-way valve is configured to only allow fluid to be discharged from the underwater accommodating cylinder to the outside.

[0008] The underwater pump assembly is fixedly connected to the float unit. The underwater pump assembly is partially disposed in the underwater holding cylinder and can slide up and down in the underwater holding cylinder. When the tide rises and the water level rises, the float unit rises, thereby driving the underwater pump assembly to move upward, so that seawater or river water is pumped into the underwater holding cylinder through the first one-way valve. At this time, the first one-way valve is in the open position and the second one-way valve is in the closed position. When the tide recedes or the water level drops, the float unit drops, thereby driving the underwater pump assembly to move downward, thereby causing the seawater or river water in the underwater holding cylinder to be pumped out to the surface water reservoir through the second one-way valve and the connecting pipe. At this time, the first one-way valve is in the closed position and the second one-way valve is in the open position. In another preferred embodiment, the number of the underwater pump assembly and the underwater holding cylinder is multiple.

[0009] In another preferred embodiment, the floating unit is a waste ship parked in a flowing water stream with significant water level changes, preferably a large or ultra-large ship including a ballast water system.

[0010] In another preferred embodiment, the scrapped ship is parked in an ocean, a lake or a river.

[0011] In another preferred example, the above-water power generation component further includes a downcomer and a turbine, and the seawater or river water in the above-water reservoir is supplied to the first turbine through the downcomer, so that the turbine rotates to generate electricity.

[0012] In another preferred example, the underwater pump assembly includes an underwater connecting rod and an underwater piston, the underwater connecting rod is fixedly connected to the floating unit, the underwater piston is connected to the underwater connecting rod and moves synchronously, and the underwater piston can slide up and down in the underwater accommodating cylinder.

[0013] In another preferred embodiment, the hydroelectric energy storage device further comprises a water surface component, the water surface component is located on the floating unit, and the water surface component comprises a water surface reservoir; wherein,

[0014] The above-water power generation component also includes a transmission assembly, which includes an upper transmission shaft, a lower transmission shaft, an upper rotating mechanism located on the upper transmission shaft, a lower rotating mechanism located on the lower transmission shaft, and a chain connecting the upper rotating mechanism and the lower rotating mechanism. The movement of the chain can drive the upper rotating mechanism and the lower rotating mechanism to rotate. The upper transmission shaft moves synchronously with the upper rotating mechanism, and the lower transmission shaft moves synchronously with the lower rotating mechanism. The upper transmission shaft is arranged in the above-water reservoir, and the lower transmission shaft is located in / or above the water surface reservoir.

[0015] In another preferred embodiment, the upper rotating mechanism and the lower rotating mechanism are both one-way rotating mechanisms.

[0016] In another preferred example, it also includes a water carrying and drainage component, which includes a pair of counterweights and bucket assemblies. The counterweights and bucket assemblies are respectively arranged on opposite sides of the chain, and the weight of the counterweights and the weight of the bucket assembly are set so that they can only move in opposite directions. The bucket assembly cooperates with the counterweights to carry water in the above-water reservoir to the surface reservoir, and at the same time drives the upper transmission shaft and the lower transmission shaft to rotate, thereby achieving power generation.

[0017] In another preferred example, the water bucket assembly includes a balancing block and a water bucket, wherein the balancing block is connected to the water bucket to ensure that the water bucket maintains a balanced state without tilting, and the balancing block is connected to a chain and moves synchronously with the chain.

[0018] In another preferred example, the water carrying and drainage assembly further includes a water bucket liquid level sensor, which is disposed on the water bucket and configured to sense the liquid level of the water bucket.

[0019] In another preferred example, the water bucket in the water bucket assembly moves downward together with the chain after being filled with water in the surface water reservoir. At this time, the counterweight moves upward, thereby driving the upper rotating mechanism, the lower transmission mechanism, the upper transmission shaft and the lower transmission shaft to rotate. When the water bucket assembly descends to the lowest position or a lower position, all the water in the water bucket is discharged into the surface water reservoir. Then, under the action of gravity, the water bucket assembly moves upward and the counterweight moves downward. When the water bucket assembly rises to the highest position or a higher position, the water bucket is filled with water in the surface water reservoir again. Then, the water bucket assembly moves downward and the counterweight moves upward. This cycle repeats. The up and down movement of the water bucket assembly and the counterweight drives the rotation of the upper transmission shaft and the lower transmission shaft, thereby achieving power generation.

[0020] In another preferred example, the water carrying and drainage assembly further includes a position sensor, which is configured to be disposed on the counterweight and water bucket assembly for sensing the position thereof.

[0021] In another preferred example, the hydropower generation component also includes an upper speed gearbox and a lower speed gearbox; the upper speed gearbox is connected to the upper transmission shaft, and the lower speed gearbox is connected to the lower transmission shaft; when the bucket assembly or the counterweight is in the lowest position or lower position or the highest position or higher position, the upper speed gearbox is configured to control the upper transmission shaft to stop rotating, and the lower speed gearbox is configured to control the lower transmission shaft to stop rotating, thereby causing the counterweight and the bucket assembly to stop moving at this time.

[0022] In another preferred example, the above-water power generation component further includes a first generator and a second generator, the first generator is connected to the upper speed change gear box, and the second generator is connected to the lower speed change gear box.

[0023] In another preferred embodiment, it further includes a first spring, which is arranged at the top of the counterweight to prevent the counterweight from violently colliding with the bottom of the water tank.

[0024] In another preferred embodiment, a second spring is further included, which is arranged at the top of the water bucket assembly to prevent the water bucket assembly from violently colliding with the bottom of the water reservoir.

[0025] In another preferred example, the water-carrying and drainage assembly includes multiple pairs of counterweights and bucket assemblies, and multiple bucket assemblies in the multiple pairs of counterweights and bucket assemblies are configured to simultaneously receive water in the upper water reservoir and descend, or multiple bucket assemblies in the multiple pairs of counterweights and bucket assemblies are configured to sequentially receive water in the upper water reservoir and descend sequentially.

[0026] In another preferred example, the water carrying and drainage assembly further includes a first electric valve, which is disposed at the bottom of the above-water reservoir. When the first electric valve is opened, water in the above-water reservoir enters the water bucket through a first flexible water pipe.

[0027] In another preferred example, the water carrying and drainage assembly further includes a second electric valve, which is disposed at the bottom of the water bucket. When the second electric valve is opened, the water in the water bucket is discharged into the water surface reservoir through a second flexible water pipe.

[0028] In another preferred embodiment, it further includes a first liquid level sensor, which is arranged to detect changes in the water level in the above-water reservoir.

[0029] In another preferred example, the water surface component also includes a second liquid level sensor, a third electric valve, and a water surface generator. The third electric valve is arranged at the tail of the water surface reservoir. When the water level of the water surface reservoir remains basically unchanged, the third electric valve is configured to be in an open state, so that the water in the water surface reservoir gushes out and drives the turbine blades or rotors of the water surface generator to rotate, thereby generating electricity.

[0030] In another preferred embodiment, the float unit is provided with an electrical automatic control device, which is configured to receive signals from various electric valves, liquid level sensors, and position sensors, and control the opening and / or closing of various electric valves.

[0031] In another preferred example, it also includes an underwater turbine blade generator bracket and an underwater turbine blade generator set arranged on the underwater turbine blade generator bracket, the underwater turbine blade generator bracket is fixed on the underwater supporting frame structure, and the turbine blades of the underwater turbine blade generator set face the water inlet of the first one-way valve.

[0032] In another preferred example, the device further includes an above-water bracket and a top platform of the above-water bracket, wherein the above-water bracket is located between the float unit and the top platform of the above-water bracket and is used to support the top platform of the above-water bracket, and the above-water water reservoir is located on the top platform of the above-water bracket.

[0033] In another preferred embodiment, it further includes a photovoltaic wind turbine generator, which is arranged on the top platform of the above-water support.

[0034] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features described in detail below (such as in the embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be listed here one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. It should be understood that the drawings described below are merely some implementation examples of the present invention, and those skilled in the art can also derive other implementation examples based on these drawings without inventive effort.

[0036] FIG1 is a schematic diagram of the overall structure of an embodiment of the present application for generating electricity and storing energy above, on, and under water by utilizing water potential energy, gravity, kinetic energy of water, buoyancy of water, and the gravity of the device itself;

[0037] FIG2 is a schematic diagram of a partial structure of an above-water component according to an embodiment of the present application;

[0038] FIG3 is a partial structural diagram of the upper half of the above-water component water gravity generator set according to an embodiment of the present application;

[0039] FIG4 is a schematic diagram of the partial structure of the lower half of the above-water component water gravity generator set according to one embodiment of the present application;

[0040] FIG5 is a partial enlarged structural diagram of the lower half of the above-water component water gravity generator set according to one embodiment of the present application;

[0041] FIG6 is a schematic diagram of a partial structure of a waterway connecting the above-water reservoir, the bucket, and the surface water reservoir, which is composed of a flexible water pipe, an electric valve at the bottom of the above-water reservoir, and an electric valve at the bottom of the bucket, in the above-water component and the surface water component of one embodiment of the present application;

[0042] FIG7 is a schematic diagram of the structure of an above-water component according to an embodiment of the present application;

[0043] FIG8 is a schematic diagram of a partial structure of a water surface component according to an embodiment of the present application;

[0044] FIG9 is a partial top view of a water surface component according to an embodiment of the present application;

[0045] FIG10 is a schematic diagram of a partial internal structure of a water surface reservoir of a water surface component according to an embodiment of the present application;

[0046] FIG11 is a schematic diagram of the internal partial (front) structure of the water surface reservoir of the water surface component according to one embodiment of the present application;

[0047] FIG12 is a schematic diagram of the partial structure of a surface generator and a surface water tank electric valve of a water surface component according to an embodiment of the present application;

[0048] FIG13 is a partially enlarged structural diagram of a water surface generator of a water surface component according to an embodiment of the present application;

[0049] FIG14 is a schematic diagram of a partial structure of an electric valve for a surface water reservoir according to an embodiment of the present application;

[0050] FIG15 is a schematic diagram of the structure of underwater components according to an embodiment of the present application;

[0051] FIG16 is a schematic diagram of a partial structure of an underwater water extraction, pumping and valve pipeline assembly according to an embodiment of the present application;

[0052] FIG17 is a schematic diagram of the partial structure of the piston and the upper half of the middle column / connecting rod of the underwater water pumping, water pumping and valve pipeline assembly according to one embodiment of the present application;

[0053] FIG18 is a partial structural diagram of an underwater pumping, water pumping and valve pipeline assembly, a flow guide cover, and a submersible pump according to an embodiment of the present application;

[0054] FIG19 is a schematic diagram of the structure of a shroud according to an embodiment of the present application;

[0055] FIG20 is a schematic diagram of a turbine blade in a multi-stage flow guide duct according to an embodiment of the present application;

[0056] FIG21 is a schematic diagram of the connection between the multi-stage guide tube and the turbine blades and the device according to an embodiment of the present application.

