Wave energy pickup energy storage device, energy storage driving device and energy storage driving system

Abstract

The application discloses a wave energy pickup energy storage device, an energy storage driving device and an energy storage driving system, the wave energy pickup energy storage device comprises a bottom pile, a center column and a floating body; the energy pickup energy storage driving device comprises a wave energy pickup device and a driving machine / mechanism; the energy pickup energy storage driving system comprises an energy pickup module, an energy storage module and a driving module; the energy pickup module comprises a plurality of wave energy pickup devices, the energy storage module comprises a plurality of energy collection and storage containers and a plurality of pressure stabilizing containers, the pressure stabilizing containers are connected with the driving module through pipelines and can drive the driving module to work and output power or energy. The application can effectively improve the pickup and utilization efficiency of wave energy and can fully absorb wave energy.

Description

Technical Field

[0001] This invention relates to the field of renewable energy technology, particularly to the field of wave energy technology, and specifically to a wave energy harvester and storage device and energy storage drive system. Background Technology

[0002] The development of human society and economy has led to an ever-increasing demand for energy, especially electricity. However, the precious fossil fuels that humanity has relied on since the Industrial Revolution are becoming increasingly depleted. The accumulation of greenhouse gases generated by human activities and their impact on the Earth's environment are approaching a critical point, making the control of greenhouse gas emissions, especially CO2 emissions, an urgent priority. Using renewable resources, which are not fossil fuels, to obtain energy is the best choice for humanity to maintain the Earth's environment and achieve sustainable development, and this is becoming increasingly urgent.

[0003] 71% of the Earth's surface is covered by oceans, which contain enormous energy resources, including tidal energy, ocean current energy, and wave energy. These renewable energy sources are abundant and inexhaustible.

[0004] Although the total reserves of wave energy in the global ocean are large, the local resource concentration is not high in most sea areas because waves are distributed across the entire vast ocean surface. Therefore, the grade is relatively low. In addition, wave energy is difficult to obtain, especially on a large scale, in an economical and high-quality manner, because wave amplitude and frequency change irregularly and with large fluctuations due to the influence of wind and sunlight on the ocean surface.

[0005] While there are some existing technologies that utilize wave energy for power generation, almost all of them suffer from low efficiency in wave energy collection and utilization. They also struggle to address issues such as irregular and unstable power generation due to the chaotic and random variations in wave amplitude and frequency, resulting in poor power quality. Consequently, the generated power is difficult to connect to the grid and even more difficult to promote on a large scale and economically. Summary of the Invention

[0006] To address the aforementioned shortcomings of existing technologies, the present invention aims to provide a wave energy harvester and storage device, as well as an energy storage drive system. This system effectively improves the efficiency of wave energy harvesting and utilization. Furthermore, it allows for the large-scale deployment of corresponding harvesters in marine areas to form a high-power energy harvesting system, based on local energy demands (including but not limited to high-pressure seawater, compressed air, or electricity), thus fully absorbing wave energy. When used in a power generation system, it overcomes the instability in power generation caused by wave instability, thereby achieving efficient and full harvesting and utilization of wave energy for power generation, producing high-quality electricity that meets grid standards, thus improving the economic viability of renewable energy power generation. It can also provide other forms of energy, such as high-pressure seawater and compressed air.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a wave energy harvesting and storage device, characterized in that it includes a bottom pile, a central column and a floating body; The bottom pile is used for fixed connection with the seabed or pile foundation; the central column is set vertically, and its lower end is fixedly connected with the bottom pile, wherein the central column is a hollow structure; The float is annular with a hollow interior and is fitted onto a central column, allowing it to move up and down along the column. A connecting rod is vertically positioned in the middle of the float, passing through the top of the central column and slidably connected to it. One end of the connecting rod extending into the central column is connected to a piston disc, which is slidably connected to the inner wall of the central column and has a sealed connection with the inner wall of the central column. This creates an upper compression cylinder above the piston disc and a lower compression cylinder below it, and the connecting rod, piston disc, and float can move synchronously. A first water inlet pipe and a second water inlet pipe are respectively provided at the upper and lower parts of the central column. An air inlet pipe and a high-pressure working fluid discharge pipe are provided at the upper part of the central column. The high-pressure working fluid discharge pipe is an elastic pipe or a telescopic pipe and is connected to the interior of the float. A first drain pipe is also provided at the lower part of the central column. An exhaust pipe is provided at the upper part of the float and a second drain pipe is provided at the lower part. The exhaust pipe and the second drain pipe are connected to a high-pressure working fluid output pipe. The first drain pipe is connected to the interior of the float through an elastic pipe or a telescopic pipe, or is connected to the high-pressure working fluid output pipe. One-way flow valves are installed on the first water inlet pipe, the second water inlet pipe, the first drain pipe, the air inlet pipe, the high-pressure working medium discharge pipe, the exhaust pipe, the second drain pipe, and the high-pressure working medium output pipe; electrically controlled valves are also installed on the first water inlet pipe, the air inlet pipe, the exhaust pipe, the second drain pipe, and the high-pressure working medium output pipe.