[0057] In the drawings, the following are marked: 100000, water components; 1, water reservoir; 2, first liquid level sensor; 3, water gravity generator set; 3011, upper water gravity generator; 3012, lower water gravity generator; 3021, upper speed gear box; 3022, lower speed gear box; 3031, upper transmission shaft; 3032, lower transmission shaft; 3040, shaft seat; 3050, sprocket; 3060, chain; 3070, bucket; 3080, balance block; 3081, bucket liquid level sensor; 3090, counterweight; 3091, Electric valve at the bottom of the water tank; 3092, flexible water pipe; 3093, electric valve at the bottom of the bucket; 3094, spring; 3095, shaft seal; 3096, position sensor; 4, photovoltaic wind turbine; 4001, photovoltaic generator; 4002, wind turbine; 5, water support; 5010, top platform of the water support; 5020, gravity generator platform under the water support; 200000, water surface components; 6, water surface reservoir; 6010, second liquid level sensor; 7, electric valve at the water surface reservoir; 7001, water Surface reservoir outlet; 8. Surface generator; 8002. Surface generator drive shaft; 8003. Surface generator turbine blades / rotors; 9. Floating raft; 9001. Floating raft drain hole; 10. Battery pack; 11. Cable; 12. Electrical automatic control cabinet; 13. Electric valve at the bottom of the surface reservoir; 14. Drain pump; 1401. Drain pump drain pipe; 15. Ballast water pump; 16. Ballast tank; 300000. Underwater components; 17. Underwater support frame structure; 17010. Peripheral columns / guide columns; 17020. Intermediate columns Column; 17021. Upper part of the middle column / connecting rod; 17022. Lower part of the middle column / pumping and water pump base; 17023. Connecting piece between the middle column and the bottom of the raft; 17030. Guide sleeve; 17040. Positioning beam; 18. Underwater turbine blade generator set; 18010. Turbine blade or rotor; 18020. Generator; 18030. Underwater turbine blade generator bracket; 19. Underwater pumping, water pumping and valve pipeline group; 19010. Pumping and water pump cylinder; 19020. Piston; 19050. First valve of the valve pipeline group; 19060. Second valve of the valve pipeline group; 19070. Water pipe of the valve pipeline group; 20. Diversion cover; 21. Submersible pump; 2101. Submersible pump-water reservoir water pipe. DETAILED DESCRIPTION

[0058] Through extensive and in-depth research, the inventors have developed for the first time a hydroelectric power generation and energy storage device that utilizes water level changes. This device utilizes the potential energy generated by old ships or vessels and water level changes such as the ebb and flow of tides, as well as the kinetic energy generated by the water flow, and converts them into electrical energy to achieve the purpose of power generation or energy storage.

[0059] the term

[0060] As used herein, a "one-way rotation mechanism" refers to an object that can only move in one direction during rotation, which can be implemented by a one-way mechanism or a one-way rotation mechanism known / commonly used in the prior art;

[0061] As used herein, "body of water" and "water" refer to "sea water or river water".

[0062] It should be noted that in this patent application, relational terms such as first and second, etc., are used solely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, the terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. Without further limitation, an element specified by the phrase "comprising a" does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element. In this patent application, reference to performing an action in accordance with an element means performing the action in accordance with at least that element, including two situations: performing the action in accordance with that element alone, and performing the action in accordance with that element and other elements. Expressions such as "plurality," "multiple times," and "many" include "two," "twice," "two kinds," and "more than two," "more than two times," and "more than two kinds."

[0063] In the present invention, all directional indications (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0064] In the following description, many technical details are provided to help readers better understand this application. However, those skilled in the art will understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in this application can be implemented.

[0065] Example 1

[0066] In this embodiment, the present application provides a hydroelectric energy storage device utilizing water level changes, comprising: a floating unit, an underwater component, and an above-water power generation component, wherein the above-water power generation component is configured to be above the floating unit, and the underwater component is configured to be located below the floating unit;

[0067] The above-water power generation component includes an above-water reservoir, and the underwater component includes an underwater pump assembly, an underwater accommodating cylinder, and an underwater supporting frame structure. The accommodating cylinder is provided with a first one-way valve and a second one-way valve. The first one-way valve is configured to only allow fluid to flow from the outside into the underwater accommodating cylinder, and the second one-way valve is configured to only allow fluid to be discharged from the underwater accommodating cylinder to the outside. One end of the underwater supporting frame structure is fixedly connected to the underwater accommodating cylinder, and the other end is fixed to the bottom of the water. Preferably, there are multiple underwater pump assemblies and underwater accommodating cylinders.

[0068] The underwater pump assembly is fixedly connected to the floating unit. The underwater pump assembly is partially arranged in the underwater accommodating cylinder and can slide up and down in the underwater accommodating cylinder. When the tide rises and the water level rises, the floating unit rises, thereby driving the underwater pump assembly to move upward, so that the pressure in the underwater accommodating cylinder is reduced, and then the seawater or river water is pumped into the underwater accommodating cylinder through the first one-way valve. At this time, the first one-way valve is in the open position and the second one-way valve is in the closed position; when the tide recedes or the water level drops, the floating unit drops, thereby driving the underwater pump assembly to move downward, and then the seawater or river water in the underwater accommodating cylinder is pumped out to the surface water tank through the second one-way valve and the connecting pipe. At this time, the first one-way valve is in the closed position and the second one-way valve is in the open position.

[0069] Preferably, the floating unit is a derelict vessel parked in a flowing stream with significant water level fluctuations, preferably a large or extra-large vessel including a ballast water system. Preferably, the underwater containment cylinder is a cylindrical structure, the height of which is greater than the water level difference at the location of the derelict vessel. Preferably, the floating unit also includes an auxiliary fixing assembly, which can be used to prevent the auxiliary unit from excessive left and right swinging or oscillation. The auxiliary fixing assembly is provided in multiple numbers and includes a fixed column, a limiting structure, and a guide sleeve. The guide sleeve is disposed on the fixed column. The limiting structure is fixed to the bottom of the floating unit. The fixed column and one end of the guide sleeve pass through the limiting structure. One end of the fixed column is disposed on the bottom of the water. When the floating unit is affected by rising or falling tides, the limiting structure and the guide sleeve can move vertically along and on the fixed column as the floating unit moves. This can reduce some of the swaying movement of the floating unit, thereby ensuring the safety of the underwater pump assembly.

[0070] In this embodiment, the underwater pump assembly includes an underwater connecting rod and a underwater piston. The underwater connecting rod is fixedly connected to the floating unit. The underwater piston is connected to the underwater connecting rod and moves synchronously with the underwater connecting rod. The underwater piston can slide up and down within the underwater containment cylinder. The hydroelectric energy storage device also includes a surface component, which is located on the floating unit and includes a surface water reservoir.

[0071] In this embodiment, the above-water power generation component further includes a downcomer and a turbine. The seawater or river water in the above-water reservoir is supplied to the first turbine through the downcomer, so that the turbine rotates to generate electricity.

[0072] Optionally, the water power generation component includes a transmission assembly and a first generator and a second generator. The transmission assembly includes an upper transmission shaft, a lower transmission shaft, an upper rotating mechanism located on the upper transmission shaft, a lower rotating mechanism located on the lower transmission shaft, and a chain connecting the upper rotating mechanism and the lower rotating mechanism. The movement of the chain can drive the upper rotating mechanism and the lower rotating mechanism to rotate. The upper rotating mechanism and the lower rotating mechanism are both unidirectional rotating mechanisms. The upper transmission shaft moves synchronously with the upper rotating mechanism, and the lower transmission shaft moves synchronously with the lower rotating mechanism. The upper transmission shaft is arranged in the water reservoir, and the lower transmission shaft is located on the water surface reservoir. At the same time, the upper transmission shaft is connected to the first generator, and the lower transmission shaft is connected to the second generator, so that the upper and lower rotating shafts rotate unidirectionally, thereby realizing power generation.