[0008] Furthermore, the upper part of the bottom pile is a hollow structure, forming an energy storage cavity. The first drainage pipe, the second drainage pipe, the exhaust pipe, and the high-pressure working fluid output pipe are all connected to the energy storage cavity of the bottom pile. The high-pressure working fluid output pipe extends to the middle of the energy storage cavity.

[0009] Furthermore, after the second drain pipe and the exhaust pipe are connected, they are connected to the energy storage chamber through a connecting pipe, which is a flexible pipe or a telescopic pipe.

[0010] Furthermore, a liquid level sensor and a pressure sensor are installed inside the energy storage chamber.

[0011] Furthermore, a level sensor and a pressure sensor are installed inside the float, and a position sensor for detecting the relative position between the float and the central column is also installed on the energy pickup.

[0012] Furthermore, the pile foundation adopts a suspended platform submerged below the sea surface, which is fixedly connected to the seabed by cables; or the pile foundation is fixedly connected to, but not limited to, wind power foundations, offshore oil facilities, and deep-sea aquaculture facilities.

[0013] A method for regulating the frequency of a floating body based on an upper wave energy harvesting and storage device, characterized by the following steps: 1) Install the wave energy harvester in the sea area and ensure that the air inlet of the air intake pipe at the top of the central column is always above the sea surface; 2) Open the electrically controlled valves on the air inlet pipe and the second drain pipe, close the electrically controlled valves on the first water inlet pipe and the exhaust pipe, and move the float up and down to reduce its mass; 3) Close the electrically controlled valves on the air inlet pipe and the second drain pipe, open the electrically controlled valves on the first water inlet pipe and the exhaust pipe, and move the float up and down to increase its mass, thereby achieving controlled adjustment of the float's mass and natural frequency.

[0014] A wave energy harvesting and storage drive device is characterized by comprising the aforementioned wave energy harvester and drive mechanism; the bottom pile of the wave energy harvester is fixedly connected to a pile foundation or the seabed, and the air inlet of the air inlet pipe at the top of its central column is always located above the sea surface; in the initial state, when the sea surface is calm and located at the midpoint between the highest point of the sea surface during high tide and the lowest point of the sea surface during low tide, the piston disc is located in the middle of the central column; the drive mechanism is a mechanism driven by water energy and / or gas energy, and the high-pressure working fluid output pipe of the wave energy harvester is connected to the energy inlet end of the water energy and / or gas energy driven mechanism respectively.

[0015] An energy-harvesting and energy-storage drive system is characterized by comprising an energy-harvesting module, an energy-storage module, and a drive module; the energy-harvesting module includes several wave energy harvesters as described above, wherein the bottom pile of the wave energy harvester is fixedly connected to the pile foundation or the seabed, and the air inlet of the air inlet pipe at the top of its central column is always located above the sea surface. In the initial state, when the sea surface is calm and located at the midpoint between the highest position of the sea surface during high tide and the lowest position of the sea surface during low tide, the piston disc is located in the middle of the central column. Each wave energy harvester's high-voltage working fluid output pipe is connected to an energy collection pipeline; the energy storage module includes several energy collection and storage containers and multiple pressure stabilizing containers, all of which are sealed containers; the energy collection and storage containers are all connected to the top of the energy collection pipeline via connecting pipes; the tops and bottoms of the multiple pressure stabilizing containers are connected sequentially; one end of the energy collection pipeline is closed, and the other end is connected to one of the pressure stabilizing containers; the top of each energy collection and storage container is connected to a gas pipe branch, each gas pipe branch is connected to a gas pipe manifold, which is connected to one of the pressure stabilizing containers; the bottom of each energy collection and storage container is connected to a water pipe branch, each water pipe branch is connected to a water pipe manifold, which is connected to one of the pressure stabilizing containers; The pressure stabilizing container is connected to the drive module through a pipe and can drive the drive module to work and output power or energy.