[0073] Optionally, the device further includes a water carrying and drainage assembly, comprising a paired counterweight, a water bucket assembly, a water bucket liquid level sensor, and position sensors disposed on the counterweight and water bucket assembly. The water bucket liquid level sensor is disposed on the water bucket and is configured to sense the liquid level in the water bucket, and the position sensor is configured to sense the position of the counterweight and water bucket in real time (lowest position, intermediate position, or highest position). The counterweight and water bucket assembly are disposed on opposite sides of the chain, and the weight of the counterweight and the weight of the water bucket assembly are configured so that they can only move in opposite directions. The water bucket assembly and the counterweight cooperate to carry water from the surface water reservoir to the surface water reservoir, simultaneously driving the upper and lower drive shafts to rotate, thereby generating electricity. The water bucket assembly includes a balancing block and the water bucket. The balancing block is connected to the water bucket to ensure that the water bucket remains balanced and does not tilt. The balancing block is connected to the chain and moves synchronously with the chain. Specifically, after the water bucket in the water bucket assembly is filled with water from the surface water reservoir, it moves downward together with the chain. At this time, the counterweight moves upward, thereby driving the upper rotating mechanism, the lower transmission mechanism, the upper transmission shaft and the lower transmission shaft to rotate. When the water bucket assembly descends to the lowest position or a lower position, all the water in the water bucket is discharged into the surface water reservoir. Then, under the action of gravity, the water bucket assembly moves upward and the counterweight moves downward. At this time, the upper rotating mechanism, the lower transmission mechanism, the upper transmission shaft and the lower transmission shaft do not rotate and are in a stopped state. When the water bucket assembly rises to the highest position or a higher position, the water bucket is filled with water from the surface water reservoir again. Then, the water bucket assembly moves downward and the counterweight moves upward. This cycle repeats. The up and down movement of the water bucket assembly and the counterweight drives the unidirectional or positive rotation of the upper transmission shaft and the lower transmission shaft, thereby achieving power generation.

[0074] The hydroelectric power generation component also includes an upper stopper and a lower stopper; the upper stopper is connected to the upper transmission shaft, and the lower stopper is connected to the lower transmission shaft. When the water bucket assembly is at its lowest or lower position (when the counterweight is at its highest or higher position) or when the water bucket assembly is at its highest or higher position (when the counterweight is at its lowest or lower position), the upper stopper is configured to control the upper transmission shaft to stop rotating, and the lower stopper is configured to control the lower transmission shaft to stop rotating, thereby stopping the counterweight and the water bucket assembly. The device also includes an electrical automatic control cabinet that receives position information of the water bucket assembly and the balance weight via a position sensor and controls the movement of the upper and lower stops based on this position information.

[0075] The water carrying and drainage assembly includes multiple pairs of counterweights and bucket assemblies, and multiple bucket assemblies in the multiple pairs of counterweights and bucket assemblies are configured to simultaneously receive water in the upper water reservoir and descend, or multiple bucket assemblies in the multiple pairs of counterweights and bucket assemblies are configured to sequentially receive water in the upper water reservoir and descend sequentially.

[0076] In order to make the purpose, technical solution and advantages of the present invention clearer, another preferred embodiment of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that these are only some examples that the present invention may take, but are not intended to limit the scope of the present invention.

[0077] Example 2

[0078] 1 , this embodiment provides a hydroelectric energy storage device utilizing water level changes, including an above-water component 100,000, a surface component 200,000, and an underwater component 300,000 connected in sequence.

[0079] Water parts 100,000

[0080] Referring to Figures 1 to 7, preferably, the above-water component 100000 includes: an above-water reservoir 1, a first liquid level sensor 2, a water gravity generator set 3, a photovoltaic wind turbine 4, and an above-water bracket 5, wherein the above-water reservoir 1 is connected to the top platform 5010 of the above-water bracket, and the first liquid level sensor 2 is distributed at multiple positions along the vertical direction of the shaft seal to monitor the changes in the water level in real time and report the situation when the water level reaches multiple positions such as the highest, lowest, and middle. The first liquid level sensor 2 is connected to the electrical automatic control cabinet 12 and is located in the above-water reservoir 1, and the upper and lower halves of the water gravity generator set 3 are respectively fixed to the top and bottom of the above-water bracket 5, the photovoltaic power generation part of the photovoltaic wind turbine 4 is connected to the top platform 5010 of the above-water bracket, and the wind power generation part is fixed to the above-water bracket 5, and the position of the photovoltaic wind turbine 4 is defined as the front direction / position of the hydroelectric power generation energy storage device of this application.

[0081] Surface parts 200,000

[0082] 8 to 14 , preferably, the water surface component 200000 includes: a water surface reservoir 6, a second liquid level sensor 6010, an electric valve 7 (i.e., a third electric valve) for the water surface reservoir, a water surface generator 8, a raft 9, a battery pack 10, a cable 11, an electrical automatic control cabinet 12, an electric valve 13 at the bottom of the water surface reservoir, and a drainage pump 14, wherein the water surface reservoir 6 is connected to the bottom of the water support 5 and the top of the raft, the second liquid level sensor 6010 is distributed at multiple positions along the drainage pipe of the drainage pump, monitors the change of the water level in real time and reports the situation when the water level reaches multiple positions such as the highest, lowest, and middle, and the second liquid level sensor 6010 is connected to the electrical automatic control cabinet 12 and is located at the water surface reservoir. 6, the surface water tank electric valve 7 is located at the tail of the surface water tank. The position of the surface water tank electric valve 7 is defined as the tail direction / position of the hydroelectric energy storage device of this application. When the surface water tank 6 stores water, the surface water tank electric valve 7 is closed. The power supply of the surface water tank electric valve 7 is provided by a battery pack or an external power grid connected to a cable. The surface generator 8 is located at the tail of the raft. The turbine blades or rotors at the front end of the surface generator 8 are located at the drain outlet of the surface water tank electric valve 7. The turbine blades or rotors are driven by hydraulics, and their electrical control part interacts with the electrical automatic control cabinet 12 to adjust the angle and pitch of the turbine blades or rotors. The generator at the end of the surface generator 8 is placed on the upper surface of the tail of the raft. The surface generator 8 is connected to the battery pack 10, the electrical automatic control cabinet 12, and the cable 11 to charge the battery pack 10 or the external power grid or generate electricity. When the electric valve 7 of the surface water reservoir is opened, water gushes out, driving the turbine blades or rotors of the surface generator 8 to rotate. The turbine blades or rotors can adjust the pitch angle steplessly according to different water flow speeds, converting the kinetic energy of the water into electrical energy. The top of the raft is connected to the bottom of the surface water reservoir 6, and the bottom is connected to the positioning beam and the middle column of the underwater support frame structure.

[0083] The interior of the raft is a ballast tank, and the battery pack 10 is located above the tail of the surface water reservoir 6 and is connected to the electrical automatic control cabinet 12, all generators, all motors, all electric valve switches, all sensors and cables; the battery pack 10 can interact with the external power grid for charging and discharging, and can also interact with all electrical equipment / devices inside the hydroelectric energy storage device of this application for charging and discharging. The cable 11 includes a power cable and a communication cable, which enters the hydroelectric energy storage device from the tail of the surface water reservoir 6, one end of which is connected to the electrical automatic control cabinet 12, the battery pack 10, all generators, all motors, all electric valve switches, all sensors, and the other end is connected to the external power grid and the communication network; the electrical automatic control cabinet 12 is located above the tail of the surface water reservoir 6 and is connected to all electrical equipment / devices inside and outside the hydroelectric energy storage device of this application, including the battery pack, all generators, all motors, all electric valve switches, all sensors and cables. The time cycle of corresponding power generation, power storage, energy storage and power output and input is set according to the time period of the ebb and flow or the rise and fall of water. During the period, in conjunction with the water storage tank 1, the surface water storage tank 6, and the water bucket 3070 of the device, the device controls the power generation of each generator, the charging of the battery, the opening and closing of the electric valve, and the completion of the pumping, water pumping, water filling, and drainage operations. It can also complete the angle and pitch of the turbine blades or rotors of the surface generator 8 and the underwater turbine blade generator set 18, the DC-AC conversion function, and the conversion of various working conditions such as shutdown-generation, generation-shutdown, generation-phase adjustment, phase adjustment-generation, shutdown-phase adjustment, phase adjustment-shutdown of each generator, and control the external power supply. Force input and output and related information interaction and communication, the electric valve 13 at the bottom of the surface water tank is located at the bottom of the surface water tank, connecting the surface water tank and the raft, used to pour water into the raft ballast tank, the power supply of the electric valve 13 at the bottom of the surface water tank is provided by a battery pack or an external power grid connected to the cable 11, and the drainage pump 14 is located at the bottom of the surface water tank, used to drain the water in the surface water tank when the electric valve 7 of the surface water tank and the electric valve 13 at the bottom of the surface water tank are both closed, so as to achieve the purpose of adjusting the draft of the hydroelectric energy storage device.

[0084] Underwater parts 300,000

[0085] 15 to 19 , preferably, the underwater component 300000 includes: an underwater support frame structure 17, an underwater turbine blade generator bracket, an underwater turbine blade generator set 18, an underwater water pumping, water pumping and valve pipeline group 19, a deflector 20, and a submersible pump 21. The middle column at the upper end of the underwater support frame structure 17 is connected to the bottom of the raft by a connector 17023, and the lower end is fixed to the bottom of the water through a column.

[0086] Preferably, it can also include surrounding columns 17010, a positioning beam 17040, and a guide sleeve 17030. The positioning beam 17040 is fixedly connected to the bottom of the raft (preferably the bottom of a scrapped ship), and the guide sleeve 17030 is set on the surrounding columns 17040. The surrounding columns 17010 and one end of the guide sleeve 17030 pass through the positioning beam, and the other end of the surrounding columns 17010 is fixed to the bottom of the water. The positioning beam 17040 can move vertically along the surrounding columns 17010 and on it together with the guide sleeve 17030, and the surrounding columns 17010 are guide columns.

[0087] The upper part of the middle column of the underwater support frame structure 17 is connected to the piston 19020 in the underwater pumping and water pump cylinder 19010, and acts as a connecting rod. The lower part of the middle column of the underwater support frame structure 17 is connected to the underwater pumping and water pump cylinder 19010 and the bottom of the cylinder, and acts as the base of the underwater pumping and water pump. The bottom end of the lower part of the middle column of the underwater support frame structure 17 is fixed to the bottom of the water. The number of positioning beams 17040 of the underwater support frame structure 17, the number of surrounding columns 17010 and corresponding guide sleeves 17030 can be adjusted according to the wind and wave size and weather conditions in the waters where the hydroelectric energy storage device of this application is located, so as to ensure the safety and stability of the device.

[0088] The underwater turbine blade generator bracket 18030 is fixed on the middle column 17020 of the underwater supporting frame structure 17. The underwater turbine blade generator set 18 is fixed on the underwater turbine blade generator bracket 18030 of the underwater supporting frame structure 17 and is placed in front of the water inlet of the underwater pumping and water pump cylinder 19010. The turbine blades or rotors of the underwater turbine blade generator set 18 are driven by hydraulics, and its electrical control part interacts with the electrical automatic control cabinet 12 to adjust the angle and pitch of the turbine blades or rotors according to the direction of water flow and different water flow speeds to achieve full positive operation and convert the kinetic energy of water into electrical energy through the generator.

[0089] The underwater pumping and water pumping pump and its valve pipeline group 19 are located between the middle columns of the underwater support frame structure. The first valve 19050 (first one-way valve) of the valve pipeline group is located at the water inlet of the underwater pumping and water pumping pump. The second valve (second one-way valve) 19060 is connected to the water pipe fixed on the top platform of the above-water bracket 5. The outlet of the valve pipeline group is placed above the above-water reservoir so that the water below the water surface can be introduced into the above-water reservoir through the underwater pumping and water pumping pump. When the tide is high or the water level rises, the first valve 19050 of the valve pipeline group is fully opened, and the second valve 19060 of the valve pipeline group is fully closed. The buoyancy lifts the above-water components and the surface components, and the upper part of the middle column drives the piston of the underwater pumping and water pumping pump to rise to complete the pumping. The pumping action accelerates the speed and kinetic energy of the forward water flow, thereby accelerating the rotation of the turbine blades or rotors of the underwater turbine blade generator set 18, providing more kinetic energy of the water and converting it into electrical energy through the generator of the underwater turbine blade generator set 18; when the tide is low or the water level drops, during the process of water level drop, the first valve 19050 of the valve pipeline group is fully closed, and the second valve 19060 of the valve pipeline group is fully opened at this time. Under the action of gravity, the above-water components and the surface components move downward, and the upper part of the middle column drives the piston of the underwater pumping and water pumping pump to move downward, forcing the water in the cylinder to pass through the valve pipeline. A water pipe fixed to the top platform of the water support on one side of the channel group continuously pumps water into the water reservoir through an outlet located above the water reservoir, storing energy in the form of water potential energy and gravity, which is then further converted into electrical energy through the device's generator; the deflector 20 is fixed to the underwater support frame structure 17 and is located in front of the water inlet of the first valve 19050 of the underwater pumping, water pumping and valve pipeline group. The deflector 20 changes the shape, direction and speed of the water flow at its location, making the water flow smoother, thereby maximizing the capture of water kinetic energy, reducing pressure loss during water flow, and improving the working efficiency of the underwater pumping, water pumping and valve pipeline group and the underwater turbine blade generator group 18. The submersible pump 21 is located at the bottom of the water and connected to a column of the underwater support frame structure 17. It is used to introduce water below the water surface into the water reservoir. This hydroelectric power generation and energy storage device utilizes gravity, buoyancy, hydraulic force, water kinetic energy, potential energy, electricity, and electrical energy to meet the needs of various scenarios. The piston stroke of the underwater pumping, water pumping and valve pipeline group is directly related to the water level difference of the water body where the hydroelectric energy storage device is located. The piston stroke should be larger than the local water level difference. The piston stroke can be appropriately adjusted by adjusting the draft of the hydroelectric energy storage device through the floating raft.

[0090] The hydro-gravity generator set 3 also includes an upper hydro-gravity generator 3011, a lower hydro-gravity generator 3012 (i.e., a first generator and a second generator), and an upper speed-changing gearbox 3021 and a lower speed-changing gearbox 3022. The upper and lower speed-changing gearboxes are connected to the hydro-gravity generators. The upper hydro-gravity generator and the upper speed-changing gearbox are fixed to the top platform of the upper support 5 of the upper support 5. Here / this direction is defined as the front of the hydroelectric energy storage device. The lower hydro-gravity generator 3012 and the lower speed-changing gearbox 3022 are fixed to the lower hydro-gravity generator platform of the upper support 5 of the upper support 5. The upper and lower speed-changing gearboxes are equipped with conventional drive shaft brakes, whose brake discs / brake calipers act on the drive shaft to slow down or stop the rotation of the drive shaft. Their brake activation system and brake controller are connected to and controlled by the electrical automatic control cabinet 12.

[0091] The water gravity generator set 3 also includes an upper transmission shaft 3031 and a lower transmission shaft 3032. The upper transmission shaft 3031 of the water gravity generator set 3 is located in the water reservoir 1, and the two ends of the upper transmission shaft 3031 are respectively connected to the upper speed gear box 3021 of the upper water gravity generator 3011 located outside the water reservoir 1 and the shaft seat 3040 located in the water reservoir 1; the lower transmission shaft 3032 of the water gravity generator set 3 is located above the water surface reservoir 6, and the two ends are respectively connected to the lower speed gear box 3022 of the lower water gravity generator 3012 and the shaft seat located at the bottom of the water bracket 5 and the tail of the hydroelectric energy storage device.

[0092] The upper and lower transmission shafts also include a pair of matching sprockets 3050, which are connected by a chain 3060 to form a sprocket chain transmission device. The upper transmission shaft is provided with a shaft seal at the shaft seat, each sprocket and the joint connection through the wall of the water reservoir to isolate the water in the water reservoir, thereby preventing the sprocket chain transmission device from rusting and preventing the water in the water reservoir 1 from overflowing and leaking.