[0016] Furthermore, several energy collectors are distributed into multiple groups, each group of energy collectors being connected to an energy collection pipeline; wherein, multiple energy collection pipelines are connected to multiple energy collection and storage containers, and multiple energy collection pipelines are simultaneously connected to a pressure stabilizing container or are individually connected to a pressure stabilizing container; or, multiple energy collection pipelines are connected to a manifold of energy collection pipelines and then connected to multiple energy collection and storage containers, and pressure sensors are installed on each energy collection pipeline, and electrically controlled valves and check valves are installed between the energy collection pipelines and the manifold of energy collection pipelines. At the same time, the manifold of energy collection pipelines is connected to one of the pressure stabilizing containers, and a check valve is installed between the manifold of energy collection pipelines and the pressure stabilizing container.

[0017] Compared with the prior art, the present invention has the following advantages: 1. This invention provides a marine energy harvesting system that is simple in structure, reliable in operation, and low in cost.

[0018] 2. The energy harvester disclosed in this solution can better collect wave energy, and can produce both compressed air and high-pressure seawater. It is a highly efficient wave energy harvester and array that can be widely promoted globally. It is a wave energy harvesting system that can collect ocean wave energy on a large scale over a wide area according to the marine conditions and the local energy demand.

[0019] 3. The solution disclosed in this invention can be applied to power generation systems. It can generate electricity using the produced high-pressure air and high-pressure seawater, or it can collect and store the high-pressure air and seawater delivered by each energy collector through an energy storage device, thereby storing energy and generating electricity when needed, such as for grid peak shaving.

[0020] 4. When this system is applied to a power generation system, the working medium is first placed into a pressure stabilizing container and then transported to the generator set. This can overcome the various instabilities of wave energy power generation caused by the instability, frequency and amplitude of wave energy, and enable the system to provide high-quality power that meets grid connection standards.

[0021] 5. When this system is applied to a power generation system, its scale can be adjusted according to demand. It can generate electricity on a large scale and connect to the grid. Through large-scale and reasonable deployment, this system can fully absorb the energy of the current sea waves. It can also provide small-load power as needed, such as to meet the power supply for navigation marks or to meet the power needs of small islands.

[0022] 6. The energy pickup capability of the energy pickup device can be greatly improved with the increase of waves, with no upper limit. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the invention.

[0024] 1—Bottom pile; 2—Central column; 3—Float; 4—Connecting rod; 5—Piston disc; 6—First water inlet pipe; 7—Second water inlet pipe; 8—Air inlet pipe; 9—High-pressure working medium discharge pipe; 10—First drain pipe; 11—Exhaust pipe; 12—Second drain pipe; 13—High-pressure working medium output pipe; 14—Connecting pipe. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Example: See Figure 1 A wave energy harvester includes a base pile 1, a central column 2, and a float 3.

[0029] The bottom pile 1 is used for fixed connection to the seabed or pile foundation. In implementation, the pile foundation is a floating platform submerged below the sea surface, which is fixedly connected to the seabed by cables; or the pile foundation is fixedly connected to, but is not limited to, wind power foundations, offshore oil facilities, and deep-sea aquaculture facilities. The central column 2 is vertically installed, and its lower end is fixedly connected to the bottom pile 1, wherein the central column 2 is a hollow structure.