[0093] 3 to 7 , the water gravity generator set 3 further includes a water bucket 3070 and a balancing block 3080, a water bucket liquid level sensor 3081, a counterweight 3090, an electric valve 3091 (i.e., a first electric valve) at the bottom of the water reservoir, a flexible water pipe 3092, an electric valve 3093 (i.e., a second electric valve) at the bottom of the water bucket, a spring 3094, and a position sensor 3096. The water bucket 3070 and the balancing block 3080 are located on one side of the chain 3060. The water bucket 3070 and the balancing block 3080 are fixed to each other, and the balancing block 3080 is fixed to the chain 3060 to balance the water bucket 3070 so that the water bucket 3070 always maintains a horizontal position. The shapes of the water bucket 3070 and the balancing block 3080 and the relative positions thereof can be changed according to actual conditions to ensure that the water bucket 3070 and the balancing block 3080 can always maintain a balanced state. Instead of tilting, a bucket liquid level sensor 3081 is provided at the relevant line where the balance block 3080 and the bucket 3070 intersect along the vertical height direction of the bucket 3070, and the water level height in the bucket 3070 is fed back to the electrical automatic control cabinet 12 in real time. The counterweight 3090 is fixed on the other side of the chain. The positions of the bucket 3070, the balance block 3080 and the counterweight 3090 are high on one side and low on the other side, like a "seesaw", that is, when the bucket 3070 and the balance block 3080 reach the set highest position, the counterweight 3090 reaches the set lowest position, and vice versa, when the counterweight 3090 reaches the set highest position, the bucket 3070 and the balance block 3080 reach the set lowest position, and the mass of the counterweight 3090 and the mass of the bucket 3070 (without water) plus the mass of the balance block 3080 are heavier, thereby realizing up and down reciprocating motion. An electric valve switch is provided at the bottom of the water reservoir 1 above each water bucket 3070 and is controlled by the electrical automatic control cabinet 12. The power supply for the electric valve 3091 at the bottom of the water reservoir 1 is provided by a battery pack or an external power grid connected to a cable. A flexible water pipe 3092 connects the valve at the bottom of the water reservoir with the corresponding water bucket 3070 below, and is used to fill the water stored in the water reservoir 1 into the water bucket 3070.An electric valve switch and a flexible water pipe 3092 are also provided at the bottom of the bucket 3070. The flexible water pipe 3092 connects the electric valve 3093 at the bottom of the bucket 3070 with the water surface reservoir 6 below, and is used to inject the water stored in the bucket 3070 into the water surface reservoir 6. The power supply of the electric valve 3093 at the bottom of the bucket is provided by a battery pack or an external power grid connected to a cable. The spring 3094 is a mechanical spring 3094, which is installed on the top of the water bucket 3070, the balance block 3080, and the counterweight 3090 to cushion the collision that occurs when the water bucket 3070, the balance block 3080, or the counterweight 3090 contacts the bottom of the water reservoir 1. The position sensor is set on the top of the water bucket 3070, the balance block 3080, and the counterweight 3090. The position sensor 3096 can be a contactless position sensor widely used in industrial automation and other fields to control the movement and stroke of the water bucket 3070 and the counterweight 3090. Once the water bucket 3070, the balance block 3080, or the counterweight 3090 reaches the top set position, the spring 3094 first plays a buffering role to avoid a violent collision with the bottom of the water reservoir 1, and then the electrical automatic control cabinet 12 changes upward or downward according to the feedback of the position sensor. The speed gearboxes (3021, 3022) send out instructions to jam the upper and lower transmission shafts (3031, 3032), pausing the water bucket 3070, the balance block 3080, and the counterweight 3090 from continuing to move. When the counterweight 3090 approaches and reaches the set highest or higher position, the spring 3094 at the top of the counterweight 3090 plays a buffering role to prevent the counterweight 3090 from violently colliding with the bottom of the water reservoir 1. At the same time, the position sensor reports to the electrical automatic control cabinet 12 that the counterweight 3090 has reached the set highest or higher position. Based on the feedback from the position sensor, the electrical automatic control cabinet 12 sends out instructions to the upper speed gearbox 3021 and the lower speed gearbox 3022 to brake the upper transmission shaft 3031 and the lower transmission shaft 3032, pausing the water bucket 3070, the balance block 3080, and the counterweight 3090 from continuing to move.Then the electrical automatic control cabinet 12 issues a command to open the electric valve 3093 at the bottom of the bucket and start emptying the bucket 3070. The water in the bucket 3070 is injected into the water surface reservoir through the flexible water pipe 3092. When the bucket 3070 is completely emptied, the bucket liquid level sensor 3081 set at the relevant line where the balance block 3080 and the bucket 3070 intersect to the electrical automatic control cabinet 12 feedbacks that the bucket 3070 has been emptied of water. At this time, the electrical automatic control cabinet 12 issues a command to release the temporary brakes of the upper transmission shaft 3031 and the lower transmission shaft 3032. Since the mass of the counterweight 3090 is greater than the sum of the masses of the emptied bucket 3070 and the balance block 3080, the counterweight 3090 begins to move downward from the highest point or the higher point, driving the sprocket and the water on the other side of the chain. The bucket 3070 and the balance block 3080 move upward. When the bucket 3070 and the balance block 3080 approach and reach the set highest or higher position, the spring 3094 located at the top of the bucket 3070 and the balance block 3080 plays a buffering role to prevent the bucket 3070 and the balance block 3080 from violently colliding with the bottom of the water reservoir 1. At the same time, the position sensor reports to the electrical automatic control cabinet 12 that the bucket 3070 and the balance block 3080 have reached the set highest or higher position. Based on the feedback from the position sensor, the electrical automatic control cabinet 12 sends instructions to the upper speed change gear box 3021 and the lower speed change gear box 3022 to brake the upper transmission shaft 3031 and the lower transmission shaft 3032, thereby stopping the bucket 3070, the balance block 3080, and the counterweight 3090 from continuing to move.Next, the electrical automatic control cabinet 12 issues another command to open the electric valve 3091 at the bottom of the water reservoir 1 above each water bucket 3070, and at the same time close the electric valve 3093 at the bottom of each water bucket. The water in the water reservoir 1 is injected into the water bucket 3070 through the flexible water pipe 3092 until each water bucket 3070 is filled with water. The water bucket level sensor 3081 set at the relevant line where the balance block 3080 and the water bucket 3070 intersects the water bucket 3070 to feedback to the electrical automatic control cabinet 12 that the water level in the water bucket 3070 is full. After being filled with water, the electrical automatic control cabinet 12 issues a command to close the electric valve 3091 at the bottom of the water reservoir 1 above each water bucket 3070, and stop filling water into each water bucket 3070. At this time, the electrical automatic control cabinet 12 issues a command to release the temporary brake of the upper transmission shaft 3031 and the lower transmission shaft 3032. Since the mass of the counterweight 3090 is less than the sum of the masses of the bucket 3070 filled with water and the balance block 3080, the bucket 3070, the balance block 3080 and the bucket 3070 carrying the full bucket of water are moved from the bottom to the bottom. The high point or higher point moves downward, driving the sprocket and the counterweight 3090 on the other side of the chain to move upward. When the counterweight 3090 approaches and reaches the set highest or higher position, the spring 3094 at the top of the counterweight 3090 plays a buffering role to prevent the counterweight 3090 from violently colliding with the bottom of the water reservoir 1. At the same time, the position sensor reports to the electrical automatic control cabinet 12 that the counterweight 3090 has reached the set highest or higher position. The electrical automatic control cabinet 12, based on the feedback from the position sensor, shifts the gearbox 3021 upward and shifts the gearbox 3022 downward. The high-speed gearbox 3022 issues a command to brake the upper and lower drive shafts 3031 and 3032, halting the movement of the water bucket 3070, the balance block 3080, and the counterweight 3090. This cycle repeats, causing the water bucket 3070, the balance block 3080, and the counterweight 3090 to move up and down, driving the upper and lower gravity generators 3011 and 3012 to generate electricity. Through the DC-AC conversion and phase modulation functions of the electrical automatic control cabinet 12, this allows for direct transmission of power to the external power grid or the supply of electrical energy required for charging the battery pack. When the water in the upper water reservoir 1 is completely drained, the electrical automatic control cabinet 12, based on the feedback signal from the first liquid level sensor 2 of the upper water reservoir 1, stops temporarily releasing the brakes on the upper and lower drive shafts 3032, temporarily suspending power generation by the upper and lower gravity generators.

[0094] Control of electrical automatic control cabinet

[0095] The hydroelectric energy storage device can switch between various power generation, power storage and energy storage modes; when the water level changes significantly, the above-water components and surface components rise or fall with the ebb and flow of the tide, thereby driving the hydroelectric energy storage device, especially the upper half of the middle column of the underwater support frame structure 17 and the piston of the underwater pumping and water pumping pump to move upward or downward, completing the underwater pumping and water pumping action and driving the water flow at the inlet and outlet of the underwater pumping and water pumping pump to accelerate the forward flow, assisting the turbine blades or rotors of the underwater turbine blade generator set 18 to accelerate the forward rotation, so as to achieve the purpose of utilizing buoyancy and gravity to enhance the kinetic energy of the water and convert it into potential energy, and then convert it into electrical energy. When the water level does not change significantly, the water component opens the electric valve above each bucket 3070 at the bottom of the water reservoir 1 according to the instruction of the electrical automatic control cabinet 12, and injects the water stored in the water reservoir 1 into the corresponding bucket 3070 below through the flexible water pipe 3092. After filling, the electric valve is closed. At this time, because the sum of the mass of the bucket 3070 and the balance block 3080 plus the mass of the water injected into the bucket 3070 is greater than the counterweight 3090 on the other side of the chain, the bucket 3070 and the balance block 3080 are pulled down by gravity. Move downward; when the water bucket 3070 and the balance block 3080 descend to the set position, the electrical automatic control cabinet 12 opens the electric valve 3093 at the bottom of the water bucket, and injects the water stored in the water bucket 3070 into the water surface reservoir through the flexible water pipe 3092. After the water in the water bucket 3070 is emptied, the electrical automatic control cabinet 12 closes the electric valve 3093 at the bottom of the water bucket. At this time, because the mass of the empty water bucket 3070 and the balance block 3080 is less than the counterweight 3090 on the other side of the chain, the counterweight 3090 moves downward due to gravity. In this way, the water bucket 3070 and the balance block 3080 and the counterweight 3090 make a "seesaw"-like up and down movement according to the switch instructions of the electric valve above each water bucket 3070 and the electric valve 3093 at the bottom of the water bucket issued by the electrical automatic control cabinet 12, driving the chain, the upper and lower sprockets and the upper and lower transmission shafts 3032 to rotate, realizing the purpose of converting mechanical energy into electrical energy by the upper and lower water gravity generators; when the water level does not change significantly, the water surface components open the water according to the instructions of the electrical automatic control cabinet 12. The electric valve at the drain outlet of the surface water tank 7 causes water to gush out, driving the turbine blades or rotors of the surface generator 8 to rotate. The turbine blades or rotors can steplessly adjust the pitch angle according to different water flow speeds, thereby converting the kinetic energy of the water into electrical energy. When the hydroelectric energy storage device generates electricity, it can directly supply power to the power grid through a cable according to the instructions of the electrical automatic control cabinet 12, or use a battery to store the electrical energy, or use a submersible pump 21 to introduce water below the water surface into the water reservoir 1 to store the electrical energy in the form of potential energy.The hydroelectric energy storage device can switch between multiple power storage and energy storage modes. When the grid power is too much, the device inputs grid power through the cable according to the instruction of the electrical automatic control cabinet 12, starts the battery storage mode until the battery is fully charged, and achieves the purpose of storing the excess power through the battery; after entering the energy storage mode, the submersible pump 21 can be started, and the electric valve switch above each water bucket 3070 at the bottom of the water reservoir 1 and the electric valve switch at the bottom of the water bucket 3070 are opened at the same time, and the flexible water pipe 309 is used to connect the water tank 1 to the electric power storage device. 2 connects the water reservoir 1 and the surface water reservoir, uses the submersible pump 21 to pump water in and fill the surface water reservoir first, then closes the electric valve switch located above each water bucket 3070 at the bottom of the water reservoir 1 and the electric valve switch at the bottom of the water bucket 3070, and then uses the submersible pump 21 to pump water in and fill the water reservoir 1, thereby converting excess electricity into potential energy and storing it; it is also possible to close all the first valves of the valve pipeline group and open all the second valves of the valve pipeline group during the water level drop process, and then close all the first valves of the valve pipeline group and open all the second valves of the valve pipeline group in the hydroelectric power generation energy storage device. Under the action of its own gravity, the above-water parts and the surface parts move downward, and the upper part of the middle column drives the underwater pumping and the piston of the water pump to move downward, forcing the water in the cylinder to pass through the water pipe fixed to the top platform of the above-water bracket 5 on one side of the valve pipe group, and continuously pump the water into the above-water reservoir 1 through the water outlet above the above-water reservoir 1. During the water filling process, you can choose to open the electric valve switch above each water bucket 3070 at the bottom of the above-water reservoir 1 and the electric valve switch at the bottom of the water bucket 3070 at the same time, and through the flexible water pipe 30 92 connects the water reservoir 1 and the surface water reservoir, pumps water in and fills the surface water reservoir first, then closes the electric valve switches at the bottom of the water reservoir 1 above each water bucket 3070 and the electric valve switches at the bottom of the water bucket 3070, and then pumps water in and fills the water reservoir 1; the above-mentioned water injection method can convert the gravity and potential energy of the hydroelectric energy storage device itself into water potential energy and store it in the water reservoir 1 and the surface water reservoir, and use the water gravity generator set 3 and the surface generator 8 to generate electricity when electricity is needed.

[0096] The electrical automatic control cabinet 12 includes an input module, a central processing unit (CPU), a memory, an output module, a human-machine interface, and a communication interface. The input module is located inside the electrical automatic control cabinet 12 above the tail of the surface water reservoir and is connected to cables, various sensors, various electric valves and switches, and various generators. It is used to obtain signals or data and convert input signals into electrical signals for processing by the controller; the central processing unit (CPU) is located inside the electrical automatic control cabinet 12 above the tail of the surface water reservoir and is used to receive input signals, process them according to preset control logic, and generate corresponding instructions to control the submersible pump 21, the drainage pump 14, the ballast water pump 15, the first liquid level sensor 2 of the water reservoir 1, the second liquid level sensor 6010, the third liquid level sensor, the position sensor 3096, various electric valves and switches, the operation of various generators, the memory, the electrical automatic control cabinet 12 above the tail of the surface water reservoir The automatic control cabinet 12 is used to store the program code and data required by the controller, including control logic, device parameters, status information, etc. The output module, located inside the automatic control cabinet 12 above the tail end of the surface water reservoir, is used to convert the signals processed by the controller into control actions to realize the operation of the submersible pump 21, the drainage pump, the ballast water pump, the first liquid level sensor 2 of the surface water reservoir 1, the second liquid level sensor 6010, the third liquid level sensor, the position sensor, each electric valve, and each generator. The human-machine interface, located inside the automatic control cabinet 12 above the tail end of the surface water reservoir or remotely, is used to realize interaction between the automatic control cabinet 12 and the operator. The communication interface, located inside the automatic control cabinet 12 above the tail end of the surface water reservoir, is used for data exchange and interlocking control with external controllers. The communication interface can adopt serial port, Ethernet, or CAN bus. The automatic control cabinet 12 uses electrical connections to output control instructions through cables and connectors, and is connected to each motor, each electric valve, each generator, and each sensor to realize electrical signal transmission and control.

[0097] The photovoltaic wind turbine 4 includes a photovoltaic array composed of solar cell modules, a photovoltaic controller, a wind wheel group, a wind turbine main shaft, a wind turbine, a battery group, and a DC load; the photovoltaic array converts solar energy into electrical energy when there is light, and the photovoltaic controller is a 220-volt solar charge and discharge controller, which regulates and controls the electrical energy generated by the solar cell modules, charges the battery to the maximum extent, and provides overcharge and over-discharge protection for the battery. The wind wheel group consists of multiple wind wheels, each with three blades, which capture the kinetic energy of the wind and convert it into rotational kinetic energy. The main shaft is the connecting component between the wind rotor and the generator. When the wind rotor rotates, the main shaft also rotates. The wind turbine converts the mechanical energy generated by the rotation of the wind rotor into electrical energy. The battery pack is the battery pack of this device. Its main task is to store energy. The photovoltaic wind turbine 4 is connected to all DC loads through the battery pack and is controlled by the electrical automatic control cabinet 12. The DC loads are the submersible pump 21, drainage pump 14, ballast water pump 15 of this device, the first liquid level sensor 2, the second liquid level sensor 6010, the third liquid level sensor, the position sensor 3096, various electric valves, and the electrical automatic control cabinet 12.

[0098] floating raft

[0099] In one embodiment, the floating raft is a scrapped ship and its ballast water system. Optionally, in other embodiments, a floating raft may also be included, and the floating raft also includes a ballast water pump 15, a ballast tank 16, and a third liquid level sensor. The ballast water pump 15 is located at the front end of the floating raft, and the third liquid level sensor is located in the ballast tank 16. The electrical automatic control cabinet 12 instructs the ballast water pump 15 to inject or drain water according to the feedback signal sent by the third liquid level sensor, and adjusts the water volume of the ballast tank 16. The ballast tank 16 is the internal space of the floating raft, which is used to carry water and can also be emptied. The floating raft can be connected to the original ballast water system of the scrapped ship. When the draft needs to be deepened, the submersible pump 21 of the electrical automatic control cabinet 12 and the front and side one-way valves of the underwater pumping and pumping pump and its valve pipeline group, as well as the water reservoir, are used. The electric valves located above each water bucket 3070 at the bottom of the raft, the electric valves 3093 at the bottom of the bucket, and the electric valves 13 at the bottom of the surface reservoir issue commands to fill the raft, surface reservoir 6, and surface reservoir 1 with water. This gradually fills the ballast water tanks, causing the hydroelectric energy storage device to gradually sink into the water. When the draft needs to be reduced, drainage is performed using the drainage pump and ballast water pump. Alternatively, the electric valves 3091 at the bottom of the surface reservoir, the electric valves 3093 at the bottom of the bucket, and the electric valves 7 at the surface reservoir cooperate with the gravity generators for the upper and lower water levels. The surface generator 8 generates electricity and simultaneously drains water, gradually buoying the hydroelectric energy storage device during drainage. This adjusts the draft of the hydroelectric energy storage device. Deepening the draft stabilizes the hydroelectric energy storage device, while reducing the draft raises the surface reservoir, preventing water backflow when the electric valves 7 at the surface reservoir are opened, thereby enabling the surface generator 8 to generate electricity normally. The draft of the hydroelectric energy storage device is adjusted by the floating raft and the piston stroke is also adjusted.

[0100] A preferred embodiment of the underwater component and the movement process of the above-water component of the present application

[0101] The present application is installed in the ocean, lake, river, or other water bodies with obvious water level changes and water flow, and is connected to the external power grid through the cable 11. When the switch is pressed, the circuit is connected and the system enters the working state. The user can directly set and adjust the working program of the electrical automatic control cabinet 12 to adapt to the local time period of ebb and flow or water level rise and fall, set the corresponding time period of power generation, power storage, energy storage and power output and input, and according to the water level height of the reservoir fed back by the first liquid level sensor 2 and the second liquid level sensor 6010, and the charging status fed back by the battery pack, such as voltage, current and charge, etc., in conjunction with the water reservoir 1 and the surface water storage of the present device The pool 6 and the water bucket 3070 are filled with water or drained, and the power generation of each generator, the charging and discharging of the battery pack, and the opening and closing of each electric valve are controlled to complete the pumping, water pumping and drainage actions. The electrical automatic control cabinet 12 can also complete a series of operations including water gravity power generation of the water gravity generator set 3, angle and pitch adjustment of the turbine blades or rotors 18010 of the surface generator 8 and the underwater turbine blade generator set 18, DC-AC conversion function and conversion of various working conditions of each generator such as shutdown-generation, power generation-shutdown, power generation-phase adjustment, phase adjustment-generation, shutdown-phase adjustment, phase adjustment-shutdown, etc., and control external power input and output and related information interaction and communication.

[0102] As shown in Figures 1 to 7 and 15 to 19, before the tide rises or the water level rises, the second valve 19060 of the underwater pumping, water pumping and valve pipeline group 19 is all in the closed state, at this time completely cutting off the water flow inside the valve pipeline group water pipe 19070. When the tide rises or the water level rises, the buoyancy of the rising water surface lifts up the above-water component 100000 and the above-water component 200000, driving all the upper parts of the middle columns / connecting rods 17021 and the piston 19020 of the underwater component 300000 to rise synchronously. At this time, the first valve 19050 of the underwater pumping, water pumping and valve pipeline group 19 opens synchronously with the rise of the piston 19020 in the pump cylinder 19010 (the first valve 19050 is the first valve 19050). The one-way valve is installed to allow fluid to enter the pumping and water pumping cylinder 19010 from the outside until it is fully opened, thereby completing the pumping action. The pumping action accelerates the speed and kinetic energy of the forward water flow from the front direction / position of the hydroelectric energy storage device to the tail direction / position of the hydroelectric energy storage device, thereby accelerating the rotation of the turbine blades or rotor 18010 of the underwater turbine blade generator set 18. More kinetic energy of the water is converted into more electrical energy through the underwater turbine blade generator set 18. The generated electrical energy can be incorporated into the external power grid or stored in the battery pack 10; when the tide recedes or the water level begins to drop, the second valve 19060 of the underwater pumping, water pumping and valve pipeline group 19 is fully opened (the second valve 1 9060 is a second one-way valve, which is installed to only allow fluid to flow from the water pump cylinder 19010 to the outside (at this time, the first one-way valve is in a closed state), so that the water flow inside the valve pipeline assembly water pipe 19070 is unobstructed. Under the action of gravity, all the upper parts of the intermediate columns / connecting rods 17021 and pistons 19020 of the above-water component 100000, the surface component 200000, and the underwater component 300000 synchronously descend as the water level drops. The upper part of the intermediate column / connecting rod 17021 drives the piston 19020 of the underwater water pump downward to complete the water pumping action, forcing the water in the cylinder 19010 to pass through the water pipe 19070 fixed to the top platform 5010 of the above-water bracket 5 on one side of the valve pipeline assembly 19. , water is continuously pumped into the surface water reservoir 1 through the water outlet placed above the surface water reservoir 1. At this time, you can choose to close the electric valve 3091 at the bottom of the surface water reservoir and the electric valve 3093 at the bottom of the bucket to only fill water into the surface water reservoir 1, or you can choose to open the electric valve 3091 at the bottom of the surface water reservoir and the electric valve 3093 at the bottom of the bucket at the same time, and use the flexible water pipe 3092 to connect the surface water reservoir 1 and the surface water reservoir 6. When the second liquid level sensor 6010 reports that the surface water reservoir 6 is full of water, the electrical automatic control cabinet 12 issues a command to close the electric valve 3091 at the bottom of the surface water reservoir and the electric valve 3093 at the bottom of the bucket to stop filling water into the surface water reservoir 6, and then start filling water into the surface water reservoir 1 only.During the water filling and energy storage process, the electrical automatic control cabinet 12 can preferably command the submersible pump 21 to open, accelerating the water filling process, and shut down the submersible pump 21 when the liquid level sensor reports that the reservoir is full. When needed, the filled surface reservoir 1 and surface reservoir 6 can convert the water potential energy and water gravity into electrical energy via the water gravity generator set 3 and surface generator 8. Preferably, the submersible pump 21 unique to this application is located underwater and connected to a column 17010 of the underwater support frame structure 17, used to direct water below the surface into the surface reservoir 1 and surface reservoir 6.