[0030] The float 3 is annular with a hollow interior, forming an energy storage cavity. A connecting plate is mounted on the float 3. A connecting rod 4 is vertically positioned in the middle of the float 3. The upper end of the connecting rod 4 is fixedly connected to the connecting plate, and the lower end passes through the upper end of the central column 2 and slides along it. One end of the connecting rod 4 extending into the central column 2 is connected to a piston disc 5. In implementation, the float 3 includes an upper side plate and an annular structure located below the upper side plate, forming a groove in the lower middle of the float 3. This groove allows the float to be fitted onto the central column 2 and move up and down along it. To further improve the buoyancy and energy storage volume of the float 3, both the upper side plate and the annular structure are hollow and interconnected to form a double-layer structure. The piston disc 5 is slidably connected to the inner wall of the central column 2, and its circumference is sealed to the inner wall of the central column 2, forming an upper compression cylinder above the piston disc 5 and a lower compression cylinder below it. The connecting rod 4, piston disc 5, and float 3 can move synchronously. In implementation, several through holes are provided on the upper side plate, corresponding to the upper end of the central column 2, to facilitate the entry and exit of gas between the central column 2 and the float 3 during the up-and-down movement of the float 3, making the movement of the float 3 smoother.

[0031] A first water inlet pipe 6 and a second water inlet pipe 7 are respectively provided at the upper and lower parts of the central column 2. An air inlet pipe 8 and a high-pressure working fluid discharge pipe 9 are provided at the upper part of the central column 2. The high-pressure working fluid discharge pipe 9 is an elastic or telescopic pipe and is connected to the interior of the float 3. This prevents damage to the high-pressure working fluid discharge pipe 9 due to the up-and-down movement of the float 3, thereby improving the stability and adaptability of the entire energy pickup. A first drain pipe 10 is also provided at the lower part of the central column 2. An exhaust pipe 11 is provided at the upper part of the float 3, and a second drain pipe 12 is provided at the lower part. The exhaust pipe 11 and the second drain pipe 12 are connected to a high-pressure working fluid output pipe 13. The first drain pipe 10 is connected to the interior of the float 3 through an elastic or telescopic pipe, or to the high-pressure working fluid output pipe 13. During processing, the first water inlet pipe 6 and the second water inlet pipe 7 pass through the outer wall of the central column 2 and are connected to a filter; or the first water inlet pipe 6 and the second water inlet pipe 7 are connected and then connected to a main water inlet pipe, which is located near the lower end of the central column 2 and extends to the outside of the central column 2 before connecting to a filter. In practice, a liquid level sensor and a pressure sensor are installed inside the float 3 to monitor the liquid level and pressure inside the float 3 in real time; a position sensor is also installed on the energy pickup to detect the relative position between the float 3 and the central column 2.

[0032] One-way valves (valves that enable unidirectional fluid flow through control) are installed on the first water inlet pipe 6, the second water inlet pipe 7, the first drain pipe 10, the air inlet pipe 8, the high-pressure working fluid discharge pipe 9, the exhaust pipe 11, the second drain pipe 12, and the high-pressure working fluid output pipe 13. As one embodiment, the one-way valves are simple in structure, low in cost, and have good stability. Electrically controlled valves are also installed on the first water inlet pipe 6, the air inlet pipe 8, the exhaust pipe 11, the second drain pipe 12, and the high-pressure working fluid output pipe 13.

[0033] In specific implementation, the upper part of the bottom pile 1 is a hollow structure, forming an energy storage cavity. The first drain pipe 10, the second drain pipe 12, the exhaust pipe 11, and the high-pressure working fluid output pipe 13 are all connected to the energy storage cavity of the bottom pile 1. The high-pressure working fluid output pipe 13 extends to the middle of the energy storage cavity, thereby collecting water or air from the upper compression cylinder, the lower compression cylinder, and the float 3 to form a primary energy collector, which is then uniformly output through the high-pressure working fluid output pipe 13. In implementation, the second drain pipe 12 and the exhaust pipe 11 are connected to the energy storage cavity through a connecting pipe 14. This connecting pipe 14 is an elastic or telescopic pipe, giving it certain deformation performance, better adapting to the movement of the float 3, and ensuring the stability of the connecting pipe 14. A liquid level sensor and a pressure sensor are installed in the energy storage cavity to detect the liquid level and pressure within the energy storage cavity.