[0103] As shown in Figures 1 to 19, the electrical automatic control cabinet 12 stops releasing the temporary brakes of the upper and lower transmission shafts according to the feedback signal from the first liquid level sensor 2 when the water reservoir 1 is empty, the upper speed change gear box 3021, the lower speed change gear box 3022, the upper transmission shaft 3031, and the lower transmission shaft 3032 stop rotating, and the water gravity generator set 3 suspends power generation; once the liquid level sensor 2 of the water reservoir 1 feedbacks that the water level is at a higher or highest level, and the external power grid or the battery pack 10 needs to be charged, the electrical automatic control cabinet 12 issues a command , open the electric valve 3091 above each bucket at the bottom of the water reservoir 1, and close the electric valve 3093 at the bottom of each bucket. The water in the water reservoir 1 is injected into the bucket 3070 through the flexible water pipe 3092 until each bucket 3070 is filled with water. The bucket liquid level sensor 3081 set at the relevant line where the balance block 3080 and the bucket 3070 intersects feeds back to the electrical automatic control cabinet 12 that the bucket 3070 is full of water. At this time, the electrical automatic control cabinet 12 issues a command to close the electric valve 3091 above each bucket at the bottom of the water reservoir 1. The electric valve 3091 on the left and right sides stops filling water into each water bucket 3070. When each water bucket 3070 is filled with water, the electrical automatic control cabinet 12 issues a command to release the temporary brake of the upper transmission shaft 3031 and the lower transmission shaft 3032. The water bucket 3070, the balance block 3080 and the full bucket of water carried by the water bucket 3070 move downward from the highest point or a higher position, driving the counterweight 3090 on the other side of the sprocket 3050 and the chain 3060 to move upward. When the counterweight 3090 approaches and reaches the set highest or higher position, the counterweight 3090 is located at the top of the counterweight 3090. The spring 3094 at the end plays a buffering role to prevent the counterweight 3090 from violently colliding with the bottom of the water reservoir 1. At the same time, the position sensor 3096 reports to the electrical automatic control cabinet 12 that the counterweight 3090 has reached the set highest or upper position. Based on the feedback from the position sensor 3096, the electrical automatic control cabinet 12 issues instructions to the upper speed change gear box 3021 and the lower speed change gear box 3022 to brake the upper transmission shaft 3031 and the lower transmission shaft 3032, thereby stopping the water bucket 3070, the balance block 3080, and the counterweight 3090 from continuing to move.Then the electrical automatic control cabinet 12 issues a command to open the electric valve 3093 at the bottom of the bucket and start emptying the bucket 3070. The water in the bucket 3070 is injected into the water surface reservoir 6 through the flexible water pipe 3092. When the bucket 3070 is completely emptied, the bucket liquid level sensor 3081 set at the relevant line where the balance block 3080 and the bucket 3070 intersect is fed back to the electrical automatic control cabinet 12 that the bucket 3070 has been emptied. At this time, the electrical automatic control cabinet 12 issues a command to release the temporary brakes of the upper transmission shaft 3031 and the lower transmission shaft 3032. Since the mass of the counterweight 3090 is greater than the sum of the masses of the empty bucket 3070 and the balance block 3080, the counterweight 3090 begins to move downward from the highest point or the higher point, driving the bucket on the other side of the sprocket 3050 and the chain 3060. 3070 and the balancing block 3080 move upward. When the water bucket 3070 and the balancing block 3080 approach and reach the set highest or higher position, the spring 3094 located at the top of the water bucket 3070 and the balancing block 3080 plays a buffering role to prevent the water bucket 3070 and the balancing block 3080 from violently colliding with the bottom of the water reservoir 1. At the same time, the position sensor 3096 reports to the electrical automatic control cabinet 12 that the water bucket 3070 and the balancing block 3080 have reached the set highest or higher position. Based on the feedback from the position sensor 3096, the electrical automatic control cabinet 12 issues a command to the upper speed change gear box 3021 and the lower speed change gear box 3022 to brake the upper transmission shaft 3031 and the lower transmission shaft 3032, thereby stopping the water bucket 3070, the balancing block 3080, and the counterweight 3090 from continuing to move.Next, the electrical automatic control cabinet 12 issues another command to open the electric valve 3091 above each bucket at the bottom of the water reservoir 1 and close the electric valve 3093 at the bottom of each bucket. The water in the water reservoir 1 is injected into the bucket 3070 through the flexible water pipe 3092 until each bucket 3070 is filled with water. The bucket liquid level sensor 3081 set at the relevant line where the balance block 3080 and the bucket 3070 intersects feedback to the electrical automatic control cabinet 12 that the bucket 3070 is full of water. At this time, the electrical automatic control cabinet 12 issues a command to close the electric valve 3091 above each bucket at the bottom of the water reservoir 1, stopping the filling of water into each bucket 3070. At this time, the electrical automatic control cabinet 12 issues a command to release the temporary brakes of the upper transmission shaft 3031 and the lower transmission shaft 3032. Since the mass of the counterweight 3090 is less than the sum of the masses of the full bucket 3070 and the balance block 3080, the full bucket of water carried by the bucket 3070, the balance block 3080, and the bucket 3070 moves downward from the highest point or a higher position, driving the sprocket 3050 and the chain 306 The counterweight 3090 on the other side moves upward. When the counterweight 3090 approaches and reaches the set highest or upper position, the spring 3094 at the top of the counterweight 3090 plays a buffering role to prevent the counterweight 3090 from violently colliding with the bottom of the water reservoir 1. At the same time, the position sensor 3096 reports to the electrical automatic control cabinet 12 that the counterweight 3090 has reached the set highest or upper position. Based on the feedback from the position sensor 3096, the electrical automatic control cabinet 12 controls the upper speed change gear box 3021 and the lower speed change gear box 3022. 022 issues a command to brake the upper and lower drive shafts 3031 and 3032, halting the movement of the water bucket 3070, the balance block 3080, and the counterweight 3090. This cycle repeats, causing the water bucket 3070, the balance block 3080, and the counterweight 3090 to move up and down, driving the upper and lower gravity generators 3011 and 3012 to generate electricity. Through the DC-AC conversion and phase modulation functions of the electrical automatic control cabinet 12, this allows for direct power transmission to the external power grid or for charging the battery pack 10. When the water in the upper water reservoir 1 is completely drained, the electrical automatic control cabinet 12, based on the feedback signal from the first liquid level sensor 2, stops temporarily releasing the brakes on the upper and lower drive shafts, temporarily halting power generation by the upper and lower gravity generators 3011 and 3012.

[0104] As shown in Figures 1 to 19, the electrical automatic control cabinet 12 issues instructions based on the feedback signal from the second liquid level sensor 6010. When the second liquid level sensor 6010 feeds back that the water level of the surface water reservoir 6 is at the highest or higher position, the surface water reservoir electric valve 7 is opened, and the water in the surface water reservoir gushes out, driving the surface generator 8 and its surface generator 8 turbine blades or rotors 8003 to rotate. The blades or rotors of the surface generator 8 turbine blades or rotors 8003 can steplessly adjust the angle and pitch according to different water flow speeds and water flow sizes, converting the kinetic energy of the water into electrical energy; when the second liquid level sensor 6010 feeds back that the water level of the surface water reservoir 6 is at the lowest or lower position, the surface water reservoir electric valve 7 is closed to stop generating electricity. However, when the external power grid has sufficient power, the battery pack 10 of the device is fully charged, and the liquid level sensors of the above-water reservoir 1 and the surface water reservoir 6 report that the water level is low, when the tide recedes or the water level begins to drop, the underwater pump 19 pumps water into the above-water reservoir 1, storing energy in the form of water potential energy and gravity. Preferably, in the absence of receding tide or water level drop, the electrical automatic control cabinet 12 can also issue a command to start the submersible pump 21 to accelerate the water filling operation, and shut down the submersible pump 21 when the liquid level sensor reports that the water reservoir is full of water. When needed, the above-water reservoir 1 and the surface water reservoir 6 can convert the water potential energy and water gravity into electrical energy through the water gravity generator set 3 and the surface generator 8. Preferably, as shown in FIG1 , the hydroelectric energy storage device of the present application can also be built in a pumped storage power station or an ordinary hydroelectric power station, or at the gates of mountains, fjords, rivers, and lakes, utilizing the ups and downs of the water level and the kinetic energy of the water there to achieve the purpose of power generation and energy storage. Preferably, as shown in FIG1 , the raft is provided with a drainage hole to facilitate the water gushing out of the surface water reservoir 6 when the surface generator 8 generates electricity to directly enter the surrounding water body, thereby preventing the water from flowing back when the electric valve 7 of the surface water reservoir is opened, so as to cooperate with the surface generator 8 to generate electricity normally. Preferably, the hydroelectric energy storage device of the present application adopts modern advanced sealing, waterproof, leak-proof, and rust-proof technologies to ensure the safe, stable and efficient operation of the device, especially the underwater components. Preferably, the hydroelectric energy storage device of the present application can be equipped with a cover or roof for the water reservoir 1 and the surface water reservoir 6 to prevent the evaporation of the pool water.