[0034] During operation, when the piston disc 5 moves downward with the waves (float 3), a negative pressure is formed in the upper compression cylinder. As needed, the air intake valve and / or the electrically controlled valve on the first water inlet pipe 6 are opened, the one-way valve is pushed open, and the one-way valve on the high-pressure working fluid discharge pipe 9 is closed. Air and / or seawater are drawn into the upper compression cylinder through the pipes and valves. The one-way valve on the second water inlet pipe 7 of the lower compression cylinder is closed. At this time, the pressure in the lower compression cylinder increases, and the one-way valve on the first drain pipe 10 of the lower compression cylinder is opened. The high-pressure working fluid enters the energy storage chamber above the energy pickup bottom pile 1 through the first drain pipe 10. Correspondingly, when the piston disc 5 moves upward with the waves (float 3), a negative pressure is formed in the lower compression cylinder, the one-way valve on the second water inlet pipe 7 opens, and the one-way valve on the first drain pipe 10 of the lower compression cylinder closes, allowing seawater to enter the lower compression cylinder; at this time, the air inlet valve and the one-way valve on the first water inlet pipe 6 close, the pressure in the upper compression cylinder increases, the one-way valve on the high-pressure working fluid discharge pipe 9 opens, and the air and / or seawater in the upper compression cylinder enter the energy storage chamber of the float 3 through the high-pressure working fluid discharge pipe 9.

[0035] The energy storage chamber of float 3 stores energy due to the compression of the air stored inside. As float 3 moves up and down with the waves, the upper compression cylinder continuously inputs high-pressure air and seawater into the energy storage chamber of float 3 through valves and pipes. When the electrically controlled valve on the seawater discharge pipe of float 3 is opened, the high-pressure seawater in the lower part of the energy storage chamber of float 3 enters the energy storage chamber above the bottom pile 1 through pipes and one-way valves. When the electrically controlled valve on the air exhaust pipe 11 is opened, the high-pressure air in the upper part of the energy storage chamber of float 3 can enter the energy storage chamber above the bottom pile 1 through one-way valves and pipes. The energy storage chamber above the bottom pile 1 stores energy due to the compression of the air stored in its upper part. When the pressure in the energy storage chamber above the bottom pile 1 of the energy collector is higher than the pressure in the high-pressure working medium output pipe 13, and the electrically controlled valve is opened, the high-pressure working medium in the energy storage chamber pushes open the one-way valve through the pipe and flows into the pipe and to the subsequent energy collection and storage device and pressure stabilizing container to provide a power source to drive the power equipment. Such as (including but not limited to): driving hydro-turbine generator sets to generate electricity, driving gas turbine generator sets to generate electricity, connecting to osmosis desalination equipment, driving evaporation desalination equipment, supporting power generation and using seawater to produce hydrogen, and driving various equipment that utilizes high-pressure seawater and / or high-pressure air.

[0036] When the water level in the energy storage chamber is higher than the inlet of the high-pressure working medium discharge pipe 9, the high-pressure working medium discharged by the energy pickup is water; when the water level in the energy storage chamber is lower than the inlet of the high-pressure working medium discharge pipe 9, the high-pressure working medium discharged by the energy pickup is air; when the water level in the energy storage chamber is the same as the inlet of the high-pressure working medium discharge pipe 9, the energy pickup discharges both air and water.

[0037] The method for adjusting the mass and frequency of float 3 is as follows: The control center can monitor the position sensor signal of float 3 in real time, thereby monitoring the motion status of float 3. The control center can adjust the water level in the energy storage chamber of float 3 by controlling the opening and proportion of the air intake and water intake valves of the upper compressor cylinder, and also by controlling the opening and proportion of the valves on the drain pipe and air exhaust pipe of the energy storage chamber. That is, the water level in the energy storage chamber of float 3 is controllable and adjustable, which means that the mass of float 3 is controllable and adjustable, and therefore the frequency of float 3 is controllable and adjustable.

[0038] When float 3 is in good resonance with the selected wave, the air intake valve of the upper compressor cylinder and the air exhaust valve of the energy storage chamber of float 3 can be closed as needed, so that the upper compressor cylinder only produces high-pressure water; alternatively, the water inlet valve of the upper compressor cylinder and the drain valve of the energy storage chamber of float 3 can be closed, so that the upper compressor cylinder only produces compressed air. With the mass and frequency of float 3 remaining constant, the energy pickup is in a state of dynamic stability and continuous output of high-pressure working fluid.

[0039] A method for frequency adjustment of a float 3 based on the above-mentioned wave energy harvester includes the following steps: 1) Install the wave energy harvester in the sea area, and ensure that the air inlet of the air intake pipe 8 on the upper part of the central column 2 and the upper end of the float 3 are always above the sea surface. 2) Open the electrically controlled valves on the air inlet pipe 8 and the second drain pipe 12, close the electrically controlled valves on the first water inlet pipe 6 and the exhaust pipe 11, and move the float 3 up and down to reduce the mass of the float 3. 3) Close the electrically controlled valves on the air inlet pipe 8 and the second drain pipe 12, open the electrically controlled valves on the first water inlet pipe 6 and the exhaust pipe 11, and move the float 3 up and down to increase the mass of the float 3, thereby achieving controlled adjustment of the mass and natural frequency of the float 3.

[0040] A wave energy harvesting drive device includes the aforementioned wave energy harvester and a drive mechanism. The bottom pile 1 of the wave energy harvester is fixedly connected to a pile foundation or the seabed, and the air inlet of the air inlet pipe 8 on the upper part of its central column 2 and the upper end of the float 3 are always located above the sea surface. In the initial state, when the sea surface is calm and located at the midpoint between the highest point of the sea surface during high tide and the lowest point of the sea surface during low tide, the piston disc 5 is located in the middle of the central column 2. The drive mechanism is powered by water and / or gas, and the high-pressure working fluid output pipe 13 of the wave energy harvester is connected to the energy inlet of the water and / or gas-powered drive mechanism. As one embodiment, the drive mechanism uses a hydro-generator and / or a gas turbine generator to generate electricity using this solution.

[0041] An energy-harvesting drive system includes an energy-harvesting module, an energy storage module, and a drive module. The energy-harvesting module includes several wave energy harvesters, wherein the base pile 1 of the wave energy harvester is fixedly connected to a pile foundation or the seabed, and the air inlet of the air intake pipe 8 on the upper part of its central column 2 and the upper end of the float 3 are always located above the sea surface. Initially, when the sea surface is calm and located midway between the highest point of the sea surface during high tide and the lowest point during low tide, the piston disc 5 is located in the middle of the central column 2.

[0042] Each wave energy harvester's high-pressure working fluid output pipe 13 is connected to an energy collection pipeline. In practice, the high-pressure working fluid output pipe 13 is connected to the energy collection pipeline individually, or the high-pressure working fluid output pipe 13 is connected in series and then connected to the energy collection pipeline. The energy storage module includes several energy collection and storage containers and multiple pressure-stabilizing containers, all of which are sealed containers. The energy collection and storage containers are all connected to the top of the energy collection pipeline via connecting pipes, and the tops and bottoms of the multiple pressure-stabilizing containers are sequentially connected. One end of the energy collection pipeline is closed, and the other end is connected to one of the pressure-stabilizing containers; a check valve is installed between the energy collection pipeline and the pressure-stabilizing container. The top of each energy collection and storage container is connected to a branch pipe, and each branch pipe is connected to a manifold pipe. Each branch pipe is equipped with an electrically controlled valve and a check valve. The manifold pipe is connected to one of the pressure-stabilizing containers; a check valve is installed between the manifold pipe and the pressure-stabilizing container. Each energy storage unit is connected to a branch water pipe at its bottom, and each branch water pipe is connected to a manifold water pipe. Electrically controlled valves and check valves are also installed on the branch water pipes. The manifold water pipe is connected to one of the pressure stabilizing containers; a check valve is also installed between the manifold water pipe and the pressure stabilizing container.

[0043] The pressure stabilizing container is connected to the drive module through a pipe and can drive the drive module to work and output power or energy.