[0105] Optionally, referring to Figures 20-21, a multi-stage diversion pipe is added to the first underwater turbine blade. A multi-stage diversion pipe refers to a pipe with a water inlet at a distance having a much larger cross-sectional area than the water outlet, where the outlet is located near the first underwater turbine blade. The first underwater turbine blade is the underwater turbine blade on the rightmost underwater turbine bracket in the figures of this application. According to fluid dynamics and the law of conservation of mass, without adding external energy, water is transported from a location far from the coast to a location near the coast through a pipe. The pipe diameter decreases significantly as it approaches the coast. According to the law of conservation of mass, the water velocity must increase to maintain a constant mass flow rate, so the water velocity increases near the coast outlet. The multi-stage diversion pipe directs the high tide water at the far front of the device through a gradually narrowing pipe to the device's underwater turbine blades. The rapidly flowing water generated by the water inlet's much larger cross-sectional area than the water outlet drives the underwater turbine blades, improving power generation efficiency. In order to avoid the multi-stage diversion pipes shielding and blocking the normal advancement of the water flow in front of the entire device, the multi-stage diversion pipe is designed to first separate to the left and right to avoid the normal route of the water flow. Then, when the diameter of the pipe gradually increases, a method similar to laying an underwater tunnel is used to bury the thick part of the pipe underground, and then continue to separate to both sides and rise again to a position below the horizontal plane far in front of the device, with the left and right openings facing the direction of the wave.

[0106] The present application has at least one of the following advantages:

[0107] (a) The hydroelectric energy storage device of the present application utilizes waste ship hulls, especially the hulls of large or ultra-large ships and their ballast water systems, which can save resources and reduce pollution to the environment;

[0108] Optionally, (b) the hydroelectric energy storage device of the present application converts the kinetic energy of the water into potential energy of the water and stores it, or finally converts it into electrical energy through a generator when needed, by providing an underwater pumping and water pumping pump and its valve pipeline group (underwater pumping assembly) and utilizing water level changes to pump water into a surface water reservoir or an above-water water reservoir;

[0109] Optionally, (c) the hydroelectric power generation and energy storage device of the present application can be set in the ocean, lakes, rivers, or other water bodies with obvious water level changes and flowing water, and use the high and low tides or water level fluctuations to achieve the purpose of power generation and energy storage. It can also be built upstream or downstream of a pumped storage power station or a hydroelectric power station, and use the water level fluctuations to achieve the purpose of power generation and energy storage. In addition, the present application greatly optimizes the utilization of the potential energy generated by water level changes and the kinetic energy generated by water flow in new energy production technology, and converts them into electrical energy to achieve the purpose of power generation or energy storage.

[0110] Optionally, (d) the hydroelectric energy storage device of the present application accelerates the forward rotation of the turbine blades or rotor of the underwater turbine blade generator set 18 by arranging the underwater turbine blade generator set in front of the underwater pump assembly during the pumping process of the underwater pump assembly;

[0111] Optionally, (e) a floating raft is provided to adjust the draft of the hydroelectric energy storage device. The floating raft can work independently. When a waste ship is used to rebuild the surface water storage tank of the hydroelectric energy storage device, the floating raft can be connected to the original ballast water system of the waste ship to work together.

[0112] Optionally, (f) by providing an above-water reservoir or a surface reservoir, the hydroelectric energy storage device can also collect rainwater on rainy days. When the above-water reservoir or the surface reservoir is filled with rainwater, the collected rainwater can be used to generate electricity;

[0113] Optionally, (g) by setting up an electrical automatic control cabinet, not only can the power generation of each generator, the charging and discharging of the battery pack, the opening and closing of each electric valve be controlled, and according to the feedback of each sensor, the pumping, water injection and drainage actions can be completed, but also the angle and pitch adjustment of the turbine blades or rotors of the surface generator and the underwater turbine blade generator group, the DC-AC conversion function and the conversion of various working conditions of each generator such as shutdown-generation, generation-shutdown, generation-phase adjustment, phase adjustment-generation, shutdown-phase adjustment, phase adjustment-shutdown, etc. can be completed, and external power input and output and related information interaction and communication can be controlled.

[0114] All documents mentioned in this application are considered to be included in their entirety in the disclosure of this application so that they can be used as a basis for modification when necessary. In addition, it should be understood that after reading the above disclosure of this application, those skilled in the art may make various changes or modifications to this application, and these equivalent forms also fall within the scope of protection claimed in this application.

Claims

1. A hydroelectric energy storage device utilizing water level changes, characterized in that: include: A floating unit, an underwater component, and an above-water power generation component, wherein the above-water power generation component is arranged above the floating unit, and the underwater component is arranged below the floating unit; Wherein, the above-water power generation component comprises an above-water reservoir, the underwater component comprises an underwater pump assembly, an underwater accommodating cylinder, and an underwater supporting frame structure, the accommodating cylinder is provided with a first one-way valve and a second one-way valve, one end of the underwater supporting frame structure is fixedly connected to the underwater accommodating cylinder, and the other end is fixed to the bottom of the water, the first one-way valve is configured to only allow fluid to flow into the underwater accommodating cylinder from the outside, and the second one-way valve is configured to only allow fluid to be discharged from the underwater accommodating cylinder to the outside; The underwater pump assembly is fixedly connected to the floating unit, and the underwater pump assembly is partially arranged in the underwater accommodating cylinder and can slide up and down in the underwater accommodating cylinder. When the tide rises and the water level rises, the floating unit rises, thereby driving the underwater pump assembly to move upward, so that seawater or river water is pumped into the underwater accommodating cylinder through the first one-way valve. At this time, the first one-way valve is in an open position and the second one-way valve is in a closed position; when the tide recedes or the water level drops, the floating unit drops, thereby driving the underwater pump assembly to move downward, and then the seawater or river water in the underwater accommodating cylinder is pumped out to the above-water reservoir through the second one-way valve and the connecting pipe. At this time, the first one-way valve is in a closed position and the second one-way valve is in an open position.

2. The hydroelectric energy storage device according to claim 1, characterized in that: The above-water power generation component further comprises a downcomer and a turbine, through which seawater or river water in the above-water reservoir is supplied to the first turbine, so that the turbine rotates to generate electricity.

3. The hydroelectric energy storage device according to claim 1, characterized in that: The underwater pump assembly includes an underwater connecting rod and an underwater piston. The underwater connecting rod is fixedly connected to the floating unit. The underwater piston is connected to the underwater connecting rod and moves synchronously. The underwater piston can slide up and down in the underwater accommodating cylinder.

4. The hydroelectric energy storage device according to claim 3, characterized in that: The hydroelectric energy storage device further comprises a water surface component, the water surface component is located on the floating unit, and the water surface component comprises a water surface reservoir; wherein, The above-water power generation component also includes a transmission assembly, which includes an upper transmission shaft, a lower transmission shaft, an upper rotating mechanism located on the upper transmission shaft, a lower rotating mechanism located on the lower transmission shaft, and a chain connecting the upper rotating mechanism and the lower rotating mechanism. The movement of the chain can drive the upper rotating mechanism and the lower rotating mechanism to rotate. The upper transmission shaft moves synchronously with the upper rotating mechanism, and the lower transmission shaft moves synchronously with the lower rotating mechanism. The upper transmission shaft is arranged in the above-water reservoir, and the lower transmission shaft is located in the water surface reservoir.

5. The hydroelectric energy storage device according to claim 4, characterized in that: It also includes a water-carrying and water-draining assembly, which includes a pair of counterweights and a water bucket assembly, wherein the counterweights and the water bucket assembly are respectively arranged on opposite sides of the chain, and the weight of the counterweights and the weight of the water bucket assembly are arranged so that they can only move in opposite directions, and the water bucket assembly cooperates with the counterweights to carry water in the above-water reservoir to the surface reservoir, and at the same time drives the upper transmission shaft and the lower transmission shaft to rotate, thereby realizing power generation.

6. The hydroelectric energy storage device according to claim 5, characterized in that: After the water bucket in the water bucket assembly is filled with water from the water reservoir on the water surface, it moves downward together with the chain. At this time, the counterweight moves upward, thereby driving the upper rotating mechanism, the lower transmission mechanism, the upper transmission shaft and the lower transmission shaft to rotate. When the water bucket assembly descends to the lowest position or a lower position, all the water in the water bucket is discharged into the water surface reservoir. Then, under the action of gravity, the water bucket assembly moves upward and the counterweight moves downward. When the water bucket assembly rises to the highest position or a higher position, the water bucket is filled with water from the water reservoir on the water surface again. Then, the water bucket assembly moves downward and the counterweight moves upward. This cycle is repeated. The up and down movement of the water bucket assembly and the counterweight drives the rotation of the upper transmission shaft and the lower transmission shaft, thereby achieving power generation.

7. The hydroelectric energy storage device according to claim 6, characterized in that: The water-carrying and water-draining assembly includes multiple pairs of counterweights and bucket assemblies, and multiple bucket assemblies in the multiple pairs of counterweights and bucket assemblies are configured to simultaneously receive water in the upper water reservoir and descend, or multiple bucket assemblies in the multiple pairs of counterweights and bucket assemblies are configured to sequentially receive water in the upper water reservoir and descend sequentially.

8. The hydroelectric energy storage device according to claim 7, characterized in that: The water surface component also includes a second liquid level sensor, a third electric valve, and a water surface generator. The third electric valve is arranged at the tail of the water surface reservoir. When the water level of the water surface reservoir remains basically unchanged, the third electric valve is configured to be in an open state, so that the water in the water surface reservoir gushes out and drives the turbine blades or rotors of the water surface generator to rotate, thereby generating electricity.

9. The hydroelectric energy storage device according to claims 1 to 8, characterized in that: It also includes an auxiliary fixing assembly, which is configured to prevent the floating unit from oscillating left and right. There are multiple auxiliary fixing assemblies, and the auxiliary fixing assemblies are located below the floating unit.

10. The hydroelectric energy storage device according to any one of claims 1 to 8, characterized in that: It also includes an underwater turbine blade generator bracket and an underwater turbine blade generator set arranged on the underwater turbine blade generator bracket. The underwater turbine blade generator bracket is fixed on the underwater supporting frame structure, and the turbine blades of the underwater turbine blade generator set face the water inlet of the first one-way valve.

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