[0044] In specific implementation, the drive module may employ (including but not limited to): water turbine-driven generator set for power generation, gas turbine-driven generator set for power generation, connection to osmosis desalination equipment, drive evaporation desalination equipment, support power generation and hydrogen production using seawater, and support various equipment that utilizes high-pressure seawater and / or high-pressure air.

[0045] In one implementation, several energy collectors can be distributed in multiple groups and arranged in an array, with each group of energy collectors connected to an energy collection pipeline. Multiple energy collection pipelines are connected to multiple energy storage containers, and these pipelines can be simultaneously connected to a pressure stabilizing container or individually connected to a pressure stabilizing container; alternatively, multiple energy collection pipelines can be connected to a manifold and then to multiple energy storage containers. Pressure sensors are installed on each energy collection pipeline, and electrically controlled valves and check valves are installed between the energy collection pipelines and the manifold. Simultaneously, the manifold is connected to one of the pressure stabilizing containers, and a check valve is installed between the manifold and the pressure stabilizing container.

[0046] Specifically, pressure sensors and liquid level sensors are installed in each energy storage unit and pressure stabilizing container; electrically controlled valves are installed in each connecting pipe, gas pipe branch pipe, water pipe branch pipe, and between the gas supply pipe and the gas turbine generator set and / or the water supply pipe and the water turbine generator set, so as to control the energy collection and release of each energy storage unit according to the real-time situation.

[0047] Finally, it should be reiterated that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of the present invention without departing from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A wave energy harvesting and storage device, characterized in that: Includes the bottom piles, the central column, and the buoy; The bottom pile is used for fixed connection with the seabed or pile foundation; the central column is set vertically, and its lower end is fixedly connected with the bottom pile, wherein the central column is a hollow structure; The float is annular with a hollow interior and is fitted onto a central column, allowing it to move up and down along the column. A connecting rod is vertically positioned in the middle of the float, passing through the top of the central column and slidably connected to it. One end of the connecting rod extending into the central column is connected to a piston disc, which is slidably connected to the inner wall of the central column and has a sealed connection with the inner wall of the central column. This creates an upper compression cylinder above the piston disc and a lower compression cylinder below it, and the connecting rod, piston disc, and float can move synchronously. A first water inlet pipe and a second water inlet pipe are respectively provided at the upper and lower parts of the central column. An air inlet pipe and a high-pressure working fluid discharge pipe are provided at the upper part of the central column. The high-pressure working fluid discharge pipe is an elastic pipe or a telescopic pipe and is connected to the interior of the float. A first drain pipe is also provided at the lower part of the central column. An exhaust pipe is provided at the upper part of the float and a second drain pipe is provided at the lower part. The exhaust pipe and the second drain pipe are connected to a high-pressure working fluid output pipe. The first drain pipe is connected to the interior of the float through an elastic pipe or a telescopic pipe, or is connected to the high-pressure working fluid output pipe. One-way flow valves are installed on the first water inlet pipe, the second water inlet pipe, the first drain pipe, the air inlet pipe, the high-pressure working medium discharge pipe, the exhaust pipe, the second drain pipe, and the high-pressure working medium output pipe; electrically controlled valves are also installed on the first water inlet pipe, the air inlet pipe, the exhaust pipe, the second drain pipe, and the high-pressure working medium output pipe.

2. The wave energy harvesting and storage device according to claim 1, characterized in that: The upper part of the bottom pile is a hollow structure, forming an energy storage cavity. The first drainage pipe, the second drainage pipe, the exhaust pipe, and the high-pressure working fluid output pipe are all connected to the energy storage cavity of the bottom pile. The high-pressure working fluid output pipe extends to the middle of the energy storage cavity.

3. A wave energy harvesting and storage device according to claim 2, characterized in that: After the second drain pipe and exhaust pipe are connected, they are connected to the energy storage chamber through a connecting pipe, which is a flexible pipe or a telescopic pipe.

4. A wave energy harvesting and storage device according to claim 2, characterized in that: A liquid level sensor and a pressure sensor are installed inside the energy storage chamber.

5. A wave energy harvesting and storage device according to claim 1, characterized in that: The float is equipped with a level sensor and a pressure sensor, and the pickup is also equipped with a position sensor for detecting the relative position between the float and the central column.

6. A wave energy harvesting and storage device according to claim 1, characterized in that: The pile foundation adopts a suspended platform submerged below the sea surface, which is fixedly connected to the seabed by cables; or the pile foundation is fixedly connected to, but not limited to, wind power foundations, offshore oil facilities, and deep-sea aquaculture facilities.

7. A method for adjusting the floating body frequency of a wave energy harvesting and storage device based on any of the preceding claims, characterized in that: Includes the following steps: 1) Install the wave energy harvester in the sea area and ensure that the air inlet of the air intake pipe at the top of the central column is always above the sea surface; 2) Open the electrically controlled valves on the air inlet pipe and the second drain pipe, close the electrically controlled valves on the first water inlet pipe and the exhaust pipe, and move the float up and down to reduce its mass; 3) Close the electrically controlled valves on the air inlet pipe and the second drain pipe, open the electrically controlled valves on the first water inlet pipe and the exhaust pipe, and move the float up and down to increase its mass, thereby achieving controlled adjustment of the float's mass and natural frequency.

8. An energy-harvesting and energy-storing drive device, characterized in that: The device includes a wave energy harvester and a drive mechanism as described in any one of claims 1-6; the bottom pile of the wave energy harvester is fixedly connected to the pile foundation or the seabed, and the air inlet of the air inlet pipe at the top of its central column is always located above the sea surface; in the initial state, when the sea surface is calm and located at the midpoint between the highest point of the sea surface during high tide and the lowest point of the sea surface during low tide, the piston disc is located in the middle of the central column; the drive mechanism is a mechanism driven by water energy and / or gas energy, and the high-pressure working fluid output pipe of the wave energy harvester is connected to the energy inlet end of the water energy and / or gas energy driven mechanism respectively.

9. An energy-harvesting and energy-storing drive system, characterized in that: It includes an energy pickup module, an energy storage module, and a drive module; the energy pickup module includes several wave energy pickups as described in any one of claims 1-6, wherein the bottom pile of the wave energy pickup is fixedly connected to the pile foundation or the seabed, and the air inlet of the air inlet pipe at the top of its central column is always located above the sea surface. In the initial state, when the sea surface is calm and located at the midpoint between the highest position of the sea surface during high tide and the lowest position of the sea surface during low tide, the piston disc is located in the middle of the central column. Each wave energy harvester's high-voltage working fluid output pipe is connected to an energy collection pipeline; the energy storage module includes several energy collection and storage containers and multiple pressure stabilizing containers, all of which are sealed containers; the energy collection and storage containers are all connected to the top of the energy collection pipeline via connecting pipes; the tops and bottoms of the multiple pressure stabilizing containers are connected sequentially; one end of the energy collection pipeline is closed, and the other end is connected to one of the pressure stabilizing containers; the top of each energy collection and storage container is connected to a gas pipe branch, each gas pipe branch is connected to a gas pipe manifold, which is connected to one of the pressure stabilizing containers; the bottom of each energy collection and storage container is connected to a water pipe branch, each water pipe branch is connected to a water pipe manifold, which is connected to one of the pressure stabilizing containers; The pressure stabilizing container is connected to the drive module through a pipe and can drive the drive module to work and output power or energy.

10. The energy-harvesting and energy-storage drive system according to claim 9, characterized in that: Several energy collectors are distributed into multiple groups, each group of energy collectors being connected to an energy collection pipeline; among them, multiple energy collection pipelines are connected to multiple energy collection and storage containers, and multiple energy collection pipelines are simultaneously connected to a pressure stabilizing container or are individually connected to a pressure stabilizing container; or, multiple energy collection pipelines are connected to a manifold of energy collection pipelines and then to multiple energy collection and storage containers, and pressure sensors are installed on each energy collection pipeline, and electrically controlled valves and check valves are installed between the energy collection pipelines and the manifold of energy collection pipelines. At the same time, the manifold of energy collection pipelines is connected to one of the pressure stabilizing containers, and a check valve is installed between the manifold of energy collection pipelines and the pressure stabilizing container.

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